CN104502053A - Automatic inflation sealing system used for trisonic wind tunnel - Google Patents
Automatic inflation sealing system used for trisonic wind tunnel Download PDFInfo
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- CN104502053A CN104502053A CN201410554439.9A CN201410554439A CN104502053A CN 104502053 A CN104502053 A CN 104502053A CN 201410554439 A CN201410554439 A CN 201410554439A CN 104502053 A CN104502053 A CN 104502053A
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Abstract
The invention discloses an automatic inflation sealing system used for a trisonic wind tunnel. The system comprises an air inlet pipe, a first inflation branch, a second inflation branch, a gas collecting pipe, a deflation pipe, and a control device. The trisonic wind tunnel comprises a transition segment, a test segment, an over-expending segment, an over-expending segment adjusting sheet, and a flexible segment. The system can automatically operate according to process flow of inflation and deflation, saving inflation and deflation time of the inflation sealing system, improving wind tunnel test efficiency, and operation accuracy is greatly improved.
Description
Technical field
The present invention relates to gas-flow closure system, particularly a kind of automatic inflating sealing system moving or change parts for trisonic wind tunnel inside.
Background technology
Inner at trisonic wind tunnel, there are many parts that need move or change, as test section, fixed wall nozzle and ultra-expanded section etc., need to open wind-tunnel in the test preparatory stage, need mobile or change these parts, because wind-tunnel day-to-day test number of times is more, in order to reduce mobile or replacing construction, improve test efficiency, therefore, wind-tunnel more adopts gas-flow closure system.Traditional method adopts manual inflation and bleed air operation, namely when on-test, realizes inflation, after off-test, then realize venting by manual operation manually-operated gate by manually carrying out manually-operated gate switching manipulation to scene.And at present trisonic wind tunnel test is day by day various, adopt manually-operated mode, not only waste test setup time, and need arrange professional and operate, test efficiency reduces, and experimentation cost adds.Therefore be necessary gas-flow closure system to be designed to automatic mode, not only save cost, and improve test efficiency, and trisonic wind tunnel does not also have automatic inflating sealing system at present.
Summary of the invention
In order to solve the problem, the invention provides a kind of trisonic wind tunnel automatic inflating sealing system, described trisonic wind tunnel comprises transition section, test section, ultra-expanded section, ultra-expanded section adjustment sheet and telescopic section, described automatic inflating sealing system comprises: air inlet pipeline, the air intake opening of described air inlet pipeline is communicated with the gas outlet of source of the gas, and described air inlet pipeline sets gradually filtrator, the first hand stop valve, the first tensimeter, the first electromagnetic switch valve and the first pressure transducer along the air intake opening of described air inlet pipeline to the direction, gas outlet of described air inlet pipeline, first inflation along separate routes, described first inflation air intake opening is along separate routes communicated with the gas outlet of described air inlet pipeline, described first inflation gas outlet is along separate routes communicated to the gas-flow closure circle of described transition section, and described first inflation along separate routes sets gradually the second hand stop valve, the second electromagnetic switch valve, the first reduction valve, the second pressure transducer, the first solenoid directional control valve and the 3rd pressure transducer along described first inflation air intake opening along separate routes to described first inflation direction, gas outlet along separate routes, second inflation along separate routes, described second inflation air intake opening is along separate routes communicated with the gas outlet of described air inlet pipeline, and described second inflation along separate routes sets gradually the 3rd hand stop valve, the 3rd electromagnetic switch valve, the second reduction valve and the 4th pressure transducer along described second inflation air intake opening along separate routes to described second inflation direction, gas outlet along separate routes, discharge, the air intake opening and described second of described discharge is inflated gas outlet along separate routes and is communicated with, first gas outlet second solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described test section with the 5th pressure transducer, second gas outlet the 3rd solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described ultra-expanded section with the 6th pressure transducer, 3rd gas outlet the 4th solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of the 7th pressure transducer with described ultra-expanded section adjustment sheet, 4th gas outlet the 5th solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described telescopic section with the 8th pressure transducer, blowdown piping, first air intake opening of described blowdown piping is communicated with described 5th solenoid directional control valve with described first solenoid directional control valve, described second solenoid directional control valve, described 3rd solenoid directional control valve, described 4th solenoid directional control valve by pipeline, second air intake opening of described blowdown piping is communicated with the 5th gas outlet of described discharge by the 3rd electromagnetic switch valve, and the gas outlet of described blowdown piping is communicated with ambient atmosphere by pipeline, control device, with described first electromagnetic switch valve, described first pressure transducer, described second electromagnetic switch valve, described second pressure transducer, described first solenoid directional control valve, described 3rd pressure transducer, described 3rd electromagnetic switch valve, described 4th pressure transducer, described second solenoid directional control valve, described 5th pressure transducer, described 3rd solenoid directional control valve, described 6th pressure transducer, described 4th solenoid directional control valve, described 7th pressure transducer, described 5th solenoid directional control valve, described 8th pressure transducer is connected with described 3rd electromagnetic switch valve.
