CN106768802B - A kind of high-purity special gas charging device and methods for filling for shock tunnel - Google Patents
A kind of high-purity special gas charging device and methods for filling for shock tunnel Download PDFInfo
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- CN106768802B CN106768802B CN201611104648.9A CN201611104648A CN106768802B CN 106768802 B CN106768802 B CN 106768802B CN 201611104648 A CN201611104648 A CN 201611104648A CN 106768802 B CN106768802 B CN 106768802B
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Abstract
A kind of high-purity special gas charging device and methods for filling for shock tunnel is related to hypersonic shock tunnel engineering field；Including vacuum suction apparatus, special gas air charging system, measuring device and blowdown piping；Vacuum suction apparatus, special gas air charging system and measuring device are respectively and fixedly installed to the same side of external shock tunnel gun barrel section, and blowdown piping is fixedly mounted on the other side of external shock tunnel gun barrel section；The vacuum suction apparatus includes vacuum pump, vacuum pump valve, vacuum pump atmosphere valve, vacuum ripple hose and high-pressure air operated valve；Wherein, the air inlet of vacuum pump is divided into two pipelines after being fixedly connected with vacuum pump valve, wherein a pipeline is fixedly connected with vacuum pump atmosphere valve, another pipeline is fixedly connected with vacuum ripple hose and high-pressure air operated valve successively；The other end of high-pressure air operated valve is fixedly connected with external shock tunnel gun barrel section；The present invention improves the purity of special test gas filling, realizes the long-range and automatic control filled.
Description
Technical field
The present invention relates to a kind of hypersonic shock tunnel engineering fields, especially a kind of high-purity for shock tunnel
Special gas charging device and methods for filling.
Background technology
Shock tunnel is a kind of special hypersonic wind tunnel, shock tunnel be by the compression of shock wave come improve wind-tunnel come
Total temperature is flowed, shock tunnel structure is very simple, and cost is also cheaper, with the development of modern test technology, can undertake big portion
The hypersonic aerodynamic force divided and the experiment of pneumatic thermal measurement, play more and more important in the aerodynamic configuration development process of new model
Effect.Simultaneously in certain shock tunnel experiments, special gas (nitrogen, helium that high-purity is filled in shock wave pipeline section are needed
Or carbon dioxide etc.), it is necessary to first (generally requires to be drawn into very low vacuum degree in shock tunnel gun barrel and be drawn into 500Pa
Hereinafter, even lower), and the piping connection bore open in shock tunnel gun barrel (otherwise cannot can influence wind tunnel test stream very much greatly
), conventional vacuum suction pipeline cannot be satisfied requirement.Pressure height is (with 11 institute's FD-20 wind of space flight in shock tunnel operational process
For hole, pressure is even higher up to 30MPa under normal condition), the requirement to pipe-line system is very high.Therefore high-purity special type gas
Body charging device should meet vacuum suction and require, and meeting high pressure gas again influences the impact of device.Simultaneously for pressure
Measurement for, the measurement range of general sensor needs the pressure model measured in 2-3 magnitude for shock tunnel
Enclose can up to 7 magnitudes (even tens megapascal from several pas to several megapascal), while the vacuum transducer of conventional wind-tunnel is mostly
Thermal conductivity vacuum meter, measurement range 1Pa-5000Pa or so, and usually demarcated under air conditions, and it is extraordinary
There are deviations in the measurement process of gas.Therefore minimum charge pressure is at several kPas in special gas filling process, individually
Vacuum meter cannot be satisfied measurement demand.
