CN202710595U - Plug-in type gas flow velocity measuring device - Google Patents
Plug-in type gas flow velocity measuring device Download PDFInfo
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- CN202710595U CN202710595U CN 201220403750 CN201220403750U CN202710595U CN 202710595 U CN202710595 U CN 202710595U CN 201220403750 CN201220403750 CN 201220403750 CN 201220403750 U CN201220403750 U CN 201220403750U CN 202710595 U CN202710595 U CN 202710595U
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Abstract
The utility model discloses a plug-in type gas flow velocity measuring device which includes an upwind pipe and a downwind pipe which extend in parallel and a blowing and washing guide pipe which is communicated with the upwind pipe and the downwind pipe. One end of the upwind pipe far away from the blowing and washing pipe is an inserting end, and one end of the downwind pipe far away from the blowing and washing pipe is also an inserting end. The inserting ends of the upwind pipe and the downwind pipe are provided with pressure mouths facing to opposite directions. The inside of the upwind pipe is connected with a first jet flow sensor which can measure the gas flow in the upwind pipe, and the inside of the downwind pipe is connected with a second jet flow sensor which can measure the gas flow in the downwind pipe. In use, through blowing the clean gas into the upwind pipe and the downwind pipe, the real-time dedusting is realized, and the dust in a to-be-measured gas pipeline can not block the pressure mouths of the upwind pipe and the downwind pipe, at the same time, the flow value of the clean gas in the upwind pipe and the downwind pipe is determined by the gas flow velocity in the measured pipeline, so the clean gas blew by the blowing and washing guide pipe can be used as the measurement medium.
Description
Technical field
The utility model belongs to the fluid-velocity survey technical field, is specifically related to a kind of plug-in type device for measuring flow speed of gas.
Background technology
Existing plug-in type measurement mechanism is when measuring serious pollution or containing the gas of a large amount of dust, and when gas entered in the measuring system, the dust that contains in the gas to be measured was easy to pollute the thief hole of shutoff measurement mechanism, and then affected the measuring accuracy of measurement mechanism.Be to guarantee the normal measurement of measurement mechanism, need often measurement mechanism is disassembled from fluid line to be measured so that cleans thief hole, but this cleaning way need to just can carry out the work efficiency of reduction measurement mechanism after stopping to measure.In present measuring technique, some design of measuring system has the batch (-type) back-blowing device, namely measurement mechanism is carried out regularly or irregularly purging and prevent that thief hole from stopping up, need to stop the instrument operation during in blowback at this intermission type artificial blowback cleaning device, then can cause measuring and interrupt, impact is normally measured.
The utility model content
The purpose of this utility model is to provide a kind of plug-in type device for measuring flow speed of gas, all can cause measuring with Manual-cleaning or clearance-type purge in the solution prior art and interrupt and the technical matters of reduction measurement mechanism work efficiency.
For achieving the above object, plug-in type device for measuring flow speed of gas provided by the utility model adopts following technical scheme: a kind of plug-in type device for measuring flow speed of gas, comprise the parallel pipe that facings the wind that extends, leeward pipe and the purge conduit that is communicated with the pipe that facings the wind, leeward pipe, end away from the purge conduit of pipe and leeward pipe is insertion end down with the wind, the insertion end of pipe and leeward pipe of facining the wind offers towards opposing pressure port, is being respectively equipped with for measuring to manage down with the wind and first, second jet flow sensor of leeward pipe gas flow in facing the wind pipe and leeward pipe.
Be equipped with on the described purge conduit for the flowrate control valve of control to the clean air flow of pipe and the leeward pipe input of facining the wind.
Described purge conduit is connected with facing the wind pipe and leeward pipe by three-port structure, and the air intake opening of three-port structure is connected with the purge conduit, two gas outlet is connected with facing the wind pipe and leeward pipe respectively.
All have for guiding on the insertion end of described facing the wind pipe and leeward pipe and flow to the segmental arc of pressure port from purging gas stream of purge conduit input.
Described measurement mechanism also comprises air pump or the source of the gas that is connected with the purge conduit.