In automatic inflating sealing system as above, preferably, the gas outlet place of described blowdown piping is provided with exhaust box.
In automatic inflating sealing system as above, preferably, described automatic inflating sealing system also comprises: the first safety valve and the second safety valve; Described first safety valve is arranged in described first inflation along separate routes, and passes through pipeline communication with the first air intake opening of described blowdown piping, and between described second pressure transducer and described first solenoid directional control valve; Described second safety valve is arranged in described second inflation along separate routes, and passes through pipeline communication with the first air intake opening of described blowdown piping, and between described 4th pressure transducer and the air intake opening of described discharge.
In automatic inflating sealing system as above, preferably, described source of the gas comes from the gas that the pipeline before the main valve of described trisonic wind tunnel is carried.
In automatic inflating sealing system as above, preferably, described control device comprises: controller, the analog input channel AI of described controller and described first pressure transducer, described second electromagnetic switch valve, described second pressure transducer, described 3rd pressure transducer, described 4th pressure transducer, described 5th pressure transducer, described 6th pressure transducer, described 7th pressure transducer is connected with described 8th pressure transducer, the On-off signal passage DO of described controller and described first electromagnetic switch valve, described second electromagnetic switch valve, described first solenoid directional control valve, described 3rd electromagnetic switch valve, described second solenoid directional control valve, described 3rd solenoid directional control valve, described 4th solenoid directional control valve, described 5th solenoid directional control valve is connected with described 3rd electromagnetic switch valve, input block, is connected with described controller, to carry out man-machine interaction, and power supply unit, for described controller provides power supply.
In automatic inflating sealing system as above, preferably, described controller also passes through Profibus-DP bus communication model calling with the master control system of described trisonic wind tunnel.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
(1), wind tunnel air supply adopts multichannel to reduce pressure by the present invention, meet different seal parts pressure demand, adopt solenoid directional control valve to realize the switching of inflation and blowdown piping, and all valves, tensimeter, pressure transducer are integrated into a switch board inside, easy to operate, reliability is high.
(2), the present invention adopts programmable logic controller (PLC) PLC to carry out data acquisition to gas piping in gas-flow closure system and valve portion partial pressure sensor, electromagnetic switch valve and electromagnetic switch are controlled, automatic operation can be carried out by inflation and venting technological process, save the inflation of gas-flow closure system and deflation time, improve wind tunnel test efficiency, and drastically increase the accuracy of operation.
(3), the operation of gas-flow closure system for field can be realized by liquid crystal touch screen, and by PLC with Profibus-DP communication module, be connected with wind-tunnel master control system PLC, realize data upload and instruction issuing, thus realize this system remote and automatically control.Adopt this method of operating, save manpower, reduce experimentation cost.
