報(bào)關(guān)員實(shí)習(xí)報(bào)告報(bào)告實(shí)習(xí)報(bào)告

1、報(bào)關(guān)員實(shí)習(xí)報(bào)告：報(bào)告實(shí)習(xí)報(bào)告報(bào)關(guān)員實(shí)習(xí)：實(shí)習(xí)報(bào)告there?Afterignition,combustionshouldfocusitsattentiononwhat?Reducingboilerhotlossmeasures?DC-whatarethemaincharacteristicsoftheboiler?BoilersteamafterBaoBiwenhow?whenshutdowntocontrolsteamdrumwalltemperaturedifference?Fromarunstandpoint,whatarethemainmeasurestoreducecoalconsu

2、mptionforpowersupply?Talkabouthowtocontrolthewaterlevel?Generatoraftersplitting,6KVwhytopromptlyexitthestandbypowerswitch?Whythecurrenttransformersecondarysideintheoperationarenotallowedtoopen?Whysynchronousgeneratorexcitationcircuitofthedegaussingswitchcanbechangedintoalivelybreaker?Generatorstep-u

3、pprocess,whytherotorandstatorcurrentstomonitor?Whyarerotoronepointgroundproneto2ndafterground?Try380Vdiscussedfollowingthegroundingofauxiliarypowersystem,wiringforthree-phasefive-limbterminalofPTsecondaryvoltagechange?Generatorincompletephaseoperationprincipleiswhat?Yn,d11(Y0/-11)connectionofgenerat

4、or-transformersystems,generatoropen-phaserunninganyhelp?Whytoinstall100%statorgroundingprotectionforlargegenerator?Whydoesnotallowrunningsecondaryshortcircuit?Generatorexcitation,excited,whatistheoftheoverexcitationlimit?Generatorlossofexcitationintherunning,whatistheimpactonthesystemandthegenerator

5、itself?Anti-cuozhongonthepreventionofexcitationsystemofgeneratorcausedbyfaultwhatdamage?trydiscussingwhatarethemeasuresofimprovingpowersystemdynamicstability?Whatisaswitchingoperationoftheelectricalequipment?maincontentswitchingoperationofpowerplantsandpowersystemsarethere?Trydiscussingmalignantelec

6、tricmisoperation,whichmisusepersonal,mostoftheequipment?Switchservicepowerfastcuttingdeviceinseveralways?inthealternatetotheState,thestandbypowerswitchrefusedtodealwith?Trydiscussingswitchingoperationsshouldfocusonpreventingmisoperationaccident?Newoperationoraftermajorrepairoftransformerswhytest?Try

7、discussingstepsmeasuredwithaMeggerinsulationresistanceofelectricalequipment?LumethodisusedtofindDCgroundingconsiderationarewhat?whentherearetwopointgroundingwiththepolarityshouldbe.1.600MWsupercriticalsupplementaryquestions,blankminidiskcanbedividedintomanualandtwooilturbine;oilturbinediscwheelcar,t

8、heturningspeedoftherotorcanbecontrolledataround80120RPM(highspeed),anditisfulfilledbycontrollingaccesstotheoil-pressureturbineoilturningon/offandspeedlevel.Medium-speedCoalmillexplosion-proofsteamfromawindroom,_,_separatorcasingintothegroundtopreventthemillexplosionintheprocessofstartingandstopping.

9、Millloadistoacceptcurrentsignaltothecoalcontrolproportionalpressurereliefvalvesize,changeofhydraulicaccumulatorsandhydrauliccylinders,toachieveloadchanges.SealedAirforcoalpulverizerdrive,Rodbearings,roller.Coldwindofauserwithasealedairblowerair,sealedair,groundcoaltoacoldwind.Turbinesealingoilprimar

10、yoilsourceisair-sidesealoilpump,thefirstalternateoilsources(mainlyalternativeoilsource)isthemainoilpumpofturbine.Whentheprimaryoilsourcefailure,thefirstsparesourceautomaticputintooperation.SecondalternateoilsourcesprimaryalternatesupplyACelectricsealingoilpumponthefueltank,whentheturbinespeedislesst

11、han2/3ratedspeedorfirstalternatesourcefailureoccurs,thesecondsparesourceautomaticswitch.ThirdalternativeoilsourceisprovidedbyDCsealingoilpump.Mainfueltankexhaustthrottleshouldbelocated2steelclosingdooroperationhandwheellockingisnotallowedandobviouswarningsignsshouldbehung.Steamengineroomcaughtfire,w

