1000MW级核电站用喷淋泵泵壳安全性分析  

Analysis of spray pump casing security in 1000 MW nuclear power plant

作　　者：王文博[1] 刘厚林[1] 王凯[1] 黄浩钦[1] 李永进 

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]扬州长江水泵有限公司,江苏扬州225200

出　　处：《排灌机械工程学报》2015年第5期402-406,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51239005;51209105;51179075);"十二五"国家科技支撑计划项目(2011BAF14B03;2013BAK06B02);江苏省科技支撑计划(工业)项目(BE2012129)

摘　　要：安全壳喷淋系统是保障核电站安全的关键设施,该系统中的喷淋泵更是核电站的核心安全设备.以一台核电站用安全壳喷淋泵为研究对象,对其进行安全特性方面的研究,以验证其设计是否满足抗震规范要求.首先,对泵壳结构体进行模态分析;其次,对其结构体加载运行基准地震载荷和安全停堆地震载荷,并进行基于模态响应下的地震动分析;最后,对泵壳内壁表面加载热变载荷,并对结构体进行热冲击计算.结构体安全性分析的结果表明:喷淋泵壳体的基频为104.45 Hz,远大于33 Hz,为刚性结构,结构体振动方式以水平方向运动为主.热冲击作用下产生的高热应力区域集中在泵座与壳体交界处;地震动作用下的地震动效应高应力区域集中在壳体上的结构分布不均匀处.无论是在热冲击还是地震动作用下,高形变区域均集中在泵底.泵壳结构体上出现的最大应力小于ASMEⅡ所确定的材料许用应力,满足抗震规范要求.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 thermalstress 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.

关 键 词：核电站 喷淋泵 热冲击分析 地震动分析 

分 类 号：TH311[机械工程—机械制造及自动化]