CN103267546A - Differential-pressure momentum flow sensor - Google Patents
Differential-pressure momentum flow sensor Download PDFInfo
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- CN103267546A CN103267546A CN201310151213XA CN201310151213A CN103267546A CN 103267546 A CN103267546 A CN 103267546A CN 201310151213X A CN201310151213X A CN 201310151213XA CN 201310151213 A CN201310151213 A CN 201310151213A CN 103267546 A CN103267546 A CN 103267546A
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- differential pressure
- flow
- orifice plate
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Abstract
The invention relates to a measurement device for fluid flow in a pipe, in particular to a differential-pressure momentum flow sensor. The differential-pressure momentum flow sensor is characterized by comprising an orifice plate. The middle of the orifice plate is provided with an opening at 45 degrees, and a spout baffle is disposed at the opening. A 45-degree open concentric angle of the spout baffle matches with the opening of the orifice plate. A pressure support is further arranged on the pipe. A pressure sensor is disposed at the axial center of the pressure support and is connected with a guide sleeve. A slide guide is connected to the spout baffle and matches with the guide sleeve. A mechanical elastic damper is disposed in the slide guide and the guide sleeve. Two sides of the orifice plate are provided with a positive differential pressure guide port and a negative differential pressure guide port respectively, and both the positive differential pressure guide port and the negative differential pressure guide port are connected with a differential pressure transmitter. The differential-pressure momentum flow sensor further comprises a flow computer, and the flow computer is connected with each of a pressure sensor positive pressure point, a pressure sensor negative pressure point, and the differential pressure transmitter. The differential-pressure momentum flow sensor is simple in structure, low in mounting requirement, wide in measurement range and excellent in low-speed measurement performance.
Description
Technical field
The present invention relates to a kind of measurement mechanism of pipeline inner fluid flow, specifically is a kind of differential pressure flow of momentum quantity sensor.
Background technology
At present, differential pressure flowmeter is the most successful the most a kind of flow measurement mode that active procedure control and flow metering aspect are used.Differential pressure type flow meter all is based on Bernoulli's theorem, such as flow nozzle, venturi and orifice plate, all is to dam around the tube wall, and the fluid center pit flows through.There is the efflux coefficient instability in the tradition differential pressure flowmeter all the time, and linear poor, repeatability is not high, and accuracy is not high, the easily easy fouling of contamination, and range ratio is little, problems such as on-the-spot installation requirement height.Particularly at low fluid-velocity survey weak effect, general differential pressure flowmeter can only be exerted oneself the process observation requirement for the place of high flow rate.
Summary of the invention
The invention provides a kind of differential pressure flow of momentum quantity sensor, solve the high shortcoming of measurement lower limit of traditional differential pressure meter, it has simple in structure, and installation requirement is low, and applicability is wide, broad quantum, characteristics such as low fluid-velocity survey excellent performance.
The concrete technical scheme that adopts of the present invention is:
A kind of differential pressure flow of momentum quantity sensor is characterized in that, comprises the orifice plate that is fixed on the pipeline, and the orifice plate middle part is the 45 opening, and opening part is provided with the spout baffle plate, and the concentric angle of spout baffle plate is 45 ° and opens with the orifice plate opening identical; Also be provided with pressure arm on the pipeline, the pressure arm AnchorPoint is provided with pressure transducer, and pressure transducer is connected with the guide rail overcoat, the spout baffle plate is connected with rail plate, rail plate cooperates with the guide rail overcoat, in rail plate and cover rail overcoat, the mechanical elastic damper is installed; Be respectively equipped with the positive impulse mouth of differential pressure, the negative impulse mouth of differential pressure in the orifice plate both sides, be connected with differential pressure transmitter respectively; Also be provided with flow computer, pressure transducer pressure is connected with flow computer respectively with the negative point of pressure on schedule, and differential pressure transmitter is connected with flow computer.
Wherein, be coaxially installed with pressure relief device and pressure multipier at the pressure transducer front end.The mechanical elastic damper can be subjected to doing whole seesawing under the situation of external force, and by pressure relief device, pressure multipier, the stressed of spout baffle plate is delivered on the pressure transducer, mechanical signal is converted to electric signal sends into flow computer and handle.
