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Liner end enclosure molding process of high-pressure hydrogen storage cylinder

A molding process and liner technology, which is applied to household appliances, hollow objects, other household appliances, etc., can solve the problems of easy deformation of aluminum alloy clamping and difficult forming of aluminum alloy heads, so as to solve the problems of easy deformation, solving molding, The effect of saving steps in the manufacturing process

Active Publication Date: 2010-11-10
SINOMA SCI & TECH CHENGDU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of easy deformation of aluminum alloy clamping in the prior art;
[0005] Another object of the present invention is to solve the problem of difficult forming of aluminum alloy heads;

Method used

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  • Liner end enclosure molding process of high-pressure hydrogen storage cylinder
  • Liner end enclosure molding process of high-pressure hydrogen storage cylinder
  • Liner end enclosure molding process of high-pressure hydrogen storage cylinder

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Embodiment Construction

[0021] Combine below figure 1 , figure 2 The present invention is described in detail:

[0022] The present invention provides a high-pressure hydrogen storage cylinder, comprising an inner tank body 1, an inner tank head 2 and a transition section 3 at the junction of the inner tank body 1 and the inner tank head 2, the inner tank head 2 The molding process includes the following steps:

[0023] Step 1: Clamping process, clamping the aluminum alloy pipe blank with claws, the diameter of the aluminum alloy pipe blank is 389mm, the wall thickness is 5.5mm, the claw is composed of five equal claws, and the claw is equipped with a locking screw hole; and must be considered in the design of the claws, so that the claws are circular after clamping, and there is no gap between the five petals.

[0024] Step 2: Heating, preheating the clamped aluminum alloy pipe blank, using a natural gas-oxygen heating device, controlling the heating rate by controlling the distance between the ...

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Abstract

The invention provides a high-pressure hydrogen storage cylinder, which comprises a liner body, a liner end enclosure and a transition section of the joint of the liner body and the liner end enclosure. A molding process of the liner end enclosure comprises threes steps of clamping processing, billet heating, and neck-spinning. The invention has the beneficial effects that: clamping jaws are designed to clamp during fixing so as to solve the problem that aluminum alloy easily deforms when being tightly clamped, so that the surface of a product has no clamping marks; and the reasonable heating speed and pass number are selected to solve the problem that the aluminum alloy end enclosure is difficult to mold. The process provided by the invention effectively solves the problem of the molding of the transition section of the hydrogen cylinder, and eliminates the manufacturing processes of the gas cylinder.

Description

technical field [0001] The invention relates to a molding process of an aluminum liner head of a high-pressure hydrogen storage cylinder, which belongs to the field of mechanical manufacturing. Background technique [0002] High-pressure gas cylinders are one of the essential key components for compressed hydrogen storage. At present, metal containers and composite material containers are mainly used for filling compressed hydrogen. Metal containers are generally heavy, and the hydrogen storage density per unit mass of a steel pressure vessel with a pressure of 15 MPa is generally only about 1 wt%, which limits its application in fuel cell vehicles. With the rapid development of fuel cell electric vehicles, high requirements have been placed on the mass and volume hydrogen storage density of the on-board hydrogen storage system (the target requirement of the U.S. Department of Energy is 6wt%H 2 / m 3 and 60kgH 2 / m 3 ). Composite material high-pressure vessels have many...

Claims

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Application Information

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IPC IPC(8): B21D51/38
Inventor 鲁博米宽武孟献王骏陈军朱小芳
Owner SINOMA SCI & TECH CHENGDU CO LTD
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