Invention content
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, it is special to provide a kind of high-purity for shock tunnel
Kind gas filling device, solves in shock tunnel special gas filling process, and shock tunnel pressure fluctuation is big, and shock tube is taken out true
Empty difficult, the problem that pressure measurement accuracy is poor, measurement range is narrow improves the purity of special test gas filling, realizes and fill
The long-range and automatic control of dress.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of high-purity special gas charging device for shock tunnel, including vacuum suction apparatus, special gas fill
Device of air, measuring device and blowdown piping；Wherein, vacuum suction apparatus, special gas air charging system and measuring device are solid respectively
Dingan County is mounted in the same side of external shock tunnel gun barrel section, and blowdown piping is fixedly mounted on the another of external shock tunnel gun barrel section
Side；The vacuum suction apparatus includes vacuum pump, vacuum pump valve, vacuum pump atmosphere valve, vacuum ripple hose and high pressure gas
Dynamic valve；Wherein, the air inlet of vacuum pump is divided into two pipelines after being fixedly connected with vacuum pump valve, wherein a pipeline and vacuum pump
Atmosphere valve is fixedly connected, and another pipeline is fixedly connected with vacuum ripple hose and high-pressure air operated valve successively；High-pressure pneumatic
The other end of valve is fixedly connected with external shock tunnel gun barrel section.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, special gas inflation dress
It sets including special gas gas cylinder, pressure reducing valve, high-pressure hose and charge valve；Wherein, special gas gas cylinder, pressure reducing valve, high-pressure hose
It is fixedly connected with external shock tunnel gun barrel section after being sequentially connected with charge valve.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the measuring device includes height
Press pneumatic operated valve, high pressure load cell, high pressure atmosphere valve, vacuum protective valve, vacuum meter, low-pressure sensor and low pressure
Power atmosphere valve；Wherein, high-pressure air operated valve one end is fixedly connected with external shock tunnel gun barrel section, and the other end is divided into two-way,
Wherein be fixedly connected successively with high pressure load cell and high pressure atmosphere valve all the way, another way respectively with vacuum protection
Valve, vacuum meter, low-pressure sensor are fixedly connected with low-pressure atmosphere valve.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the blowdown piping includes gas
Dynamic vent valve, bypass deflation hand valve and muffler；Wherein, after pneumatic vent valve is in parallel with bypass deflation hand valve, one end and outside
Shock tunnel gun barrel section is fixedly connected, and the other end is fixedly connected with muffler.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the vacuum ripple hose
Bore is not less than the air inlet bore of vacuum pump；The bore of high-pressure air operated valve is not less than the connector of external shock tunnel gun barrel section
Bore.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the vacuum is calculated as heat transfer
Vacuum meter；The range of low-pressure sensor is 0.1-0.15MPa；High pressure load cell range is 0.1-30MPa；High pressure is big
Gas communicating valve, low-pressure atmosphere valve and vacuum protective valve use vacuum valve.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the measurement of the measuring device
Precision is the pressure of 1Pa-30MPa.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, special gas charging device fills
The method of high-purity special gas is：
Step (1) vacuumizes
After the pressure in external shock tunnel gun barrel section is pumped to required vacuum degree by vacuum suction apparatus, close high
Pneumatic operated valve is pressed, and opens vacuum pump atmosphere valve, realizes the protection to vacuum pump；
Step (2), inflation
The special gas in special gas gas cylinder is depressurized to required pressure by pressure reducing valve, charge valve is opened, is charged to examination
It tests after requiring pressure, closes charge valve；
Step (3) measures vacuum pressure
It is first shut off high pressure atmosphere valve and low-pressure atmosphere valve, opens high-pressure air operated valve, vacuum protective valve；
When needing to measure positive pressure, high pressure atmosphere valve and vacuum protective valve are closed, opens high-pressure air operated valve, low-pressure atmosphere
Valve；Before shock tunnel operation, high-pressure air operated valve and vacuum protective valve are closed, opens high pressure atmosphere valve and low-pressure air
Communicating valve；
Step (4), deflation
After shock tunnel end of run, opens pneumatic vent valve and deflate；Meanwhile it can manually opened bypass deflation hand
Valve is deflated manually.
