2023年第3期2023Number3水电与新能源HYDＲOPOWEＲANDNEWENEＲGY第37卷Vol．37DOI:10．13622/j．cnki．cn42－1800/tv．1671－3354．2023．03．009收稿日期:2022－02－14作者简介:耿在明，男，高级工程师，主要从事水轮发电机组检修工作。三峡右岸电站ALSTOM20F机组接力器改造耿在明，杨杰，黄奎，赵春贺(中国长江电力股份有限公司检修厂，湖北宜昌443000)摘要:针对三峡右岸电站ALSTOM20F机组自投产以来多次在高水头小开度区间出现导叶接力器关闭迟滞问题，分析故障产生的原因，曾采用导叶中轴套扩大内径的处理方案，机组导叶拒动现象消除5年后再次出现，经反复检查并与左岸机组对比分析，发现其核心原因为接力器操作功率偏小。研究决定将其更换为结构简单、制造容易、检修方便的接力器，并对一些部件安装方式及参数适当调整。机组改造投入运行以来再未出现异常，说明改造方案可行，施工工艺可靠。关键词:接力器;关闭;迟滞;改造中图分类号:TV734文献标志码:B文章编号:1671－3354(2023)03－0036－03ＲenovationoftheServomotorinALSTOM20FUnitintheＲightBankPowerPlantofThreeGorgesHydropowerStationGENGZaiming，YANGJie，HUANGKui，ZHAOChunhe(OverhaulandMaintenanceFactory，ChinaYangtzePowerCo．，Ltd．，Yichang443000，China)Abstract:SincethestartoftheoperationoftheALSTOM20FunitintherightbankpowerplantofThreeGorgesHydro-powerStation，shutdownactiondelayingoftheguidevaneservomotorisobservedformanytimesinthehighwaterheadandsmallopeningworkingcondition．Treatmentschemeofexpandingtheinnerdiameteroftheguidevaneshaftsleevewasused．Buttheactionfailurefaultoftheguidevanesareencounteredagainafterthetreatment．Afterrepeatedinspec-tionandcomparisonwiththeleftbankunits，itisfoundthattheessentialreasonofthisfaultistheoperationpoweroftheservomotoristoolow．Thus，itisreplacedwithaservomotorwithsimplerstructureandmoreconvenientmanufacturingandmaintenance，andtheinstallationmodeandparametersofsomecomponentsareadjustedappropriately．Aftertherenovation，theunitoperateswellwithnoabnormalityfound，indicatingthattherenovationschemeisfeasibleandtheconstructionprocessisreliable．Keywords:servomotor;shutdown;delay;renovation三峡右岸电站ALSTOM机组在启动试运行期间，多次出现导叶...
