针对CPR1000核电厂电动主给水泵系统中联管振动高导致管道支架断裂问题，研究一系列极端运行工况下中联管的压力波瞬态变化，并通过时程分析方法计算中联管相应位置的振动频率和振动位移。根据通用一维管网水力软件和一维管网结构应力软件进行数值计算结果，提出优化中联管支架的方法，缓解中联管的振动效应，降低管道瞬态应力，避免管道或管道支架再次出现断裂现象。
In order to solve the problem of pipe support fracture caused by high vibration in the main electric feed water pump system of CPR1000 Nuclear Power Plant, the transient changes of pressure wave in the intermediate pipe under a series of extreme operating conditions were studied, and the vibration frequency and vibration displacement of the corresponding position of the intermediate pipe were calculated by time history analysis method. According to the numerical calculation results of the general one-dimensional pipe network hydraulic software and one-dimensional pipe network structure stress software, the method of optimizing the intermediate pipe support is proposed, which can alleviate the vibration effect of the intermediate pipe and reduce the transient stress, to avoid the fracture phenomenon of the pipe or pipe support.
