《水电站技术供水系统规范》（NBT10792-2021）英文版征求意见稿.docx

ICS 27.140P 59NBENERGYSECTORSTANDARDOFTHEPEOPLE9SREPUBLICOFCHINA中华人民共和国能源行业标准NB/T10792-2021CodeforCoolingWaterSupplySystemsofHydropowerStations水电站技术供水系统规范IssuedonNovember16,2021ImplementedonMay16,2022ENERGYSECTORSTANDARDOFTHEPEOPLE9SREPUBLICOFCHINA中华人民共和国能源行业标准CodeforCoolingWaterSupplySystemsofHydropowerStations水电站技术供水系统规范NB/T10792-2021ChiefDevelopment:ChinaRenewableEnergyEngineeringInstituteApprovalDevelopment:NationalEnergyAdministrationofthePeople'sRepublicofChinaImplementationDate:May16,2022ChinaWater&PowerPressBeijing202xIntroductionThisEnglishversionisoneofChina,senergysectorstandardseriesinEnglish.ItstranslationwasorganizedbyChinaRenewableEnergyEngineeringInstituteauthorizedbyNationalEnergyAdministrationofthePeople,sRepublicofChinaincompliancewithrelevantproceduresandstipulations.ThisEnglishversionwasissuedbyNationalEnergyAdministrationofthePeople,sRepublicofChinainAnnouncement202xNo.xxdatedxxxx,202x.ThisversionwastranslatedfromtheChineseStandardNB/T10792-2021,CodeforCoolingWaterSupplySystemsofHydropowerStations,publishedbyChinaWater&PowerPress.ThecopyrightisreservedbyNationalEnergyAdministrationofthePeople'sRepublicofChina.Intheeventofanydiscrepancyintheimplementation,theChineseversionshallprevail.Manythanksgotothestafffromrelevantstandarddevelopmentorganizationsandthosewhohaveprovidedgenerousassistanceinthetranslationandreviewprocess.ForfurtherimprovementoftheEnglishversion,anycommentsandsuggestionsarewelcomeandshouldbeaddressedto:ChinaRenewableEnergyEngineeringInstituteNo.2Beixiaqjie,Liupukang,XichengDistrict,Beijing100120,ChinaWebsite:Translatingorganization:POWERCHINAKunmingEngineeringCorporationLimitedTranslatingstaff:Reviewpanelmembers:翻译出版说明本译本为国家能源局委托水电水利规划设计总院按照有关程序和规定，统一组织翻译的能源行业标准英文版系列译本之一。202x年X月X日，国家能源局以202x年第X号公告予以公布。本译本是根据中国水利水电出版社出版的水电站技术供水系统规范NB/T107922021翻译的，著作权归国家能源局所有。在使用过程中，如出现异议，以中文版为准。本译本在翻译和审核过程中，本标准编制单位及编制组有关成员给予了积极协助。为不断提高本译本的质量，欢迎使用者提出意见和建议，并反馈给水电水利规划设计总院。地址：北京市西城区六铺炕北小街2号邮编：100120网址：本译本翻译单位：中国电建集团昆明勘测设计研究院有限公司本译本翻译人员：本译本审核人员：国家能源局AnnouncementofNationalEnergyAdministrationofthePeople,sRepublicofChina2021No.5InAccordancewithStandardizationLawofthePeople'sRepublicofChinaandMeasuresfortheAdministrationofEnergyStandardization,NationalEnergyAdministrationofthePeople'sRepublicofChinahasapprovedandissued326energysectorstandardsincludingDesignmethodofboreholestructureofgeothermalwell(Attachment1),theforeignlanguageversionof19energysectorstandardsincludingCodeforSeismicDesignofHydraulicStructuresofHydropowerProject(Attachment2),andtheamendmentnoticeof3energysectorstandardsincludingCodeforSeismicDesignofHydraulicStructuresofHydropowerProject(Attachment3).Attachment:1.DirectoryofSectorStandards2. DirectoryofForeignLanguageVersionofSectorStandards3. DirectoryofAmendmentNoticeofSectorStandardsNationalEnergyAdministrationofthePeople,sRepublicofChinaNovember16,2021AttachmentI：DirectoryofSectorStandardsSerialnumberStandardNo.TitleReplacedstandardNo.AdoptedinternationalstandardNo.ApprovaldateImplementationdate97NB"10792-2021CodeforCoolingWaterSupplySystemsofHydropowerStations2021-11-162022-05-16ForewordAccordingtotherequirementofDocumentGNKJ2017No.52issuedbyNationalEnergyAdministrationofthePeople'sRepublicofChina,4tNoticeonReleasingtheDevelopmentandRevisionPlanofEnergySectorStandardsin2017,andafterextensiveinvestigationandresearch,summarizationofpracticalexperience,andwidesolicitationofopinions,thedraftinggrouphaspreparedthiscode.Thismaintechnicalcontentsofthiscodeinclude:generalprovisions,terms,designofcoolingwatersupplysystem,configurationofcoolingwatersupplysystemequipment,arrangementofcoolingwatersupplysystem,testingandacceptanceofcoolingwatersupplysystem.NationalEnergyAdministrationofthePeople'sRepublicofChinaisinchargeoftheadministrationofthiscode.ChinaRenewableEnergyEngineeringInstituteisresponsibleforitsroutinemanagement.EnergySectorStandardizationTechnicalCommitteeonHydropowerHydraulicMachinery(NEATC20)isresponsiblefortheexplanationofspecifictechnicalcontents.Commentsandsuggestionsintheimplementationofthiscodeshouldbeaddressedto:ChinaRenewableEnergyEngineeringInstituteNo.2Beixiaojie,Liupukang,XichengDistrict,Beijing100120,ChinaChiefdevelopmentorganizations:POWERCHINAKunmingEngineeringCorporationLimitedParticipatingdevelopmentorganizations:ChinaThreeGorgesConstructionEngineeringCorporationPOWERCHINAChengduEngineeringCorporationLimitedChiefdraftingstaff:YAOJianguoZOUMaojuanLlUGongmeiWUSaiboZHANGHuiZHAOMingshengPANXuemeiWANGShenghuaMAXuemeiHEPengpengZHAOXianYUANXuanWUBaijieDENGHaifengReviewpanelmembers:DAIKangjunZENGZhenlingHANLingliYOUChaoXUYiqunGOUDongmingZHOUZhenzhongZHANGHaoshengJIANGDengyunSUNWenbinCHENXiangdongCHENShunyiYUANLianJunZHANGQiangFUGuofengWANGJianhuaHEWencaiYUELeiContents1 GeneralProvisions12 Terms23 DesignofCoolingWaterSupplySystem44 ConflgurationofCoolingWaterSupplySystemEquipment104.1 PumpingEquipment104.2 PressureReducingandReliefEquipment124.3 HeatExchangeEquipment164.4 WaterFiltrationEquipment184.5 Piping,ValvesandAccessories204.6 AutomationandControlComponents224.7 Marking,Packaging,TransportationandStorage245 ArrangementofCoolingWaterSupplySystem266 TestingandAcceptanceofCoolingWaterSupplySystem306.1 TestandAcceptanceItems306.2 TestStandards,MethodsandMeans306.3 TestandAcceptanceResults31ExplanationofWordinginThisCode331.istofQuotedStandards341 GeneralProvisions1.0.1Thiscodeisformulatedtostandardizethedesign,equipmentconfiguration,arrangement,testandacceptanceofcoolingwatersupplysystemofhydropowerstations,andtoensurethesafetyandreliability,economyandrationalityofthecoolingwatersupplysystemofhydropowerstations.1.0.2Thiscodeisapplicabletothecoolingwatersupplysystemofnew,reconstructedandexpandedhydropowerstations.1.0.3Inadditiontothiscode,thecoolingwatersupplysystemofhydropowerstationsshallalsocomplywiththecurrentrelevantstandardsofChina.2 Terms2.0.1coolingwatersupplysystemsystemwhichprovidecooling,lubricatingandoperatingwaterfortheoperationofelectro-mechanicalequipmentinhydropowerstations2.0.2watersupplybypumpwatersupplymodeinwhichthewaterpressureandwaterquantityofthewatersupplysystemareguaranteedbythewaterpump2.0.3watersupplybygravitywatersupplymodeinwhichthewaterpressureandwaterquantityofthewatersupplysystemareguaranteedbythenaturalheadfromthewatersourcetotheoutlet.2.0.4watersupplybygravitywithpressurereducingdeviceonemodeofwatersupplybygravityinwhichthewaterpressureandwaterquantityofthewatersupplysystemareguaranteedbyinstallingpressurereducingdevice.2.0.5watersupplyfromheadcoverwatersupplymodeinwhichtheclearanceleakagewaterbetweentherunneruppercrownandtheheadcoveroftheFrancisturbineisusedascoolingwateroftheunit2.0.6secondarycirculationwatersupplywatersupplymodeofcoolingequipmentthroughtwocoldandheatexchangesinthewatersupplycircuit2.0.7compositewatersupplywatersupplymodecombiningtwoormorewatersupplymodesisadopted2.0.8unitwatersupplywatersupplymodeofeachunitforitsownsystemoperation2.0.9centralizedwatersupplywatersupplymodeinwhichthewateristakenfromtwoormorecommonwaterintakesandwatersupplyequipment,andsuppliedtoeachwaterequipmentthroughthecommonpoolormainpipe3 DesignofCoolingWaterSupplySystem3.0.1Thedesignofcoolingwatersupplysystemofhydropowerstationshallincludethefollowingcontents:1 Providecoolingandlubricatingwaterforhydro-generatorunit/pumped-storageunitanditsauxiliaryequipment.2 