Liquid nitrogen liquid helium double-medium compatible plume adsorption pump and refrigerating method thereof

Abstract

The invention relates to a liquid nitrogen liquid helium double-medium compatible plume adsorption pump and a refrigerating method thereof. The plume adsorption pump comprises a plume adsorption pump main body, resistance temperature sensors, an auxiliary liquid drainage pipeline and a liquid nitrogen supply, gas nitrogen blowing, gas helium blowing and liquid helium supply system, wherein the plume adsorption pump main body consists of three concentric cylindrical pipe plates; the resistance temperature sensors are uniformly distributed on the surfaces of the three concentric cylindrical pipe plates; and the liquid nitrogen supply, gas nitrogen blowing, gas helium blowing and liquid helium supply system is connected with a liquid inlet header pipe of the plume adsorption pump main body and the auxiliary liquid drainage pipeline through pipelines. A using method of the device is that: in the working process, liquid nitrogen and nitrogen helium are introduced into the pump for refrigerating in turn for the plume adsorption pump main body. The plume adsorption pump can be compatible with two heat exchange media, namely the liquid nitrogen and the nitrogen helium, overcomes the detects that two channels are complexly manufactured and ultralow temperature cold leakage easily occurs, meets the requirement of a plume test of an engine, and reduces test cost.

Description

technical field [0001] The invention relates to a component used for a low-temperature process system of space environment simulation test equipment, in particular to a liquid nitrogen and liquid helium dual-medium compatible plume adsorption pump and a refrigeration method thereof. Background technique [0002] The attitude and orbit control engines widely used on artificial satellites, spacecraft, space stations, deep space probes, missiles and launch vehicles, when working in a high-altitude thin environment, their jets will expand freely to the external environment to form a vacuum plume. The plume will have plume effects such as plume pollution, plume disturbance force and plume thermal effect on the spacecraft. These effects can reduce the performance of working components at least, and lead to the failure of flight missions at worst. With the rapid development of the aerospace industry, the aerospace design department is paying more and more attention to the plume pr...

AI Technical Summary

Problems solved by technology

Regardless of the medium used, the current heat sink is a single-medium flow channel, and the flow channel of the heat sink can only circulate one heat transfer medium, and cannot switch to another medium

The main reason is that the freezing point of each refrigeration medium is different. Taking liquid helium and liquid nitrogen as examples, when liquid helium is passed into the flow channel of the heat sink that circulates through the liquid nitrogen, the liquid nitrogen remaining in the flow channel will be frozen. solid, block or even damage the heat sink, so there is no ultra-low temperature heat sink flow channel that shares the two refrigerants of liquid nitrogen and liquid helium before

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