CN2694247Y - Low noise wind tunnel used for automobile wind tunnel experiment - Google Patents
Low noise wind tunnel used for automobile wind tunnel experiment Download PDFInfo
- Publication number
- CN2694247Y CN2694247Y CN 200420011611 CN200420011611U CN2694247Y CN 2694247 Y CN2694247 Y CN 2694247Y CN 200420011611 CN200420011611 CN 200420011611 CN 200420011611 U CN200420011611 U CN 200420011611U CN 2694247 Y CN2694247 Y CN 2694247Y
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- tunnel
- wind tunnel
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Abstract
The utility model relates to a wind tunnel used for automobile wind tunnel experiment apparatus, in particular to a wind tunnel with the measure of reducing wind noise, which is a closed-loop single reflux wind tunnel composed of an experiment section, a diffuser section, a corner, a power section, a stable section and a contracted section. The wind tunnel is characterized in that the diffuser section is formed by the ends of a plurality of sections of tunnel bodies in flange connection, and the tunnel body is composed of an inner wall perforated panel, an exterior panel, and sound-absorbing cotton and support reinforcing rods in an interlayer between the perforated plate of inner wall and the exterior panel. The innovations of the utility is that the common solid steel plate which is the traditional inner wall of the tunnel body of diffuser section is changed into the perforated plate, an I-shaped steel is adopted as the support reinforcing rods to connect and support between the inner wall panel and the exterior panel, the sound-absorbing cotton is filled between the inner wall panel and the exterior panel, therefore, the noise of the wind tunnel can be reduced substantially, and the environment of the experiment working can be improved obviously.
Description
Technical field
The utility model relates to the wind tunnel device that is used for automobile wind tunnel test, particularly a kind of wind-tunnel with the pneumatic noise measure of reduction.
Background technology
The wind tunnel device that is used for automobile wind tunnel test, its diffuser is positioned at after the test section, causes stronger aerodynamic noise owing to pipeline shape wind-tunnel free area progressively becomes greatly, does not consider to reduce the aerodynamic noise technology in traditional wind tunnel device.Therefore, when automobile carries out test experiments in this wind tunnel device, make working environment be subjected to bigger noise, health of human body is caused adverse effect.
Summary of the invention
The purpose of this utility model is to have stronger aerodynamic noise problem in order to solve above-mentioned wind tunnel device, designs a kind of low noise wind-tunnel that is used for automobile wind tunnel test.
The single backflow wind-tunnel of closed loop that the utility model is made up of test section, diffuser, turning, power section, stable section and contraction section, it is characterized in that described diffuser is formed by connecting by end flange by number joint hole body, the hole body is made up of cotton of the sound absorption between inwall perforated plate and exterior panel and interlayer thereof and brace rod.
The technical scheme innovation part that the utility model provides is, change the inside panel of conventional diffusion section hole body into perforated plate by common solid steel plate, adopt joist steel to connect between inside panel and the exterior panel and supports, and between inside panel and exterior panel, insert the sound absorption cotton as brace rod.Therefore, reduce wind tunnel noise significantly, obviously improved the experiment work environment.
Description of drawings
Fig. 1 is that the utility model wind-tunnel diffuser structure master looks synoptic diagram;
Fig. 2 is the utility model wind-tunnel xsect cross-sectional schematic.
Embodiment
Below the embodiment that provides with regard to accompanying drawing the utility model construction of wind tunnel is described in further detail.
The single backflow wind-tunnel of closed loop that the utility model is made up of test section, diffuser, turning, power section, stable section and contraction section, with reference to Fig. 1,2, it is characterized in that described diffuser is formed by connecting by end flange 2 by number joint hole body 1, hole body 1 is made up of sound absorption between inwall perforated plate 4 and exterior panel 3 and interlayer thereof cotton 5 and brace rod 6.
Weld mutually with brace rod 6 that joist steel is made around the wall perforated plate 4 within the hole body 1, the middle rivet 7 that passes through rivets mutually.
The interlayer spacing of hole body 1 inside and outside wallboard 4,3 is 180-210mm, and the penetration hole diameter on the inwall perforated plate 4 is that 2-4mm, each pitch of holes are 3-5mm.
