核电厂乏池液位计热扩散测量模型研究  

Research on Thermal Diffusion Measurement Model of Spent Fuel Pool Level Gauge in Nuclear Power Plant

作　　者：魏祖荣 王五妹 刘政 刘建忠 WEI Zurong;WANG Wumei;LIU Zheng;LIU Jianzhong(Fujian Fuqing Nuclear Power Co.,Ltd.,Fuqing 350300,China)

机构地区：[1]福建福清核电有限公司,福建福清350300

出　　处：《电工技术》2021年第8期53-54,58,共3页Electric Engineering

摘　　要：福清核电厂采用热扩散原理的乏池液位计测量乏燃料水池液位,该乏池液位计通过参考电阻,消除环境温度引入的干扰,但是由于仪表探测器内汽-液两相转变而引入的液化热量,打破温度补偿机制,从而引入测量误差,导致仪表读数出现波动。通过建立热扩散测量模型,深入研究乏池液位计测量机理和波动原因。Fuqing Nuclear Power Plant uses a spent fuel pool level gauge based on the thermal diffusion principle to measure the level of the spent fuel pool.The spent fuel pool level gauge uses a reference resistor to eliminate the interference caused by ambient temperature.However,the liquefied heat introduced by the vapor-liquid two-phase transformation in the detector breaks the temperature compensation mechanism,which leads to the measurement error and the fluctuation of the meter reading.Through the establishment of thermal diffusion measurement model,the measurement mechanism and fluctuation reason of spent fuel pool level gauge are deeply studied.

关 键 词：乏池液位计 环境温度补偿 汽-液两相转变 热扩散测量模型 

分 类 号：TM623[电气工程—电力系统及自动化]