【摘要】 为提高水动力阀门控制器的力矩输出效率，现对其结构进行优化设计。利用SolidWorks建立水动力阀门控制器三维模型和四种新型叶片模型，采用CFD数值模拟方法对水动力阀门控制器流场进行仿真。重点研究：在进出口管道不同压差下叶轮角速度变化，以及在规定进口流速下4种叶片模型的压力特性和力矩变化，并根据模态分析得到叶片的各阶固有频率及相应振型图。结果表明：当进出水管道压差增大到0.5 MPa时，能够有效解决出水管道处回流现象和不定向流动情况，相比于两管道压差为0 MPa时，叶轮角速度提高41.9%;优化后的S型曲面叶片结构相比于原叶片，力矩输出效率提高了23.9%,并且有效提高了其固有频率，延缓共振发生，确保水动力阀门控制器在工作时机组的稳定运行。更多还原

【Abstract】 In order to improve the torque output efficiency of the hydrodynamic valve controller, its structure is optimized.SolidWorks is used to establish a three-dimensional model of the hydrodynamic valve controller and the four new types of blades, and CFD numerical simulation method is used to simulate the flow field of the hydrodynamic valve controller.The changes of impeller angular velocity under different pressure differentials in the inlet and outlet pipes are studied, as well as the pressure characteristics and torque changes of the four blade models under specified inlet flow rates.The natural frequencies and corresponding vibration mode diagrams of each order of the blades are obtained based on modal analysis.The results show that when the pressure differential between the inlet and outlet pipes increases to 0.5 MPa, the reflux and non-directional flow phenomena at the outlet pipe can be effectively solved; compared with the pressure differential of 0 MPa, the impeller angular velocity increases by 41.9%.The optimized S-shaped curved blade structure improves the torque output efficiency by 23.9%,and effectively increases its natural frequency, delaying resonance occurrence, and ensuring the stable operation of the unit when the hydrodynamic valve controller is working.更多还原