宁朗水电站水轮机选型及油气水系统设计摘要：当前形势下，我国拥有相对较为丰富的水资源，其相应的自然落差也相对较大，可以通过建造水电站来实现水力发电。水力发电系统中处于核心位置的部件是水轮机，所以水轮机选型及其辅助设备的设计至关重要。本篇文章是在水轮机及水力机组辅助设备两门课程基础上，通过对宁朗水电站原始资料的相关分析，进行水轮机选型以及相关辅助设备（油气水系统）的设计，并优化方案。水轮机选型设计部分包括装机方案设计和水轮机选型计算。在水轮机选型计算中,包括:水轮机型号选择、水轮机主要参数计算并进行对比分析以便最终确定出最优方案、进行水轮机运转特性曲线的绘制,包括吸出高度、等出力线、等效率线以及空化系数线的绘制等。在油系统设计中,主要包括机组润滑系统用油量的计算、透平油系统用油量及设备选择计算,进行透平油系统图的绘制。在气系统设计过程中,主要包括低压空气系统和高压空气系统的计算以及气系统图的绘制。针对供水系统的设计,主要包括水源及其供水方式的确定、空气冷却器和发电机推力轴承以及导轴承油冷却器的用水量，并进行供水系统图绘制;在排水系统设计中,主要包括排水方式确定、检修排水的计算和机组渗漏排水的计算以及排水系统图的绘制。关键字：水轮机选型；油系统设计；气系统设计；供水系统设计；排水系统设计MODELSELECTIONANDDESIGNOFOIL-GAS-WATERSYSTEMFORNINGLANGHYDROPOWERSTATIONAbstract：Underthecurrentsituation,Chinahasrelativelyabundantwaterresources,anditscorrespondingnaturaldropisrelativelylarge.Hydropowergenerationcanberealizedbyconstructinghydropowerstations.Thecorecomponentofthehydropowersystemistheturbine,sothedesignoftheturbineanditsancillaryequipmentarecritical.Thisarticleisbasedonthetwocoursesofhydraulicturbineandhydraulicunitauxiliaryequipment.ThroughthecorrelationanalysisoftheoriginaldataofNinglangHydropowerStation,thedesignoftheturbineandrelatedauxiliaryequipment(oilandgaswatersystem)aredesignedandoptimized.Theturbinedesignanddesignpartincludestheinstallationplandesignandtheturbineselectioncalculation.Intheturbineselectioncalculation,including:turbinemodelselection,turbinemainparametercalculationandcomparativeanalysistofinallydeterminetheoptimalplan,drawtheturbineoperatingcharacteristiccurve,includingsuctionheight,equaloutputline,equalefficiencylineandemptyDrawingofcoefficientlines,etc.Intheoilsystemdesign,itmainlyincludesthecalculationoftheoilquantityoftheunitlubricationsystem,theoilquantityoftheturbineoilsystemandtheequipmentselectioncalculation,andthedrawingoftheturbineoilsystemdiagram.Inthedesignofthegassystem,thecalculationofthelow-pressureairsystemandthehigh-pressureairsystemandthedrawingofthegassystemmaparemainlyincluded.Thedesignofthewatersupplysystemmainlyincludesthedeterminationofthewatersourceanditswatersupplymode,thewaterconsumptionoftheaircoolerandthegeneratorthrustbearingandtheguidebearingoilcooler,andthedrawingofthewatersupplysystem;inthedesignofthedrainagesystem,mainlyincludingdrainageMethoddetermination,maintenancedrainagecalculationandunitleakagedrainagecalculationanddrainagesystemdiagramdrawing.Keywords:turbinetypeselection；oilsystemdesign；watersystemdesign；gassystemdesign目录第1章宁朗水电站基本资料....................................................11.1电站地理位置..............................................................11.2枢纽任务..................................................................11.3水能开发方式..............................................................11.4枢纽规划主要技术指标......................................................11.4.1水库特征...