Claims (3)
1. low noise wind-tunnel that is used for automobile wind tunnel test, the single backflow wind-tunnel of the closed loop of forming by test section, diffuser, turning, power section, stable section and contraction section, it is characterized in that described diffuser is formed by connecting by end flange (2) by number joint hole body (1), hole body (1) is made up of sound absorption cotton (5) between inwall perforated plate (4) and exterior panel (3) and interlayer thereof and brace rod (6).
2. the low noise wind-tunnel that is used for automobile wind tunnel test according to claim 1 is characterized in that wall perforated plate (4) welds mutually with the brace rod (6) that joist steel is made within the described hole body (1), the middle rivet (7) that passes through is riveted mutually all around.
3. the low noise wind-tunnel that is used for automobile wind tunnel test according to claim 1 and 2, the interlayer spacing that it is characterized in that the inside and outside wallboard of described hole body (1) (4), (3) is 180-210mm, and the penetration hole diameter on the inwall perforated plate (4) is that 2-4mm, each pitch of holes are 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011611 CN2694247Y (en) | 2004-03-03 | 2004-03-03 | Low noise wind tunnel used for automobile wind tunnel experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011611 CN2694247Y (en) | 2004-03-03 | 2004-03-03 | Low noise wind tunnel used for automobile wind tunnel experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2694247Y true CN2694247Y (en) | 2005-04-20 |
Family
ID=34768535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420011611 Expired - Fee Related CN2694247Y (en) | 2004-03-03 | 2004-03-03 | Low noise wind tunnel used for automobile wind tunnel experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2694247Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374841C (en) * | 2005-12-23 | 2008-03-12 | 吉林大学 | Automobile wind tunnel balancing seam silencer |
| CN104502051A (en) * | 2014-12-23 | 2015-04-08 | 中誉远发国际建设集团有限公司 | Double-layer tube structure used for diffusion section of diffuser and manufacturing method for double-layer tube structure |
| CN104596723A (en) * | 2015-01-28 | 2015-05-06 | 中誉远发国际建设集团有限公司 | Production method of diffuser used in aerodynamic experiments |
| CN109632246A (en) * | 2019-02-01 | 2019-04-16 | 国电环境保护研究院有限公司 | The closed circuit dual-purpose wind-tunnel of open circuit of reverse-flow type |
| CN114211214A (en) * | 2022-02-21 | 2022-03-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel complex curved surface contraction section forming method |
| CN115791072A (en) * | 2023-02-10 | 2023-03-14 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Air-isolation sound-transmission type wind tunnel test section |
-
2004
- 2004-03-03 CN CN 200420011611 patent/CN2694247Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374841C (en) * | 2005-12-23 | 2008-03-12 | 吉林大学 | Automobile wind tunnel balancing seam silencer |
| CN104502051A (en) * | 2014-12-23 | 2015-04-08 | 中誉远发国际建设集团有限公司 | Double-layer tube structure used for diffusion section of diffuser and manufacturing method for double-layer tube structure |
| CN104502051B (en) * | 2014-12-23 | 2017-06-16 | 中誉远发国际建设集团有限公司 | For the double-layer barrel structure and manufacture method of diffuser diffuser |
| CN104596723A (en) * | 2015-01-28 | 2015-05-06 | 中誉远发国际建设集团有限公司 | Production method of diffuser used in aerodynamic experiments |
| CN109632246A (en) * | 2019-02-01 | 2019-04-16 | 国电环境保护研究院有限公司 | The closed circuit dual-purpose wind-tunnel of open circuit of reverse-flow type |
| CN109632246B (en) * | 2019-02-01 | 2024-02-06 | 国电环境保护研究院有限公司 | Reflux type closed-circuit and open-circuit dual-purpose wind tunnel |
| CN114211214A (en) * | 2022-02-21 | 2022-03-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel complex curved surface contraction section forming method |
| CN114211214B (en) * | 2022-02-21 | 2022-04-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel complex curved surface contraction section forming method |
| CN115791072A (en) * | 2023-02-10 | 2023-03-14 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Air-isolation sound-transmission type wind tunnel test section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050420 |