Neutron radiation monitoring device

Abstract

The invention relates to the technical field of radiation monitoring, in particular to a neutron radiation monitoring device, which comprises a neutron detector, a shielding transmission cable, a penetration piece and a signal processing unit, wherein the output end of the neutron detector is connected with the shielding transmission cable through a connector; the input end of the signal processing unit is connected with the shielding transmission cable through a connector; the penetration piece is arranged between the neutron detector and the signal processing unit, and the two ends of the penetration piece are connected with the shielding transmission cables on the two sides through the three coaxial cable connecting devices respectively. Electronic components are prevented from being damaged in severe environments such as high temperature, high humidity and high radioactivity, the situation that the performance of a detector is affected or damaged due to overall deformation caused by softening of a slowing-down absorbing material under an ultrahigh temperature condition is avoided, and the problem of large noise introduced in a signal measurement and transmission process is solved, and the anti-interference capability of signal extraction and processing is enhanced.

Description

technical field [0001] The present application relates to the technical field of radiation monitoring, in particular to a neutron radiation monitoring device. Background technique [0002] In recent years, the international ionizing radiation standards have stricter restrictions on ionizing radiation, and the ionizing damage caused by neutron radiation cannot be ignored. In addition, the newly revised international and national radiation protection standards will neutron quality factor (the degree of harm to biological tissues) The average increase has doubled, and the relevant functional management departments of the military and civilians in our country have also paid more attention to radiation safety. Therefore, it is necessary to strengthen the accurate monitoring of neutron radiation, and timely and accurately discover related nuclear radiation safety hazards (such as water loss in water tanks, etc.) ), so that countermeasures can be taken as soon as possible. [0003...

AI Technical Summary

Problems solved by technology

[0005] During nuclear emergency rescue, nuclear accidents and neutron monitoring in military reactor compartments, there will be harsh environments such as high temperature, high humidity, and high radioactivity, and it is still necessary to continuously monitor the neutron dose rate level in the reactor compartment and upload the measurement information To the main control unit, to provide necessary and reliable radiation monitoring data for judging whether the reactor is shut down, judging and evaluating the severity of the accident, formulating the accident handling plan, and evaluating the consequences of the accident. In harsh environments such as high temperature, high humidity, and high radioactivity, The electronic components of the existing neutron radiation monitoring devices will cause great damage. The polyethylene moderator material will soften or even melt due to its low melting point. Most of the commonly used neutron radiation detectors will fail or be irreversibly damaged.

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