Treatment method for abnormal leakage of main pump in nuclear power plant
A treatment method and nuclear power plant technology, applied in nuclear power generation, power plant safety devices, greenhouse gas reduction, etc., can solve problems such as insufficient exhaust, abnormal leakage of the main pump, and fluctuation of the leakage flow of the second shaft seal of the main pump, etc., so as to solve the problem of leakage Abnormal, the effect of improving the phenomenon of frequent fluctuations
Active Publication Date: 2017-09-08
CHINA GENERAL NUCLEAR POWER CORP +1
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[0013] The purpose of the present invention is to provide a treatment method for the abnormal leakage of the main pump of the nuclear power plant, aiming at solving the problem that the leakage pipeline of the No. Problems with effective venting of leaky lines
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[0029] In order to make the object, technical solution and advantages of 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.
[0030] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0031] At present, the main pump of the nuclear power plant has abnormal leakage, which is mainly reflected in the fluctuation of the leakage flow of the No. 2 shaft seal of the main pump of the nuclear power plant, and sometimes even a high flow alarm, which seriously affects the monitoring of the operating personnel and the judgment of the No. 2 seal status. After investigation and analysis of the causes, it is determined that the main reason for the fluctuation of the ...
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The invention relates to the technical field of nuclear power station main pumps and discloses a method for treating a nuclear power station main pump leakage abnormity. A second shaft seal of a nuclear power station main pump is externally connected with a leakage pipeline. By filling the leakage pipeline with water to exhaust air from the leakage pipeline, the air in the leakage pipeline is sufficiently exhausted. According to the method, by filling the leakage pipeline of the second shaft seal of the nuclear power station main pump with water to exhaust air from the leakage pipeline, a phenomenon is greatly improved that the leakage flow of the second shaft seal of the nuclear power station main pump frequently fluctuates, the number of leakage flow alarm times of the second shaft seal of the nuclear power station main pump is effectively decreased, and cost caused by state monitoring and corrective inspection and repair due to the problem that the leakage flow of the second shaft seal of the nuclear power station main pump frequently fluctuates is greatly decreased. Additionally, the method successively treating the problem and experiences accumulated in an implementing process can be generalized and applied to the treatment of frequent fluctuation of the leakage flow of the second shaft seal of the main pumps of various nuclear power stations.
Description
technical field [0001] The invention relates to the technical field of main pumps of nuclear power plants, in particular to a method for processing abnormal leakage of main pumps of nuclear power plants. Background technique [0002] At present, in the main pump of the nuclear power plant, there is often a phenomenon of abnormal leakage of the main pump of the nuclear power plant, which is mainly reflected in the leakage flow fluctuation of the No. 2 shaft seal of the main pump of the nuclear power plant. [0003] as reference figure 1 As shown, in a nuclear power plant, the No. 2 shaft seal of the main pump is a frictional surface type shaft seal, which consists of a stainless steel static ring 1 covered with graphite and a stainless steel moving ring 2 coated with chromium carbide that rotates with the shaft. [0004] The function of the No. 2 shaft seal of the main pump is to block the leakage water of the No. 1 shaft seal of the main pump and guide it to flow back to th...
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IPC IPC(8): G21D3/06
CPCY02E30/00
Inventor 侯晔洪益群何继强王树强魏旭峰郑明辉任合斌张鹏岑相成代东亮
Owner CHINA GENERAL NUCLEAR POWER CORP