1、 IEC 60534-2-3 Edition 3.0 2015-12 INTERNATIONAL STANDARD Industrial-process control valves Part 2-3: Flow capacity Test procedures IEC 60534-2-3:2015-12(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified,
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10、c.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 60534-2-3 Edition 3.0 2015-12 INTERNATIONAL STANDARD Industrial-process control valves Part 2-3: Flow capacity Test procedures INTERNATIONAL ELECTR
11、OTECHNICAL COMMISSION ICS 23.060.40; 25.040.40 ISBN 978-2-8322-3055-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC 60534-2-3:2015 IEC 2015 CONTENTS FOREWORD . 4 1 Scope
12、6 2 Normative references 6 3 Terms and definitions 6 4 Symbols 7 5 Test system . 8 5.1 Test specimen 8 5.2 Test section 8 5.3 Throttling valves . 9 5.4 Flow measurement 10 5.5 Pressure taps . 10 5.6 Pressure measurement . 10 5.7 Temperature measurement . 10 5.8 Valve travel . 11 5.9 Installation of
13、test specimen 11 6 Accuracy of tests . 12 7 Test fluids 12 7.1 Incompressible fluids 12 7.2 Compressible fluids 12 8 Test procedure for incompressible fluids 12 8.1 Test procedure for flow coefficient C . 12 8.2 Test procedure for liquid pressure recovery factor F Land combined liquid pressure recov
14、ery factor and piping geometry factor F LP14 8.3 Test procedure for piping geometry factor F p15 8.4 Test procedure for liquid critical pressure ratio factor F F. 15 8.5 Test procedure for Reynolds number factor F Rfor incompressible flow 15 8.6 Test procedure for valve style modifier F d. 15 9 Data
15、 evaluation procedure for incompressible fluids 16 9.1 Non-choked flow . 16 9.2 Choked flow 16 9.3 Calculation of flow coefficient C 17 9.4 Calculation of liquid pressure recovery factor F Land the combined liquid pressure recovery factor and piping geometry factor F LP17 9.5 Calculation of piping g
16、eometry factor F P. 18 9.6 Calculation of liquid critical pressure ratio factor F F18 9.7 Calculation of Reynolds number factor F R18 9.8 Calculation of valve style modifier F d18 10 Test procedure for compressible fluids 19 10.1 Test procedure for flow coefficient C . 19 10.2 Test procedure for pre
17、ssure differential ratio factors x Tand x TP20 10.3 Test procedure for piping geometry factor F p21 10.4 Test procedure for Reynolds number factor F R. 22 10.5 Test procedure for valve style modifier F d. 22 10.6 Test procedure for small flow trim . 22 11 Data evaluation procedure for compressible f
18、luids . 23 IEC 60534-2-3:2015 IEC 2015 3 11.1 Flow equation . 23 11.2 Calculation of flow coefficient C 23 11.3 Calculation of pressure differential ratio factor x T. 23 11.4 Calculation of pressure differential ratio factor x TP. 24 11.5 Calculation of piping geometry factor F p. 24 11.6 Calculatio
19、n of Reynolds number factor F Rfor compressible fluids 24 11.7 Calculation of valve style modifier F d24 11.8 Calculation of flow coefficient C for small flow trim 24 Annex A (normative) Typical examples of test specimens showing appropriate pressure tap locations . 26 Annex B (informative) Engineer
20、ing data . 28 Annex C (informative) Derivation of the valve style modifier, F d. 31 Annex D (informative) Laminar flow test discussion 35 Annex E (informative) Long form F L test procedure . 36 E.1 General . 36 E.2 Test procedure 36 E.3 Graphical data reduction . 36 Annex F (informative) Calculation
21、 of F Pto help determine if pipe/valve port diameters are adequately matched 39 Bibliography 41 Figure 1 Basic flow test system 8 Figure 2 Test section piping requirements 9 Figure 3 Recommended pressure tap connection . 11 Figure A.1 Typical examples of test specimens showing appropriate pressure t
22、ap locations . 27 Figure B.1 Dynamic viscosity of water 28 Figure C.1 Single seated, parabolic plug (flow tending to open) . 34 Figure C.2 Swing-through butterfly valve 34 Figure E.1 Typical flow results . 37 Table 1 Test specimen alignment . 11 Table 2 Minimum inlet absolute test pressure in kPa (b
23、ar) as related to F Land p . 13 Table 3 Numerical constants N 25 Table B.1 Properties for water 28 Table B.2 Properties of air . 29 Table B.3 Test section piping . 30 Table C.1 Numerical constant, N 34 Table F.1 Tabulated values of F Pif upstream and downstream pipe the same size . 40 Table F.2 Tabu
