Redundant system of pool type heat supply reactor refueling machine and switching method

A redundant system and redundant switching technology, which is applied in the direction of reactor fuel elements and hardware redundancy for data error detection, reactors, etc., to improve reliability, overcome failure probability, improve service life and reliability

Pending Publication Date: 2020-11-17
CHINA NUCLEAR POWER OPERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a redundant system and switching method for a pool heating stack refueling machine, which solves the problem of reliable and real-time operation of the refueling machine, ensures that the refueling machine does not fail during the refueling operation, and ensures safety ,Stable operation

Method used

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  • Redundant system of pool type heat supply reactor refueling machine and switching method

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Effect test

Embodiment 1

[0030] A method for redundant switching of a pool-type heating stack refueling machine, the method comprising:

[0031] S1. Detect the status of the overall system equipment;

[0032] Take the currently active programmable logic controller as the control center to detect the faults of the active equipment in the redundant system;

[0033] S11. Monitoring the equipment fault status of the equipment with the main body fault diagnosis function;

[0034] For devices with on-body fault diagnosis functions such as programmable logic controllers, human-computer interaction devices, and drivers, between the first programmable logic controller and the second programmable logic controller, the effective human-computer interaction device and the effective Periodic state information exchange is carried out between the PLCs, between the valid driver and the valid PLC, and after the valid PLC receives the fault information of the valid device or the communication fails, it sends out the fa...

Embodiment 2

[0042] A method for redundant switching of a pool-type heating stack refueling machine, the method comprising:

[0043] S1. Make statistics on the continuous working time and cumulative working time of the overall system equipment;

[0044] Use the active programmable logic controller to make statistics on the continuous working time and cumulative working time of each active equipment in the system;

[0045]S2. When the continuous working time of the active equipment exceeds the set threshold, or the difference between the cumulative working time of mutually redundant equipment exceeds the set threshold, switch the redundant equipment;

[0046] S21. Perform redundant device switching when the continuous working time of the effective device exceeds the set threshold;

[0047] S22. Calculate the difference between the cumulative working time between the two mutually redundant devices. If the difference is greater than the set threshold and the currently effective device is not...

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Abstract

The invention relates to the technical field of reliability of pool type heat supply reactor refueling machines, and particularly discloses a redundant system of a pool type heat supply reactor refueling machine and a switching method. The system comprises a power supply, man-machine interaction equipment, programmable logic controllers, sensors and motors, and the man-machine interaction equipment is connected with the plurality of mutually redundant programmable logic controllers through Ethernet to form a local area network; a plurality of sensors which is redundant to each other and connected with each programmable logic controller at the same time; each programmable logic controller is connected with a motor on each actuating mechanism in the refueling machine through a bus; A plurality of mutually redundant power supplies is connected to a redundant system to supply power to other equipment. According to the system and the switching method, hardware resources can be fully utilized, obvious binding between system units is broken through, unit equipment is freely selected according to the fault state to form a complete system, and the reliability of the refueling machine is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of reliability of a pool type heating stack refueling machine, and in particular relates to a redundant system and a switching method of a pool type heating stack refueling machine. Background technique [0002] The pool heating reactor belongs to the low-temperature nuclear energy heating technology, which uses the energy generated by nuclear fission as the heat source to provide centralized heating to the city. The basic principle is to use deep water pressure to increase heating parameters, and at the same time rely on natural circulation to achieve heat exchange, which has the advantages of low cost, intrinsic safety, and cleanliness. [0003] Different from traditional pressurized water reactors, the pool-type low-temperature reactor refueling machine consists of a water loading and unloading machine and an underwater auxiliary loading and unloading platform. The above-water loading and unloading machi...

Claims

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Application Information

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IPC IPC(8): G06F11/16G21C19/20
CPCG06F11/16G21C19/20Y02E30/30
Inventor 刘涛钱艳平李莉刘强彭谊宏蒋兴福杨斌王俊兰明平良
Owner CHINA NUCLEAR POWER OPERATION TECH
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