Platinum self-powered reactor core gamma strength detection device

Abstract

The invention relates to a platinum self-powered reactor core gamma strength detection device. The device comprises an emitter, a shielding body and a collector which are sequentially arranged from inside to outside, wherein the emitter is made of a platinum metal wire and is used for absorbing neutrons and photons in the reactor and generating corresponding electrons; the shielding body is used for providing insulation performance for the emitter in a high-temperature environment of the reactor and does not interact with neutrons and photons in the reactor; and the collector is connected witha background processing system through a transmission cable and is used for sending the corresponding signal current generated by the collected electrons to the background processing system to monitor the neutron flux in the reactor. The invention has the beneficial effects that the neutron flux and gamma flux in the reactor are simultaneously detected, the signal feedback is fast, the response time is short, the detector can tolerate the high-temperature, high-irradiation and high-pressure environment in the reactor due to the arrangement of the shielding body, the stable operation time is long, the burnup of the emitter is low, the service life is long, and frequent shutdown and replacement are avoided.

Description

technical field [0001] The invention belongs to the technical field of reactor core core testing, and in particular relates to a platinum self-sufficient core gamma intensity detection device. Background technique [0002] At present, in the reactors established at home and abroad, self-supplied neutron detectors are generally used to monitor the neutron flux in the reactor. The neutron flux in the reactor is one of the important parameters reflecting the operating state of the reactor. Reactor shutdown provides extremely important parameter guidance. This type of neutron detector usually uses rhodium, vanadium, cobalt and other materials as emitters, which can measure thermal and fast neutron flux; in addition, self-powered gamma detectors are used in reactor The measurement of internal local power, the distribution of gamma power density in the reactor stack is similar to the distribution of neutron flux, and the operating status of the reactor can also be grasped by monit...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low sensitivity, short life and inconvenient analysis in the prior art, the present invention provides a platinum self-sufficient core gamma intensity detector, which has the characteristics of high sensitivity, longer service life and easy analysis.

Images