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1、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CodeforCoolingWaterSupplySystemsofHydro
2、powerStations水电站技术供水系统规范NB/T10792-2021ChiefDevelopment:ChinaRenewableEnergyEngineeringInstituteApprovalDevelopment:NationalEnergyAdministrationofthePeoplesRepublicofChinaImplementationDate:May16,2022ChinaWater&PowerPressBeijing202xIntroductionThisEnglishversionisoneofChina,senergysectorstandardserie
3、sinEnglish.ItstranslationwasorganizedbyChinaRenewableEnergyEngineeringInstituteauthorizedbyNationalEnergyAdministrationofthePeople,sRepublicofChinaincompliancewithrelevantproceduresandstipulations.ThisEnglishversionwasissuedbyNationalEnergyAdministrationofthePeople,sRepublicofChinainAnnouncement202x
4、No.xxdatedxxxx,202x.ThisversionwastranslatedfromtheChineseStandardNB/T10792-2021,CodeforCoolingWaterSupplySystemsofHydropowerStations,publishedbyChinaWater&PowerPress.ThecopyrightisreservedbyNationalEnergyAdministrationofthePeoplesRepublicofChina.Intheeventofanydiscrepancyintheimplementation,theChin
5、eseversionshallprevail.Manythanksgotothestafffromrelevantstandarddevelopmentorganizationsandthosewhohaveprovidedgenerousassistanceinthetranslationandreviewprocess.ForfurtherimprovementoftheEnglishversion,anycommentsandsuggestionsarewelcomeandshouldbeaddressedto:ChinaRenewableEnergyEngineeringInstitu
6、teNo.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/T
7、107922021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.5InAccordancewithStandard
8、izationLawofthePeoplesRepublicofChinaandMeasuresfortheAdministrationofEnergyStandardization,NationalEnergyAdministrationofthePeoplesRepublicofChinahasapprovedandissued326energysectorstandardsincludingDesignmethodofboreholestructureofgeothermalwell(Attachment1),theforeignlanguageversionof19energysect
9、orstandardsincludingCodeforSeismicDesignofHydraulicStructuresofHydropowerProject(Attachment2),andtheamendmentnoticeof3energysectorstandardsincludingCodeforSeismicDesignofHydraulicStructuresofHydropowerProject(Attachment3).Attachment:1.DirectoryofSectorStandards2. DirectoryofForeignLanguageVersionofS
10、ectorStandards3. DirectoryofAmendmentNoticeofSectorStandardsNationalEnergyAdministrationofthePeople,sRepublicofChinaNovember16,2021AttachmentI：DirectoryofSectorStandardsSerialnumberStandardNo.TitleReplacedstandardNo.AdoptedinternationalstandardNo.ApprovaldateImplementationdate97NB10792-2021CodeforCo
11、olingWaterSupplySystemsofHydropowerStations2021-11-162022-05-16ForewordAccordingtotherequirementofDocumentGNKJ2017No.52issuedbyNationalEnergyAdministrationofthePeoplesRepublicofChina,4tNoticeonReleasingtheDevelopmentandRevisionPlanofEnergySectorStandardsin2017,andafterextensiveinvestigationandresear
12、ch,summarizationofpracticalexperience,andwidesolicitationofopinions,thedraftinggrouphaspreparedthiscode.Thismaintechnicalcontentsofthiscodeinclude:generalprovisions,terms,designofcoolingwatersupplysystem,configurationofcoolingwatersupplysystemequipment,arrangementofcoolingwatersupplysystem,testingan
13、dacceptanceofcoolingwatersupplysystem.NationalEnergyAdministrationofthePeoplesRepublicofChinaisinchargeoftheadministrationofthiscode.ChinaRenewableEnergyEngineeringInstituteisresponsibleforitsroutinemanagement.EnergySectorStandardizationTechnicalCommitteeonHydropowerHydraulicMachinery(NEATC20)isresp
14、onsiblefortheexplanationofspecifictechnicalcontents.Commentsandsuggestionsintheimplementationofthiscodeshouldbeaddressedto:ChinaRenewableEnergyEngineeringInstituteNo.2Beixiaojie,Liupukang,XichengDistrict,Beijing100120,ChinaChiefdevelopmentorganizations:POWERCHINAKunmingEngineeringCorporationLimitedP