Accompanying drawing explanation
The pipeline of a kind of trisonic wind tunnel automatic inflating sealing system that Fig. 1 provides for the embodiment of the present invention and valve partial schematic diagram;
The structural representation of a kind of control device that Fig. 2 provides for the embodiment of the present invention;
The inflation automatic flow schematic diagram of a kind of trisonic wind tunnel automatic inflating sealing system that Fig. 3 provides for the embodiment of the present invention;
The venting automatic flow schematic diagram of a kind of trisonic wind tunnel automatic inflating sealing system that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
See Fig. 1, embodiments provide a kind of trisonic wind tunnel automatic inflating sealing system, move for trisonic wind tunnel inside or change seal parts, after parts changed by wind-tunnel, before test is carried out, gap between parts need be adopted O-ring seal inflation realize sealing, after test completes, O-ring seal internal gas need be drained, make two parts separately, to change, wherein, trisonic wind tunnel comprises: transition section, test section, ultra-expanded section, ultra-expanded section adjustment sheet and telescopic section, the sealing of this automatic inflating comprises: air inlet pipeline, first inflation along separate routes, second inflation along separate routes, discharge, blowdown piping and control device.
Wherein, air inlet pipeline is for carrying trisonic wind tunnel sealing gas, its air intake opening is communicated with the gas outlet of source of the gas, and air inlet pipeline sets gradually filter F T1, the first hand stop valve VC2, the first tensimeter G1, the first electromagnetic switch valve V1 and the first pressure transducer P2 along its air intake opening to its direction, gas outlet.Preferably, source of the gas is the gas that the pipeline before the main valve of trisonic wind tunnel is carried, and particularly, the pipeline connection before the air intake opening of air inlet pipeline and the main valve of trisonic wind tunnel, namely gets gas from the pipeline between the main valve of trisonic wind tunnel.
First inflation is used for the transition section conveying sealing gas to trisonic wind tunnel along separate routes, its air intake opening is communicated with the gas outlet of air inlet pipeline, its gas outlet is communicated to the gas-flow closure circle of transition section, and the first inflation along separate routes sets gradually the second hand stop valve VC3, the second electromagnetic switch valve V2, the first reduction valve VR1, the second pressure transducer P3, the first solenoid directional control valve V4 and the 3rd pressure transducer P5 along its air intake opening to its direction, gas outlet;
Second inflation is used for discharge conveying gas along separate routes, its air intake opening is communicated with the gas outlet of air inlet pipeline, the gas outlet of air inlet pipeline and second air intake opening and first inflated along separate routes inflate air intake opening along separate routes and is formed threeway, inflates in shunt set gradually the 3rd hand stop valve VC4, the 3rd electromagnetic switch valve V3, the second reduction valve VR2 and the 4th pressure transducer P4 along its air intake opening to its direction, gas outlet second;
Discharge is used for coming from the second inflation gas and vapor permeation along separate routes, and mixed gas is delivered to respectively the test section of trisonic wind tunnel, ultra-expanded section, the gas-flow closure circle of ultra-expanded section adjustment sheet and telescopic section, its air intake opening and second is inflated gas outlet along separate routes and is communicated with, first gas outlet second solenoid directional control valve V5 of discharge is communicated with the gas-flow closure circle of test section with the 5th pressure transducer P6, second gas outlet the 3rd solenoid directional control valve V6 of discharge is communicated with the gas-flow closure circle of ultra-expanded section with the 6th pressure transducer P7, 3rd gas outlet the 4th solenoid directional control valve V7 of discharge is communicated with the gas-flow closure circle of ultra-expanded section adjustment sheet with the 7th pressure transducer P8, 4th gas outlet the 5th solenoid directional control valve V8 of discharge is communicated with the gas-flow closure circle of telescopic section with the 8th pressure transducer P9, in order to expand the scope of application of this automatic inflating sealing system, discharge also comprises the 6th gas outlet, is communicated with reserved opening by electromagnetic switch valve V10, namely as reserved branch road.
