CN203653222U

CN203653222U - Medicine adding device facilitating medicine metering and adjusting

Info

Publication number: CN203653222U
Application number: CN201420004315.9U
Authority: CN
Inventors: 李晟贤
Original assignee: Individual
Current assignee: BEIJING HAOBO WANWEI TECHNOLOGY Co Ltd
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-06-18
Anticipated expiration: 2024-01-03

Abstract

The utility model discloses a medicine adding device facilitating medicine metering and adjusting. The device comprises a medicine adding pot, a first flow channel, a second flow channel, a third flow channel, a metering flow channel, a switch valve, an adjusting valve and a pressure guiding port. The upper part or the top part of the medicine adding pot is communicated with the upper part or the top part of the metering channel through the first flow channel. The lower part or the bottom part of the medicine adding pot is communicated with the lower part or the bottom part of the metering channel through the second flow channel. The second flow channel is provided with the switch valve. The lower part or the bottom part of the metering channel is communicated with the adjusting valve through the third flow channel. The upper part or the top part of the medicine adding pot is provided with the pressure guiding port. The cross section of the metering flow channel is less than the cross section of the medicine adding pot. The device effectively overcomes problems of medicine adding metering and adjusting difficulty in the conventional medicine adding device and a medicine adding method, so that the medicine adding device and medicine adding technology are simplified, added medicine amount is saved, cost of the medicine adding device is reduced, and management workload is reduced. The device is advantaged by being easy to use, safe, reliable, wide in application, and easy to popularize.

Description

A kind of chemicals dosing plant of being convenient to drug metering and adjusting

Technical field

The utility model relates to a kind of chemicals dosing plant, especially relates to a kind of chemicals dosing plant of being convenient to drug metering and adjusting.Go for the various systems that need to add functional chemical agent such as gas well, oil well, pipeline, facility.

Background technology

In order to ensure the normal production run of the fluid passages (being generally called for short runner) such as gas well, oil well, well, gas pipeline, oil pipeline, water pipeline, pipe fitting, instrument, in order to solve certain production problem or to realize certain production object, conventionally functional chemical agent (being commonly called as medicament) need to be added in runner, facility, be commonly called as dosing.For example: in order to ensure that gasser, natural gas line do not form Hydrate Plugging, domestic common employing adds the method for the hydrate inhibitors such as methyl alcohol; In order to reduce the corrosion and scaling of gas pipeline, oil pipeline, water pipeline, pipe fitting, domestic common employing adds the method for inhibiter, antisludging agent, bactericidal agent; Affect the problem of oil well production in order to solve crude oil property, domesticly conventionally in oil well, add the oil recovery auxiliary agents such as viscosity breaker, freeze point depressant, paraffin remover; In order to solve oil separation problem, domesticly conventionally in crude oil pipeline or moisture trap, add deemulsifier; In order to process oilfield sewage, domesticly conventionally in sewer pipeline or sewage treatment system, add flocculant, degreaser; Etc..

Owing to there being the fluid that pressure is higher in the runners such as gas well, some pressure, even up to more than 20MPa, therefore needs to adopt specific chemicals dosing plant and adding method thereof functional chemical agent could be added in runner.

The domestic chemicals dosing plant for runner and adding method thereof have measuring pump method for dosing medicine, grug feeding jar (be commonly called as and add cartridge bag) method for dosing medicine at present, grug feeding jar method for dosing medicine is divided into again small-sized grug feeding jar cycle method for dosing medicine, bogie type grug feeding jar continuous dosing method (being commonly called as gravitation tank method for dosing medicine), all has different defects.

Measuring pump method for dosing medicine:

The method is to utilize measuring pump that functional chemical agent is added in runner, and the method exists following defect:

1) the method power consumption is larger, and fixed investment is larger, need to build special dosing pump house or portable chemicals dosing plant.

2) the method often needs to lay length apart from dosing pipeline, causes surface construction investment huge.

Take the gas field of pacifying the border region as example, gas well well site does not have industrial power, for methyl alcohol being added in gas well, well site surface line, generally adopts at present the method for building special alchol-injection pump room, long distance note alcohol pipeline, the general length of note alcohol pipeline is 1000～5000m, and ground investment is huge.

3) the method is used when solar powered, can not meet gas well Production requirement.

Take the gas field of pacifying the border region as example: the gas well in this gas field needs the 24 hours round-the-clock methyl alcohol that adds continuously, if there is continuous rainy weather, solar panels effectively power to measuring pump.

4) there is movable parts in the measuring pump such as the method plunger pump used, membrane pump, very easily produces operating troubles, needs higher energy consumption and operation and maintenance cost just can maintain operation.

Small-sized grug feeding jar cycle method for dosing medicine:

The method is that the grug feeding jar that utilizes effective volume to be less than 10 liters periodically adds functional chemical agent in the runners such as gas well, oil well, oil-gas pipeline.As shown in Figure 1, chemicals dosing plant generally comprises grug feeding jar 100, dosing pipeline 101, upper valve 102, bottom valve 103 and exit skirt 104; The weight of the method grug feeding jar 100 used is lighter, and general at right angle setting, in runner 105 tops, can flow automatically the functional chemical agent in grug feeding jar 100 in influent stream road 105 by self gravitation; There is following defect in the method:

1) the method grug feeding jar effective volume used is little, and pressure equalizing pipe is not set, and can not meet the Production requirement of 24 hours round-the-clock continuous dosings of runner such as gas well, oil well casing, natural gas line, can only be used for the periodicity dosing of runner.

From knowledge known in this field: as shown in Figure 1, grug feeding jar 100 in small-sized grug feeding jar cycle method for dosing medicine does not have pressure equalizing pipe, if dosing pipeline 101 internal diameters of grug feeding jar 100 bottoms are very little or valve 103 apertures in bottom are very little, in the time that the medicament gravity flow in grug feeding jar 100 enters runner 105, gas in runner 105 is just difficult to rise enter in grug feeding jar 100, grug feeding jar 100 will form certain degree of vacuum, causes the medicament in tank cannot flow automatically in influent stream road 105; If dosing pipeline 101 internal diameters of grug feeding jar 100 bottoms are large or valve 103 apertures in bottom are larger, the chemical agent in grug feeding jar 100 will flow to runner 105 very soon, is difficult to realize continuous dosing object.

From knowledge known in this field: add the functional chemical dose in gas well or natural gas line conventionally larger, as the gas field of pacifying the border region, add 30～200 liters of/day of methyl alcohol every day in gas well or gas gathering line; Effective volume is less than the periodicity dosing that the grug feeding jar of 10 liters can only be used for gas well, natural gas line, and the grug feeding jar that the Sulige gas field of for example reviving once utilized effective volume to be less than 10 liters periodically adds methyl alcohol in gas well oil pipe, well site natural gas line; The domestic effective volume of not utilizing is at present less than the grug feeding jar of 10 liters to open source information and the exemplary applications of gas well, 24 hours round-the-clock continuous dosings of natural gas line.

From knowledge known in this field: the grug feeding jar that domestic oil well often utilizes effective volume to be less than 10 liters periodically adds viscosity breaker, inhibiter to oil well oil conduit; The domestic effective volume of not utilizing is at present less than the grug feeding jar of 10 liters to open source information and the exemplary applications of 24 hours round-the-clock continuous dosings of oil well oil conduit.

From knowledge known in this field: domesticly conventionally add inhibiter, antisludging agent with measuring pump in water pipeline, the domestic effective volume of not utilizing is at present less than the grug feeding jar of 10 liters to open source information and the exemplary applications of 24 hours round-the-clock continuous dosings of water pipeline.

2) the method uses grug feeding jar before dosing in runner at every turn, all must, first by the gas emptying in grug feeding jar, not only have potential safety hazard, and labour intensity be large.

As shown in Figure 1, after the chemical agent in grug feeding jar 100 is finished, must open the valve 102 on grug feeding jar top, by after the gas emptying in grug feeding jar 100, new chemical agent could be added in grug feeding jar 100.Then, must close grug feeding jar 100 upper valve 102, open grug feeding jar bottom valve 103, could allow the chemical agent in grug feeding jar 100 flow automatically in influent stream road 105.

From knowledge known in this field: functional chemical agent major part (as methyl alcohol) is harmful, in grug feeding jar, can injure operator when the careless emptying of gas.

3) the method grug feeding jar used does not arrange liquidometer, flow counter, the functional chemical agent flow that can not flow out grug feeding jar measures, operator can only rely on individual's sensation, micro-judgment grug feeding jar liquid level, can only rely on personal experience to adjust functional chemical agent flow.

From knowledge known in this field: effective volume is less than that the grug feeding jar of 10 liters arranges liquidometer, flow counter does not have significant practical applications, domestic exemplary applications and the open source information that liquidometer, flow counter are not set at present on effective volume is less than the grug feeding jar of 10 liters.

Bogie type grug feeding jar continuous dosing method:

The method is that the grug feeding jar and the pressure-equalizing line that utilize effective volume to be greater than 10 liters add functional chemical agent in runner continuously.As shown in Figure 2, chemicals dosing plant generally comprises grug feeding jar 200(band liquidometer 201), support 202, dosing pipeline 203, pressure-equalizing line 204, flow counter 205 and valve 206; The method grug feeding jar 200 weight used are heavier, are difficult to direct at right angle setting above runner 207, are generally installed near gas well, oil well, pipeline; The principle of work of the method and dosing process are: make grug feeding jar 200 bottom level higher than runner 207 with support 202, grug feeding jar 200 bottoms are communicated with runner 207 with dosing pipeline 203, grug feeding jar 200 tops are communicated with runner 207 with pressure-equalizing line 204, grug feeding jar 200 internal pressures realize balance with runner 207 pressure, and the interior chemical agent of grug feeding jar 200 can flow automatically in influent stream road 207 by self gravitation.There is following defect in the method:

1) although the method grug feeding jar 200 used is provided with liquidometer 201, set liquidometer 201 is only for showing dosing innage (being commonly called as tank position), and the chemical agent flow that can not flow out grug feeding jar measures, shows and adjusts.

Open source information shows: the upper liquidometer arranging of container (tank) is used for showing the electrolyte level in container (tank) do not have at present open source information to show that the upper liquidometer arranging of container (tank) can be used in metering, shows the fluid flow that container (tank) flows out.Open source information and the exemplary applications of the chemical agent flow that does not flow out with the liquidometer metering arranging on grug feeding jar, demonstration and adjusting grug feeding jar at present this area.

2) when the functional chemical agent flow (being commonly called as dosing flow) of the method grug feeding jar 200 interior outflows used hour, will be less than the minimum range of domestic current known mass flow meter, cause the dosing flow flowing out in grug feeding jar to measure, and then can not meet continuous dosing actual demand.

From knowledge known in this field: the minimum range of domestic equilibrium formula grug feeding jar continuous dosing method known all kinds of flow counter used all exceedes 2.5 ls/h (being equivalent to 60 liters/day) at present, all can not effectively measure the dosing flow that is less than 2.5 ls/h.

Take the gas field of pacifying the border region as example: this gas field adopts the production technology that adds continuously methyl alcohol to gas well (or gas gathering line) for 24 hours, and methyl alcohol chemical feeding quantity is generally 30～200 liters/day, is equivalent to 1.25～8.3 ls/h of dosing flows.

To extend gas field as example: this gas field adopts to gas well (or gas gathering line) 24 hours continuously with the production technology of hydrate inhibitor, and hydrate inhibitor chemical feeding quantity is generally 5～30 liters/day, is equivalent to 0.2～1.25 l/h of dosing flow.

Open source information shows: be divided into positive displacement flowmeter (as gear meter for the flow counter kind of liquid meter at present, rotz flowmeter, rotary piston flowmeter, scraper type flowmeter), vane-wheel type flowmeter is (as water meter, turbine flowmeter), differential pressure flowmeter, variable density (VA) formula flow counter is (as suspended body flowmeter, rotameter), momentum flowmeter, impulse type flow counter, electromagnetic flow meter, ultrasonic flow meter, fluid vibrating type flow counter is (as vortex shedding flow meter, vortex flowmeter), coriolis mass flowmeters, all need to install filter.

