CN208620676U - The testing equipment of air injection enthalpy-increasing compressor - Google Patents
The testing equipment of air injection enthalpy-increasing compressor Download PDFInfo
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- CN208620676U CN208620676U CN201821107432.2U CN201821107432U CN208620676U CN 208620676 U CN208620676 U CN 208620676U CN 201821107432 U CN201821107432 U CN 201821107432U CN 208620676 U CN208620676 U CN 208620676U
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- air injection
- injection enthalpy
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Abstract
The utility model relates to a kind of testing equipments of air injection enthalpy-increasing compressor.A kind of testing equipment of air injection enthalpy-increasing compressor described in the utility model, including air-conditioning system and cooling water system；Air-conditioning system includes passing sequentially through condenser, expansion valve and the evaporator that refrigerant pipeline is connect with compressor to be tested, air-conditioning system further includes air injection enthalpy-increasing circuit, and air injection enthalpy-increasing circuit includes the air injection enthalpy-increasing refrigerant pipeline of suction hole among the access compressor to be tested drawn on refrigerant pipeline between condenser and expansion valve；Cooling water system includes the cooling water pipeline for sequentially passing through the condenser and the evaporator.The testing equipment of air injection enthalpy-increasing compressor described in the utility model can analog compression machine be in the operating status under air injection enthalpy-increasing operating condition, save the experimentation cost of compressor, improve the test efficiency of compressor.
Description
Technical field
The utility model relates to the testing equipment of compressor, the test more particularly to a kind of air injection enthalpy-increasing compressor is set
It is standby.
Background technique
As shown in FIG. 1, FIG. 1 is the compressor of air conditioner experimental facilities of the prior art, including sequentially connected cold with compressor
Condenser, expansion valve and evaporator further include the cooling circulating water for sequentially passing through condenser and evaporator, in the inlet and outlet of compressor
It is respectively equipped with pressure and temperature sensor, however, with air-conditioning equipment, room is especially worked as in the especially development of Compressor Technology
When outer temperature is very low, the return-air amount of the decline of outdoor unit heat-exchange capacity, the normal gas returning port of compressor is reduced, compressor horsepower drop
It is low, best effects cannot be played, but refrigerant gas, i.e. air injection enthalpy-increasing technology are supplemented by intermediate pressure return-air jet port, thus
Increasing compressor air-discharging amount, the circularly cooling dosage of heat exchanger indoor unit heating increases, realize that heating capacity increases, and it is existing
Experimental facilities can not simulate this operating condition of air injection enthalpy-increasing, and in the prior art, be lower than zero degrees celsius in simulation outdoor temperature
When, the cooling water across evaporator further decreases temperature, the phenomenon that generating icing, to make test that can not carry out, significantly
Limit the application range of testing equipment.
Utility model content
Based on this, the purpose of the utility model is to provide a kind of testing equipments of air injection enthalpy-increasing compressor, with energy
The air injection enthalpy-increasing technology of enough analog compression machines, and the operating condition under the outer cryogenic conditions of energy simulating chamber.
The utility model is achieved by the following scheme:
A kind of testing equipment of air injection enthalpy-increasing compressor, including air-conditioning system and cooling water system；
The air-conditioning system includes passing sequentially through condenser, expansion valve and the steaming that refrigerant pipeline is connect with compressor to be tested
Device is sent out, the air-conditioning system further includes air injection enthalpy-increasing circuit, and the air injection enthalpy-increasing circuit is included in the condenser and described swollen
The air injection enthalpy-increasing refrigerant pipeline of suction hole among the access compressor to be tested drawn on refrigerant pipeline between swollen valve；
The cooling water system includes the cooling water pipeline for sequentially passing through the condenser and the evaporator.
The testing equipment of air injection enthalpy-increasing compressor described in the utility model, can analog compression machine be in air injection enthalpy-increasing work
Working under condition realizes the air injection enthalpy-increasing test of compressor, saves the experimentation cost of compressor, improve compression
The test efficiency of machine.