Blowdown piping is used for the transition section of trisonic wind tunnel after wind tunnel test terminates, test section, ultra-expanded section, in the gas-flow closure circle gas of ultra-expanded section adjustment sheet and telescopic section and discharge, gas is released, namely blowdown piping is the emptying branch road of venting, its first air intake opening is by pipeline and the first solenoid directional control valve V4, second solenoid directional control valve V5, 3rd solenoid directional control valve V6, 4th solenoid directional control valve V7 is communicated with the 5th solenoid directional control valve V8, second air intake opening of blowdown piping is communicated with the 5th gas outlet of discharge by the 3rd electromagnetic switch valve V9, the gas outlet of blowdown piping is communicated with ambient atmosphere by pipeline,
It should be noted that, " first ", " second " in above-mentioned ... " the 8th " is only used on word element, such as hand stop valve, reduction valve, electromagnetic switch valve, solenoid directional control valve, tensimeter and pressure transducer are distinguished, be not that it is limited, below the effect of element be described: arbitrary hand stop valve is used for manually opened or cuts out gas; Arbitrary reduction valve is used for gaseous tension to reduce to specified pressure; Arbitrary electromagnetic switch valve and arbitrary solenoid directional control valve are open and close or change the valve that gas opens flow direction under electrically acting on, and arbitrary electromagnetic switch valve is preferred 2/2-way valve, arbitrary solenoid directional control valve two position three-way valve; Arbitrary tensimeter and arbitrary pressure transducer are used for pressure and show.
For wind tunnel air supply pressure for 2MPa, the gas-flow closure circle place supply gas pressure of the transition section of wind-tunnel, test section, ultra-expanded section, ultra-expanded section adjustment sheet and telescopic section is described, the gas-flow closure circle supply gas pressure of transition section is 0.8 ~ 2.0MPa, be preferably 1.0MPa, the parts gas-flow closure circle place supply gas pressure of other four wind-tunnel is 0.8 ~ 1.2MPa, be preferably 0.8MPa, during application, this automatic inflating sealing system inner pressure relief valve output pressure scope should according to wind-tunnel seal member: gas-flow closure circle, required gas-flow closure pressure limit is selected.In reality, the model of reduction valve can select QTYa-L20; The model of electromagnetic switch valve can select Z2/2DCF6-0, and the model of solenoid directional control valve can select Z2/3DCF6-0, and aforementioned two kinds of solenoid valves all can be direct current 24V and control; The model of hand stop valve can select Y5704.2-91; Manometric model can select YB-150.BT; The model of pressure transducer can select YZD-2B, and it exports as 4-20mA, and the embodiment of the present invention does not limit the concrete model of aforementioned each valve, tensimeter and pressure transducer.
By arranging the first inflation shunt and the second inflation shunt, air inlet pipeline is reduced pressure, to meet the need of different sealing pressure (or the supply gas pressure at different gas-flow closure circle place), realize inflation and the switching abandoning pipeline by adopting solenoid directional control valve.Air inlet pipeline, the first inflation shunt, the second inflation shunt, discharge and blowdown piping are referred to as loading line and valve part, it is for realizing getting gas from pipeline before trisonic wind tunnel main valve, by gas decompression to sealing load, deliver gas to and specify gas-flow closure place.Implementation procedure is as follows: get gas from pipeline before wind-tunnel main valve, be connected to automatic inflating sealing system gas circuit entrance, by filter F T1, hand stop valve VC2, tensimeter G1, electromagnetic switch main valve V1, pressure transducer P1, gas circuit are divided into two-way: lead up to hand stop valve VC3, electromagnetic switch valve V2, reduction valve VR1, pressure transducer P3, safety valve VS1, solenoid directional control valve V4 and pressure transducer P5 to transition section gas-flow closure circle air feed; Another road manually stop valve VC4, electromagnetic switch valve V3, reduction valve VR2, pressure transducer P4, safety valve VS2 to discharge air feed, be connected with discharge six branch roads, wherein first four are connected to solenoid directional control valve and pressure transducer respectively, respectively to test section, ultra-expanded section, ultra-expanded section adjustment sheet, telescopic section gas-flow closure circle air feed, Article 5 branch road is the emptying branch road of venting, after wind tunnel test completes, through electromagnetic switch valve and exhaust box, by all gas-flow closure circles and internal system evacuate air, Article 6 branch road is reserved branch road.Following control device is called electric control system.
