一、概述渔子溪型水轮机是我国自行设计、制造的容量较大的高水头混流式机组。十多年来的运行实践,为发展我国高水头混流式机组提供了宝贵的经验,但也存在着机组振动、摆度过大,稳定性差,导水机构过流表面气蚀和泥沙磨损严重等急待解决的问题。不少人曾提出对该机组进行结构改造的种种设想和建议,为了 I. Overview Fishing Creek Creek turbine is China’s own design, manufacture of large capacity high-head Francis unit. More than a decade of operational practice has provided valuable experience for the development of high-head Francis units in China. However, there are also some problems such as unit vibration, excessive swing, poor stability, severe cavitation erosion and sediment wear on the flow passage surface The urgent problem to be solved. Many people have put forward various proposals and suggestions on the structural transformation of this unit in order to