CN106768802A - 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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- CN106768802A CN106768802A CN201611104648.9A CN201611104648A CN106768802A CN 106768802 A CN106768802 A CN 106768802A CN 201611104648 A CN201611104648 A CN 201611104648A CN 106768802 A CN106768802 A CN 106768802A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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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 aerating device, measurement apparatus and blowdown piping；Vacuum suction apparatus, special gas aerating device and measurement apparatus are respectively and fixedly installed to the same side of outside shock tunnel gun barrel section, and blowdown piping is fixedly mounted on the opposite side of outside shock tunnel gun barrel section；The vacuum suction apparatus include vavuum pump, vacuum pump valve, vavuum pump atmosphere valve, vacuum ripple flexible pipe and high-pressure air operated valve；Wherein, the air inlet of vavuum pump is divided into two pipelines after being fixedly connected with vacuum pump valve, wherein a pipeline is fixedly connected with vavuum pump atmosphere valve, another pipeline is fixedly connected with vacuum ripple flexible pipe and high-pressure air operated valve successively；The other end of high-pressure air operated valve is fixedly connected with outside shock tunnel gun barrel section；The present invention improves the purity of special test gas filling, realizes the long-range and automatic control for filling.
Description
Technical field
The present invention relates to a kind of hypersonic shock tunnel engineering field, particularly 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 improved by the compression of shock wave wind-tunnel come
Stream stagnation temperature, shock tunnel structure is very simple, and cost, with the development of modern test technology, can undertake big portion also than less expensive
The hypersonic aerodynamic force for dividing and the experiment of pneumatic thermal measurement, play more and more important in the aerodynamic configuration development process of new model
Effect., it is necessary to fill special gas (nitrogen, the helium of high-purity in shock wave pipeline section in some shock tunnels experiment simultaneously
Or carbon dioxide etc.), it is necessary to first (generally require and be drawn into 500Pa to be drawn into very low vacuum in shock tunnel gun barrel
Hereinafter, it is even lower), and the pipeline connection bore open in shock tunnel gun barrel (can not can otherwise influence wind tunnel test stream very much greatly
), conventional vacuum suction pipeline cannot meet requirement.Pressure is high (with the institute's FD-20 wind of space flight 11 in shock tunnel running
As a example by hole, pressure is up to 30MPa even more highs 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, impact influence of the gases at high pressure on device is met again.Simultaneously for pressure
Measurement for, the measurement range of general sensor in 2-3 magnitude, and needed for shock tunnel measurement pressure model
Enclose can up to 7 magnitudes (from several handkerchiefs to several MPas even tens MPas), while the vacuum transducer of the wind-tunnel of routine is generally
Thermal conductivity vacuum meter, measurement range 1Pa-5000Pa or so, and be usually what is demarcated under air conditionses, and it is extraordinary
There is deviation in the measurement process of gas.Therefore in special gas filling process minimum charge pressure at several kPas, individually
Vacuum meter cannot meet measurement demand.
The content of the invention
Above-mentioned deficiency it is an object of the invention to overcome prior art, there is provided a kind of high-purity for shock tunnel is special
Gas filling device is planted, is solved in shock tunnel special gas filling process, shock tunnel pressure fluctuation is big, and shock tube is taken out very
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.
