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

Abstract

The invention provides a cooling ventilation simulation device for testing high-altitude airborne equipment and a control method, the cooling ventilation simulation device comprises a gas source, a filter, a pressure reducing valve, a flow control unit, a refrigerator, a heater and a back pressure valve which are connected in sequence, the output end of the back pressure valve is connected with alow-pressure cabin, and the high-altitude airborne equipment is tested in the low-pressure cabin; wherein the air source is used for outputting high-pressure air, the filter is used for filtering particles and oily impurities in the air, the pressure reducing valve is used for reducing the pressure of the high-pressure air, the flow control unit is used for carrying out set flow control on the pressure-reduced air, and the refrigerator and the heater are used for adjusting the temperature of the air. And the back pressure valve is used for stabilizing the pressure difference between the cooling ventilation system and the low-pressure cabin. The cooling ventilation simulation device has the beneficial effects that a low-pressure cooling ventilation environment is provided for the low-pressure cabin through the ventilation device, so that a test environment is closer to a real working condition; moreover, the ventilation device provided by the invention can also realize controllable ventilation flow, pressure and temperature, so that the stability of a test environment is ensured.

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 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 using low-pressure environment simulation equipment. The specific simulation method is: the low-pressure environment simulation equipment has a low-pressure chamber, which simulates high-altitude environments at different altitudes by controlling internal pressure and temperature. [0004] Airborne equipment is often accompanied by a lot of heat during work, and its heat dissipation device requires cooling a...

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.

Images