Special tool for quality inspection of weld joints in pipelines

Abstract

The invention discloses a special tool for quality inspection of weld joints in pipelines. The tool comprises two discs, an endoscope and a long screw, wherein the two discs are alternately arranged in parallel and have diameters smaller than the inner diameters of the pipelines; through holes are equidistantly formed in the disc surfaces of the two discs; the long screw penetrates into the through holes in the disc surfaces of the two discs and the positions of the two discs are fixed by nuts; the endoscope is clamped between the two discs and the lens direction of the endoscope is consistentwith the radial directions of the discs. The tool is convenient to implement endoscopic inspection of butt weld joints in pipelines, and can drive the endoscope to move and rotate along the inner walls of the pipelines and rotate so as to find the positions of the weld joints and carry out observation accurately and clearly, thereby improving the efficiency of the inspection work.

Description

technical field [0001] The invention relates to a special tool for checking the quality of welds inside pipelines. Background technique [0002] After the pipe is butt welded, due to the long pipeline, it is impossible to observe the appearance of the butt weld inside the pipe and whether there are surface defects, so it is impossible to judge the quality of the weld. For pipelines with high requirements, ultrasonic waves are usually used to detect welds, while general pipelines usually use endoscopes to inspect the weld status inside the pipeline, but when the endoscope is placed directly inside the pipeline, it cannot accurately find the location of the weld and To observe the entire weld, it is necessary to drive the endoscope to move and rotate along the inner wall of the pipeline in order to find the weld and observe it accurately and clearly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a special tool f...

AI Technical Summary

Problems solved by technology

[0002] After the pipe is butt welded, due to the long pipeline, it is impossible to observe the appearance of the butt weld inside the pipe and whether there are surface defects, so it is impossible to judge the quality of the weld

For pipelines with high requirements, ultrasonic waves are usually used to detect welds, while general pipelines usually use endoscopes to inspect the weld status inside the pipeline, but when the endoscope is placed directly inside the pipeline, it cannot accurately find the location of the weld and To observe the entire weld, it is necessary to drive the endoscope to move and rotate along the inner wall of the pipeline in order to find the weld and observe it accurately and clearly

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