Providecoolingwaterforelectricalequipment.3 Providecoolingandlubricatingwaterforauxiliarymechanicalequipment.4 Providecoolingwaterforotherequipment.3.0.2Thecoolingwatersupplysystemshallmainlyincludewatersource,waterfiltrationequipment,pipenetwork,valves,automaticcomponentsandprotectiondevices.Whenthewatersupplymodebypumpisadopted,thesystemcompositionshallalsoincludewatersupplypump.Whenthesecondarycirculatingwatersupplymodeisadopted,thesystemcompositionshallalsoincludeheatexchangeequipment.3.0.3Whenthefirefightingwateristakenfromcoolingwatersupplysystem,thedesignofcoolingwatersupplysystemshallmeettherequirementoffirefightingwaterconsumption.3.0.4Thecoolingwatersourceshallbereasonablyselectedaccordingtotherequirementsofwater-usedequipmentforwaterconsumption,waterpressure,watertemperatureandwaterquality,andincombinationwiththespecificconditionsofthehydropowerstation,suchasthelocation,terrain,waterlevelandoperatingconditions.Theselectionofwatersourceshallmeetthefollowingrequirements:1 Thecoolingwatersupplysystemshallhavereliablemainwatersource.Inadditiontothemainwatersource,thereshouldbereliablestandbywatersourceorstandbywaterpath.Themainwatersourceandstandbywatersourceshouldbeswitchedautomaticallythroughwaterpumps,electricvalves,etc.2 Thecoolingwatersupplysystemshallmeettherequirementsofequipmentwaterconsumption.Beforethedataprovidedbytheequipmentmanufacturer,thewaterconsumptionmaybeinitiallydeterminedreferredtothetheequipmentwithsimilarheadandcapacitythathasbeenputintooperation,orpreliminaryestimatedaccordingtotheempiricalformulasorstatisticalcurves.Aftertheequipmentisordered,thewaterconsumptionshallbedeterminedaccordingtotheequipmentmanufacturers,requirements.3 Thewaterpressureofcoolingwatersupplysystemshallbedeterminedcomprehensivelyaccordingtothehydraulicpressuredropofthecoolers,thehydraulicpressuredropofthepipelinesystemandthewaterpressureattheoutletofpipeline.Themaximumworkingpressureattheinletofaircoolerandbearingcoolershallbedeterminedaccordingtotheactualdesignconditions.Themaximumworkingpressureofhydro-generatorunitshouldnotexceed0.6MPa,andthatofpumped-storageunitshouldnotexceed2.5MPa.4 Whenthereareaquaticorganismsinwatersourcethataffectthereliabilityofwatersupply,correspondingmeasuresshallbetaken.5 .0.5Thestandbywatersourceofcoolingwatersupplysystemmayadoptthefollowingforms:1 Whentheunitwatersupplymodeisadopted,thecontactpipemaybesetupformutualstandby.2 Whenthepowerhouseisclosetothereservoir,thewaterinfrontofthedammaybetakenasstandby.3 Whenthemodeofwatersupplyfromheadcoverisadopted,thetailwaterintakebywaterpump,thewatersupplyofintermediatepool,andthewatersupplybygravitywithpressurereducingdevicemaybeusedasstandby.1.1 .6Theinletwatertemperatureoftheaircoolersandbearingcoolersofhydro-generatorunit/pumped-storageunit,andthecoolersofwater-cooledtransformershouldbedesignas28.Whenthetemperatureofactualwatersourceexceeds28,theinletwatertemperatureshallbedeterminedaccordingtotheactualmaximumwatersourcetemperature.Whenthemaximumtemperatureofwatersourceislowerthan20alltheyearround,theinletwatertemperatureshouldbedesignedas20.1.2 .7Thefollowingwatersupplymodesmaybeselectedascoolingwatersupplyschemeandshallbedeterminedthroughtechno-economiccomparison:1 Watersupplybypump.2 Watersupplybygravity.3 Watersupplybygravitywithpressurereducingdevice.4 Watersupplybypumpplusintermediatewaterpool.5 Watersupplybygravityplusintermediatewaterpool.6 Watersupplyfromheadcover.7 Secondarycirculatingwatersupply.8 