From knowledge known in this field: domestic current gear meter, rotz flowmeter, rotary piston flowmeter, scraper type flowmeter minimum range are 40 ls/h (being equivalent to 960 liters/day), water meter, turbine flowmeter minimum range are 30 ls/h (being equivalent to 720 liters/day), and its range, precision are directly related with tested liquid viscosity; The viscosity differences of functional chemical agent is huge, if viscosity breaker, foaming agent viscosity are the hundreds of times of methyl alcohol, antisludging agent viscosity; If with such flow counter function of measuring chemical agent flow, need to re-start verification for each chemical agent and demarcate; For example, when water meter dispatches from the factory, by clear water calibrated span, precision, during with water meter measurement viscosity breaker, foaming agent, must again demarcate its calibrated disc or secondary display instrument, otherwise can produce huge metering error; Therefore the gas field gas well of pacifying the border region that such flow counter can not be 30～200 liters/day to methyl alcohol flow carries out dosing flow metering, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating.

From knowledge known in this field: differential pressure flowmeter need to utilize throttling to produce pressure reduction, its range, precision and tested liquid viscosity, density are directly related; Bogie type grug feeding jar continuous dosing method is to rely on flow by gravity dosing, and the pressure reduction that can produce is extremely limited, can not meet the needed pressure reduction of differential pressure flowmeter, cannot effectively measure; The viscosity differences of functional chemical agent is huge, and density variation is also huge, if methyl alcohol density is 0.8g/cm3, and antisludging agent density reachable 1.1g/cm3, hydrate inhibitor can reach 1.5g/cm3; If with such flow counter function of measuring chemical agent flow, need to re-start verification for each chemical agent and demarcate, otherwise can produce huge metering error; Therefore the gas field gas well of pacifying the border region that such flow counter can not be 30～200 liters/day to methyl alcohol flow carries out dosing flow metering, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating.

From knowledge known in this field: momentum flowmeter, impulse type flow counter, vortex shedding flow meter, vortex flowmeter, coriolis mass flowmeters all require the flow velocity of tested medium can not be too low, and vortex shedding flow meter, vortex flowmeter also require tested velocity of medium must be greater than laminar flow flow velocity; Such flow counter range, precision and tested liquid viscosity, density are directly related, if with such flow counter function of measuring chemical agent flow, need to re-start verification for each chemical agent and demarcate, otherwise can produce huge metering error; Domestic current known dosing pipeline internal diameter is 10mm, and methyl alcohol flow is that the flow velocity of 30/ day is 4.4mm/ second, can not meet the required tested medium minimum flow velocity requirement of such flow counter, cannot effectively measure; Therefore the gas field gas well of pacifying the border region that such flow counter can not be 30～200 liters/day to methyl alcohol flow carries out dosing flow metering, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating.

From knowledge known in this field: partial function chemical agent is organic liquid, if methyl alcohol is insulator; Electromagnetic flow meter requires tested medium must have certain conductivity; Therefore electromagnetic flow meter can not effectively measure methyl alcohol flow.

From knowledge known in this field: the resolution 1mm/s of ultrasonic flow meter to flow velocity, effectively measures but can not be less than flow in the pipe that 15mm, flow velocity be less than 10mm/s to internal diameter; The fluid flow of pipeline internal diameter 15mm, flow velocity 10mm/s is 6.4 ls/h, is equivalent to 153.6 liters/day; Therefore ultrasonic flow meter can not carry out dosing flow metering by the gas field gas well of pacifying the border region below 150 liters/day to methyl alcohol flow, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating.

From knowledge known in this field: range, the precision of suspended body flowmeter (being rotameter) are directly related with tested liquid, all demarcate with clear water while dispatching from the factory; If with suspended body flowmeter function of measuring chemical agent flow, need to re-start verification for each chemical agent and demarcate, otherwise can produce huge metering error; The minimum range of domestic current known suspended body flowmeter is 2.5 ls/h (being equivalent to 60 liters/day), therefore suspended body flowmeter can not carry out dosing flow metering by the gas field gas well of pacifying the border region below 60 liters/day to methyl alcohol flow, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating.

From knowledge known in this field: tipping bucket type metering separator is usually used in oil well liquid-producing metering, minimum range is 1000 liters/day, can not carry out dosing flow metering to the gas field gas well of pacifying the border region of 30～200 liters/day of methyl alcohol flows, can not be more that the prolongation gas field gas well of 5～30 liters/day carries out dosing flow metering to the hydrate inhibitor flow of annotating; Domestic tipping bucket type metering separator exemplary applications or the open source information that does not also have minimum range to be less than 1000 liters/day at present.

From knowledge known in this field: the domestic tipping bucket type gauging device that has at present metering moisture conditions, but this device can not be used for measuring the fluid flow of the runners such as pipeline, domestic do not have such to install for measuring exemplary applications or the open source information of fluid flow in runner at present.

3) when the dosing flow flowing out when the method grug feeding jar 200 used can not measure by flow counter 205, the method can only rely on grug feeding jar 200 liquidometers 201 shown liquid level within the unit time to change numerical value, realize the adjustment of dosing flow by the method for artificial adjustment valve 206 apertures, must cause dosing flow adjustment work extremely slow, can not meet runner production run needs.

From knowledge known in this field: because all kinds of manufacturing parameters (as fluid flow, pressure, the temperature etc.) fluctuation of runner is large, can not be invariable; Ambient air temperature, ground temperature also can not be invariable; Add continuously the functional chemical agent flow in runner also must often adjust; Adjusting dosing flow (or chemical feeding quantity) is important, a day-to-day work content in the runner management such as gas well, oil well, pipeline.

Take the gas field of pacifying the border region as example: the most of gas well in this gas field, natural gas line add methyl alcohol to suppress gas hydrate formation for 24 hours continuously; It is directly related that methyl alcohol suppresses the manufacturing parameters such as ability and gas well gas production rate, water production rate, pressure, the temperature that hydrate forms, if gas well water production rate increases suddenly or gas well pressure increases suddenly or gas well gas production rate reduces suddenly or ground environment temperature declines suddenly, all must improve as early as possible the quantity of methyl alcohol adding continuously in gas well, natural gas line, otherwise will form Hydrate Plugging gas well, natural gas line.

From knowledge known in this field: bogie type grug feeding jar continuous dosing method adopts manual method to adjust dosing flow, show according to the flow counter instant flow rate data on dosing pipeline, improve or reduce dosing flow by the method for artificial adjustment valve opening; Therefore, in the time that the flow counter on dosing pipeline can not effectively, accurately show instantaneous dosing flow, operator just cannot utilize flow counter to adjust valve opening, can only the liquid level within the unit time reduce numerical value adjustment valve opening according to grug feeding jar liquidometer; If the cross-sectional area of grug feeding jar is larger, dosing flow is again less, and operator needs valve to be adjusted to for a long time required aperture, needs dosing flow to be adjusted to for a long time required flow.

Add continuously 1.25 ls/h of methyl alcohol (30 liters/day) as example take the gas field gas well of pacifying the border region: in order to reduce to number of times and the expense of supplementary functionality chemical agent in grug feeding jar, the effective volume of grug feeding jar should not be too little, (effective volume is greater than 180 liters can to adopt the Horizontal cylinder shape grug feeding jar of internal diameter 400mm, length 1500mm, the maximum cross-section area 0.6m2), can add continuously methyl alcohol 6 days to gas well with the dosing flow of 1.25 ls/h (30 liters/day); The vertical type cylinder shape grug feeding jar (effective volume is greater than 250 liters, cross-sectional area 0.5m2) that also can adopt internal diameter 800mm, height 500mm, can add methyl alcohol 8 days to gas well continuously with the dosing flow of 1.25 ls/h (30 liters/day); The methyl alcohol that can not be 1.25 ls/h (30 liters/day) to dosing flow due to domestic existing known mass flow meter carries out flow metering, and operator can only the liquid level within the unit time reduce numerical value adjustment valve opening according to grug feeding jar liquidometer; From knowledge known in this field, in the time that liquidometer reading changing value is less than 5mm, operator's eyes or ultrasonic level gage are difficult to liquid level to change and make accurate judgement; Vertical type cylinder shape grug feeding jar liquid level in internal diameter 800mm, height 500mm reduces 5mm, is calculated from knowledge, and the functional chemical dose that this grug feeding jar flows out is 3 liters, and the time of flowing out according to 1.25 ls/h of dosing flows is 2.4 hours; Therefore operator need to wait for 2.4 hours after adjustment valve opening, could judge that whether the valve opening of adjusting is reasonable, could judge that whether dosing flow is reasonable; Because not having flow meter data, operator instructs, this valve opening adjustment must be with and be born the character of much blindness, therefore operator only indicates and can not in the short period of time valve opening be adjusted to rational position according to liquidometer, can not be at short notice by dosing flow regulating to reasonable flow, but need could regulate successfully for a long time; Adjust for 3 times and calculate as required, operator need to work and dosing flow could be adjusted to required flow in 7.2 hours.From knowledge known in this field, the situation that gas well manufacturing parameter significantly changes often occurs, if when gas well need to increase methyl alcohol dosing flow because manufacturing parameter changes, methyl alcohol flow can not be increased to the required dosing flow of gas well in 1 hour, hydrate will occur blocked the industrial accident of gas well, pipeline; Otherwise, if when gas well need to reduce methyl alcohol dosing flow because manufacturing parameter changes, methyl alcohol flow can not be reduced to the required dosing flow of gas well in 1 hour, will cause methyl alcohol waste, increase gas well productive costs; Therefore, the method for this artificial adjustment dosing flow has significantly increased operator's labour intensity, and to gas well, management brings very big difficulty, can not meet the need of production of the runner such as gas well, pipeline requirement quick adjusting dosing flow.

Add continuously 0.5 l/h of hydrate inhibitor (12 liters/day) as example to extend gas field gas well: in order to reduce to number of times and the expense of supplementary medicament in grug feeding jar, the effective volume of grug feeding jar should not be too little, (effective volume is greater than 180 liters can to adopt the Horizontal cylinder shape grug feeding jar of internal diameter 400mm, length 1500mm, the maximum cross-section area 0.6m2), can add continuously hydrate inhibitor 15 days to gas well with the dosing flow of 0.5 l/h (12 liters/day); From knowledge known in this field, in the time that liquidometer reading changing value is less than 2mm, operator's eyes or ultrasonic level gage are difficult to liquid level to change and make accurate judgement; With the Horizontal cylinder shape grug feeding jar of internal diameter 400mm, length 1500mm with the maximum cross-section area 0.6m ²reduce 2mm liquidometer, the functional chemical dose that this grug feeding jar flows out is 1.2 liters, and the time of flowing out take 0.5 l/h of dosing flow was as 2.4 hours; Therefore operator need to wait for 2.4 hours after adjustment valve opening, could judge that whether the valve opening of adjusting is reasonable, could judge that whether dosing flow is reasonable; Because not having flow meter data, operator instructs, this valve opening adjustment must be with and be born the character of much blindness, therefore operator only indicates and can not disposable valve opening be adjusted to rational position according to liquidometer, can not disposable dosing flow be adjusted to reasonable flow, but need to adjust many times; Adjust for 3 times and calculate as required, operator need to work and dosing flow could be adjusted to required flow in 7.2 hours; From knowledge known in this field, the situation that gas well manufacturing parameter significantly changes often occurs, if when gas well need to increase hydrate inhibitor dosing flow because manufacturing parameter changes, hydrate inhibitor flow can not be increased to the required dosing flow of gas well in 1 hour, hydrate will occur blocked the industrial accident of gas well, pipeline; Otherwise, if when gas well need to reduce hydrate inhibitor dosing flow because manufacturing parameter changes, hydrate inhibitor flow can not be reduced to the required dosing flow of gas well in 1 hour, will cause hydrate inhibitor waste, increase gas well productive costs; Therefore, the method for this artificial adjustment dosing flow has significantly increased operator's labour intensity, and to gas well, management brings very big difficulty, can not meet the need of production of the runner such as gas well, pipeline requirement quick adjusting dosing flow.

