简介：2015年3月7日，由中国水利水电第三工程局制造安装分局承建的乌金峡水电站3号机组A级检修项目转轮吊装顺利完成，标志着鸟金峡水电站3号机组检修安装进入最后的总装和调试阶段，同时也为按期完成3号机组的发电目标奠定了坚实基础。

简介：本文通过分析泉州山美水电站3号机组上导轴承旋转油槽盖板在运行中发生磨损毁坏原因,提出了对上导轴承旋转油槽盖板进行结构改造的技术措施,取得了理想效果,可为类似结构机组的改造提供一个可借鉴的经验。

简介：Lid-drivenmixedconvectionhasbeengivenimmenseimportanceduetoitswiderangeofapplications.AT-shapedcavityisintroducedandpertinentparameterscontrollingmixedconvectionphenomenonareanalyzedinthispaper.Water-Al2O3nanofluidisconsideredinsidethecavitytoaugmentheattransferrate.Galerkinweightedresidualmethodoffiniteelementanalysisisappliedforthenumericalsimulations.Numericalsolutionisobtainedfordifferentsolidvolumefractionsofnanofluid(?=0-0.15),Grashofnumbers(Gr=0.1?5000)andReynoldsnumbers(Re=0.31?1000)inlaminarflowregime.Specialattentionisgivenontheanalysisofflowatthepuremixedconvectionregime.ItisfoundthatGrashof,ReynoldsandRichardsonnumbersalongwithsolidvolumefractionofnanofluidhavesignificanteffectonheattransfercharacteristicsinsidethecavity.ResultsarepresentedusingstreamlineandisothermcontoursalongwithrelatedvariationofaverageNusseltnumbersoftheheatedwallandaveragefluidtemperatureinsidethecavity.