Ultrasonic nondestructive testing device and method for welding seam of steel pipe

Abstract

The invention relates to a steel pipe welding seam ultrasonic nondestructive testing device and a testing method thereof, and relates to the field of steel structure detection. The problem that an existing detection device is inconvenient to mount and dismount, and consequently the detection efficiency is low is solved. The ultrasonic nondestructive testing device for the steel pipe welding seam comprises a supporting base, a welding seam testing mechanism and a driving mechanism; wherein the welding seam detection mechanism and the driving mechanism are both arranged on the supporting base, the driving mechanism drives a horizontally-arranged pipeline to rotate with the center line of the pipeline as the axis so that the welding seam detection mechanism can detect welding seams on the peripheral wall of the pipeline; the welding seam detection mechanism comprises a detection ring movably arranged outside the pipeline in a sleeving mode and a plurality of detection heads used for detection; and the detection heads are arranged on the detection ring. The device has the advantages that the welding seam can be detected through the detection head, the driving mechanism is started to drive the pipeline to rotate, the detection head can comprehensively detect the welding seam on the pipeline, and detection can be completed after the pipeline rotates by a certain angle, so that the detection efficiency is improved.

Description

technical field [0001] The present application relates to the field of steel structure detection, in particular to an ultrasonic non-destructive detection device and detection method for weld seams of steel pipes. Background technique [0002] In urban construction, it is necessary to lay a large number of underground drainage pipes. The drainage pipes usually use large-diameter seamless steel pipes to form continuous pipes through welding. In order to ensure the quality of the connection between the steel pipes, the welding of the steel pipes Seam inspection. Non-destructive testing is a commonly used testing method, which means that the test piece can be tested without damaging the material and structure of the test piece. [0003] The Chinese patent document with the notification number CN113092582A discloses an ultrasonic non-destructive testing device and testing method for steel pipe welds, which includes a circular track, a fixing device for fixing the circular track...

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Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventors found the following defects: the device needs to be installed on the pipeline when detecting the weld seam of the pipeline. Since the structure of the device is relatively complicated, the process of installation and disassembly is relatively cumbersome. When it is necessary to inspect multiple welds of the pipeline, the labor intensity of inspectors is increased, and the inspection efficiency is low

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