龚嘴水电站水轮机过流部件抗磨蚀改造综述  

Abrasion Resistance Renovation of Flow Passage Parts in Hydro-turbine Units in Gongzui Hydropower Station

作　　者：李东 LI Dong(Guodian Dadu River Maintenance and Installation Co., Ltd., Leshan 614900, China)

机构地区：[1]国电大渡河检修安装有限公司,四川乐山614900

出　　处：《水电与新能源》2020年第4期52-56,共5页Hydropower and New Energy

摘　　要：位于多泥沙河流大渡河上的龚嘴水电站始建于上世纪60年代,受当时国内材料与科技水平制约,水轮机过流部件抗磨蚀、锈蚀性能差,磨损严重且无法修复,严重影响安全运行和效益。在对水轮机改造扩容中,大部过流部件采用各种不锈钢新材料。以2号机为例,2008年4月份完成其水轮机相关过流部件改造更换后,经过10年的运行,转轮、顶盖、导叶等均未见明显磨蚀,表明改造后的水轮机过流部件整体抗磨蚀性能良好,满足设计要求。Gongzui Hydropower Station,located on Dadu River with excessive sediment,was built in the 1960s.Restricted by the material science and technology level at that time,the abrasion and corrosion resistance of the flow passage parts in hydro-turbine units are rather weak,resulting in serious and irreparable damage that seriously affect the safe operation and benefit of the station.Thus,abrasion resistance renovation is carried out on the flow passage parts during the capacity expansion work of the units.New stainless-steel material is adopted for most parts.Practice of more than 10 years of operation of the units after the renovation shows that no obvious abrasion is observed on the runner,cover and guide vanes,indicating that the overall abrasion resistance of the flow passage parts of the units after renovation is satisfactory and meets the design requirements.

关 键 词：龚嘴水电站 过流部件 磨蚀 改造 

分 类 号：TK73[交通运输工程—轮机工程]