4) the set flow counter 205 of the method can only be used for dosing flow metering, can not show grug feeding jar liquid level.

In a word, above-mentioned chemicals dosing plant and adding method thereof thereof, in the time adding functional chemical agent for low discharge, be not easy to drug metering and adjusting.

Utility model content

" fluid " in the utility model: refer to the material that gaseous fluid (as natural fuels), liquid phase fluid (as water), gas-liquid mixture fluid (as oil gas), solid-liquid fluid-mixing (as flocculant-aqueous mixtures) etc. arbitrarily can in-line proper flow.

" well head " in the utility model: claim again christmas tree or christmas tree, refer to the upstanding portion that gas well or oil well basset, operated by rotary motion has the pipe fittings such as valve, compression indicator, four-way and oil pipe, sleeve pipe outlet.

" tubing pressure " in the utility model: be generally called for short oil pressure, refer to the pressure that gas well mouth or well mouth of oil well tubing gauge show, the pressure out time that is hydrocarbon fluids from well mouth oil pipe.

" casing pressure " in the utility model: be generally called for short casing pressure, refer to the pressure that gas well mouth or well mouth of oil well casing pressure table show.

" medicament " in the utility model: be being commonly called as of functional chemical agent, be generally in a liquid state under normal temperature and pressure or be fluid state, be sometimes called for short medicine.

" dosing " in the utility model: be this area to adding being commonly called as of functional chemical agent, sometimes refer in particular to liquid chemical agent added to the process in oil pipe, sleeve pipe, pipeline.

" chemical feeding quantity " in the utility model: be the abbreviation that adds functional chemical dose, sometimes also refer to dosing flow.

" dosing flow " in the utility model: claiming again medicament flow, is the abbreviation of functional chemical agent flow, generally refers to functional chemical agent rate of volume flow.

" grug feeding jar " in the utility model: be commonly called as and add cartridge bag, refer to the container of holding function chemical agent in chemicals dosing plant, sometimes also refer to utilize the chemicals dosing plant of container " dosing ".

" pipe fitting " in the utility model: refer to the part that pipe can be connected into pipeline, as elbow, flange, three-way pipe, four-way piece, pipe reducer, silk head, slip-knot, pipe collar, Y-piece joint, X-type adaptor union, quick coupling, valve etc., sometimes also refer to flow counter, compression indicator etc.

The technical problems to be solved in the utility model is to provide a kind of chemicals dosing plant of being convenient to drug metering and adjusting; This chemicals dosing plant has overcome the defect of existing chemicals dosing plant, can effectively solve the dosing flow metering of existing chemicals dosing plant and adjust a difficult problem, can simplify chemicals dosing plant and dosing technique, can save chemical feeding quantity, can reduce chemicals dosing plant expense and management workload etc.; Have and implement easily, safe and reliable, be widely used, promote the excellent features such as easy.

The utility model provides a kind of flow metering and control method of said apparatus; The method has overcome the defect of existing chemicals dosing plant flow metering, can effectively solve the flow metering that exists in existing apparatus and a difficult problem for adjusting, can simplify dosing technique, can save chemical feeding quantity, can reduce chemicals dosing plant expense and management workload etc.; Have and implement easily, safe and reliable, be widely used, promote the excellent features such as easy.

For solving the problems of the technologies described above, the first technical scheme that the utility model adopts is:

Be convenient to a chemicals dosing plant for drug metering and adjusting, comprise grug feeding jar, first flow, the second runner, the 3rd runner, metering runner, switch valve, control cock and impulse mouth;

Described grug feeding jar top or top are connected and communicate with the metering top of runner or top by first flow;

Described grug feeding jar bottom or bottom are connected and communicate with metering runner bottom or bottom by the second runner, on described the second runner, switch valve are set;

Described metering runner bottom or bottom are connected and communicate with control cock by the 3rd runner;

Described grug feeding jar top or top arrange impulse mouth;

The cross-sectional area of described metering runner is less than the cross-sectional area of described grug feeding jar.

Described grug feeding jar is for the functional chemical agent of saving.Described grug feeding jar is leakproof tank, can be made of metal or non-metal is made; Can be vertical vessel, can be also horizontal vessel, can be high pressure vessel, can be also middle and low-pressure vessel; Should be able to meet safety requirements and the Production requirement of runner dosing.Those skilled in the art can determine concrete structure, form, material, design pressure, effective volume of described grug feeding jar etc. according to prior art means, can determine particular location, type of attachment, method of attachment that described grug feeding jar top or top are communicated with first flow and impulse mouth, can determine particular location, type of attachment, method of attachment that described grug feeding jar bottom or bottom are communicated with the second runner, can utilize prior art to make described grug feeding jar.Described first flow is for keeping the equilibrium of pressure in grug feeding jar and metering runner internal upper part space.Described the second runner is for discharge function chemical agent, simultaneously for balance grug feeding jar liquid level and metering runner liquid level; Switch valve can open and close the second runner.Described metering runner is for measuring the flow by control cock; In the utility model, in order to measure at short notice by the flow of the functional chemical agent of control cock, the cross-sectional area that necessarily requires to measure runner is less, cross-sectional area in metering runner will meet operating personal can draw the requirement of measuring data on flows in runner at short notice, as those skilled in the art, can select as required the cross-sectional area size of proper measurement.Described the 3rd runner is used for being communicated with control cock.Described control cock is used for regulating dosing flow, simultaneously the external system pipeline that needs dosing.Described impulse mouth for introducing pressure in grug feeding jar.Described functional chemical agent should be basic identical through the resistance to flow of the 3rd runner arrival control cock to resistance to flow and the self-measuring runner of control cock through the second runner, switch valve from grug feeding jar.

Preferably, described runner is the abbreviation of fluid passage, refers to the passage that fluid is flowed through; Can refer to that inside is provided with any one or any two or more combination of the pipeline of fluid passage, pipe fitting, duct, through hole.

Preferably, described first flow, the second runner and the 3rd runner are any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly; Make (as high pressure hose) by metallic material or non-metallic material; Can valve, flange and screw thread be set one or both ends; Its design pressure should be lower than the design pressure of grug feeding jar and metering runner.For realizing aforementioned object, those skilled in the art can determine described first flow according to prior art means, the concrete structure of the second runner and the 3rd runner, form, material, the version at design pressure and two ends thereof, can determine first flow two ends and grug feeding jar, the particular location that metering runner top or top are communicated with, type of attachment, method of attachment, can determine the second runner two ends and grug feeding jar, the particular location that metering runner bottom or bottom are communicated with, type of attachment, method of attachment, can purchase from the market described runner or can utilize prior art means to make described runner.

Preferably, described metering runner is any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly.Described metering runner can be made up of metal or non-metallic material; The sealing members such as blind plate, flange, valve, screw thread can be with in top, the bottom of described metering runner; Described metering runner should be able to uprightly or vertically be installed, and should be able to directly or indirectly show the liquid level of described metering runner; Its design pressure should be lower than the design pressure of grug feeding jar.For realizing aforementioned object, those skilled in the art can determine concrete structure, form, material, the design pressure of described metering runner according to prior art means, can determine version, seal form, the encapsulating method at described metering runner two ends; Concrete connection location, type of attachment, method of attachment that described metering runner top or top are communicated with first flow can be determined, concrete connection location, type of attachment, method of attachment that described metering runner bottom or bottom are communicated with the second runner can be determined; Can determine concrete connection location, type of attachment, method of attachment that described metering runner bottom or bottom are communicated with the 3rd runner; Can determine level gauging or the display method of described metering runner; Can purchase from the market or can utilize prior art means to make described metering runner.

From knowledge known in this field: when upright metallic bore is no more than 100mm, liquid in pipe can produce very large flow velocity under Action of Gravity Field, can allow liquid level fast-descending in metal tube; Utilizing applying ultrasonic lever meter to measure closed vessel liquid level is the mature technology of this area; Therefore ultrasonic level gage can Measurement accuracy liquid level in upright or vertical metal tube; In the time that transparent plastic material, quartz are made for vertical duct, can directly observe its liquid level.

Preferably, for convenient metering, described metering runner is glass-tube liquid level meter, glass plate type leveler, colored quartz tube type liquidometer or visual-mirror type liquidometer.

Preferably, for convenient metering, described metering runner is magnetic-float type liquidometer or the magnetosensitive electronic double-colored liquid indicator that utilizes law of buoyancy and magnetic couple effect to make.

Preferably, in order to realize level gauge the signal is far passed, described metering runner is the teletransmission type magnetic-float type liquidometer that utilizes law of buoyancy, magnetic couple effect and sensor, transmitter, display instrument to make.

Preferably, in order to realize level gauge the signal is far passed, described metering runner comprises flanged (FLGD) housing, flanged (FLGD) magnetic floating-ball fluid level transmitter, upper interface, bottom interface and bottom interface, and described magnetic floating-ball fluid level transmitter lower end extends to bottom in housing; All available metal or non-metal are made.From knowledge known in this field: magnetic floating-ball fluid level transmitter can be converted to liquid level standard electric signal teletransmission.

Preferably, in order to realize level gauge the signal is far passed, described metering runner comprises threaded housing, threaded static-pressure type liquid level transmitter, upper interface, bottom interface and bottom interface, and described static-pressure type liquid level transmitter lower end extends to bottom in housing; All available metal or non-metal are made.More preferably, described static-pressure type liquid level transmitter can be magnetostrictive liquid level transducer.From knowledge known in this field: static-pressure type liquid level transmitter can be converted to liquid level standard electric signal teletransmission; In the time that liquid level can change fast, static-pressure type liquid level transmitter can effectively measure liquid level.

Preferably, in order to realize level gauge the signal is far passed, described metering runner comprises housing, pressure transformer, upper interface, bottom interface and bottom interface, and described pressure transformer is arranged on bottom or the bottom of housing; All available metal or non-metal are made.From knowledge known in this field: pressure transformer can be converted to liquid level standard electric signal teletransmission; In the time that liquid level can change fast, pressure transformer can effectively measure liquid level.

Preferably, in order to reduce costs, described metering runner comprises housing, compression indicator, upper interface, bottom interface and bottom interface, and described compression indicator is arranged on bottom or the bottom of housing; All available metal or non-metal are made.From knowledge known in this field: head of liquid and liquid-column height (being liquid level) exist linear ratio relation, after known pressure meter reading and fluid density (or proportion), can calculate fast corresponding liquid level.In the time that liquid level can change fast, compression indicator can effectively measure liquid level.

Preferably, in order to reduce costs, described metering runner comprises housing, magnetic float, upper interface, bottom interface, bottom interface and coloured iron powder, and described magnetic float is arranged in housing, and coloured iron powder is arranged on outside housing and magnetic float relevant position.Principle of work is: when magnetic float rise with liquid level or under while falling, coloured iron powder of housing outer wall rises thereupon or declines, and can indicate liquid level.

Preferably, the design pressure of described control cock should be lower than the design pressure of metering runner, and the known valves such as described gate valve, needle valve, shutoff valve, ball valve, butterfly valve all can be used as control cock application; Valve two ends type of attachment is numerous, can be that gas thread connects, flange connects, slip-knot formula is threaded, and also valve directly can be welded or is bonded on pipeline.

Preferably, described impulse mouth is any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly; Make (as high pressure hose) by metallic material or non-metallic material; Port can be with valve, flange and screw thread, and its design pressure is not less than the design pressure of grug feeding jar.For realizing aforementioned object, those skilled in the art can determine the version of concrete structure, form, material, design pressure and the port thereof of described impulse mouth according to prior art means, can determine concrete connection location, type of attachment, method of attachment that described impulse mouth one end is communicated with grug feeding jar, can purchase from the market described impulse mouth or can utilize prior art means to make described impulse mouth.

