CN203587313U - Vacuum-pumping device system of wind tunnel pumping experiment - Google Patents
Vacuum-pumping device system of wind tunnel pumping experiment Download PDFInfo
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- CN203587313U CN203587313U CN201320689411.7U CN201320689411U CN203587313U CN 203587313 U CN203587313 U CN 203587313U CN 201320689411 U CN201320689411 U CN 201320689411U CN 203587313 U CN203587313 U CN 203587313U
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Abstract
Provided is a vacuum-pumping device system of a wind tunnel pumping experiment. The system comprises a wind tunnel, a first pump group, a second pump group, a silencer, a main air suction pipe, and a main exhaust pipe. The first pump group and the second pump group are connected in parallel between the main air suction pipe and the main exhaust pipe. An air outlet of the wind tunnel is connected with the main air suction pipe. The main air suction pipe is connected with an inlet air pipe of the main exhaust pipe and an inlet air pipe of the first pump group through two parallel pneumatic control valves. The main exhaust pipe is connected with the silencer. A pipeline between the two parallel pneumatic control valves and the main exhaust pipe is provided with an electric baffle valve. The inlet air pipe of the first pump group is provided with the electric baffle valve and a ripple compensator. The exhaust pipe of the first pump group is provided with a one-way valve and a ripple compensator. The main air suction pipeline where the wind tunnel and the second pump group are connected is provided with the pneumatic control valve and the electric baffle valve. The system is advantaged by high efficiency, stable operation, low noise, etc.
Description
Technical field
The utility model relates to a kind of aircraft height environment simulator, particularly relates to a kind of wind-tunnel odd test and tests vacuum extractor system.
Background technology
In continous way transonic wind tunnel, the effect of vacuum system is to extract the soft air in wind-tunnel out, and by air displacement in wind-tunnel, be dry decontamination gas by medium voltage network; Under each operating mode of wind tunnel test, by the suction action of vacuum system, reach and maintain under the pressure of setting, for wind tunnel test provides accurate atmospheric pressure environments simulation, i.e. aircraft height environmental simulation; When completing malleation test, by vacuum system, exit, to change model.Therefore, wind-tunnel pumped vacuum systems specifically comprises following three courses of work:
1, the test preparatory stage
In this stage, the effect of vacuum system is that the gas in the body of hole is aspirated, replaced.Process is: first utilize vacuum system that hole body pressure is pumped to 0.01MPa by 0.1 MPa; Recycling medium voltage network is inflated hole body; 1～2 time so repeatedly, even 3 times, until the gas dew point in hole reaches testing requirements.
After gas reaches the dew point of testing requirements, utilize vacuum system to finely tune hole body pressure, make the pressure in the body of hole reach testing requirements.
, test run process
In test run process, there is many reasons can cause hole body pressure higher than testing requirements pressure, these reasons comprise: in gas flow temperature variation, main compressor and auxiliary compressor, means of press seals air is revealed to hole body, and in icing tests process, spraying system also can spurt middle pressure air to hole body.Therefore, in wind tunnel operation process, need vacuum system constantly to aspirate the air in the body of hole, to keep hole body pressure.
, pressurized test venting controls
Under this operating mode, hole body pressure also can increase, and requires to arrange exhaust pilot piping, with the common control of same control valve group, the maintenance hole body pressure of adopting of vacuum suction.
In addition, after pressurized test finishes, in the time of need to carrying out model replacing or plant maintenance, need first hole body pressure to be returned to atmospheric pressure (0.1MPa), to guarantee smooth unlatching and the personal security at gate in chamber.
In prior art, original system adopts two groups of water ring vacuum pump groups as major equipment, and variable valve group adopts electric butterfly valve to use as fine setting vacuum, and its shortcoming is that efficiency is low, generally in 30% left and right, can reach 50% preferably.Low vacuum, this is not only because be subject to structural restriction, the more important thing is the restriction that is subject to working fluid saturated vapour pressure.The water liquid of working, ultimate pressure can only reach 2000 ~ 4000Pa.With the oil liquid of working, reach only 130KPa.Because variable valve group adopts electric butterfly valve, therefore control accuracy and speed comparatively coarse (pressure controling precision is only 3%).
Utility model content
There is defect and deficiency for overcoming above-mentioned prior art in the purpose of this utility model, and provides a kind of wind-tunnel odd test to test vacuum extractor system exactly.
The technical scheme adopting is:
Wind-tunnel odd test is tested vacuum extractor system, comprise wind-tunnel, pump group one, pump group two, exhaust box, main air intake duct and main exhaust, pump group one and pump group two are attempted by between main air intake duct and main exhaust, the gas outlet of wind-tunnel is connected with main air intake duct, main air intake duct is connected with the draft tube of pump group one with main exhaust respectively by two pneumatic control valves in parallel, main exhaust is connected with exhaust box, on pipeline between two pneumatic control valve and main exhausts in parallel, be equiped with electric gear plate valve, in the draft tube of pump group one, be equiped with electric gear plate valve and FlexbleJoint, on the gas outlet of pump group one, be equiped with retaining valve and FlexbleJoint, in the main suction line that wind-tunnel is connected with pump group two, be equiped with pneumatic control valve and electric gear plate valve, pump group two is connected with main exhaust with main air intake duct by draft tube and gas outlet are corresponding respectively, be connected with respectively draft tube and escape pipe, in the draft tube of pump group two, be equiped with electric gear plate valve and FlexbleJoint, on the gas outlet of pump group two, be equiped with retaining valve and FlexbleJoint.
