Pressure pipeline ultrasonic detection device and detection method thereof

Abstract

The invention relates to the field of ultrasonic detection, and particularly relates to a pressure pipeline ultrasonic detection device and a detection method thereof. The pressure pipeline ultrasonic detection device comprises an instrument device, the instrument device is used for detecting defects of a pipeline, and the instrument device moves in the pipeline in the axial direction of the pipeline. A supporting mechanism is connected to the instrument device and comprises a plurality of telescopic assemblies, the telescopic assemblies surround the outer side of the instrument device, the ends, in the length direction, of the telescopic assemblies are connected to the instrument device, the other ends of the telescopic assemblies are rotatably connected with rolling wheels, the telescopic assemblies apply an elastic force to the rolling wheels, and the rolling wheels abut against the inner wall of a pipeline. The rolling wheels stretch out and draw back in the length direction of the telescopic assemblies. The detection device has the advantages that the possibility of jamming in the moving process of the instrument device is reduced, and therefore the pipeline detection efficiency of the instrument device is improved.

Description

technical field [0001] The present application relates to the field of ultrasonic testing, in particular to an ultrasonic testing device for pressure pipelines and a testing method thereof. Background technique [0002] Ultrasonic testing is also called ultrasonic testing, Ultrasonic Testing abbreviated UT, ultrasonic flaw detection, is one of the five conventional non-destructive testing methods. Time Of Flight Diffraction (TOFD) ultrasonic diffraction time-of-flight method is a method to detect defects by relying on the diffraction energy obtained from the "end angle" and "end point" of the internal structure of the test piece (mainly referring to defects). for the detection, quantification and localization of defects. [0003] The pipeline industry usually uses ultrasonic testing to detect the safety of pipelines to prevent pipeline rupture accidents during the process of conveying media. [0004] At present, the Chinese patent with the notification number CN104698088B ...

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that: when the pipeline is transporting the medium, there may be foreign matter adhered to the inner wall, and the wheels of the large-angle centralizer are easy to get stuck when passing the foreign matter on the inner wall of the pipeline, which reduces the detection efficiency of the pipeline

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