CN202256376U - Assembly of medium and low-speed wind tunnel contraction section and flow measuring section - Google Patents
Assembly of medium and low-speed wind tunnel contraction section and flow measuring section Download PDFInfo
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- CN202256376U CN202256376U CN2011204079334U CN201120407933U CN202256376U CN 202256376 U CN202256376 U CN 202256376U CN 2011204079334 U CN2011204079334 U CN 2011204079334U CN 201120407933 U CN201120407933 U CN 201120407933U CN 202256376 U CN202256376 U CN 202256376U
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Abstract
The utility model discloses an assembly of a medium and low-speed wind tunnel contraction section and a flow measuring section. The assembly comprises a contraction section I, a low-air-speed detection section, a contraction section II, a medium-air-speed detection section, a speed-area method detection section I and a square-to-circle transition section which are connected in sequence, wherein a micro differential pressure transducer I is arranged outside the speed-area method detection section I; a pitot tube which is connected with the micro differential pressure transducer I extends into the speed-area method detection section I through a fixing device with a measuring scale; the speed-area method detection section I is provided with a temperature sensor Ts; a pressure transducer is arranged outside the square-to-circle transition section; and the air inlet end of the pressure transducer is communicated with a pressure sampling port formed on the square-to-circle transition section. The assembly can be used for measuring air speed v and flow q; and the assembly can be used for detecting a wind meter and measuring gas flow. The conventional wind tunnel device can only be used for measuring wind speed, and the conventional speed-area method detection device can only be used for measuring flow. In the assembly, the functions of the wind tunnel device and the speed-area method detection device are realized comprehensively.
Description
Technical field
The utility model relate to a kind of detect with speed-area-method principle in the pick-up unit and the anemometer pick-up unit of heavy caliber (bore is from 80mm to 2000mm) gas meter, relate in particular to and a kind ofly realize wind speed and flow composite measurement field with wind-tunnel contraction section and flow measurement section assembly.
Background technology
Be used for detecting the wind tunnel device of anemometer at present, only design wind-tunnel contraction section and anemometer detection segment, be used to produce uniform gas flowfield and anemometer and detect, and do not have the normal flow survey sensor, can only fluid measured speed ν, not energy measurement flow q.
The utility model content
To the above-mentioned weak point that exists in the prior art; The utility model provides a kind of realization can fluid measured speed ν; Energy measurement flow q both can be used for anemometer and had detected again, also can be used for middle low-speed wind tunnel contraction section and flow measurement section assembly that gas flow detects.
Low-speed wind tunnel contraction section and flow measurement section assembly during the purpose of the utility model is achieved in that comprise that the contraction section one that connects successively, low wind speed detection segment, contraction section two, middle wind speed detection segment, speed-area-method detection segment I and side change the circle transition section; Said speed-area-method detection segment I is provided with the differential pressure transmitter I outward, and in the stationary installation speed of the putting in-area-method detection segment I of the Pitot tube that is connected with the differential pressure transmitter I with the band scale, speed-area-method detection segment I is provided with temperature sensor T
sThe side changes the circle transition section and is provided with pressure unit outward, and the inlet end of pressure unit changes the pressure tappings that is provided with on the circle transition section with the side and is communicated with.
As a kind of preferred version of the utility model, be respectively equipped with anemometer in said low wind speed detection segment and the middle wind speed detection segment.
Another kind of preferred version as the utility model; Also comprise contraction section three, high wind speed detection segment and the speed-area-method detection segment II that connects successively; Said contraction section three is connected with speed-area-method detection segment I, and said speed-area-method detection segment II is changeed the circle transition section with the side and is connected; Said speed-area-method detection segment II is provided with the differential pressure transmitter II outward, and in the stationary installation speed of the putting in-area-method detection segment II of the Pitot tube that is connected with the differential pressure transmitter II with the band scale, speed-area-method detection segment II is provided with temperature sensor T
s
As a kind of improvement project of the utility model, be provided with anemometer in the said high wind speed detection segment.
The beneficial effect of the utility model is: use when being somebody's turn to do middle low-speed wind tunnel contraction section and flow measurement section assembly, contraction section one and comb stream section are connected, commentaries on classics round transition section in general side's is connected with test pipe, both can survey wind speed ν, again measurable flow amount q; Both can be used for the detection of anemometer, can measure gas flow again.And traditional wind tunnel device can only measuring wind, and traditional speed-area-method pick-up unit can only be measured flow.This assembly has comprehensively been realized the two function.
Description of drawings
Fig. 1 is the structural representation of middle low-speed wind tunnel contraction section and flow measurement section assembly.
In the accompanying drawing: 1-contraction section one; 2-low wind speed detection segment; 3-contraction section two; 4-middle wind speed detection segment; 5-speed-area-method detection segment I; 6-side changes the circle transition section; 7-differential pressure transmitter I; 8-pressure unit; 9-anemometer; 10-anemometer carriage; 11-contraction section three; 12-high wind speed detection segment; 13-speed-area-method detection segment II; 14-differential pressure transmitter II.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done to describe in further detail.
