Composite gas cylinder support structure and processing method thereof

By combining a TA2 titanium alloy liner with a carbon fiber winding reinforcement layer and a TC4 titanium alloy integral bracket, the problems of excessive weight and easy fatigue in aerospace high-pressure gas cylinders have been solved, achieving lightweight, high strength and rapid assembly, thus improving the operational reliability and production efficiency of spacecraft.

CN122014988BActive Publication Date: 2026-07-21LIAONING METAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING METAL TECH
Filing Date
2026-04-10
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing high-pressure gas cylinders for aerospace have problems such as excessive weight, complex manufacturing process, easy fatigue cracking of connection structure, cumbersome installation and low material utilization, making it difficult to meet the high strength, lightweight and rapid assembly requirements of spacecraft.

Method used

The design adopts a combination of a TA2 titanium alloy liner and a carbon fiber winding reinforcement layer with a TC4 titanium alloy integral bracket. Through the plug-in structure and integrated molding process, along with the carbon fiber winding fixing layer, a tight connection between the bracket and the gas cylinder is achieved. The operation is automated by using special tooling for positioning and wet fiber winding process.

Benefits of technology

It achieves lightweight (total weight 1.875kg), high strength (burst pressure ≥120MPa), precise positioning and rapid assembly of gas cylinders, reducing production costs and rework rate, and improving on-orbit reliability and ease of installation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of aerospace high-pressure gas cylinder matching structures and processing technologies, and discloses a composite gas cylinder support structure and a processing method thereof, which comprises a composite gas cylinder, the composite gas cylinder comprises a titanium alloy TA2 inner liner, a carbon fiber winding reinforcing layer and a support, and the support is a TC4 titanium alloy integral support; the titanium alloy TA2 inner liner is formed by electron beam welding of an upper half shell and a lower half shell through an insertion structure. Compared with the traditional technology, the composite gas cylinder support structure and the processing method thereof have the following advantages: the integral support design cooperates with the integrated connection mode of the carbon fiber winding fixing layer, replaces the mechanical / welding connection of the traditional titanium alloy support, and improves the connection strength and overall rigidity of the support and the gas cylinder; the design of the flat ellipsoidal head avoids the adverse influence of the circumferential compressive stress on the pressure container; and the accurate design of the carbon fiber winding reinforcing layer 16 ring 6 longitudinal direction makes the ring blasting pressure of the gas cylinder much higher than the working pressure requirement, thereby meeting the demand of the aerospace high-pressure working condition.
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