Preferably, for convenient management, meet pressure container manufacture, use standard-required, described grug feeding jar is provided with safety valve, and described safety valve is arranged at grug feeding jar top or top.

Preferably, described grug feeding jar is provided with compression indicator or pressure transformer.

Preferably, described grug feeding jar is provided with vent, and described vent is arranged at grug feeding jar top or top.

Preferably, described grug feeding jar is provided with sewage draining exit.

Preferably, for regular replenishment medicament in grug feeding jar, described grug feeding jar is provided with tonic interface.

For solving the problems of the technologies described above, the second technical scheme that the utility model adopts is:

Described grug feeding jar bottom or bottom are connected and communicate with the 3rd runner by the second runner, and described the second runner is provided with switch valve;

Described grug feeding jar top or top arrange impulse mouth;

For solving the problems of the technologies described above, the third technical scheme that the utility model adopts is:

Be convenient to a chemicals dosing plant for drug metering and adjusting, comprise grug feeding jar, dividing plate, first flow, the second runner, the 3rd runner, switch valve, control cock and impulse mouth;

Described grug feeding jar inside is divided into drug storage chamber and measurement chamber with dividing plate, and the top of described drug storage chamber and measurement chamber is communicated with by first flow, and the cross-sectional area of described measurement chamber is much smaller than the cross-sectional area in drug storage chamber;

Described measurement chamber bottom is connected and communicates with control cock by the 3rd runner;

Bottom, described drug storage chamber is connected and communicates with the 3rd runner by the second runner, on described the second runner, establishes switch valve;

Described grug feeding jar top or top arrange impulse mouth.

Described dividing plate plays liquid in isolation measurement chamber and drug storage chamber; Described first flow plays balance measurement chamber and drug storage cavity pressure.

From knowledge known in this field: with the method for handheld portable ultrasonic level gage noncontact measurement closed vessel liquid level be the conventional technological means in this area, can be used in noncontact Quick Measurement and found the liquid level and the liquid measure that decline to liquid in round tube, rectangular tube, oblong pipe.

Preferably, described measurement chamber is the block form cavity arranged side by side with drug storage chamber being isolated into 1 dividing plate; More preferably, described measurement chamber be with 2 be isolated into upper spacer by the enclosing type cavity of drug storage chamber double team, cavity bottom should with at the bottom of grug feeding jar tank or tank skin share, or cavity at least should have 1 facade and grug feeding jar tank skin shared.

Preferably, described measurement chamber is the separate chamber in grug feeding jar that is arranged on being isolated into dividing plate.

Preferably, described first flow, the second runner and the 3rd runner are any one or any two or more combinations of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly; Described first flow plays balance measurement chamber and drug storage cavity pressure.

Preferably, the shape of cross section of described measurement chamber is regular geometric configuration; Described measurement chamber cross-sectional area is from top to bottom equal to; The cross-sectional area of described measurement chamber should be able to meet the needs that Quick Measurement liquid level changes.For realizing aforementioned object, those skilled in the art can determine concrete geometric configuration, cross-sectional area, the physical dimension of described measurement chamber according to prior art means.

Preferably, the cross-sectional plane of described measurement chamber is square, oblong or circle.

Preferably, in order to facilitate the liquid level teletransmission of measurement chamber, on the lateral wall of described measurement chamber bottom or bottom, be provided with pressure transformer.From knowledge known in this field: head of liquid and liquid-column height (being liquid level) exist linear ratio relation, after known pressure meter reading and fluid density (or proportion), can calculate fast corresponding liquid level; Therefore,, in the time that liquid level can change fast, pressure transformer can effectively measure liquid level.

Preferably, in order to facilitate the liquid level teletransmission of measurement chamber, in the measurement chamber of described grug feeding jar, be provided with magnetic float transmitter; More preferably, described magnetic float transmitter comprises baffle plate, magnetic float, detected catheter and transmitter.From knowledge known in this field: with the method for liquid level in magnetic float transmitters sense leakproof tank be this area maturation method.

Preferably, in order to facilitate the liquid level teletransmission of measurement chamber, in the measurement chamber of described grug feeding jar, be provided with static-pressure type liquid level transmitter; More preferably, described static-pressure type liquid level transmitter is magnetostrictive liquid level transducer.From knowledge known in this field: the method that detects liquid level in leakproof tank with static-pressure type liquid level transmitter is this area maturation method.

Preferably, in order to reduce costs, on the measurement chamber bottom of described grug feeding jar or the lateral wall of bottom, be provided with compression indicator.From knowledge known in this field: head of liquid and liquid-column height (being liquid level) exist linear ratio relation, after known pressure meter reading and fluid density (or proportion), can calculate fast corresponding liquid level; Therefore,, in the time that liquid level can change fast, compression indicator can effectively measure liquid level.

The flow metering of said apparatus of the present utility model and control method, comprise the steps:

1) in grug feeding jar, introduce pressure by impulse mouth, the outlet of control cock is connected in the system and device for the treatment of dosing;

2) open switch valve and control cock, to treating to add functional chemical agent in the system and device of dosing;

3) closing switch valve, collects the changing value of liquid level in metering runner, calculates the dosing flow of medicament;

4) if dosing flow is excessive, turn the aperture of control cock down, and then collect liquid level in metering the changing value in runner, again calculate the dosing flow of medicament, and judge whether this dosing flow satisfies the demands; Otherwise, if dosing flow is too small, tune up the aperture of control cock, and then collect liquid level in metering the changing value in runner, again calculate the dosing flow of medicament, and judge whether this dosing flow satisfies the demands;

Or, step 4) adopts following steps: if dosing flow is excessive, first turn the aperture of control cock down, open switch valve again until the liquid level in metering runner and the liquid level equilibrium in grug feeding jar, then closing switch valve, collect liquid level in metering the changing value in runner calculate the dosing flow of medicament, and judge whether this dosing flow satisfies the demands; Otherwise, if dosing flow is too small, first tune up the aperture of control cock, open switch valve again until the liquid level in metering runner and the liquid level equilibrium in grug feeding jar, then closing switch valve, collect liquid level in metering the changing value in runner calculate the dosing flow of medicament, and judge whether this dosing flow satisfies the demands;

5) repeating step 4), until by extremely required flow of dosing flow regulating;

6) open switch valve, in grug feeding jar, medicament adds in the system and device for the treatment of dosing according to the required dosing flow after regulating.

Preferably, flow metering and the control method of said apparatus in gas well dosing process:

1) first with impulse pipeline, the impulse mouth on grug feeding jar is communicated with gas well sleeve valve, then control cock is communicated with gas well tubing valve with dosing pipeline;

2) then open switch valve, control cock and gas well sleeve valve, gas well tubing valve, the functional chemical agent in grug feeding jar enters in tubing valve by switch valve, metering runner, control cock, dosing pipeline successively under casing pressure effect; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in gas well according to the required dosing flow after regulating.

Known by knowledge known in this field: gas well is made up of sleeve pipe, oil pipe, the inevitable pressure far above gas well oil pipe of the pressure of gas well sleeve pipe (have even exceed 10MPa more than), the inevitable pressure higher than natural gas line of pressure of gas well oil pipe; After grug feeding jar being communicated with gas well sleeve pipe with impulse pipeline, grug feeding jar internal pressure is suitable with gas well casing pressure, and inevitable higher than gas well oil pipe, natural gas pipeline pressure, the functional chemical agent in grug feeding jar can flow in gas well oil pipe, natural gas line.

Preferably, flow metering and the control method of said apparatus in well site natural gas line dosing process:

1) first with impulse pipeline, the impulse mouth on grug feeding jar is communicated with gas well sleeve valve, then control cock is communicated with well site natural gas line with dosing pipeline;

2) then open switch valve, control cock, gas well sleeve valve, the functional chemical agent in grug feeding jar enters in the natural gas line of well site by switch valve, metering runner, control cock, dosing pipeline successively under casing pressure effect; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in the natural gas line of well site according to the required dosing flow after regulating.

Preferably, flow metering and the control method of said apparatus in oil well oil conduit dosing process:

1) first with impulse pipeline, the impulse mouth on grug feeding jar is communicated with sleeve valve of oil well, then control cock is communicated with oil well oil conduit valve with dosing pipeline;

2) then open switch valve, control cock, sleeve valve of oil well, oil well oil conduit valve, the functional chemical agent in grug feeding jar enters in oil well oil conduit valve by switch valve, metering runner, control cock, dosing pipeline successively under oil well casing pressure-acting; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in oil well oil conduit according to the required dosing flow after regulating.

Preferably, said apparatus flow metering and control method in natural gas line (or gas gathering station external transport pipeline) dosing process between station:

1) first with impulse pipeline, the impulse mouth on grug feeding jar and the gas well pipeline that enters the station is communicated with, then natural gas line (or gas gathering station external transport pipeline) between control cock and station is communicated with dosing pipeline;

2) then open switch valve, control cock, the functional chemical agent in grug feeding jar enters in natural gas line between station (or gas gathering station external transport pipeline) by switch valve, metering runner, control cock, dosing pipeline successively under gas well enters the station line pressure effect; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in inbound natural gas line (or gas gathering station external transport pipeline) according to the required dosing flow after regulating.

1) first by grug feeding jar bottom shelf height to exceeding christmas tree tubing valve height, then with impulse pipeline, the impulse mouth on grug feeding jar is communicated with the natural gas line of christmas tree one side, then control cock is communicated with the tubing valve of christmas tree opposite side with dosing pipeline;

2) then open switch valve, control cock, tubing valve, the functional chemical agent in grug feeding jar enters in the natural gas line of well site by switch valve, metering runner, control cock, dosing pipeline, tubing valve, top four-way successively under Action of Gravity Field; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

From knowledge known in this field: tubing valve, top four-way by christmas tree one side are conventional methods to the natural gas line dosing of opposite side.

Preferably, flow metering and the control method of said apparatus in gas well sleeve pipe dosing process:

1) first by grug feeding jar bottom shelf height to exceeding christmas tree sleeve valve height, then with impulse pipeline, the impulse mouth on grug feeding jar is communicated with the gas well sleeve valve of christmas tree one side, then control cock is communicated with the gas well sleeve valve of christmas tree opposite side with dosing pipeline;

2) then open switch valve, control cock, gas well sleeve valve, the functional chemical agent in grug feeding jar enters in gas well sleeve pipe by switch valve, metering runner, control cock, dosing pipeline successively under Action of Gravity Field; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in gas well sleeve pipe according to the required dosing flow after regulating.

Preferably, flow metering and the control method of said apparatus in gas well oil pipe dosing process:

1) first by grug feeding jar bottom shelf height to exceeding christmas tree tubing valve height, then with impulse pipeline, the impulse mouth on grug feeding jar is communicated with the gas well oil pipe of christmas tree one side, then control cock is communicated with same gas well oil pipe with dosing pipeline;

2) then open switch valve, control cock, gas well tubing valve, the functional chemical agent in grug feeding jar enters in gas well oil pipe by switch valve, metering runner, control cock, dosing pipeline successively under Action of Gravity Field; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in gas well oil pipe according to the required dosing flow after regulating.

Preferably, flow metering and the control method of said apparatus in oil well casing dosing process:

1) first by grug feeding jar bottom shelf height to exceeding Christmas tree casing valve height, then with impulse pipeline, the impulse mouth on grug feeding jar is communicated with the sleeve valve of oil well of christmas tree one side, then control cock is communicated with the sleeve valve of oil well of christmas tree opposite side with dosing pipeline;

2) then open switch valve, control cock, sleeve valve of oil well, the functional chemical agent in grug feeding jar enters in oil well casing by switch valve, metering runner, control cock, dosing pipeline successively under Action of Gravity Field; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in oil well casing according to the required dosing flow after regulating.