Wherein, the spout baffle plate is provided with the chromium oxide metal deposition layer, improves wearing quality, the opposing wind erosion.
Wherein, the outside surface of pressure arm and cover rail overcoat is provided with the Teflon sprayed coating, guarantees the non-stick of material, avoids medium to stain on body structure surface.
Wherein, described orifice plate is to adopt securing member to be fixed on the pipeline.
Pressure on schedule, the negative point of pressure, pressure transducer be the pressure sensing part, transmits the electric signal of pressure.
Described differential pressure part is made of the negative impulse mouth of differential pressure, the positive impulse mouth of differential pressure, differential pressure transmitter, measures and transmits the differential pressure electric signal and give flow computer.
The present invention carries out flow measurement by the differential pressure momentum principle, with existing simple differential flow technology, the present invention is simple in structure, installation requirement is low, and applicability is wide, broad quantum, characteristics such as low fluid-velocity survey excellent performance, be a kind of desirable flowmeter, be applicable to and in the pipeline that is installed on various different tube diameters various media carried out fluid measurement.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is pressure sensor part structure for amplifying synoptic diagram;
Fig. 3 is the relativity figure of flow signal and flow volume, and wherein, curve 1 is differential pressure signal and the volumetric flow rate relation curve of prior-art devices, and curve 2 is composite signal of the present invention and volumetric flow rate relation curve.
Embodiment
As shown in Figure 1, 2, a kind of differential pressure flow of momentum quantity sensor, orifice plate 2 adopts securing member 1 to be fixed on the pipeline, and orifice plate 2 middle parts are the 45 opening, and opening part is provided with spout baffle plate 10, and the concentric angle of spout baffle plate 10 is 45 ° and opens with orifice plate 2 openings identical; Also be provided with pressure arm 5 on the pipeline, pressure arm 5 AnchorPoints are provided with pressure transducer 7, and pressure transducer 7 is connected with guide rail overcoat 6, spout baffle plate 2 is connected with rail plate 8, rail plate 8 cooperates with guide rail overcoat 6, in rail plate 8 and cover rail overcoat 6, mechanical elastic damper 9 is installed; Be respectively equipped with the positive impulse mouth 12 of differential pressure, the negative impulse mouth 11 of differential pressure in orifice plate 2 both sides, be connected with differential pressure transmitter 13 respectively; Also be provided with flow computer 14, pressure transducer 7 pressure 3 are connected with flow computer 14 respectively with the negative point 4 of pressure on schedule, and differential pressure transmitter 13 is connected with flow computer 14.Be coaxially installed with pressure relief device (not identifying among the figure) and pressure multipier 15 at pressure transducer 7 front ends.
When the present invention used, fluid was subjected to resistance in orifice plate, after fluid is pushed the spout baffle plate open, and the eject slot between spout baffle plate and orifice plate opening and going out, pressure differential before and after forming, the pressure extent meets Bernoulli's theorem; Fluid acts on the acting force at spout baffle plate place, and through mechanical elastic damper, pressure relief device, after pressure multipier was delivered to pressure transducer, fluid converted electric signal to and sends into the flow computer processing.Rate of flow of fluid changes, and can cause the spout baffle plate to move forward and backward, and rate of flow of fluid, hydrodynamic pressure, fluid density, the detected pressure of instrument become ternary correction function relation, curve map as shown in Figure 3, in critical point with the matched curve of lower part close near linear.
Claims (3)
1. a differential pressure flow of momentum quantity sensor is characterized in that, comprises the orifice plate that is fixed on the pipeline, and the orifice plate middle part is the 45 opening, and opening part is provided with the spout baffle plate, and the concentric angle of spout baffle plate is 45 ° and opens with the orifice plate opening identical; Also be provided with pressure arm on the pipeline, the pressure arm AnchorPoint is provided with pressure transducer, and pressure transducer is connected with the guide rail overcoat, the spout baffle plate is connected with rail plate, rail plate cooperates with the guide rail overcoat, in rail plate and cover rail overcoat, the mechanical elastic damper is installed; Be respectively equipped with the positive impulse mouth of differential pressure, the negative impulse mouth of differential pressure in the orifice plate both sides, be connected with differential pressure transmitter respectively; Also be provided with flow computer, pressure transducer pressure is connected with flow computer respectively with the negative point of pressure on schedule, and differential pressure transmitter is connected with flow computer.