It further, further include plate heat exchanger in the air injection enthalpy-increasing circuit；
The cooling water system further includes heat exchange pipeline, and the heat exchange pipeline is in the outlet and the steaming of the condenser
The pipeline that one section drawn in the cooling water pipeline between the entrance of device passes through plate heat exchanger is sent out, the heat exchange pipeline passes through board-like
After heat exchanger, converge with the cooling water pipeline for passing through the evaporator；
The air injection enthalpy-increasing refrigerant pipeline passes through the cooling water in the plate heat exchanger, with the heat exchange pipeline and carries out heat
Exchange.
The cooling water that heat is absorbed from condenser and low-temp low-pressure liquid refrigerants are carried out hot friendship by the plate heat exchanger
It changes, refrigerant is heated.
Further, the cooling water pipeline is located at the evaporator inlet side equipped with inlet valve, the cooling water pipeline
Outlet valve is equipped with positioned at the evaporator outlet side；
The cooling water pipeline further includes evaporator bypass duct, the entrance of the evaporator bypass duct be located at it is described into
The water inlet end of water valve, the outlet of bypass duct are located at the water outlet of the outlet valve, and the evaporator bypass duct is equipped with side
Road valve.
When simulating ultra-low temperature surroundings, make cooling water by bypass valve without that can prevent cooling water from existing by evaporator
Icing phenomenon occurs when into evaporator, meanwhile, it is suitable for the testing equipment of the utility model air injection enthalpy-increasing compressor ultralow
Warm environment.
Further, the bypass valve is motor-driven valve.
Further, the cooling water pipeline, which is located on the pipeline of the evaporator and the outlet valve, is additionally provided with draining
Pipe, the drainpipe are equipped with drain valve.
Further, control valve is additionally provided on the air injection enthalpy-increasing refrigerant pipeline, the control valve is regulating valve.
Pass through the adjustable cold medium flux into air injection enthalpy-increasing refrigerant pipeline of control valve.
It further, further include parameter detecting system；
The parameter detecting system includes the compressor air suction of the compressor air suction end setting to be tested on the refrigerant pipeline
Temperature sensor and suction pressure of compressor sensor further include being located at compressor air-discharging end to be tested on refrigerant pipeline to be arranged
Compressor exhaust temperature sensor and compressor discharge pressure sensor, and wait try on the air injection enthalpy-increasing refrigerant pipeline
Test the tonifying Qi fluid infusion pressure sensor and tonifying Qi fluid replacement temperature sensor of suction hole arrival end setting among compressor.
It further, further include controller；
The controller receives the parameter detecting system parameter detected, is sent to screen and shows.
In order to better understand and implement, according to the present invention will be described in detail below with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is prior art compressor testing equipment system structure diagram；
Fig. 2 is the testing equipment system structure diagram of the utility model air injection enthalpy-increasing compressor.
Specific embodiment
The testing equipment of the utility model air injection enthalpy-increasing compressor can be used for simulating under -25 DEG C to 25 DEG C environment, compression
The operating condition of machine, as shown in Fig. 2, Fig. 2 is the system construction drawing of the testing equipment of the utility model air injection enthalpy-increasing compressor, packet
Include air-conditioning system and cooling water system, wherein the major loop of air-conditioning system includes being sequentially connected with compressor 1 by refrigerant pipeline
Condenser 2, expansion valve 4 and evaporator 3, in major loop, also access an air injection enthalpy-increasing circuit, air injection enthalpy-increasing circuit be
The refrigerant pipeline of the intermediate suction hole for the access compressor 1 drawn on refrigerant pipeline between expansion valve 4 and condenser 2.
Wherein, compressor air suction temperature sensor and compressor air suction are equipped on entering the refrigerant pipeline before compressor 1
Pressure sensor is equipped with compressor exhaust temperature sensor and Compressor Discharge Pressure on the refrigerant pipeline that compressor 1 exports
Sensor is equipped with tonifying Qi fluid infusion pressure sensor on the air injection enthalpy-increasing refrigerant pipeline before the intermediate suction hole entrance of compressor 1
With tonifying Qi fluid replacement temperature sensor, above-mentioned temperature sensor and pressure sensor can be the instrument shown on the spot, can also be
Intelligence instrument with output function, connect with controller, and detected temperature parameter and pressure parameter are sent to controller,
It is shown so that controller is controlled or exported to display screen.
