大落差倒虹吸管底部设置分水口的消能方案研究  

Research on the Energy Dissipation Scheme under Partial Nozzle High Pressure Differences at the Bottom of the Large Inverted Rainbow

作　　者：魏周会 雷克刚 王军进 金国飞 WEI Zhou-hui;LEI Ke-gang;WANG Jun-jin;JIN Guo-fei(Gansu Water Investment Co.,Ltd,Lanzhou 730000,Gansu Province,China;CSCECAECOMCONSULTANTSCO.,LTD2,Lanzhou 730000,Gansu Province,China)

机构地区：[1]甘肃省水务投资有限责任公司,甘肃兰州730000 [2]中国市政工程西北设计研究院有限公司,甘肃兰州730000

出　　处：《中国农村水利水电》2022年第11期113-117,共5页China Rural Water and Hydropower

摘　　要：以西北某供水工程为例,对在大落差倒虹吸管底部设置分水口的消能方案进行了设计和研究。通过比较活塞式调节阀和套筒式调节阀的特点,选择本分水口的消能阀型式采用活塞式调节阀;在此基础上,通过对装置汽蚀系数和活塞阀汽蚀系数的分析,确定采用两级消能设计方案,选定了合理的消能阀出口型式及活塞阀串联运行时关闭阀的操作和控制方式。该消能方案已成功应用于工程实际,可为类似工程提供参考。Taking a water supply project in Northwest China as an example,the energy dissipation scheme of setting a diversion outlet at the bottom of the inverted siphon with large drop are designed and studied.By comparing the characteristics of the piston-type regulating valve and the sleeve-type regulating valve,the piston-type regulating valve is selected as the energy dissipation valve type of the diversion outlet;On this basis,the design scheme of two-stage energy dissipation is determined,and the reasonable outlet type of the energy dissipation valve and the operation and control mode of the piston valve when piston valve is running in series are selected by analyzing the cavitation of equip⁃ment and piston valve.The energy dissipation scheme has been successfully applied in engineering practice and can provide reference for similar projects.

关 键 词：大落差 倒虹吸 消能 调流调压阀 气蚀 

分 类 号：TV672.5[水利工程—水利水电工程] TV672.2