As shown in Figure 1, middle low-speed wind tunnel contraction section and flow measurement section assembly comprise that the contraction section 1 that connects successively, low wind speed detection segment 2, contraction section 23, middle wind speed detection segment 4, speed-area-method detection segment I 5 and side change circle transition section 6.Speed-area-method detection segment I 5 outer differential pressure transmitter the I 7 that are provided with, in the stationary installation speed of the putting in-area-method detection segment I 5 of the Pitot tube that is connected with differential pressure transmitter I 7 with the band scale, speed-area-method detection segment I 5 is provided with temperature sensor T
sThe side changes the circle transition section 6 outer pressure units 8 that are provided with, and the inlet end of pressure unit 8 changes the pressure tappings that is provided with on the circle transition section 6 with the side and is communicated with.Be respectively equipped with anemometer 9 in low wind speed detection segment 2 and the middle wind speed detection segment 4, anemometer 9 is installed on the anemometer carriage 10.
In the present embodiment, middle low-speed wind tunnel contraction section and flow measurement section assembly are made up of wind speed detection segment 4, octagon speed-area-method detection segment I 5, octagon side's commentaries on classics circle transition section 6 and flange in octagon contraction section 1, octagon contraction section 23, the low wind speed detection segment 2 of octagon, the octagon.Its contraction section 1 is octagon and adopts the steel plate of Wei Xinsi base curves or two 3 curvilinear cut (4～6) mm to be welded with contraction section 23.The wind speed detection segment comprises low wind speed detection segment 2 and middle wind speed detection segment 4, is octagon, is designed with transparent windows and anemometer carriage 10, on the anemometer carriage in low wind speed detection segment 2 and the middle wind speed detection segment 4 anemometer 9 is installed all.The material of speed-area-method detection segment I is a stainless steel, is designed with transparent windows and Pitot tube displacement scale locating device.
Use should in low-speed wind tunnel contraction section during with flow measurement section assembly, the contraction section 1 and the outlet of comb stream section are joined with the octagon flange, commentaries on classics round transition section 6 in general side's links to each other with test pipe.Should in low-speed wind tunnel contraction section and flow measurement section assembly from contraction section 1, hang down wind speed detection segment 2, contraction section 23, wind speed detection segment 4 directly be welded as a whole, middle wind speed detection segment 4 links to each other with speed-area-method detection segment I 5 usefulness octagon flanges.
The basically uniform gas flowfield that contraction section 1 will be combed stream section generation is shrunk to uniform low speed flow field, and this low speed flow field forms gas flowfield uniform, middling speed through hanging down wind speed detection segment 2 through contraction section 23 further contractions and flow velocity lifting; Wind speed detection segment 4 and speed-area-method detection segment I 5 in this flow field warp by the output of standard Pitot tube and the differential pressure that flow velocity has functional relation that are installed in speed-area-method detection segment I 5, are measured gaseous tension P
s, temperature T
s, the flow velocity ν of the speed of calculating-area-method detection segment I 5 measures the circulation area s of standard Pitot tube place of gas flowfield process, can measure flow q.The area s of the anemometer cradle of wind speed detection segment 4 and low wind speed detection segment 2 in measuring
1, s
2, according to the continuity flow principles, low flow velocity ν in can calculating
1, ν
2
Certainly; Only need in the combinations thereof body, to add contraction section 3 11, high wind speed detection segment 12 and the speed-area-method detection segment II 13 that connects successively; Contraction section 3 11 is connected with speed-area-method detection segment I 13, and speed-area-method detection segment II 13 is changeed circle transition section 6 with the side and is connected.Outside speed-area-method detection segment II 13, be provided with differential pressure transmitter II 14; In the stationary installation speed of the putting in-area-method detection segment II 13 of the Pitot tube that is connected with differential pressure transmitter II 14 with the band scale, speed-area-method detection segment II 13 is provided with temperature sensor T
sBe provided with anemometer 9 in the high wind speed detection segment 12.With the temperature sensor T on speed-area-method detection segment II 13
sAnd the pressure reduction △ P of differential pressure transmitter II 14 detections of speed-area-method detection segment II 13 settings
sSignal is the input computing machine after A ∕ D conversion,
The gas flowfield of middling speed further shrinks behind contraction section 3 11 and flow velocity promotes uniform, the gas flowfield at a high speed of formation; This flow field is exported the differential pressure △ P that has functional relation with flow velocity through high wind speed detection segment 12 and speed-area-method detection segment II 13 by the Pitot tube that is installed in speed-area-method detection segment II 13
s, measure gaseous tension P
s, temperature T
s, the flow velocity ν of the speed of calculating-area-method detection segment II 13 measures the Pitot tube place circulation area s of gas flowfield through speed-area-method detection segment II 13, the speed of the measuring-area-method detection segment II 13 flow q of place
sMeasure the area s of the anemometer cradle of high wind speed detection segment 12
3,, can calculate high flow rate ν according to the continuity flow principles
3, realize of the detection of this device to the high speed anemometer.