The refrigerant pipeline in air injection enthalpy-increasing circuit also extends through plate heat exchanger 6 before the intermediate suction hole for entering compressor 1,
Wherein, the cooling after plate heat exchanger 6 is used to heat by the low-temp low-pressure liquid refrigerants in air injection enthalpy-increasing circuit and by condenser 2
Water carries out heat exchange, to promote the refrigerant temperature in air injection enthalpy-increasing refrigerant pipeline, forms the refrigerant of gas-liquid state.In plate-type heat-exchange
Before device 6, air injection enthalpy-increasing circuit control valve 7 is additionally provided in air injection enthalpy-increasing circuit, for control the unlatching in air injection enthalpy-increasing circuit with
It closes, can also control in air injection enthalpy-increasing circuit, the flow of refrigerant, air injection enthalpy-increasing circuit control valve 7 can be two kinds of on or off
State can also be the intermediate state for having certain aperture, and air injection enthalpy-increasing circuit control valve 7 can be hand-operated valve, can also be electricity
Dynamic valve, when air injection enthalpy-increasing circuit control valve 7 is motor-driven valve, user can opening or closing by controller control valve door, also
It can control its aperture, and control the flow of refrigerant in air injection enthalpy-increasing circuit by its aperture, controller can also be by its aperture
It is sent on screen and shows.
After the major loop pipeline of cooling water system passes through condenser 2, by automatic control water valve 8 into evaporator 3, and
After evaporator 3, enter circulation through return pipe.Wherein, inlet valve is equipped in the side of 3 entrance of cooling water pipeline evaporator
10, the side that evaporator 3 exports is equipped with outlet valve 11, is additionally provided with evaporator bypass duct, and the entrance of bypass duct is located at water inlet
The water inlet end of valve 10, the outlet of bypass duct are located at the water outlet of outlet valve 11, and bypass duct is equipped with bypass valve 9.It is bypassing
Valve 9 is closed, and when inlet valve 10 and outlet valve 11 are opened, cooling water enters evaporator 3 through inlet valve 10, in 3 inside quilt of evaporator
After absorbing heat, enter water return pipeline through outlet valve 11；It is opened in bypass valve 9, it is cooling when inlet valve 10 and outlet valve 12 are closed
Water is not passed through evaporator, but directly from bypass duct after bypass valve 9, flow into water return pipeline.It is located in cooling water pipeline and steams
The pipeline section between device 3 and outlet valve 11 is sent out, drainpipe is additionally provided with, drainpipe is equipped with drain valve 12, wherein automatic control water valve
8, bypass valve 9, inlet valve 10, outlet valve 11 and drain valve 12 can be on or off two states, and automatic control water valve 8 can be with
To there is an intermediate state of certain aperture, automatic control water valve 8, bypass valve 9, inlet valve 10, outlet valve 11 and drain valve 12 can be with
It is hand-operated valve, can also be motor-driven valve, any one valve is in bypass valve 9, inlet valve 10, outlet valve 11 and drain valve 12
When motor-driven valve, user can opening or closing by controller control valve door, controller can also be by the switch state of valve
Screen is sent to show.
Plate heat exchanger 6 is by the low-temp low-pressure liquid refrigerants in air injection enthalpy-increasing circuit and by the cooling after the heating of condenser 2
Water carries out heat exchange, is going out by the condenser in cooling water pipe to promote the refrigerant temperature in air injection enthalpy-increasing refrigerant pipeline
Mouth draws heat exchange pipeline to complete with one end water pipe among the water inlet end of automatic control water valve 8, and heat exchange pipeline passes through plate
After formula heat exchanger 6, enter circulation into return pipe.After passing through plate heat exchanger 6, into the segment pipe before water return pipeline
In, it is additionally provided with heat exchanger tube outlet valve 13, heat exchanger tube outlet valve 13 is used to control the water flow of heat exchanger tube, heat exchanger tube outlet valve 13
It can be on or off two states, can also be the intermediate state for having certain aperture, heat exchanger tube outlet valve 13 can be hand-operated valve,
It can also be motor-driven valve, when heat exchanger tube outlet valve 13 is motor-driven valve, user can play on or off by controller control valve door
It closes, its aperture can also be controlled, and control the flow of cooling water in heat exchanger tube by its aperture, controller can also be by its aperture
It is sent on screen and shows.
