CN202836639U - Heat-type v-cone differential pressure flow duplex measurement device - Google Patents
Heat-type v-cone differential pressure flow duplex measurement device Download PDFInfo
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- CN202836639U CN202836639U CN 201220453707 CN201220453707U CN202836639U CN 202836639 U CN202836639 U CN 202836639U CN 201220453707 CN201220453707 CN 201220453707 CN 201220453707 U CN201220453707 U CN 201220453707U CN 202836639 U CN202836639 U CN 202836639U
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Abstract
The utility model relates to a heat-type v-cone differential pressure flow duplex measurement device which solves the defects that a v-cone flowmeter is insensitive to measure fluid flow close to the flow bottom limit and incapable of measuring gas flow with a large flow fluctuation range. More than one bypass bridge road is arranged outside a measurement pipe. Two ends of each bypass bridge road are communicated into the measurement pipe. The entry end of the bypass bridge road is connected with the upper position of a v-cone flow measurement unit. Measurement ranges of a heat-type measurement sensitive element and the v-cone flow measurement unit are redundant and overlapped with each other. Due to the fact that the heat-type measurement sensitive element and the v-cone flow measurement unit are combined, the heat-type v-cone differential pressure flow duplex measurement device is capable of having over-all properties of a mature v-cone differential pressure flow measurement technique, extending the minimum flow measurement to measurement of a measurable minute flow speed which can be measured by the heat-type gas flow measurement, and achieving a measuring range ratio of 1:1000.
Description
Technical field
The utility model relates to a kind of gas flow surveying instrument, especially a kind of hot type V cone differential flow duplex measurement device with bypass bridge path that possesses super-wide range and low-power consumption characteristic.
Background technology
In the existing gas flow measurement technology, there is the problem that low discharge can not Measurement accuracy in the differential pressure type measuring principle, and the positive displacement measuring principle exists movable member and large flow measurement that the problem of limitation is arranged.So, more employing differential pressure types of industrial gas flowmeter body or without the speed mode measuring method of movable member, the resident is with the more employing positive displacements of gas meter measuring method.
In recent years, propose to adopt the thermal type gas quality flow measurement technology, it has the Small flowrate measurement feature that approaches zero initiating, and measure output can Direct Digital, be easy to electronization.But the thermal type air flow measurement has technological difficulties: the impurity in the pipeline is for the impact of measuring sensor.Be embodied in: in the gas suspended particle and oily matter in time or the accumulation of event, it shows as absorption or sticks together the sensitive element surface, thereby affects the thermal effect such as its thermal convection, Distribution, causes measuring error.
Can find out, after hot type measurement sensitive element is polluted by running environment and gas medium, error appears in original measurement parameter of setting, it is our said data-bias, namely measuring system has departed from the measuring accuracy requirement, although other basic function is normal such as data processing functions such as demonstration communications.
In the differential pressure type flow measurement, the V cone flow meter has been installed malleation pressure-tapping nozzle, negative pressure taking pressure mouth at measuring tube, has been fixed with the V-type cone assembly coaxial with it in measuring tube, the V-type cone assembly comprises the bracing frame that is connected with the V-type cone, is sharp edge at the maximum gauge place of V-type cone.Draw mass rate by volumetric flow rate through computing.The V cone flow meter is the extension of orifice plate differential pressure flowmeter principle, throttle part adopts the V-type cone to replace orifice plate, it is more advanced a kind of flowmeter during differential flow is measured, have that large flow measurement precision is high, Application Range is wide, working stability, media general be not afraid of well gas suspension particle and greasy dirt molecule etc., has especially the strong excellent characteristics of anti-pipe vibration interference performance.
Patent Office of the People's Republic of China has announced a CN2821534Y patent on September 27th, 2006, name is called the V cone flow meter, comprise malleation pressure-tapping nozzle, negative pressure taking pressure mouth, measuring tube, in measuring tube, be fixed with the V-type cone assembly coaxial with it, the V-type cone assembly comprises the bracing frame that is connected with the V-type cone, be sharp edge at the maximum gauge place of V-type cone, angle a between the inner cone of V-type cone gets 45 ° ± 1 °, and the angle β between the rear cone gets 135 ° ± 1 °; The acute angle sharpness t of V-type cone is not less than 0.002dv, is not more than 0.003dv; The inner cone roughness of V-type cone and the identical R1 that is made as of dv size face of cylinder roughness, the R1 value changes with measuring tube inside diameter D N, and the rear cone roughness is made as R2, and the R2 value is than the little one-level of R1 value.But the V cone flow meter still reacts insensitive to the measurement of fluid flow near flux lower limit, can not satisfy the large gas flow measurement of flow mobility scale.
