2016年建筑材料采购合同范本[1]

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.√Star