High-efficiency heat-insulation storage device and structure for space station

Abstract

The invention discloses high-efficiency heat-insulation storage device and structure for a space station. The high-efficiency heat-insulation storage device for the space station is provided with at least one storage chamber, wherein a first side wall of the storage chamber comprises an inner wall layer, a support piece, a heat-insulation core layer and an outer wall layer arranged sequentially from the storage chamber to the outside environment; the inner wall layer and the outer wall layer form a sealed space; gas with a low heat conductivity coefficient is filled in the sealed space; and the support piece is of a horn-shaped structure and comprises a large-diameter end connected with the inner wall layer and a small-diameter end penetrating through the heat-insulation core layer so as to be abutted against the small-diameter end of the outer wall layer. The high-efficiency heat-insulation storage device for the space station provided by the invention has the excellent effects of small structure heat conduction, small gas heat conduction, small side wall dimension, large storage chamber utilization space and high heat insulation efficiency, and meets the low-temperature storage demand of the space station.

Description

technical field [0001] The invention relates to the technical field of low-temperature storage in space, in particular to a high-efficiency adiabatic storage device and structure for a space station. Background technique [0002] Heat transfer through the adiabatic structure of a cryogenic storage device is the result of a combination of several heat transfer modes, often involving solid conduction, gas conduction, gas convection, and heat radiation. At present, expansion foam insulation, high vacuum insulation, powder insulation and high vacuum multi-layer insulation are generally used to eliminate one or several heat transfer methods of the insulation structure of cryogenic storage devices. However, these thermal insulation methods cannot be well applied to cryogenic storage devices in aerospace space stations. Mainly reflected in the following aspects. [0003] One is space limitation. Under the requirements of a certain envelope size of the storage device and the stora...

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Problems solved by technology

[0003] One is the space limitation. Under the requirements of a certain envelope size of the storage device and the storage volume of the low-temperature storage device as large as possible, the thickness of the thermal insulation structure of the low-temperature storage device is strictly limited.

Therefore, expansion foam insulation and powder insulation, which mainly reduce solid heat conduction, are limited in use due to their poor insulation performance and large thickness of insulation layer;

[0004] The second is the launch weight limit. The high-vacuum heat insulation mainly to reduce gas convection and gas heat conduction needs to meet the vacuum conditions. When the inner and outer wall materials of the low-temperature device are selected, in order to ensure the strength requirements of the low-temperature storage device, the thickness of the device wall will be reduced. increased, and thus limited in use due to its high weight;

However, due to the vacuum requirement, the weight of the low-temperature device increases, which limits its use; in addition, the multi-layer material is a soft material like paper, which does not meet the strength requirements

[0006] However, the existing heat insulation structure cannot meet the heat insulation requirements of the low-temperature storage device used in the space station and the special heat transfer mode under the condition of weightlessness (there is no natural convection heat transfer in weightlessness, and the heat can only be transferred through radiation and heat conduction). Therefore, this Those skilled in the art urgently need to provide a thermal insulation structure that can be applied to the above-mentioned special heat transfer mode

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