秋季开学典礼班主任发言稿.docx
- 文档编号:5718649
- 上传时间:2022-12-31
- 格式:DOCX
- 页数:7
- 大小:24.19KB
秋季开学典礼班主任发言稿.docx
《秋季开学典礼班主任发言稿.docx》由会员分享,可在线阅读,更多相关《秋季开学典礼班主任发言稿.docx(7页珍藏版)》请在冰豆网上搜索。
秋季开学典礼班主任发言稿
秋季开学典礼班主任发言稿
秋季开学典礼班主任发言稿
there?
Afterignition,combustionshouldfocusitsattentiononwhat?
Reducingboilerhotlossmeasures?
DC-whatarethemaincharacteristicsoftheboiler?
BoilersteamafterBaoBiwenhow?
whenshutdowntocontrolsteamdrumwalltemperaturedifference?
Fromarunstandpoint,whatarethemainmeasurestoreducecoalconsumptionforpowersupply?
Talkabouthowtocontrolthewaterlevel?
Generatoraftersplitting,6KVwhytopromptlyexitthestandbypowerswitch?
Whythecurrenttransformersecondarysideintheoperationarenotallowedtoopen?
Whysynchronousgeneratorexcitationcircuitofthedegaussingswitchcanbechangedintoalivelybreaker?
Generatorstep-upprocess,whytherotorandstatorcurrentstomonitor?
Whyarerotoronepointgroundproneto2ndafterground?
Try380Vdiscussedfollowingthegroundingofauxiliarypowersystem,wiringforthree-phasefive-limbterminalofPTsecondaryvoltagechange?
Generatorincompletephaseoperationprincipleiswhat?
Yn,d11(Y0/-11)connectionofgenerator-transformersystems,generatoropen-phaserunninganyhelp?
Whytoinstall100%statorgroundingprotectionforlargegenerator?
Whydoesnotallowrunningsecondaryshortcircuit?
Generatorexcitation,excited,whatistheoftheoverexcitationlimit?
Generatorlossofexcitationintherunning,whatistheimpactonthesystemandthegeneratoritself?
Anti-cuozhongonthepreventionofexcitationsystemofgeneratorcausedbyfaultwhatdamage?
trydiscussingwhatarethemeasuresofimprovingpowersystemdynamicstability?
Whatisaswitchingoperationoftheelectricalequipment?
maincontentswitchingoperationofpowerplantsandpowersystemsarethere?
Trydiscussingmalignantelectricmisoperation,whichmisusepersonal,mostoftheequipment?
Switchservicepowerfastcuttingdeviceinseveralways?
inthealternatetotheState,thestandbypowerswitchrefusedtodealwith?
Trydiscussingswitchingoperationsshouldfocusonpreventingmisoperationaccident?
Newoperationoraftermajorrepairoftransformerswhytest?
TrydiscussingstepsmeasuredwithaMeggerinsulationresistanceofelectricalequipment?
LumethodisusedtofindDCgroundingconsiderationarewhat?
whentherearetwopointgroundingwiththepolarityshouldbe...1.600MWsupercriticalsupplementaryquestions,blankminidiskcanbedividedintomanualandtwooilturbine;oilturbinediscwheelcar,theturningspeedoftherotorcanbecontrolledataround80~120RPM(highspeed),anditisfulfilledbycontrollingaccesstotheoil-pressureturbineoilturningon/offandspeedlevel.Medium-speedCoalmillexplosion-proofsteamfromawindroom,_,_separatorcasingintothegroundtopreventthemillexplosionintheprocessofstartingandstopping.Millloadistoacceptcurrentsignaltothecoalcontrolproportionalpressurereliefvalvesize,changeofhydraulicaccumulatorsandhydrauliccylinders,toachieveloadchanges.SealedAirforcoalpulverizerdrive,Rodbearings,roller.Coldwindofauserwithasealedairblowerair,sealedair,groundcoaltoacoldwind.Turbinesealingoilprimaryoilsourceisair-sidesealoilpump,thefirstalternateoilsources(mainlyalternativeoilsource)isthemainoilpumpofturbine.Whentheprimaryoilsourcefailure,thefirstsparesourceautomaticputintooperation.SecondalternateoilsourcesprimaryalternatesupplyACelectricsealingoilpumponthefueltank,whentheturbinespeedislessthan2/3ratedspeedorfirstalternatesourcefailureoccurs,thesecondsparesourceautomaticswitch.ThirdalternativeoilsourceisprovidedbyDCsealingoilpump.Mainfueltankexhaustthrottleshouldbelocated2steelclosingdooroperationhandwheellockingisnotallowedandobviouswarningsignsshouldbehung.Steamengineroomcaughtfire,whenitthreatenedtotankorfuelsystem,shallimmediatelydestroythevacuumemergencystop,andturnonthetankaccidentputthethrottle,speedandcontrolonoilshouldbeappropriate,toensurethattherotorslubricantsarenotinterruptedbeforestatic.Shaftsealoverflowoverflowto#8thelowpressureundernormalconditions,when#8thelowpressureoverflowwhentheoutagetothecondenser.Slidingpressureoperationofdeaeratormayavoiddeaeratorsteamsourceforthrottlinglosses.Normaloperationofsteamturbinesteamdistributionmodeforsteamdistributionnozzle.Aftertheturbinesstopped,iftherotorcannotrotateforashorttime,rotor___underbending,highestin_____highsatthispointrotorshouldbereset,closethehydrophobic____cylinder,keeping__upanddowntemperaturedifferencebetweencylinder_monitorrotor____deflection,whenafteryouverifythattherotoris,andthenmanuallyturning180o.Whenturningthemotorovercurrentorrotordiscdoesn'tmove,donotforciblybarring_____,butcannotturn__forced_orturningthecranebroke.Stopturning_8__hourslater,tostopthelubeoilsystem.Condensatepumpsduetotransportationofsaturatedwater,thepumpismostpronetocavitation_____,thereforeiscomposedof__inducer__,andatthetimeofinstallationensurethepumpinlethassomehighly______intrusion,anddesign_exportrecycled__tubes,alsoinordertosolvethisproblem.Whenthecondenserwhenthewaterlevelistoolow_settingup__pumpsareturnedon,intotheairtopreventthepumpdesign_____sealwater,preventthepumpoutputisnotnormal....Threadedtubewithinawaterwall,deteriorationofheattransferdoesnotoccur.Xturbinecoldstarts,heattransferofsteamtothecylinderwallisbasedoncondensationheattransferandconvectiveheattransferintwowaysatthesametime.(X)thefurnacehigherexcessaircoefficient,smallerchemicalheatlossduetoincompletecombustion.(√)Boilerofsodaexpansionisinevitable.√Start-upincorporations,boiler-DCoperation,adjustmentofmainsteamtemperaturecontrolinacoal-waterratiobetweenpoints.√Asingleswirlburnerburningadjacentburnersarenotrequiredtosupport.Swirlburnerswithdifferentrotationdirectionwillaffecttheboilersteamtemperatureandloadparameters.Xboilersteamflowisdividedwithdoublebuilt-instartupseparatordesignedforcommunityprocess.√Duringcombustionofpulverizedcoalinboiler,oxygencontent,thelowertheNOxisproducedmore.√Whenthegas-waterratioimbalances,once-throughboilersteamtemperatureateachpointinthetripwillchange,andclosertothepoptourentrance,inertiaandhysteresistemperaturechangeissmaller.√Indisguiseneartheheattransfercoefficientofsteamincreasestoamaximumatfirstandthenquicklylower.√Controlofstart-upseparatoroutletsteamtemperature,thatcontrolstheboilerheatingandevaporation,thermalheatdistribution.(X)asthedirectcurrentrequirementsforoperationoftheboilerfeedwaterqualitywasmuchhigherthanthatofdrumboiler,inonce-throughboilerstart-upprocess,thereforethereisnoneedforfurnacewashingofSilicon.(×)UPtheboilerissubcriticalandsupercriticalparameterscanbeusedinthefurnace,workingoneortwotimes,connectingmultiplehybrid,hasahighermassflow,suitableforlargesupercriticalpressureonce-throughboiler.(X)this-isthebiggestcharacteristicofevaporatingheatingsurfaceofboilertubeswererepeatedlyincreasedtheverticaltubescreen,usingmixedheaderandnotinthemiddleofheateddroptubeinseriestoeachother.DuetothetemperaturedifferencebetweendifferentPanelnexttothepipe,thermalstress,membranewaterwallofseamdamage.Check(√)thespiralwaterwallinadditiontoimportandexportislocatedoutsidethebox,nomixingheaderinbetween,duetoitsarrangementoffurnacesizedoesnotaffect,evenheatheatlowerrorswillnotresultintheunevendistributionofsteam-watermixture.(X)supercriticalandsubcriticalcase,whenthewaterisheatedtotheappropriatephasetransitiontemperatureunderpressure,allvaporizeintosteam.(X)directcurrentboiler,waterintosteamsteam-watertwo-phaseregiondoesnotexist.Theexperiencedheatingandhotwaterintosuperheatedsteamintwostages.(√)Phasetransitionundersupercriticalpressure,whenallwatervaporizedintosteamtemperature,alsoknownasthecriticaltemperature.Differentpressurephasetransitiontemperature.(X)intheareanearthephasetransitionpoint,thespecificvolumeofrefrigeranttorisesharply,andthegreatestspecificheatatconstantpressure.(√)Undersupercriticalpressures,thespecificheatofwaterincreaseswithtemperature,thespecificheatofsteamdecreaseswithincreasingtemperature.(√)Underinsubcriticalonce-throughboilerevaporatingheatingsurfaceofmultiplevaluesthatappearunsteadyflow,themainreasonisalowenthalpyofevaporatingheatingsurfaceinletwater.Sointhelow-loadoperationmustrestrictentrylowenthalpyofwater.(X)theflowofrefrigeraevaporatingheatingsurfaceofambiguityexistonlyinspiralwallverticatubecoilsdnotexist.√Evaporation...educationandtraining.(3)technologycanguideoperatorsworkonthebusiness,readytosolveengineeringproblems.(4)thetextclearlytechnicalproblemswiththecardsonthetableandretaintheoriginalinformationtothepersonsconcerned,goodtechnicalapprovalandvisainatimelymanner.4,dataadministratorresponsibilities
(1)isresponsibleforalltheprojectfiles,datacollection,production,binding,collating,storage(hand)andsoon.
(2)assistconstructionproject"fuck"andothertechnicalandengineeringquality,safety,andeducation.(3)tohelpthestaffdisclosureofproductiontechnology,securitytechnology,andcollectingkeepwritteninformationinatimelymanner.(4)withthepersonnelc
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 秋季 开学典礼 班主任 发言稿