中高水头电站水轮机活动导叶表面破坏机理分析

以某电站水轮机活动导叶表面破坏情况为例，从空蚀产生的原因以及空化加剧泥沙磨损作用的微观机理两个方面，深入分析水轮机活动导叶表面破坏机理，以及轴根下方鼓包处破坏较为严重的原因，并对其影响因素进行分析，进而提出若干有效减少破坏的措施及相关运行建议。

Analysis on Damage Mechanism of Water Turbine Guide Vane Surface at Power Stations with Mid and High Water Head

Damage of turbine guide vane surface is found a common problem in many operating hydropower stations.Especially for those guide vanes with bulge under the guide vane trunnion,surface near the bulge is usually most seriously damaged.The paper studies the damage on turbine guide vane surface of a hydropower station,as an example,both from the factors of cavitation and the macro model for cavitation-enhanced silt erosion based on microjet-particle interaction.It explains the dynamic mechanism of guide vane sur...