Butt-joint pipeline internal welding seam treatment device

Abstract

The invention provides a butt joint pipeline internal weld joint treatment device. The butt joint pipeline internal weld joint treatment device comprises a rack, a walking device, a rotating device, a telescopic device and a grinding device. The tail end of the walking device abuts against the inner wall of the pipeline so as to bear the rack to move. When the rotating device is installed on the rack and located in the pipeline, the rotating axis of the rotating device coincides with the axis of the pipeline. The telescopic device is arranged on the rotating device, the coping device is arranged on the telescopic device, the telescopic direction of the telescopic device is perpendicular to the rotating axis of the rotating device, and the telescopic device is used for enabling the coping device to be close to or away from a welding seam in a pipeline. When the grinding device is aligned with a welding seam in the pipeline, the telescopic device enables the grinding device to make contact with the welding seam, and the rotating device drives the grinding device to rotate circumferentially so as to grind the circumferential welding seam in the pipeline. According to the technical scheme, the welding seam in the pipeline can be effectively ground, base metal is basically not damaged, the grinding amount and the mold repairing force can be effectively controlled, and grinding dead corners basically do not exist.

Description

technical field [0001] The present application relates to the technical field of pipeline welding, and in particular, to a device for processing internal welds of butted pipelines. Background technique [0002] After two circular pipes are butted by welding, there is often a problem of poor forming inside the pipe corresponding to the welding seam, so the welding seam in the pipe needs to be ground. [0003] For large-diameter pipes, due to the large internal space, the welder can directly drill into the inside of the pipe to grind the back of the weld, while for small-diameter pipes or pipes whose welds are far away from the end, it is difficult to perform manual work due to space constraints. sanded. [0004] At present, for the inner surface of the weld that cannot be reached by welders, the method of lengthening the grinding equipment is usually adopted, so that the welding seam inside the pipeline can be repaired and ground from a long distance by a grinding tool simil...

AI Technical Summary

Problems solved by technology

Its defects are more obvious, and mainly include the following points: 1) It is too far away from the grinding position, and it is difficult to accurately locate; 2) The field of view is limited, and it is difficult to observe accurately; 3) The distance between the grinding point of the grinding tool and the support point is too long, and the amount of grinding , The grinding strength and stability are difficult to control; 4) The movement during the grinding process is easy to damage the base metal around the weld; 5) There is a dead angle in grinding

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