Method for completely checking pressure pipeline with heat preservation function without stopping running

Abstract

The invention provides a method for completely checking a pressure pipeline with a heat preservation function without stopping running. The method comprises the following steps of: (1) determining a key erosion detection measurement part of the pressure pipeline with the heat preservation function by using an infrared thermal imaging technology; and (2) detecting the part to be detected by using an x-ray real-time imaging technology. According to the method for completely checking the pressure pipeline with the heat preservation function without stopping running, the problem about detection for welding quality of a welded joint of the similar pipeline and selective examination and measurement for residual thickness of the pipeline is solved by using the infrared thermal imaging technology and the x-ray real-time imaging technology; therefore, the requirement of checking without stopping running can be met, and the work efficiency can be improved.

Description

technical field [0001] The invention relates to a non-stop comprehensive inspection method for a pressure pipeline with heat preservation. Background technique [0002] "Regulations for Periodic Inspection of Industrial Pipelines in Use" (Trial) requires non-destructive testing of welded joints of pipelines and random inspection of remaining thickness of pipelines in the comprehensive inspection. Inspection of undercut and misalignment of pipe welds and random inspection of remaining thickness of pipes are difficult inspection points. [0003] Conventional X-rays are more difficult to detect welds of pipes with insulation, because the position of welds in pipes cannot be judged. For some special media, such as liquid ammonia, which also has an absorption effect on X-rays, the quality of imaging cannot be known in time after detection, and the detection efficiency is low. [0004] X-ray real-time imaging technology has been widely used in various industries. The mandatory ...

AI Technical Summary

Problems solved by technology

[0003] Conventional X-rays are more difficult to detect the welds of pipes with insulation, because the position of the welds of the pipes cannot be judged

For some special media, such as liquid ammonia, which also has an absorption effect on X-rays, the quality of the imaging cannot be known in time after detection, and the detection efficiency is low

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