Therefore, the flowmeter of the little power consumption of a kind of wide-range just need to be arranged, possess simultaneously the advantage that V cone flow meter technology maturation and fully anti-pipe vibration disturb.Thereby fluid flow is carried out the accurate measurement method of gamut easily, simultaneously can adopt powered battery, and can adapt to the erecting stage and have pipe vibration to disturb, and the gas medium versatility is good again.So, such technology not only can significantly promote the differential pressure flowmeter performance, and the commerce that also can be used for better extensively existing is used and the fields such as industrial gas meter, particularly gas meter, has great society and economic benefit.
Summary of the invention
It is insensitive to the measurement of fluid flow reaction near flux lower limit that the utility model has solved existing V cone flow meter, can not satisfy the defective of the large gas flow measurement of flow mobility scale, a kind of hot type V cone differential flow duplex measurement device is provided, hot type measuring technique and differential pressure type vehicle technology are combined, can begin to measure from tiny flow quantity, and can effectively eliminate impurity effect, super-wide range is realized little power consumption.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of hot type V cone differential flow duplex measurement device, comprise measuring tube, the pressure transducer and the temperature sensor that are communicated with measuring tube inside are installed on the measuring tube, measuring tube inside is fixed with V cone flow meter group, the measuring tube outer setting has at least one bypass bridge path, the two ends of each bypass bridge path are communicated in the measuring tube, the inlet end of bypass bridge path is connected to the upstream of V cone flow meter group, the endpiece of bypass bridge path is connected to the downstream of V cone flow meter group, is connected with hot type on the bypass bridge path and measures sensitive element; The measurement range of hot type measurement sensitive element and V cone flow meter group is mutually redundant overlapping; Pressure transducer, temperature sensor, V cone flow meter group and hot type are measured sensitive element and are all linked to each other with data processing circuit.
V-arrangement cone fixing in the measuring tube forms the upstream and downstream pressure differential, and by the large flow velocity section of differential pressure principle measurement gas, this structure is the V cone differential pressure flowmeter measurement mechanism of standard, and the scope that can measure is for being about 5.0m/s-30.0m/s.At pressure transducer and the temperature sensor that measuring channel is installed, can carry out temperature pressure compensation and calculate, the operating mode flow of gas medium is converted to the measurement of normal flow.Tube wall at measuring channel arranges the bypass bridge path of measuring sensitive element with hot type, the measurement range that hot type measurement sensitive element can reach is 0.01m/s-10m/s, can measure tiny flow quantity like this, it is separate that V cone principle flow measurement passage and hot type are measured passage, exists separate and the mutual redundant overlapping region of measurement range to the measurement result of detected fluid rate-of flow.
At least one measures the bypass bridge path of small gas flow rate in the cross-over connection of the V of standard cone differential pressure flowmeter upstream and downstream, realized the common factor measurement of hot type measuring technique and differential pressure type measuring technique, simultaneously, many bypass bridge paths passage is distributed in pipeline, can better adapt to the accurate measurement of large diameter pipeline.Also just say: have gas flow out-of-date in pipeline, trunk line and bypass bridge path have the gas flow mistake simultaneously, the bore area of bypass bridge path only be trunk line 1/100～1/1000 between, measuring tube and bypass bridge path carry out flow measurement work synchronously; If gas flow rate is in low discharge when zone that the V cone flow meter is difficult to Measurement accuracy, differential pressure signal is too faint or do not produce the accurate stable signal, at this moment, can carry out Measurement accuracy to the gas flow of shunting by the hot type measuring technique of bypass bridge path; When air-flow in the measuring tube enter into can Measurement accuracy at the V cone flow meter flow region the time, the measurement of V cone principle and the hot type of bypass bridge path are measured and all can effectively be measured the gas flow of gas flow rate in the trunk line and shunting synchronously, measure passage for two and finished redundant measurement, improved the reliability of flow measurement.And, as long as having with the measurement range of V taper flow meter, the measurement range of hot type measuring technique occurs simultaneously, just realized adaptively correcting.
