SHI Xianrui1,2，YAN Genhua1，DONG Jia1,2，SUN Yunxi1,2
1. Hydraulic Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
2. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Abstract：The pump gate is a newly water environment management equipment with compact device and novel structure. This equipment is a combination of hydraulic plate and axial-flow pump. The weak boundary constraint and complex flow may induce the vibration of the pump gate. Therefore it’s necessary to carry out systematic research on the hydraulics and power safety of the pump gate. In this study, the hydrostatic properties, hydrodynamic and flow-excited vibration characteristics of the horizontal pump gate were researched systematically. The research methodology includes numerical simulation, hydrodynamic and hydroelastic vibration experiments. Random vibration theory and HHT method was used to analyze the signal data in experiments. In addition, to decrease the critical submergence depth of the horizontal integrated pump gate, three schemes of vortex elimination devices are designed to reduce the critical submergence depth. Which the third scheme is 58% lower than the original scheme, a efficitive solution .
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