氢冷发电机安装手册.docx

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