Weld junction positioning method, device and equipment for zirconium alloy pipeline welding

Abstract

The invention relates to a welded junction positioning method, device and equipment for zirconium alloy pipeline welding, and relates to the technical field of pipeline welding.The welded junction positioning method comprises the steps that a handle is held by hand, a metal plate with the section being in an arc shape matched with the inner wall of a to-be-welded pipeline stretches into a seam of the adjacent to-be-welded pipeline, and the metal plate is attached to the inner wall of the to-be-welded pipeline; a welding groove is formed by the welding rod and an adjacent to-be-welded pipeline port; and argon is filled into the welding groove, and solid spot welding is carried out. As the metal plate and the port of the adjacent to-be-welded pipeline form the welding groove, argon is filled into the welding groove and solid point welding is carried out, argon can be locally injected into the pipeline and welded, the welding efficiency is improved, weld bead defects and repair risks caused by improper tool protection are avoided, and the welding quality is improved. The problems that in the prior art, the mode that high-purity argon is filled into a pipeline in advance, the argon consumption is large, especially in a long pipeline or a complex welded junction scene, gas leakage or excessive filling can cause waste of a large amount of high-purity argon, the argon utilization rate is reduced, and the production cost is improved are solved.

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