Preferably, flow metering and the control method of said apparatus in flow channel for liquids dosing process:

1) first with impulse pipeline, the impulse mouth on grug feeding jar is communicated with compressed gas source, then control cock is communicated with flow channel for liquids with dosing pipeline;

2) then open switch valve, control cock, the functional chemical agent in grug feeding jar enters in flow channel for liquids by switch valve, metering runner, control cock, dosing pipeline successively under compressed gas source pressure-acting; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

6) open switch valve, in grug feeding jar, medicament adds in flow channel for liquids according to the required dosing flow after regulating.

Preferably, described compressed gas source can be any one of nitrogen gas cylinder, liquefied gas bottle, oxygen bottle, acetylene cylinder, carbon dioxide canister, compression natural gas tank (as CNG), instrument wind, air compressor, blowdown fan, air pump, mobile compressed gas source, liquid nitrogen, liquid CO 2, blue gas (as LNG).

1) first by grug feeding jar bottom shelf height to exceeding natural gas line between station (or gas gathering station external transport pipeline) highly, then with impulse pipeline, natural gas line (or gas gathering station external transport pipeline) between the impulse mouth on grug feeding jar and station is communicated with, then with dosing pipeline by control cock with stand between natural gas line (or gas gathering station external transport pipeline) be communicated with;

2) then open switch valve, control cock, the functional chemical agent in grug feeding jar enters in natural gas line between station (or gas gathering station external transport pipeline) by switch valve, metering runner, control cock, dosing pipeline successively under Action of Gravity Field; Liquid level in grug feeding jar and metering runner reaches balance automatically simultaneously;

For solving above-mentioned second technical matters, the flow metering of said apparatus of the present utility model and control method, comprise the steps:

1) in drug storage chamber and measurement chamber, introduce pressure by impulse mouth, the outlet of control cock is connected in the system and device for the treatment of dosing;

2) open switch valve and control cock, to treating to add functional chemical agent in the system and device of dosing; Liquid level in measurement chamber and the liquid level in liquid storage cylinder reach balance automatically simultaneously;

3) closing switch valve, collects the changing value of liquid level in measurement chamber, calculates the dosing flow of medicament;

The beneficial effects of the utility model are as follows: the utility model has overcome the defect of existing chemicals dosing plant, can effectively solve the dosing flow metering existing in existing chemicals dosing plant and adding method thereof and adjust a difficult problem, can simplify chemicals dosing plant and dosing technique, chemical feeding quantity can be saved, chemicals dosing plant expense and management workload etc. can be reduced; Have and implement easily, safe and reliable, be widely used, promote the excellent features such as easy.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail

Fig. 1 is the chemicals dosing plant structural representation that existing small-sized grug feeding jar cycle method for dosing medicine uses;

Fig. 2 is the chemicals dosing plant structural representation that existing bogie type grug feeding jar continuous dosing method is used;

Fig. 3 is the chemicals dosing plant structural representation in embodiment 1;

Fig. 4 is the metering runner structural representation in embodiment 5;

Fig. 5 is the metering runner structural representation in embodiment 6;

Fig. 6 is the metering runner structural representation in embodiment 7;

Fig. 7 is the metering runner structural representation in embodiment 8;

Fig. 8 is the metering runner structural representation in embodiment 9;

Fig. 9 is the chemicals dosing plant structural representation in embodiment 10;

Figure 10 is the chemicals dosing plant structural representation in embodiment 11;

Figure 11 is the chemicals dosing plant structural representation in embodiment 12;

Figure 12 is the chemicals dosing plant structural representation in embodiment 13;

Figure 13 is the chemicals dosing plant structural representation in embodiment 14;

Figure 14 is the chemicals dosing plant structural representation in embodiment 15;

Figure 15 is the chemicals dosing plant structural representation in embodiment 16;

Figure 16 is the chemicals dosing plant structural representation in embodiment 17;

Figure 17 is the chemicals dosing plant structural representation in embodiment 18;

Figure 18 is the chemicals dosing plant structural representation in embodiment 19;

Figure 19 is the chemicals dosing plant application structure schematic diagram in embodiment 20;

Figure 20 is the chemicals dosing plant application structure schematic diagram in embodiment 23;

Figure 21 is the chemicals dosing plant application structure schematic diagram in embodiment 24;

Figure 22 is the chemicals dosing plant application structure schematic diagram in embodiment 25;

Figure 23 is the chemicals dosing plant application structure schematic diagram in embodiment 26;

Figure 24 is the chemicals dosing plant application structure schematic diagram in embodiment 27;

Figure 25 is the chemicals dosing plant application structure schematic diagram in embodiment 28;

Figure 26 is the chemicals dosing plant application structure schematic diagram in embodiment 29;

Figure 27 is the chemicals dosing plant application structure schematic diagram in embodiment 30;

Figure 28 is the chemicals dosing plant application structure schematic diagram in embodiment 31;

Figure 29 is the chemicals dosing plant application structure schematic diagram in embodiment 32.

The specific embodiment

Embodiment 1

Shown in Figure 3, a kind of chemicals dosing plant of being convenient to drug metering and adjusting, comprises grug feeding jar 300, first flow 301, the second runner 302, the 3rd runner 303, metering runner 304, switch valve 305, control cock 306 and impulse mouth 307;

Described grug feeding jar 300 tops are connected and communicate with the top of metering runner 304 by first flow 301;

Described grug feeding jar 300 bottoms are connected and communicate with metering runner 304 bottoms by the second runner 302, on described the second runner 302, switch valve 305 are set;

Described metering runner 304 bottoms are connected and communicate with control cock 306 by the 3rd runner 303;

Described first flow 301, the second runner 302 and the 3rd runner 303 are all selected diameter 5mm, withstand voltage 32MPa and flanged (FLGD) corrosion-resistant steel communicating pipe of two ends;

Described grug feeding jar 300 tops arrange impulse mouth 307;

Described grug feeding jar 300 is horizontal high-pressure tank, tank diameter 400mm, length 2000mm, design pressure 32MPa, welding end socket sealing for two ends;

Described metering runner 304 is hollow tubular, take corrosion-resistant steel as material; Internal diameter 20mm, length 1000mm, the design pressure 32MPa of metering runner 304, its upper and lower two ends welded seal; Metering runner 304 upper side are welded with 50mm corrosion-resistant steel short tube apart from 50mm place, top, for connecting first flow 301; Metering runner 304 lower side are welded with 50mm corrosion-resistant steel short tube apart from 100mm place, bottom, for connecting the second runner 302; Metering runner 304 bottom weldings have 50mm corrosion-resistant steel short tube, for connecting the 3rd runner 303;

Described functional chemical agent arrives the resistance to flow of control cock 306 to the resistance to flow of control cock 306 and self-measuring runner 304 through the 3rd runner 303 through the second runner 302, switch valve 305 from grug feeding jar 300 should be basic identical.

Calculate according to instance data above, the cross-sectional area of described metering runner is much smaller than the transverse cutting area (approximately little 2000 times) of described grug feeding jar; Can meet the object of measuring and regulate dosing flow in the short time.

Embodiment 2

Repeat embodiment 1, its difference is: described metering runner 304 is glass-tube liquid level meter, glass plate type leveler, colored quartz tube type liquidometer or visual-mirror type liquidometer.

Embodiment 3

Repeat embodiment 1, its difference is: magnetic-float type liquidometer or the magnetosensitive electronic double-colored liquid indicator of described metering runner 304 for utilizing law of buoyancy and magnetic couple effect to make.

Embodiment 4

Repeat embodiment 1, its difference is: the teletransmission type magnetic-float type liquidometer of described metering runner 304 for utilizing law of buoyancy, magnetic couple effect and sensor, transmitter, display instrument to make.

Embodiment 5

Shown in Figure 4, repeat embodiment 1, its difference is: described metering runner 304 comprises flanged (FLGD) housing 3041, flanged (FLGD) magnetic floating-ball fluid level transmitter 3042, upper interface 3043, bottom interface 3044 and bottom interface 3045, described magnetic floating-ball fluid level transmitter 3042 lower ends extend to the interior bottom of housing 3041, and magnetic floating-ball fluid level transmitter 3042 upper ends are connected with housing 3041 top flange.Magnetic floating-ball fluid level transmitter 3042 can be converted to liquid level standard electric signal teletransmission.

Embodiment 6

Shown in Figure 5, repeat embodiment 1, its difference is: described metering runner 304 comprises threaded housing 3141, threaded static-pressure type liquid level transmitter 3142, upper interface 3143, bottom interface 3144 and bottom interface 3145, described static-pressure type liquid level transmitter 3142 lower ends extend to the interior bottom of housing 3141, between static-pressure type liquid level transmitter 3142 tops and housing 3141 tops, are threaded; Described static-pressure type liquid level transmitter 3142 is magnetostrictive liquid level transducers.Static-pressure type liquid level transmitter 3142 can be converted to liquid level standard electric signal teletransmission; In the time that liquid level can change fast, static-pressure type liquid level transmitter 3142 can effectively measure liquid level.

Embodiment 7

Shown in Figure 6, repeat embodiment 1, its difference is: described metering runner 304 comprises housing 3241, pressure transformer 3242, upper interface 3243, bottom interface 3244 and bottom interface 3245, and described pressure transformer 3242 is arranged on the bottom of housing 3241.Pressure transformer 3242 can be converted to liquid level standard electric signal teletransmission; In the time that liquid level can change fast, pressure transformer 3242 can effectively measure liquid level.

Embodiment 8

Shown in Figure 7, repeat embodiment 1, its difference is: described metering runner 304 comprises housing 3341, compression indicator 3342, upper interface 3343, bottom interface 3344 and bottom interface 3345, and described compression indicator 3342 is arranged on the bottom of housing 3341; After known pressure table 3342 reading and fluid density (or proportion), can calculate fast corresponding liquid level.In the time that liquid level can change fast, compression indicator 3342 can effectively measure liquid level.

Embodiment 9

Shown in Figure 8, repeat embodiment 1, its difference is: described metering runner 304 comprises housing 3441, magnetic float 3442, upper interface 3443, bottom interface 3444, bottom interface 3445 and coloured iron powder 3446, described magnetic float 3442 is arranged in housing 3441, and coloured iron powder 3446 is arranged on housing 3441 outer walls and magnetic float 3442 relevant positions.Principle of work is: in the time that magnetic float 3442 rises or declines with liquid level, coloured iron powder 3446 of housing 3441 outer walls rises thereupon or declines, and can indicate liquid level.

Embodiment 10

Shown in Figure 9, a kind of chemicals dosing plant of being convenient to drug metering and adjusting, comprises grug feeding jar 300, first flow 301, the second runner 302, the 3rd runner 303, metering runner 304, switch valve 305, control cock 306 and impulse mouth 307;

Described grug feeding jar 300 bottoms are connected and communicate with the 3rd runner 303 by the second runner 302, and the junction of the second runner 302 and the 3rd runner 303 forms threeway connection mode; Described the second runner 302 is provided with switch valve 305;

Described first flow 301, the second runner 302 and the 3rd runner 303 are all selected diameter 25mm, withstand voltage 10MPa and flanged (FLGD) corrosion-resistant steel communicating pipe of two ends;

Described grug feeding jar 300 tops arrange impulse mouth 307;

Described grug feeding jar 300 is horizontal middle pressure tank, tank diameter 2000mm, length 4000mm, design pressure 3MPa, welding end socket sealing for two ends;

Described metering runner 304 is hollow tubular, take transparent plastic material as material; Internal diameter 10mm, length 1000mm, the design pressure 5MPa of metering runner 304, its upper and lower two ends are bonded and sealed; Metering runner 304 upper side are bonded with 50mm plastic tubulature apart from 50mm place, top, for connecting first flow 301; Metering runner 304 lower side are bonded with 50mm plastic tubulature apart from 100mm place, bottom, for connecting the second runner 302; Metering runner 304 bottoms are bonded with 50mm plastic tubulature, for connecting the 3rd runner 303;

Calculate according to instance data above, the cross-sectional area of described metering runner is much smaller than the cross-sectional area (approximately little 80000 times) of described grug feeding jar; Can meet the object of measuring and regulate chemical feeding quantity in the short time.