As preferably, V cone flow meter group comprises V-arrangement centrum and differential pressure pick-up, the V-arrangement centrum is fixed to the measuring tube inwall by bracing frame, the axis of V-arrangement centrum and the axis coaxle of measuring tube, cross-over connection has the bridge circuit that is communicated with measuring tube inside on the measuring tube, differential pressure pick-up is connected on the bridge circuit, and the inlet end of bridge circuit forms the malleation pressure-tapping nozzle in the upstream of V-arrangement centrum, and the endpiece of bridge circuit forms the negative pressure taking pressure mouth in the downstream of V-arrangement centrum.
As preferably, the front end of the entrance of bypass bridge path withstands on the inwall of measuring tube or is hung in the measuring tube, and the opening of the entrance of bypass bridge path is met to the direction in the source of gas and formed one and imports the angle; Inlet valve and outlet valve are installed on the bypass bridge path, and the hot type sensitive element is arranged between inlet valve and the outlet valve.Importing the angle makes things convenient for air-flow to enter from entrance; Under the state that V cone flow meter group can accurate stable be measured, by closing inlet valve and the outlet valve that hot type is measured the sensitive element both sides that be positioned at of installing on the bypass bridge path pipeline, just realized the online replacing that hot type is measured sensitive element school zero and carried out this pick-up unit; The inlet valve of bypass bridge path both sides and outlet valve can close or open, in the mode of selecting independent V cone flow meter group to measure or combine with the hot type measurement.
As preferably, bypass bridge path is two, and 180 ° at two bypass bridge path intervals are horizontally disposed with or vertically arrange; Perhaps described bypass bridge path is three, and 120 ° at three bypass bridge path intervals are symmetrical arranged; Perhaps described bypass bridge path is four, and 90 ° at four bypass bridge path intervals are symmetrical arranged.Many bypass bridge paths passage is distributed in pipeline, can better adapt to the accurate measurement of large diameter pipeline.In order to protect bypass bridge path, can be at measuring tube outer setting protective sleeve, in this protective sleeve all was coated on a plurality of bypass bridge paths, protective sleeve can be that the two halves fastening forms, and is convenient to install.
As preferably, the rear end of the entrance of bypass bridge path is cylinder chamber, and the size of cylinder chamber is greater than the sectional dimension of the porch of bypass bridge path, and described hot type is measured the rear end that sensitive element is arranged on cylinder chamber.The geomery of entrance is in order to control the split ratio of bypass bridge path, the cylinder chamber of entrance rear end, size is greater than the size of entrance, so that air-flow can play the effect of buffering after entering from entrance, the wave energy that airflow diversion produces discharges in cylinder chamber, and form stable air-flow and enter into the introducing passage, so that measuring the data that sensitive element detects, hot type more approaches actual parameter.
As preferably, it is thermal type mass flow sensor that hot type is measured sensitive element, the mass rate of its output signal and the fluid relevant output characteristic function of monodrome that is directly proportional, and its power consumption is in the 1-50 milliwatt.The power dissipation ratio of thermal type mass flow sensor is lower, realizes little measurement of power loss.
As preferably, be provided with blade or the filter screen of divided gas flow impurity in the cylinder chamber, the shared total area of blade or filter screen divided gas flow is 10:1-100:1 with the ratio of introducing channel cross-sectional area.Blade or filter screen mainly filter gas, prevent impurity with gas flow, bring larger error to measurement, and the active area of control blade or filter screen prevents from the flow velocity of gas is impacted.
As preferably, measuring tube external stability has housing, is fixed with gauge outfit by connecting link on the housing, and connecting link and gauge outfit are in the vertical position of measuring tube, and data processing circuit is in the gauge outfit.
As preferably, when measuring tube only arranged a bypass bridge path, this bypass bridge path was arranged in the housing; Bypass bridge path is two and when vertically arranging, the bypass bridge path that is in the top is arranged in the housing; Bypass bridge path is three, and one of them bypass bridge path is arranged in the housing.
