A gamma ray detection device

Abstract

The invention relates to a gamma-ray detection device, which includes a gamma-ray flaw detector, a source tube, a focus adjustment tube, a directional exposure head and a lead plate shielding ring; one end of the source tube is connected to the gamma-ray flaw detector, and the output tube The other end of the source tube communicates with the directional exposure head through the focus adjustment tube; the focus adjustment tube is screwed on the lead plate shielding ring, and the directional exposure head is located inside the lead plate shielding ring so as to irradiate the pipe to be tested. Flaw detection position; the lead plate shielding ring is fixedly sleeved outside the pipeline to be tested, and the first lead rubber for wrapping on both sides of the flaw detection position of the pipeline to be tested is arranged between the lead plate shielding ring and the pipeline to be tested; Both the outside of the source tube and the focus adjustment tube are wrapped with second lead rubber. The invention can effectively reduce the radiation range, has higher safety performance, and is more convenient to use, especially can make the radiation level outside the range of 2m be basically in the safe range.

Description

technical field [0001] The invention relates to a non-destructive testing technology, in particular to a gamma ray testing device. Background technique [0002] Non-destructive testing is an indispensable and effective tool for industrial development. To a certain extent, it reflects the level of industrial development of a country, and its importance has been recognized. Radiographic testing is one of the non-destructive testing methods, and the commonly used methods include X-ray testing, gamma-ray testing, high-energy ray testing and neutron ray testing. For the commonly used industrial radiation inspection, X-ray inspection and gamma-ray inspection are generally used. [0003] For petrochemical plants, due to the corrosion of the working medium, harsh operating conditions such as high temperature and high pressure, and the erosion and wear of the equipment pipeline by the medium, it is inevitable that the wall thickness of the equipment will be thinned and the internal ...

AI Technical Summary

Problems solved by technology

Although the above-mentioned patent has the effect that the radiation dose received by the public is lower than the GBZ132-2008 regulation (2.5uSv / h) outside the range of 3 to 5 meters, it cannot control the safety range to be smaller, and there will still be problems for some jobs. certain inconvenience

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