【英文标准名称】:Measurementoffluidflowbymeansofpressuredifferentialdevicesinsertedincircularcross-sectionconduitsrunningfull.NozzlesandVenturinozzles
【原文标准名称】:用插入圆截面管道中的压差装置测量流体流量.喷嘴和文氏喷嘴
【标准号】:BSENISO5167-3-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-03-18
【实施或试行日期】:2003-03-18
【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】:系数;变流器;定义(术语);隔膜;隔膜(机械部件);差动装置;尺寸规格;方程;流动;流量计算;流量测定;流量测量;流体;数学计算;测量;安装;喷嘴;节流孔板;管道;整流器;规范(验收);管;文氏喷嘴;文杜利管
【英文主题词】:Coefficients;Converters;Definitions;Diaphragms;Diaphragms(mechanicalcomponents);Differentialdevices;Dimensions;Equations;Flow;Flowcalculation;Flowmeasurement;Flowmeasurements;Fluids;Mathematicalcalculations;Measurement;Mounting;Nozzles;Orificeplates;Pipelines;Rectifiers;Specification(approval);Tubes;Venturinozzles;Venturitubes
【摘要】:ThispartofISO5167specifiesthegeometryandmethodofuse(installationandoperatingconditions)ofnozzlesandVenturinozzleswhentheyareinsertedinaconduitrunningfulltodeterminetheflowrateofthefluidflowingintheconduit.ThispartofISO5167alsoprovidesbackgroundinformationforcalculatingtheflowrateandisapplicableinconjunctionwiththerequirementsgiveninISO5167-1.ThispartofISO5167isapplicabletonozzlesandVenturinozzlesinwhichtheflowremainssubsonicthroughoutthemeasuringsectionandwherethefluidcanbeconsideredassingle-phase.Inaddition,eachofthedevicescanonlybeusedwithinspecifiedlimitsofpipesizeandReynoldsnumber.Itisnotapplicabletothemeasurementofpulsatingflow.ItdoesnotcovertheuseofnozzlesandVenturinozzlesinpipesizeslessthan50mmormorethan630mm,orwherethepipeReynoldsnumbersarebelow10000.ThispartofISO5167dealswitha)twotypesofstandardnozzles:1)theISA5)1932nozzle;2)thelongradiusnozzle6);b)theVenturinozzle.ThetwotypesofstandardnozzlearefundamentallydifferentandaredescribedseparatelyinthispartofISO5167.TheVenturinozzlehasthesameupstreamfaceastheISA1932nozzle,buthasadivergentsectionand,therefore,adifferentlocationforthedownstreampressuretappings,andisdescribedseparately.Thisdesignhasalowerpressurelossthanasimilarnozzle.ForbothofthesenozzlesandfortheVenturinozzledirectcalibrationexperimentshavebeenmade,sufficientinnumber,spreadandqualitytoenablecoherentsystemsofapplicationtobebasedontheirresultsandcoefficientstobegivenwithcertainpredictablelimitsofuncertainty.
【中国标准分类号】:A42
【国际标准分类号】:17_120_10
【页数】:42P.;A4
【正文语种】:英语