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Nuclear power plant valve diaphragm maintenance method

A technology for nuclear power plants and valves, applied in nuclear power plant auxiliary equipment, nuclear power generation, greenhouse gas reduction, etc., can solve the problems of long maintenance time of valve diaphragms, achieve the effect of improving function recovery ability, improving reliability, and reducing working hours

Active Publication Date: 2021-11-19
LINGDONG NUCLEAR POWER +5
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for maintaining valve diaphragms in nuclear power plants, so as to solve the technical problem that the maintenance time of valve diaphragms in the prior art is too long

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  • Nuclear power plant valve diaphragm maintenance method

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Embodiment Construction

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0046]It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations ...

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Abstract

The invention relates to the field of nuclear auxiliary cooling water systems in nuclear power plants, and discloses a method for maintaining valve diaphragms in nuclear power plants, including isolating the pipeline area to be maintained in the nuclear power plant. The pipeline area to be maintained includes a main pipeline, several branch pipelines, and working point pipelines. The pipeline is connected, the working point pipeline is connected with the main pipeline, and the working point valve is set on the working point pipeline; open the working point valve, and judge whether the water output of the working point valve is less than the preset water outlet threshold; if the water output of the working point valve is less than the preset Water outlet threshold, maintain the valve diaphragm of the designated valve in the pipeline area to be maintained according to the preset maintenance program. The method provided by the present invention realizes the drain-free maintenance of the valves in the pipeline area to be maintained, greatly improves the working efficiency of maintenance, reduces the working time of maintenance, and can also improve the function recovery of the cooling water system of the equipment in case of emergency capacity, and improve the reliability of the cold source of the spent fuel pool.

Description

technical field [0001] The invention belongs to the technical field of nuclear auxiliary cooling water systems of nuclear power plants, and more specifically relates to a method for maintaining valve diaphragms of nuclear power plants. Background technique [0002] In order to ensure the safe and efficient operation of nuclear power plants, the valve diaphragms of nuclear power plants need to be overhauled at regular intervals. These valve diaphragms are mainly set in the branch pipes of the cooling water system of the unit equipment of the nuclear power plant. These branch pipes are connected to the main pipe. [0003] In the prior art, when overhauling the instrumentation equipment of a nuclear power plant, it is necessary to close the valve on the main pipeline, empty the fluid in the pipeline, and then maintain the valve diaphragm. However, due to the complex arrangement of the branch pipelines connecting the nuclear power plant with the main pipeline, and the long pip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/08F17D1/14G21D1/02G21D1/04
CPCF17D1/08F17D1/14G21D1/02G21D1/04Y02E30/00
Inventor 黄权泉李积前何强
Owner LINGDONG NUCLEAR POWER
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