A low-temperature propellant on-orbit zero-evaporation passive thermal insulation tank

Abstract

The invention discloses a low-temperature propellant in orbit zero-evaporation passive adiabatic storage tank. The low-temperature propellant in orbit zero-evaporation passive adiabatic storage tank includes an inner container and an outer container, the inner container and the outer container are connected and supported by a support rod, a sandwich cavity is formed between the inner container andthe outer container, and the outer wall surface of the outer container is wrapped with a multi-layered adiabatic layer; the inner container is connected with a first filling pipe and a first discharge pipe, a first regulating valve is mounted on the first filling pipe, and a first safety valve is mounted at the outlet of the first discharge pipe; the sandwich cavity is connected with a second filling pipe and a second discharge pipe, a second regulating valve is mounted on the second filling pipe, and a second safety valve is mounted on the outlet of the second discharge pipe; the multi-layered adiabatic layer is composed of metal reflective screens and non-metal spacers or adopts the constitution of alternating the metal reflective screens with local fasteners; and the metal reflective screens can adjust the voltage to change the emissivity of an emission screen. The variable emissivity reflective screens and fluid heat storage of the sandwich cavity are adopted to regulate the storage tank through the directions of heat transfer of a shadow area and a light area and the distribution relationship, and lossless storage of a low-temperature propellant in space is realized.

Description

technical field [0001] The invention belongs to the technical field of aerospace low-temperature propellant storage, and in particular relates to a low-temperature propellant on-orbit zero-evaporation passive thermal insulation storage tank. Background technique [0002] Cryogenic propellants have significant advantages in the fields of supporting large loads into space and deep space exploration, but low-temperature propellants also have the disadvantages of low boiling point and easy evaporation. During long-term storage in orbit, space heat leakage will cause propellant evaporation loss. And cause the tank pressure to rise. The smooth development of deep space exploration depends on the effective thermal protection of the low-temperature propellant system, the reduction of propellant evaporation loss, and even the realization of non-destructive storage. [0003] The thermal protection technology of cryogenic propellant tank determines the available fuel quantity and the ...

AI Technical Summary

Problems solved by technology

The propellant evaporation loss corresponding to the current passive insulation technology is still too large, which cannot support longer-distance deep space exploration

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