安全壳喷淋隔离阀电动装置力矩抖动故障改进方法研究

Research on Improvement of Torque Jitter Fault in EAS013/014VB of Nuclear Power Plants

对某核电厂安全壳喷淋隔离阀EAS013/014VB电动装置力矩频跳问题进行定性分析和试验验证。阀门启动时,转动惯量太大无法短时间使远传转速达120 r/min而造成电机蜗杆窜动,使力矩开关动保护,表现为力矩抖动。通过根本原因分析及现场实验确认:故障的原因是电动装置选型不当,导致电动装置力矩频跳。

This paper applies the qualitative analysis and experimental verification to the torque hopping problem of EAS013 / 014VB electric equipment of Nuclear Power Plant by applying the root cause analysis method. Valve start, the inertia is too large to make the remote transmission speed of 120 r/min caused by the motor worm move in short time, so that the torque switch protection, the performance of torque jitter. Through the analysis of the principle of the electric device and field experiments, it is concluded that improper selection of the electric device, which leads to the torque jump of the electric device, has important reference significance for the selection of the electric device with the remote control operation.