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

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...

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.

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