CN2798052Y - Probe type flow sensor - Google Patents
Probe type flow sensor Download PDFInfo
- Publication number
- CN2798052Y CN2798052Y CN 200520091003 CN200520091003U CN2798052Y CN 2798052 Y CN2798052 Y CN 2798052Y CN 200520091003 CN200520091003 CN 200520091003 CN 200520091003 U CN200520091003 U CN 200520091003U CN 2798052 Y CN2798052 Y CN 2798052Y
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- pressure
- static pressure
- outlet
- pitot
- circular tube
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a probe type flow sensor which is provided with a circular tube body, wherein the lower end of the circular tube body is provided with a pressure difference measuring head which forms a circular tube shape, the axial line of a circular tube of the pressure difference measuring head is on the same straight line with that of the circular tube body, the side wall of the circular tube of the pressure difference measuring head is provided with a pitot pressure hole and a static pressure hole which are arranged at both sides of a side wall of the circular tube of the pressure difference measuring head, the upper end of the circular tube body is provided with a pitot pressure outlet and a static pressure outlet, a pitot pressure guide tube and a static pressure guide tube are arranged in the circular tube body, the lower end of each of the pitot pressure guide tube and the static pressure guide tube is respectively connected with the pitot pressure hole and the static pressure hole, and the upper end of each of the pitot pressure guide pipe and the static pressure guide pipe is respectively connected with the pitot pressure outlet and the static pressure outlet. When the utility model is used, the axial lines of the pitot pressure hole and the static pressure hole are put on the medial axial line of a fluid pipeline, the pitot pressure hole faces the coming direction of fluid, and the static pressure hole faces the going direction of the fluid; since the utility model is a straight tube, the precision of mounting position in installation is easy to ensure; since the axial line of the circular tube of the pressure difference measuring head of the utility model is on the same straight line with that of the circular tube body, the precision of form and position of products is easy to ensure during manufacture.
Description
Technical field
The utility model relates to a kind of probe-type flow sensor, particularly a kind of differential pressure measurement head of probe-type flow sensor.
Background technology
Pitot tube is a kind of flow sensor, can measure the stagnation pressure and the static pressure of fluid with Pitot tube, after measuring the stagnation pressure and static pressure of fluid, in conjunction with caliber, physical properties of fluids and parameters such as time, temperature, use differential pressure transmitter, flow integrator can be measured parameters such as flow rate of fluid, instantaneous delivery and integrated flow.Pitot tube and orifice-plate type flow sensor compare, characteristics such as measuring fluid flow with Pitot tube and have the precision height, range ability is big, reliability is high, the pressure loss is little and apparatus structure is simple.Pitot tube has the pipe body, there is tubular differential pressure measurement head the lower end of pipe body, the equal diameters of the diameter of pipe body and differential pressure measurement head pipe, the differential pressure measurement head have in use towards fluid come to pitot hole and in use towards the baroport of fluid side, pitot hole is in the outer end of differential pressure measurement head pipe, baroport is at the sidewall of differential pressure measurement head pipe, stagnation pressure conduit and static pressure conduit are arranged in the pipe body, there are stagnation pressure outlet and static pressure outlet in the upper end of pipe body, the lower end of stagnation pressure conduit and static pressure conduit links to each other with baroport with pitot hole respectively, and outlet links to each other with static pressure with the stagnation pressure outlet respectively in the upper end of stagnation pressure conduit and static pressure conduit.In the prior art, Pitot tube is a bend pipe, and the axis normal of the differential pressure measurement head pipe of bent-tube boiler Pitot tube is in the axis of pipe body.The axis of the tubular differential pressure measurement head of this Pitot tube flow sensor should be strictly perpendicular to the axis of pipe body, because the requirement height of the accuracy of form and position of product has certain degree of difficulty during fabrication; During use, on the duct wall of detected fluid, punch, the bent-tube boiler Pitot tube is inserted in the pipeline, the bent-tube boiler Pitot tube is fixed on the tube wall, allow the axis of tubular differential pressure measurement head exactly on the axis of fluid line, because Pitot tube is bent, the axis normal of tubular differential pressure measurement head is in the axis of pipe body, accurate for guaranteeing the installation site, certain degree of difficulty is also arranged when mounted.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, proposes a kind of a kind of probe-type flow sensor that all is relatively easy to when installing during fabrication.
