热动毕业论文

CENTRALSOUTHUNIVERSITY本科生毕业论文(设计)题目混凝土拖泵整体式环保作业舱设计学生姓名王建指导教师杨莺副教授学院能源科学与工程学院专业班级热动0605完成时间2010年6月10日I摘要本设计对拖式混凝土泵的发展概况、发展趋势以及存在的问题进行了介绍，并对混凝土拖泵环保舱的作用及优缺点进行了分析。对环保仓内四个舱室的结构进行了逐个介绍，并对环保仓的基本结构进行了设计，使其满足降噪和散热目的。对柴油机正常运转时散发的热量进行了计算，并在此基础上计算了冷却系统的风量、散热器的迎风面积和冷却面积。提出了增加导流罩的方案，并分析了导流罩安装位置对环保舱降噪和散热的影响。分析了隔音室的结构及降噪原理，并据此对隔音室进行了具体设计。最后分析了强化传热的原则，并对混凝土拖泵环保舱进行了强化传热研究。本设计为封闭罩体内的降噪和强化传热研究提供参考和依据。关键词：环保舱：降噪；强化传热；IIAbstractInthispaper，developmentoverview，trendsandproblemsofthetrailerconcretepumpwereintroduced.Therolesofenclosureofthetrailerconcretepumpandadvantagesanddisadvantagesofthatwereanalyzed.ThestructureoffourcompartmentswasIntroducedonebyone,andthebasicstructureofencloserwasdesignedinordertosatisfytheneedofnoisereductionandcooling.Theheatthatwasemittedbydieselengineduringnormaloperationwascalculated.Onthisbasis,airflowofcoolingsystem,frontalareaandcoolingareaofradiatorwerecalculated.Proposalswereputforwardtoincreasethedome.Theimpactofdomeinstallationlocationonnoisereductionandcoolingwasanalyzed.Thestructureofencloserandnoisetheorywasanalyzed,andonthisbasis,detailoftheencloserwasdesigned.Atlast,theprincipleofheattransferenhancementwereanalyzed,andheattransferenhancementofencloserwasstudied.ThisdesignprovidereferenceandbasisofnoisereductionandenhancedheattransferstudywithinanencloserKeyword:encloser:noisereduction:heattransferenhancement:III目录摘要及关键词……………………………………………………………IAbstractandKeywords……………………………………………………II第一章文献综述.........................................11.1引言..............................................................................................................11.2混凝土拖泵的发展概况..............................................................................11.3拖式混凝土泵存在的问题..........................................................................41.4拖泵的发展趋势..........................................................................................41.5环保舱的作用与优缺点..............................................................................71.6本课题主要研究内容..................................................................................8第二章整体式环保作业舱总体结构设计.....................92.1混凝土拖泵的结构......................................................................................92.2混凝土拖泵整体式环保作业舱结构布置.................................................102.2.1机械室...........................................................................................102.2.2液控室............................................................................................112.2.3发动机室........................................................................................112.2.4风扇...............................................................................................132.3环保舱基本结构方案设计........................................................................142.4本章小结....................................................................................................15第三章整体式环保作业舱传热方案设计....................163.1环保舱冷却系统设计计算........................................................................163.1.1环保舱冷却系统的结构设计........................................................163.1.2冷却系统热计算和散热器的确定................................................183.2风扇和导流罩的选择设计........................................................................233.3本章小结....................................................................................................27第四章整体式环保作业舱隔音方案设计....................284.1隔音罩结构和降噪原理分析...................................................................284.1.1利用反射噪声的方法达到隔声效果............................................284.1.2利用吸音的方法实现降躁...........................................................294.2混凝土拖泵隔音室技术要求...................................................................304.3防噪方案的要求.......................................................................................31IV4.4拖式混凝土泵隔音室具体设计...............................................................324.4.1背景技术.......................................................................................324.4.2设计方案.......................................................................................334.4.3实施方式.......................................................................................334.4.4优点...............................................................................................374.4.5关键点和保护点...........................................................................374.5本章小结...................................................................................................37第五章整体式环保作业舱强化传热研究....................385.1强化传热的原则........................................................................................385.2环保舱强化传热研究................................................................................405.3本章小结....................................................................................................41第六章总结............................................42参考文献................................................43致谢....................................................441第一章文献综述1.1引言混凝土泵是将混凝土沿管道连续输送的机械