The present invention has the following advantages that compared with prior art：
(1) the present invention provides a kind of carrying out the system that high-purity special gas fills in shock tunnel, wherein measuring
Being used cooperatively by multiple sensors in system, improves the precision and range of measurement, while increasing atmosphere valve, makes
Low-pressure sensor and vacuum meter are not easily susceptible to the impact of high-pressure gas and damage；
(2) vacuum line protection valve and atmosphere valve have been used in the present invention in vacuum pick-up system, and has passed through conjunction
The circuit design of reason makes the flow resistance of pipeline reduce, conductance improves, it is ensured that the efficiency of vacuum system suction improves the pole of system
Limit vacuum degree；
(3) present invention has used vacuum hose and high pressure soft in vacuum pick-up system and special gas inflation system respectively
Pipe, makes whole system adapt to shock tunnel situation of movement；
(4) valve used in the present invention is all made of pneumatic operated valve in addition to blowdown piping bypasses deflation hand valve, realizes system
Remote control and automatic running.
Description of the drawings
Fig. 1 is high-purity special gas charging device structural schematic diagram of the present invention.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
The present invention provides a kind of to carry out the system that high-purity special gas fills, wherein measuring system in shock tunnel
In being used cooperatively by multiple sensors, improve the precision and range of measurement, while increasing atmosphere valve, make low pressure
Force snesor and vacuum meter are not easily susceptible to the impact of high-pressure gas and damage；Vacuum line guarantor has been used in vacuum pick-up system
Valve and atmosphere valve are protected, and so that the flow resistance of pipeline is reduced by rational circuit design, conductance raising, it is ensured that vacuum system
The efficiency of system suction, improves the final vacuum of system；Make in vacuum pick-up system and special gas inflation system respectively
With vacuum hose and high-pressure hose, whole system is made to have adapted to shock tunnel situation of movement.Primary valve uses pneumatic operated valve, real
The remote control and automatic running of system are showed.
It is high-purity special gas charging device structural schematic diagram as shown in Figure 1, as seen from the figure, one kind being used for shock tunnel
High-purity special gas charging device, it is characterised in that：Including vacuum suction apparatus 1, special gas air charging system 2, measure
Device 3 and blowdown piping 4；Wherein, vacuum suction apparatus 1, special gas air charging system 2 and measuring device 3 are fixedly mounted respectively
In the same side of external shock tunnel gun barrel section, blowdown piping 4 is fixedly mounted on the other side of external shock tunnel gun barrel section；Institute
It includes vacuum pump 101, vacuum pump valve 102, vacuum pump atmosphere valve 103, vacuum ripple hose 104 to state vacuum suction apparatus 1
With high-pressure air operated valve 105；Wherein, the air inlet of vacuum pump 101 is divided into two pipelines after being fixedly connected with vacuum pump valve 102,
In a pipeline be fixedly connected with vacuum pump atmosphere valve 103, another pipeline successively with vacuum ripple hose 104 and high pressure
Pneumatic operated valve 105 is fixedly connected；The other end of high-pressure air operated valve 105 is connected directly between external shock tunnel gun barrel section by connector
On, reduce the influence of pipeline flow resistance.Wherein, the bore of vacuum ripple hose 104 is not less than the air inlet mouth of vacuum pump 101
Diameter；The bore of high-pressure air operated valve 105 is not less than the connector bore of external shock tunnel gun barrel section, external shock tunnel gun barrel section
Bore according to do not influence shock tunnel flow field maximum bore choose.
Wherein, special gas air charging system 2 includes special gas gas cylinder 201, pressure reducing valve 202, high-pressure hose 203 and inflation
Valve 204；Wherein, swash after special gas gas cylinder 201, pressure reducing valve 202, high-pressure hose 203 and charge valve 204 are sequentially connected and outside
Wave wind-tunnel gun tube section is fixedly connected.
Measuring device 3 includes high-pressure air operated valve 301, high pressure load cell 302, high pressure atmosphere valve 303, vacuum
Protect valve 304, vacuum meter 305, low-pressure sensor 306 and low-pressure atmosphere valve 307；Wherein, high-pressure air operated valve 301 1
End with outside shock tunnel gun barrel section be fixedly connected, the other end is divided into two-way, wherein all the way successively with high pressure load cell 302
It is fixedly connected with high pressure atmosphere valve 303, another way is sensed with vacuum protective valve 304, vacuum meter 305, low-pressure respectively
Device 306 is fixedly connected with low-pressure atmosphere valve 307.The pipe that high-pressure air operated valve 301 is connect with external shock tunnel gun barrel section
Pipeline between road, valve and sensor is as short as possible, ensures the accuracy measured.
