锅炉安装说明书英文78MAM印度S厂300MWWord文件下载.docx

锅炉安装说明书英文78MAM印度S厂300MWWord文件下载.docx

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Preparedby:

Checkedby:

Reviewedby:

Approvedby

DONGFANGBOILER（GROUP）CO.,LTD.

P.R.CHINA

CONTENTS

DESCRIPTION

1.Boilergeneraldescription

2.Erectiontechnicaldocuments

3.Erectionpreparation

4.Boilererection

4.1Generalrules

4.2Erectionofboilersteelstructureandtopplates

4.3Erectionofboilerhangersandsupports

4.4Erectionofboilerpressureparts

4.4.1Drum,Druminternalsanddrumhangers

4.4.2Waterwallsandbuckstays

4.4.3Coilsofsuperheater,reheater,economizer

4.4.4Connectionpipes,pipingandaccessories

4.5Erectionofburnerandoilsystem

4.6Erectionofairpreheater

4.7Erectionofboilersealdevice

4.8Constructionofboilerwalls

5.Hydraulictest

6.Preparationbeforeboilercommission

7.168hourcommission

Explanation

1.ThisErectionInstructioniswrittenforDG1025/18.2-

13boiler.Astheerectionofboilershalldependupontheassemblysite,liftingequipment,erectionexperienceanderectionenvironment,etc.,thisinstructionjusthighlightsthefundamentaltechnicalrequirementsandnoticesduringboilererection.Theyareusedasareferencefortheunitinchargeofconstructionduringworkingonerectionprograms,organizingandundertakingerection.

2.BoilerinspectionandacceptanceshallfollowthetechnicaldocumentsstipulatedintheContract.SiteerectionmayfollowtherelativecodesofElectricalPowerMinistryofChinasuchastheSpecificationforElectricalPowerConstructionandAcceptance,andshallbeincompliancewiththerequirementsofmanufacturer’sdrawingsandtechnicaldocuments.

3.CommentsarewelcomeforanyincorrectnessofthisInstruction.Ifproblemsarefoundduringerection,pleasetimelyconferwithourDBCSiteRepresentativesonsolutions.

1.0BoilerGeneralDescription

1.1Boilermodel

Thisboilerisdesignedfor300MWsteamturbinepowergeneratingunit.Itisasubcriticalpressurenaturalcirculationcoal-firedboiler,whichadoptsfour-cornerstangentialfiring,singleΠ-shapefurnace,oncereheat,balanceddraft,fullsteelstructureanddryashextractionboiler.Forthedetailsaboutboilerstructure,pleaserefertoBoilerManual（78M-SM）andrelativedrawings.

1.2Boilermainparametersareasfollows:

Ratedunitcapacity300MW

Ratedsteamcapacity913.5t/h

Max.continuousrating1025t/h

SHsteamoutletpressure（BMCR）17.5Mpa

SHsteamoutlettemperature540℃

RHsteamflow（BMCR）841.9t/h

RHsteaminlet/outletpressure（BMCR）3.83/3.64MPa

RHsteaminlet/outlettemp.（BMCR）318/540℃

Feedwatertemperature（BMCR/BECR）281/272℃

1.3TheboilerisoffullsteelstructureandreversedUarrangement.Exceptrotaryairpreheatersandbottomashremovalequipment,theboilerproperissuspendedbytopplates.

1.4Theboilerisofairtightstructure,withmembranewaterwallsmadeoffinnedtubesarrangedaroundthefurnace.

1.5PaneldivisionSHandPlatenSHarearrangedattheupperfurnace.WallRHsarearrangedatthefrontwallandtwosidewallsinthepaneldivisionareaofthefurnace.MediumtemperatureRH（32pieces）isarrangedabovethefurnacearch.HTSHandHTRHarearrangedinthelevelpassinturn.Therearpassisdesignedwithsteamcooledwalls.PSHisarrangedattheupperrearpassandeconomizerunderPSH.

1.6TwoLjunstromtrisectorrotaryairpreheatersarearrangedatthetailofrearpass.Wetwater-sealashremovaldeviceisarrangedbelowfurnacecoldashhopper.PCburnersandoilignitersarearrangedatthefourcornersoffurnace.,

1.7Feedwaterheatedbyeconomizerflowsintodrumandaftermixingwiththewaterinthedrum,entersintodowncomers,andthenentersintothelowerheadersforthefront,rearandsidewaterwallsthroughconnectingpipes,andthereafterentersintotheupperheadersthroughrisers.Themixtureofwaterandsteamismixedintheheadersandflowsintothedrumthroughconnectingpipes.Waterandsteamisseparatedbytheseparatorsinthedrum.Thewatercirculationiscompletedinsuchamanner.

1.8Superheatedsteamflowisdividedinto6stages:

fromsteamcooledroof→steamcooledwall→PSHtubes→paneldivisionSH→platenSH→finalSH.Theinletandoutletheadersforeachstageofheatingsurfaceareconnectedwithlargecaliberpipelines.

1.9Reheatedsteamflowisdividedinto3stages:

fromwallreheater→medium-temperaturereheater→finalreheater.Wallreheateroutletheadersandmedium-temperaturereheaterinletheadersareconnectedwithlargecaliberpipelines,whilemedium-temperaturereheateroutletheadersandfinalreheaterinletheadersareconnectedwithsmallcaliberpipelines.

1.10Thetemperatureofsuperheatedsteamisadjustedbyspraywater,whilethetemperatureadjustmentofreheatedsteamisrealizedbyacombinationofburnernozzleswingingandspraywater.

