Translational pipe CT detection device and detection method thereof

Abstract

The invention discloses a translation type tube CT detector and a detection method thereof. The translation type tube CT detector comprises a ray generator, a data collector and a control and image processing system, wherein the ray generator and the data collector are connected with the control and image processing system. The translation type tube CT detector further comprises a translation mechanism comprising a guide rail and a slider, wherein the guide rail is parallel to an object tube and is fixed relatively, the slider is arranged on the guide rail in a horizontal fixation and longitudinal slide type, the ray generator and the data collector are fixed relatively to the slider at tow sides of the object tube. The invention is used to detect fixed tubes, which can synchronously scan and iterative reconstruction, to improve detection efficiency and improve object image quality. The translation type tube CT detector has compact structure, small volume and low production cost, and utilizes segment online rolling type multi-process parallel acceleration iterative reconstruction algorism to reconstruct sectional or three-dimension images, having the advantages of high detection speed, non-overlapped image, eliminated insertion of tubes and eliminated rotation.

Description

technical field [0001] The invention relates to a pipeline flaw detection device, in particular to a translational pipeline CT detection device and a detection method thereof. Background technique [0002] Pipeline inspection is an important maintenance procedure in petrochemical, chemical and electric power industries. It is related to the safe operation of the device and is an important means to avoid safety accidents due to pipeline welds, corrosion, substrate shedding, and cracks. [0003] In the prior art, the non-destructive testing method is generally used for the pipelines used online, and the non-destructive testing does not require disassembly and assembly of the pipeline, and the method is fast and convenient; Real three-dimensional imaging; some non-destructive testing methods install the X-ray generator in the pipeline to be inspected, which is not suitable for the inspection of closed pipelines; some need to move the pipeline to be inspected, which is not pract...

AI Technical Summary

Problems solved by technology

In this method, the ray generating device and the ray detecting device are fixed, and the object is scanned in a straight line; this is not feasible for the fixed pipeline; in addition, because the scanning time of the pipeline is long, if the scanning is completed After time-consuming iterative reconstruction, the time efficiency of detection is not high

Since the projection data of the object to be inspected is incomplete in the linear scanning mode, the quality of the object image reconstructed by the convolution back projection algorithm is not high.

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