Gravity-driven two-phase fluid circuit compatibility equivalent simulation test piece

Abstract

The invention discloses an equivalent simulating test piece of gravity drive two-phase fluid circuit consistency. By the application of the equivalent simulating test piece, decomposition process of gravity drive two-phase fluid circuit ammonia at a high temperature and in the condition of using nickel as a catalyst can be equivalently simulated. The equivalent simulating test piece is a closed hollow and integrally-formed gravity thermal pipe and is separated into three sections, namely a liquid storing component, a connecting pipeline and a high temperature baking assembly. By designing the size and structure of the gravity thermal pipe, the equivalent simulating test piece is available for equivalently simulating the decomposition process of the gravity drive two-phase fluid circuit ammonia at the high temperature and in the condition of using nickel as the catalyst, and then obtaining non-condensable gases through ammonia decomposition by adopting a method of measuring non-condensable gases through the gravity thermal pipe, and the measuring method is available and convenient, thereby the consistency of ammonia and the texture of the gravity drive two-phase fluid circuit is effectively and conveniently judged.

Description

technical field [0001] The invention relates to the technical field of spacecraft thermal control, in particular to a gravity-driven two-phase fluid circuit compatibility equivalent simulation test piece. Background technique [0002] In the lunar (or planetary) landing exploration activities, due to the large temperature difference between day and night on the surface of the moon, and the probe has no electric power during the moon night, in order to solve the problem of the probe’s moon night survival, the thermal control design scheme of the isotope nuclear heat source + gravity-driven two-phase fluid circuit is adopted. , the system composition of the gravity-driven two-phase fluid circuit is as follows figure 1 As shown, it includes an evaporator 1 (including a wire mesh evaporator 7, a liquid diverter 8 and a vapor confluence 9), a vapor pipeline 2, a condensation pipeline 3, a liquid reservoir 4, a liquid pipeline 6 and a control valve 5, Wherein, the condensing pipe...

AI Technical Summary

Problems solved by technology

If the gravity-driven two-phase fluid circuit is directly used to carry out research on compatibility issues, there will be difficulties in obtaining the high temperature of the evaporator 1 and the amount of non-condensable gas produced by decomposition cannot be directly tested. Therefore, the present invention has developed a gravity heat pipe. Carry out high-temperature compatibility test research on gravity heat pipes, and equivalently simulate the compatibility problem of gravity-driven two-phase fluid circuits

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