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Inner sealing device

A technology of inner sealing and inflatable device, which is applied to auxiliary devices, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of inconvenient use, narrow application scope of a single piece, and can not completely solve the problem of protective gas sealing in the welding area, etc. To achieve the effect of novel structure

Inactive Publication Date: 2008-07-23
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the boiler and pressure vessel manufacturing industry, in the manufacture of pipelines or special containers, most of the anti-oxidation protection measures for the back of the argon arc welding seam are argon-filled protection, and the general argon seal protection has disc seals. Plug device and air bag type internal sealing device, the disc sealing plug is mainly composed of "steel plate + rubber plate" and other parts, its structure is heavy, the scope of application of a single piece is narrow, and there are many specifications and sizes, the inner diameter of pipes with different specifications must use the corresponding disc type The sealing plug is quite inconvenient to use and cannot completely solve the problem of sealing the shielding gas in the welding area

Method used

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Effect test

Embodiment 1

[0017] As shown in Figure 1, it is a schematic diagram of the structure of an inflatable inner sealing device. The inflatable inner sealing device is composed of an air supply adjusting valve 1, an inflating device 2, an argon tube 3, an exit pull ring 4, and a traction rope 5 Composition, an argon tube 3 with an inflatable hole passes through the inflatable device 2, the inflatable device 2 is a balloon made of fluororubber, one end of the argon tube 3 is installed with an air supply regulating valve 1, the other end is installed with an exit pull ring 4, and a traction rope 5 Connect with exit tab 4.

[0018] When in use, several inflatable inner sealing devices are placed in each working position of the pipeline 6 as required, and one end of the argon gas tube 3 with the pull-out ring 4 is connected to the argon gas source for intake, and the gas-filled holes on the argon gas tube 3 are opposite to each other. After the balloon is inflated, it expands until the inner wall o...

Embodiment 2

[0020] The inflatable device 2 is an airbag made of flame-retardant fabric, and the rest are the same as in Embodiment 1.

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Abstract

The invention relates to an internal sealing device. The invention is characterized in that the invention consists of an air-feeding adjusting valve, an inflation device, an argon pipe, a withdrawing pulling ring and a traction rope; the argon pipe with a stomata passes through the inflation device; one end of the argon pipe is provided with the air-feeding adjusting valve and the other end thereof is provided with the withdrawing pulling ring; the traction rope is connected with the withdrawing ring. The invention has the advantages of novel and light structure, being suitable for severe welding working environment, being especially suitable for the sealing protection of abnormal section internal chamber, and convenient application.

Description

technical field [0001] The invention relates to an inner sealing device, in particular to an inner sealing device which solves the gas sealing problem of argon protection on the back of the weld seam when container products are welded by argon arc welding, and belongs to the field of sealing technology. Background technique [0002] In the boiler and pressure vessel manufacturing industry, in the manufacture of pipelines or special containers, most of the anti-oxidation protection measures for the back of the argon arc welding seam are argon-filled protection, and the general argon seal protection has disc seals. Plug device and air bag type internal sealing device, the disc sealing plug is mainly composed of "steel plate + rubber plate" and other parts, its structure is heavy, the scope of application of a single piece is narrow, and there are many specifications and sizes, the inner diameter of pipes with different specifications must use the corresponding disc type The se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/32B23K37/00
Inventor 孙厚彬邓建国王苗苗
Owner SHANGHAI BOILER WORKS
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