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Detachable tube seat gas shield

A technology of protective cover and seat gas, which is applied to devices for supplying/exhausting protective gas, welding accessories, etc., can solve problems such as welding deformation, achieve high gas sealing performance, ensure welding quality, and reduce manufacturing costs.

Active Publication Date: 2017-01-11
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a detachable pipe seat gas protection cover that ensures the welding quality of pipe joints, has high versatility and economy, and solves the problem that welding is easy to occur at the welding place of the fixed pipe seat gas protection cover. Deformation, for header pipe joints of different calibers, it is necessary to be equipped with gas shields of various specifications for replacement

Method used

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  • Detachable tube seat gas shield
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Embodiment Construction

[0026] In order to make the present invention more comprehensible, preferred embodiments are described below in detail with accompanying drawings.

[0027] The present invention is a removable tube seat gas protective cover, such as Figure 3-Figure 4 As shown, it includes an outer cover 3, a sealing ring 4, a positioning ring 5, and a screw 6. The outer cover body 3, the sealing ring 4, and the positioning ring 5 are all designed with internal / external threads, and the parts are screwed to fix and matched.

[0028] Such as Figure 5-Figure 6 As shown, there are external threads on the top of the outer cover 3 for connection with the sealing ring 4. A plurality of air pipes 3-1 are welded in the middle of the outer cover 3 (4 air pipes are designed in this embodiment) to ensure the air tightness of the weld. The bottom of the outer cover 3 is in the shape of an arc (the arc radius is: R1), and the sponge cushion 3-2 is installed in cooperation with it, and the screw 6 is used for ...

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Abstract

The invention discloses a mountable and dismountable tube socket gas protection cover. The cover is characterized in that an outer cover body is included, a sealing ring is arranged in the outer cover body and connected with the outer cover body, and a positioning ring is arranged in the sealing ring and connected with the sealing ring. The cover effectively avoids poor air feeding in partial areas caused by welding deformation, ensures argon to be output uniformly in the circumferential direction, has high air sealing performance, effectively ensures the welding quality of pipe connectors, is suitable for pipe connectors with different specifications and sizes, and has high universality and economical efficiency. The structure of part design is simple, the manufacturing cost is low, the operation of mounting and dismounting is convenient, and large-scale using in a manufacturing shop is facilitated.

Description

Technical field [0001] The invention relates to a tube seat gas protective cover, in particular to a removable tube seat gas protective cover. Background technique [0002] At present, when the boiler header is in the welding operation of the inner hole argon arc welding pipe joints, the workshop usually uses a fixed pipe seat gas protective cover (this tool is used to transport argon gas and protect the inner wall welding seam of the pipe joint). The seat gas protective cover used in the workshop is a fixed design structure (such as figure 1 As shown), the cover body 1 and the inner ring 2 in the fixed seat gas protective cover are connected by welding, and the welding part is prone to welding deformation. Therefore, the air supply of this kind of device is unstable during use, and the welding defect rate of the pipe joint is relatively high, which affects the product quality. Moreover, for header pipe joints of different calibers, it is necessary to be equipped with a variety ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/32
CPCB23K9/325
Inventor 陈力姜建锋陆英豪吴利飞杨强
Owner SHANGHAI BOILER WORKS
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