福清核电机组水泵机械密封失效分析研究  

Study on Failure Analysis of Mechanical Seal for Main Feed Pump in Fuqing Nuclear Power Plant

作　　者：刘星 LIU Xing(CNNP Guodian Zhangzhou Energy Co.,Ltd.,Zhangzhou 363300,China)

机构地区：[1]中核国电漳州能源有限公司,福建漳州363300

出　　处：《液压气动与密封》2023年第10期116-121,共6页Hydraulics Pneumatics & Seals

摘　　要：国内某百万千瓦核电机组主给水泵机械密封,在运行期间发生黑色液体泄漏至大气侧,密封的泄漏量为45~135 mL/h。从而判定密封处于非正常磨损的运行状态,因此停泵拆解密封,对新旧密封进行测量。通过建立有限元模型进行分析判定,总结出失效原因。通过对主给水泵机械密封失效进行分析研究,可以为现场主给水泵运维策略制定提供量化参考和指导。Mechanical seal of main feed water pump of a domestic nuclear power unit.During operation,black leakage occurs and the liquid leaks to the atmosphere side.The leakage is 45~135 mL/h.From this phenomenon,it is determined that the seal must have experienced abnormal wear and tear,so the pump was stopped to disassemble the seal,and the old and new seals were measured.Through the analysis and research on the failure of the mechanical seal of the main feed pump in Fuqing,it can provide quantitative reference and guidance for the formulation of the operation and maintenance strategy of the main feed pump on site.

关 键 词：主给水泵 非驱动端密封 失效分析 有限元分析 

分 类 号：TB42[一般工业技术] TK268[动力工程及工程热物理—动力机械及工程]