1.11Burnersarelocatedatthefourcornersoffurnace.Burnernozzlescanswing.

1.12Thisboilermayadoptconstantpressure──slidingpressure──constantpressureoperationmanner.

1.13Millingsystemcontainssixmediumspeedpulverizers,amongwhichfourpulverizersareputintooperation,whiletherestonesarestandbywhenfiringthedesigncoal;

fivepulverizersareputintooperation,whiletherestoneisstandbywhenfiringthecheckcoal.ThesepulverizersareZGM123Ntypecoldprimaryairdirectmillingdevices.

1.14Ashremovaldeviceislocatedunderfurnaceashhopper.Thelowerpartofashhopperisconnectedwiththeupperpartofashremovaldevice.Suchdevicesascoolingwell,catcherandsubsequentequipmentarenotinthescopeofDBC’ssupply.

1.15Continuousandperiodicblowdownpipelinesandvalvesareadoptedinthewatersystem.Thefurnace,coilpressurepartsandairpreheaterareequippedwithsootblowerstoremoveaccumulatedash.

1.16Thedrumistheheaviestpartofboiler.Itstotallengthisabout22250mm;

itswallthicknessis145mm;

itsinnerdiameteris1792mm.Thetotalweightofthedrumnotincludingdruminternalsisabout152t.ThematerialfordrumhangerisSA-675Gr70,andthematerialfordrumis13MnNiMo54（BHW35）.

2.0ErectionTechnicalDocuments

2.1ErectiontechnicaldocumentstobesuppliedbyDBCconsistoftwokinds:

oneisthedrawingsandtechnicaldocumentsdirectlysuppliedbyDBC,theotheristheproductdescriptionsandtechnicaldocumentsprovidedtogetherwiththegoodsbythemanufacturerorsupplierfromwhomtheproductsarepurchasedbyDBC.

2.2CatalogueofdrawingsanddocumentsdirectlysuppliedbyDBCisinaccordancewithGeneralPartsListofBoiler78M-MX,andthedrawingsanddocumentsforboiler#1and#2aredistinguishedbyusingMX1,MX2andtheirjobnumber.GeneralPartsListofBoiler78M-MXincludestwoitemssuchas“BoilerProper”and“CatalogueofDataforothermanufacturersorsuppliers”.Thetechnicaldocumentsin“BoilerProper”shallbetotallysupplied.Thetechnicaldocumentsin“CatalogueofDataforothermanufacturersorsuppliers”,ifmarkedwith√inthecolumn“toBeProvidedforClient”,shallalsobesuppliedexceptthedocumentsincludedin“BoilerProper”.

2.3ThetechnicaldocumentsofeachpartshallbeinaccordancewithitsrelativeDrawingList.Ifthecolumn“ErectionDrawing“intheDrawingListismarkedwith√,theerectiondrawingshallbeprovided.

2.4Thetechnicaldocumentsofpurchasedpartsshallbeenclosedinthepackingcasesanddeliveredtothesitewiththeseparts.

3.0ErectionPreparation

3.1GeneralRequirements

3.1.1Theerectingsectionmustbewellpreparedpriortoerectiontogetfamiliarwiththeerectionequipmentandtechnicaldocumentsandconfirmthattheequipmentanddocumentshavenodefectormistake.

3.12AnydiscrepancybetweenthedocumentsofDBCandthedocumentsofDesignInstituteorbetweenthedocumentsandtheircorrespondingequipmentfoundduringerectionpreparationshallbereportedtoDBCintimesothatitcanbesettledassoonaspossible.

3.2TechnicalPreparation

3.2.1DBCshallprovidetechnicaldocumentsaccordingtotheContract,GeneralPartsListofBoilerandDrawingList,baseduponwhichtheClientmaycheckthestatusofdocumentdeliveryandfeedthereceiptbacktoDBC.

3.2.2ThedocumentsdeliveredtogetherwithequipmentshallbecheckedandfiledbytheSiteDocumentationManagementintime.ForDocumentslistofsomepurchasedfacilities,pleaserefertoBoilerManual（78M-SM）.

3.2.3Duringerectiontechnicalpreparation,theerectingsectionshallpayspecialattentiontothefollowingitems:

1）Priortoboilererection,theerectingsectionmustgetfamiliarwithalltherequirementsoferectiondrawings,instructions,documents,etc,.inordertohavegoodknowledgeofdesignpurposeandtechnicalrequirementssothatreasonableerectionprogramcanbeworkedout.Besides,theerectingsectionshallrefertothedrawingsofDesignInstitutetofindoutanydiscrepancybetweenthedrawingsofDBCandthedrawingofDesignInstituteasearlyaspossible.

2）TheerectingsectionshallhavegoodknowledgeofthedivisionofdesignbetweenDBCandDesignInstituteandtheinterfacesbetweentheequipmentselectedbyDesignInstituteandtheequipmentsuppliedbyDBC.

3）DesignChangeNoticeshalldescribethefinalstatusofequipmentdelivered.Theerectingsectionshallcheckthedesignchange,materialsubstitution,packagechange,etc.describedinDesignChangeNoticeonebyoneincombinationwiththecorrespondingequipmenttoavoidanyomissionormistakeduringerection.Whenestablishingtheerectionprogram,moreattentionshallbepaidtocrosserectionofequipmenttoavoidtheoccurrenceofexcessiveerectiondifficulty.

4）Th