Embodiment 11

Shown in Figure 10, repeat embodiment 10, its difference is: described grug feeding jar 300 bottoms are connected and communicate with the 3rd runner 303 by the second runner 302.

Embodiment 12

Shown in Figure 11, a kind of chemicals dosing plant of being convenient to drug metering and adjusting, comprises grug feeding jar 300, first flow 301, the second runner 302, the 3rd runner 303, metering runner 304, switch valve 305, control cock 306 and impulse mouth 307;

Described grug feeding jar 300 bottoms are connected and communicate with the bottom of metering runner 304 by the second runner 302; Described the second runner 302 is provided with switch valve 305;

Described first flow 301, the second runner 302 and the 3rd runner 303 are all selected diameter 10mm, withstand voltage 5MPa and flanged (FLGD) corrosion-resistant steel communicating pipe of two ends;

Described grug feeding jar 300 tops arrange impulse mouth 307;

Described grug feeding jar 300 is horizontal low pressure tank, tank diameter 1000mm, length 2500mm, design pressure 1MPa, welding end socket sealing for two ends;

Described metering runner 304 is corrosion-resistant steel hollow tubular, its internal diameter 15mm, length 1800mm, design pressure 1MPa; Metering runner 304 upper side are welded with 50mm corrosion-resistant steel short tube apart from 50mm place, top, for connecting first flow 301; Metering runner 304 lower side are welded with 50mm corrosion-resistant steel short tube apart from 100mm place, bottom, for connecting the second runner 302; Metering runner 304 bottom weldings have 50mm corrosion-resistant steel short tube, for connecting the 3rd runner 303;

Calculate according to instance data above, the plane of structure that cuts of described metering runner amasss the transverse cutting area (approximately little 10000 times) much smaller than described grug feeding jar; Can meet the object of measuring and regulate chemical feeding quantity in the short time;

The top of described grug feeding jar 300 is provided with safety valve 308;

The top of described grug feeding jar 300 is provided with compression indicator 309;

Described grug feeding jar 300 tops are provided with vent 310;

The bottom of described grug feeding jar 300 is provided with sewage draining exit 311;

Described grug feeding jar 300 is provided with tonic interface 312.

Embodiment 13

Shown in Figure 12, a kind of chemicals dosing plant of being convenient to drug metering and adjusting, comprises grug feeding jar 400, first flow 401, the second runner 402, the 3rd runner 403, dividing plate 404, switch valve 405, control cock 406 and impulse mouth 407;

In the present embodiment, described grug feeding jar 300 is horizontal low pressure cuboid tank, and length of tank is 2500mm, and tank body width is 1000mm, and tank body height is 1000mm, and design pressure is 1MPa;

Described grug feeding jar 400 inside are divided into drug storage chamber 408 arranged side by side and measurement chamber 409 with 1 dividing plate 404; Described measurement chamber 409 cross-sectional plane is from top to bottom the oblong of 10mm × 1000mm; Calculate according to data above, the cross-sectional area of described measurement chamber 409 is much smaller than the cross-sectional area (approximately 250 times) in described drug storage chamber 408; Can meet the object of measuring and regulate chemical feeding quantity in the short time;

The top of described drug storage chamber 408 and measurement chamber 409 is communicated with by first flow 401, and in the present embodiment, first flow 401 is for being arranged on the duct on dividing plate;

Described measurement chamber 409 bottoms are connected and communicate with control cock 406 by the 3rd runner 403;

408 bottoms, described drug storage chamber are connected and communicate with the 3rd runner 403 by the second runner 402; On described the second runner 402, establish switch valve 405;

Impulse mouth 407 is established at described grug feeding jar 400 tops.

Compared with the technology of the technical scheme of the present embodiment and embodiment 1-12, just a kind of simple distortion, is the setting that is structure as a whole of grug feeding jar and metering runner in essence; By dividing plate is set, make the function and efficacy in drug storage chamber be equal to the grug feeding jar in above-described embodiment, make the function and efficacy of measurement chamber be equal to the metering runner in above-described embodiment;

Embodiment 14

Shown in Figure 13, repeat embodiment 13, its difference is:

Described grug feeding jar 300 is horizontal high-pressure tank, tank diameter 500mm, length 2500mm, design pressure 25MPa, welding end socket sealing for two ends;

Described grug feeding jar 400 inside are divided into drug storage chamber 408 with 2

dividing plates

404 and 409,2 clapboard spacings of measurement chamber are 10mm;

Described measurement chamber 409 is by left drug storage chamber 4081 and right drug storage chamber 4082 double teams, and cavity bottom is a part for grug feeding jar bottom outer wall, and cavity bottom and grug feeding jar bottom outer wall share;

Described measurement chamber 409 cross-sectional plane from top to bottom is all rectangle, and maximum cross section is 500mm × 10mm oblong; Calculate according to data above, the maximum cross-section area of described measurement chamber 409 is much smaller than the maximum cross-section area (approximately 250 times) in described drug storage chamber 408; Can meet the object of measuring and regulate chemical feeding quantity in the short time;

Embodiment 15

Shown in Figure 14, repeat embodiment 13 or 14, its difference is:

Described grug feeding jar 300 is horizontal high-pressure tank, tank diameter 1000mm, length 2000mm, design pressure 15MPa, welding end socket sealing for two ends;

Described measurement chamber 409 is arranged on the separate chamber of the high 900mm in grug feeding jar 400; Described measurement chamber 409 cross-sectional plane is from top to bottom the square of 10 × 10mm or is the oblong of 10 × 20mm or is the circle of diameter 20mm.

Embodiment 16

Shown in Figure 15, repeat embodiment 13,14 or 15, its difference is: on described measurement chamber 409 bottoms or the lateral wall of bottom, be provided with pressure transformer 4091.After known pressure transmitter 4091 readings and fluid density (or proportion), can calculate fast corresponding liquid level; Therefore,, in the time that liquid level can change fast, pressure transformer can effectively measure liquid level.

Embodiment 17

Shown in Figure 16, repeat embodiment 13,14 or 15, its difference is: in described measurement chamber 409, be provided with magnetic float transmitter 4092; Described magnetic float transmitter comprises baffle plate 40921, magnetic float 40922, detected catheter 40923 and transmitter 40924.The liquid level that can detect in measurement chamber with magnetic float transmitter 4092.

Embodiment 18

Shown in Figure 17, repeat embodiment 13,14 or 15, its difference is: in described measurement chamber 409, be provided with static-pressure type liquid level transmitter 4093; Described static-pressure type liquid level transmitter 4093 is magnetostrictive liquid level transducers.Can detect the liquid level in close measurement chamber with static-pressure type liquid level transmitter.

Embodiment 19

Shown in Figure 18, repeat embodiment 13,14 or 15, its difference is: the arranged outside of described measurement chamber 409 bottoms or bottom has compression indicator 4094.After known pressure meter reading and fluid density (or proportion), can calculate fast corresponding liquid level; Therefore,, in the time that liquid level can change fast, compression indicator can effectively measure liquid level.

Embodiment 20

Shown in Figure 19, flow metering and the control method of device in gas well oil pipe dosing process, comprises the steps: described in embodiment 1-12

1) line:

First with impulse pipeline 501, the impulse mouth 307 of grug feeding jar 300 is communicated with gas well sleeve valve 503, then the control cock of chemicals dosing plant 306 is communicated with gas well tubing valve 504 with dosing pipeline 502;

2) dosing:

Open switch valve 305, control cock 306 and gas well sleeve valve 503, gas well tubing valve 504, the functional chemical agent in grug feeding jar 300 will enter in gas well oil pipe by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502, gas well tubing valve 504 successively under the effect of gas well casing pressure; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously;

Known by knowledge known in this field: gas well is made up of sleeve pipe, oil pipe, the inevitable pressure far above gas well oil pipe of the pressure of gas well sleeve pipe (have even exceed 10MPa more than), the inevitable pressure higher than natural gas line of pressure of gas well oil pipe; After grug feeding jar 300 being communicated with gas well sleeve valve 503 with impulse pipeline 501, grug feeding jar 300 internal pressures are suitable with gas well casing pressure, inevitable higher than gas well oil pipe, natural gas line 500 pressure, the functional chemical agent in grug feeding jar 300 can flow in gas well oil pipe, natural gas line 500;

3) metering:

Closing switch valve 305, the medicament in grug feeding jar 300 stops flowing out, and the medicament in metering runner 304 starts to enter in gas well tubing valve 504 by control cock 306, dosing pipeline 502, the liquid level fast reducing of metering runner 304; Reduce required times by measuring, record metering runner 304 liquid levels, can calculate fast according to the known cross-sectional area (claiming again flow area) of metering runner 304 the dosing flow of metering runner 304;

4) regulate dosing flow:

Go out the current dosing flow of grug feeding jar 300 according to metering runner 304 quick metering, the size requiring according to chemical feeding quantity is adjusted control cock 306 apertures; Repeat metering and this regulating step, the dosing flow of metering runner 304 is adjusted to required dosing flow; Then switch valve 305 is opened, the medicament in grug feeding jar 300 will enter in gas well tubing valve 504 with required dosing flow.

Or, going out the current dosing flow of grug feeding jar 300 according to metering runner 304 quick metering, the size requiring according to chemical feeding quantity is adjusted control cock 306 apertures; Then open switch valve 305 until measure the liquid level of runner 304 and the liquid level equilibrium of grug feeding jar 300, then closing switch valve 305, quick metering goes out to measure the dosing flow of runner 304 again; Repeat metering and this regulating step, the dosing flow of metering runner 304 is adjusted to required dosing flow; Then switch valve 305 is opened, the medicament in grug feeding jar 300 will enter in gas well tubing valve 504 with required dosing flow.

Calculated from knowledge known in this field: due to the total length (or equivalent total length) very short (generally can not exceed 1 meter) of the second runner 302, switch valve 305, dosing pipeline 502 length (generally more than 10 meters) well below metering runner 304 to gas well tubing valve 504; The resistance to flow that medicament enters metering runner 304 by grug feeding jar 300 is negligible, and it is same negligible with the dosing flow difference that grug feeding jar 300 flows into gas well tubing valve 504 that metering runner 304 flows into the dosing flow of gas well tubing valve 504; Therefore dosing flow that, can accurate measurement grug feeding jar 300 with metering runner 304;

Embodiment 21

Shown in Figure 11, Figure 19, described grug feeding jar 300 is manganese steel pressure container, internal diameter 600mm(external diameter 700mm), design pressure 25MPa, length 1500mm, two ends ellipse head welded seal; 1 DN20mm16Mn steel flange short tube of the upper and lower each welding in end socket place, right side; 1 DN25mm manganese steel flange form relief valve connection of center of top welding mounting spring formula safety valve, top left side 1 DN15mm manganese steel flange form vent 307 of welding is also installed needle valve, and top right side 1 DN15mm manganese steel thread pressure table interface of welding is also installed needle valve, compression indicator; 1 DN25mm manganese steel flange form tonic interface of bottom welding is also installed needle valve, boiler check valve;

Described first flow 301 and the second runner 302 are stainless steel tube, diameter DN20mm, withstand voltage 32MPa, two ends band DN20mm steel flange;

Described metering runner 304 is stainless steel tubes, diameter DN20mm(internal diameter 20mm), length 1400mm, design pressure 32MPa; Upper and lower two ends welded seal, 1 DN20mm steel flange short tube of the upper and lower each welding in same side, upper flange short tube is apart from top 150mm, and lower flange short tube is apart from bottom 150mm, 1 DN15mm corrosion-resistant steel screw thread short tube of bottom welding (the 3rd runner 303); Metering runner 304 bottom than the grug feeding jar 300 low 350mm in bottom, top than the grug feeding jar 300 high 350mm in top;

The DN15mm304 corrosion-resistant steel screw thread short tube of metering runner 304 bottom weldings is the 3rd runners 303;

Described control cock 306 is the DN15mm corrosion-resistant steel shutoff valve that is threaded;

Described switch valve 305 is DN20mm steel flange shutoff valve.