See Fig. 2, control device is used for carrying out data acquisition to the pressure transducer of loading line and valve part, controls (i.e. switching manipulation) to realize inflating the automatic operation with venting technological process to electromagnetic switch valve and solenoid directional control valve.Particularly, wherein, itself and the first electromagnetic switch valve V1, first pressure transducer P2, second electromagnetic switch valve V2, second pressure transducer P3, first solenoid directional control valve V4, 3rd pressure transducer P5, 3rd electromagnetic switch valve V3, 4th pressure transducer P4, second solenoid directional control valve V5, 5th pressure transducer P6, 3rd solenoid directional control valve V6, 6th pressure transducer P7, 4th solenoid directional control valve V7, 7th pressure transducer P8, 5th solenoid directional control valve V8, 8th pressure transducer P9 is connected with the 3rd electromagnetic switch valve V9, for gathering the first pressure transducer P2, second pressure transducer P3, 3rd pressure transducer P5, 4th pressure transducer P4, 5th pressure transducer P6, 6th pressure transducer P7, the data of the 7th pressure transducer P8 and the 8th pressure transducer P9 are to the first electromagnetic switch valve V1, second electromagnetic switch valve V2, first solenoid directional control valve V4, 3rd electromagnetic switch valve V3, second solenoid directional control valve V5, 3rd solenoid directional control valve V6, 4th solenoid directional control valve V7, the switch of the 5th solenoid directional control valve V8 and the 3rd electromagnetic switch valve V9 controls.
Particularly, control device comprises: controller, for carrying out automatic inflating and the venting of control realization automatic-sealed system to solenoid directional control valve, electromagnetic switch valve, in reality, carries out operation realize by working procedure.The analog input channel AI of controller is connected with the first pressure transducer, the second electromagnetic switch valve, the second pressure transducer, the 3rd pressure transducer, the 4th pressure transducer, the 5th pressure transducer, the 6th pressure transducer, the 7th pressure transducer and the 8th pressure transducer, and the On-off signal passage DO of controller is connected with the first electromagnetic switch valve, the second electromagnetic switch valve, the first solenoid directional control valve, the 3rd electromagnetic switch valve, the second solenoid directional control valve, the 3rd solenoid directional control valve, the 4th solenoid directional control valve, the 5th solenoid directional control valve and the 3rd electromagnetic switch valve;
Input block, is connected with controller, to carry out man-machine interaction, thus realizes the execute-in-place of automatic inflating sealing system; And
Power supply unit, for controller provides power supply, it comprises: direct supply PW1 and air switch QF1.
Electric control system middle controller, can be such as programmable logic controller (PLC) PLC, it is System Control Center, automatic inflating and the venting of automatic inflating sealing system is realized by working procedure, input media can be such as liquid crystal touch screen, for human users, air switch and direct supply are used for PLC and electromagnetic valve is powered, and PLC inside solidification program mainly comprises auto-reset function, automatic inflating function and automatic deflation function.
Pressure transducer output signal in gas-flow closure system is linked on programmable logic controller (PLC) PLC analog input channel AI and carries out data acquisition, and all electromagnetic switch valves and solenoid directional control valve are linked on PLC On-off signal passage DO and carry out switching manipulation, PLC inside solidification program, program is worked out by inflation and venting technological process, realizes gas piping and valve part automatic operation.Human-computer interaction interface is realized by liquid crystal touch screen, and liquid crystal touch screen inside solidification interface program, is communicated with PLC by telecommunication cable, realizes system for field operation by human-computer interaction interface.PLC, with Profibus-DP communication module, is connected with wind-tunnel master control system PLC, realizes data upload and instruction issuing, thus realizes the operation of this system remote.
In reality, programmable logic controller (PLC) PLC, can select the PLC that SIEMENS company produces, and model is CPU 226CN, and is configured with analog input AI module, and model is EM231.Liquid crystal touch screen, can select SIEMENS company to produce TP277.System PLC is also configured with Profibus-DP bus communication module EM277 and is connected with the S7-400 type PLC that wind-tunnel master control system configures, as the slave station of this wind-tunnel master control system configuration PLC.