15、articipatingdevelopmentorganizations:ChinaThreeGorgesConstructionEngineeringCorporationPOWERCHINAChengduEngineeringCorporationLimitedChiefdraftingstaff:YAOJianguoZOUMaojuanLlUGongmeiWUSaiboZHANGHuiZHAOMingshengPANXuemeiWANGShenghuaMAXuemeiHEPengpengZHAOXianYUANXuanWUBaijieDENGHaifengReviewpanelmembe
16、rs:DAIKangjunZENGZhenlingHANLingliYOUChaoXUYiqunGOUDongmingZHOUZhenzhongZHANGHaoshengJIANGDengyunSUNWenbinCHENXiangdongCHENShunyiYUANLianJunZHANGQiangFUGuofengWANGJianhuaHEWencaiYUELeiContents1 GeneralProvisions12 Terms23 DesignofCoolingWaterSupplySystem44 ConflgurationofCoolingWaterSupplySystemEqui
17、pment104.1 PumpingEquipment104.2 PressureReducingandReliefEquipment124.3 HeatExchangeEquipment164.4 WaterFiltrationEquipment184.5 Piping,ValvesandAccessories204.6 AutomationandControlComponents224.7 Marking,Packaging,TransportationandStorage245 ArrangementofCoolingWaterSupplySystem266 TestingandAcce
18、ptanceofCoolingWaterSupplySystem306.1 TestandAcceptanceItems306.2 TestStandards,MethodsandMeans306.3 TestandAcceptanceResults31ExplanationofWordinginThisCode331.istofQuotedStandards341 GeneralProvisions1.0.1Thiscodeisformulatedtostandardizethedesign,equipmentconfiguration,arrangement,testandacceptan
19、ceofcoolingwatersupplysystemofhydropowerstations,andtoensurethesafetyandreliability,economyandrationalityofthecoolingwatersupplysystemofhydropowerstations.1.0.2Thiscodeisapplicabletothecoolingwatersupplysystemofnew,reconstructedandexpandedhydropowerstations.1.0.3Inadditiontothiscode,thecoolingwaters
20、upplysystemofhydropowerstationsshallalsocomplywiththecurrentrelevantstandardsofChina.2 Terms2.0.1coolingwatersupplysystemsystemwhichprovidecooling,lubricatingandoperatingwaterfortheoperationofelectro-mechanicalequipmentinhydropowerstations2.0.2watersupplybypumpwatersupplymodeinwhichthewaterpressurea
21、ndwaterquantityofthewatersupplysystemareguaranteedbythewaterpump2.0.3watersupplybygravitywatersupplymodeinwhichthewaterpressureandwaterquantityofthewatersupplysystemareguaranteedbythenaturalheadfromthewatersourcetotheoutlet.2.0.4watersupplybygravitywithpressurereducingdeviceonemodeofwatersupplybygra
22、vityinwhichthewaterpressureandwaterquantityofthewatersupplysystemareguaranteedbyinstallingpressurereducingdevice.2.0.5watersupplyfromheadcoverwatersupplymodeinwhichtheclearanceleakagewaterbetweentherunneruppercrownandtheheadcoveroftheFrancisturbineisusedascoolingwateroftheunit2.0.6secondarycirculati
23、onwatersupplywatersupplymodeofcoolingequipmentthroughtwocoldandheatexchangesinthewatersupplycircuit2.0.7compositewatersupplywatersupplymodecombiningtwoormorewatersupplymodesisadopted2.0.8unitwatersupplywatersupplymodeofeachunitforitsownsystemoperation2.0.9centralizedwatersupplywatersupplymodeinwhich
24、thewateristakenfromtwoormorecommonwaterintakesandwatersupplyequipment,andsuppliedtoeachwaterequipmentthroughthecommonpoolormainpipe3 DesignofCoolingWaterSupplySystem3.0.1Thedesignofcoolingwatersupplysystemofhydropowerstationshallincludethefollowingcontents:1 Providecoolingandlubricatingwaterforhydro
25、-generatorunit/pumped-storageunitanditsauxiliaryequipment.2 Providecoolingwaterforelectricalequipment.3 Providecoolingandlubricatingwaterforauxiliarymechanicalequipment.4 Providecoolingwaterforotherequipment.3.0.2Thecoolingwatersupplysystemshallmainlyincludewatersource,waterfiltrationequipment,pipen
26、etwork,valves,automaticcomponentsandprotectiondevices.Whenthewatersupplymodebypumpisadopted,thesystemcompositionshallalsoincludewatersupplypump.Whenthesecondarycirculatingwatersupplymodeisadopted,thesystemcompositionshallalsoincludeheatexchangeequipment.3.0.3Whenthefirefightingwateristakenfromcoolin
