Metal lining carbon fiber winding composite material gas cylinder and manufacturing method thereof

Abstract

The invention relates to the technical field of composite material gas cylinders, in particular to a metal lining carbon fiber winding composite material gas cylinder and a manufacturing method thereof. The metal lining carbon fiber winding composite material gas cylinder comprises a nickel-base alloy lining, a carbon fiber / epoxy resin composite layer and a metal flange. The nickel-based alloy lining is formed by welding an air port joint, an air port end sealing head, a cylinder body, a sealing end sealing head and a sealing end joint. The carbon fiber / epoxy resin composite layer is wound on the outer surface of the nickel-based alloy lining. The metal flange is connected with the bottom of the sealing end sealing head. The metal lining carbon fiber winding composite material gas cylinder is simple in structure, high in reliability, high in safety, high in pressure bearing capacity, small in body mass, wide in medium storage range and high in high and low temperature environment resistance, the performance requirements for high performance factors and long fatigue life can be met at the same time, and the requirements for light high-strength composite gas cylinders in the fields of spaceflight, aviation, ships and the like are met.

Description

technical field [0001] The present application relates to the technical field of composite gas cylinders, in particular to a metal-lined carbon fiber wound composite gas cylinder and a manufacturing method thereof. Background technique [0002] Compared with all-metal gas cylinders, composite gas cylinders have the characteristics of light weight, high strength, long load working life, and safe failure modes, making them widely used in aerospace, aviation and other fields. In order to meet the characteristics of light weight and high strength, gas cylinders in aerospace and other fields are mostly designed with ultra-thin wall linings. When the gas cylinders are in operation, the lining will undergo large plastic deformation, which belongs to the design of low-cycle fatigue life. The fatigue life is generally less than 100 times, resulting in ultra-thin wall. Wall-lined gas cylinders cannot be used in engineering fields with high fatigue life requirements. The thinner the w...

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Problems solved by technology

The lining of traditional aerospace gas cylinders is made of titanium alloy, which has the problem of not being able to store oxygen, hydrogen, liquid hydrogen, liquid oxygen and other media. Pure titanium, aluminum alloy, and stainless steel materials have a narrow elastic strain range, which does not meet the high fatigue life of ultra-thin wall linings. The design requirements of gas cylinders cannot meet the requirements of high performance factor and high fatigue life at the same time. The traditional gas cylinder composite layer resin has low thermal deformation temperature and poor low-temperature mechanical properties, which cannot meet the requirements of high and low temperature environments. Therefore, various fields urgently need a multi-purpose High-performance ultra-thin-wall metal-lined carbon fiber wound composite gas cylinder

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