Automatic assembling and welding device and method for pressure container

Abstract

The invention discloses an automatic assembling and welding device and method for a pressure vessel, and belongs to the technical field of pressure vessel welding. The device comprises lifting mechanisms for lifting a shell ring to be separated from a longitudinal shell ring conveying mechanism, an automatic grounding device, an inner expanding rounding device and a shell ring welding circular seam back protection device, wherein a welding station used for butt welding of two shell rings is arranged in the middle of the longitudinal shell ring conveying mechanism, a special welding machine is arranged above the welding station, the lifting mechanisms are arranged on the two sides of the welding station, and transmission mechanisms used for circumferential rotation of the shell rings are arranged on the lifting mechanisms, and the automatic grounding device comprises a fixed base mounted in the middle of the longitudinal shell ring conveying mechanism, and the inner expanding rounding device extends into the shell ring to calibrate a shell ring connector. By using the device, the shell ring assembling precision can be improved, the shell ring welding quality and efficiency are improved, a large amount of labor cost is reduced, and the working intensity is reduced.

Description

technical field [0001] The invention relates to the technical field of pressure vessel welding, in particular to a pressure vessel automatic assembly welding device and an assembly welding method. Background technique [0002] In the pressure vessel manufacturing industry, welding has always been one of the most important links in the manufacturing process. At present, in the production process, it is generally necessary to lift the barrel section by driving, put it on the roller frame, and manually adjust the longitudinal seam of the barrel section to the highest point. In order to carry out longitudinal seam welding, this mode requires more manual participation, and there are certain risks in crane hoisting and low work efficiency; [0003] In the production welding process, for the cylindrical joints of the tubular structure, the girth welding after the assembly needs to be welded in combination with the rotation of the roller frame. Before welding, it is necessary to man...

AI Technical Summary

Problems solved by technology

Generally, the back weld protection cover can only be manually held up inside the barrel joint, which consumes a lot of manpower. Since the inside of the barrel joint is designed with an anti-wave plate device, it is very inconvenient for personnel to enter and exit, and the welding time of the circular seam is relatively long. The physical strength of the workers is also a big test, and there are also certain hidden dangers to personal safety. The back protection effect of the overall welding seam is not ideal

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