The testing equipment of the utility model air injection enthalpy-increasing compressor can be applied to the test of the compressor under different operating conditions, normal
Operating condition is advised, that is, does not need air injection enthalpy-increasing, when under normal temperature conditions, the testing equipment of the utility model air injection enthalpy-increasing compressor
The course of work are as follows:
Air injection enthalpy-increasing circuit is closed by closing air injection enthalpy-increasing circuit control valve, closes evaporator by closing bypass valve 9
Bypass duct, at this point, automatic control water valve 8, inlet valve 10 and outlet valve 11 are in the open state, drain valve 12, which is in, closes shape
State, heat exchanger tube outlet valve 13 are in close state, the circulation sequence of refrigerant are as follows: high-temperature low-pressure gaseous coolant pressurizes through compressor 1
Afterwards, high pressure gaseous refrigerant is formed, high temperature and pressure refrigerant liquefies after condenser 2 as low-temp low-pressure liquid refrigerants, simultaneously
Heat is discharged, low-temp low-pressure liquid refrigerants is after expansion valve 4, and into evaporator 3, gasification forms high-temperature low-pressure gaseous coolant,
Heat is absorbed simultaneously, high-temperature low-pressure gaseous coolant enters compressor 1, and circuits sequentially the above process.The circulation sequence of cooling water
Are as follows: after low-temperature cooling water flows through condenser 2, the heat that cooling medium liquefaction discharges in absorptive condenser 2 becomes high temperature water flow, high temperature
Water flow along cooling water pipe successively pass through automatic control water valve 8 and inlet valve 10 after enter in evaporator 3, and by cold in evaporator 3
Medium gasization absorbs heat, becomes low-temperature cooling water again, and low-temperature cooling water passes through outlet valve 11 and enters water return pipeline, followed
Ring.
Needing air injection enthalpy-increasing, when under normal temperature conditions, the testing equipment of the utility model air injection enthalpy-increasing compressor
The course of work are as follows:
Evaporator bypass duct is closed by closing bypass valve 9, at this point, automatic control water valve 8, inlet valve 10 and outlet valve
11 is in the open state, and air injection enthalpy-increasing circuit control valve 7 is in the open state, and drain valve 12 is in close state, and heat exchanger tube goes out
Water valve 13 is in the open state, the circulation sequence of refrigerant are as follows: high-temperature low-pressure gaseous coolant forms high temperature after the pressurization of compressor 1
High-pressure gaseous refrigerant, high temperature and pressure refrigerant liquefies after condenser 2 as low-temp low-pressure liquid refrigerants, while discharging heat, portion
Divide the refrigerant of low-temp low-pressure liquid after expansion valve 4, into evaporator 3, gasification forms high-temperature low-pressure gaseous coolant, inhales simultaneously
Heat is received, high-temperature low-pressure gaseous coolant enters compressor 1, and the refrigerant of another part low-temp low-pressure liquid passes through air injection enthalpy-increasing circuit
After control valve 7 and plate heat exchanger 6, the higher refrigerant of formation temperature, and enter the intermediate suction hole of compressor 1, through compressor 1
After pressurization, high pressure gaseous refrigerant is formed, and circuit sequentially the above process.The circulation sequence of cooling water are as follows: low-temperature cooling water
After flowing through condenser 2, the heat that cooling medium liquefaction discharges in absorptive condenser 2 becomes high temperature water flow, and part high temperature water flow is along cooling
Water pipe enters in evaporator 3 after successively passing through automatic control water valve 8 and inlet valve 10, and is absorbed by refrigerant gasification in evaporator 3
Heat, becomes low-temperature cooling water again, and low-temperature cooling water passes through outlet valve 11 and enters water return pipeline, another part high temperature water flow warp
It crosses plate heat exchanger 6 to exchange heat with the refrigerant in air injection enthalpy-increasing circuit, forms low temperature water flow, and pass through heat exchanger tube outlet valve 13
Afterwards, it into water return pipeline, is recycled.
