Large-bore pipe ring welded seam phased-array ultrasonic automatic detection system

Abstract

The present invention discloses a phased-array ultrasonic wave automatic detection system for detecting large-bore pipe circumferential weld. Said system mainly includes main control portion, specialpipeline creeper portion, ultrasonic wafer array probe portion, upperseat machine intelligent graphic processing portion, cable portion and special assembly car portion. The diameter range of pipe which can be detected by said system is large, from 4 inches to 56 inches.

Description

Background technique [0001] In the inspection of pipeline welding quality, traditional inspection mainly uses visual inspection, radiographic inspection, manual ultrasonic inspection, etc. Among them, visual inspection is the earliest method used, and it is generally used for the weld quality of small-diameter pipes. For the circular butt welds of large-diameter pipes (generally referring to pipe diameters of more than 1 meter), it will be very difficult to use radiographic inspection. The inspection personnel operate the X-ray inspection machine to emit X-rays, take pictures of the quality of the welds, and then develop, fix, rinse, and dry in the dark room to obtain weld photos, and then judge the quality of the welds by special personnel. When this method is protected by a lead room in the laboratory, the health and safety of the staff needs to be paid attention to. However, in the case of pipeline construction in the field, without good protection measures, it will pose a ...

AI Technical Summary

Problems solved by technology

[0005] 1. The detection speed is slow, especially for the detection of pipeline girth welds, the detection speed is even slower, which seriously affects the progress of the projects involved

[0006] 2. The test results have subjective factors and are related to the level and responsibility of the operator

[0007] 3. It is very difficult to measure the depth direction of the defect or the height of the defect itself, so it is difficult to realize the engineering critical analysis using ECA

[0008] 4. Radiographic flaw detection has serious harm to human health. Excessive workload can cause human white blood cell drop and even lead to leukemia

[0009] 5. In the detection of weld seam quality of pipes with different wall thicknesses, pipe diameters and materials, there are difficulties in system adjustment, narrow adaptability of probes and heavy equipment

Images