Blowdown piping 4 includes pneumatic vent valve 401, bypass deflation hand valve 402 and muffler 403；Wherein, pneumatic vent valve
After 401 is in parallel with bypass deflation hand valve 402, one end is fixedly connected with external shock tunnel gun barrel section, the other end and muffler 403
It is fixedly connected.
Vacuum meter 305 is thermal radiation vacuum gauge；The range of low-pressure sensor 306 is 0.1-0.15MPa；High pressure pressure measurement passes
302 range of sensor is 0.1-30MPa；High pressure atmosphere valve 303, low-pressure atmosphere valve 307 and vacuum protective valve 304
Using vacuum valve.
The measurement accuracy of measuring device 3 is the pressure of 1Pa-30MPa.
The method that special gas charging device fills high-purity special gas is：
Step (1) vacuumizes
After the pressure in external shock tunnel gun barrel section is pumped to required vacuum degree by vacuum suction apparatus 1, close
High-pressure air operated valve 105, and vacuum pump atmosphere valve 103 is opened, realize the protection to vacuum pump 101；
Step (2), inflation
The special gas in special gas gas cylinder 201 is depressurized to required pressure by pressure reducing valve 202, opens charge valve
204, after being charged to test requirements document pressure, close charge valve 204；
Step (3) measures vacuum pressure
It is first shut off high pressure atmosphere valve 303 and low-pressure atmosphere valve 307, opens high-pressure air operated valve 301, true
Sky protection valve 304；When needing to measure positive pressure, high pressure atmosphere valve 303 and vacuum protective valve 304 are closed, opens high pressure gas
Dynamic valve 301, low-pressure atmosphere valve 307；Before shock tunnel operation, high-pressure air operated valve 301 and vacuum protective valve 304 are closed,
High pressure atmosphere valve 303 and low-pressure atmosphere valve 307 are opened, protects vacuum meter 305 and low-pressure sensor 306 not
High pressure gas influences when being put to the test；
Step (4), deflation
After shock tunnel end of run, opens pneumatic vent valve 401 and deflate；Meanwhile it manually opened can bypass and put
Gas hand valve 402 is deflated manually.
The content that description in the present invention is not described in detail belongs to the known technology of those skilled in the art.
Claims (8)
1. a kind of high-purity special gas charging device for shock tunnel, it is characterised in that：Including vacuum suction apparatus
(1), special gas air charging system (2), measuring device (3) and blowdown piping (4)；Wherein, vacuum suction apparatus (1), extraordinary gas
Body air charging system (2) and measuring device (3) are respectively and fixedly installed to the same side of external shock tunnel gun barrel section, blowdown piping
(4) it is fixedly mounted on the other side of external shock tunnel gun barrel section；The vacuum suction apparatus (1) includes vacuum pump (101), true
Empty pump valve (102), vacuum pump atmosphere valve (103), vacuum ripple hose (104) and high-pressure air operated valve (105)；Wherein, very
The air inlet of sky pump (101) is divided into two pipelines after being fixedly connected with vacuum pump valve (102), wherein a pipeline and vacuum pump are big
Gas communicating valve (103) is fixedly connected, and another pipeline is fixed with vacuum ripple hose (104) and high-pressure air operated valve (105) successively
Connection；The other end of high-pressure air operated valve (105) is fixedly connected with external shock tunnel gun barrel section.
2. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
The special gas air charging system (2) includes special gas gas cylinder (201), pressure reducing valve (202), high-pressure hose (203) and fills
Air valve (204)；Wherein, special gas gas cylinder (201), pressure reducing valve (202), high-pressure hose (203) and charge valve (204) connect successively
It is fixedly connected with external shock tunnel gun barrel section after connecing.
3. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
The measuring device (3) includes high-pressure air operated valve (301), high pressure load cell (302), high pressure atmosphere valve
(303), vacuum protective valve (304), vacuum meter (305), low-pressure sensor (306) and low-pressure atmosphere valve (307)；Its
In, high-pressure air operated valve (301) one end is fixedly connected with external shock tunnel gun barrel section, and the other end is divided into two-way, wherein all the way according to
It is secondary to be fixedly connected with high pressure load cell (302) and high pressure atmosphere valve (303), another way respectively with vacuum protective valve
(304), vacuum meter (305), low-pressure sensor (306) are fixedly connected with low-pressure atmosphere valve (307).
4. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
The blowdown piping (4) includes pneumatic vent valve (401), bypass deflation hand valve (402) and muffler (403)；Wherein, pneumatically
After vent valve (401) is in parallel with bypass deflation hand valve (402), one end is fixedly connected with external shock tunnel gun barrel section, the other end
It is fixedly connected with muffler (403).
5. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
The bore of the vacuum ripple hose (104) is not less than the air inlet bore of vacuum pump (101)；High-pressure air operated valve (105)
Bore is not less than the connector bore of external shock tunnel gun barrel section.
6. a kind of high-purity special gas charging device for shock tunnel according to claim 3, it is characterised in that：
The vacuum meter (305) is thermal radiation vacuum gauge；The range of low-pressure sensor (306) is 0.1-0.15MPa；High pressure pressure measurement
Sensor (302) range is 0.1-30MPa；High pressure atmosphere valve (303), low-pressure atmosphere valve (307) and vacuum
Valve (304) is protected to use vacuum valve.
7. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
The measurement accuracy of the measuring device (3) is the pressure of 1Pa-30MPa.
8. a kind of high-purity special gas charging device for shock tunnel according to one of claim 1-7, special
Sign is：The method that special gas charging device fills high-purity special gas is：
Step (1) vacuumizes
After the pressure in external shock tunnel gun barrel section is pumped to required vacuum degree by vacuum suction apparatus (1), close high
Pneumatic operated valve (105) is pressed, and opens vacuum pump atmosphere valve (103), realizes the protection to vacuum pump (101)；
Step (2), inflation
The special gas in special gas gas cylinder (201) is depressurized to required pressure by pressure reducing valve (202), opens charge valve
(204), after being charged to test requirements document pressure, charge valve (204) is closed；
Step (3) measures vacuum pressure
Be first shut off high pressure atmosphere valve (303) and low-pressure atmosphere valve (307), open high-pressure air operated valve (301),
Vacuum protective valve (304)；When needing to measure positive pressure, high pressure atmosphere valve (303) and vacuum protective valve (304) are closed, is opened
Open high-pressure air operated valve (301), low-pressure atmosphere valve (307)；Shock tunnel operation before, close high-pressure air operated valve (301) and
Vacuum protective valve (304) opens high pressure atmosphere valve (303) and low-pressure atmosphere valve (307)；
Step (4), deflation
After shock tunnel end of run, opens pneumatic vent valve (401) and deflate；Meanwhile it can manually opened bypass deflation
Hand valve (402) is deflated manually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611104648.9A CN106768802B (en) | 2016-12-05 | 2016-12-05 | A kind of high-purity special gas charging device and methods for filling for shock tunnel |
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| CN201611104648.9A CN106768802B (en) | 2016-12-05 | 2016-12-05 | A kind of high-purity special gas charging device and methods for filling for shock tunnel |
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| CN106768802B true CN106768802B (en) | 2018-10-09 |
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| CN108398272B (en) * | 2017-12-14 | 2019-11-12 | 中国航天空气动力技术研究院 | A kind of fuel system and method for the test of shock tunnel super burn engine inlets |
| CN108278487B (en) * | 2017-12-22 | 2019-12-20 | 中国航天空气动力技术研究院 | Switching device for free piston shock tunnel compression pipe and inflation device |
| CN110987359A (en) * | 2019-12-25 | 2020-04-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure control system for PSP dynamic calibration device |
| CN111366263B (en) * | 2020-01-21 | 2021-03-02 | 中国科学院力学研究所 | A high temperature calibration device and method for TDLAS temperature measurement based on shock tube |
| CN112985741B (en) * | 2021-02-07 | 2022-05-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Piston type wind tunnel special gas inflation method utilizing compressed air power |
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