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成都理工大学工程技术学院毕业设计螺旋蜗杆式空气压缩机结构设计专业：机械工程及自动化姓名：张三指导老师:向渝讲师全套图纸及过程联系师兄:QQ370532467螺旋蜗杆式空气压缩机结构设计-I-摘要螺旋蜗杆式压缩机是一种比较新颖的压缩机，因其可靠性高、操作维修方便、动力平衡性好、适应性强等优点，而广泛地应用于矿山、化工、动力、冶金、建筑、机械、制冷等工业部门。螺旋蜗杆式压缩机已经超过所有工业压缩机的50％，其市场份额超过80％，今后其市场份额还将继续扩大。可见，研究螺旋蜗杆式压缩机具有十分重要的意义。本课题主要是设计通用的喷油螺旋蜗杆式空气压缩机，采用单边不对称摆线-销齿圆弧型型线，阴、阳转子齿数比为6：4。设计新型转子型线，目的是使接触线长度、泄漏三角形面积和封闭余隙容积3者达到最优化设计，以进一步提高螺旋蜗杆式压缩机的机械性能。重点研究的是螺旋蜗杆式压缩机的转子型线设计、几何特性、受力分析、热力学计算。关键词：螺旋蜗杆转子型线啮合线齿间容积受力特性螺旋蜗杆式空气压缩机结构设计-II-AbstractThetwin-screwcompressorisakindofnewlyemergingcompressor.Becauseofitshighreliability,easyrepair,goodbalanceandgoodadaptabilityetc,andwidelyappliedtosuchindustrialdepartmentsasmine,chemicalindustry,power,metallurgy,architecture,machinery,refrigeration,etc.Bydesigningtheproject,thevolumetricefficiencyis70%,thecompressedtemperatureismore80℃。Itisveryimportanttodesignandresearchatwin-screwcompressorinindustrial.Theprojectistodesignauniversaltwin-screwaircompressor,andtoadoptsinglesideasymmetricsweptlineunilaterallyanddoweltoothcircularrotorprofile.Therearesixlobesonthefemalerotorandfourlobesonthemalerotor.Theaimofdesigninganewrotorprofileistooptimizethecontactlinelength,blowholeareaandclearancevolume.Thatcanimprovethemechanicalperformanceofatwin-screwcompressorfurther.Theprojectismainlytoresearchatwin-screwcompressorrotorprofile,geometrycharacteristic,mechanicsanalysis,thermodynamicscalculationKeywords：Atwin-screwcompressor,rotorprofile,meshcurve,toothspacevolume.螺旋蜗杆式空气压缩机结构设计-III-目录摘要.................................................................................................................................IAbstract......................................................................................................................II目录..............................................................................................................................III前言.......................................................................................................................-1-1螺杆压缩机简介................................................................................................-2-1.1螺旋蜗杆式压缩机的特点和应用前景..............................................-2-1.1.1.螺旋蜗杆式压缩机的特点.............................................................-2-1.1.2.螺旋蜗杆式压缩机的应用前景....................................................-3-1.2螺旋蜗杆式压缩机的基本结构和工作原理.....................................-4-1.2.1.基本结构.............................................................................................-4-1.2.2.工作原理.............................................................................................-4-2螺旋蜗杆式压缩机转子型线设计................................................................-8-2.1转子型线设计原则...................................................................................-8-2.1.1.转子型线及其要素..........................................................................-8-2.1.2.转子型线设计原则..........................................................................-9-2.2型线方程和啮合线方程..........................................................................-9-2.2.1.坐标系建立及坐标变换.................................................................-9-2.2.2.齿曲线及其共轭曲线.....................................................................-11-2.2.3转子加工方法...................................................................................-13-2.3单边不对称摆线-销齿圆弧型线........................................................-14-3几何特性及其计算.........................................................................................-24-3.1齿间面积和面积利用系数...................................................................-24-3.1.1齿间面积............................................................................................-24-3.1.2面积利用系数...................................................................................-24-3.2齿间容积及其变化过程........................................................................-25-3.2.1.齿间容积...........................................................................................-25-3.2.2.齿间容积的变化.............................................................................-25-3.3扭角系数及内容积比............................................................................-28-3.3.1.扭角系数...........................................................................................-28-4螺旋蜗杆式压缩机的结构设计...................................................................-30-4.1螺旋蜗杆式空气压缩机螺杆尺寸的确定........................................-30-螺旋蜗杆式空气压缩机结构设计-IV-4.2压缩机运行与维护..................................................................................-31-5螺旋蜗杆式压缩机的力学计算...................................................................-32-6径向力的计算..................................................................................................-33-6.1径向力.........................................................................................................-33-6.1.1.坐标系...............................................................................................-33-6.1.2.计算工况.....................................................................