The concrete operation step that improves dosing flow is:

1) closing switch valve 305, the medicament in grug feeding jar 300 stops flowing out, and the medicament in metering runner 304 enters in gas well tubing valve 504 by control cock 306, dosing pipeline 502, the liquid level fast reducing of metering runner 304;

2) reduce the required time of certain liquid level (as 50mm) by portable ultrasonic wave liquid level instrumentation amount metering runner 304 liquid levels, calculate the medicament flow of its outflow according to its known cross-sectional area, can obtain current dosing flow;

3) then open large control cock 306 apertures, obtain new dosing flow with measuring runner 304, and judge whether this new dosing flow satisfies the demands; If this new dosing flow is still less than required dosing flow, control cock 306 apertures of again performing fighting, again obtain new dosing flow with metering runner 304, and judge whether this new dosing flow satisfies the demands.Otherwise, if this new dosing flow has been greater than required dosing flow, reduce control cock 306 apertures, again obtain new dosing flow with metering runner 304, and judge whether this new dosing flow satisfies the demands;

4) so adjust several times, the dosing flow of metering runner 304 can be increased to required flow;

5) then open switch valve 305, the medicament in grug feeding jar 300 will enter in gas well tubing valve 504 with required dosing flow, thereby has realized dosing flow quick metering, quick-adjustsing object.

From knowledge known in this field: the stainless steel tube constant cross-sectional area of internal diameter 20mm is 0.000314m ²(or 314mm ²), the liquid measure that liquid level reduces 50mm is 0.0157 liter (or 15.7 milliliters); The dosing flow metering of 0.5 l/h confirms that the required time is only 113 seconds; The dosing flow metering of 1.25 ls/h confirms that the required time is only 45 seconds.

Calculated from knowledge known in this field: with the method for ultrasonic level gage or handheld portable applying ultrasonic lever meter to measure closed vessel liquid level be the conventional technological means in this area, can be used in the liquid level in noncontact Quick Measurement metal tube, can be used in Quick Measurement and found the liquid level and the liquid measure that decline to liquid in pipe.

Embodiment 22

Repeat embodiment 21, its difference is:

Described metering runner 304 be bore 50mm, length 500mm, design pressure 25MPa, bottom than the grug feeding jar 300 high 100mm in bottom, top than the magnetic-float type liquidometer of the grug feeding jar 300 low 100mm in top.

The control step that reduces dosing flow is:

2), according to the magnetic turnover panel graduation indication of magnetic-float type liquidometer, survey record metering runner 304 liquid levels reduce the required time of certain liquid level (as 10mm), calculate the medicament flow of its outflow according to its known cross-sectional area, can obtain current dosing flow;

3) then reduce control cock 306 apertures, obtain new dosing flow with measuring runner 304, and judge whether this new dosing flow satisfies the demands; If this new dosing flow is still greater than required dosing flow, again reduce control cock 306 apertures, again obtain new dosing flow with metering runner 304, and judge whether this new dosing flow satisfies the demands; Otherwise, if this new dosing flow has been less than required dosing flow, open large control cock 306 apertures, again obtain new dosing flow with metering runner 304, and judge whether this new dosing flow satisfies the demands;

Calculated from knowledge known in this field: the stainless steel tube constant cross-sectional area of bore 50mm is 0.0019625m ²(or 1962.5mm ²), the liquid measure that liquid level reduces 10mm is 0.019625 liter (or 19.625 milliliters); The dosing flow metering of 0.5 l/h confirms that the required time is only 141 seconds; The dosing flow metering of 1.25 ls/h confirms that the required time is only 57 seconds.

From knowledge known in this field: measure, show that with magnetic-float type liquidometer the method for closed vessel liquid level is the conventional technological means in this area, what bottom had has foul valve and blow-off pipe, what have does not have foul valve and a blow-off pipe.

Embodiment 23

Shown in Figure 20, repeat embodiment 20,21 or 22, its difference is only: flow metering and adjusting by application of installation described in embodiment 1-12 in well site natural gas line dosing process.Difference structurally is only: the impulse mouth 307 on grug feeding jar 300 is communicated with gas well sleeve valve 503 with impulse pipeline 501, then control cock 306 is communicated with well site natural gas line 500 with dosing pipeline 502.

Embodiment 24

Ginseng as shown in Figure 21, repeats embodiment 20,21 or 22, and its difference is only: flow metering and adjusting by application of installation described in embodiment 1-12 in oil well 600 oil pipe dosing processes.Difference structurally is only: the impulse mouth 307 on grug feeding jar 300 is communicated with sleeve valve of oil well 603 with impulse pipeline 501, then control cock 306 is communicated with oil well oil conduit valve 604 with dosing pipeline 502.

Embodiment 25

Ginseng as shown in Figure 22, repeats embodiment 20,21 or 22, and its difference is only: by flow metering and the adjusting in natural gas line (or gas gathering station external transport pipeline) dosing process between station of application of installation described in embodiment 1-12.Difference structurally is only: the impulse mouth 307 on grug feeding jar 300 and the gas well pipeline 703 that enters the station is communicated with impulse pipeline 501, then natural gas line (or gas gathering station external transport pipeline) 704 between control cock 306 and station is communicated with dosing pipeline 502.

Embodiment 26

Ginseng as shown in Figure 23, repeats embodiment 23, flow metering and adjusting by application of installation described in embodiment 1-12 in well site natural gas line dosing process.Difference structurally is only: first by grug feeding jar 300 bottom shelf height to exceeding christmas tree tubing valve 504 height, then with impulse pipeline 501, the impulse mouth 307 on grug feeding jar 300 is communicated with the natural gas line 500 of christmas tree one side, then control cock 306 is communicated with the tubing valve 504 of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open switch valve 305, control cock 306 and gas well tubing valve 504, the functional chemical agent in grug feeding jar 300 will enter in the natural gas line of well site by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502, gas well tubing valve 504, top four-way 505 successively under Action of Gravity Field; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously.

Embodiment 27

Ginseng as shown in Figure 24, repeats embodiment 23, flow metering and adjusting by application of installation described in embodiment 1-12 in gas well sleeve pipe dosing process.Difference structurally is only: first by grug feeding jar 300 bottom shelf height to exceeding christmas tree sleeve valve 503 height, then with impulse pipeline 501, the impulse mouth 307 on grug feeding jar 300 is communicated with the gas well sleeve valve 503 of christmas tree one side, then control cock 306 is communicated with the gas well sleeve valve of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open the gas well sleeve valve 503 of switch valve 305, control cock 306 and christmas tree both sides, the functional chemical agent in grug feeding jar 300 will enter in gas well sleeve pipe by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502, gas well sleeve valve 503 successively under Action of Gravity Field; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously.

Embodiment 28

Ginseng as shown in Figure 25, repeats embodiment 23, flow metering and adjusting by application of installation described in embodiment 1-12 in gas well oil pipe dosing process.Difference structurally is only: first by grug feeding jar 300 bottom shelf height to exceeding christmas tree tubing valve 504 height, then with impulse pipeline 501, the impulse mouth 307 on grug feeding jar 300 is communicated with the gas well tubing valve 504 of christmas tree one side, then control cock 306 is communicated with same gas well oil pipe 504 valves with dosing pipeline 502.

Difference in dosing step is only: open switch valve 305, control cock 306 and gas well tubing valve 504, the functional chemical agent in grug feeding jar 300 will enter in gas well oil pipe by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502, gas well tubing valve 504 successively under Action of Gravity Field; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously.

Embodiment 29

Ginseng as shown in Figure 26, repeats embodiment 23, flow metering and adjusting by application of installation described in embodiment 1-12 in oil well 600 sleeve pipe dosing processes.Difference structurally is only: first by grug feeding jar 300 bottom shelf height to exceeding Christmas tree casing valve 603 height, then with impulse pipeline 501, the impulse mouth 307 on grug feeding jar 300 is communicated with the sleeve valve of oil well 603 of christmas tree one side, then control cock 306 is communicated with the sleeve valve of oil well of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open oil well 600 sleeve valves 603 of switch valve 305, control cock 306 and christmas tree both sides, the functional chemical agent in grug feeding jar 300 will enter in oil well 600 sleeve pipes by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502, oil well 600 sleeve valves 603 successively under Action of Gravity Field; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously.

Embodiment 30

Ginseng as shown in Figure 27, repeats embodiment 23, flow metering and adjusting by application of installation described in embodiment 1-12 in flow channel for liquids dosing process.Difference structurally is only: the impulse mouth 307 on grug feeding jar 300 is communicated with compressed gas source 803 with impulse pipeline 501, then control cock 306 is communicated with flow channel for liquids 804 with dosing pipeline 502.

Described compressed gas source can be any one of nitrogen gas cylinder, liquefied gas bottle, oxygen bottle, acetylene cylinder, carbon dioxide canister, compression natural gas tank (as CNG), instrument wind, air compressor, blowdown fan, air pump, mobile compressed gas source, compression natural gas (as CNG), liquid nitrogen, liquid CO 2, blue gas (as LNG).

Embodiment 31

Ginseng as shown in Figure 28, repeats embodiment 23, by flow metering and the adjusting in natural gas line (or gas gathering station external transport pipeline) dosing process between station of application of installation described in embodiment 1-12.Difference structurally is only: first by grug feeding jar 300 bottom shelf height to exceeding natural gas line between station (or gas gathering station external transport pipeline) 704 height, then with impulse pipeline 501, natural gas line (or gas gathering station external transport pipeline) 704 between the impulse mouth 307 on grug feeding jar 300 and station is communicated with, then with dosing pipeline 502 by control cock 306 with stand between natural gas line (or gas gathering station external transport pipeline) 704 be communicated with.

Difference in dosing step is only: open switch valve 305, control cock 306, the functional chemical agent in grug feeding jar 300 will enter in natural gas line between station (or gas gathering station external transport pipeline) by switch valve 305, metering runner 304, control cock 306, dosing pipeline 502 successively under Action of Gravity Field; Liquid level in grug feeding jar 300 and metering runner 304 reaches balance automatically simultaneously.

Embodiment 32

As shown in Figure 29, flow metering and the control method of device in gas well oil pipe dosing process, comprises the steps: ginseng described in embodiment 13-19

1) line:

First with impulse pipeline 501, the impulse mouth 407 of grug feeding jar 400 is communicated with gas well sleeve valve 503, then the control cock of chemicals dosing plant 406 is communicated with gas well tubing valve 504 with dosing pipeline 502;

2) dosing:

Open switch valve 405, control cock 406 and gas well sleeve valve 503, gas well tubing valve 504, the functional chemical agent in drug storage chamber 408 will enter in gas well oil pipe by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502, gas well tubing valve 504 successively under the effect of gas well casing pressure; Liquid level in drug storage chamber 408 and measurement chamber 409 reaches balance automatically simultaneously;

3) metering:

Closing switch valve 405, the medicament in drug storage chamber 408 stops flowing out, and the medicament in measurement chamber 409 starts to enter in gas well tubing valve 504 by control cock 406, dosing pipeline 502, the liquid level fast reducing of measurement chamber 409; Reduce required time by measuring, record measurement chamber 409 liquid levels, can calculate fast according to the known cross-sectional area of measurement chamber 409 (claiming again flow area) the dosing flow of measurement chamber 409;

4) regulate dosing flow:

Go out the current dosing flow in drug storage chamber 408 according to measurement chamber 409 quick metering, the size requiring according to chemical feeding quantity is adjusted control cock 406 apertures; Repeat metering and this regulating step, the dosing flow of measurement chamber 409 is adjusted to required dosing flow; Then switch valve 405 is opened, the medicament in drug storage chamber 408 will enter in gas well tubing valve 504 with required dosing flow.

