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1、大连交通大学信息工程学院2010届本科生毕业设计(论文)外文翻译大连交通大学信息工程学院毕业设计(论文)外文翻译学生姓名专业班级机械班 指导教师职称 所在单位机械工程学院 教学部主任 完成日期20年6月16日14大连交通大学信息工程学院2010届本科生毕业设计(论文)外文翻译PneumaticTransmissionSimilartohydraulictransmission,pneumatictransmissionperformsthefunctionofenergytransferandcontrolbythemediumofflow.Theyha
2、veagreatdealincommonintheaspectsofworkingprinciple,components’structure,systemcompositionandgraphicsymbol.Thereadersshouldnoticetheirdifferences.Apneumaticsystemincorporatesthefollowingcomponentsanddevices:(1)Airsupplydevices:Theyincludepressuregenerationdevices,airregenerationand
3、storingdevices,F.R.L.(airfilter,pressurereducingvalveandoilmistlubricator)combination,etc.Itprovidesqualifiedcompressedairforpneumaticsystems.(2)Actuators:Theyconvertthecompressedairpressureintomechanicalenergy,suchasaircylindersandairmotors.(3)Controlelements:Theyareusedtocontrol
4、thepressure,flowrateandmovingdirectionforthecomponents,suchasvalves.(4)Pneumaticattachments:Theyincorporatethecomponentswhichareusedtocool,silence,purify,andlubricatecompressedairandthosetojointeachcomponent.1.1AirSupplyDevicesAirsupplydevicesareusedtoprovidecompressedairforpneuma
5、ticsystems.Anairsupplydeviceisanimportantpartofapneumaticsystem,whichsuppliesqualifiedcompressedair(withacertainleverofpressure,flowrateandpurification)forthepneumaticsystem.Generally,forthedeliverysurpassesorequals6-12m³/min,acompressedairstationisneeded.Butforthedeliverylessthan
6、6-12m³/min.theaircompressorcanbemountedbesidesthepneumaticequipmentdirectly.Anairsupplydeviceincorporatesfourparts:pressuregenerationdevices,airregenerationandstoringdevices,airlinesandF.R.L.combination.Normallythefirsttwopartsarelocatedincompressedairstationasacentertosupplygasin
7、industryorworkshop.Aircompressor:pressurizeatmosphericair;Cooler:coolcompressedair;condensewaterandhydrocarbonvapours;Oilandwaterseparator:removegrosssolidandliquidparticulates;Receivers:airstorage;settlingchamberforparticulates;coolair;Airdryer:furtherreducewaterandoilvapourconte
8、nt;Airfilter:furtherremovedesicca