Adjustable pipe center transillumination device

Abstract

The invention introduces an adjustable pipe center transillumination device, which comprises a radiation source, an exposure head, a source protection cavity, positioning bolts, a first bracket, a second bracket, and a radiation source conveying pipe. Each bracket comprises a hollow tube with thread, a reset spring, a front support ring, a rear support ring, three supporting arms, a fastening adjusting ring with thread; each supporting arm comprises a front supporting leg, a rear supporting leg and a guide wheel; two ends of each supporting leg are respectively fixed on shaft ends of a fixing ring and of the guide wheel; and the second bracket is located behind the first bracket, and connected with the first bracket through threads. The invention has good effect and efficiency improved by 10 times compared with an original double wall single image method, and can save a large amount of construction and detection time, greatly reduce the difficulty of a nondestructive detection, and ensure realization of the whole project goals due to the short radiation time; therefore, the device provided by the invention solves a bottleneck problem of technical pipeline detection construction for a high pressure hydrogenation device or a similar device.

Description

technical field [0001] The invention relates to a non-destructive testing equipment, in particular to an adjustable pipeline center transillumination device. Background technique [0002] Most of the hydrogenation pipelines in the high-pressure hydrocracking unit are high-pressure, high-temperature, and thick-walled pipelines, which require high construction technology, difficult welding, and difficult detection of weld seams. According to the current national norms and industry standards, this part of the pipeline requires 100% radiographic inspection. Taking a petrochemical company’s 10 million tons of oil refining and 2 million tons of ethylene project’s 2 million tons / year hydrocracking unit as an example, the high-pressure pipeline involved is 4262.58 meters, the maximum design pressure of the pipeline is 21.93MPa, and the maximum design temperature is 499℃. Involving ASTM A106 Gr.B, A335-P11, A335-P22, A312-TP321, 20#, etc.; the maximum pipe diameter is 660mm, and the...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an adjustable central transillumination device for pipelines, which provides an efficient and operable central transillumination detection device for pipeline construction with high technical requirements, thereby solving the problem of high-pressure hydrogenation devices or Bottleneck problem in process pipeline inspection and construction of similar devices

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