Dual-purpose collimating device with seam

Abstract

The invention relates to the technical fields of high-energy lossless testing (such as radiography, industrial CT, etc.), and discloses a dual-purpose collimator with a clearance. The collimator comprises two pairs of collimating blocks that can respectively move horizontally and vertically, wherein, when the pair of collimating blocks that can move vertically move to relatively shut horizontally, a horizontal clearance is formed between the pair of collimating blocks that can move vertically, wherein, the horizontal clearance can be formed by a small groove milled in the collimating blocks that can move vertically or a gasket with certain thickness arranged on two corners of the collimating blocks that can move vertically. The dual-purpose collimator of the invention achieves a purpose that the collimator can precisely realize small-sized horizontal clearances when being used for industrial CT, have high precision, good repeatability as well as no influences on the application of the collimator in radiography simultaneously under a condition of hardly affecting production cost by designing fixed horizontal clearances on the collimating blocks of the common collimator with a simple function of a two-dimensional definite radiation filed.

Description

technical field [0001] The invention relates to the technical fields of high-energy non-destructive testing such as radiography and industrial CT, in particular to a dual-purpose collimator with a slit. Background technique [0002] The field of high-energy non-destructive testing with high-energy ray sources as radiation sources, including radiography and industrial CT. The source of high-energy radiation is usually an accelerator, and a small number of systems use high-energy radionuclides. Radiography is to expose the inspected object to the radiation field of the high-energy ray source for a period of time, and obtain the shape / structure information of the object through the photosensitive film on the backlight side; industrial CT is to place the inspected object between the high-energy ray source and the detector. During this period, the ray intensity detected by the detector is then processed by computer to obtain the structural information of the object, and a very d...

AI Technical Summary

Problems solved by technology

Since the dimensional accuracy of the irradiation field is not high in radiography, the accuracy and coordination of the motors, gears, transmission belts, lead screws and other moving mechanisms that lead the collimation block in this type of collimator are not high. The width of the horizontal seam is difficult to operate, and the accuracy and repeatability of the adjustment process are poor, which has a certain negative impact on the image quality

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