氢冷发电机安装手册.docx
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氢冷发电机安装手册.docx
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氢冷发电机安装手册
СONTENTS
1INTRODUCTION4
2PURPOSE5
3TECHNICALDATA6
3.1MainParametersoftheGeneratorattheRatedPressureand
RatedTemperatureofCoolingMedia6
3.2GeneratorMechanicalData6
4GENERALDESCRIPTIONOFGENERATORDESIGNANDOPERATION7
5GENERATORCOMPONENTS9
6ERECTIONDEVICES,TOOLSANDACCESSORIES10
7SAFETYPRECAUTIONS11
8GENERATORMONITORINGANDMEASUREMENTSYSTEM13
9ERECTION14
9.1GeneralRequirements14
9.2ListoftheErectionOperations16
9.3InstallationoftheFoundationPlates.19
9.4InstallationoftheStator20
9.5AssemblyandInstallationoftheEndTerminals22
9.6ErectionoftheRotor23
9.7AssemblyoftheBearing24
9.8InstallationandRequirementsfortheShaftsAlignment25
9.9AssemblyoftheShaftSeals26
9.10InstallationoftheThermalControlInstruments31
9.11InstallationoftheTransformersontheNeutralTerminals31
9.12Installationofthenoiseabsorbingenclosure31
10TESTSANDINSPECTIONS32
11STARTING-AND-ADJUSTMENTWORK33
11.1TrialStart33
11.2AdjustmentWork34
11.3ConnectiontothePowerSystem35
11.4ComplexTrialOperation35
11.5TerminationoftheComplexTrialOperation36
12GENERATORCOMMISSIONING37
13LISTOFFIGURES38
APPENDIXАInstallationoftheExternalSheild44
APPENDIXВListofOverallDimensionsandWeightsoftheTurbogenerator
MainAssemblieswhichshallbeLaidoutDuringtheErection
intheTurbineHall46
APPENDIXСListofMediaRequiredDuringtheTurbogeneratorErection48
1INTRODUCTION
ThisErectionManualisintendedtogiveguidancefortheassembly-and-erectionandstarting-and-adjustmentworkofthesynchronousturbogeneratorofTBB-1000-2У3typeatthenuclearpowerplant.
TheManualgivestheprincipaltechnicalcharacteristicsoftheturbogenerator,describesitsdesignandrequirementsonerection.Therequirementslaiddownhereinshallbestrictlyobserved.
TheManualalsogivessometechnologicalrecommendationsontheproceduresoferectionandstarting-and-adjustmentwork.TheproceduresindetailaredevelopedbytheErectionOrganizationsonthebasisofthisManualandthesetoftechnicaldocumentssuppliedtogetherwiththeturbogenerator.
Thedataontheexcitationsystem,theexciter,hydrogen-andwater-coolingsystemsandthesystemofthermalcontrolaswellasrequirementsontheirerectionaregiveninthetechnicaldocumentsforthesesystems,whichareincludedinthesetofservicedocuments.
Anintegralpartofthetechnicaldocumentsaretheassembly-and-erectionand
starting-and-adjustmentworklogbookswheretothedataobtainedduringtheturbogeneratorassembly,erection,startupandtestsarerecorded.
2PURPOSE
Thethree-phasesynchronousturbogeneratorofТВВ-1000-2У3type(hereinafterreferredtoas"thegenerator")isdesignedtoproduceelectricenergyunderthecontinuousoperatingconditionsS1asperGOST183-74(IEC-34-1),whenbeingdirectlycoupledtothesteamturbineandinstalledindoorsatnuclearpowerplants.
ThegeneratorismanufacturedinclimatictypeУ,category3asperGOST15150-69andGOST15543-70tooperate:
1)atanaltitudeofnomorethan1000mabovesealevel;
2)atanambientairtemperaturefromplus5°Ctoplus35°C.
Theenvironmentisexplosion-proofanddoesnotcontainanydustinconcentrationsreducingthegeneratorparameterswithintheimpermissiblelimits.
ThedustcontentintheNPPpowerhousehallshallnotexceed4mg/m3.
Theaverageservicelifeofthegeneratorisforty(40)yearsprovidedallthetermsandscopeofthescheduledinspectionsandrepairsareobserved.
3TECHNICALDATA
3.1MainParametersoftheGeneratorattheRatedPressureandRatedTemperatureofCoolingMedia
—activepower,kW
1000000;
—totalpower,kVA
1111000;
—powerfactor
0.9;
—statorvoltage,V
24000;
—statorcurrent,А
26730;
—speedofrotation,min-1
3000;
—frequency,Hz
50;
—numberofthestatorwindingphases
3;
—statorwindingphaseconnection
doublestar;
—numberofthestatorwindingterminals
9.
3.2GeneratorMechanicalData
Criticalspeedsofrotation,min-1(I/II/III)
700/1950/3400;
Geometricalgasvolumes,m3:
—assembledgenerator
126;
—togetherwiththehydrogensystem
133;
—generatorstator
135;
Weights,kg:
—rotor
90300;
—woundstatorwithsupportingliftingbrackets(maximumweightforerection),withoutendparts
335000;
—bearingwithafoundationplate
16000;
—statorendpartwithsupportingliftingbrackets
34150;
—generatorwithoutanexciter
568000;
—noiseabsorbingenclosure
5100;
—foundationplates
18500.
WeightcharacteristicsoftheotherunitsofthegeneratorandexciterarelistedinAppendixBtothepresentManual.
4GENERALDESCRIPTIONOFGENERATORDESIGN
ANDOPERATION
Thegeneratorisanon-salient-polesynchronouselectricalmachine.Itconsistsofastationarypart(stator)whichincludesacoreandawindingconnectedtotheexternalpowersystemandarotatingpart(rotor)whichcarriesafieldwindingsuppliedwithrectifiedcurrent.
Themechanicalenergytransmittedfromtheturbineshafttothegeneratorrotorshaftisconvertedintoelectricalenergyaccordingtotheelectromagneticprinciple:
thedirectcurrentflowingthroughtherotorwindingproducesamagneticfluxwhichinducestheelectromotiveforceandelectriccurrentwithafrequencyof50Hzinthestatorwinding.
Thelossesinthestatorandrotorwindings,magneticcircuits(statorcoreandrotorshaft)aswellasthemechanicallossescausedbytherotorrotationinthegasmedium(windagelosses)andfrictioninthebearingsandshaftsealsareremovedinsidethegeneratorwithdistillatedwater(fromthestatorwinding),withhydrogen(fromtherotorwindingandstatorcore)andwithoil(fromthebearingsandshaftseals).Allthelossesareremovedintotheexternalenvironmentwithservicewaterintheheatexchangersandgascoolers.
GeneratorprotectiondegreeisIP55accordingtoIEC-34-5.
Thegas-tightstatorcasingconsistsofthreeparts:
onemediumandtwoendparts.Themediumpartplacesthestatorcoreandwinding,theendpartsaredesignedfortheverticalgascoolers,statorwindingterminalsandwatersupplypipelinesofthestatorwindingwatercoolingsystem,andelectricheaters.
Thestatorendsareclosedbyexternalshieldswheretotheshaftoilsealsarefastened.
Allthreepartsareresteduponthefoundationwiththehelpofsupportingliftingbrackets,whichareremovedduringtransportation.
Thestatorwindingisofathree-phasetypewithtwoparallelbranches,thewindingsaredouble-starconnected.
ThestatorandrotorwindinginsulationisofclassF,thepermissiblehighesttemperatureofthegeneratoractiveparts—classB.
Thestatorwindingterminalsarelocatedatthebottom(line)andatthetop(neutral)ofthestatorendpartsontheexciterside.
Thesupportbearingontheexcitersideisoutboardofapedestaltype,thesupportbearingontheturbinesideisincludedintheturbineset.
Theshaftoilsealsareofacirculartype.
Thedistillateinthestatorwindingcirculatesunderapressureproducedbythepumpsanditiscooledintheheatexchangersinstalledoutsidethegenerator.
Thecoolinghydrogencirculatesinthegeneratorundertheactionoffansmountedontherotorshaftanditiscooledbythegascoolersbuiltintothestatorcasing.
Thecoolingwatercirculatesinthegascoolersandheatexchangerswiththehelpofthepumpslocatedoutsidethegenerator.
Theoilsupplyofthegeneratorandexcitersupportbearingsiscarriedoutfromtheturbineoilsystem.
Theoilsupplyofthegeneratorshaftsealsiscarriedoutfromtheindependentsystem.
Thegeneratorisexcitedfromabrushlessexcitercoupledwiththegeneratorshaftandconsistingofathree-phaseinverted-typesynchronousgenerator.Thealternatingcurrentisrectifiedwiththehelpofasetofrotatingsemi-conductingrectifiers—diodes.
ThegeneralviewofthegeneratorwithexciterisshowninFigure4-1.
5GENERATORCOMPONENTS
Theturbogeneratoriscomposedofthefollowingunits:
1)generatorconsistingofthefollowingcomponents:
—statorandshields;
—terminalswithcurrenttransformersandvoltagetransformersintheneutralandflexiblecompensatorsoflinearterminals;
—rotor
—gascoolers;
—supportingbearing;
—shaftseals;
—foundationplates;
2)exciter;
3)equipmentandinstrumentationofthegeneratorhydrogencoolingsystem;
4)equipmentandinstrumentationofthegeneratorstatorwindingwatercoolingsystem;
5)equipmentandinstrumentationofthegeneratorshaftsealsoilsupplysystem;
6)equipmentandinstrumentationofthegeneratorexcitationsystem;
7systemoftechnologicalcontrolanddiagnostics;
8)noiseabsorbingenclosure;
9)erectionaccessories;
10)erectionmaterials;
11)spareparts;
12)servicedocuments.
Note—Theexternalpipelines,externalcablecouplings,embeddedpartsforthegeneratorandexciterfoundationplates,enclosuresforlineterminalsandcurrentsupplyleads,aswellascurrentsupplyleadsthemselvesarenotincludedintheturbogeneratorManufacturer’sscopeofsupply.
6ERECTIONDEVICES,TOOLSANDACCESSORIES
Asetofdevices,special-purposetoolsandaccessories(erectionfixtures)issuppliedtothenuclearpowerplanttogetherwiththefirstgenerator.
Thissetisintendedforperformingvariousassemblyanddisassemblyoperationsonthegeneratoranditscomponentsduringerectionanddifferentrepairs.
Thesetconsistsof:
1)deviceforinsertion/removaloftherotorinto/fromthestator,whichincludestheinternalandexternalbogies,liningsheet,devicefortherotorsuspension,safetypartsandmaterials;
2)deviceforfitting-onand
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