24、lated values of F P if downstream pipe larger than valve . 40 4 IEC 60534-2-3:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL-PROCESS CONTROL VALVES Part 2-3: Flow capacity Test procedures FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organizatio
25、n for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC pu
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34、ttention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights
35、. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60534-2-3 has been prepared by subcommittee 65B: Measurement and control devices, of IEC technical committee 65: Industrial-process measurement, control and automation. The third edition can
36、cels and replaces the second edition published in 1997, of which it constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of informative Annexes B, C, D, E and F. b) Organizational and formatting changes
37、were made to group technically related subject matter. IEC 60534-2-3:2015 IEC 2015 5 The text of this standard is based on the following documents: FDIS Report on voting 65B/1025/FDIS 65B/1028/RVD Full information on the voting for the approval of this standard can be found in the report on voting i
38、ndicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60534 series, published under the general title Industrial-process control valves, can be found on the IEC website. The committee has decided that the cont
39、ents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual ve
40、rsion of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colou
41、r printer. 6 IEC 60534-2-3:2015 IEC 2015 INDUSTRIAL-PROCESS CONTROL VALVES Part 2-3: Flow capacity Test procedures 1 Scope This part of IEC 60534 is applicable to industrial-process control valves and provides the flow capacity test procedures for determining the following variables used in the equa
42、tions given in IEC 60534-2-1: a) flow coefficient C; b) liquid pressure recovery factor without attached fittings F L ; c) combined liquid pressure recovery factor and piping geometry factor of a control valve with attached fittings F LP ; d) piping geometry factor F P ; e) pressure differential rat
43、io factors x Tand x TP ; f) valve style modifier F d ; g) Reynolds number factor F R . 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For
44、 undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60534-1, Industrial-process control valves Part 1: Control valve terminology and general considerations IEC 60534-2-1:2011, Industrial-process control valves Part 2-1: Flow capacity Sizing equa
45、tions for fluid flow under installed conditions IEC 60534-8-2, Industrial-process control valves Part 8-2: Noise considerations Laboratory measurement of noise generated by hydrodynamic flow through control valves IEC 61298-1, Process measurement and control devices General methods and procedures fo
46、r evaluating performance Part 1: General considerations IEC 61298-2, Process measurement and control devices General methods and procedures for evaluating performance Part 2: Tests under reference conditions 3 Terms and definitions For the purposes of this document, the terms and definitions given i
47、n IEC 60534-1, IEC 60534-2-1, IEC 61298-1, and IEC 61298-2 apply. IEC 60534-2-3:2015 IEC 2015 7 4 Symbols Symbol Description Unit C Flow coefficient (K v , C v ) Various (see IEC 60534-1) C RFlow coefficient at rated travel Various (see IEC 60534-1) d Nominal valve size (DN) mm F dValve style modifi
48、er 1 F FLiquid critical pressure ratio factor 1 F LLiquid pressure recovery factor of a control valve without attached fittings 1 F LPCombined liquid pressure recovery factor and piping geometry factor of a control valve with attached fittings 1 F PPiping geometry factor 1 F RReynolds number factor
49、1 F Specific heat ratio factor 1 M Molecular mass of flowing fluid kg/kmol N Numerical constants (see Table 3) Various (see Note 1) p cThermodynamic critical pressure kPa or bar (see Note 2) p vVapour pressure of liquid at inlet temperature kPa or bar p 1Inlet absolute static pressure measured at the upstream pressure tap kPa or bar p 2Outlet absolute static pressure measured at the downstream pressure tap kPa or bar p Differential pressure (p 1 p 2