Under this working method, the cold medium flux in air injection enthalpy-increasing circuit can be adjusted by air injection enthalpy-increasing circuit control valve 7,
The water flow for flowing through evaporator 3 and plate heat exchanger 6 can be adjusted by adjusting automatic control water valve 8 and heat exchanger tube outlet valve 13,
And control the flow velocity for flowing through the water of plate heat exchanger 6.
Needing air injection enthalpy-increasing, and when under the conditions of cryogenic temperature, the test of the utility model air injection enthalpy-increasing compressor
The course of work of equipment are as follows:
The cooling water pipeline for flowing through evaporator 3 is closed by closing inlet valve 10 and the closing of outlet valve 11, it is residual to prevent
The water freezing in the cooling water pipeline for flowing through evaporator 3 is stayed in, drain valve 12 is opened, to empty the moisture in pipeline, is opened other
Road valve 9 is to open the bypass duct of evaporator 3, at this point, automatic control water valve 8 is in the open state, the control of air injection enthalpy-increasing circuit
Valve 7 is in the open state, and drain valve 12 is in close state, and heat exchanger tube outlet valve 13 is in the open state, and the circulation of refrigerant is suitable
Sequence are as follows: high-temperature low-pressure gaseous coolant forms high pressure gaseous refrigerant, high temperature and pressure refrigerant is through being subcooled after the pressurization of compressor 1
It after condenser 2, liquefies as low-temp low-pressure liquid refrigerants, while discharging heat, the refrigerant of part low-temp low-pressure liquid passes through expansion valve 4
Afterwards, into evaporator 3, gasification forms high-temperature low-pressure gaseous coolant, while absorbing heat, and high-temperature low-pressure gaseous coolant enters compression
Machine 1, the refrigerant of another part low-temp low-pressure liquid is after air injection enthalpy-increasing circuit control valve 7 and plate heat exchanger 6, formation temperature
Higher refrigerant, and enter the intermediate suction hole of compressor 1, after the pressurization of compressor 1, high pressure gaseous refrigerant is formed, and
Circuit sequentially the above process.The circulation sequence of cooling water are as follows: cold in absorptive condenser 2 after low-temperature cooling water flows through condenser 2
Matchmaker is liquefied the heat of release, becomes high temperature water flow, after part high temperature water flow successively passes through automatic control water valve 8 along cooling water pipe,
Under the influence of ambient temperature, become low temperature water flow, and water return pipeline, another part high temperature are entered by evaporator bypass valve 9
Water flow exchanges heat by plate heat exchanger 6 with the refrigerant in air injection enthalpy-increasing circuit, forms low temperature water flow, and go out by heat exchanger tube
After water valve 13, into water return pipeline, recycled.
Under this working method, the cold medium flux in air injection enthalpy-increasing circuit can be adjusted by air injection enthalpy-increasing circuit control valve 7,
The water flow for flowing through plate heat exchanger 6 can be adjusted by adjusting heat exchanger tube outlet valve 13, and controls the water for flowing through plate heat exchanger 6
Flow velocity.
In above-mentioned three kinds of working methods, user manually or electrically controls above-mentioned valve, adjusts refrigerant or cooling water
Flowing, to complete to test the performance of compressor under different operating conditions, and by compressor air suction temperature sensor, compression
Machine inspiratory pressure sensor, compressor exhaust temperature sensor, compressor discharge pressure sensor, tonifying Qi fluid infusion pressure sensor
With the parameters such as tonifying Qi fluid replacement temperature sensor, treats test compression machine and carry out detailed test, obtain the test under different operating conditions
As a result.
