轴流泵的设计-本科生毕业设计

本科生毕业论文毕业论文题目轴流泵的设计学生姓名阮天一所在学院能源与动力工程学院专业及班级热动0901指导教师陈松山完成日期2013年6月2日扬州大学本科生毕业论文I摘要本毕业设计的项目是可调叶片式轴流泵——即叶片可调节倾斜角度。泵设计最主要的是水力设计——叶片及导叶的水力设计。叶片的水力设计采用两种方法：圆弧法和升力法。经分析比较：采用圆弧法设计的轴面投影图叶片更为光滑，难度相对更高。采用升力法设计的轴面投影图虽然比圆弧法设计的稍微差点，但是，由于当今国内的制造水平对于三维曲面的加工还相对落后，即使是好的设计也是难以加工出来的，对于空间曲面加工效果好的机床是五轴联动机床，国内包括在国内的外企，拥有五轴联动机床的公司屈指可数。回头来看升力设计法，这种水力设计法虽然可能相对简陋，但是它简单实用，可操作性强，更加适合初级设计人员，对于本科毕业生来说是更好的操练工具。导叶则采用的是流线设计法。由于导叶是按锥面分流线，所以设计为空间导叶。水力设计之后是结构设计。结构设计决定着泵的受力情况，影响到泵的许多零件的强度问题，所以也是相当重要的。此次设计主要依据关醒凡教授的《现代泵设计手册》进行水力设计，所有图纸均采用AutoCAD软件绘制。关键词：轴流泵水力设计叶片导叶扬州大学本科生毕业论文IIAbstractTheobjectofthegraduatedesignistodesignanadjustablepump--justaswhatitissaidthatitsbladesareadjustable-pitches.Themostimportantstepindesigningapumpiswaterpowerdesign-thedesignofthebladesandleadblade.Therearealwaystwomethodstobeusedtodesignpumpcyclemethodandpeacemethod.Putthetwotogether:wefindthattheresultaftercyclemethodisbetter,thebladesdesignedwithitaremorevelvet,butitismoredifficult.Comparedwiththecyclemethod,althoughthepeacemethodissimple,howeverforpresent,manufacturinglevelisnotcomponentinthree-dimensionalproductsproducing.Ithinktheremustbestandoutengineering,goodconceiveandgooddesignhome,butwhyalltheseadvantagethingscan’tcometotrue,mainlybecauseIthinkthatthereareafatlotfive-axislinkagemachinesindomesticcompanies,evenincludesexternalcorporationsinChina.Andletmelookbacktothepeacemethod,althoughthemethodcouldbesimper,itismorepractically,beeasytodealwith,anditismoresuitableforthefirstclasspersonnel,andisapracticetool.Theleadbladesaregoingtodesignwithstreamlinemethod.Becausetheleadbladesarepartitionedthroughcone,soitwillbedesignedintovacuumleadblade,andadoptthetwisttrianglemethodtoproduct.Configurationdesignfollowswaterpowerdesign.Configurationdesigndeterminesthepressedconditionsofpump,anditwillimpactmuchmostintentionofthepart,soitisalsoveryimportant.ThedesignofhydrauliccomputationisonthebasisofModernpumpdesignhandbookeditedbyprofessorGuanXingfan.AllthedrawingsadoptthesoftwareofAutoCAD.Keywords:axialflowpumphydraulicdesignvaneguidevane扬州大学本科生毕业论文III目录摘要................................................................................................................................................IAbstract.............................................................................................................................................II目录..............................................................................................................................................III第一章概述....................................................................................................................................1一、轴流泵的特点和工作原理................................................................................................1二、我国轴流泵模型发展概况................................................................................................1三、设计意思和目的................................................................................................................2第二章叶轮设计............................................................................................................................3一、叶轮的水力设计................................................................................................................3（一）叶轮设计流程........................................................................................................3（二）叶轮基本参的选择数............................................................................................3（三）流线法设计叶片....................................................................................................5（四）选定截面及计算....................................................................................................7二、叶轮绘型..........................................................................................................................15（一）叶片绘型说明......................................................................................................15（二）确定叶片旋转轴线位置......................................................................................16（三）各截面展开图......................................................................................................16（四）木模图绘制..........................................................................................................19（五）叶片的轴面投影图..............................................................................................20第三章导叶设计..........................................................................................................................22一、导叶的水力计算..............................................................................................................22（一）导叶基本参数计算..............................................................................................22（二）流线法设计导叶..................................................................................................22二、导叶的绘型......................................................................................................................27（一）导叶绘型说明...............................................................