CN2036667U - Floating air-blown type differential densimeter - Google Patents
Floating air-blown type differential densimeter Download PDFInfo
- Publication number
- CN2036667U CN2036667U CN 88209136 CN88209136U CN2036667U CN 2036667 U CN2036667 U CN 2036667U CN 88209136 CN88209136 CN 88209136 CN 88209136 U CN88209136 U CN 88209136U CN 2036667 U CN2036667 U CN 2036667U
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- China
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- type differential
- pressure side
- floating
- blown type
- mud
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Abstract
The utility model relates to a floating air-blown type differential densimeter which is suitable for mud density measurement in the field of drilling engineering, and the utility model can also be used for density measurement of milky suspension in industries such as hydro metallurgy, food, pharmacy, and papermaking. The utility model increases a floating device, a guide frame, and a lower limiter on the basis of fixed air-blown type differential densimeter. So the sensor floats up and down with the liquid level of the measured liquid, the shortcoming that the fixed air-blown type differential densimeter is unsuitable for the density measurement of the suspension of large upper and lower floating is overcome, and the application field of the floating air-blown type differential densimeter is enlarged.
Description
The utility model is a kind of unsteady air blowing type differential density instrument.Be used for the drilling engineering field automatically, the continuous coverage mud density, also can be used for hydrometallurgy, food, papermaking, the automatic continuous coverage emulsus of pharmacy industry suspension density.
At present, mud density is measured in domestic drilling engineering field, continues to use the way of manually weighing in decades always.The measuring device that uses is the mud balance, and its structure is the scale of a band scale, and there is the edge of a knife of support the centre, and an end is the container of a constant volume, and the other end is the counterweight that moves about along scale.The process of weighing is: at first sampling, get the mud that a part needs density measurement, and pour on request in the constant volume container of mud balance; Next is weighed, and the edge of a knife of mud balance is placed on the V-shaped groove of support, stirs counterweight along scale then, makes mud and counterweight reach equalising torque, and scale is the level of state; The value of reading at last, the density of reading tested mud from scale.The numerical value stochastic error that the method for this weighing obtains is big, can not convert collectable electric signal of continuous demonstration again to.Sometimes mud managerial personnel test leakage or measure inaccurately all can influence carrying out smoothly of drilling engineering, even can cause serious consequence.Less than actual value, may cause leakage or oil layer pollution such as the density value of measuring; Measured value may cause the well kick well slough greater than actual value, can cause blowout when serious.
In the chemical industry, measure true solution density, the practice of using air blowing type differential density instrument is arranged.As shown in Figure 1.With the metal tube with fixing discrepancy in elevation H of two lower end perforates high-pressure side (8), low-pressure side (7), be fixed on the top cover of container (9) or on the sidewall as air blowing type differential density sensor.Each pipe connects a constant current decompression blowning installation (2) respectively, blows in fluid to be measured (10), and the metal tube of high-pressure side (8) is longer, and the metal tube of low-pressure side (7) is shorter, and the pressure that forms each pipe during air blowing falls.The pressure reduction of two pipes calculates with following formula:
ΔP＝HρG
Wherein: the H-mouth of pipe discrepancy in elevation; ρ-fluid to be measured density; G-acceleration of gravity.High and low pressure side (8), (7) are transformed into corresponding electric signal by shut-off valve (4) separately, the high and low pressure chamber that (3) connect differential pressure transmitter (6) with differential pressure value.Be connected across the shut-off valve (5) between two pipes in high and low pressure chamber, open the gap bridge valve of closing during density measurement when being transmitter (6) zeroing.Air supply pipe (1) is connected compressed air source.This air blowing type differential density instrument requires fluid to be measured (10) non-structure power; Level change can not be lower than sensor low-pressure side (7); Fluid to be measured (10) can not produce sediment, and the sensor high-pressure side can not imbedded in the sediment.
In the drilling engineering, mud has stronger structural capacity; Fluctuating range is big up and down for the mud tank level; Pot bottom has the silt particle precipitation, and these three factors can make fixedly air blowing type differential density instrument cisco unity malfunction, so can not directly quote.
The purpose of this utility model is to solve the fixedly problem of air blowing type differential density instrument cisco unity malfunction in wellbore mud density is measured: sensor is installed on the floating installation, make it follow all the time that tested mud liquid level is upper and lower to float, make sensor can both be in normal operation position at any time, can the continuous coverage wellbore mud density.To replace the conventional practice of domestic situ of drilling well hand dipping mud density.
Technical characterictic of the present utility model is:
To be installed on the floating installation (20) by the air blowing type differential density sensor that base plate (19), high-pressure side (22), low-pressure side (21) are formed, floating installation (20) is contained on the guide frame; Guide frame by entablature (18), guide pole (23), sill (24) are formed is fixedly mounted in the container (28).
