Industrial online CT radiation shielding device and CT detection equipment

Abstract

The invention provides an industrial on-line CT radiation shielding device and CT detection equipment, and aims to break through the limitation that a traditional industrial CT self-shielding device is small in size of a detectable part, not suitable for on-line detection and incapable of changing the shielding amount. The shielding device can realize flexible adjustment of the radiation safety requirement and the shielding thickness in the industrial CT on-line detection process, meanwhile, the detection requirement of a large-size detection piece can be met. The device comprises a skin, a main body frame, N shielding layers and a shielding layer adjusting assembly, the main body frame is provided with multiple layers, the multiple layers of main body frames are sequentially nested from inside to outside, and the main body frame is provided with a mounting rail; the N shielding layers are installed in the installation rails of the main body frame, and the shielding layers are fixed to the main body frame through the shielding layer adjusting assemblies. The skins are arranged on the inner side and the outer side of the main body frame and used for wrapping the main body frame, openings are formed in the two sides of the main body frame and the skins, and lead rubber is arranged at the openings to prevent radiation leakage.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing, and in particular relates to an industrial online CT radiation shielding device and CT testing equipment. Background technique [0002] Industrial CT is the abbreviation of industrial computerized tomography technology, which is a nuclear imaging technology applied in industry. Inevitably involved in the process of radiation protection issues. [0003] At present, radiation protection methods include self-shielding or radiation protection rooms for protection. Self-shielding design, that is, the shielding body and the main structure of the X-ray flaw detection device are designed and manufactured integrally, and its detection parts and motion systems are all in the shielding body. The shielding body can reduce the X-ray dose generated by the device to below the specified dose limit. There is no need for additional shielding when approaching and in any working mode, the human bod...

AI Technical Summary

Problems solved by technology

The radiation protection room is to control the radiation dose by building a lead room. People can enter the lead room without turning on the radiation source. However, the cost of constructing the shielding room is high, and the self-shielding method is more Flexible and effective, so at present, self-shielding method is mostly used for radiation shielding of industrial CT

[0004] When adopting the self-shielding method for industrial CT radiation protection design, the size of the detectable parts is small because the shielding body contains detection parts and motion systems, and online detection cannot be realized. In addition, although the calculation is reasonable, a certain shielding layer thickness It can meet the requirements, but once the calculation is unreasonable and the radiation dose is higher than the national standard or the equipment is modified with a higher voltage ray source, the shielding body cannot reduce the X-ray dose generated by the device below the specified dose limit. radiation can affect the environment and workers

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