Analysis of spray pump casing security in 1 000 MW nuclear power plant
Wang Wenbo1, Liu Houlin1, Wang Kai1, Huang Haoqin1, Li Yongjin2
1.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Yangzhou Changjiang River Pumps Co. Ltd., Yangzhou, Jiangsu 225200, China
Abstract：Containment spray system is an essential facility for nuclear power plant safety, and spray pump is the core safety equipment in it. In order to study the security of spray pump, and verify it satisfies the anti-seismic standards, a spray pump in 1 000 MW nuclear power plant was chosen as the research object. First, pump casing modal analysis was conducted;then the anti-seismic calculation at operating basis earthquake seismic load and safe shutdown earthquake seismic load was performed; Finally thermal load was placed in the inner face of the pump, and thermal shock analysis was done. The results indicate that the fundamental frequency of the pump casing is 104.45 Hz, far more than 33 Hz, and its structure is rigid. The vibration direction of the structure is mainly horizontal. High thermal stress is located at the junction of pump frame and hull, while high seismic stress is located on heterogeneous parts in pump casing. The thermal deformation and seismic deformation are both located at the bottom. The maximum stress is far less than the allowable stress specified by ASMEⅡ. The pump satisfies the anti-seismic relevant standards.
王文博, 刘厚林, 王凯, 黄浩钦, 李永进. 1 000 MW级核电站用喷淋泵泵壳安全性分析[J]. 排灌机械工程学报, 2015, 33(5): 402-406.
Wang Wenbo, Liu Houlin, Wang Kai, Huang Haoqin, Li Yongjin. Analysis of spray pump casing security in 1 000 MW nuclear power plant. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(5): 402-406.
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