一回路核级设备磨损的监测模型

Monitoring Model of Nuclear-Grade Equipment Wear in Primary Circuit

核级设备的结构失效与微动损伤有直接关系,在应力集中部位,微动又是许多核电设备提前失效的直接原因。本文以一回路核级设备为对象,研究其磨损失效的原理和特征,并针对不同的磨损失效情况建立监测模型,针对难以避免的典型磨损,构建监测模型,在线监测敏感部位的磨损,并提取信号进行分析,确定磨损部位和磨损程度。监测模型可以通过至少两种监测手段监测易发生磨损的部位,同时,通过不同的定位方法找到磨损发生的位置,并发出警报,做到事故前预防。

The structural failure of nuclear equipment is directly related to fretting damage.At the stress con⁃centration site,fretting is the direct cause of premature failure of many nuclear power equipment.In this paper,the principle and characteristics of primary core equipment wear failure are studied,and monitoring models are established for different wear failure conditions.In view of the unavoidable typical wear,a monitoring model was built to monitor the wear of sensitive parts online,and the signals were extracted for analysis to determine the wear parts and wear degree.The monitoring model can monitor the parts that are prone to wear by at least two monitoring methods.At the same time,the location of wear can be found by different positioning methods,and the alarm can be issued to prevent accidents.