核反应堆控制棒驱动机构动作部件状态检测研究

Study on Monitoring of Action Assembly of Control Rod Drive Mechanism in Nuclear Power Reactors

针对反应堆堆内环境条件下控制棒驱动机构(CRDM)常用状态检测方法难以应用的情况,提出了一种新的通过在线测量线圈电感值进行CRDM动作部件状态检测的方法,通过试验获取了线圈电感值与动作部件状态之间关系,幵进行了样机模拟故障状态检测试验。结果表明,该方法可准确实现CRDM动作部件状态检测,不需在反应堆上增设额外仪器设备,实施较为方便。

Because it is difficult to detect the condition of Control Rod Drive Mechanism(CRDM)in reactors by normal detection method,this paper presents one new method to monitor the the condition of CRDM action component by on-line measuring of the coil inductance value.The corresponding relationship between the coil inductance value and the action component has been acquired by experiment,and the condition monitoring has been conducted under the prototype simulation failure condition.The results show that the condition monitoring method can be used for the monitoring of the CRDM action component condition accurately,and the method can be easily implemented without additional equipment requirment in the reactor.