Or, going out the current dosing flow in drug storage chamber 408 according to measurement chamber 409 quick metering, the size requiring according to chemical feeding quantity is adjusted control cock 406 apertures; Then open switch valve 405 until the liquid level equilibrium in the liquid level of measurement chamber 409 and drug storage chamber 408, then closing switch valve 405, quick metering goes out the dosing flow of measurement chamber 409 again; Repeat metering and this regulating step, the dosing flow of measurement chamber 409 is adjusted to required dosing flow; Then switch valve 405 is opened, the medicament in drug storage chamber 408 will enter in gas well tubing valve 504 with required dosing flow.

Embodiment 33

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in well site natural gas line dosing process.Difference structurally is only: the impulse mouth 407 on grug feeding jar 400 is communicated with gas well sleeve valve 503 with impulse pipeline 501, then control cock 406 is communicated with well site natural gas line 500 with dosing pipeline 502.

Embodiment 34

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in oil well oil conduit dosing process.Difference structurally is only: the impulse mouth 407 on grug feeding jar 400 is communicated with sleeve valve of oil well 603 with impulse pipeline 501, then control cock 406 is communicated with oil well oil conduit valve 604 with dosing pipeline 502.

Embodiment 35

Repeat embodiment 32, its difference is only: by flow metering and the adjusting in natural gas line (or gas gathering station external transport pipeline) dosing process between station of application of installation described in embodiment 13-19.Difference structurally is only: the impulse mouth 407 on grug feeding jar 400 and the gas well pipeline 703 that enters the station is communicated with impulse pipeline 501, then natural gas line (or gas gathering station external transport pipeline) 704 between control cock 406 and station is communicated with dosing pipeline 502.

Embodiment 36

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in well site natural gas line dosing process.Difference structurally is only: first by grug feeding jar 400 bottom shelf height to exceeding christmas tree tubing valve 504 height, then with impulse pipeline 501, the impulse mouth 407 on grug feeding jar 400 is communicated with the natural gas line 500 of christmas tree one side, then control cock 406 is communicated with the tubing valve 504 of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open switch valve 405, control cock 406 and gas well tubing valve 504, the functional chemical agent in grug feeding jar 400 drug storage chambeies 408 will enter in the natural gas line of well site by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502, gas well tubing valve 504, top four-way 505 successively under Action of Gravity Field; Simultaneously drug storage chamber 408 and and measurement chamber 409 in liquid level automatically reach balance.

Embodiment 37

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in gas well sleeve pipe dosing process.Difference structurally is only: first by grug feeding jar 400 bottom shelf height to exceeding christmas tree sleeve valve 503 height, then with impulse pipeline 501, the impulse mouth 407 on grug feeding jar 400 is communicated with the gas well sleeve valve 503 of christmas tree one side, then control cock 406 is communicated with the gas well sleeve valve 503 of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open the gas well sleeve valve 503 of switch valve 405, control cock 406 and christmas tree both sides, the functional chemical agent in grug feeding jar 400 drug storage chambeies 408 will enter in gas well sleeve pipe by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502, gas well sleeve valve 503 successively under Action of Gravity Field; Simultaneously drug storage chamber 408 and and measurement chamber 409 in liquid level automatically reach balance.

Embodiment 38

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in gas well oil pipe dosing process.Difference structurally is only: first by grug feeding jar 400 bottom shelf height to exceeding christmas tree tubing valve 504 height, then with impulse pipeline 501, the impulse mouth 407 on grug feeding jar 400 is communicated with the gas well tubing valve 504 of christmas tree one side, then control cock 406 is communicated with same gas well tubing valve 504 with dosing pipeline 502.

Difference in dosing step is only: open switch valve 405, control cock 406 and gas well tubing valve 504, the functional chemical agent in grug feeding jar 400 drug storage chambeies 408 will enter in gas well sleeve pipe by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502, gas well tubing valve 504 successively under Action of Gravity Field; Simultaneously drug storage chamber 408 and and measurement chamber 409 in liquid level automatically reach balance.

Embodiment 39

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in oil well casing dosing process.Difference structurally is only: first by grug feeding jar 400 bottom shelf height to exceeding oil well 600 Christmas tree casing valves 603 height, impulse mouth 407 on grug feeding jar 400 is communicated with the sleeve valve of oil well 603 of christmas tree one side with impulse pipeline 501, then control cock is communicated with the sleeve valve of oil well 603 of christmas tree opposite side with dosing pipeline 502.

Difference in dosing step is only: open the sleeve valve 603 of switch valve 405, control cock 406 and christmas tree both sides, the functional chemical agent in grug feeding jar 400 drug storage chambeies 408 will enter in oil well casing by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502, sleeve valve of oil well 603 successively under Action of Gravity Field; Simultaneously drug storage chamber 408 and and measurement chamber 409 in liquid level automatically reach balance.

Embodiment 40

Repeat embodiment 32, its difference is only: flow metering and adjusting by application of installation described in embodiment 13-19 in flow channel for liquids dosing process.Difference structurally is only: the impulse mouth 407 on grug feeding jar 400 is communicated with compressed gas source 803 with impulse pipeline 501, then control cock 406 is communicated with flow channel for liquids 804 with dosing pipeline 502.

Embodiment 41

Repeat embodiment 32, its difference is only: by flow metering and the adjusting in natural gas line (or gas gathering station external transport pipeline) dosing process between station of application of installation described in embodiment 13-19.Difference structurally is only: first by grug feeding jar 400 bottom shelf height to exceeding natural gas line between station (or gas gathering station external transport pipeline) 704 height, then with impulse pipeline 501, natural gas line (or gas gathering station external transport pipeline) 704 between the impulse mouth 407 on grug feeding jar 400 and station is communicated with, then with dosing pipeline 502 by control cock 406 with stand between natural gas line (or gas gathering station external transport pipeline) 704 be communicated with.

Difference in dosing step is only: open switch valve 405, control cock 406, the functional chemical agent in grug feeding jar 400 drug storage chambeies 408 will enter in natural gas line between station (or gas gathering station external transport pipeline) by switch valve 405, the 3rd runner 403, control cock 406, dosing pipeline 502 successively under Action of Gravity Field; Simultaneously drug storage chamber 408 and and measurement chamber 409 in liquid level automatically reach balance.

The word in the description orientation that adopted herein " on ", D score, " left side ", " right side " etc. are all convenience in order to illustrate based on the orientation shown in drawing in accompanying drawing, in actual device, these orientation may be different due to the disposing way of device.

Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all embodiments.Everyly belong to apparent variation or the still row in protection domain of the present utility model of variation that the technical solution of the utility model extends out.

Claims

1. a chemicals dosing plant of being convenient to drug metering and adjusting, is characterized in that: comprise grug feeding jar, first flow, the second runner, the 3rd runner, metering runner, switch valve, control cock and impulse mouth;

Described grug feeding jar top or top arrange impulse mouth;

2. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 1, is characterized in that: described first flow, the second runner and the 3rd runner are any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly.

3. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 1, is characterized in that: described metering runner is any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly.

4. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, is characterized in that: described metering runner is glass-tube liquid level meter, glass plate type leveler, colored quartz tube type liquidometer or visual-mirror type liquidometer.

5. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, is characterized in that: described metering runner is magnetic-float type liquidometer or the magnetosensitive electronic double-colored liquid indicator that utilizes law of buoyancy and magnetic couple effect to make.

6. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, is characterized in that: described metering runner is the teletransmission type magnetic-float type liquidometer that utilizes law of buoyancy, magnetic couple effect and sensor, transmitter, display instrument to make.

7. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, it is characterized in that: described metering runner comprises flanged (FLGD) housing, flanged (FLGD) magnetic floating-ball fluid level transmitter, upper interface, bottom interface and bottom interface, described magnetic floating-ball fluid level transmitter lower end extends to bottom in housing.

8. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, it is characterized in that: described metering runner comprises threaded housing, threaded static-pressure type liquid level transmitter, upper interface, bottom interface and bottom interface, described static-pressure type liquid level transmitter lower end extends to bottom in housing; Described static-pressure type liquid level transmitter is magnetostrictive liquid level transducer.

9. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, it is characterized in that: described metering runner comprises housing, pressure transformer, upper interface, bottom interface and bottom interface, described pressure transformer is arranged on bottom or the bottom of housing.

10. the chemicals dosing plant of being convenient to drug metering and adjusting according to claim 3, is characterized in that: described metering runner comprises housing, compression indicator, upper interface, bottom interface and bottom interface, and described compression indicator is arranged on bottom or the bottom of housing.

11. chemicals dosing plants of being convenient to drug metering and adjusting according to claim 3, it is characterized in that: described metering runner comprises housing, magnetic float, upper interface, bottom interface, bottom interface and coloured iron powder, described magnetic float is arranged in housing, and coloured iron powder is arranged on outside housing and magnetic float relevant position.

12. chemicals dosing plants of being convenient to drug metering and adjusting according to claim 1, it is characterized in that: the design pressure of described control cock should be lower than the design pressure of metering runner, and described control cock is selected from gate valve, needle valve, shutoff valve, ball valve or butterfly valve.

13. chemicals dosing plants of being convenient to drug metering and adjusting according to claim 1, is characterized in that: described impulse mouth is any one or any two or more combination of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly.

14. chemicals dosing plants of being convenient to drug metering and adjusting according to claim 1, is characterized in that:

Described grug feeding jar is provided with safety valve, and described safety valve is arranged at grug feeding jar top or top;

Described grug feeding jar is provided with compression indicator or pressure transformer;

Described grug feeding jar is provided with vent, and described vent is arranged at grug feeding jar top or top;

Described grug feeding jar is provided with sewage draining exit;

Described grug feeding jar is provided with tonic interface.

Be convenient to the chemicals dosing plant of drug metering and adjusting, it is characterized in that for 15. 1 kinds: comprise grug feeding jar, first flow, the second runner, the 3rd runner, metering runner, switch valve, control cock and impulse mouth;

Described grug feeding jar top or top arrange impulse mouth;

Be convenient to the chemicals dosing plant of drug metering and adjusting, it is characterized in that for 16. 1 kinds: comprise grug feeding jar, dividing plate, first flow, the second runner, the 3rd runner, switch valve, control cock and impulse mouth;

Described grug feeding jar top or top arrange impulse mouth.

17. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: described measurement chamber is the block form cavity arranged side by side with drug storage chamber being isolated into 1 dividing plate; Or described measurement chamber be with 2 be isolated into upper spacer by the enclosing type cavity of drug storage chamber double team, at the bottom of cavity bottom and grug feeding jar or tank skin share, or cavity has at least 1 facade and dosing tank skin shared.

18. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: described measurement chamber is the separate chamber in grug feeding jar that is arranged on being isolated into dividing plate.

19. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: described first flow, the second runner and the 3rd runner are any one or any two or more combinations of the inside pipeline that is provided with fluid passage, pipe fitting, duct, through hole, component of machine, mechanical assembly.

20. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: the shape of cross section of described measurement chamber is regular geometric configuration; Described measurement chamber cross-sectional area is from top to bottom equal to.

21. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 20, it is characterized in that: the cross-sectional plane of described measurement chamber is square, oblong or circle.

22. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: on the lateral wall of described measurement chamber bottom or bottom, be provided with pressure transformer.

23. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: in the measurement chamber of described grug feeding jar, be provided with magnetic float transmitter; Described magnetic float transmitter comprises baffle plate, magnetic float, detected catheter and transmitter.

24. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: in the measurement chamber of described grug feeding jar, be provided with static-pressure type liquid level transmitter; Described static-pressure type liquid level transmitter is magnetostrictive liquid level transducer.

25. according to the chemicals dosing plant of being convenient to drug metering and adjusting described in claim 16, it is characterized in that: on the measurement chamber bottom of described grug feeding jar or the lateral wall of bottom, be provided with compression indicator.