水电站水利机械及厂房的初步设计毕业设计计算书

水电站水力机械及厂房部分的初步设计摘要本设计为水电站初步设计，主要包括水轮机选型设计、调速系统、水力机组辅助设备及主厂房布置等四部分的设计内容。水轮机选型设计部分：依据原始资料初步确定机组的台数和机型，从而形成了四种设计方案，然后对四种方案的技术参数进行计算和比较，精选出两种方案作为备选方案；同过绘制两个方案的综合运转特性曲线和等吸出高度线，进行比较后确定一个方案作为设计的最终方案，然后，算出所确定方案的蜗壳和尾水管参数调速系统部分：根据发电机负荷的增、减，调节进入水轮机的流量，使水轮机的出力与外界的负荷相适应，让转速保持在额定值，从而保持频率（f=50Hz）不变或在允许范围内变动。自动或手动启动、停止机组和事故停机。当机组并列运行时，自动地分配各机组之间的负荷.关键词：水轮机;水力机组辅助设备;调节保证计算;蜗壳;尾水管水电站水力机械及厂房部分的初步设计HYDRAULICMACHINERYANDHYDROPOWERPLANTPARTOFTHEPRELIMINARYDESIGNAbstractThegraduationbearSJstationhydraulicmachineryandplantpartsofthepreliminarydesign.Accordingtotheexistingrawmaterialsandsomecountriesnationaldesignaccordingtothedesign,themaincontentsare:hydropowerunitcapacitychoiceandcomparethevariousoptionsforturbinemodelselection,scrolldeterminethesizeofthetailpipetodeterminethesize,speedandthebutterflymodelselection,determinethesizepowerhouse,tailracechannellayout,formselection,theamountofexcavation,etc.,anddrawuponrequestandthecorrespondingcross-sectionalviewfloorplan.SJprovinceincentralChinapowerplantonariverbasinhydropowerstation,locatedinthecounty12kilometersupstreamofthedamsiteareainexcellentcondition,twomoreslopestability,powerstationafterthecompletionoftheprovince'scentralregionwillsupplybaseloadandpartoftheshoulderpeakload,isalsoconsideringphasing.Thepowerplantdesignheadof57m,unitcapacity150000kW,atotalofthreeunitswithatotalinstalledcapacityof450000kW.Keywords:hydropower，hydropowerinstalledcapacity,generator,turbin-e,governor,plant.水电站水力机械及厂房部分的初步设计目录第一章基本资料.......................................................................................................................11.1设计依据.......................................................................................................................11.2基本设计资料...............................................................................................................1第二章水轮机选型计算...........................................................................................................22.1机组台数......................................................................................................................22.2水轮机型号的选择.......................................................................................................32.3方案IIHL260（4X115MW）的计算计算.....................................................................82.4水轮机运转综合特性曲线........................................................................................122.5蜗壳及尾水管的水力设计.........................................................................................142.6水轮发电机的选择....................................................................................................19第三章水轮机调速系统.........................................................................................................233.1计算和确定有关参数.................................................................................................233.2接力器的选择.............................................................................................................313.3调速器的选择.............................................................................................................323.4油压装置的选择.........................................................................................................33第四章水电站辅助系统.........................................................................................................354.1油系统........................................................................................................................354.2气系统........................................................................................................................384.3供水系统....................................................................................................................434.4排水系统....................................................................................................................45第五章起重设备及厂房设计.................................................................................................495.1起重设备.....................................................................................................................495.2主要附属装置.............................................................................................................495.3主要工作参数的选择.................................................................................................505.4主厂房内部布置.........................................................................................................515.5主厂房各高程的确定.................................................................................................515.6主厂房的总长度.........................................................................................................535.7厂房的宽度.................................................................................................................545.8副厂房布置.................................................................................................................55参考文献....................................................................................................................