Compositewatersupply.3.0.8Whentheworkingheadofhydropowerstationis15mto60m,themodeofwatersupplybygravityshouldbeadopted.Whentheworkingheadis50mto160m,themodeofwatersupplybygravitywithpressurereducingdeviceshouldbeadopted.Whentheworkingheadislessthan15mormorethan160m,themodeofwatersupplybypumpshouldbeadopted.Whenotherwatersupplymodesareselected,techno-economiccomparisonshallbemade.3.0.9WhenthewaterpressureandwaterflowofheadcoverpressurereliefpipeofFrancisturbinemeettherequirementsofunitcoolingwatersupply,themodeofwatersupplyfromheadcovermaybeadopted.3.0.10Whenthewaterqualityofpowerstationispoorortheequipmentrequirementsarehigh,themodeofsecondarycirculatingwatersupplymaybeadopted.3.0.11Iftheheadofpowerstationvarieswidely,andthesinglewatersupplymodecannotmeetthewaterpressureandwatervolumerequirementsorisuneconomical,thecompositewatersupplymodemaybeused.3.0.12Incaseoneofthefollowingconditions,themodeofwatersupplyfromintermediatepoolmaybeusedaftertechno-economicdemonstration:1 Thewaterlevelofreservoirchangesgreatly,anditisdifficulttoobtainstablewaterpressure.2 Ifsedimentconcentrationinwateristoohighandsedimentationtreatmentisrequired,thesedimentationbasinmayalsobeusedasintermediatepool.3.0.13Whenthemodeofwatersupplyfromintermediatepoolisselectedforcoolingwatersupplysystem,thecentralizedwatersupplysystemmaybeused.3.0.14Theintermediatepoolshallbeequippedwithdrainpipe,drainvalveandoverflowchannel,andanti-freezingmeasuresshallalsobeprovidedincoldareas.Theeffectivevolumeofintermediatepoolshallensurecontinuouswatersupplyforatleast15minutes.Ifitisalsousedasfirefightingwaterpool,itshallalsomeettherequirementsoffirefightingwaterconsumption.3.0.15Thesystemofwatersupplybypumpshallmeetthefollowingrequirements:1 Thewatersupplybypumpshouldbeunitwatersupplysystem,andeachunitshouldbeequippedwithoneservicepumpandonestandbypump.2 Whenthecentralizedwatersupplysystemisadopted,thenumberofservicepumpsshouldbeintegralmultipleofthenumberofunits,andthenumberofstandbywaterpumpsmaybe1/3to1/2ofthenumberofservicepumps,butshallnotbelessthan1.3 .0.16Forthepowerstationinsediment-ladenrivers,thecoolingwatersupplysystemshouldhavethefunctionofpositiveandnegativewatersupplyexceptforthesecondarycirculationcoolingwatersupplysystem.4 .0.17Thewatersupplyofmainshaftsealshallmeetthefollowingrequirements:1 Thewatersupplyofmainshaftsealshallhavereliablemainwatersourceandstandbywatersource.2 Thecoolingwatersupplyandmainshaftsealwatersupplyofshouldformonewatersupplysystem.3 Ifthewaterqualityofwatersupplysystemcannotmeetthewaterqualityrequirementsofmainshaftseal,waterfiltrationequipmentshouldbeequippedforthemainshaftseal.3.0.18Thewaterpumps,pipenetworkandvalvesshallmeetthefollowingrequirements:1 Itshallbeensuredtomeettherequirementsoftotalwaterconsumptionandwaterpressureofallequipmentwithintherangeofvariousoperatingheads,tailwaterlevelandtailwaterpressure.2 Thelayoutofcoolingwatersupplynetworkandtheconfigurationofvalvesshallensurethattheflowdistributionofeachbranchpipelinemeetstherequirementsofthesystemdesign,andthepressuredistributionofeachpipelinenodeshallbereasonable.3.0.19Forthewatersupplysystemtakingwaterfromthespiralcase,penstockorlongdrafttube(tunnel),theinfluenceofpressureriseontheequipmentduringthetransientprocessofunitshallbeconsidered.3.0.20Whenthewatersourceofpumpistakenfromthetailwater,airshallbepreventedfromenteringthewatersupplypipeline.3.0.21Whenthewaterintakeofpumpandthedrainageoutletarearrangedonthesamechannel,thedistancebetweenthewaterintakeandthedrainageoutletshallpreventfromthermalshortcircuit.3.0.22Theoutletelevationofwatersupplysystemincoldareasshouldbebelowthemaximumpossibleicethicknessorotheranti-freezingmeasuresshouldbetaken.3.0.23Thecoolingwatersupplysystemofunitshallbeabletorealizetherequirementsofautomaticinputandautomaticexitwhen