The beneficial effects of the utility model are: when plug-in type device for measuring flow speed of gas provided by the utility model uses, parallel down with the wind pipe and the leeward pipe of arranging inserted in the gas pipeline to be measured, and assurance is managed down with the wind and leeward pipe is arranged successively along the gas flow in the gas pipeline to be measured, then be blown into the cleaning purge gas of homology in facing the wind pipe and the leeward pipe through the purge conduit, when the gas flow rate in the gas pipeline to be measured was zero, the pipe that facings the wind was identical with two measured gas flows of jet flow sensor in the leeward pipe.When the gas in the gas pipeline to be measured has certain flow rate, at this moment, the flow of purge gas can reduce in the pipe down with the wind, and the flow of the purge gas in the leeward pipe can increase, the measured gas flow of jet flow sensor that facings the wind in pipe and the leeward pipe will change, and can obtain gas flow rate in the gas pipeline to be measured according to the gas flow of the measured variation of two jet flow sensors.Preventing by sweeping up dust of being blown in facing the wind pipe and leeward pipe that clean air can be real-time that dust shutoff in the gas pipeline to be measured from facining the wind in the measurement mechanism in the utility model manages and the pressure port of leeward pipe, simultaneously, the flow value of the clean air in pipe and the leeward pipe determines that by the gas flow rate in the tested pipeline clean air that is blown into through the purge conduit so also serves as the measurement medium down with the wind.Measurement mechanism provided by the utility model can sweep up dust in measuring process immediately, improves the work efficiency of measurement mechanism, has improved measuring accuracy, prolongs the serviceable life of measurement mechanism.
Description of drawings
Fig. 1 is the structural representation (arrow is depicted as gas flow in the gas pipeline to be measured when using among the figure) of a kind of embodiment of plug-in type device for measuring flow speed of gas provided by the utility model.
Embodiment
As shown in Figure 1, a kind of embodiment of plug-in type device for measuring flow speed of gas, measurement mechanism among this embodiment inserts when comprising parallel use of extending manages 2 and leeward pipe 3 in the gas pipeline 1 to be measured down with the wind, manage down with the wind 2 and an end of leeward pipe 3 for being used for inserting the insertion end of gas pipeline to be measured, manage down with the wind 2 insertion end and offer pressure port 21, the insertion end of leeward pipe 3 has pressure port 31, pressure port 21 herein and pressure port 31 be towards opposing, and all have on the insertion end of pipe and leeward pipe of facining the wind for guiding and flow to the segmental arc of pressure port from purging gas stream of inputting of purge conduit.Pipe and leeward pipe are connected with for the purge conduit 6 to the continuous input homology clean air of pipe and leeward pipe that facings the wind by three-port structure down with the wind, this purge conduit 6 is connected with the air intake opening of three-port structure, and the pipe that facings the wind is connected with the gas outlet of three-port structure 8 respectively with leeward pipe.Manage down with the wind 2 and leeward pipe 3 in be respectively equipped with the first jet flow sensor 4 and the second jet flow sensor 5 for measure to facing the wind pipe and leeward pipe gas flow, the flowrate control valve 7 of the clean air flow of inputting to facing the wind pipe and leeward pipe for control is installed at purge conduit 6.
Above-mentioned measurement mechanism in use, with parallel arrange manage down with the wind 2 and leeward pipe 3 insert in the gas pipeline 1 to be measured, and guarantee to manage down with the wind 2 and leeward pipe 3 arrange successively along the gas flow in the gas pipeline to be measured, then through purge conduit 6 to manage down with the wind 2 and leeward pipe 3 in be blown into the clean air of homology, when the gas flow rate in the gas pipeline 1 to be measured is zero, manage down with the wind 2 with leeward pipe 3 in two jet flow sensors 4 be identical with 5 measured gas flows, when the gas in the gas pipeline to be measured has certain flow rate, at this moment, the flow of managing down with the wind purge gas in 2 can reduce, and the flow of the purge gas in the leeward pipe 3 can increase, manage down with the wind 2 and leeward pipe 3 in the measured gas flow of jet flow sensor will change, can obtain gas flow rate in the gas pipeline to be measured according to the gas flow of the measured variation of two jet flow sensors.
