本文运用近年来水轮机设计中取得的一些最新成果，结合新疆伊犁团结水电站混流式水轮机的增容改造，在不改变引水部件和尾水管的形状、参数及转轮与主轴联配关系的前提下，对转轮的上冠、下环型线及叶片进出口边的轴面投影进行了改型设计，应用三维流Ｓ２流面有旋流动的反问题计算重新设计了转轮。新转轮在１８ｍ水头下机组出力达１２５０ｋＷ，较原机组增大２５％，且运行平稳、振动小。 Based on the latest achievements made in the design of hydraulic turbine in recent years and the compatibilization of Francis turbine in Yili, Xinjiang, without changing the shape and parameters of diversion components and draft tube and the mating relationship between runner and main shaft, On the crown of the runner, the next ring line and the blade import and export side of the axial projection of the modified design, the application of three-dimensional flow surface S2 has a rotating flow of inverse problem redesigned the runner. The new runner at 18m head unit output of 1250kW, 25% increase over the original unit, and the smooth operation, small vibration.