采用Fluent软件对某大型双吸离心泵内部流场进行数值模拟,计算得出不同流量下叶轮所受径向力,作为叶轮转子有限元分析的边界条件.应用ANSYS Workbench软件对离心泵叶轮转子进行模态分析,得到四阶固有频率和振型；加载径向力载荷后,不同流量下叶轮转子产生形变,其中0流量和0.4Q流量时泵密封环处形变量超出密封间隙设计值,为泵的密封环间隙的设计和修改提供了参考依据.%Radial forces of a double-suction centrifugal pump rotor in different flows are calculated through numerical simulation and used to be the boundary conditions of finite element analysis. Firstly, with the finite element analysis software ANSYS Workbench,the modality of the centrifugal pump rotor is analyzed to obtain its four order natural frequencies and vibration modes. According to the modality analysis, data reference is provided for further vibration analysis of the rotor. Also,the deformation-value of the shaft at the sealed ring from 0 to 0. 4Q0 is beyond its design value through finite element analysis, which provides reference for the design of sealed ring gap of the pump.
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