【英文标准名称】:Hydraulicturbines,storagepumpsandpump-turbines-Caviatationpittingevaltuation-Evalutioninreactionturbines,storagepumpsandpumps-turbines
【原文标准名称】:水轮机,蓄能泵和水泵水轮机.气蚀损坏的评定.反击式水轮机,蓄能泵和水泵水轮机的评定
【标准号】:BSEN60609-1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-02-10
【实施或试行日期】:2005-02-10
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:气蚀;定义;定义(术语);电气工程;评估;水压机;冲击式涡轮机;水泵水轮机;泵;蓄水泵;测试;涡轮机;水轮机
【英文主题词】:Cavitationcorrosion;Definition;Definitions;Electricalengineering;Evaluations;Hydraulicmachines;Impulseturbines;Pumpturbines;Pumps;Storagepumps;Testing;Turbines;Waterturbines
【摘要】:ThispartofIEC60609servesasabasisfortheformulationofguaranteesappliedtocavitationpittingforreactionhydraulicturbines,storagepumpsandpump-turbines.Itaddressesthemeasurementandevaluationoftheamountofcavitationpittingoncertainspecifiedmachinecomponentsforgivenconditions,whicharedefinedinthecontractbyoutput,specifichydraulicenergy(E),speed,material,operation,etc.Thecavitation-pittingevaluationisbasedonthelossofmaterialduringagiventimeandunderaccuratelydefinedoperatingconditions.Allwettedsurfacesareconsidered.Thecontractdocumentsshallstatewhethercavitationpittingonthehydraulicmachineshouldorshouldnotbeanticipatedinallorinsomeoperatingranges.Guaranteesthatrestricttheextentofcavitationpittingarenecessaryinthecontractwhethercavitationpittingisanticipatedornot.1ExcludedtopicsandlimitationsThisstandarddoesnotcoverothereffectswhichcavitationmaypossiblyhaveonthemachinesuchas:-output,efficiency,vibration,mechanicalintegrity,andnoise;and-materialdefectsrevealedduringoperation.Materialdefectsrevealedbywearonthemachinesurfacesduringoperationarenotincludedinaguaranteeagainstcavitationpitting.2ConsiderationsconcerningchemicalcompositionofwaterItisassumedinthisstandardthatthewaterisnotchemicallyaggressive.Incaseswherethewaterisconsideredtobechemicallyaggressive,thecavitation-pittingguaranteeshallbegivenonthebasisofanagreedwateranalysis.Sincechemicalaggressivenessisdependentuponsomanypossiblechemicalcompositions,andthematerialsofthemachine,itisbeyondthescopeofthisstandardtosetparticularlimits.Ifitbecomesapparentinthecourseoflateranalysisthatthewaterisinfactmoreaggressivethantheagreedanalysisindicated,thismustbetakenintoconsiderationwhenevaluatingwhetherthecavitation-pittingguaranteeshavebeenmet.Ifcavitationpittingoccursinzoneswheredamagecanbeseparatelyattributabletochemicalorelectrochemicalcorrosion,suchdamageshallbeexcludedfromtheevaluationofcavitationpitting.Ifcavitationpittingoccursinzoneswheredamagecanbeproventohavebeenincreasedbychemicalorelectrochemicaleffectsadditionaltothosenormaltocavitationinwateroftheagreedanalysis,thensuchzonesshallbeexcludedfromtheevaluationofcavitationpitting.3ConsiderationsconcerningwatercontainingsolidsAbrasionduetowatercontaminatedwithsolids(forexample,sand)cannotbeconsideredascavitation-pittingdamage.Whenamachineoperatesinwatercontainingasignificantamountofsolids,theweightlossofmaterialwillbeintensifiedduetothejointactionofbothcavitationpitting(ifitexists)andabrasion.Thedegreeofintensifyingdestructiondependsonvariousaspects,suchassedimentconcentration,mineralcomposition,sizegradationandimpactparameters(i.e.relativevelocityandincidenceangle)aswellasthematerialcharacteristicsandhydraulicmachineoperationconditions.Whenasurfaceisalteredbyabrasionerosion,cavitation-pittingdamagecanbeinitiatedandacceleratedbecauseofthehydraulicshapechange.Withrespecttomeasurementofdamage,itisimportanttorealizethat,forcavitationerosiondamageandabrasionerosiondamage,theappearance,positionandmechanismofdestructionisnotsimilar.Ifcavitationpittingoccursinzoneswheredamagecanbeseparatelyattributedtoabrasion,suchdamageshallbeexcludedfromtheevaluationofcavitationpitting.Whiletheexamplesofamountsofcavitationpittingandmeasurementmethodsgiveninthisstandardcovercavitation-pittingdamageonly,itmustberecognizedthatsomehydrositesoperateinwaterthatcontainssignificantamountsofsolidsforatleastsomeportionoftheyear.Sinceerosionduetoabrasionissodependento
【中国标准分类号】:J71
【国际标准分类号】:23_080;27_140
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:Geographicinformation-Qualityevaluationprocedures;TechnicalCorrigendum1
【原文标准名称】:地理信息.质量评定程序.技术勘误1
【标准号】:ISO19114TechnicalCorrigendum1-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC211
【标准类型】:()
【标准水平】:()
【中文主题词】:地理学;数据;数据传送;传播学;质量保证;信息;数据交换;精密度;评定;规范(验收);地理信息学;传播技术;数据表示;数据处理;信息交流;大地测量学;通信系统;地理的;质量;地理信息;信息处理;地质学;信息技术;大地构造学;质量评定;数据处理系统;数据描述;数据记录;准确度
【英文主题词】:Accuracy;Communication;Communicationsystems;Communicationtechnology;Data;Datadescription;Dataexchange;Dataprocessing;Dataprocessingsystem;Datarecords;Datarepresentation;Datatransfer;Evaluations;Geodesy;Geographicinformation;Geographical;Geography;Geology;Geomatics;Geotechnics;Information;Informationexchange;Informationprocessing;Informationtechnology;Precision;Quality;Qualityassessment;Qualityassurance;Specification(approval)
【摘要】:ThisstandardisGeographicinformation-QualityevaluationproceduresTechnicalCorrigendum1
【中国标准分类号】:A76
【国际标准分类号】:35_240_70
【页数】:2P;A4
【正文语种】:英语