型双吸单级离心泵设计说明书.doc

600S-75型双吸单级离心泵设计摘要：本文重要介绍了600S-75型双吸单级离心泵的设计计算过程。重要涉及离心泵的整体结构设计、水力设计计算、压水室的设计计算、吸水室的设计计算及重要零部件的校核。本设计中的离心泵是具有一个叶轮的双支撑中开式离心泵。该离心泵具有通过优化设计的双吸式叶轮，从而使离心泵所受轴向力大为减小。叶轮叶片的叶型具有良好的水力性能，具有较好的抗汽蚀性能和较高的工作效率。该离心泵采用了螺旋形压水室，泵腔中的水流量轴对称，水力性能良好，具有相对较小的水力损失。吸水室采用了半螺旋形结构，该结构吸水室的截面均分布，叶轮进口流速均匀。该离心泵具有结构简朴，稳定性良好，便于安装及拆卸检修等一系列优点，并且加装有自吸装置，可以在不安装底阀，没有真空泵，不倒灌的情况下，实现自动吸水，自行启动。关键词：双吸单级离心泵、叶轮、压水室、吸水室Thedesignof600S-75Single-stagedouble-suctionCentrifugalpumpsAbstract:Thispaperdescribesthedesignandcalculationprocessof600S-75single-stagedouble-suctioncentrifugalpump.Mainlyincludesthedesigncalculationsofoverallstructural,hydraulic,pressurizedwaterchamber,suctionchamberandthecheckingofthemaincomponents.Thepumpinthispaperisapumpwithdoublesupportstructureandonlyhasoneimpeller.Thecentrifugalpumphasthedoublesuctionimpellerwhichhasbeenoptimizationdesigned,sothatthecentrifugalpumpaxialforceisgreatlyreduced.Thehydraulicperformanceofthebladeprofileisgood,.sotheanti-cavitationperformanceandworkefficiencyofthepumparehigh.Thecentrifugalpumpadoptsthespiralpressurizedwaterchamber,thewaterflowaxisymmetriccavityofthepump,hydraulicperformanceisgoodandthehydrauliclossisrelativelysmall.TheSuctionchamberadoptsthesemispiralstructure,thecrosssectionofthestructureofsuctionchamberaredistributed,theimpellerinletvelocityuniformity.Thecentrifugalpumphastheadvantagesofsimplestructure,goodstability,aseriesofadvantagessuchasconvenientinstallationanddisassemblyandmaintenance.Theself-suctiondevicecanstartthepumpwithoutthevalve,vacuumpumpandsituation.Keywords:single-stagedouble-suctioncentrifugalpump,impeller,pressurizedwaterchamber,Suctionchamber.目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc"引言PAGEREF_Toc\h1HYPERLINK\l"_Toc"1.600S-75型双吸单级离心泵的重要设计参数PAGEREF_Toc\h3HYPERLINK\l"_Toc"2600S-75型单级双吸离心泵的结构设计PAGEREF_Toc\h3HYPERLINK\l"_Toc"2.1泵整体结构的设计4HYPERLINK\l"_Toc"2.2泵重要部件的设计4HYPERLINK\l"_Toc"3600S-75型双吸单级离心泵的水力设计计算6HYPERLINK\l"_Toc"3.1拟定泵的进出口直径6HYPERLINK\l"_Toc"3.2汽蚀计算7HYPERLINK\l"_Toc"3.3拟定比转速7HYPERLINK\l