Method and system for comparing main feed water flow quantity redundancy measurement channels of nuclear power plant evaporator

A technology for measuring channel and water supply flow. It is used in nuclear power generation, nuclear engineering, nuclear reactor monitoring, etc. It can solve problems such as increasing equipment maintenance, and achieve the effect of ensuring reliability, low implementation risk, and ensuring availability.

Active Publication Date: 2019-01-15
CHINA GENERAL NUCLEAR POWER OPERATION +2
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Problems solved by technology

[0003] Although the redundant design improves the reliability of equipment and functions, it also increases the maintenance of equipment

Method used

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  • Method and system for comparing main feed water flow quantity redundancy measurement channels of nuclear power plant evaporator
  • Method and system for comparing main feed water flow quantity redundancy measurement channels of nuclear power plant evaporator
  • Method and system for comparing main feed water flow quantity redundancy measurement channels of nuclear power plant evaporator

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Embodiment Construction

[0051] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0052] Based on the problems existing in the prior art, the present invention constructs a cross-comparison method for redundant measurement channels of main water supply flow in nuclear power plants. The results judge whether the measurement channel is abnormal or faulty, and the method does not intervene in the process channel and can maintain the normal function of the system and equipment, effectively improving the availability of important equipment and functions of the nuclear power plant.

[0053] Such as figure 1 As shown, it is a schematic structural diagram of a typical flow redundant measurement channel of a nuclear power plant, where MD1 and MD2 are two redundant measurement channels, and the main pipeline i...

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Abstract

The invention relates to a method and system for comparing main feed water flow quantity redundancy measurement channels of a nuclear power plant evaporator, wherein the method includes the followingsteps: S1, formulating cross comparison standards by an uncertainty root mean square method; S2, collecting real-time water flow measurement values of the main feed water flow quantity redundancy measurement channels; S3, carrying out averaging processing of collected water flow quantity measurement values, obtaining a measured average value of the main feed water flow quantity of the main feed water flow quantity redundancy measurement channels, and taking the measured average value of the main feed water flow quantity as the reference value; and S4, calculating all the real-time water flow measurement values and the determined reference value, and carrying out cross comparison of the calculation result and the cross comparison standards. The equipment functional availability and reliability and less maintenance activity investment can be ensured, and the abnormal or fault in the main feed water flow quantity redundancy measurement channels can be effectively detected.

Description

technical field [0001] The invention relates to the field of evaporators, and more specifically, to a method and system for comparing redundant measurement channels of main feedwater flow of a nuclear power plant evaporator. Background technique [0002] The initial design of nuclear power plants conforms to the principles of diversity, redundancy and independence, and uses the same, redundant or equivalent methods to measure the same measurement object. test object. [0003] Although the redundancy design improves the reliability of equipment and functions, it also increases the maintenance amount of equipment. Especially when there is a deviation in redundant measurement, how to effectively judge whether there is anomaly or failure in the measurement channel of the main feedwater flow has become an urgent problem to be solved in existing nuclear power plants. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a ...

Claims

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Application Information

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IPC IPC(8): G21C17/032
CPCG21C17/032Y02E30/30
Inventor 陈永伟犹代伦李东邱河文谢永靖索凌平宋迎冯文滔姜北薛震邹洪先
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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