JB/T 2728.3-2008 电机用气体冷却器 第3部分:挤片式气体冷却器技术要求
时间:2024-05-21 01:41:24 来源: 标准资料网 作者:标准资料网 阅读:8741
基本信息
标准名称: | 电机用气体冷却器 第3部分:挤片式气体冷却器技术要求 |
中标分类: |
电工 >>
旋转电机 >>
旋转电机综合 |
ICS分类: |
电气工程 >>
旋转电机 >>
旋转电机部件
|
替代情况: | 替代JB/T 2728.4-1996 |
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2008-06-16 |
实施日期: | 2008-12-01 |
首发日期: | |
作废日期: | |
主管部门: | 中华人民共和国国家发展和改革委员会 |
提出单位: | 中国机械工业联合会 |
归口单位: | 全国旋转电机标准化技术委员会 |
起草单位: | 无锡华申热工流体设备厂;上海金石索泰机电设备有限公司;哈尔滨大电机研究所 |
起草人: | 王建伟、张虎、董卫龙、李广德 |
出版社: | 机械工业出版社 |
出版日期: | 2008-12-01 |
页数: | 5页 |
适用范围
本部分规定了电机用挤片式气体冷却器的技术要求。
本部分适用于各类电机用的挤片式气体冷却器。
前言
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目录
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引用标准
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所属分类: 电工 旋转电机 旋转电机综合 电气工程 旋转电机 旋转电机部件
【英文标准名称】:TestMethodForHighTemperatureUniversalOxidationTestForTurbineOils
【原文标准名称】:汽轮机油高温通用氧化试验用试验方法
【标准号】:ANSI/ASTMD6514-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:2003-05-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:氧化;测试;涡轮机油
【英文主题词】:Oxidation;Testing;Turbineoils
【摘要】:Thistestmethodcoversaprocedureforevaluatingtheoxidationofinhibitedlubricantsinthepresenceofair,copper,andironmetals.Thistestmethodwasdevelopedandisusedtoevaluatethehightemperatureoxidationstabilityanddepositformingtendencyofoilsforsteamandgasturbines.Ithasbeenusedfortestingotherlubricantsmadewithmineraloilandsyntheticbasestocksforcompressors,hydraulicpumps,andotherapplications,butthesehavenotbeenusedincooperativetesting.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.IdentifiedhazardouschemicalsarelistedinSection7.Beforeusingthistestmethod,refertosuppliers'safetylabels,MaterialSafetyDataSheetsandothertechnicalliterature.
【中国标准分类号】:E34
【国际标准分类号】:27_060_10
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforNaI(Tl)Gamma-RaySpectrometryofWater
【原文标准名称】:用NaI(TI)γ射线光谱法处理水的标准实施规程
【标准号】:ASTMD4962-2002(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:gammapulseheightanalysis;gammarayspectrometry;multichannelanalyzer;sodiumiodidedetector;Calibration--wateranalysisinstrumentation;Gammaradiation--water;Gamma-rayspectrometry;Multichannelanalyzer;Radioactivewateranalysis;Radionuclid
【摘要】:Gamma-rayspectrometryisusedtoidentifyradionuclidesandtomakequantitativemeasurements.Useofacomputerandalibraryofstandardspectrawillberequiredforquantitativeanalysisofcomplexmixturesofnuclides.Variationofthephysicalgeometryofthesampleanditsrelationshipwiththedetectorwillproducebothqualitativeandquantitativevariationsinthegamma-rayspectrum.Toadequatelyaccountforthesegeometryeffects,calibrationsaredesignedtoduplicateallconditionsincludingsource-to-detectordistance,sampleshapeandsize,andsamplematrixencounteredwhensamplesaremeasured.Thismeansthatacompletesetoflibrarystandardsmayberequiredforeachgeometryandsampletodetectordistancecombinationthatwillbeused.Sincesomespectrometrysystemsarecalibratedatmanydiscretedistancesfromthedetector,awiderangeofactivitylevelscanbemeasuredonthesamedetector.Forhigh-levelsamples,extremelylowefficiencygeometriesmaybeused.Quantitativemeasurementscanbemadeaccuratelyandpreciselywhenhighactivitylevelsamplesareplacedatdistancesof1mormorefromthedetector.Electronicproblems,suchaserroneousdeadtimecorrection,lossofresolution,andrandomsumming,maybeavoidedbykeepingthegrosscountratebelow2000countspersecondandalsokeepingthedeadtimeoftheanalyzerbelow5%.Totalcountingtimeisgovernedbytheactivityofthesample,thedetectorsourcedistance,andtheacceptablePoissoncountinguncertainty.1.1Thispracticecoversthemeasurementofradionuclidesinwaterbymeansofgamma-rayspectrometry.Itisapplicabletonuclidesemittinggamma-rayswithenergiesgreaterthan50keV.Fortypicalcountingsystemsandsampletypes,activitylevelsofabout40Bq(1080pCi)areeasilymeasuredandsensitivitiesofabout0.4Bq(11pCi)arefoundformanynuclides(1-10).Countratesinexcessof2000countspersecondshouldbeavoidedbecauseofelectroniclimitations.Highcountratesamplescanbeaccommodatedbydilutionorbyincreasingthesampletodetectordistance.1.2Thispracticecanbeusedforeitherquantitativeorrelativedeterminations.Intracerwork,theresultsmaybeexpressedbycomparisonwithaninitialconcentrationofagivennuclidewhichistakenas100%.Forradioassay,theresultsmaybeexpressedintermsofknownnuclidicstandardsfortheradionuclidesknowntobepresent.Inadditiontothequantitativemeasurementofgamma-rayactivity,gamma-rayspectrometrycanbeusedfortheidentificationofspecificgamma-rayemittersinamixtureofradionuclides.Generalinformationonradioactivityandthemeasurementofradiationhasbeenpublished(11and12).Informationonspecificapplicationofgamma-rayspectrometryisalsoavailableintheliterature(13-16).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_30
【页数】:8P.;A4
【正文语种】:英语