Gas welding sealing process of 60 MPa ultrahigh-pressure cylinder

A process method and ultra-high pressure technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the technical problems of inflation, plugging, welding and sealing, and can not meet ultra-high pressure gas cylinders, etc. Operation, small tightening torque, simple operation and excellent effect

Active Publication Date: 2015-07-15
SHENYANG AEROSPACE XINGUANG GRP
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Problems solved by technology

[0002] With the development of science and technology, the original high-pressure gas cylinder index cannot meet the new index requirements, and the pressure requirements of high-pressure gas cylinders are getting higher and higher. Ultra-high pressure gas cylinders have become a development trend, and have

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  • Gas welding sealing process of 60 MPa ultrahigh-pressure cylinder

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Embodiment

[0016] Ultra-high pressure gas cylinders can be composite material high pressure gas cylinders or steel gas cylinders. Composite material high-pressure gas cylinders should include a steel liner and a winding layer. The steel liner is a stainless steel welded liner, which is machined, spun and stretched into two and a half liners of the cylinder body, and passed through an argon arc. An integral stainless steel inner tank obtained by welding a circumferential weld, or a steel inner tank directly formed by spinning and closing; an insulating layer is provided between the surface of the stainless steel inner tank and the carbon fiber winding layer; the outer protective layer of the gas cylinder It is a winding layer reinforced with high-strength glass fiber. The steel gas cylinder is a gas cylinder whose whole body is made of steel and formed by welding or spinning.

[0017] Concrete processing steps of the present invention are as follows:

[0018] Step 1, inflation process: ...

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Abstract

The invention relates to a gas welding sealing process of a 60 MPa ultrahigh-pressure cylinder. The gas welding sealing process comprises a high-pressure cylinder filling method, a sealing method and a pressure welding sealing method. According to the gas welding sealing process, a welding sealing fixture is designed, so as to fill the cylinder, and a filling and releasing replacement method is adopted, so that the purity and a dew point of gas in the cylinder reach the required requirements; a sealing method that a sealing needle is in interference fit with a filling mouth hole is adopted, and a knocking method is adopted, so as to perform mechanical sealing on the high-pressure gas in the cylinder; the filling mouth hole is welded by adopting a welding method, so that the welding penetration reaches the requirements. According to the filling, sealing and welding sealing process, the high-performance technical index requirements are guaranteed, the purity of nitrogen in the cylinder is more than 99.98%, and the dew point is lower than -55 DEG C; after welding sealing, air tightness inspection is performed on a filling mouth, air leakage is not permitted, and the welding penetration is not less than 0.5 mm by inspection.

Description

technical field [0001] The invention relates to a gas cylinder production method, in particular to a 60MPa ultra-high pressure gas cylinder filling and sealing process. Background technique [0002] With the development of science and technology, the original indicators of high-pressure gas cylinders cannot meet the requirements of new indicators, and the pressure requirements of high-pressure gas cylinders are getting higher and higher. Ultra-high pressure gas cylinders have become a development trend, and have been gradually developed and applied. However, with the increase in the pressure of gas cylinders, the current production methods of gas cylinders have technical difficulties in the filling, sealing, and welding processes, which cannot meet the requirements of ultra-high pressure gas cylinders. bottle requirements. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a 60MPa ultra-high pressur...

Claims

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Application Information

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IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 孙绍功王帅来
Owner SHENYANG AEROSPACE XINGUANG GRP
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