27、gwatersupplysystem,thedesignofcoolingwatersupplysystemshallmeettherequirementoffirefightingwaterconsumption.3.0.4Thecoolingwatersourceshallbereasonablyselectedaccordingtotherequirementsofwater-usedequipmentforwaterconsumption,waterpressure,watertemperatureandwaterquality,andincombinationwiththespeci
28、ficconditionsofthehydropowerstation,suchasthelocation,terrain,waterlevelandoperatingconditions.Theselectionofwatersourceshallmeetthefollowingrequirements:1 Thecoolingwatersupplysystemshallhavereliablemainwatersource.Inadditiontothemainwatersource,thereshouldbereliablestandbywatersourceorstandbywater
29、path.Themainwatersourceandstandbywatersourceshouldbeswitchedautomaticallythroughwaterpumps,electricvalves,etc.2 Thecoolingwatersupplysystemshallmeettherequirementsofequipmentwaterconsumption.Beforethedataprovidedbytheequipmentmanufacturer,thewaterconsumptionmaybeinitiallydeterminedreferredtothetheeq
30、uipmentwithsimilarheadandcapacitythathasbeenputintooperation,orpreliminaryestimatedaccordingtotheempiricalformulasorstatisticalcurves.Aftertheequipmentisordered,thewaterconsumptionshallbedeterminedaccordingtotheequipmentmanufacturers,requirements.3 Thewaterpressureofcoolingwatersupplysystemshallbede
31、terminedcomprehensivelyaccordingtothehydraulicpressuredropofthecoolers,thehydraulicpressuredropofthepipelinesystemandthewaterpressureattheoutletofpipeline.Themaximumworkingpressureattheinletofaircoolerandbearingcoolershallbedeterminedaccordingtotheactualdesignconditions.Themaximumworkingpressureofhy
32、dro-generatorunitshouldnotexceed0.6MPa,andthatofpumped-storageunitshouldnotexceed2.5MPa.4 Whenthereareaquaticorganismsinwatersourcethataffectthereliabilityofwatersupply,correspondingmeasuresshallbetaken.5 .0.5Thestandbywatersourceofcoolingwatersupplysystemmayadoptthefollowingforms:1 Whentheunitwater
33、supplymodeisadopted,thecontactpipemaybesetupformutualstandby.2 Whenthepowerhouseisclosetothereservoir,thewaterinfrontofthedammaybetakenasstandby.3 Whenthemodeofwatersupplyfromheadcoverisadopted,thetailwaterintakebywaterpump,thewatersupplyofintermediatepool,andthewatersupplybygravitywithpressurereduc
34、ingdevicemaybeusedasstandby.1.1 .6Theinletwatertemperatureoftheaircoolersandbearingcoolersofhydro-generatorunit/pumped-storageunit,andthecoolersofwater-cooledtransformershouldbedesignas28.Whenthetemperatureofactualwatersourceexceeds28,theinletwatertemperatureshallbedeterminedaccordingtotheactualmaxi
35、mumwatersourcetemperature.Whenthemaximumtemperatureofwatersourceislowerthan20alltheyearround,theinletwatertemperatureshouldbedesignedas20.1.2 .7Thefollowingwatersupplymodesmaybeselectedascoolingwatersupplyschemeandshallbedeterminedthroughtechno-economiccomparison:1 Watersupplybypump.2 Watersupplybyg
36、ravity.3 Watersupplybygravitywithpressurereducingdevice.4 Watersupplybypumpplusintermediatewaterpool.5 Watersupplybygravityplusintermediatewaterpool.6 Watersupplyfromheadcover.7 Secondarycirculatingwatersupply.8 Compositewatersupply.3.0.8Whentheworkingheadofhydropowerstationis15mto60m,themodeofwater
37、supplybygravityshouldbeadopted.Whentheworkingheadis50mto160m,themodeofwatersupplybygravitywithpressurereducingdeviceshouldbeadopted.Whentheworkingheadislessthan15mormorethan160m,themodeofwatersupplybypumpshouldbeadopted.Whenotherwatersupplymodesareselected,techno-economiccomparisonshallbemade.3.0.9W
38、henthewaterpressureandwaterflowofheadcoverpressurereliefpipeofFrancisturbinemeettherequirementsofunitcoolingwatersupply,themodeofwatersupplyfromheadcovermaybeadopted.3.0.10Whenthewaterqualityofpowerstationispoorortheequipmentrequirementsarehigh,themodeofsecondarycirculatingwatersupplymaybeadopted.3.
