超大扬程变幅大型导叶式混流泵选型研究  

Optimization Study on Selection of Large Scale Mixed Flow Pump with Super Large Variable Head range

作　　者：车璐 童乐一 潘利国 何成连[3] CHE Lu;TONG Le-yi;PAN Li-guo;HE Cheng-lian(Zhejiang Design Institute of Water Conservancy&Hydro-electric Power Co.,Ltd.,Hangzhou 310002,Zhejiang Province,China;Hangzhou Design Institute of Water Conservancy and Hydropower Co.,Ltd.,Hangzhou 310002,Zhejiang Province,China;China Water Resources Bei Fang Investigation,Design&Research Co.,Ltd.,Tianjin 300222,China)

机构地区：[1]浙江省水利水电勘测设计院有限责任公司,浙江杭州310002 [2]杭州水利水电勘测设计院有限公司,浙江杭州310002 [3]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《中国农村水利水电》2024年第6期174-179,共6页China Rural Water and Hydropower

摘　　要：浙江省杭州市九溪排涝泵站,装设有6台大型导叶式混流泵,单机流量50 m^(3)/s,单台电动机功率10000 kW,为国内目前在建单机流量最大的导叶式混流泵。水泵受上游来水和下游钱塘江潮位的影响,扬程变化幅度很大,最低扬程1.71 m,设计扬程14.0 m,最高扬程15.4 m。为保证泵组在超大扬程变化范围内保持安全稳定运行,结合九溪泵站建筑物布置和运行情况,充分利用下游挡潮闸提高最低扬程,详细分析比较全调节和变频调节对优化低扬程运行工况的作用,并采取综合措施提高泵组结构设计刚强度,从多角度对泵组运行工况和选型方案进行优化分析,并提出泵组变频调节和运行优化建议,为类似泵站提供参考。The Jiuxi Drainage Pumping Station in Hangzhou City,Zhejiang Province is equipped with six large mixed flow pumps with guide vane,with a single unit flow rate of 50m^(3)/s and a single motor power of 10000 kW.It is the largest mixed flow pump with vane diffuser in China.Affected by the upstream inflow and downstream Qiantang River tide,the pump head has wide range of variation.The minimum head is 1.71 m,the design head is 14.0 m,and the maximum head is 15.4 m.In order to ensure that the pump unit maintains safe and stable operation within a large range of head changes,combined with the building layout and operation conditions of the Jiuxi pumping station,the downstream tidal gates were fully utilized to increase the minimum head,and the effects of full regulation and variable frequency regulation on optimizing low head operating conditions were analyzed and compared in detail,and comprehensive measures to improve the stiffness and strength of the pump unit were adopted.A detailed analysis of the pump unit operating conditions and selection scheme is conducted,and suggestions for frequency conversion adjustment and operation optimization of the pump unit are proposed,providing reference for similar pumping stations.

关 键 词：导叶式混流泵 扬程变化 压力脉动 运行稳定性 变频调节 

分 类 号：TV675[水利工程—水利水电工程] S277[农业科学—农业水土工程]