Nuclear reactor core neutron and temperature detection device

A nuclear reactor and detection device technology, applied in the field of nuclear power, can solve the problems of high cost of use, short service life, low fuel consumption life, etc., and achieve the effect of small sensitivity deviation and long service life

CN107767974APending Publication Date: 2018-03-06STATE NUCLEAR POWER AUTOMATION SYST ENGCO
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-03-06

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Abstract

Relating to the technical field of nuclear power, the invention provides a nuclear reactor core neutron and temperature detection device, and solves the technical problems of reducing the sensitivitydeviation and improving the service life. The device comprises a plurality of reactor core detection components installed in a pressure vessel, the reactor core detection components are evenly laid along the radial direction of the pressure vessel, and each reactor core detection component includes at least one armored nuclear grade thermocouple thermometer for monitoring the reactor core fuel assembly outlet coolant temperature and multiple vanadium self-powered neutron detectors for monitoring the nuclear reactor core neutron fluence rate, also the vanadium emitters of the vanadium self-powered neutron detectors have an equal length, and the vanadium self-powered neutron detectors are laid from the bottom up in order along the axial direction of the pressure vessel. The device provided by the invention is suitable for a pressurized water reactor nuclear power station reactor core instrument system.
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Description

technical field

[0001] The invention relates to nuclear power technology, in particular to the technology of a nuclear reactor core neutron and temperature detection device. Background technique

[0002] The core instrumentation system of a nuclear reactor includes multiple core neutron temperature detector assemblies. The neutron temperature detector assembly is inserted into the high-temperature, high-pressure and strong-irradiated reactor pressure vessel through the top of the pressure vessel. Through reasonable design, the detector assembly The self-powered detectors in the reactor are arranged along the axial and radial directions of the reactor core, and the three-dimensional neutron fluence rate distribution of the core is monitored online, so as to realize the monitoring of the three-dimensional power distribution of the core.

[0003] Another main function of the core instrumentation system is to provide the core outlet coolant temperature signal for the reactor pro...

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Embodiment Construction

[0016] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention. All similar structures and similar changes of the present invention should be included in the scope of protection of the present invention. The commas in all indicate the relationship between and.

[0017] Such as figure 1 As shown, a nuclear reactor core neutron and temperature detection device provided by the embodiment of the present invention includes multiple core detection assemblies 2 installed in the pressure vessel 1, and each core detection assembly 2 is arranged along the radial direction of the pressure vessel. Evenly distributed;

[0018] Such as figure 2 As shown, the core detection assembly includes at least one K-type armored nuclear-grade thermocouple thermometer 22 for monitoring the temperature of the outlet coolant of the nuclear reactor core fuel ...