Special tool for quality inspection of weld joints in pipelines

An internal weld and quality inspection technology, applied in the direction of optical testing for defects/defects, can solve the problems of long pipelines, inability to accurately find the position of the weld, and inability to judge the quality of the weld to achieve the effect of improving efficiency

CN109752380APending Publication Date: 2019-05-14SHANGHAI BAOYE GRP CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-05-14

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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.
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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...

Examples

Embodiment Construction

[0013] Example figure 1 As shown, the special tooling of the present invention for the inspection of the internal weld seam of the pipeline includes two discs 1, an endoscope 2 and a long screw 3, and the two discs 1 are arranged in parallel at intervals and have a diameter smaller than that of the inner ring of the pipeline. The two discs 1 have through holes 11 equidistantly spaced from each other, and the long screw 3 penetrates through the through holes 11 on the two discs 1 and uses nuts 4 to fix the positions of the two discs 1. The endoscope 2 is clamped between the two discs 1 and the lens direction is consistent with the radial direction of the discs 1 .

[0014] Preferably, there are at least three through holes 11 on the surface of the two disks 1 , and there are at least three long screws 3 .

[0015] Preferably, the two discs 1 are wooden discs with a distance of 200 mm. The wooden disc prevents the tooling from scratching the inner wall of the pipeline when it ...