The utility model is realized with the following method.
The probe-type flow sensor has the pipe body, there is tubular differential pressure measurement head the lower end of pipe body, the equal diameters of the diameter of pipe body and differential pressure measurement head pipe, the axis of differential pressure measurement head pipe and the axis of pipe body are on same straight line, the sidewall of differential pressure measurement head pipe has pitot hole and baroport, pitot hole and baroport are in the both sides of the sidewall of differential pressure measurement head pipe, the axis of pitot hole and baroport is on the same diameter of differential pressure measurement head pipe, there are stagnation pressure outlet and static pressure outlet in the upper end of pipe body, stagnation pressure conduit and static pressure conduit are arranged in the pipe body, the lower end of stagnation pressure conduit and static pressure conduit links to each other with baroport with pitot hole respectively, and outlet links to each other with static pressure with the stagnation pressure outlet respectively in the upper end of stagnation pressure conduit and static pressure conduit.
During use, on the duct wall of detected fluid, punch, the utility model is inserted in the pipeline, the probe-type flow sensor of straight tube is fixed on the tube wall, allow the axis of pitot hole and baroport on the axis of fluid line, pitot hole towards fluid come to, baroport moves towards towards fluid, because the utility model is a straight tube, is easy to when mounted guarantee that the installation site is accurate; Because the axis of differential pressure measurement head pipe of the present utility model and the axis of pipe body are easy to guarantee the accuracy of form and position of product during fabrication on same straight line.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is the cross-sectional schematic of probe-type flow sensor;
Fig. 2 is the synoptic diagram that is connected with the probe-type flow sensor of flow integrator;
Fig. 3 is the synoptic diagram that is connected with the probe-type flow rates sensor of flow integrator.
Embodiment
Among Fig. 1, the probe-type flow sensor has pipe body 1, there is tubular differential pressure measurement head 2 lower end of pipe body, the equal diameters of the diameter of pipe body and differential pressure measurement head pipe, the axis of differential pressure measurement head pipe and the axis of pipe body are on same straight line, the sidewall of differential pressure measurement head pipe has pitot hole 3 and baroport 4, pitot hole and baroport are in the both sides of the sidewall of differential pressure measurement head pipe, the axis of pitot hole and baroport is on the same diameter of differential pressure measurement head pipe, there are stagnation pressure outlet 5 and static pressure outlet 6 in the upper end of pipe body, stagnation pressure conduit 7 and static pressure conduit 8 are arranged in the pipe body, the static pressure conduit can be a pipe body itself, the lower end of stagnation pressure conduit and static pressure conduit links to each other with baroport with pitot hole respectively, and outlet links to each other with static pressure with the stagnation pressure outlet respectively in the upper end of stagnation pressure conduit and static pressure conduit.
Differential pressure transmitter in the prior art is at the pressure reduction between exportable stagnation pressure and the static pressure behind the stagnation pressure of fluid of input and the static pressure, flow integrator at the pressure reduction between input stagnation pressure and the static pressure, caliber, fluid flow state and time that fluid is flowed through or/and parameters such as exportable flow rate of fluid, instantaneous delivery and integrated flow after the temperature, pressure and other parameters.
Above-mentioned probe-type flow sensor can be connected with differential pressure transmitter and flow integrator becomes the probe-type flowmeter.The probe-type flowmeter can be used for measuring the flow of wind, cigarette, water, vapour, wet goods gaseous state or fluid liquid.
Among Fig. 2, the stagnation pressure of probe-type flow sensor outlet 11 and static pressure go out 12 and are connected with 13,14, stop valves of a stop valve respectively and are connected with equalizing valve 15, and equalizing valve is connected with differential pressure transmitter 16 and flow integrator 17 successively, forms the probe-type flowmeter.
Above-mentioned probe-type flowmeter is when measuring the flow of water vapor, because the temperature of water vapor is high than stagnation pressure outlet and static pressure outlet, water vapor be easy to by cool with fixed attention, the density of water vapor and temperature, pressure in close relations, and the density of water vapor is the parameter that greatly influences the water vapor flow, so be used to measure the probe-type flowmeter of water vapor devices such as cool condenser, the thermometer of measuring fluid, pressure unit will be arranged also.
