Conical double-layer heat sink device compatible with two media of liquid nitrogen and liquid helium and refrigeration method thereof

Abstract

The invention provides a conical double-layer heat sink device compatible with two media of liquid nitrogen and liquid helium and a refrigeration method thereof. The device mainly comprises a resistor temperature sensor, a heat sink main body, a fluid discharge system, and liquid nitrogen supply, gaseous nitrogen blowoff, gaseous helium blowoff, liquid helium supply and auxiliary liquid dischargesystems, wherein the heat sink main body comprises a liquid helium heat sink, a liquid nitrogen heat sink and corresponding frameworks; the liquid helium heat sink and the liquid nitrogen heat sink are of a conical structure; the liquid helium is positioned on the inner side; and the heat sink main body is connected with the supply and discharge systems through corrugated hoses and pipelines. Therefrigeration method of the device comprises: during working, the liquid nitrogen heat sink is refrigerated by being fed with the liquid nitrogen continuously; and the liquid helium heat sink is refrigerated by being fed with the liquid nitrogen and then the liquid helium. According to the invention, the liquid nitrogen and the liquid helium can share the same heat sink flow channel; and the insufficient volume of the sealing head of a cabin body is fully used, so the heat sink area is increased effectively and the vacuum degree of an engine plume flow test is improved.

Description

technical field [0001] The present invention relates to a component used for the low-temperature process system of space environment simulation test equipment, in particular to a component used for the ultra-low temperature process system of engine plume test equipment, specifically to a hinged cabin head Liquid nitrogen and liquid helium dual-medium compatible conical double-layer heat sink device and refrigeration method thereof. Background technique [0002] The space environment simulation test equipment and the engine plume test equipment are all equipment for simulating the space vacuum and low temperature environment. The heat sink is the main part of this type of equipment, and provides the required ambient temperature and vacuum degree for the equipment test space through radiative heat exchange. , in order to achieve this goal, the temperature of the heat sink must be controlled, and the control of the temperature of the heat sink is realized by forcing the heat tr...

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Problems solved by technology

[0006] Aiming at the shortage that the plate-shaped heat sink cannot make full use of the volume at the head of the cabin body, the invention proposes a conical double-layer heat sink device compatible with liquid nitrogen and liquid helium and a refrigeration method thereof, which can make full use of the cabin body The lack of volume at the head can effectively increase the heat sink area and greatly improve the vacuum degree of the engine plume test

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