As preferably, data processing circuit comprises Data Management Analysis circuit, bypass bridge path signal processing circuit, V cone differential pressure measurement circuit, the V cone differential pressure measurement temperature pressure compensation circuit that is connected by connection line, the bypass bridge path signal processing circuit connects hot type and measures sensitive element and signal recognition correcting circuit, the signal recognition correcting circuit links to each other with the Data Management Analysis circuit, pressure transducer is connected the temperature pressure compensation circuit with temperature sensor, differential pressure pick-up connects V cone differential pressure measurement circuit, and the Data Management Analysis circuit connects the measurement data display circuit; The signal recognition correcting circuit is controlled in each bypass bridge path hot type and is measured sensitive element and automatically measure at the low flow velocity section of gas, and automatically enters dormant state at gas at large flow velocity section.
The beneficial effects of the utility model are: hot type measurement sensitive element and V cone flow meter combine and not only possess the over-all properties of ripe V cone differential flow measuring technique, and the minimum flow measurement has been extended to heat type gas flow detect the small flow velocity that can measure, range ratio can be up to 1:1000.Simultaneously, the bypass bridge path of measuring the low discharge section is installed in outside the pipeline, has avoided the interior impurity of pipeline to the direct impact of the measuring sensor of sensitivity, thereby has improved whole reliability, and be convenient for changing hot type sensitive measurement element, whole measuring accuracy and stability are improved greatly.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is the utility model the second structural representation;
Fig. 3 is a kind of data processing circuit schematic diagram of the utility model;
Among the figure: 1, measuring tube, 2, pressure transducer, 3, temperature sensor, 4, V vertebra flowmeter group, 5, bypass bridge path, 6, hot type measures sensitive element, 7, housing, 8, gauge outfit, 9, connecting link, 41, V-arrangement centrum, 42, bracing frame, 43, differential pressure pick-up, 44, malleation pressure-tapping nozzle, 45, negative pressure taking pressure mouth, the 51, first bypass bridge path, the 52, second bypass bridge path.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: a kind of hot type V cone differential flow duplex measurement device (referring to accompanying drawing 1), comprise measuring tube 1, and the pressure transducer 2 and the temperature sensor 3 that are communicated with measuring tube inside are installed on the measuring tube, measuring tube inside is fixed with V cone flow meter group 4.Measuring tube external stability has housing 7, is fixed with gauge outfit 8 by connecting link 9 on the housing, and connecting link and gauge outfit are in the vertical position of measuring tube, is provided with the Data Management Analysis circuit in the gauge outfit.Pressure transducer and temperature sensor are in the housing.
The measuring tube outer setting has bridge circuit, V cone flow meter group comprises V-arrangement centrum 41 and differential pressure pick-up 43, the V-arrangement centrum is fixed to the measuring tube inwall by bracing frame 42, the axis of V-arrangement centrum and the axis coaxle of measuring tube, differential pressure pick-up is connected on the bridge circuit, the inlet end of bridge circuit forms malleation pressure-tapping nozzle 44 in the upstream of V-arrangement centrum, and the endpiece of bridge circuit forms negative pressure taking pressure mouth 45 in the downstream of V-arrangement centrum.
The measuring tube outer setting has a bypass bridge path 5, and this bypass bridge path is in the housing.The two ends of bypass bridge path are communicated in the measuring tube, and the inlet end of bypass bridge path is connected to the upstream of malleation pressure-tapping nozzle, and the endpiece of bypass bridge path is connected to the downstream of negative pressure taking pressure mouth.The front end of the entrance of bypass bridge path withstands on the inwall of measuring tube, and the opening of the entrance of bypass bridge path is met to the direction in the source of gas and formed one and imports the angle.Inlet valve and outlet valve are installed on the bypass bridge path, are provided with hot type sensitive element 6 between inlet valve and the outlet valve.It is thermal type mass flow sensor that hot type is measured sensitive element, the mass rate of its output signal and the fluid relevant output characteristic function of monodrome that is directly proportional, and its power consumption is in the 1-50 milliwatt.The rear end of the entrance of bypass bridge path is cylinder chamber, and the size of cylinder chamber is greater than the sectional dimension of the porch of bypass bridge path, and cylinder chamber is parallel with measuring tube.Be provided with the blade of divided gas flow impurity in the cylinder chamber, the shared total area of blade divided gas flow is 50:1 with the ratio of introducing channel cross-sectional area.
