Radiation source position detection device

A detection device and radioactive source technology, applied in the field of nuclear chemical industry, can solve the problems of accidental exposure of staff, inability to accurately determine the position of the neutron source, and jam of the neutron source, so as to achieve easy construction and reduce accidental exposure to personnel. Exposure risks, wide-ranging effects

Active Publication Date: 2019-06-14
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
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Problems solved by technology

However, due to the influence of the diameter, length, and layout of the transmission pipeline, the neutron source may be stuck in the transmission pipeline, resulting in the inability to accurately determine the position of the neutron source, resulting in accidental exposure of workers

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] In order to detect the position of the neutron source in the source tank, a technical solution is to arrange a proximity switch on the neutron source path 14 of the neutron source system powered by pneumatic transmission. However, although a number of proximity switches are added to the neutron source transmission pipeline to track the position of the neutron source passing through the transmission pipeline, due to the influence of the sensitivity of the proximity switch itself and the pressure of the compressed air, the control of the neutron source by the proximity switch is limited. The location poses certain difficulties. When the neutron source passes the position of the proximity switch, the proximity switch can respond quickly, and judge whether it passes the position through its voltage change (step change). However, in the specific pr...

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Abstract

The invention discloses a radiation source position detection device, comprising a source storage tank, a position tracking assembly for detecting a position of a neutron source from the source storage tank, and a photoelectric photomultiplier assembly. The photoelectric photomultiplier assembly is set close to the source storage tank, so the position of the neutron source is judged according to count change of the photoelectric photomultiplier assembly. The device has the beneficial effects that whether the neutron source returns back to the source storage tank successfully or not is judged according to the count change of the photoelectric photomultiplier assembly, through matching with the position tracking assembly, a judgment probability can be effectively improved, and a risk that personnel are irradiated accidently is reduced. The device is easy to set up, is high in portability and is wide in application.

Description

technical field [0001] The invention relates to the field of nuclear chemical industry, in particular to a radiation source position detection device. Background technique [0002] Radioisotope neutron sources have the advantages of small size, simple structure, and portability, and have been widely used in many scientific research fields such as instrument measurement, neutron photography, reactor start-up, nuclear fuel inspection, and radiation breeding. However, neutrons are a kind of ionizing radiation with strong penetrating ability. When using neutron sources, protection from external radiation must be considered to reduce the dose received by workers. [0003] During non-irradiation work, the neutron source must be placed in the storage tank, and the shielding structure of the storage tank provides the necessary protection to reduce the exposure dose of relevant personnel and ensure personnel safety. [0004] At present, a relatively safe way to move the neutron sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/00
Inventor 刘东海章秩烽张巍朱庆福罗皇达
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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