本文介绍了水轮机参数选择的特点和合理性,特别是从分析国内外ZZ587运行水轮机的能量、汽蚀、稳定及强度等性能出发,论述了该型水轮机使用水头提高到40m,其叶片采用不锈钢制作,转轮体进行局部加固的必要性;并通过水轮机全流道的模型试验,论证了蜗壳、尾水管隔墩头部形状和位置对水轮机能量的影响,为铜街子水轮机选定了最佳的隔墩布置方案。 This paper introduces the characteristics and rationality of turbine parameters selection. Especially from the analysis of energy, cavitation, stability and strength performance of turbine running at home and abroad ZZ587, this paper discusses the use of stainless steel , The necessity of local reinforcement of the wheel body; and through the model test of the full runner of the turbine, the influence of the head shape and position of the volute and the tail pipe pier on the energy of the turbine is demonstrated, Good pier arrangement plan.