Data processing circuit (referring to accompanying drawing 3) comprises Data Management Analysis circuit, bypass bridge path signal processing circuit, V cone differential pressure measurement circuit, the V cone differential pressure measurement temperature pressure compensation circuit that is connected by connection line, the bypass bridge path signal processing circuit connects hot type and measures sensitive element and signal recognition correcting circuit, the signal recognition correcting circuit links to each other with the Data Management Analysis circuit, pressure transducer is connected the temperature pressure compensation circuit with temperature sensor, differential pressure pick-up connects V cone differential pressure measurement circuit, and the Data Management Analysis circuit connects the measurement data display circuit; The signal recognition correcting circuit is controlled in each bypass bridge path hot type and is measured sensitive element and automatically measure at the low flow velocity section of gas, and automatically enters dormant state at gas at large flow velocity section.The Data Management Analysis circuit is connected to the outlet port by data communication, and electric power management circuit carries out little power managed to the hot type sensitive element on the bypass bridge path.
Data processing circuit is divided into low discharge section, overlap section and large flow section to flow and fits accurately through micro-processor interface circuit, so that this flow apparatus can be measured the mass rate of the fluid from tiny flow quantity to the range upper limit, its adaptively correcting circuit control hot type is measured sensitive element and is automatically measured at the low flow velocity section of gas, and automatically enters dormant state at gas at large flow velocity section.Its accurate flow measurement result delivers to display circuit by the Data Management Analysis circuit and shows, and also can deliver to miscellaneous equipment through data communication by the Data Management Analysis circuit, realizes the function of remote data transmission.
Embodiment 2: a kind of hot type V cone differential flow duplex measurement device (referring to accompanying drawing 2), the measuring tube outer setting has two bypass bridge paths, is respectively the first bypass bridge path 51 and the second bypass bridge path 52.180 ° at the first bypass bridge path and the second bypass bridge path interval vertically are arranged symmetrically with, and wherein the first bypass bridge path is in the top, and the second bypass bridge path is in the below, and the first bypass bridge path is in the housing.All the other structures are with reference to embodiment 1.
Above-described embodiment is two kinds of preferred version of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (10)
1. a hot type V bores differential flow duplex measurement device, comprise measuring tube, the pressure transducer and the temperature sensor that are communicated with measuring tube inside are installed on the measuring tube, measuring tube inside is fixed with V cone flow meter group, it is characterized in that the measuring tube outer setting has at least one bypass bridge path, the two ends of each bypass bridge path are communicated in the measuring tube, the inlet end of bypass bridge path is connected to the upstream of V cone flow meter group, the endpiece of bypass bridge path is connected to the downstream of V cone flow meter group, is connected with hot type on the bypass bridge path and measures sensitive element; The measurement range of hot type measurement sensitive element and V cone flow meter group is mutually redundant overlapping; Pressure transducer, temperature sensor, V cone flow meter group and hot type are measured sensitive element and are all linked to each other with data processing circuit.
2. hot type V according to claim 1 bores differential flow duplex measurement device, it is characterized in that V cone flow meter group comprises V-arrangement centrum and differential pressure pick-up, the V-arrangement centrum is fixed to the measuring tube inwall by bracing frame, the axis of V-arrangement centrum and the axis coaxle of measuring tube, cross-over connection has the bridge circuit that is communicated with measuring tube inside on the measuring tube, differential pressure pick-up is connected on the bridge circuit, the inlet end of bridge circuit forms the malleation pressure-tapping nozzle in the upstream of V-arrangement centrum, and the endpiece of bridge circuit forms the negative pressure taking pressure mouth in the downstream of V-arrangement centrum.
3. hot type V according to claim 1 bores differential flow duplex measurement device, the front end that it is characterized in that the entrance of bypass bridge path withstands on the inwall of measuring tube or is hung in the measuring tube, and the opening of the entrance of bypass bridge path is met to the direction in the source of gas and formed one and imports the angle; Inlet valve and outlet valve are installed on the bypass bridge path, and the hot type sensitive element is arranged between inlet valve and the outlet valve.
4. hot type V according to claim 1 cone differential flow duplex measurement device is characterized in that described bypass bridge path is two, and 180 ° at two bypass bridge path intervals are horizontally disposed with or vertically arrange; Perhaps described bypass bridge path is three, and 120 ° at three bypass bridge path intervals are symmetrical arranged; Perhaps described bypass bridge path is four, and 90 ° at four bypass bridge path intervals are symmetrical arranged.
5. according to claim 1 and 2 or 3 or 4 described hot type V cone differential flow duplex measurement devices, the rear end that it is characterized in that the entrance of bypass bridge path is cylinder chamber, the size of cylinder chamber is greater than the sectional dimension of the porch of bypass bridge path, and described hot type is measured the rear end that sensitive element is arranged on cylinder chamber.
