Full-automatic detection apparatus suitable for multi-diameter pipe welding seam

Abstract

The invention provides an automatic detection device suitable for multi-diameter pipeline welding lines. A carrier dolly module (3) of the invention is arranged on a flexible track module (1); a scanner module (2) is fixed on the upper part of the carrier dolly module (3) through a vertical plate (8) and a horizontal plate (9); a probe combination module (4) is fixed on the lateral side of the carrier dolly module (3) through a tracking module (5); an encoder (6) is fixedly arranged on an angle adjusting block (3-4) of the carrier dolly module (3); and a motor (7) is fixedly arranged on a reduction gearbox (3-7) of the carrier dolly module (3). The invention can be applied to the diameter welding line detection of a series of pipelines; the efficiency of the detection technique of the invention in the pipeline girth welding line non-destructive detection is much higher than that of manual ultrasonic detection; and the invention is obviously superior in detection speed, environmental radiation pollution reduction and labor intensity decrease.

Description

(1) Technical field [0001] The invention relates to a weld seam detection device, in particular to an ultrasonic detection device for pipeline weld seam. (2) Background technology [0002] At present, the widely used flaw detection method in China is still manual flaw detection, and its operation process is quite complicated. According to the shape of the weld, ultrasonic probes with different angles are required, and the position is constantly moved to ensure the incident angle and position of the ultrasonic beam. It is labor-intensive and low-efficiency to judge the nature of weld defects by waveform. In many cases, it needs to rely on the experience of the operator, which is easy to cause missed and misjudgment. In recent years, some multi-channel ultrasonic flaw detection instruments have appeared. Using multi-channel ultrasonic flaw detection instruments can realize multi-beam flaw detection at the same time, but because the angle adjustment is not flexible enough (the ...

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Problems solved by technology

[0002] At present, the widely used flaw detection method in China is still manual flaw detection, and its operation process is quite complicated. According to the shape of the weld, ultrasonic probes with different angles are required, and the position is constantly moved to ensure the incident angle and position of the ultrasonic beam. The wave form is used to judge the nature of weld defects, which is labor-intensive and low-efficiency. In many cases, it needs to rely on the experience of the operator, which is easy to cause missed and misjudgment

In recent years, some multi-channel ultrasonic flaw detection instruments have appeared. Using multi-channel ultrasonic flaw detection instruments can realize multi-beam flaw detection at the same time, but because the angle adjustment is not flexible enough (the probe model still needs to be changed), the position movement is inconvenient, and it is difficult to realize automation. Still can not meet the requirements of mass weld flaw detection

[0003] Most of the existing pipeline flaw detection devices are used to detect flaws inside the pipeline, while the devices for ultrasonic flaw detection on the outer surface of the pipeline have complex structures, cannot perform good positioning, have low detection accuracy, are not easy to realize full automation, and some The device is only for a certain type of pipe diameter, and cannot be widely used in various pipe diameters

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