When the upper and lower variation of fluid to be measured liquid level, sensor floats with floating installation (20) is upper and lower, and sensor low-pressure side (21) can not exposed liquid level; Pan position under guide frame sill (24) limiting sensor in addition, sensor high-pressure side (22) can not imbedded in the sediment (27).The air blowing type differential density instrument that floats can be used in the drilling engineering mud tank of fixing air blowing type differential density instrument cisco unity malfunction, and accurately, the continuous measurement of connection mud density, instrument indication value can be as accurate as 0.01 gram per centimeter
3
The explanation of the utility model accompanying drawing 2:
Outer source of the gas air supply pipe (11) is to two decompressions, constant current blowning installation (12) air feed, blowning installation (12) is connected high-pressure side (22), the low-pressure side (21) of sensor respectively through two flexible rubber hoses (13), they are blown in fluid to be measured (25) respectively, each self-forming air blowing pressure drop, the high and low pressure chamber of differential pressure transmitter (17) is connected in the high and low pressure side (22) of sensor, (21) through each self-corresponding sebific duct and valve (15), (14), the differential pressure of gas is transformed into corresponding electric signal, and the display density value.The sensor of being made up of base plate (19), low-pressure side (21), high-pressure side (22) is installed on the floating installation (20); Guide frame is made up of guide pole (23), sill (24), entablature (18); Floating installation (20) is sleeved on the guide pole (23), and guide frame is lifted on the top cover of mud tank (28).Fluid to be measured (25) flows into from inlet (29), flows out from outlet (26).The sediment of fluid to be measured (27) should not be higher than the sill (24) of guide frame.
Embodiment:
Accompanying drawing 2 is an embodiment of the present utility model.Base plate (19) is made by steel plate; Low-pressure side (21) is that a length is 140 millimeters steel pipe; High-pressure side (22) is that a length is 340 millimeters steel pipe.Floating installation (20) is that 140 millimeters of internal diameters, external diameter are that 500 millimeters, height are 130 millimeters.It is the hollow float that the iron plate by 2 millimeters thick is welded into.Guide pole (23) is the steel pipe of 37.5 millimeters of diameters; Sill (24) is made with channel-section steel.Decompression, constant current blowning installation (12) are two homemade CQ-2 type blowning installations, and used source of the gas is a 0.4-0.8MPa pressurized air; Valve (14), (15), (16) are that three instrument are with needle valve or join the three valve groups that differential pressure gauge is used.Differential pressure transmitter (17) is the 0-600 millimeter of water, is output as the differential pressure transmitter of 0-10 milliampere for the DBC-300A type of the DDZ-II series of domestic production, range.Concrete working method: gas is connected sensor high-pressure side (22), low-pressure side (21) respectively through two blowning installations (12), in fluid to be measured (25), blow, and to self-forming air blowing pressure drop, the high and low pressure chamber of differential pressure transmitter (17) is connected high and low pressure side (22), (21) of sensor respectively by sebific duct, valve (15), (14) separately, and the gas differential pressure is transformed into the electric signal of correspondence.When being the differential pressure transmitter zeroing, the valve of cross-over connection both sides (16) opens the gap bridge valve of closing during measurement.
Claims (1)
1, a kind of air blowing type differential density instrument, formed by outer air supply pipe (11), decompression constant current blowning installation (12), sebific duct (13), valve (14), (15), (16), differential pressure transmitter (17) and base plate (19), high-pressure side (22), low-pressure side (21), it is characterized in that: the air blowing type differential density sensor of being made up of base plate (19), high-pressure side (22), low-pressure side (21) is installed on the floating installation (20), and floating installation (20) is contained on the guide frame; Guide frame by entablature (18), guide pole (23), sill (24) are formed is fixed in the mud container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209136 CN2036667U (en) | 1988-08-05 | 1988-08-05 | Floating air-blown type differential densimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209136 CN2036667U (en) | 1988-08-05 | 1988-08-05 | Floating air-blown type differential densimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2036667U true CN2036667U (en) | 1989-04-26 |
Family
ID=4842831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88209136 Withdrawn CN2036667U (en) | 1988-08-05 | 1988-08-05 | Floating air-blown type differential densimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2036667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868823A (en) * | 2014-03-13 | 2014-06-18 | 昆明理工大学 | Device and method for detecting underflow concentration pressure difference of inclined plate thickener |
| CN104297101A (en) * | 2014-09-26 | 2015-01-21 | 承德石油高等专科学校 | Mud density measurement instrument for well drilling and preparation method thereof |
| CN105203429A (en) * | 2014-06-25 | 2015-12-30 | 天津海科信达石油技术有限公司 | Slurry density sensor |
-
1988
- 1988-08-05 CN CN 88209136 patent/CN2036667U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868823A (en) * | 2014-03-13 | 2014-06-18 | 昆明理工大学 | Device and method for detecting underflow concentration pressure difference of inclined plate thickener |
| CN105203429A (en) * | 2014-06-25 | 2015-12-30 | 天津海科信达石油技术有限公司 | Slurry density sensor |
| CN104297101A (en) * | 2014-09-26 | 2015-01-21 | 承德石油高等专科学校 | Mud density measurement instrument for well drilling and preparation method thereof |
| CN104297101B (en) * | 2014-09-26 | 2017-01-25 | 承德石油高等专科学校 | Mud density measurement instrument for well drilling and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |