Argon filling tool and method for argon arc welding butt joint of large-diameter pipelines

A large-diameter pipe and argon-filled technology, which is applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of increasing welding difficulty, argon filling volume, and slow welding speed, so as to facilitate argon flow and easy cleaning , the effect of reducing the volume

CN112059365APending Publication Date: 2020-12-11XIAN THERMAL POWER RES INST CO LTD +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: XIAN THERMAL POWER RES INST CO LTD
Publication Date: 2020-12-11

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Abstract

The invention discloses an argon filling tool and method for argon arc welding butt joint of large-diameter pipelines, and belongs to the technical field of argon arc welding butt joint of pipelines.The device comprises arch-shaped shells, flexible blocking plates and an inflation nozzle, wherein two arch feet of the arch-shaped shells are connected with the inner walls of the two pipelines to bewelded respectively, and the arch tops of the arch-shaped shells face the interiors of the two pipelines to be welded; the flexible blocking plates wind the outer walls of the two pipelines to be welded, and the arch-shaped shells and the flexible blocking plates form closed air chambers surrounding welded junctions; and the flexible blocking plate is provided with an inflation opening and an exhaust opening, and the inflation nozzle is inserted into the inflation opening. The tool is reasonable in structural design and convenient to mount and dismount, the working efficiency is greatly improved, the manufacturing and mounting cost of the tool is saved, the using amount of argon is reduced, and the economic effect is obvious.

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Description

technical field

[0001] The invention belongs to the technical field of pipeline argon arc welding butt joint, and in particular relates to an argon-filled frock and method for large-diameter pipeline argon arc welding butt joint. Background technique

[0002] During the welding process of traditional high-alloy steel pipelines, the entire welding pipeline is generally protected with argon gas. The use of argon gas is more, which is uneconomical, and the inner cavity of argon gas is relatively large, so the protection effect is not obvious. Seal one end of the pipeline, and seal the other end with a sponge and glue board, drag the seal to form a small airtight space, and insert the argon filling hose from one end of the pipeline to fill it with argon. This method must be welded one by one. Multiple welders cannot start welding multiple welds at the same time. The welding speed is slow. This method is not easy to move when the pipe elbow is welded, which increases the difficul...

Claims

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