1、Designation:D800015(Reapproved 2020)Standard Practice forFlow Conditioning of Natural Gas and Liquids1This standard is issued under the fixed designation D8000;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision
2、.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers flow conditioners that produce afully developed flow profile for liquid and gas phase fluid flowfor circular duct s
3、izes 1-to 60-in.(25.4-to 1525-mm)diameterand Reynolds Number(Re)ranges from transition(100)to100 000 000.These flow conditioners can be used for any typeof flow meter or development of a fully developed flow profilefor other uses.1.2 The central single-hole configuration that is derivedusing fundame
4、ntal screen theory is referenced as the flowconditioner described herein.1.3 Piping lengths upstream and downstream of a flowconditioner are considered a critical component of a flowconditioner and constitute the complete flow conditioner sys-tem.1.4 The values stated in inch-pound units are to be r
5、egardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user
6、of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the
7、Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4150 Terminology Relating to Gaseous Fuels2.2 AGA Standard:3AGA Report No.8 Comp
8、ressibility Factor of Natural Gasand Related Hydrocarbon Gases3.Terminology3.1 Refer to Terminology D4150 for general definitionsrelated to gaseous fuels.Definitions specific to this standardfollow.3.2 Definitions of Terms Specific to This Standard:3.2.1 annuli,nring-shaped object,structure,or regio
9、n.3.2.2 axial symmetry,nsymmetry around an axis;anobject is axially symmetric if its appearance is unchanged ifrotated around an axis.3.2.3 Reynolds number,ndimensionless number used influid mechanics to indicate whether fluid flow past a body or ina duct is steady or turbulent.3.2.4 velocity profil
10、e,nvariation in velocity along a line atright angles to the general direction of flow.4.Significance and Use4.1 Flow conditioners are used for the conditioning of theturbulent flow profile of gases or liquids to reduce the ADD(velocity profile distortion)DEL(turbulence),swirl,or irregu-larities caus
11、ed by the installation effects of piping elbows,length of pipe,valves,tees,and other such equipment or pipingconfigurations that will affect the reading of flow measurementmeters thus inducing measurement errors as a result of the flowprofile of the gas or liquid not having a fully developed flowpro
12、file at the measurement point.45.Flow Conditioner Design Methodology5.1 Pipe Flow ProfilesAlmost any description can beprescribed by using the perforated plate utilizing screen theory.That is,any upstream velocity profile,U1,can be changed to adownstream velocity profile,U2,with the use of a screen(
13、herein referred to as a flow conditioner)(see Fig.1).1This practice is under the jurisdiction of ASTM Committee D03 on GaseousFuels and is the direct responsibility of Subcommittee D03.12 on On-Line/At-LineAnalysis of Gaseous Fuels.Current edition approved Nov.1,2020.Published December 2020.Original
14、lyapproved in 1986.Last previous edition approved in 2015 as D8000 15.DOI:10.1520/D8000-15R20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summ
15、ary page onthe ASTM website.3Available from the American Gas Association,400 N.Capital St.,NW,Washington,DC 20001, various Coriolis Flow Meter manufacturer statements:A Coriolis FlowMeter reportedly does not require flow conditioning,therefore this ASTM standarddoes not apply.Copyright ASTM Internat
16、ional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1NOTE1The upstream flow profile need not be mathematically definedor even known.5.1.1 The intent of t