In sum; Low-speed wind tunnel contraction section and flow measurement section assembly can be measured the flow velocity ν of high wind speed detection segment, middle wind speed detection segment and low wind speed detection segment in being somebody's turn to do; The flow q of the speed of flowing through-area-method detection segment I and the speed of flowing through-area-method detection segment II; Promptly can be used for the detection of anemometer, can measure gas flow again.And traditional wind tunnel device can only measuring wind, and traditional speed-area-method pick-up unit can only be measured flow.This assembly has comprehensively been realized the two function.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (4)
1. low-speed wind tunnel contraction section and flow measurement section assembly in one kind is characterized in that: comprise that the contraction section one (1) that connects successively, low wind speed detection segment (2), contraction section two (3), middle wind speed detection segment (4), speed-area-method detection segment I (5) and side change round transition section (6); The outer differential pressure transmitter I (7) that is provided with of said speed-area-method detection segment I (5); In the stationary installation speed of the putting in-area-method detection segment I (5) of the Pitot tube that is connected with differential pressure transmitter I (7) with the band scale, speed-area-method detection segment I (5) is provided with temperature sensor T
sThe square outer pressure unit (8) that is provided with of circle transition section (6) that changes, the inlet end of pressure unit (8) is gone up the pressure tappings that is provided with side's commentaries on classics circle transition section (6) and is communicated with.
2. low-speed wind tunnel contraction section and flow measurement section assembly is characterized in that: be respectively equipped with anemometer (9) in said low wind speed detection segment (2) and the middle wind speed detection segment (4) in according to claim 1.
3. low-speed wind tunnel contraction section and flow measurement section assembly in according to claim 2; It is characterized in that: also comprise contraction section three (11), high wind speed detection segment (12) and the speed-area-method detection segment II (13) that connects successively; Said contraction section three (11) is connected with speed-area-method detection segment I (5), and said speed-area-method detection segment II (13) is changeed circle transition section (6) with the side and is connected; The outer differential pressure transmitter II (14) that is provided with of said speed-area-method detection segment II (13); In the stationary installation speed of the putting in-area-method detection segment II (13) of the Pitot tube that is connected with differential pressure transmitter II (14) with the band scale, speed-area-method detection segment II (13) is provided with temperature sensor T
s
4. low-speed wind tunnel contraction section and flow measurement section assembly is characterized in that: be provided with anemometer (9) in the said high wind speed detection segment (12) in according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204079334U CN202256376U (en) | 2011-10-24 | 2011-10-24 | Assembly of medium and low-speed wind tunnel contraction section and flow measuring section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204079334U CN202256376U (en) | 2011-10-24 | 2011-10-24 | Assembly of medium and low-speed wind tunnel contraction section and flow measuring section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256376U true CN202256376U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204079334U Expired - Fee Related CN202256376U (en) | 2011-10-24 | 2011-10-24 | Assembly of medium and low-speed wind tunnel contraction section and flow measuring section |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149237A (en) * | 2013-02-18 | 2013-06-12 | 西安交通大学 | Wide-Reynolds-number-range plate-fin heat exchanger heat transfer and flow performance testing apparatus |
| CN103792391A (en) * | 2012-11-05 | 2014-05-14 | 河南理工大学 | Novel mining wind meter calibration device |
| CN103884487A (en) * | 2014-03-04 | 2014-06-25 | 同济大学 | Photovoltaic passage ventilation quantity testing device |
| CN106645775A (en) * | 2017-03-20 | 2017-05-10 | 西华大学 | Motor stator duct wind speed measurement device |
| CN107462743A (en) * | 2017-08-08 | 2017-12-12 | 北京卫星环境工程研究所 | Suitable for the wind speed calibration apparatus and scaling method under low pressure |
| CN109813935A (en) * | 2019-04-03 | 2019-05-28 | 昆山高新轨道交通智能装备有限公司 | A kind of portable airspeedometer verification system and its working method |
-
2011
- 2011-10-24 CN CN2011204079334U patent/CN202256376U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792391A (en) * | 2012-11-05 | 2014-05-14 | 河南理工大学 | Novel mining wind meter calibration device |
| CN103792391B (en) * | 2012-11-05 | 2017-02-22 | 河南理工大学 | Novel mining wind meter calibration device |
| CN103149237A (en) * | 2013-02-18 | 2013-06-12 | 西安交通大学 | Wide-Reynolds-number-range plate-fin heat exchanger heat transfer and flow performance testing apparatus |
| CN103884487A (en) * | 2014-03-04 | 2014-06-25 | 同济大学 | Photovoltaic passage ventilation quantity testing device |
| CN103884487B (en) * | 2014-03-04 | 2016-04-06 | 同济大学 | Photovoltaic passage wind quantity test device |
| CN106645775A (en) * | 2017-03-20 | 2017-05-10 | 西华大学 | Motor stator duct wind speed measurement device |
| CN107462743A (en) * | 2017-08-08 | 2017-12-12 | 北京卫星环境工程研究所 | Suitable for the wind speed calibration apparatus and scaling method under low pressure |
| CN109813935A (en) * | 2019-04-03 | 2019-05-28 | 昆山高新轨道交通智能装备有限公司 | A kind of portable airspeedometer verification system and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |