ZZ560型轴流式水轮机改造尾水管进口流速LDV测试  

Inlet Flow Velocity Measurement for the Draft Tube of a Renovated ZZ560 Kaplan Turbines using LDV

作　　者：税彪 邓万权[2] 刘珏 李仲全 钱敏 SHUI Biao;DENG Wanquan;LIU Jue;LI Zhongquan;QIAN Min(DEC Dongfang Electric Machinery Co.,Ltd.,Deyang 618000,China;Xihua University,Chengdu 610039,China)

机构地区：[1]东方电气集团东方电机有限公司,四川德阳618000 [2]西华大学,四川成都610039

出　　处：《水电与新能源》2025年第4期5-8,共4页Hydropower and New Energy

摘　　要：低水头轴流式水轮机尾水管的水力损失在整个机组的水力损失中占有较大的比重,采用何种尾水管进口流速分布可以使尾水管获得较好的能量回收性能以及稳定的流态是水力设计时应重点考虑的因素。针对ZZ560型水轮机改造开发的转轮,采用激光多普勒测速LDV技术对尾水管进口流速分布进行测试,并结合CFD计算结果进行分析,得到了ZZ560型水轮机较好工况点的尾水管进口流速分布规律。结果可供轴流式水轮机的水力设计参考。The hydraulic loss of the draft tube in a low-head Kaplan turbine accounts for a large proportion of the total hydraulic loss of the unit.In the hydraulic design of the draft tube,the inlet flow velocity distribution that can achieve better energy recovery performance and stable flow regime are important factors.For a renovated ZZ560 Kaplan turbine,laser Doppler velocimetry(LDV) technique is adopted to measure the flow velocity distribution at the inlet of the draft tube.The measurements and the CFD calculation results are analyzed.The flow velocity distribution at the optimal operating point of the unit is determined.The results can be useful reference for hydraulic design of Kaplan turbines.

关 键 词：轴流式水轮机 激光多普勒LDV 尾水管 流速分布 数值模拟 

分 类 号：TK730.314[交通运输工程—轮机工程]