Various material composite fire retardant-type high vacuum multiple layer heat insulation structure

Abstract

The invention relates to a flame-retardant high-vacuum multi-layer thermal insulation structure compounded by various materials, which belongs to the field of cryogenic engineering and cryogenic technology. The invention includes high-temperature side combination, transition combination and low-temperature side combination. The high-temperature side combination adopts alternate combination of aluminum foil and glass fiber paper; the transition combination adopts double-sided aluminized film and glass fiber paper, or aluminum foil and chemical fiber paper, or double-sided coated Alternate combination of aluminum film and chemical fiber paper; the combination of double-sided aluminized film, glass fiber paper and chemical fiber paper is used for the low temperature side combination. The heat insulation structure of the present invention is non-combustible outside, the whole structure is flame retardant, and the low temperature heat insulation performance is better than the traditional flame retardant heat insulation structure, so the amount of heat insulation materials can be reduced, the cost of heat insulation materials can be reduced, and the distance between vacuum interlayers can be reduced. The effective volume inside the large cryogenic container is more conducive to the lightweight and volume maximization of mobile cryogenic storage and transportation equipment, and has significant economic and social benefits in cryogenic engineering.

Description

technical field [0001] The invention relates to a high-vacuum heat-insulation structure for low-temperature storage and transportation equipment, in particular to a flame-retardant high-vacuum multi-layer heat-insulation structure composed of multiple materials, which has good low-temperature heat insulation performance and flame retardancy. It belongs to the field of cryogenic engineering and cryogenic technology. Background technique [0002] High-vacuum multi-layer insulation is a commonly used high-efficiency insulation method in low-temperature storage and transportation equipment. Its structural principle is to alternately place high-reflectivity metal films and low-thermal-conductivity spacers in the vacuum jacket, usually using dozens of reflectors. Alternating combination of layers and spacer layers. The vacuum jacket and the multi-layer insulation materials in it form a complete high-vacuum multi-layer insulation structure, which can limit the heat transfer throug...

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Problems solved by technology

None of the patents mentioned the use of multiple different reflective materials and spacers in the same multilayer insulation structure, and the use of different combinations of multilayer materials in different temperature ranges, nor did they mention the characteristics of the flame retardancy of the insulation structure

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