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板桥水电站自1994年发电以来,水轮机气蚀严重,导致水轮机工作机件表面多处受到侵蚀、剥落,使过流部件形成麻点和蜂窝孔洞,引起机组振动,降低效率和出力。通过运行实践分析,采取对水轮机及时检修,及时焊补,定期修补,并于2007年对3#机组的水轮机转轮由4个叶片更换为5个叶片的抗气蚀性能好的不锈钢材料的转轮,缓解了板桥水电站多年来存在的水轮机气蚀严重的状况,效果明显。
Since the power generation in Banqiao Hydropower Station in 1994, the turbine cavitation is serious, leading to the erosion and spalling of many parts of the working machine parts of the turbine, causing the overcurrent parts to form pits and honeycomb holes, causing the units to vibrate and reducing the efficiency and output. Through the practice of operation analysis, take the turbine timely repair, timely welding repair, regular repair, and in 2007 on the 3 # turbine turbine runner from 4 leaves to 5 blades of good anti-cavitation performance stainless steel rotation Round, eased the Banqiao Hydropower Station over the years there is a serious state of cavitation turbine, the effect is obvious.