Zirconium heat exchanger pipe head fillet weld automatic welding gas protection device

Abstract

The invention discloses a zirconium heat exchanger pipe head fillet weld automatic welding gas protection device, and belongs to the technical field of automatic welding protection. The device comprises high-temperature-resisting visual glass and a connecting shaft arranged in the high-temperature-resisting visual glass; the connecting shaft is arranged on a welding machine rotating shaft in a sleeving manner, multiple supporting rods are fixed to the connecting shaft, the high-temperature-resisting visual glass is in sealed connection with a pipe plate, a punching copper pipe is wound on theinner wall of the high-temperature-resisting visual glass, one end of the punching copper pipe is connected with outer inert gas through an air inlet connecting pipe, a hole positioning plug is connected to the end of the welding machine rotating shaft. The zirconium heat exchanger pipe head fillet weld automatic welding gas protection device is suitable for automatic welding protection of the pipe head fillet weld where a heat exchange pipe extends out of a pipe plate by 1.5 mm or above, the effective protection effect on the pipe head fillet weld of a zirconium heat exchanger can be achieved, under protection of the device, the welding area of the pipe head fillet weld is not prone to oxidizing discoloration, the welding line and the hot effect area are silver, and the welding joint areais silver.

Description

technical field [0001] The invention relates to a welding seam protection device, in particular to an automatic welding gas protection device for the fillet weld of a zirconium heat exchanger tube head, belonging to the technical field of automatic welding protection. Background technique [0002] In the manufacturing process of zirconium heat exchangers, the gas shielding effect of zirconium welded joints is an important factor affecting the welding quality. At present, the tube head form of zirconium heat exchangers is flat head welding, and the structure of flat head welding is conducive to the gas flow in the welding process. protection, the welding can be completed without additional tooling, but the structural weld of the flat head welding is not protected by the heat exchange tube, so that it is directly washed by the material. thin and cause leakage. Contents of the invention [0003] The main purpose of the present invention is to provide a gas protection device ...

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Problems solved by technology

[0002] In the manufacturing process of zirconium heat exchangers, the gas shielding effect of zirconium welded joints is an important factor affecting the welding quality. At present, the tube head form of zirconium heat exchangers is flat head welding, and the structure of flat head welding is conducive to the gas flow in the welding process. protection, the welding can be completed without additional tooling, but the structural weld of the flat head welding is not protected by the heat exchange tube, so that it is directly washed by the material. thin and leak

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