A flange defect automatic detection device and detection method

Abstract

The invention discloses an automatic detecting device for defects of a flange and a detecting method thereof; the automatic detecting device comprises a phased array probe and a phased array flow detector connected with the phased array probe, and further comprises a vertical lathe including a knife rest and a rotating chuck; the phased array probe is connected with the knife rest through a bracket; a positioning piece is mounted on the rotating chuck, and is used for fixing the flange to be detected on the rotating chuck and keeping a certain distance between the lower end surface of the flange to be detected and the rotating chuck; the phased array probe can be in contact with the upper and lower end surfaces of the flange to be detected by position adjusting. When the detection is carried out, detections to the top and the bottom are implemented respectively; the phased array probe annularly moves relative to the flange to be detected, and scans the section of the passing flange in a sector scanning manner. When the automatic detecting device and the detecting method detect the flange, the defecting result is not easily influenced by the human factor, the detecting efficiency is improved, the missing detection can be avoided, and the detecting result has the traceability; the automatic detecting device and the detecting method are specifically suitable for detecting the internal defects of the flange for a wind power tower cylinder.

Description

technical field [0001] The invention relates to a flange defect automatic detection device and a detection method, in particular to the detection of flanges for wind power towers. Background technique [0002] The technical standard for flanges used in wind power towers requires ultrasonic inspection after rough machining of the product. The surface of the product must be machined to a maximum roughness of Ra12.5 to ensure good acoustic coupling during ultrasonic inspection. [0003] Flanges for wind power towers must use a 2-4MHz longitudinal wave straight probe to conduct 100% inspection along the circumference of 360°, on two vertical surfaces (from the four planes of the flange, that is, the inner and outer circumferential surfaces of the flange, The upper and lower connecting surfaces of the flange) conduct ultrasonic testing for internal defects, and the results must meet the specified inspection standards. [0004] With the development of wind power, the requirements...

AI Technical Summary

Problems solved by technology

The detection conclusion only depends on the judgment of the operator at that time, and cannot be verified afterwards

[0007] High requirements for personnel testing level and experience, greatly affected by manual intervention, due to the impact of instrument accuracy or operating methods, it is easy to miss detection

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