核电厂主泵振动控制技术研究

Technical Study on Reactor Coolant Pump Vibration Control in Nuclear Power Plant

为解决秦山第三核电厂1号机组3号主泵的振动问题,通过在核电厂反应堆停堆期间,测量主泵系统的振动特性和模态参数,在反应堆启动升功率和满功率运行期间,测量主泵系统运行时的热位移、振动和相位变化过程,结合故障诊断分析技术、主泵运行历史数据分析、反应堆机组各种运行工况及运行参数变化对主泵振动的敏感度分析,确定了控制主泵振动的技术。首次将主泵振动水平控制在可长期稳定运行的优良水平,确保了核电厂反应堆长期安全运行的可靠性。

In order to find and solve the vibration problem of 3it reactor coolant pump （RCP） of Unit 1 of Qinshan m, we have tried our best to measure the RCP＇ s vibration characteristics and modal parameters in the shutdown period. When the RCP keeps working during both startup and Ml-power operation period, its thermal displacement, vibration and phase change process also have been monitored careflilly and helpful data have been gathered. Through analyzing the historic operating data of R CP and its variation sensitivity related with the unit＇ s different conditions as well as changing parameters, we have presented effective technique for vibration control of the RCP by combining fault diagnosis method. After feasible measures are developed according to this technique and effidently implemented.