Large pipeline welding system

Abstract

The invention discloses a large pipeline welding method and a system thereof. The method comprises the steps: placing a pipeline on a welding roller frame, arranging a gantry welding frame above the pipeline, installing a liftable first welding gun below the gantry welding frame, lifting the first welding gun to the upper surface of the pipeline, and driving the pipeline to rotate slowly by the welding roller frame, wherein outer circular seam welding of the pipeline is realized; arranging the gantry welding frame on a rolling foot stool, wherein outer longitudinal seam welding of the pipeline is achieved through movement of the gantry welding frame; and arranging an inner circular seam welding machine on a side portion of the pipeline, installing a second welding gun on a welding arm of an inner circular seam welding machine which extends into the pipeline, wherein a welding roller frame drives the pipeline to rotate slowly, so as to realize inner circular seam welding of the pipeline. The method and system can be used for welding inner and outer circular seams and outer longitudinal seams, and has the advantages of convenience in use, good welding effect, time saving and labor saving.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to a large-scale pipeline welding method and system thereof. Background technique [0002] Welded steel pipe refers to a steel pipe with seams on the surface that is welded after bending and deforming a steel strip or steel plate into a circular, square, etc. shape. The blank used for the welded steel pipe is steel plate or strip steel. In the prior art, when steel pipes are welded, the steel pipes are usually fixed and then manually welded, which is time-consuming and laborious, and the work efficiency is low, and the quality of the welds cannot be guaranteed. A variety of welding work, so now there are also steel welded by the welding device, specifically the position of the steel pipe is fixed, and then the welding device feeds and welds, but the welding device is easy to shake during the feeding process, which makes the welding mechanism on it shake , and affect the q...

AI Technical Summary

Problems solved by technology

In the prior art, when steel pipes are welded, the steel pipes are usually fixed and then manually welded, which is time-consuming and laborious, and the work efficiency is low, and the quality of the welds cannot be guaranteed. A variety of welding work, so now there are also steel welded by the welding device, specifically the position of the steel pipe is fixed, and then the welding device feeds and welds, but the welding device is easy to shake during the feeding process, which makes the welding mechanism on it shake , and affect the quality of the weld

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