Chemical equipment modular manufacturing pipe section prefabrication welding method

Abstract

The invention discloses a chemical equipment modular manufacturing pipe section prefabrication welding method. The method comprises the following steps that: S1, preparation work is conducted: a straight pipeline and a pipe fitting are subjected to tack welding to form a pipe section; and a pipe section welding seam prefabrication welding device is provided; S2, the pipe section is clamped by a clamping jaw, the straight pipeline is clamped by the clamping jaw, and the clamping position is located at the gravity center of the pipe section; S3, the pipe section is driven to move to the middle of the rectangular frame; S4, a rotating base and an autorotation power device drive the pipe section to rotate around the X axis and the clamping center line, so that the welding seam is located at the flat welding position 1G or the horizontal welding position 2G; and S5, a welding seam recognition camera recognizes the serial number and the welding position of the welding seam, and the welding robot moves to the welding seam position to conduct welding operation according to the recognition result. According to the pipe section prefabrication welding method, the position of the prefabricated pipe section can be adjusted, the welding seam is located at the flat welding or horizontal welding position 2G, and a welding robot can conduct automatic welding conveniently.

Description

technical field [0001] The invention relates to a prefabricated welding method for pipe sections, which is used in the modularized manufacturing of chemical equipment. Background technique [0002] The main process of modular production of chemical equipment is to pre-weld pipe sections of various shapes and orientations in the workshop, and then assemble and weld several pipe sections with pipe sections and equipment or containers to form several chemical sub-modules with certain technological characteristics. The modules are transported to the production site for assembly and butt welding to form a complete chemical plant production line. Since the main welding operations of this process are completed in the workshop, the welding quality can be well guaranteed. For process pipelines, it is generally necessary to prefabricate and weld straight pipes and fittings to form pipe sections, which facilitates the assembly and welding of subsequent sub-module process pipelines. A...

AI Technical Summary

Problems solved by technology

At present, the prefabricated welding of pipe sections mainly adopts manual welding by welders. Since the specifications and sizes of straight pipes are different, different clamping devices are required for clamping during welding. Due to manual welding by welders, the spatial position of the weld seam cannot be too high. Based on the above Some welds cannot be well adjusted to the flat welding or horizontal welding position 2G, so that the welder can only choose other welding positions, such as 5G, 6G vertical full-position welding, which increases the welding cost of the weld Difficulty, high requirements on welding skills of welders, high risk of welding quality

In addition, manual welding by welders is labor-intensive

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