Among Fig. 3, the stagnation pressure outlet 21 and the static pressure outlet 22 of probe-type flow sensor are connected with cool condenser 25,26 by a stop valve 23,24 respectively, cool condenser is connected with equalizing valve 27, differential pressure transmitter 28 and flow integrator 29 successively, flow integrator also is connected with thermometer 30 and pressure unit 31, the other end of pressure unit links to each other with the outlet of the cool condenser 24 that links to each other with the outlet of the static pressure of probe-type flow sensor, forms measurement water vapor probe-type flowmeter.
The flow integrator of above-mentioned probe-type flowmeter can show flow value, also exportable flow signal, and flow signal available computers or other display device show.
Claims (3)
1. probe-type flow sensor, the pipe body is arranged, there is tubular differential pressure measurement head the lower end of pipe body, the equal diameters of the diameter of pipe body and differential pressure measurement head pipe, there are stagnation pressure outlet and static pressure outlet in the upper end of pipe body, stagnation pressure conduit and static pressure conduit are arranged in the pipe body, the lower end of stagnation pressure conduit and static pressure conduit links to each other with baroport with pitot hole respectively, outlet links to each other with static pressure with the stagnation pressure outlet respectively in the upper end of stagnation pressure conduit and static pressure conduit, it is characterized in that: the axis of differential pressure measurement head pipe and the axis of pipe body are on same straight line, the sidewall of differential pressure measurement head pipe has pitot hole and baroport, pitot hole and baroport are in the both sides of the sidewall of differential pressure measurement head pipe, and the axis of pitot hole and baroport is on the same diameter of differential pressure measurement head pipe.
2. by the described probe-type flow sensor of claim 1, it is characterized in that: the stagnation pressure outlet and the static pressure outlet of described probe-type flow sensor are connected with stop valve respectively one time, one time stop valve is connected with equalizing valve, and equalizing valve is connected with differential pressure transmitter and flow integrator successively.
3. by the described probe-type flow sensor of claim 1, it is characterized in that: the stagnation pressure outlet and the static pressure outlet of described probe-type flow sensor are connected with cool condenser respectively by a stop valve, cool condenser is connected with equalizing valve, differential pressure transmitter and flow integrator successively, flow integrator also is connected with thermometer and pressure unit, and the other end of pressure unit is continuous with the outlet of the cool condenser that links to each other with the outlet of the static pressure of probe-type flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091003 CN2798052Y (en) | 2005-05-27 | 2005-05-27 | Probe type flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091003 CN2798052Y (en) | 2005-05-27 | 2005-05-27 | Probe type flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798052Y true CN2798052Y (en) | 2006-07-19 |
Family
ID=36869297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520091003 Expired - Fee Related CN2798052Y (en) | 2005-05-27 | 2005-05-27 | Probe type flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798052Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141447A (en) * | 2010-12-31 | 2011-08-03 | 中国航天科技集团公司第六研究院第十一研究所 | Total temperature/total pressure and static probe |
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
| CN108645459A (en) * | 2018-07-04 | 2018-10-12 | 东莞市益安人防工程有限公司 | A kind of apparatus for measuring air quantity |
| CN111220215A (en) * | 2020-03-11 | 2020-06-02 | 修武县宏源冷暖设备有限公司 | Special wind quantity and wind pressure measuring sheet for ventilation and air conditioner and manufacturing method thereof |
-
2005
- 2005-05-27 CN CN 200520091003 patent/CN2798052Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141447A (en) * | 2010-12-31 | 2011-08-03 | 中国航天科技集团公司第六研究院第十一研究所 | Total temperature/total pressure and static probe |
| CN102141447B (en) * | 2010-12-31 | 2012-07-25 | 中国航天科技集团公司第六研究院第十一研究所 | Total temperature/total pressure and static probe |
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
| CN108645459A (en) * | 2018-07-04 | 2018-10-12 | 东莞市益安人防工程有限公司 | A kind of apparatus for measuring air quantity |
| CN111220215A (en) * | 2020-03-11 | 2020-06-02 | 修武县宏源冷暖设备有限公司 | Special wind quantity and wind pressure measuring sheet for ventilation and air conditioner and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |