Novel gamma ray detection device

Abstract

The invention relates to a novel gamma ray detection device. The novel gamma ray detection device comprises a gamma ray inspection machine, a source conveying pipe, a focal length adjusting pipe, a directional exposure head and a lead plate shielding ring, wherein one end of the source conveying pipe is connected with the gamma ray inspection machine, and the other end of the source conveying pipe is communicated with the directional exposure head; the focal length adjusting pipe is screwed to the lead plate shielding ring, and the directional exposure head is located in the lead plate shielding ring so as to irradiate a to-be-inspected position of a to-be-tested pipeline; the outside of the to-be-tested pipeline is fixedly sleeved with the lead plate shielding ring, and first lead rubber for packaging two sides of the to-be-inspected position of the to-be-tested pipeline is arranged between the lead plate shielding ring and the to-be-tested pipeline; the outsides of the source conveying pipe and the focal length adjusting pipe are coated with second lead rubber. According to the novel gamma ray detection device, the radiation range can be effectively narrowed, the safety performance is relatively high, the use is relatively convenient, and particularly, the radiation level out of range of 2m can be basically in a safety 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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