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【英文标准名称】:Acoustics-Measurementofairbornenoiseemittedbysteamturbinesanddrivenmachinery
【原文标准名称】:声学.由蒸汽轮机和被驱动机器发出的气载噪音测量
【标准号】:BSEN61063-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1996-07-15
【实施或试行日期】:1996-07-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;涡轮机;试验条件;汽轮机;声学;声强;声测量;噪声;试验设备;报告
【英文主题词】:Acoustictesting;Acoustics;Machinenoise;Noisemeasurements;Soundpressure;Steamturbines;Turbines
【摘要】:1General1.1ThisInternationalStandardappliestothemeasurementofairbornenoiseemittedbyassembliescomprisingsteamturbinesanddrivenmachinery,hereinafterreferredtoasturbinesets.Thesesetsareofallsizeswithoutlimitationofoutputwhenfittedwiththeirnormalauxiliaries.Thisstandardappliesonlytothepartoftheturbineset(turbine,generatorandattachedcomponents)locatedabovetheflooroftheturbineroomandin-sideacontinuousenvelopingmeasurementsurfaceboundedbythisfloor.Anextensiveandcontinuousturbineoperatingfloorofareflectingnatureabovetheturbinefoundationfloorlevelshallbeconsideredasthereflectingplane.1.2Inthecaseoflargeturbinesets,theturbineoperatingfloorisoftenlocatedbelowandnearthehorizontalcentrelineoftheturbine(seefigure1).Ifthisflooriscontinuousandfreefromopeningswhichwouldotherwiseallownoiseradiatedbelowtheturbineoperatingfloortoinfluencethenoisemeasuredatmicrophonelocations,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.3Inthecasewheretheturbineoperatingfloorislocatedbelowandnearthehorizontalcenterlineoftheturbineset,butconsistsof:a)anopengratingconstruction,orb)asolidfloorwithopeningsneartotheboundaryoftheturbineset,orc)walkwaystypically1to2mwideofeithersolidorgratedconstruction,theturbineoperatingfloorcannotbeconsideredasareflectingplane.Inthiscasethereflectingplanewillbetheturbinesetfoundationfloor.Inthecaseofthecontinuousenvelopingmeasurementsurfacebeingboundedbyeithertheturbineoperatingfloorortheturbinefoundationfloor,alargecontributionfromthenoiseofancillaryandauxiliaryplantiocatedbelowtheturbineoperatingfloormaybeexpectedatthemicrophonemeasuringpositions.Inthiscasetheuseofthisstandardforthedeterminationofsoundpowerlevelsisnotvalid.Ifthisstandardistobeemployedforthepurposeofthecomparisonofthe1msoundlevelsofsimilarturbines,theturbineoperatingfloorshallbeusedastheboundingsurfaceforthecontinuousenvelopingmeasurementsurface.Thevalidityofcomparativemeasure-mentswilldependonthenoisepresentatthemeasurementpositionsduetoauxiliaryandancillaryplantanditwillbenecessarytodefineexactlythenumber,typeandlocationoftheseitems.ItispreferabletoestablishtheeffectauxiliaryandancillaryplantnoiseradiationwillhaveonthesoundlevelatthemicrophonelocationsbydeterminingthenoiseemissionoftheseitemsinaccordancewithISO3746,anddeterminingthepropagationofthisnoisetomicro-phonelocations.However,thisprocedureisbeyondthescopeofthisstandard.NOTE-Whenopeningsintheflooraresuitablyblockedduringthetestwithappropriatepanels(uppersideofpanelsshouldhavesamereflectivecharacteristicsastheturbineoperatingfloor),validmeasure-mentsarepermitted.1.4Inthecaseofturbinesetsmountedon,orpartiallysubmergedin,thefoundationfloor,whichmayalsobedefinedastheturbineoperatingfloor,avalidmeasureoftheturbinesetnoiseemissionmaybeobtainedbyuseofthisstandard.1.5Wherenoisecontroltreatmentssuchasenclosuresand/orscreensarefittedtotheturbineset,drivenequipmentandauxiliaries,thetype,locationandextentoftreatmentshallbereported.2MeasurementuncertaintyMeasurementsmadeinconformitywiththisstandardtendtoresultinstandarddeviationswhichareequaltoorlessthanthosegivenintable1.NOTES1Ifthemethodspecifiedinthisstandardisusedtocomparethesoundpowerlevelsofsimilarmachinesthatareomnidirectionalandradiatebroadbandnoise,theuncertaintyinthiscomparisontendstoresultinastandarddeviationwhichisequaltoorlessthan3dBprovidedthatthemeasurementsareperf
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;27_040
【页数】:26P;A4
【正文语种】:英语