12、henitthreatenedtotankorfuelsystem,shallimmediatelydestroythevacuumemergencystop,andturnonthetankaccidentputthethrottle,speedandcontrolonoilshouldbeappropriate,toensurethattherotorslubricantsarenotinterruptedbeforestatic.Shaftsealoverflowoverflowto#8thelowpressureundernormalconditions,when#8thelowpre

13、ssureoverflowwhentheoutagetothecondenser.Slidingpressureoperationofdeaeratormayavoiddeaeratorsteamsourceforthrottlinglosses.Normaloperationofsteamturbinesteamdistributionmodeforsteamdistributionnozzle.Aftertheturbinesstopped,iftherotorcannotrotateforashorttime,rotor_underbending,highestin_highsatthi

14、spointrotorshouldbereset,closethehydrophobic_cylinder,keeping_upanddowntemperaturedifferencebetweencylinder_monitorrotor_deflection,whenafteryouverifythattherotoris,andthenmanuallyturning180o.Whenturningthemotorovercurrentorrotordiscdoesntmove,donotforciblybarring_,butcannotturn_forced_orturningthec

15、ranebroke.Stopturning_8_hourslater,tostopthelubeoilsystem.Condensatepumpsduetotransportationofsaturatedwater,thepumpismostpronetocavitation_,thereforeiscomposedof_inducer_,andatthetimeofinstallationensurethepumpinlethassomehighly_intrusion,anddesign_exportrecycled_tubes,alsoinordertosolvethisproblem

16、.Whenthecondenserwhenthewaterlevelistoolow_settingup_pumpsareturnedon,intotheairtopreventthepumpdesign_sealwater,preventthepumpoutputisnotnormal.Threadedtubewithinawaterwall,deteriorationofheattransferdoesnotoccur.Xturbinecoldstarts,heattransferofsteamtothecylinderwallisbasedoncondensationheattransf

17、erandconvectiveheattransferintwowaysatthesametime.(X)thefurnacehigherexcessaircoefficient,smallerchemicalheatlossduetoincompletecombustion.()Boilerofsodaexpansionisinevitable.-upStartincorporations,boiler-DCoperation,adjustmentofmainsteamtemperaturecontrolinacoal-waterratiobetweenpoints.Asingleswirl

18、burnerburningadjacentburnersarenotrequiredtosupport.Swirlburnerswithdifferentrotationdirectionwillaffecttheboilersteamtemperatureandloadparameters.Xboilersteamflowisdividedwithdoublebuilt-instartupseparatordesignedforcommunityprocess.Duringcombustionofpulverizedcoalinboiler,oxygencontent,thelowerthe

19、NOxisproducedmore.Whenthe-gaswaterratioimbalances,once-throughboilersteamtemperatureateachpointinthetripwillchange,andclosertothepoptourentrance,inertiaandhysteresistemperaturechangeissmaller.Indisguiseneartheheattransfercoefficientofsteamincreasestoamaximumatfirstandthenquicklylower.Controlofstart-

20、upseparatoroutletsteamtemperature,thatcontrolstheboilerheatingandevaporation,thermalheatdistribution.asthedirectcurrentrequirementsforoperationoftheboilerfeedwaterqualitywasmuchhigherthanthatofdrumboiler,inonce-throughboilerstart-upprocess,thereforethereisnoneedforfurnacewashingofSilicon.()UPtheboil

21、erissubcriticalandsupercriticalparameterscanbeusedinthefurnace,workingoneortwotimes,connectingmultiplehybrid,hasahighermassflow,suitableforlargesupercriticalpressureonce-throughboiler.(X)this-isthebiggestcharacteristicofevaporatingheatingsurfaceofboilertubeswererepeatedlyincreasedtheverticaltubescre

22、en,usingmixedheaderandnotinthemiddleofheateddroptubeinseriestoeachother.DuetothetemperaturedifferencebetweendifferentPanelnexttothepipe,thermalstress,membranewaterwallofseamdamage.Check()thespiralwaterwallinadditiontoimportandexportislocatedoutsidethebox,nomixingheaderinbetween,duetoitsarrangementof

23、furnacesizedoesnotaffect,evenheatheatlowerrorswillnotresultintheunevendistributionofsteam-watermixture.(X)supercriticalandsubcriticalcase,whenthewaterisheatedtotheappropriatephasetransitiontemperatureunderpressure,allvaporizeintosteam.(X)directcurrentboiler,waterintosteamsteam-watertwo-phaseregiondo

