单级离心泵设计论文

西安石油大学本科毕业设计（论文）单级离心泵设计摘要：本设计从离心泵的基本工作原理出发，进行了一系列的设计计算。考虑离心泵基本工作性能，流量范围大，扬程随流量而变化，在一定流量下只能供给一定扬程（单级扬程一般10～80m）。本设计扬程为50m，泵水力方案通过计算比转数（n=67.5）确定采用单级单吸结构；通过泵轴功率的计算确定选择三相异步电动机；由设计参数确定泵的吸入、压出口直径；通过叶轮的水力设计确定叶轮的结构以及叶轮的绘型；设计离心泵的过流部件，确定吸入室为直锥形吸入室，压出室为螺旋形压出室；设计轴的结构及进行强度校核；确定叶轮，泵体的密封形式及冲洗，润滑和冷却方式；通过查标准确定轴承，键以及联轴器，保证连接件的标准性。从经济可靠性出发，合理设计离心泵部件，选择标准连接件，保证清水离心泵设计的安全性，实用性，经济性。关键词：离心泵工作原理；水力方案设计；叶轮和过流部件设计；强度校核；密封设计；键、轴承的选择西安石油大学本科毕业设计（论文）CentrifugalPumpDesignManualAbstract:Thisdesignstartingfromthebasicworkingprincipleofthecentrifugalpump,conductedaseriesofdesigncalculations.considerthebasiccentrifugalpumpperformance,flowinawiderange,liftvarieswiththeflow,theflowcanonlysupplysomelift(single-stageliftisgenerally10~80m).Thedesignheadis50m,thedesignofthepumphydraulicschemebycalculatingthenumberofrevolutions(n=67.5)todeterminethesingle-stagesingle-suctionstructure;choiceofmotorshaftpowercalculation;designparameterstodeterminethepumpsuctionoutletdiameter;determinethestructureoftheimpellerandtheimpellerofthedrawingofthehydraulicdesignoftheimpeller;flowpartsofthedesignofcentrifugalpumpsuctionchamberforstraightconicalsuctionchamber,pressedoutofthespiral-shapedpressurechamber;thestructureandstrengthcheckoftheaxisdesign;determinetheimpellercentrifugalpumpsealdesign,pumpclosedformandwashing,lubrication,coolingmethod;determinedbycheckingthestandardbearings,andcouplingtoensurethatthestandardconnection.Departurefromtheeconomicviabilityoftherationaldesignofcentrifugalpumpcomponents,selectthestandardconnector,toensurethewaterusingacentrifugalpumpdesignsafety,practicality,economy.Keyword:Centrifugalpumpworkingprinciple;Hydraulicdesign;Componentdesignoftheimpellerandtheovercurrent;Strengthcheck;Sealdesign;Thechoiceofkeyandbearing西安石油大学本科毕业设计（论文）I目录1绪论....................................................................................................................12电动机的选择.....................................................................................................22.1原动机概述...............................................................................................................32.2原动机选择...............................................................................................................32.2.1泵有效功率.................................................................................................32.2.2泵轴功率.....................................................................................................32.2.3泵计算功率.................................................................................................32.3.4选择电动机.................................................................................................43泵主要设计参数和结构方案确定.........................................................................53.1设计参数...................................................................................................................53.2泵进出口直径...........................................................................................................53.2.1泵吸入口径sD............................................................................................53.2.2泵排出口径iD............................................................................................53.3泵转速.......................................................................................................................53.4泵水力结构及方案...................................................................................................63.5泵的效率...................................................................................................................73.5.1泵总效率.....................................................................................................73.5.2机械损失和机械效率.................................................................................73.5.3容积损失和容积效率.................................................................................83.5.4水力损失和水力效率.................................................................................84离心泵泵轴及叶轮水力设计计算.........................................................................94.1泵轴及其结构设计...................................................................................................94.1.1泵轴传递扭矩.............................................................................................94.1.2泵轴材料选择.............................................................................................94.1.3轴结构设计.................................................................................................94.2叶轮进口直径0D...................................................................................................104.3叶片入口边直径1D................................................................................................104.4叶片入口处绝对速度1.........................................................................................114.5叶片入口宽度1b.....................................................................................................114.6叶片入口处圆周速度1u.................................................................................