The utlity model has following advantage:
1, efficiency is high, and two cover pump group power consumptions are only 200kw, and final vacuum can reach 1000Pa normal temperature air;
2, continuous operating time: be not less than 6 hours/time; Operate steadily, noise is lower than 50db;
3,1 year working time≤3000 hour;
4,1 year start-stop time≤5000 time;
5 on time≤5 minute/time;
6 stop time≤5 minute/time;
7 service life of vacuum pump >=30 year;
8 pressure controling precisions can reach 0.3%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Wind-tunnel odd test is tested vacuum extractor system, comprise wind-tunnel 13, pump group 1, pump group 2, exhaust box 12, main air intake duct 14 and main exhaust 15, pump group 1 and pump group 2 are attempted by between main air intake duct 14 and main exhaust 15, the gas outlet of wind-tunnel 13 is connected with main air intake duct 14, main air intake duct 14 is by two pneumatic control valves 4 in parallel, 5 main exhausts 15 are connected with the draft tube of pump group 2, main exhaust 15 is connected with exhaust box 12, two pneumatic control valves 4 in parallel, 5 and main exhaust 15 between pipeline on be equiped with electric gear plate valve 9, on the escape pipe of pump group 2, be equiped with electric gear plate valve 9 and FlexbleJoint 10, on the gas outlet of pump group 1, be equiped with retaining valve 11 and FlexbleJoint 10, the series connection that is equiped with butterfly valve 2 and electric gear plate valve 3 in the main suction line that wind-tunnel 13 is connected with pump group 1 adds electronic flapper valve 9, pump group 1 is connected with main exhaust 15 with main air intake duct 14 by draft tube and gas outlet are corresponding respectively, in the draft tube of pump group 1, be equiped with electric gear plate valve 9 and FlexbleJoint 10, on the gas outlet of pump group 1, be equiped with retaining valve 11 and FlexbleJoint 10.Wherein, pump group 1 and pump group 2 single pumps itself carry serial connection counnter attack valve 6, corrugated tube 7, solenoid valve 8.
Claims (1)
1. wind-tunnel odd test is tested vacuum extractor system, comprise wind-tunnel, pump group one, pump group two, exhaust box, main air intake duct and main exhaust, it is characterized in that described pump group one and pump group two are attempted by between main air intake duct and main exhaust, the gas outlet of wind-tunnel is connected with main air intake duct, main air intake duct is connected with the draft tube of pump group one with main exhaust respectively by two pneumatic control valves in parallel, main exhaust is connected with exhaust box, on pipeline between two pneumatic control valve and main exhausts in parallel, be equiped with electric gear plate valve, in the draft tube of pump group one, be equiped with electric gear plate valve and FlexbleJoint, on the gas outlet of pump group one, be equiped with retaining valve and FlexbleJoint, in the main suction line that wind-tunnel is connected with pump group two, be equiped with pneumatic control valve and electric gear plate valve, pump group two is connected with main exhaust with main air intake duct by draft tube and gas outlet are corresponding respectively, be connected with respectively draft tube and escape pipe, in the draft tube of pump group two, be equiped with electric gear plate valve and FlexbleJoint, on the gas outlet of pump group two, be equiped with retaining valve and FlexbleJoint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689411.7U CN203587313U (en) | 2013-11-05 | 2013-11-05 | Vacuum-pumping device system of wind tunnel pumping experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689411.7U CN203587313U (en) | 2013-11-05 | 2013-11-05 | Vacuum-pumping device system of wind tunnel pumping experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587313U true CN203587313U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689411.7U Expired - Fee Related CN203587313U (en) | 2013-11-05 | 2013-11-05 | Vacuum-pumping device system of wind tunnel pumping experiment |
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| CN (1) | CN203587313U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525379A (en) * | 2016-11-14 | 2017-03-22 | 北京航天长征飞行器研究所 | Air exhausting device and method employed by two sets of high-temperature supersonic wind tunnels jointly |
| CN110617938A (en) * | 2019-10-30 | 2019-12-27 | 中国空气动力研究与发展中心低速空气动力研究所 | Large icing wind tunnel height simulation system |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 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 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
| CN116256144A (en) * | 2023-05-16 | 2023-06-13 | 中国航空工业集团公司沈阳空气动力研究所 | Large continuous wind tunnel matched vacuum system and control method thereof |
-
2013
- 2013-11-05 CN CN201320689411.7U patent/CN203587313U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525379A (en) * | 2016-11-14 | 2017-03-22 | 北京航天长征飞行器研究所 | Air exhausting device and method employed by two sets of high-temperature supersonic wind tunnels jointly |
| CN106525379B (en) * | 2016-11-14 | 2019-01-15 | 北京航天长征飞行器研究所 | A kind of exhaust apparatus and method that two sets of high temperature ultrasonics speed wind-tunnel is shared |
| CN110617938A (en) * | 2019-10-30 | 2019-12-27 | 中国空气动力研究与发展中心低速空气动力研究所 | Large icing wind tunnel height simulation system |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 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 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
| CN116213364B (en) * | 2023-05-11 | 2023-07-21 | 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 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
| CN116256144A (en) * | 2023-05-16 | 2023-06-13 | 中国航空工业集团公司沈阳空气动力研究所 | Large continuous wind tunnel matched vacuum system and control method thereof |
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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: 20140507 Termination date: 20181105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |