Loop heat pipe system and its stainless steel capillary non-collapse welding process

Abstract

The invention provides a loop heat pipe system and a stainless steel capillary tube non-collapse welding technological method for the loop heat pipe system. The loop heat pipe system comprises an evaporator gas-end end enclosure (1), a first stainless steel joint (2), a loop heat pipe working medium pipeline (3), a second stainless steel joint (4), a liquid accumulator liquid-end end enclosure (5), which are sequentially connected, and further comprises an evaporator and a liquid accumulator. The loop heat pipe system and a stainless steel capillary tube non-collapse welding technological method comprises the following technological steps of stainless steel capillary tube dropping, stainless steel joint manufacturing, dimension detecting, matched checking of the stainless steel joint and the stainless steel capillary tube, too-fit fitting of the stainless steel capillary tube and the stainless steel joint, solder coating, high-temperature vacuum braze welding, loop heat pipe end enclosure manufacturing, butt-joint TIG welding, and welding seam checking. On the premise of not affecting performances of a capillary core in the loop heat pipe evaporator, and non-collapse welding of the stainless steel capillary tube for the loop heat pipe is realized, so that reliability and heat transfer property of the loop heat pipe are improved.

Description

technical field [0001] The invention relates to the field of a loop heat pipe temperature control device in the technical field of spacecraft thermal control, in particular to a loop heat pipe system and a non-collapse welding process for stainless steel capillary tubes. Background technique [0002] Loop Heat Pipe (LHP) is a high-efficiency two-phase heat transfer device. It uses the capillary force generated by the capillary core in the evaporator to drive the circulating flow of the working fluid, and uses the phase change process of the evaporation and condensation of the working fluid to transfer heat. Realize spacecraft heat dissipation. At present, the loop heat pipe temperature control device has become the main thermal control means of spacecraft in European and American countries. [0003] When the other components are consistent, the flow pressure drop of the internal working fluid in the gas pipeline, liquid pipeline and radiator pipeline during the operation of...

AI Technical Summary

Problems solved by technology

Therefore, loop heat pipes are not suitable for overall heating

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