方家山核电机组凝汽器检漏装置技改优化  

Technical Modification and Optimization of Condenser Leak Detection Device for Fangjiasan Nuclear Power Plant

作　　者：张振宇 王今芳 张毅 唐博 何庆 张利锋 王尧 况常委 ZHANG Zhen-yu;WANG Jin-fang;ZHANG Yi;TANG Bo;HE Qing;ZHANG Li-feng;WANG Yao;KUANG Chang-wei(Nuclear Power Operation Management Co.,Ltd,Haiyan,Zhejiang Prov.314300,China;Jiangshu Nuclear Power Co.,Ltd,Lianyungang Jiangsu Prov.222042,China;Xiapu Nuclear Power Co.,Ltd.,Ningde Fujan Prov.355100,China;Wanna Shenhe Holding Group,Jiaxing,Zhejiang Prov.314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300 [2]江苏核电有限公司,江苏连云港222042 [3]霞浦核电有限公司,福建宁德355100 [4]万纳神核控股集团,浙江嘉兴314300

出　　处：《中国核电》2022年第4期542-549,共8页China Nuclear Power

摘　　要：凝汽器是核电厂二回路系统热井约有4.9万根传热管,检漏装置是凝汽器的“眼睛”,其设计的目的就是实时监测,快速判断凝汽器设备是否有海水泄漏。传统设计凝汽器检漏装置用阳电导率监测,该方案对海水微量泄漏与间歇性泄漏的反应不够灵敏,且报警后还要进行人工取样分析监测,通过技改优化采用钠表查漏具有反应灵敏,响应速度快,可以准确地反映出海水泄漏情况,从而改善检漏装置的实时监测效果。There are about 49,000 heat transfer tubes in the thermal well of the secondary circuit system of nuclear power plant, and the leak detection device is the “eye”of the condenser. The traditional design of leakage detection device for condenser is based on the monitoring of cation conductivity, which is not sensitive enough to the response of micro leakage and intermittent leakage of seawater, and manual sampling analysis and monitoring should be carried out after alarm.Through optimization of the sodium meter leak detection, the response is sensitive, fast, and can accurately reflect the seawater leakage.Thus, real-time monitoring effect of the leak detection device is improved.

关 键 词：凝汽器 检漏装置 阳电导率表 钠表 

分 类 号：TM623[电气工程—电力系统及自动化]