Detector adopting built-in liquid radioactive source for calibration

By using a built-in liquid radio source and liquid calibration source pipeline system in the detector, the problems of inconvenient operation of external radio sources and inability to replace built-in solid radio sources in the prior art are solved, and efficient and safe detector calibration is achieved.

CN119716965AActive Publication Date: 2025-03-28CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
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Patent Information

Application Number
CN202411685955.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-23
Publication Date
2025-03-28
Estimated Expiration
2044-11-23

AI Technical Summary

Technical Problem

In the existing detector calibration technology, the use of external radio sources has problems such as inconvenient operation, high risk and difficulty in calibration of multi-point efficiency. The built-in solid radio sources cannot be replaced and multi-point calibration.

Method used

The built-in liquid radio source is used to replace the solid radio source, and the injection and return of the liquid radio source is achieved through the liquid calibration source pipeline and piston system. The stepper motor is used to accurately control the number of liquid radio sources, so as to achieve remote operation and multi-point calibration.

Benefits of technology

The detector's detection efficiency of the liquid calibration source is improved, the activity of the liquid radioactive source is reduced, the structure and operation are simplified, and the safety and calibration efficiency are improved.

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Abstract

The invention relates to the technical field of nuclear radiation monitoring, and provides a detector adopting a built-in liquid radioactive source for calibration, which comprises a liquid calibration source pipeline, a liquid calibration source container, a piston, a transmission screw rod and the like, the liquid calibration source pipeline is of a coil pipe structure and is a passage and a container of a detector core body wrapped by a liquid radioactive source in the calibration process, the liquid calibration source container is a storage container of the liquid radioactive source in a non-calibration state, one end of the liquid calibration source container is connected with the liquid calibration source pipeline, and the piston is arranged in the liquid calibration source container. The liquid radioactive source can enter / retreat into the liquid calibration source container by pushing / pulling the piston, one end of the transmission screw is screwed into a tail end pipe body of the piston, and the other end of the transmission screw is connected with a transmission shaft of the stepping motor. The liquid radioactive source is adopted to replace a traditional solid radioactive source to serve as a built-in calibration source of the detector, the structure is simple, operation is convenient, the detection efficiency of the detector on the liquid calibration source can be greatly improved, and the activity of the needed liquid radioactive source is reduced.
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