基于绝对位移的核反应堆压力容器振动探测技术研究  

Research on Vibration Detection Technology of Nuclear Reactor Pressure Vessel Based on Absolute Displacement

作　　者：杨泰波[1] 罗能 李芸 庞天枫 YANG Taibo;LUO Neng;LI Yun;PANG Tianfeng(Nuclear Power Institute of China,Chengdu 610041,China)

机构地区：[1]中国核动力研究设计院,成都610041

出　　处：《计算机测量与控制》2023年第6期59-65,共7页Computer Measurement &Control

摘　　要：随着核电发展需求的不断提升,行业对电站的安全可靠运行提出了更高的要求;作为反应堆及一回路重要承压边界和放射性包容屏障,反应堆压力容器振动状态关系核电运行安全;依据国际电工委员会IEC61502振动监测标准和核电站需求,开展了核反应堆压力容器振动探测技术研究,并研制了探测系统,包括绝对位移传感器、信号处理机柜、信号调理设备、振动分析设备和监测软件,利用电磁振动台对系统进行验证,获得了基于绝对位移传感器的压力容器振动探测技术;同时研究了通过对绝对位移信号进行相干和相位分析识别压力容器振动模态的方法,并对某核电2号机组一个燃料周期的压力容器绝对位移数据进行分析,获得了压力容器振动幅度、固有频率和模态振型,结果表明压力容器振动平稳,未出现异常。With the continuously improving for nuclear power development,the safe and reliable operation of power plant is highly required.As an important pressure boundary and radioactive containment barrier of reactor and primary circuit,the vibration state of reactor pressure vessel is related to the safety of nuclear power operation.According to the requirements of vibration monitoring standard IEC61502 and nuclear power plant,this paper carries out the research on the vibration detection technology of nuclear reactor pressure vessel,develops the detection system,including the absolute displacement sensor,signal processing cabinet,signal conditioning equipment,vibration analysis equipment and monitoring software,the electromagnetic vibrostand is used to verify the system,and obtain the vibration detection technology of pressure vessel based on the absolute displacement sensor.The vibration mode detection method of the pressure vessel is studied by the coherent and phase analysis of the absolute displacement signal,and the vibration data of the pressure vessel of nuclear No.2 unit is analyzed in one fuel cycle,obtaining the vibration amplitude,inherent frequency and vibration modal of the pressure vessel.The results show that the vibration of the pressure vessel is stable and no abnormality occurs.

关 键 词：核电 压力容器 绝对位移 振动探测 模态分析 

分 类 号：TM623[电气工程—电力系统及自动化]