Above-mentioned purpose of the 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, measurement apparatus and blowdown piping；Wherein, vacuum suction apparatus, special gas aerating device and measurement apparatus are solid respectively
The same side of fixed shock tunnel gun barrel section mounted externally, blowdown piping is fixedly mounted on the another of outside shock tunnel gun barrel section
Side；The vacuum suction apparatus include vavuum pump, vacuum pump valve, vavuum pump atmosphere valve, vacuum ripple flexible pipe and high pressure gas
Dynamic valve；Wherein, the air inlet of vavuum pump is divided into two pipelines after being fixedly connected with vacuum pump valve, wherein a pipeline and vavuum pump
Atmosphere valve is fixedly connected, and another pipeline is fixedly connected with vacuum ripple flexible pipe and high-pressure air operated valve successively；High-pressure pneumatic
The other end of valve is fixedly connected with outside shock tunnel gun barrel section.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, described special gas inflation dress
Put 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 outside 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, described measurement apparatus include height
Pressure 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 outside shock tunnel gun barrel section, and the other end is divided into two-way,
Wherein be fixedly connected with high pressure load cell and high pressure atmosphere valve successively all the way, another road 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, described blowdown piping includes gas
Dynamic vent valve, bypass deflation hand valve and muffler；Wherein, pneumatic vent valve with bypass deflation hand valve it is in parallel after, one end with 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, described vacuum ripple flexible pipe
Air inlet bore of the bore not less than vavuum pump；The bore of high-pressure air operated valve is not less than the connector of outside shock tunnel gun barrel section
Bore.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, described vacuum is calculated as heat transfer
Vacuum meter；The range of low-pressure sensor is 0.1-0.15MPa；High pressure transducer range is 0.1-30MPa；High pressure air
Communicating valve, low-pressure atmosphere valve and vacuum meter protection valve use vacuum valve.
In a kind of above-mentioned high-purity special gas charging device for shock tunnel, the measurement of described measurement apparatus
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 is filled
The method of high-purity special gas is：
Step (1), vacuumize
After the pressure in outside shock tunnel gun barrel section is pumped to required vacuum by vacuum suction apparatus, close high
Pressure pneumatic operated valve, and vavuum pump atmosphere valve is opened, realize the protection to vavuum pump；
Step (2), inflation
Special gas in special gas gas cylinder is depressurized to by required pressure by pressure-reducing valve, charge valve is opened, examination is charged to
Test after requiring pressure, close charge valve；
Step (3), measurement vacuum pressure
High pressure atmosphere valve and low-pressure atmosphere valve are first shut off, high-pressure air operated valve, vacuum meter protection is opened
Valve；When needing measurement malleation, high pressure atmosphere valve and vacuum meter protection valve are closed, open high-pressure air operated valve, low-pressure big
Gas communicating valve；Before shock tunnel operation, high-pressure air operated valve and vacuum meter protection valve are closed, open high pressure atmosphere valve and low
Pressure atmosphere valve；
Step (4), deflation
After shock tunnel end of run, open pneumatic vent valve and deflated；Meanwhile, can be entered with manually opened bypass hand valve
Row is deflated manually.
The present invention has the following advantages that compared with prior art：
(1) system that high-purity special gas is filled is carried out in shock tunnel the invention provides a kind of, wherein measuring
Using cooperatively by multiple sensors, improves the precision and scope of measurement in system, while increased 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 has been used to protect valve and atmosphere valve in the present invention in vacuum pick-up system, and by closing
The circuit design of reason reduces the flow resistance of pipeline, conductance is improved, it is ensured that the efficiency of vacuum system suction, improves the pole of system
Limit vacuum；
(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 by the present invention uses pneumatic operated valve in addition to blowdown piping bypass hand valve, realizes the long-range of system
Control and automatic running.
