卧式一体化泵闸安全性研究及结构优化  

Safety and optimization of horizontal pump gates

作　　者：侍贤瑞 严根华[1] 董家 孙云茜 SHI Xianrui;YAN Genhua;DONG Jia;SUN Yunxi(Hydraulic Engineering Department,Nanjing Hydraulic Research Institute,Nanjing 210029,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]南京水利科学研究院水工水力学研究所,南京210029 [2]河海大学水利水电学院,南京210098

出　　处：《振动与冲击》2021年第22期42-47,共6页Journal of Vibration and Shock

基　　金：国家自然科研基金项目(11002162)。

摘　　要：一体化泵闸是一种新型水环境治理设备,该设备将水泵与平板闸门一体结合,装置紧凑、构造新颖。但该设备边界约束弱、流动条件复杂,容易发生流激振动。通过三维有限元数值模拟、水动力特性及流激振动试验,系统研究了卧式表孔一体化泵闸结构不同工作条件下的静动力特性、水动力特性和流激振动特性,并采用HHT(Hilbert-Huang transform)方法对随机数据进行分析。此外,针对卧式一体化泵闸的临界工作淹没深度过高的问题,设计了三种消涡装置以降低临界淹没深度,方案三较原方案降低了58%,效果显著。The pump gate is a new type water environment management equipment with compact device and novel structure.This equipment is the combination of a hydraulic plate and an 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,hydrodynamic and flow-excited vibration characteristics of the horizontal pump gate were investigated systematically.The research methodology includes numerical simulation,hydrodynamic and hydroelastic vibration experiments.The random vibration theory and Hilbert-Huang transform(HHT)method were used to analyze the signal data in the experiments.In addition,to decrease the critical submergence depth of the horizontal integrated pump gate,three schemes of vortex elimination devices were designed in which,the third scheme can make the critical submergence depth 58%lower than the original scheme.Really an efficitive solution.

关 键 词：卧式一体化泵闸 流激振动 数值模拟 时频分析 消涡装置 

分 类 号：TV663.1[水利工程—水利水电工程] TH312[机械工程—机械制造及自动化]