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一、概况纪村水电站是一座渠道引水式径流电站。装有两台天津发电设备厂1974年生产的轴流转桨式水轮发电机组,总装机容量为3.4万千瓦。设计年发电量为1.65亿kw·h,年利用小时为5070小时,1976年第一台机组发电,1977年底基本竣工。经过十几年的运行,机组转轮的铸钢叶片汽蚀破坏不断加剧,给检修工作带来很大困难。检修周期和工期以及检修质量越来越难以保证。叶片经过几次大、小修补焊后,变形比较明显。因此运转特性有所改变,效率有不同程度的降低,机组振动也有所增大。
I. Overview Jicun Hydropower Station is a channel diversion runoff power station. Installed in 1974 with two power generation plant in Tianjin Kaplan turbine generator set, with a total installed capacity of 34,000 kilowatts. Design annual generating capacity of 165 million kw · h, the annual utilization hours of 5070 hours, 1976, the first generating units, basically completed by the end of 1977. After more than 10 years of operation, the turbine runner cast steel vane corrosion damage is aggravating, to the maintenance work has brought great difficulties. Maintenance cycle and schedule as well as the quality of maintenance more and more difficult to guarantee. After several large blades, small repair welding, the deformation is more obvious. So the operating characteristics have changed, the efficiency has been reduced to varying degrees, unit vibration has also increased.