Brief description of the drawings
Fig. 1 is high-purity special gas charging device structural representation of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The system that high-purity special gas is filled, wherein measuring system are carried out in shock tunnel the invention provides a kind of
In being used cooperatively by multiple sensors, improve the precision and scope of measurement, while increased 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
Shield valve and atmosphere valve, and 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 set 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 as shown in Figure 1 high-purity special gas charging device structural representation, as seen from the figure, one kind is used for shock tunnel
High-purity special gas charging device, it is characterised in that：Including vacuum suction apparatus 1, special gas aerating device 2, measurement
Device 3 and blowdown piping 4；Wherein, vacuum suction apparatus 1, special gas aerating device 2 and measurement apparatus 3 are fixedly mounted respectively
In the same side of outside shock tunnel gun barrel section, blowdown piping 4 is fixedly mounted on the opposite side of outside shock tunnel gun barrel section；Institute
Stating vacuum suction apparatus 1 includes vavuum pump 101, vacuum pump valve 102, vavuum pump atmosphere valve 103, vacuum ripple flexible pipe 104
With high-pressure air operated valve 105；Wherein, the air inlet of vavuum pump 101 is divided into two pipelines after being fixedly connected with vacuum pump valve 102, its
In a pipeline be fixedly connected with vavuum pump atmosphere valve 103, another pipeline successively with vacuum ripple flexible pipe 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 outside shock tunnel gun barrel section by joint
On, reduce the influence of pipeline flow resistance.Wherein, air inlet mouthful of the bore of vacuum ripple flexible pipe 104 not less than vavuum pump 101
Footpath；The bore of high-pressure air operated valve 105 is not less than the connector bore of outside shock tunnel gun barrel section, outside shock tunnel gun barrel section
Bore according to not influenceing the maximum bore in shock tunnel flow field to choose.
Wherein, special gas aerating device 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
Ripple wind-tunnel gun tube section is fixedly connected.
Measurement apparatus 3 include high-pressure air operated valve 301, high pressure load cell 302, high pressure atmosphere valve 303, vacuum
Protection valve 304, vacuum meter 305, low-pressure sensor 306 and low-pressure atmosphere valve 307；Wherein, high-pressure air operated valve 301 1
End is fixedly connected with outside shock tunnel gun barrel section, and 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 road senses 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 connected with outside shock tunnel gun barrel section
Pipeline between road, valve and sensor is as short as possible, it is ensured that the accuracy of measurement.
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 outside 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 is sensed
The range of device 302 is 0.1-30MPa；High pressure atmosphere valve 303, low-pressure atmosphere valve 307 and vacuum meter protection valve 304
Using vacuum valve.
The certainty of measurement of measurement apparatus 3 is the pressure of 1Pa-30MPa.
The method that special gas charging device fills high-purity special gas is：
Step (1), vacuumize
After the pressure in outside shock tunnel gun barrel section is pumped to required vacuum by vacuum suction apparatus 1, close
High-pressure air operated valve 105, and vavuum pump atmosphere valve 103 is opened, realize the protection to vavuum pump 101；
Step (2), inflation
Special gas in special gas gas cylinder 201 is depressurized to by required pressure by pressure-reducing valve 202, charge valve is opened
204, after being charged to test requirements document pressure, close charge valve 204；
Step (3), measurement 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 meter protection valve 304；When needing measurement malleation, high pressure atmosphere valve 303 and vacuum meter protection valve 304 are closed, open high
Pressure pneumatic operated valve 301, low-pressure atmosphere valve 307；Before shock tunnel operation, high-pressure air operated valve 301 and vacuum meter protection are closed
Valve 304, opens high pressure atmosphere valve 303 and low-pressure atmosphere valve 307, protection vacuum meter 305 and low-pressure sensing
Gases at high pressure influence when device 306 is not put to the test；
Step (4), deflation
After shock tunnel end of run, open pneumatic vent valve 401 and deflated；Meanwhile, can be with manually opened bypass hand
Valve 402 is deflated manually.
The content not being described in detail in description of the invention 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 aerating device (2), measurement apparatus (3) and blowdown piping (4)；Wherein, vacuum suction apparatus (1), extraordinary gas
Body aerating device (2) and measurement apparatus (3) are respectively and fixedly installed to the same side of outside shock tunnel gun barrel section, blowdown piping
(4) it is fixedly mounted on the opposite side of outside shock tunnel gun barrel section；The vacuum suction apparatus (1) include vavuum pump (101), true
Empty pump valve (102), vavuum pump atmosphere valve (103), vacuum ripple flexible pipe (104) and high-pressure air operated valve (105)；Wherein, very
The air inlet of empty pump (101) is divided into two pipelines after being fixedly connected with vacuum pump valve (102), wherein a pipeline is big with vavuum pump
Gas communicating valve (103) is fixedly connected, and another pipeline is fixed with vacuum ripple flexible pipe (104) and high-pressure air operated valve (105) successively
Connection；The other end of high-pressure air operated valve (105) is fixedly connected with outside 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：
Described special gas aerating device (2) is including 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 outside 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：
Described measurement apparatus (3) include 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 outside 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 road 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：
Described blowdown piping (4) includes pneumatic vent valve (401), bypass deflation hand valve (402) and muffler (403)；Wherein, it is pneumatic
After vent valve (401) is in parallel with bypass deflation hand valve (402), one end is fixedly connected with outside 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：
Air inlet bore of the bore of described vacuum ripple flexible pipe (104) not less than vavuum pump (101)；High-pressure air operated valve (105)
Bore is not less than the connector bore of outside shock tunnel gun barrel section.
