核电站用非核级电动截止阀阀杆扭曲分析与改进

Analysis and Improvement on Stem Distortion of Nuclear Power Station Electrical Globe Valve

介绍了CPR1000核电站小修期间发生的电动截止阀阀杆扭曲过程和现况,分析了电动截止阀阀杆扭曲的原因,并对阀门参数及结构型式进行调整和改进,解决了电动截止阀阀杆扭曲问题。

This article introduces the process and present situation of stem distortion of electrical globe valve during the minor overhaul in CPR1000 nuclear pow er station,analyses the root cause of the stem distortion,by adjusting and improvement relevant parameters and structures of the valve,finally solves the problem. It can be the reference to the similar valves during the design and manufacturing.