24、esnotexist.Theexperiencedheatingandhotwaterintosuperheatedsteamintwostages.()Phasetransitionundersupercriticalpressure,whenallwatervaporizedintosteamtemperature,alsoknownasthecriticaltemperature.Differentpressurephasetransitiontemperature.(X)intheareanearthephasetransitionpoint,thespecificvolumeofre

25、frigeranttorisesharply,andthegreatestspecificheatatconstantpressure.(supercriticalpressures,thespecificheatofwaterincreaseswithtemperature,thespecificheatofsteamdecreaseswithincreasing)temperature.()Underinsubcriticalonce-throughboilerevaporatingheatingsurfaceofmultiplevaluesthatappearunsteadyflow,t

26、hemainreasonisalowenthalpyofevaporatingheatingsurfaceinletwater.Sointhelow-loadoperationmustrestrictentrylowenthalpyofwater.(X)theflowofrefrigeraevaporatingheatingsurfaceofambiguityexistonlyinspiralwallverticatubecoilsdnotexist.rationEcationandtraining.(3)technologycanguideoperatorsworkonthe

27、business,readytosolveengineeringproblems.(4)thetextclearlytechnicalproblemswiththecardsonthetableandretaintheoriginalinformationtothepersonsconcerned,goodtechnicalapprovalandvisainatimelymanner.4,dataadministratorresponsibilities(1)isresponsibleforalltheprojectfiles,datacollection,production,binding

28、,collating,storage(hand)andsoon.(2)assistconstructionprojectd“otherfucktechnical“anandengineeringquality,safety,andeducation.(3)tohelpthestaffdisclosureofproductiontechnology,securitytechnology,andcollectingkeepwritteninformationinatimelymanner.(4)withthepersonnelconcernedtocarryoutthemeasurementofq

29、ualityandsafetychecks,andtechnicalinformation.(5)accordingtothedata,totheconservationsectionchiefswillreportonthesituation.Fourjobagencies,conservationmanagementtoachievegoodconservation,achieveastandard,wemustestablishasoundmanagementsystem,toensuresmoothprogress.Undertheunifiedleadershipandmanagem

30、entatdifferentlevels,toensurethattheconcentrationofdecision-makingpowerandunityofcommand,andachainofauthority,managementatdifferentlevels;Divisionoflaborandcooperation,sothattheworkinggroupstowardsthedirectionofprofessionaldevelopmenttoensurecorporategoalsandconservationComponentobjectivesofcoordina

31、tion,collaborationonthevariousfunctionsofthebodyinaction,coordinationbetweenthefunctionaldepartmentsandmanagers,theentiremanagementorganizationstoensurethatcapable,efficient,multi-functional.UndertheChongqingMunicipallandscapingmanagementstandardsandthetechnicalspecificationsofurbanlandscapingprojec

32、tsadoptthefollowingapproachworkingmechanism.Willthisunitdedicatedtotheconservationsectionisdividedintofourgroups:thetreesandshrubstotheconservationgroup(responsibleformeasuressuchastheshading);full-timemechanicalmaintenancegroup(responsibleforwatering,cooling,sprayduringtheday),lawnmaintenancegroups

33、andplantgroups.Sectionwithgardenplantprofessionalengineer1,eachequippedwiththeprofessionaltechnician1,2technicians,carryouttheirduties.BytheResidentEngineeroftheconservationsectionchiefsandmarketinggraspworkandcoordination.Afterfive,lawnmaintenanceandmanagementofplantconstruction,oftenwitha1-2lawnma

34、intenancecangrowintothefullnessoftheweek.Afterthelawngrow,butalsotocarryoutregularmaintenanceandmanagement,toensurethelawnlandscapecontinuesforalongtime.Lawnmaintenancemanagementincluding:irrigation,fertilization,pruning,weedingandotherlinks.1,irrigateirrigationlawnfertilityenvironmentscanbeimproved

35、,addingwaterplantthelawn,isaguaranteeofnormallawn.Inviewofthelawnduringthegrowthseason,lawnandtheenvironmentisinaStateofflux,coordinationofwaterandsoilandimprovingthemicroclimateoftheCenter,watercannotbeimplementedaccordingtoafixedpattern,followinganumberoftechnicalpointsforreference.(1)theirrigatio

36、ntimegrowingseason,accordingtothedifferentperiodsofprecipitationisextremelyimportantandtimelyirrigationofdifferentgrassspecies.Cangenerallybedividedintothreeperiods:turnedgreenbeforetherainyseason.Hightemperaturesduringthisperiod,transpiration,waterrequirements,andisoneofthemostcrucialirrigationunde

