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1 概述将军岭水电站位于河南省内乡县境内,建于1982年,装机容量2×500kW。由于原机组水轮机选型不合理,与电站运行条件不匹配,水轮机效率比较低,机组最大出力只有460kW。随着运行年限增长,转轮气蚀严重,每3a就报废一个转轮。1997年,我公司分析了该电站的运行条件,认为老机型不符合电站运行条件,对该电站进行了增容改造,更换为更适合电站运行条件的新转轮,取得了令人满意的结果,机组最大出力从改造前的460kW,增至515kW,增幅达12%。通过近3a运行,转轮无气蚀现象发生。
1 Overview Jiangjunling Hydropower Station is located in Neixiang County, Henan Province, was built in 1982, with an installed capacity of 2 × 500kW. As the original unit turbines irrational selection, operating conditions do not match with the power plant, turbine efficiency is relatively low, the maximum output unit only 460kW. As the operating life increases, runner cavitation is serious and one runner is scrapped every 3 years. In 1997, our company analyzed the operating conditions of the power plant, that the old model does not meet the operating conditions of power plants, the capacity of the power plant transformation, replaced by a new runner more suitable for power plant operating conditions, and achieved satisfactory As a result, the maximum output of the unit increased from 460kW before transformation to 515kW, an increase of 12%. Run nearly 3 years, wheel no cavitation occurs.