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System and method for monitoring reactor core parameters of nuclear power plant

A parameter monitoring and nuclear power plant technology, applied in the fields of nuclear reactor monitoring, nuclear power generation, reactors, etc., can solve the problems of increasing the rupture of the bottom of the pressure vessel, inconvenient installation, post-maintenance, and large size, so as to reduce the space occupied by the equipment and eliminate the need for adjustment. The effect of checking the workload and measuring the reliability of the information

Inactive Publication Date: 2016-04-20
中广核工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above that the core measurement system used in the existing nuclear power plant core parameter monitoring system is large in size and has many components, which is not convenient for installation and later maintenance; due to the use of miniature fission chamber detectors, it can only be carried out periodically and intermittently The neutron flux in the reactor cannot monitor the neutron flux in the core in real time; at the same time, the measuring finger bushing is installed at the lower part of the pressure vessel, which increases the risk of rupture at the bottom of the pressure vessel in a severe accident
In addition, the water level monitoring of the pressure vessel adopts the differential pressure measurement method with a reference tube. This method is an indirect measurement, the measurement accuracy is low, and it is greatly affected by the environment. At the same time, the instrument adjustment process is complicated and inconvenient for later operation and maintenance personnel.

Method used

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  • System and method for monitoring reactor core parameters of nuclear power plant
  • System and method for monitoring reactor core parameters of nuclear power plant
  • System and method for monitoring reactor core parameters of nuclear power plant

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Embodiment 1

[0051] figure 2 A structural block diagram of a nuclear power plant core parameter monitoring system provided by an embodiment of the present invention. like figure 2 As shown, the nuclear power plant core parameter monitoring system includes: a measurement component 10 and a signal processing unit 20 electrically connected to the measurement component 10, wherein:

[0052] The measurement assembly 10 includes a plurality of first measurement assemblies 110 and a plurality of second measurement assemblies 120, and each first measurement assembly 110 and each second measurement assembly 120 respectively include a plurality of self-powered neutron detectors 111 for real-time To collect core neutron flux density signals, multiple self-powered neutron detectors are distributed axially and / or radially around the core of the nuclear power plant;

[0053] The signal processing unit 20 includes a core neutron flux density signal processing cabinet 21, which is used to receive the ...

Embodiment 2

[0077] Image 6 It is a schematic flowchart of a nuclear power plant core parameter monitoring method provided by an embodiment of the present invention. like Image 6 As shown, the core parameter monitoring methods of nuclear power plants include:

[0078] Step S1: Multiple self-powered neutron detectors in the measurement component collect core neutron flux density signals in real time.

[0079] Step S2: Send the core neutron flux density signal to the core neutron flux density signal processing cabinet in the signal processing unit.

[0080] Step S3: The core neutron flux density signal processing cabinet processes the received core neutron flux density signal.

[0081] Step S4: Send the processed core neutron flux density signal to the core online monitoring system.

[0082] Step S5: The online core monitoring system monitors the received processed core neutron flux density signal in real time.

[0083] Further, the nuclear power plant core parameter monitoring method...

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Abstract

The invention discloses a system for monitoring reactor core parameters of a nuclear power plant. The system comprises measurement assemblies and a signal processing unit, wherein the measurement assemblies comprise multiple first measurement assemblies and multiple second measurement assemblies, each of the first measurement assemblies and the second measurement assemblies comprises multiple self-powered neutron detectors for collecting reactor core neutron-flux density in real time, and the multiple self-powered neutron detectors are distributed in the axial direction and / or radial direction along the periphery of the reactor core of the nuclear power plant; the signal processing unit comprises a reactor core neutron-flux density signal processing cabinet, and is used for receiving reactor core neutron-flux density signals collected by each self-powered neutron detector, processing the reactor core neutron-flux density signals and sending the reactor core neutron-flux density signals to a reactor core online monitoring system, so that the reactor core condition is monitored in real time. According to the system, the integrated measurement assemblies are adopted, so that the space occupied by equipment is reduced, and later maintenance and replacement are facilitated; real-time continuous monitoring for in-reactor neutron flux can be realized, measurement information is more reliable, and the accuracy rate is high.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant core parameter monitoring, in particular to a nuclear power plant core parameter monitoring system and a monitoring method for measuring neutron flux density, temperature and pressure vessel water level in the nuclear power plant reactor core. Background technique [0002] For nuclear power plants, the neutron flux density and temperature of the core and the water level of the pressure vessel are very important parameters, which are closely related to nuclear safety. At present, the core neutron flux monitoring methods include miniature fission chamber detectors, pneumatic floating ball measurement systems, self-powered detectors, etc. [0003] In the existing core parameter monitoring system of nuclear power plants, the movable miniature fission chamber measurement system is generally used to measure the neutron flux of the core. composition. In the movable miniature fission chamber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/108G21C17/112G21C17/035
CPCG21C17/035G21C17/108G21C17/112Y02E30/30
Inventor 张睿曾力李天友杨浩田亚杰史觊汪伟彭华清陈卫华黄伟军江辉黄美良
Owner 中广核工程有限公司
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