High pressure gas cylinder made from carbon fiber composite material and manufacturing method thereof

A technology of composite materials and high-pressure gas cylinders, which is applied in the direction of pressure vessels, fixed-capacity gas storage tanks, gas/liquid distribution and storage, etc., can solve the problems of long manufacturing cycle, poor airtightness, and low strength, and achieve improvement The effect of efficiency, low cost and high performance

Inactive Publication Date: 2006-02-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the disadvantages of existing high-pressure gas cylinders, such as heavy weight, low strength, high cost, long manufacturing cycle, and poor airtightness, the present inven...

Method used

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  • High pressure gas cylinder made from carbon fiber composite material and manufacturing method thereof

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specific Embodiment approach 1

[0016] Embodiment 1: carbon fiber composite material high-pressure gas cylinder, which includes a metal liner 1 and a carbon fiber composite material layer 2 wound outside the metal liner 1, welded on the head 1-1 at both ends of the central axis of the metal liner 1 There is a terminal 3, and a circumferential rib 4 is wound outside the carbon fiber composite material layer 2, and the metal lining 1 is determined by the ratio F of the tensile yield strength and the modulus of elasticity TY / E is at least 0.6%, and the elongation at break is at least 5%. The thickness δ of the finished metal lining 1 is 0.5mm-1.8mm, which is far thinner than the existing titanium alloy lining, and also Thinner than the typical aluminum alloy lining, the thickness of the lining is thinner, and the efficiency of the high-pressure gas cylinder is greatly increased; the ratio of the thickness δ of the metal lining 1 to the diameter D is 2.8×10 -3 Below, 2.0×10 can be achieved after technical resea...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that it also includes a sixth step: cleaning and polishing. In the process of preparing the metal lining 1, the five steps described in the first embodiment can already achieve the purpose of obtaining a metal lining 1 with good performance. If the sixth step is added, that is, the cleaning and polishing process, the metal lining can be guaranteed The contact between the inner liner 1 and the outer wrapping layer is good. For example, in the preparation process, an adhesive can be coated on the outer surface of the metal inner lining 1, and then the composite material layer 2 is wound. The bonding between them is good, so that the high-pressure gas cylinder can achieve better performance. The cleaning and polishing process is as follows in sequence: (a) cleaning the surface of the lining 1 with a weak base with a concentration of 0.05% to 0.15% by mass for 5 to 10 minutes; (b) using a fine metal brush dipped in...

specific Embodiment approach 3

[0024] Specific embodiment three: The present invention requires that the material for preparing the metal lining 1 is the ratio F of the tensile yield strength and the modulus of elasticity TY / E is at least 0.6%, elongation is at least the titanium alloy of 5%, as long as all titanium alloys that can reach the above-mentioned properties can prepare the high-pressure cylinder required by the present invention. High-performance metals that meet this condition can be selected from titanium alloys containing alloying elements such as Al, Fe, Ta, Mo, Sn, Cr, Si, Zr and V. In actual operation, the more commonly used ones can achieve the above properties The titanium alloy materials are Ti-6V-2Sn, Ti-6Al-2Sn-4Zr-2Mo, Ti-6Al-2Cb-1Ta-0.8Mo, Ti-6Al-4V, Ti-13V-11Cr-3Al, Ti-8Al- 1Mo-1V, Ti-3Al-8V-6Cr-4Mo-4Cr, Ti-11Sn-5Zr-2Al-1Mo, Ti-5Al-2Sn-2Zr-4Mo-4Cr, Ti-10V-2Fe-3Al, Ti-6Al- 2Sn-4Zr-6Mo, Ti-15V-3Al-3Cr-3Sn, Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.25Si or Ti-5Al-2.5Sn, the above materials are just e...

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Abstract

This invention relates to a high-pressure gas jar for the carbon fiber compound material and it's making method, wherein it uses a fiber wrapped compound material. The capability of the carbon fiber compound material as follows: the metal liner is made of the titanium alloy, wherein the proportion between its stretching bending strength and its elasticity FTY/E is at least 0.6%, its stretch rate is at least 5%, and the shape of its closing head (1-1) is the three point circle. And the metal liner (1) is made by the following steps: spinning and stretching the closing head (1-1), crystallization annealing processing, end welding and integral welding; and the carbon fiber compound material layer (2) is the carbon fiber layer or the epoxy wrapping layer. The made method includes the following steps: fiber drying, glue confecting, glue immersing, wrapping, and solidified forming. Using this method can make the light weight, well gas sealing capability, high strength carbon fiber compound high-pressure gas jar.

Description

Technical field: [0001] The invention relates to a high-pressure gas cylinder of fiber-wound composite material and a manufacturing method thereof, in particular to a high-pressure gas cylinder of high-performance ultrathin metal-lined carbon fiber-wound composite material and a manufacturing method thereof. Background technique: [0002] Compared with traditional high-pressure gas cylinders made of metal materials, high-pressure gas cylinders made of composite materials have many advantages such as light weight, high pressure, and safe failure mode of leakage before blasting. These advantages of composite high-pressure gas cylinders make them more and more used in various industrial sectors. In the aerospace industry, it is an important part of the space vehicle engine system and satellite control system. Its purpose is to carry light high-pressure gas , to control the flow of liquid fuel, oxidant, coolant and other fluids. With the rapid development of the aerospace indus...

Claims

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Application Information

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IPC IPC(8): F17C1/00F17C1/08
Inventor 赫晓东王荣国苏忠华刘文博苏钝
Owner HARBIN INST OF TECH
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