2. differential pressure flow of momentum quantity sensor according to claim 1 is characterized in that, is coaxially installed with pressure relief device and pressure multipier at the pressure transducer front end.
3. differential pressure flow of momentum quantity sensor according to claim 1 is characterized in that the spout baffle plate is provided with the chromium oxide metal deposition layer; The outside surface of pressure arm and cover rail overcoat is provided with the Teflon sprayed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151213XA CN103267546A (en) | 2013-04-27 | 2013-04-27 | Differential-pressure momentum flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151213XA CN103267546A (en) | 2013-04-27 | 2013-04-27 | Differential-pressure momentum flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103267546A true CN103267546A (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310151213XA Pending CN103267546A (en) | 2013-04-27 | 2013-04-27 | Differential-pressure momentum flow sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282864A (en) * | 2018-08-19 | 2019-01-29 | 中国海洋石油总公司 | A kind of underground V cone gas flow testing device |
| CN111964831A (en) * | 2020-08-26 | 2020-11-20 | 王洪元 | Numerical control valve for detecting fluid hydraulic pressure |
| CN113624289A (en) * | 2021-08-12 | 2021-11-09 | 宜兴市宏远电力设备有限公司 | Baffle differential pressure type fluid flow measuring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001054094A1 (en) * | 2000-01-18 | 2001-07-26 | Richard Young | Apparatus for water flow measurement |
| CN2690852Y (en) * | 2004-04-03 | 2005-04-06 | 肖景贵 | Linear target flow meter |
| CN1701216A (en) * | 2002-09-19 | 2005-11-23 | 萨塞克斯大学 | Detection and measurement of two-phase flow |
| CN102346055A (en) * | 2010-08-03 | 2012-02-08 | 深圳市泉源仪表设备制造有限公司 | Differential pressure and displacement double-parameter measurement variable-area target type flowmeter |
| CN203259197U (en) * | 2013-04-27 | 2013-10-30 | 山东迪泽仪表科技有限公司 | Differential pressure momentum flow sensor |
-
2013
- 2013-04-27 CN CN201310151213XA patent/CN103267546A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001054094A1 (en) * | 2000-01-18 | 2001-07-26 | Richard Young | Apparatus for water flow measurement |
| CN1701216A (en) * | 2002-09-19 | 2005-11-23 | 萨塞克斯大学 | Detection and measurement of two-phase flow |
| CN2690852Y (en) * | 2004-04-03 | 2005-04-06 | 肖景贵 | Linear target flow meter |
| CN102346055A (en) * | 2010-08-03 | 2012-02-08 | 深圳市泉源仪表设备制造有限公司 | Differential pressure and displacement double-parameter measurement variable-area target type flowmeter |
| CN203259197U (en) * | 2013-04-27 | 2013-10-30 | 山东迪泽仪表科技有限公司 | Differential pressure momentum flow sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282864A (en) * | 2018-08-19 | 2019-01-29 | 中国海洋石油总公司 | A kind of underground V cone gas flow testing device |
| CN109282864B (en) * | 2018-08-19 | 2020-03-20 | 中国海洋石油总公司 | Downhole V-cone gas flow testing device |
| CN111964831A (en) * | 2020-08-26 | 2020-11-20 | 王洪元 | Numerical control valve for detecting fluid hydraulic pressure |
| CN113624289A (en) * | 2021-08-12 | 2021-11-09 | 宜兴市宏远电力设备有限公司 | Baffle differential pressure type fluid flow measuring device |
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Application publication date: 20130828 |
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| RJ01 | Rejection of invention patent application after publication |