《河南水利与南水北调》2023年第2期农村水利·水电某水电站定子机坑内无中心柱叠片施工工艺耿世举（中国水利水电第十一工程局有限公司,河南郑州450001）摘要：定子叠片是定子组装的重要组成部分，良好的叠片质量可以减小定子铁芯涡流，减小铁芯损耗、热量、振动、提高发电机效率和机组稳定水平。因此，叠片质量是定子安装质量控制的关键因素。对于大型水轮发电机组来说，定子叠片往往占用较长的直线工期，而一般水电站在安装间只有一台定子组装设备和基础，同时只能组装一套定子。而机坑内无中心柱叠片可实现多台机组定子同时进行定子铁芯叠片，不受施工场地条件的约束，只要定子机坑具备强度条件即可进行定子铁芯的叠装,安装完成后其中心误差在±0.50mm以内，高度误差在±2mm以内，半径在±1.28之内，弹簧紧量刀片插入深度小于1mm，铁芯波浪度小于3mm。满足了定子铁叠片的各项技术指标，极大地节省了工期。关键词：发电机；定子；基坑；无中心柱；叠片中图分类号：TV734文献标识码：A文章编号：1673-8853（2023）02-0032-03ConstructionTechnologyofLaminationwithoutcentralcolumninstatorpitofahydropowerstationGENGSHiju（SinohydroBureau11CO.LTD.,Zhengzhou450001,China）Abstract：Statorlaminationisanimportantcomponentofthestatorassembly.Goodqualityoflaminationscanreducethestatorironcorevortex,reducetheironironcoreloss,heat,vibration,andimprovethegeneratorefficiencyandtheunitstabilitylevel.Therefore,thelaminationqualityisakeyfactorinthequalitycontrolofthestatorinstallation.Forlargehydroelectricgeneratingunits,statorlaminationoftenoccupyalonglinearconstructionperiod,whileforgeneralhydropowerstation,itonlyhasonestatorassemblyequipmentandfoundationintheinstallationroom,andonlyonesetofstatorcanbeassembledatatime.Thestatorcorelaminationwithoutcentralcolumninthemachinepitcanbecarriedoutformultipleunitsatthesametime,whichisnotrestrictedbytheconstructionsiteconditions.Aslongasthestatorpithasthestrengthconditions,thestatorcorecanbestacked.Aftertheinstallation,thecentralerroriswithin±0.50mm,heighterroriswithin±2mm,andradiusiswithin±1.28.Thespringtightnessbladeinsertdepthislessthan1mm,andironcorewavedegreeislessthan3mm.Itmeetsthetechnicalindexesofstatori...
