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Pressure vessel

A pressure vessel and pressure technology, which is applied to pressure vessels, equipment loaded into pressure vessels, and vessel filling methods, etc., can solve the problems of reduced strength and ductility, reduced pressure storage performance of pressure vessels, etc., and achieves suppression of hydrogen environment embrittlement. Effect

Pending Publication Date: 2020-07-17
JAPAN STEEL WORKS M&E INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case where hydrogen gas is stored in the pressure vessel, when the pressure vessel has a structure in which the hydrogen gas is in direct contact with the screwable portion constituting the opening portion of the pressure vessel, there is a stress concentration in the screwable portion (for example, The problem that the strength and ductility of the screw joint between thread and box thread) may be reduced due to so-called hydrogen embrittlement
Such embrittlement of the pressure vessel is not preferred as it may lead to a reduction in the pressure storage performance of the pressure vessel

Method used

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Embodiment Construction

[0042]

[0043] The pressure vessel 10 according to the embodiment of the present invention will be described below.

[0044] Such as figure 1 As shown in , the pressure vessel 10 of this embodiment includes: a cylindrical cylinder portion 1 made of steel defining a pressure accumulator chamber 11 therein; a cover portion 2 made of metal, the cover portion 2 It is arranged to close the two ends of the cylindrical cylinder part 1, and each cover part 2 has a passage hole 25D; the screwable part 3, which is made of metal, the screwable part 3 fixing the cover portion 2 to the cylindrical cylinder portion 1; and a reinforcing ring 4 made of metal fitted to the outer peripheral surfaces 1F of both ends of the cylindrical cylinder portion 1. As will be described later, the pressure receiving surface 2A of the cover portion 2 facing the pressure accumulation chamber 11 directly receives the pressure of the high-pressure gas in the pressure accumulation chamber 11 . On the other...

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Abstract

A pressure vessel (10) is provided with: a cylinder part (1) that defines a pressure chamber (11); a screwing part (3) that is disposed inside at least one of the two ends of the cylinder part; a lid(2) that has a pressure-receiving surface (2A) facing the pressure chamber and that is disposed at a position closer to the pressure chamber than is the screwing part; and a reinforcing ring (4) thatis fitted to the outer circumferential surface of the cylinder part. The reinforcing ring covers, along the axial direction of the cylinder part, a part on an outer circumferential surface (1F) corresponding to a portion or the entirety of the engaging portion (12) between the cylinder part and the screwing part.

Description

technical field [0001] The present invention relates to a pressure vessel including a pressure accumulation chamber capable of storing hydrogen gas and the like. Background technique [0002] Examples of devices for storing high-pressure gas include pressure vessels for storing and transporting high-pressure hydrogen gas used at hydrogen stations and the like. Conventionally, pressure vessels are manufactured using high strength low alloy steels such as Cr-Mo steels. However, in the case where hydrogen gas is stored in the pressure vessel, when the pressure vessel has a structure in which the hydrogen gas is in direct contact with the screwable portion constituting the opening portion of the pressure vessel, there is a stress concentration in the screwable portion (for example, The threaded part between the thread and the female thread) may have a problem of reduced strength and ductility due to so-called hydrogen embrittlement. Such embrittlement of the pressure vessel is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/02
CPCY02E60/32F17C2201/056F17C2203/012F17C2270/0184F17C2201/0119F17C2203/0639F17C2205/0311F17C2209/224F17C2209/228F17C2221/012F17C2223/0123F17C2223/036F17C2260/011F17C2270/0178F17C2203/0617F17C2203/066F17C1/16F17C1/14F17C1/02F17C13/002F17C2201/0104F17C2203/011F17C5/06
Inventor 和田洋流细矢隆史辻裕一
Owner JAPAN STEEL WORKS M&E INC