The testing equipment of the utility model air injection enthalpy-increasing compressor just can spray compressor by a set of equipment
Performance in gas increasing enthalpy technology is tested, and can also be carried out in this operating condition under outdoor condition of ultralow temperature to compressor
Test, and test result can easily be observed, experimentation cost is saved, test efficiency is improved.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (8)
1. a kind of testing equipment of air injection enthalpy-increasing compressor, it is characterised in that:
Including air-conditioning system and cooling water system；
The air-conditioning system includes passing sequentially through condenser, expansion valve and the evaporation that refrigerant pipeline is connect with compressor to be tested
Device, the air-conditioning system further include air injection enthalpy-increasing circuit, and the air injection enthalpy-increasing circuit is included in the condenser and the expansion
The air injection enthalpy-increasing refrigerant pipeline of suction hole among the access compressor to be tested drawn on refrigerant pipeline between valve；
The cooling water system includes the cooling water pipeline for sequentially passing through the condenser and the evaporator.
2. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 1, it is characterised in that:
It further include plate heat exchanger in the air injection enthalpy-increasing circuit；
The cooling water system further includes heat exchange pipeline, and the heat exchange pipeline is the outlet and the evaporator in the condenser
Entrance between cooling water pipeline in draw the one section pipeline for passing through plate heat exchanger, the heat exchange pipeline passes through plate-type heat-exchange
After device, converge with the cooling water pipeline for passing through the evaporator；
The air injection enthalpy-increasing refrigerant pipeline passes through the cooling water in the plate heat exchanger, with the heat exchange pipeline and carries out hot friendship
It changes.
3. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 2, it is characterised in that:
The cooling water pipeline is located at the evaporator inlet side equipped with inlet valve, and the cooling water pipeline is located at the evaporator
Outlet side is equipped with outlet valve；
The cooling water pipeline further includes evaporator bypass duct, and the entrance of the evaporator bypass duct is located at the inlet valve
Water inlet end, bypass duct outlet be located at the outlet valve water outlet, the evaporator bypass duct be equipped with bypass valve.
4. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 3, it is characterised in that:
The bypass valve is motor-driven valve.
5. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 3, it is characterised in that:
The cooling water pipeline, which is located on the pipeline of the evaporator and the outlet valve, is additionally provided with drainpipe, on the drainpipe
Equipped with drain valve.
6. a kind of testing equipment of air injection enthalpy-increasing compressor according to any one of claims 1-4, it is characterised in that:
Control valve is additionally provided on the air injection enthalpy-increasing refrigerant pipeline, the control valve is regulating valve.
7. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 1, it is characterised in that:
It further include parameter detecting system；
The parameter detecting system includes the compressor air suction temperature of the compressor air suction end setting to be tested on the refrigerant pipeline
Sensor and suction pressure of compressor sensor further include the compression of the compressor air-discharging end setting to be tested on the refrigerant pipeline
Machine exhaust gas temperature sensor and compressor discharge pressure sensor, and it is located at pressure to be tested on the air injection enthalpy-increasing refrigerant pipeline
The tonifying Qi fluid infusion pressure sensor and tonifying Qi fluid replacement temperature sensor of suction hole arrival end setting among contracting machine.
8. a kind of testing equipment of air injection enthalpy-increasing compressor according to claim 7, it is characterised in that:
It further include controller；
The controller receives the parameter detecting system parameter detected, is sent to screen and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821107432.2U CN208620676U (en) | 2018-07-12 | 2018-07-12 | The testing equipment of air injection enthalpy-increasing compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107432.2U CN208620676U (en) | 2018-07-12 | 2018-07-12 | The testing equipment of air injection enthalpy-increasing compressor |
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| CN208620676U true CN208620676U (en) | 2019-03-19 |
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| CN201821107432.2U Active CN208620676U (en) | 2018-07-12 | 2018-07-12 | The testing equipment of air injection enthalpy-increasing compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166514A (en) * | 2021-11-26 | 2022-03-11 | 中国北方发动机研究所(天津) | Test system and test method for simulating plateau environment expansion valve cooling liquid steam escape |
-
2018
- 2018-07-12 CN CN201821107432.2U patent/CN208620676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166514A (en) * | 2021-11-26 | 2022-03-11 | 中国北方发动机研究所(天津) | Test system and test method for simulating plateau environment expansion valve cooling liquid steam escape |
| CN114166514B (en) * | 2021-11-26 | 2023-07-25 | 中国北方发动机研究所(天津) | Test system and test method for simulating plateau environment expansion valve cooling liquid steam escape |
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