37、rsoilwaterretentionpropertiesofstrengthandrainyperiodsduringwhichBush2-4.largelyceasedduringtherainyseasonirrigation.Airhumidityduringthisperiod,grasstranspirationdecreasedsoilmoisturecontenthasincreasedtoalevelsufficienttomeettheneedsoflawngrowth.toyellowingoftheleafafterthisperiodbeforetherainysea

38、sonprecipitation,evaporationisgreater,whilethelawnisstillinagreatstageoflifeactivities,comparedwiththeprevioustwoperiods,lawnwaterrequirementsincreaseatthisstage,ifnottimelyirrigation,notonlyaffectthegrowthofgrass,alsocausesyellow.Atthisstage,accordingto4-5ofirrigation.Inshort,grasstypes,waterrequir

39、ementsaredifferent,youmustAccordingtotheclimateconditionsandplantspeciestodetermineirrigationofthelawn.Aboutaday,whenirrigationisbetterdependsonirrigation.Intheory,thesameperiodaslongastheamountofirrigationwaterislessthantheinfiltrationcapacityofthesoil,irrigationallthetimeinaday.Thendependsontheirr

40、igationway.Ifintermittentintermittentsprayorsprayirrigation(highdegreeofatomization),irrigationisbestwiththeSun.Notonlycanaddmoisture,butalsosignificantlyimprovethemicroclimateandphotosynthesisandtranspirationandgasexchange,facilitatedthecoordinationofwater,air,fertilizerandsoilthermalandvegetativeo

41、rgansofrootandrootexpansion,andcouldleadtheentiretransitstorageoftheplantmaterial,breathing,lawnsandlush.Ifusingwater,irrigation,andsoon,shouldbewatchingseason,earlyspring,lateautumnaroundtheheelaswellandtheresttaketwilightasmuch.(2)irrigationirrigationquantityshouldbebasedonthesoil,growing,grassand

42、otherfactorstodetermine.Generallawngrowingseasondroughtperiod,takesaboutaweektopay20-40mm;vigorouslygrowinglawnintheheatandseveredroughtsituations,needtopay50-60mmperweekormore.InGeneral,regardlessofthemethod,shouldbeirrigatedmorethanonce,eachtimelesswater,maximumsurfacerunoffthatjustoccurred.2,fert

43、ilizingtomaintainlawndarkgreenleaves,grows,portionsmustbefertilized.Lawnplantsforleafgrowthandblossom-freerequirements,sonitrogenismoreimportant,responsetonitrogenfertilizeristhemostobvious.Shouldbebasicapplicationinbuildinglawn,lawnbuiltingrowingseasonrequiredafterapplyingfertilizer.Coldseasongrass

44、dressingtimeisbestinearlyspringandfall.Afterthefirstgreen,canplayaroleinfacilitatingthegrowthofsecondinspring,aftertheweatherturnedhot,youshouldstopdressing.Fertilizationinautumnon9,October.Appliesfertilizerthetimeislatespringofwarm-seasongrasses.Inamonthor2monthsofgrowingseasontobecaughtupwithferti

45、lizer.Increasingthedensityoffoliage,improveresistancetosteppingon.Fertilizingshouldnotbelateforthelasttimeinmid-September.3,trimPruningisthefocusoflawnmaintenance,butisthemostintensivework.Trimcontrollawnheightofthetillers,increasingthedensityofleaves,weedsandlawnneatandbeauty.Generallawntrimmedatle

46、ast4-5timesayear,pruneandtrimthenumberofheightisrelatedtotwofactors.Lowerthecuttingheightrequirements,pruningmoretimes.Leavesofgrassdensityandcoveragealsoincreaseswiththenumberoftrimandmore.Itshouldbenotedthatinaccordancewithregularmowingthegrasscuttingheight,whenupto1.5timestheheightofthegrass,trim

47、twicetimesthemaximumshallnotexceedthespecifiedheight.4,weedweedinvasionwillseriouslyaffectthequalityofthelawn,turflostuniformandneatappearanceandpurposeweedandgrasscompetitionforwater,fertilizer,racetheSun,sothatobjectivegrassgrowthdecline,soweedisanessentialpartoflawnmaintenanceandmanagement.Thefun

48、damentalmethodsofweedpreventionandremovalistherationalmanagementofwaterandfertilizer,grassgrowthpromotionpurposes,increasecompetitivenesswithweeds,andmultipletrim,suppressweeds.Caseagainstweeds,inadditiontousingartificialrejects,Ialsousechemicalherbicides,suchaskillingdicotyledonousweedswith2.4-dcla

