Automatic detection device for polygonal thin-wall thin-long tubular product

Abstract

The invention relates to the technical field of nondestructive testing and particularly discloses an automatic detection device for a polygonal thin-wall thin-long tubular product. A storage table, avortex inner wall detection station and an ultrasonic and outer wall vortex detection station in the device are arranged side by side, and a detected tubular product can be moved among the storage table, the vortex inner wall detection station and the ultrasonic and outer wall vortex detection station by virtue of a translation arm; the vortex inner wall detection station can be used for clampingand rotating the detected tubular product and detecting the inner wall of the detected tubular product; and the ultrasonic and outer wall vortex detection station can be used for clamping and rotatingthe detected tubular product and detecting the outer wall and edges of the detected tubular product. According to the device, the ultrasonic and vortex combined detection of the thin-wall thin-long tubular product with an equilateral polygon section can be realized, and the comprehensive coverage of the inner wall, outer wall and edges of the tubular product can be realized; and after the tubularproduct is placed in an initial position, a series of actions of tubular product conveying, placement, mounting, detection, take-out, drying and the like can be automatically finished by the device,so that the automatic detection is realized, the detection efficiency is high, and the device is suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing, and in particular relates to an automatic testing device for polygonal thin-walled slender pipes. Background technique [0002] Thin-walled elongated metal pipes are difficult to manufacture, require high technology, and are prone to tiny defects on the surface. For pipes with special purposes, such as pipes used in nuclear reactors, after the manufacture is completed, non-destructive testing of the surface of the pipes is required to avoid safety hazards caused by the use of pipes with defects such as scratches and cracks. [0003] Circular pipes are the most common pipes. The current non-destructive testing devices for pipes are basically designed for circular pipes. For thin-walled pipes, in order to avoid additional deformation during detection, the pipe is usually stationary and the detection equipment moves. The main principle is: after the thin-walled pipe is positioned an...

AI Technical Summary

Problems solved by technology

[0004] For thin-walled and slender pipes with regular polygonal cross-sections, the existing automation equipment cannot meet their detection requirements. On the one hand, the cross-section of regular polygonal pipes has a sudden change in shape, and it is difficult to measure the circumferential direction of the outer surface like circular pipes. On the other hand, for special-purpose pipes, if you want to detect tiny defects on the surface, you need to implement combined ultrasonic and eddy current inspections. The inner wall surface, outer wall surface, and corners of the pipe must be covered. These It is difficult to complete the detection content at one station, and the equipment needs to have multiple detection stations. In order to improve the detection efficiency, the conversion and installation of pipes between different stations need to be automated, and in the process of pipe station conversion, it is necessary to avoid thin Deformation of wall tubing

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