Cooling ventilation simulation device and control method for high-altitude airborne equipment testing

A technology for cooling ventilation and airborne equipment, applied in aircraft component testing, control/regulation systems, non-electric variable control, etc., can solve problems such as uncontrollable temperature and flow, affecting test results, and failing to meet simulation requirements

Active Publication Date: 2022-08-02
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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  • Abstract
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AI Technical Summary

Problems solved by technology

The existing low-pressure environment simulation equipment is difficult to achieve a cooling and ventilation environment, which cannot meet the simulation requirements
[0005] Existing cooling and ventilation devices can only be used under normal pressure and are not designed for low-pressure environments. Therefore, their use in low-pressure environments will cause problems such as unstable system conditions and uncontrollable temperature and flow, which will seriously affect test results.

Method used

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  • Cooling ventilation simulation device and control method for high-altitude airborne equipment testing
  • Cooling ventilation simulation device and control method for high-altitude airborne equipment testing

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Embodiment Construction

[0028] In order to make those skilled in the art better understand the technical solutions of the present invention, the present application is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. .

[0029] like figure 1 Shown is a schematic diagram of the first embodiment of the application. In this embodiment, the high-altitude airborne equipment is tested in the low pressure chamber 8. The ventilation device of the application includes: an air source 1, a filter 2, a The pressure valve 3 , the flow control unit 4 , the refrigerator 5 , the heater 6 and the back pressure valve 7 , the output end of the back pressure valve 7 is connected to the low pressure chamber 8 .

[0030] The air source 1 is used to output high-pressure air, the filter 2 is used to filter out particles and oily impurities in the h...

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Abstract

The present application provides a cooling and ventilation simulation device and a control method for high-altitude airborne equipment testing, comprising: an air source, a filter, a pressure reducing valve, a flow control unit, a refrigerator, a heater and a back pressure valve connected in sequence, The output end of the back pressure valve is connected to the low-pressure cabin, and the high-altitude airborne equipment is tested in the low-pressure cabin; the air source is used to output high-pressure air, the filter is used to filter out particles and oily impurities in the air, and the pressure reducing valve is used to reduce the high-pressure air. The flow control unit is used to control the set flow of the decompressed air, the refrigerator and the heater are used to adjust the temperature of the air, and the back pressure valve is used to stabilize the pressure difference between the cooling ventilation system and the low pressure chamber. The beneficial effects of the present application are: the low-pressure cooling and ventilation environment is provided for the low-pressure chamber through the ventilation device of the present application, so that the test environment is closer to the real working condition; and the ventilation device of the present application can also realize the controllable flow, pressure and temperature of the ventilation, Ensure the stability of the test environment.

Description

technical field [0001] The present disclosure relates to the technical field of low-pressure environment simulation, in particular to a cooling ventilation simulation device and a control method for high-altitude airborne equipment testing. Background technique [0002] To test high-altitude airborne equipment on the ground, it is necessary to simulate the high-altitude, low-pressure and low-temperature environment to test its working performance in the high-altitude environment. [0003] This high-altitude, low-pressure and low-temperature environment is usually simulated by low-pressure environment simulation equipment. The specific simulation method is: the low-pressure environment simulation equipment has a low-pressure chamber, and the internal pressure and temperature are controlled to simulate high-altitude environments at different altitudes. [0004] Airborne equipment is often accompanied by a lot of heat during work engineering, and its cooling device needs the ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/60G05D27/02
CPCB64F5/60G05D27/02
Inventor 李国华刘洋洋邵静怡刘然王军伟张磊韩潇周盈付春雨富钰
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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