主螺栓断裂对压力容器密封性能、应力及疲劳的影响分析

Effect of Main Bolt Break on Seal Performance,Stress and Fatigue of Reactor Pressure Vessel

在理论分析和数值仿真技术基础上,研究并提出了一种主螺栓断裂对反应堆压力容器(RPV)密封性能、螺栓应力及疲劳的影响分析方法,采用该方法对主螺栓断裂影响进行了评价分析。结果表明,该方法适用于分析1根或多根主螺栓断裂情况对压力容器安全性能的影响,可以用于核电厂在运行中发生类似问题时判断反应堆能否继续运行。

Base on the mechanics theory and numerical simulation technique,a method to analyze the effect of the main bolt break on the stress,fatigue and seal is studied in this paper,and is adopted to evaluate and analyze the fracture influence of main bolt.The results show that this method is applicable for the analysis of the RPV safety performance induced by one bolt break or several bolts break accident,and for the determination if the nuclear reactor can be operated when similar problems occur.