Portable ultrasonic flaw detection and scanning device capable automatically crawling on inner wall of pipeline and application method of portable ultrasonic flaw detection and scanning device

Abstract

The invention relates to a portable ultrasonic flaw detection and scanning device capable automatically crawling on the inner wall of a pipeline and an application method of the portable ultrasonic flaw detection and scanning device. The portable ultrasonic flaw detection and scanning device comprises a crawling device, a support structure, an automatic coupling flaw detection device and a remote control part and is characterized in that the crawling device moves linearly in the pipeline, an ultrasonic probe moves circumferentially along with a probe arm, the ultrasonic probe performs spiral scanning relative to the pipe wall, probe wave beams are constantly reflected and propagated along the circumferential direction of the pipe wall, the wave beams are reflected and returned along the original propagation path when the wave beams meet an axial flaw on the pipe wall, the returned wave beams are received by the probe and displayed on the screen of an ultrasonic instrument, water is used as the coupling agent, coupling water is sprayed to a to-be-detected part through a water outlet at a probe clamp, and good coupling is guaranteed sufficiently. The portable ultrasonic flaw detection and scanning device has the advantages that traditional outer wall ultrasonic flaw detection is changed into the inner wall ultrasonic scanning and flaw detection of the different-diameter pipelines, detection speed is increased, test blind areas area reduced, detection precision is increased, detection cost is lowered greatly, labor intensity is reduced, and the safety guarantee of an inspector is enhanced.

Description

technical field [0001] The invention relates to a pipeline ultrasonic flaw detection and scanning device, in particular to a portable pipeline inner wall automatic crawling ultrasonic flaw detection and scanning device and its use method. Background technique [0002] Oil pipeline is an important strategic resource material, and its quality is related to the safety of the entire oil well. At present, the inspection of oil pipelines in my country generally carries out on-site sampling and laboratory testing according to the indicators stipulated in product standards. Ultrasonic flaw detection is an indispensable procedure for inspecting internal defects of pipelines. For the ultrasonic flaw detection inspection of oil pipelines stacked and stacked in the freight yard, at present, cranes are generally used to unload them, put them on a flat inspection table, and several people apply coupling agent manually. The method of scanning is carried out. For sites without cranes, it i...

AI Technical Summary

Problems solved by technology

Ultrasonic flaw detection is an indispensable procedure for inspecting internal defects of pipelines. For the ultrasonic flaw detection inspection of oil pipelines stacked and stacked in the freight yard, at present, cranes are generally used to unload them, put them on a flat inspection table, and several people apply coupling agent manually. The method of scanning is carried out. For sites without cranes, it is only possible to manually climb up the stack and conduct sampling inspections outside the steel pipes. Since the steel pipes are stacked together, it is difficult to scan the entire surface of the steel pipes. Dangerous operation, there are scanning blind spots and other problems

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