6. hot type V according to claim 5 bores differential flow duplex measurement device, it is characterized in that it is thermal type mass flow sensor that hot type is measured sensitive element, the mass rate of its output signal and the fluid relevant output characteristic function of monodrome that is directly proportional, its power consumption is in the 1-50 milliwatt.
7. hot type V according to claim 5 bores differential flow duplex measurement device, it is characterized in that being provided with in the cylinder chamber blade or the filter screen of divided gas flow impurity, the shared total area of blade or filter screen divided gas flow is 10:1-100:1 with the ratio of introducing channel cross-sectional area.
8. according to claim 1 and 2 or 3 or 4 described hot type V cone differential flow duplex measurement devices, it is characterized in that measuring tube external stability has housing, be fixed with gauge outfit by connecting link on the housing, connecting link and gauge outfit are in the vertical position of measuring tube, and data processing circuit is in the gauge outfit.
9. hot type V according to claim 8 bores differential flow duplex measurement device, and when it is characterized in that measuring tube only arranges a bypass bridge path, this bypass bridge path is arranged in the housing; Bypass bridge path is two and when vertically arranging, the bypass bridge path that is in the top is arranged in the housing; Bypass bridge path is three, and one of them bypass bridge path is arranged in the housing.
10. hot type V according to claim 1 bores differential flow duplex measurement device, it is characterized in that data processing circuit comprises the Data Management Analysis circuit that is connected by connection line, the bypass bridge path signal processing circuit, V cone differential pressure measurement circuit, V cone differential pressure measurement temperature pressure compensation circuit, the bypass bridge path signal processing circuit connects hot type and measures sensitive element and signal recognition correcting circuit, the signal recognition correcting circuit links to each other with the Data Management Analysis circuit, pressure transducer is connected the temperature pressure compensation circuit with temperature sensor, differential pressure pick-up connects V cone differential pressure measurement circuit, and the Data Management Analysis circuit connects the measurement data display circuit; The signal recognition correcting circuit is controlled in each bypass bridge path hot type and is measured sensitive element and automatically measure at the low flow velocity section of gas, and automatically enters dormant state at gas at large flow velocity section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453707 CN202836639U (en) | 2012-09-07 | 2012-09-07 | Heat-type v-cone differential pressure flow duplex measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453707 CN202836639U (en) | 2012-09-07 | 2012-09-07 | Heat-type v-cone differential pressure flow duplex measurement device |
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| CN202836639U true CN202836639U (en) | 2013-03-27 |
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| CN 201220453707 Expired - Fee Related CN202836639U (en) | 2012-09-07 | 2012-09-07 | Heat-type v-cone differential pressure flow duplex measurement device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215281A (en) * | 2014-08-28 | 2014-12-17 | 昆山超强光电设备有限公司 | Pressure differential meter |
| CN107655530A (en) * | 2017-02-22 | 2018-02-02 | 上海安钧电子科技有限公司 | Hot type V cone flow meters |
| CN109764921A (en) * | 2018-12-05 | 2019-05-17 | 西人马(西安)测控科技有限公司 | A kind of V cone natural gas in home method of calculating flux and device |
| CN117148877A (en) * | 2023-11-01 | 2023-12-01 | 苏芯物联技术(南京)有限公司 | High-precision pipeline flow measurement control device and design method |
-
2012
- 2012-09-07 CN CN 201220453707 patent/CN202836639U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215281A (en) * | 2014-08-28 | 2014-12-17 | 昆山超强光电设备有限公司 | Pressure differential meter |
| CN107655530A (en) * | 2017-02-22 | 2018-02-02 | 上海安钧电子科技有限公司 | Hot type V cone flow meters |
| CN109764921A (en) * | 2018-12-05 | 2019-05-17 | 西人马(西安)测控科技有限公司 | A kind of V cone natural gas in home method of calculating flux and device |
| CN117148877A (en) * | 2023-11-01 | 2023-12-01 | 苏芯物联技术(南京)有限公司 | High-precision pipeline flow measurement control device and design method |
| CN117148877B (en) * | 2023-11-01 | 2024-01-02 | 苏芯物联技术(南京)有限公司 | High-precision pipeline flow measurement control device and design method |
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