In order to reduce atmospheric pipe at the noise will produced in gas purge, at the gas outlet place of blowdown piping, exhaust box X is installed.
In order to improve the security of automatic inflating sealing system, after pressure in pipeline exceedes specified pressure, this system energy automatic deflation reduces pressure with protection system, i.e. overpressure protection, and this automatic inflating sealing system also comprises: the first safety valve VS1 and the second safety valve VS2; First safety valve VS1 is arranged in the first inflation along separate routes, and passes through pipeline communication with the first air intake opening of blowdown piping, and between the second pressure transducer P3 and the first solenoid directional control valve V4; Second safety valve VS2 is arranged in the second inflation along separate routes, and passes through pipeline communication with the first air intake opening of blowdown piping, and between the 4th pressure transducer P4 and the air intake opening of discharge.
The loading line that automatic inflating sealing system comprises and valve part and electric control system are all arranged on a switch board inside, carry out integrated design and making.
Below the automatic inflating functional sequence of the automatic inflating sealing system that the embodiment of the present invention provides and the flow process of automatic deflation function are described:
System aeration step is as follows: first closed by VC1, VC2, V3 tri-hand stop valves, connects gas-flow closure control desk power supply, power supply key switch is got to " power supply " position, system electrification.Before test, artificial order opens V1, V2 and V3 hand stop valve, and by performing automatic inflating flow process shown in Fig. 3, system inflation is complete.
System deflation step is as follows: by performing automatic deflation flow process shown in Fig. 4, after treating that venting is complete, and artificial orderly close-down V1, V2 and V3 hand stop valve.
In sum, the beneficial effect of the embodiment of the present invention is as follows:
(1) wind tunnel air supply adopts multichannel to reduce pressure by the present invention, meet different seal parts pressure demand, adopt solenoid directional control valve to realize the switching of inflation and blowdown piping, and all valves, tensimeter, pressure transducer are integrated into a switch board inside, easy to operate, reliability is high.
(2) the present invention adopts programmable logic controller (PLC) PLC to carry out data acquisition to gas piping in gas-flow closure system and valve portion partial pressure sensor, electromagnetic switch valve and electromagnetic switch are controlled, automatic operation can be carried out by inflation and venting technological process, save the inflation of gas-flow closure system and deflation time, improve wind tunnel test efficiency, and drastically increase the accuracy of operation.
(3) operation of gas-flow closure system for field can be realized by liquid crystal touch screen, and by PLC with Profibus-DP communication module, be connected with wind-tunnel master control system PLC, realize data upload and instruction issuing, thus realize this system remote and automatically control.Adopt this method of operating, save manpower, reduce experimentation cost.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (6)
1. a trisonic wind tunnel automatic inflating sealing system, described trisonic wind tunnel comprises transition section, test section, ultra-expanded section, ultra-expanded section adjustment sheet and telescopic section, it is characterized in that, described automatic inflating sealing system comprises:
Air inlet pipeline, the air intake opening of described air inlet pipeline is communicated with the gas outlet of source of the gas, and described air inlet pipeline sets gradually filtrator, the first hand stop valve, the first tensimeter, the first electromagnetic switch valve and the first pressure transducer along the air intake opening of described air inlet pipeline to the direction, gas outlet of described air inlet pipeline;
First inflation along separate routes, described first inflation air intake opening is along separate routes communicated with the gas outlet of described air inlet pipeline, described first inflation gas outlet is along separate routes communicated to the gas-flow closure circle of described transition section, and described first inflation along separate routes sets gradually the second hand stop valve, the second electromagnetic switch valve, the first reduction valve, the second pressure transducer, the first solenoid directional control valve and the 3rd pressure transducer along described first inflation air intake opening along separate routes to described first inflation direction, gas outlet along separate routes;
Second inflation along separate routes, described second inflation air intake opening is along separate routes communicated with the gas outlet of described air inlet pipeline, and described second inflation along separate routes sets gradually the 3rd hand stop valve, the 3rd electromagnetic switch valve, the second reduction valve and the 4th pressure transducer along described second inflation air intake opening along separate routes to described second inflation direction, gas outlet along separate routes;
