机械毕业设计1038矿用轴流式通风机结构设计

I摘要分析此次通风机结构设计，属于矿用轴流通风机，考虑到开采时会有大量的有害气体溢出，而且包含可能引起爆炸的高浓度瓦斯气体的原因。随着开采深度的增加，气温也要逐渐升高，这些因素对于井下工作人员的身体健康和矿井的安全生产都是极为不利的，更严重的会对井下工作人员和矿井安全产生巨大危害。调查了国内当今的趋势，此设计采用对选矿用通风机，采用两极电机驱动的方式，对对旋风机的优点进行了进一步的了解，故采用对旋风机。根据所给的设计参数及有关的设计要求。具体内容包括：通风方式的选择，总体结构方案的确定，叶轮的设计，疏流罩、扩散器和集流器的设计和选择，通风机消声装置的设计。本次设计更加注意对旋通风机的消音问题，注重了电动机的隔爆设计。关键词:对旋;防暴;轴流通风机;消音器IIAbstractThestructuraldesign,theventilatortomographybelongstomineaxialfan,consideringtheminingwillhaveplentyofharmfulgases,andcancausehighconcentrationsofgasexplosion.Alongwiththeincreaseofminingdepth,temperaturewillgraduallyrise,thesefactorsforundergroundworkpersonnel'shealthandsafetyofcoalproductionareextremelydetrimentaltothemoreserious,theworkingpersonnelofundergroundminesafetyhazardsandtremendous.Asurveyofthecurrenttrendofdomestic,thedesignoftheconcentrationpolarization,withfanmotordrivingmode,onthemeritsofthewhirlwindmachine,thefurtherunderstandingofcyclonemachine.Accordingtothedesignparametersanddesignrequirements.Contentsinclude:overallselectionofventilation,design,structuraldesign,flowoftheimpeller,diffuser,andrunoff,designandselectionofthedesignoffansilencer.Thedesignoftheventilatortopaymoreattentiontotheproblem,payattentiontothemotordeadenedtheisolationdesign.KeywordsTospinriotaxialfanmufflerIII目录摘要...........................................................IAbstract.........................................................II第1章绪论.............................................................................................................11.1选题的意义...............................................11.2国内外现状和发展趋势.....................................11.3设计的主要内容...........................................3第2章结构设计方案的选择和确定.............................................................................42.1结构方案图的选择...........................................42.2比较两种结构的优缺点.....................................5第3章通风机总体结构设计.................................................................................103.1通风方式的确定...........................................103.1.1抽出式通风.........................................103.2.2压入式通风..........................................103.2结构方案简图设计........................................123.3主要结构形式的选取......................................123.3.1扩散器.............................................133.3.2集流器与流线罩.....................................143.3.3叶轮...............................................143.3.4外壳...............................................153.3.5确定通风机各级风压比...............................153.3.6选择电动机的功率和型号.............................15第4章叶轮的结构设计.......................................................................................184.1第一级叶轮的设计............................................................................................184.1.1确定叶轮毂比及轮毂直径...................................................................184.1.2确定计算截面.......................................204.1.3叶片几何尺寸的计算.................................204.1.4叶片的绘制.........................................234.1.5叶轮强度计算.......................................254.1.6键的校核...........................................28IV4.2第二级叶轮的设计........................................294.2.1确定叶轮毂比及轮毂直径.............................294.2.2确定计算截面.......................................304.2.3叶片几何尺寸的计算.................................314.2.4叶片的绘制.........................................33第5章主要结构部件的设计选型.................................................................................365.1集流器与流线罩的设计....................................365.1.1集流器的设计.......................................365.1.2流线罩的设计.......................................365.2扩散器的设计............................................385.3通风机轴向间隙和径向间隙................................385.3.1径向间隙的计算.....................................385.3.2轴向间隙的计算.....................................395.4风筒的选择..............................................405.4.1风筒选用要求...........................................................................................405.4.2局部通风机的风筒选型.........................................................................41第6章消声器的设计.............................................42结论.............................................................44致谢.............................................................45参考文献.........................................................46附录.............................................................47VCONTENTSAbstract.........................................................IIChapter1Introduction...........................................................................................11.1Thetopic......................................................................................................11.2Statusanddevelopmenttrend.....................................................................11.3Themaincontentsofthedesign..................................................................3Chapter2Theselectionofdesignschemeandstructure...................................42.1Structureschemeselectionofdiagram...........................