Large-temperature-zone refrigerating device for satellite normal-pressure thermal test

Abstract

The invention discloses a large-temperature-zone refrigerating device and method for a satellite normal-pressure thermal test. The large-temperature-zone refrigerating device for the satellite normal-pressure thermal test disclosed by the invention comprises a nitrogen system, a fan inside a box, a control device, a cascade refrigerating system, a normal-pressure thermal test box and a pressure-relief air interchanger, wherein the control device controls the nitrogen system, the fan inside the box and the cascade refrigerating system to realize refrigerating; and the control device controls the pressure-relief air interchanger to realize pressure stabilization and air interchanging in the normal-pressure thermal test box. The large-temperature-zone refrigerating device adopts a two-stage refrigerating system which is composed of a mixed refrigerant cascade refrigerating system and a nitrogen refrigerating system, can realize a large-temperature-zone working condition from (-) 120 DEG C to the room temperature, can select different refrigerating modes according to different temperature needs, and is stable and efficient.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a large temperature zone refrigeration device and method for satellite atmospheric pressure thermal tests Background technique [0002] At present, the thermal test of satellites generally adopts the vacuum thermal test, but the development cost of the test equipment and the test operation cost of the vacuum thermal test are extremely high, and with the continuous increase of the envelope size of the satellite, the cost of the vacuum thermal test has become more and more unbearable , the demand for atmospheric pressure heat test began to appear. However, the temperature range of traditional atmospheric thermal test equipment is small, and it is difficult to realize cooling in large temperature zones, which affects the development of satellite atmospheric thermal tests. Therefore, there is an urgent need for economical and efficient large temperature zone refrigeration that can be app...

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Problems solved by technology

[0002] At present, the thermal test of satellites generally adopts the vacuum thermal test, but the development cost of the test equipment and the test operation cost of the vacuum thermal test are extremely high, and with the continuous increase of the envelope size of the satellite, the cost of the vacuum thermal test has become more and more unbearable , the demand for atmospheric pressure heat test began to appear

However, the temperature range of traditional atmospheric thermal test equipment is small, and it is difficult to realize cooling in large temperature zones, which affects the development of satellite atmospheric thermal tests. Therefore, there is an urgent need for economical and efficient large temperature zone refrigeration that can be applied to satellite atmospheric thermal tests. device

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