Discharge, the air intake opening and described second of described discharge is inflated gas outlet along separate routes and is communicated with, first gas outlet second solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described test section with the 5th pressure transducer, second gas outlet the 3rd solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described ultra-expanded section with the 6th pressure transducer, 3rd gas outlet the 4th solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of the 7th pressure transducer with described ultra-expanded section adjustment sheet, 4th gas outlet the 5th solenoid directional control valve of described discharge is communicated with the gas-flow closure circle of described telescopic section with the 8th pressure transducer,
Blowdown piping, first air intake opening of described blowdown piping is communicated with described 5th solenoid directional control valve with described first solenoid directional control valve, described second solenoid directional control valve, described 3rd solenoid directional control valve, described 4th solenoid directional control valve by pipeline, second air intake opening of described blowdown piping is communicated with the 5th gas outlet of described discharge by the 3rd electromagnetic switch valve, and the gas outlet of described blowdown piping is communicated with ambient atmosphere by pipeline;
Control device, with described first electromagnetic switch valve, described first pressure transducer, described second electromagnetic switch valve, described second pressure transducer, described first solenoid directional control valve, described 3rd pressure transducer, described 3rd electromagnetic switch valve, described 4th pressure transducer, described second solenoid directional control valve, described 5th pressure transducer, described 3rd solenoid directional control valve, described 6th pressure transducer, described 4th solenoid directional control valve, described 7th pressure transducer, described 5th solenoid directional control valve, described 8th pressure transducer is connected with described 3rd electromagnetic switch valve.
2. automatic inflating sealing system according to claim 1, is characterized in that, the gas outlet place of described blowdown piping is provided with exhaust box.
3. automatic inflating sealing system according to claim 1, is characterized in that, described automatic inflating sealing system also comprises: the first safety valve and the second safety valve;
Described first safety valve is arranged in described first inflation along separate routes, and passes through pipeline communication with the first air intake opening of described blowdown piping, and between described second pressure transducer and described first solenoid directional control valve;
Described second safety valve is arranged in described second inflation along separate routes, and passes through pipeline communication with the first air intake opening of described blowdown piping, and between described 4th pressure transducer and the air intake opening of described discharge.
4. automatic inflating sealing system according to claim 1, is characterized in that, described source of the gas comes from the gas that the pipeline before the main valve of described trisonic wind tunnel is carried.
5. automatic inflating sealing system according to claim 1, is characterized in that, described control device comprises:
Controller, the analog input channel AI of described controller and described first pressure transducer, described second electromagnetic switch valve, described second pressure transducer, described 3rd pressure transducer, described 4th pressure transducer, described 5th pressure transducer, described 6th pressure transducer, described 7th pressure transducer is connected with described 8th pressure transducer, the On-off signal passage DO of described controller and described first electromagnetic switch valve, described second electromagnetic switch valve, described first solenoid directional control valve, described 3rd electromagnetic switch valve, described second solenoid directional control valve, described 3rd solenoid directional control valve, described 4th solenoid directional control valve, described 5th solenoid directional control valve is connected with described 3rd electromagnetic switch valve,
Input block, is connected with described controller, to carry out man-machine interaction; And
Power supply unit, for described controller provides power supply.
6. automatic inflating sealing system according to claim 5, is characterized in that, described controller also passes through Profibus-DP bus communication model calling with the master control system of described trisonic wind tunnel.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006842A (en) * | 2019-11-29 | 2020-04-14 | 中国航天空气动力技术研究院 | Novel inflatable sealing system and method for wind tunnel test |
| CN112611540A (en) * | 2020-12-30 | 2021-04-06 | 中国航天空气动力技术研究院 | Flexible inflation wind tunnel test model pressure self-adaptive adjusting device and method |
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| CN104502053B (en) | 2017-04-12 |
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