Adopt jet flow sensor at facing the wind pipe and leeward pipe in the measurement mechanism in above-described embodiment, be suitable for measuring the situation of low flow velocity, small pressure difference.
Measurement mechanism in above-described embodiment is fit to be applied in the negative-pressure pipeline, and cleaning pipe can directly be communicated with atmosphere, and at this moment, atmosphere is as clean air source.When being applied in the measurement mechanism in above-described embodiment in the malleation pipeline, need to dispose air pump or source of the gas at cleaning pipe, and in the place that does not allow entrained air, source of the gas also needs to use nitrogen.
Claims (5)
1. plug-in type device for measuring flow speed of gas, it is characterized in that: comprise the parallel pipe (2) that facings the wind that extends, leeward pipe (3) and the purge conduit (6) that is communicated with the pipe that facings the wind, leeward pipe, end away from the purge conduit of pipe and leeward pipe is insertion end down with the wind, the insertion end of pipe and leeward pipe of facining the wind offers towards opposing pressure port, is being respectively equipped with for measuring to manage down with the wind and first, second jet flow sensor of leeward pipe gas flow in facing the wind pipe and leeward pipe.
2. plug-in type device for measuring flow speed of gas according to claim 1 is characterized in that: be equipped with on the described purge conduit for the flowrate control valve (7) of control to the clean air flow of pipe and the leeward pipe input of facining the wind.
3. plug-in type device for measuring flow speed of gas according to claim 1 and 2, it is characterized in that: described purge conduit is connected with facing the wind pipe and leeward pipe by three-port structure (8), and the air intake opening of three-port structure is connected with the purge conduit, two gas outlets are connected with facing the wind pipe and leeward pipe respectively.
4. plug-in type device for measuring flow speed of gas according to claim 1 and 2 is characterized in that: all have on the insertion end of described facing the wind pipe and leeward pipe for guiding and flow to the segmental arc of pressure port from purging gas stream of inputting of purge conduit.
5. plug-in type device for measuring flow speed of gas according to claim 1 and 2, it is characterized in that: described measurement mechanism also comprises air pump or the source of the gas that is connected with the purge conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403750 CN202710595U (en) | 2012-08-15 | 2012-08-15 | Plug-in type gas flow velocity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403750 CN202710595U (en) | 2012-08-15 | 2012-08-15 | Plug-in type gas flow velocity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710595U true CN202710595U (en) | 2013-01-30 |
Family
ID=47590883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403750 Expired - Lifetime CN202710595U (en) | 2012-08-15 | 2012-08-15 | Plug-in type gas flow velocity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950130A (en) * | 2015-07-10 | 2015-09-30 | 山东省纺织科学研究院 | Flow speed testing instrument for medical catheter |
| CN105526979A (en) * | 2015-12-31 | 2016-04-27 | 郑州光力科技股份有限公司 | Gas drainage flow measurement device |
| CN106248153A (en) * | 2016-08-26 | 2016-12-21 | 江苏伟屹电子有限公司 | The automatic blowing control system of vortex-shedding meter |
-
2012
- 2012-08-15 CN CN 201220403750 patent/CN202710595U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950130A (en) * | 2015-07-10 | 2015-09-30 | 山东省纺织科学研究院 | Flow speed testing instrument for medical catheter |
| CN104950130B (en) * | 2015-07-10 | 2017-10-17 | 山东省纺织科学研究院 | Medical catheter flow meters |
| CN105526979A (en) * | 2015-12-31 | 2016-04-27 | 郑州光力科技股份有限公司 | Gas drainage flow measurement device |
| CN105526979B (en) * | 2015-12-31 | 2019-01-18 | 光力科技股份有限公司 | Gas drainage under suction flow measurement device |
| CN106248153A (en) * | 2016-08-26 | 2016-12-21 | 江苏伟屹电子有限公司 | The automatic blowing control system of vortex-shedding meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: GLTECH Co.,Ltd. Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: ZHEJIANG GUANGLI TECH DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |