A radiographic automatic detection device for girth welds of small cylinders

Abstract

The invention provides a ray automatic detection apparatus for small cylinder girth joint. The apparatus comprises a circumferential X-ray machine, a hoop, an elevation platform, a rotation head, a pick-up head, a semicircular angle ruler, a laser range finder, a laser positioning device, a T type laser range finder, a telescoping hinge, a front driving wheel, a position coder, a rear driving wheel, a base, a circumferential X-ray machine control cable, a moving vehicle data control cable, a cable guide wheel, a cable guiding control device, a motor, a cable collection roller, a ray machine controller, a moving vehicle controller, a circular scaled ruler, a film, and a rubber ring. The provided apparatus solves the problems that the detection efficiency of a common oriented X-ray machine is low and a circumferential X-ray detection ray machine is hard to move and position; the tedious steps such as cylinder hoisting, cylinder rotation, and the like, during the girth joint detection process are avoided; moreover, there is no special requirement on the detection location, and the high efficient and automatic detection of inner defects of multiple girth joints of cylinders with different sizes and small diameters is effectively realized.

Description

technical field [0001] The invention relates to a device and method in the field of X-ray detection, in particular to a ray automatic detection device for girth welds of small cylinders. Background technique [0002] X-ray inspection technology, as one of the non-destructive inspection technologies commonly used in weld internal defect detection, is widely used in aviation, aerospace, shipbuilding, petrochemical, special equipment manufacturing and other fields. At present, there are two kinds of transillumination methods for X-ray machines commonly used: one is directional X-ray machine, the transillumination radiation angle is relatively fixed, and the transillumination efficiency is low, which is mainly used in the detection of straight welds; the other is circumferential The X-ray machine, with its transillumination radiation angle of 360° and high transillumination efficiency, is widely used in the inspection of girth welds. At the same time, the application of the cir...

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Problems solved by technology

[0003] At present, there is no description or report of similar technology to the present invention, nor have similar materials at home and abroad been collected

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