6. a kind of high-purity special gas charging device for shock tunnel according to claim 1, it is characterised in that：
Described vacuum meter (305) is thermal radiation vacuum gauge；The range of low-pressure sensor (306) is 0.1-0.15MPa；High pressure is passed
Sensor (302) range is 0.1-30MPa；High pressure atmosphere valve (303), low-pressure atmosphere valve (307) and vacuum meter
Protection valve (304) uses 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 certainty of measurement of described measurement apparatus (3) is the pressure of 1Pa-30MPa.
8., according to a kind of high-purity special gas charging device for shock tunnel that one of claim 1-7 is described, it is special
Levy and be：The method that special gas charging device fills high-purity special gas is：
Step (1), vacuumize
After the pressure in outside shock tunnel gun barrel section is pumped to required vacuum by vacuum suction apparatus (1), close high
Pressure pneumatic operated valve (105), and vavuum pump atmosphere valve (103) is opened, realize the protection to vavuum pump (101)；
Step (2), inflation
Special gas in special gas gas cylinder (201) is depressurized to by required pressure by pressure-reducing valve (202), charge valve is opened
(204) after, being charged to test requirements document pressure, charge valve (204) is closed；
Step (3), measurement 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 meter protects valve (304)；When needing measurement malleation, high pressure atmosphere valve (303) and vacuum meter protection valve are closed
(304) high-pressure air operated valve (301), low-pressure atmosphere valve (307), are opened；Before shock tunnel operation, high-pressure air operated valve is closed
(301) and vacuum meter protects valve (304), high pressure atmosphere valve (303) and low-pressure atmosphere valve (307) is opened；
Step (4), deflation
After shock tunnel end of run, open pneumatic vent valve (401) and deflated；Meanwhile, can be with manually opened bypass hand valve
(402) deflated manually.
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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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Cited By (5)
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| CN108278487A (en) * | 2017-12-22 | 2018-07-13 | 中国航天空气动力技术研究院 | A kind of switching device and air charging system for FREE-PISTON SHOCK TUNNEL compressed pipe |
| CN108398272A (en) * | 2017-12-14 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of fuel system and method for the experiment of shock tunnel super burn engine inlets |
| 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 |
| CN111366263A (en) * | 2020-01-21 | 2020-07-03 | 中国科学院力学研究所 | High-temperature calibration equipment and method for TDLAS temperature measurement based on shock tube |
| CN112985741A (en) * | 2021-02-07 | 2021-06-18 | 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398272A (en) * | 2017-12-14 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of fuel system and method for the experiment of shock tunnel super burn engine inlets |
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| CN111366263A (en) * | 2020-01-21 | 2020-07-03 | 中国科学院力学研究所 | High-temperature calibration equipment and method for TDLAS temperature measurement based on shock tube |
| CN111366263B (en) * | 2020-01-21 | 2021-03-02 | 中国科学院力学研究所 | High-temperature calibration equipment and method for TDLAS temperature measurement based on shock tube |
| CN112985741A (en) * | 2021-02-07 | 2021-06-18 | 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 |
| 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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|---|---|
| CN106768802B (en) | 2018-10-09 |
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