49、ss;usingximajin,prometryn,Diuron,closedsoilinhibitedgerminationofweedgerminationorkillweeds;sterilantherbicide,Diuron,andotherlawnorlawnweedcontrolofupdates.Herbicideuseiscomplicated,effectchangeoveranumberoffactors,improperusecancausegreatlossesandthereforeshouldbecarefullytestedbeforeuseandprepara

50、tion,concentration,toolsusedshouldberesponsible.5,thepiercedholesonthelawnofventilationholes,aimstoimprovetheventilationofroots,soilmoisturecontent,toimprovetheeffectoffertilization.Theworktoimprovethequalityofturfplaysanimportantrole.Generalrequirementsfor50points/m2,15cmx5cmholespacingandholediame

51、ter1.5-3.5cm,cavedeep8cmhollowIronRodman-tieholeavailable,wecanuselawnpunchingmachine(restorerootaerationmachine)purposes.Rootcuttingcombcombthegrassonthelawn,removeexcessgrass,improvethequalityofgrassgrowth.Lawnwithhadlargerloadoroftenbyloadofrole,soilharden,canusedlawnverticaltrimmachine,withmilli

52、ngknifedugwide1.5-2.0CM,andspacingfor25cm,anddeepabout18cmofditch,inditchwithinfillintomoreholematerial(asspongesoil),putdugofsoilturnedcame,andputremainingsoilshippedgo,applicationefficientfertilizer,andfillbroadcastgrassseed,strengtheningfertilizermanagement,lawncansoongrowthcomplexstrong.Six,gree

53、ncultivationandmanagementoftheemergencyremedy1,strengthenoftheseedlingsincreasedplantingmoretreesindroughtresistance.Intherightamountattherighttimeingrowingwithcompost,irrigation,promotingtreegrowth,treesugaraccumulationofnutrientsinthebodyandcanenhancethetreesresistance.Autumnfertilizationmustbesto

54、ppedassoonaspossible,soastoavoidlong,shoottoolatelignification,anti-freeze.2,protectedcrownsandroots.FillingpileofdirtattherootCrownaftercoldwinterwaterisveryeffective,usually20-30cmtallpileofdirtandsolid.3,package.Beforethewinterwithstraworrope.Thefollowingpoints:toselectagents,preventplantsfromhar

55、m.IIinthevalidrangeshoulduselowconcentrationsofpesticides.Shouldpayattentiontousingdifferentmedicamentstopreventpestresistance.mayusehighpollution,highresiduesofdrugsandinterferewitheachother,improvecontrol.plantprotectionpracticemustbeperformedtoensurethathumanandanimalsafety.Seven,plantmaintenance

56、andmanagementstandards(a),pruningstandards:1,hedgetrimmer,plasticplants:plantswithplasticrequirementsshouldbecarriedoutinashootout15cmtrim,hedgerowshouldensurethesmooth,clear,distinct.Afterthesummer,wefinallylookforwardtoshorttermbridgeengineeringpractice.Thispracticeisanessentialpartofthelearningpr

57、ocess.While,wewillininternshipofprocessintheonrealityintheofbridgehasmoredirectlyofcontactandstudy,suchonweofcoursesoflearningcertainlyisfavourableof,onthe,throughthisinternshipeveryoneonyihouofworkenvironment,andworkcontentalsohashasdeeperofunderstand,thisoniscareersemploymentofwefor,undoubtedlywil

58、lproducedisbigeffect,wethenofselectwillmoreofrationalcarefully.Aftertheinternshipisover,Iamverysatisfied.ThisinternshipIlearnedasapeoplesprideofplaceinroadandbridgeinthefuture.Itisundertheeffortsofgenerationsofpeopleinroadandbridge,bridgeconstructioninChinahasbeendevelopingbyleapsandbounds.Construct

59、ionofroadandbridgeengineeringinChinawithlargescale,highspeed,technicallevelhasbeengreatlyimproved,andinsomeareastheyhaveleadingpositionsintheworld.ForexamplethepracticeseeninHangzhouBayCross-SeaBridgeandSutongbridgeandotherheavy-weightworksallreflectthestrengthofbridgeengineering.Butinspiteofthis,we

60、wouldliketoseemylevelofsomeshortcomings,suchasinnovationinbridgedesign,asinprojectorganizationandmanagement,inarchitecture,forexampleontheuseofnewmaterials,whichareintheconstructionofbridgeengineeringgapwithadvancedcountries.Afterthisinternship,wearenational985Universitystudentsasoutstandingreservef