水力式升船机控制阀门水力特性试验研究  

Experimental study on hydraulic characteristics of control valve of hydraulic driven ship lift

作　　者：王蛟 胡亚安[2] 严秀俊[2] 刘精凯 WANG Jiao;HU Yaan;YAN Xiujun;LIU Jingkai(Chongqing Southwest Research Institute for Water Transport Engineering,Chongqing Jiaotong University,Chongqing 400016,China;Key Laboratory of Navigation Structures,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]重庆交通大学重庆西南水运工程科学研究所,重庆400016 [2]南京水利科学研究院通航建筑物建设技术交通行业重点实验室,江苏南京210029

出　　处：《人民长江》2021年第6期167-171,共5页Yangtze River

基　　金：云南省院士基金自由探索项目(HNKJ17-H19);重庆市教委科学技术研究项目(KJQN202000722)。

摘　　要：控制阀门是水力式升船机所特有的核心设备,深入全面地掌握其内部及附近的水力特性,关乎水力式升船机的运行效率及安全。针对世界上第一座水力式升船机的控制阀门--活塞式调流阀,通过物理模型试验进行了不同开度、背压、压差条件下的水力特性试验研究,重点关注阀门的流量特性、空化特性以及阀后管壁压力特性。研究结果表明:活塞阀控流精确,可将空化限制在阀口及以外,对阀门自身保护较好;但在小开度时过流能力偏低、流态不稳定、阀后管壁压力受流场影响明显,不利于管道安全。Control valve is a special core equipment of hydraulic driven ship lift(HDSL).Thorough understanding of its internal and nearby hydraulic properties has significant meanings to the operation efficiency and safety of hydraulic driven ship lift(HDSL).Aiming at the control valve of the world′s first HDSL-piston type regulating valve,through the physical model test,the hydraulic characteristics under different conditions of opening,back pressure and pressure difference were tested,and the flow characteristics of the valve,cavitation characteristics and pressure characteristics of pipe wall behind the valve were analyzed.The research results showed that the flow control of the piston type regulating valve was accurate,the cavitation could be restricted to the valve mouth and outside,and the protection of valve itself was better.However,the flow capacity of the valve at a small opening was low,the flow field structure was unstable,and the pressure of pipe wall was obviously affected by the flow field,which was not conducive to the pipeline safety.

关 键 词：活塞式调流阀 水力特性 物理模型试验 流量系数 空化数 流场结构 水力式升船机 

分 类 号：TV672.2[水利工程—水利水电工程]