刮板输送机外文翻译文献Word文档格式.docx

刮板输送机外文翻译文献Word文档格式.docx

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刮板输送机外文翻译文献@#@刮板输送机外文翻译文献@#@（文档含中英文对照即英文原文和中文翻译）@#@Minescraperconveyorsoft-startmode@#@ofselectionandapplication@#@　Highyieldandhighefficiencyinthecoalminefullymechanizedcoalfaceofthebuilding,tofacebig-long,largetosupporttherequirementsofthepowerofShearerandscraperconveyor.Ordinaryfullymechanizedcoalfaceofthelong-generalinabout150m,scraperconveyortransportcapacityof500t/haroundhighyieldandhighefficiencyandfullymechanizedcoalfaceofthelong-Generalto180~300m,scraperconveyortransportcapacityof800t/handabove,therefore,conveyorpowergreatergrowth.PingdingshanCoalMiningGroupCompanytoasanexample,thescraperconveyorofpowerinmost400（2×@#@200）kWandabove,thelargestforthe750（2×@#@375）kW.Scraperconveyortothestart-uplaunchedmainlytwo-speed,limitedbyasmallnumberoffillinghydrauliccoupler,whichstartedtwokindsofways,notonlyoperatingcosts,anditstandshigh.Therefore,theneedtoseeknewtechnologyandequipmenttomeettherequirementsofhighyieldandhighefficiency.@#@一、currentsituationandexistingproblems@#@　　

（一）limitfillinghydrauliccouplerinthehigh-power,bigload,itssize,whenitwiththemotorandreducerconnection,thegreatertheshareofspace.Limitedspaceintheworkoftheoccasion,toomuchvolumewillscraperconveyorlayoutdifficult.Coupledwithincreasedhydraulictransmissiondistanceandhigh-speedrotatingstateandeasytohaveagreaterimpactontheradialdynamicload,andtheslowdowncausedbyelectricalinstallationsdamaged.Coupledwiththeinputandoutputspeedthanthespeedofusuallynomorethan97percent,thatisimpossibletoachieveinputshaftandoutputshaftofsync,whichmustexistgreaterpowerloss,reducingtheefficiencyofthetransmissionsystem.@#@　　

（二）two-speedmotordrivesystemiscurrentlyinChina'@#@sminingscraperconveyorincommon.Undernormalcircumstances,theratedspeedmotortostartthehalf,correspondingtostartmotorpowerisalsoratedpowerofthehalf.Tolow-speedmotorlaunch,whenthecompletionoftheprocessinitiatedaftertheswitchtohigh-speedoperation,fromstarttothenormaloperationofsub-levels,inpart,reducetheimpactofthelaunch.Inthiswaytousethespecialtwo-motorwinding,two-andtwo-speedcablerootswitch.Two-speedmotorcomplexstructure,highcost,powersupplysystemequivalenttotwoMotors,low-speedswitchingnoteffectivelycontrolled,thepointoffailure,equipmentcables,atthesametime,thefaultlineswillbedoubledtheincrease.@#@二、soft-startseveraladvancedmethodsofcomparison@#@　　

（一）thyristorsurgesoft-startmode.Starttheprocesslaunchedattheslope,pulseconflictjumpstart,speeduptheslope,fastslope.Pulseconflictwaycanjumpstartthebiggestshort-termoutputofover95percentoftheratedvoltage,toimposeashort-timegreatstartingtorque（equivalentto90percentofdirectstartingtorque）,toovercomethestaticfrictionandtheinertiaofthetransmissionsystem.Thissoft-startapproachandbroadprospectsforapplication.@#@　　

（二）viscousliquidtransmissionsoft-startmode.DodgeisatypicalU.S.companyCST（consecutivestarttransmission）soft-startdevices.CSTsoft-startdevicescurrentlyreliesmainlyonimports,highprices,thegeneralmineunbearable.CST-mechanical,hydraulic,electroniccontrol,cooling,materialsforintegrated,manufacturing,high-precisioncontrol,supplyofsparepartsinparticularinconvenience.Scraperconveyorismovingequipment,changingworkenvironment,theextremelybadconditions,equipmentfailureratecorrespondinglyincreased,thegreaterdifficultyofmaintainingthehigheroperatingcostsandnarrowworkspaceconstraintsoftheCSTinChinamineAFCMachineapplications.@#@　　（三）Frequencysoft-startmode.Scraperconveyorused,itsperformanceadvantagesnotplay;@#@expensive,thegeneralmineunbearable;@#@componentsuseditspowerIGBTmodules,high-voltageIGBTmoduleoftheinternationalembargoonChina,soitsdifficulttovoltagelevelsTo1140V,toitscoalmineconveyorontheapplicationhasbroughtgreatdifficulties.@#@ @#@　（四）SRM-drivenapproach.SRMisanewdriver,inothersectors（suchasthetextileindustry,machinerymanufacturing,washingmachines,etc.）haveaverywiderangeofapplications.Themainfeatureisactivatedwhenthecurrentlowtorque,speedperformance,andeasytousepureelectriccontroltoachievesteplessspeedregulation,andlongrun.MotorexclusiveuseofSRM,butflow,notburningmotor,withgoodprospectsfordevelopment.ComponentsusedforpowerIGBTmodule,itisverydifficulttoachievevoltage1140V.Thecurrenthigh-powerexplosionSRMisstillinthedevelopmentstage,thebulksmaller,highercost,notsuitablefortheundergroundminescraperconveyorapplication.@#@　　（五）soft-startmode.Taiyuan,t