高水头混流式水轮机长短叶片转轮裂纹分析  

Analysis on the Crach of the Runner with Long and Short Blade of Francis Turbine with High Water Head

作　　者：乌晓明 

机构地区：[1]重庆涪陵水利电力勘测设计院,重庆408000

出　　处：《水力发电》2007年第1期53-55,共3页Water Power

摘　　要：石板水电站装有3台35 MW采用长短叶片转轮的高水头混流式水轮机,机组自1997年投入运行以来,水轮机在空蚀、磨蚀、效率、运行稳定性方面表现出很好的性能,但转轮叶片出现了裂纹。为此,从设计、制造质量和运行方面,分析了引起该水轮机转轮叶片裂纹产生的主要原因,提出了防止裂纹的建议,对水轮机的制造和运行有较好的参考价值。The Shiban Hydropower Station was equipped with three high-head Francis turbines with long and short blade with the installed capacity of 35 MW each. Since it was put into operation in 1997, the turbine has played a good function in cavitation, abrasion, efficiency and operation stability. But some cracks occurred in the runner blade. This paper analyzes the main reasons of the cracks of turbine＇s runner blade and puts forward the suggestion of preventing crack from design, manufacturing, quality and operation,which provides the reference value for manufacturing and operation of turbine.

关 键 词：高水头混流式水轮机 长短叶片转轮 叶片裂纹分析 

分 类 号：TK730.323[交通运输工程—轮机工程] TK730.8[动力工程及工程热物理—流体机械及工程]