Ultrasonic phased array pipeline ring weld detection mechanism capable of moving stably

Abstract

The invention provides an ultrasonic phased array pipeline ring weld detection mechanism capable of moving stably. The ultrasonic phased array pipeline ring weld detection mechanism comprises a body, a magnetism pinch roller mechanism, a fastening device, a left flaw detection probe support, a right flaw detection probe support, a left flaw detection probe and a right flaw detection probe. The body comprises a base, a first sliding rod, a second sliding rod, a sliding rod jackscrew, a left and right sliding rod connecting frame, magnetism wheels and an axle. The fastening device is used for fastening the body to a pipeline to be detected, the magnetism pinch roller mechanism is arranged between the first sliding rod and the second sliding rod, and the flaw detection probe supports are connected with the flaw detection probes and assist the flaw detection probes in carrying out detection work on welds of the pipeline to be detected. The mechanism can stably rotate around the flaw detecting pipeline in pipeline ring weld detection work, and thus it is avoided that a detection result is influenced by accidental situations such as vibration; thus, the mechanism has the advantages of being wide in application range, high in flaw detection sensitivity and detection efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of pipeline flaw detection, in particular to a smoothly movable ultrasonic phased array pipeline girth weld detection mechanism. Background technique [0002] At present, in the installation and construction of refining and chemical equipment, the amount of non-destructive testing of butt girth welds of large thick-walled and large-diameter pressure pipes is increasing; using A-type pulse ultrasonic testing, the defect display is not intuitive, and the defect shape cannot be displayed. And defect measurement is greatly affected by human factors, and the repeatability of defect detection and evaluation is poor; X-ray detection is more and more difficult or even impossible to detect (insufficient penetration); gamma-ray detection is difficult for safety protection (some places are not allowed to use), detection The time is long, the detection time is limited, and the half-life is short. Therefore, not only the...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an ultrasonic phased array pipeline girth weld inspection mechanism that can move smoothly. The mechanism can rotate around the flaw detection pipeline smoothly during the pipeline girth weld inspection work, and at the same time solves the problem of rapid diameter reduction. During pipeline flaw detection, the detection equipment cannot be effectively fixed; the equipment has the advantages of wide application range, good stability, and high flaw detection sensitivity.

Images