39、0.11Iftheheadofpowerstationvarieswidely,andthesinglewatersupplymodecannotmeetthewaterpressureandwatervolumerequirementsorisuneconomical,thecompositewatersupplymodemaybeused.3.0.12Incaseoneofthefollowingconditions,themodeofwatersupplyfromintermediatepoolmaybeusedaftertechno-economicdemonstration:1 Th
40、ewaterlevelofreservoirchangesgreatly,anditisdifficulttoobtainstablewaterpressure.2 Ifsedimentconcentrationinwateristoohighandsedimentationtreatmentisrequired,thesedimentationbasinmayalsobeusedasintermediatepool.3.0.13Whenthemodeofwatersupplyfromintermediatepoolisselectedforcoolingwatersupplysystem,t
41、hecentralizedwatersupplysystemmaybeused.3.0.14Theintermediatepoolshallbeequippedwithdrainpipe,drainvalveandoverflowchannel,andanti-freezingmeasuresshallalsobeprovidedincoldareas.Theeffectivevolumeofintermediatepoolshallensurecontinuouswatersupplyforatleast15minutes.Ifitisalsousedasfirefightingwaterp
42、ool,itshallalsomeettherequirementsoffirefightingwaterconsumption.3.0.15Thesystemofwatersupplybypumpshallmeetthefollowingrequirements:1 Thewatersupplybypumpshouldbeunitwatersupplysystem,andeachunitshouldbeequippedwithoneservicepumpandonestandbypump.2 Whenthecentralizedwatersupplysystemisadopted,thenu
43、mberofservicepumpsshouldbeintegralmultipleofthenumberofunits,andthenumberofstandbywaterpumpsmaybe1/3to1/2ofthenumberofservicepumps,butshallnotbelessthan1.3 .0.16Forthepowerstationinsediment-ladenrivers,thecoolingwatersupplysystemshouldhavethefunctionofpositiveandnegativewatersupplyexceptforthesecond
44、arycirculationcoolingwatersupplysystem.4 .0.17Thewatersupplyofmainshaftsealshallmeetthefollowingrequirements:1 Thewatersupplyofmainshaftsealshallhavereliablemainwatersourceandstandbywatersource.2 Thecoolingwatersupplyandmainshaftsealwatersupplyofshouldformonewatersupplysystem.3 Ifthewaterqualityofwa
45、tersupplysystemcannotmeetthewaterqualityrequirementsofmainshaftseal,waterfiltrationequipmentshouldbeequippedforthemainshaftseal.3.0.18Thewaterpumps,pipenetworkandvalvesshallmeetthefollowingrequirements:1 Itshallbeensuredtomeettherequirementsoftotalwaterconsumptionandwaterpressureofallequipmentwithin
46、therangeofvariousoperatingheads,tailwaterlevelandtailwaterpressure.2 Thelayoutofcoolingwatersupplynetworkandtheconfigurationofvalvesshallensurethattheflowdistributionofeachbranchpipelinemeetstherequirementsofthesystemdesign,andthepressuredistributionofeachpipelinenodeshallbereasonable.3.0.19Forthewa
47、tersupplysystemtakingwaterfromthespiralcase,penstockorlongdrafttube(tunnel),theinfluenceofpressureriseontheequipmentduringthetransientprocessofunitshallbeconsidered.3.0.20Whenthewatersourceofpumpistakenfromthetailwater,airshallbepreventedfromenteringthewatersupplypipeline.3.0.21Whenthewaterintakeofp
48、umpandthedrainageoutletarearrangedonthesamechannel,thedistancebetweenthewaterintakeandthedrainageoutletshallpreventfromthermalshortcircuit.3.0.22Theoutletelevationofwatersupplysystemincoldareasshouldbebelowthemaximumpossibleicethicknessorotheranti-freezingmeasuresshouldbetaken.3.0.23Thecoolingwatersupplysystemofunitshallbeabletorealizetherequirementsofautomaticinputandautomaticexitwhen
