EN 60534-8-3:2011
(Main)Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
IEC 60534-8-3:2010 establishes a theoretical method to predict the external sound-pressure level generated in a control valve and within adjacent pipe expanders by the flow of compressible fluids. This method considers only single-phase dry gases and vapours and is based on the perfect gas laws. It is assumed that the downstream piping is straight for a length of at least 2 m from the point where the noise measurement is made. The method is applicable to the following single-stage valves: - globe (straight pattern and angle pattern), - butterfly, - rotary plug (eccentric, spherical), - ball, and - valves with cage trims. Specifically excluded are the full bore ball valves where the product FpC exceeds 50 % of the rated flow coefficient. This third edition cancels and replaces the second edition published in 2000. This edition constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows: - predicting noise as a function of frequency; - using laboratory data to determine the acoustical efficiency factor.
Stellventile für die Prozessregelung - Teil 8-3: Geräuschbetrachtungen - Berechnungsverfahren zur Vorhersage der aerodynamischen Geräusche von Stellventilen
Vannes de régulation des processus industriels - Partie 8-3: Considérations sur le bruit - Méthode de prédiction du bruit aérodynamique des vannes de régulation
La CEI 60534-8-3:2010 établit une méthode théorique pour prévoir le niveau de pression acoustique externe engendré dans une vanne de régulation et dans les raccords adjacents par le débit d'un fluide compressible. Cette méthode ne considère que les régimes monophasiques de gaz et vapeurs secs, et est basée sur la loi des gaz parfaits. On suppose que la tuyauterie aval comprend une longueur droite d'au moins 2 m à partir du point de mesure du bruit. La méthode est applicable aux vannes mono-étagées suivantes: - à soupape (droites et d'équerre), - à papillon, - à obturateur rotatif (excentré, sphérique), - à tournant sphérique, et - aux vannes à cage. Les vannes à tournant sphérique à passage direct, pour lesquelles le produit FpC dépasse 50 % du coefficient de débit assigné, sont spécifiquement exclues. Cette troisième édition annule et remplace la deuxième édition parue en 2000. Cette édition constitue une révision technique. Par rapport à l'édition précédente, les modifications techniques majeures sont les suivantes: - la prédiction du bruit en fonction de la fréquence; - l'utilisation des données de laboratoire pour déterminer le coefficient de rendement acoustique.
Regulacijski ventili za industrijske procese - 8-3. del: Šum - Metoda napovedovanja aerodinamičnega šuma regulacijskega ventila (IEC 60534-8-3:2010)
Ta standard vzpostavlja teoretično metodo za napovedovanje zunanjega nivoja zračnega pritiska, ki se naredi v regulacijskem ventilu in v bližnjih razširjevalcih cevi s pretokom stisljivih tekočin. Ta metoda upošteva samo enofazne suhe pline in hlape in temelji na zakonih popolnega plina. Predvideva se, da je dovodno cevje ravno z dolžino vsaj 2 m od točke, kjer so bile izvedene meritve šuma. Metoda velja za naslednje enostopenjske ventile: – kroglasti (ravni vzorec ali kotni vzorec); – metuljasti – rotacijski ventil z vtičem (ekscentrični, sferični); – krogla in – ventili s prirezanimi kletkami. Izrecno izvzeti so polni kroglasti ventili, kjer produktni FpC presega 50 % ocenjenega koeficienta pretoka. Ta tretja izdaja razveljavlja in nadomešča drugo izdajo, objavljeno leta 2000. Ta izdaja je tehnična revizija. Večje tehnične spremembe glede na prejšnjo izdajo so naslednje: – napovedovanje šuma kot funkcije frekvence; – uporaba laboratorijskih podatkov za določanje faktorjev akustične učinkovitosti.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vannes de régulation des processus industriels - Partie 8-3: Considérations sur le bruit - Méthode de prédiction du bruit aérodynamique des vannes de régulation (IEC 60534-8-3:2010)Vannes de régulation des processus industriels - Partie 8-3: Considérations sur le bruit - Méthode de prévision du bruit aérodynamique des vannes de régulation (CEI 60534-8-3:2010)Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method (IEC 60534-8-3:2010)25.040.40Merjenje in krmiljenje industrijskih postopkovIndustrial process measurement and control23.060.40Pressure regulators17.140.20Emisija hrupa naprav in opremeNoise emitted by machines and equipmentICS:Ta slovenski standard je istoveten z:EN 60534-8-3:2011SIST EN 60534-8-3:2011en01-marec-2011SIST EN 60534-8-3:2011SLOVENSKI
STANDARDSIST EN 60534-8-3:20011DGRPHãþD
EUROPEAN STANDARD EN 60534-8-3 NORME EUROPÉENNE
EUROPÄISCHE NORM January 2011
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60534-8-3:2011 E
ICS 17.140.20; 23.060.40; 25.040.40 Supersedes EN 60534-8-3:2000
English version
Industrial-process control valves -
Part 8-3: Noise considerations -
Control valve aerodynamic noise prediction method (IEC 60534-8-3:2010)
Vannes de régulation des processus industriels -
Partie 8-3: Considérations sur le bruit -
Méthode de prédiction du bruit aérodynamique des vannes de régulation(CEI 60534-8-3:2010)
Stellventile für die Prozessregelung -
Teil 8-3: Geräuschbetrachtungen -
Berechnungsverfahren zur Vorhersage der aerodynamischen Geräusche von Stellventilen
(IEC 60534-8-3:2010)
This European Standard was approved by CENELEC on 2011-01-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
2011-01-01. This European Standard supersedes EN 60534-8-3:2000. The significant technical changes with respect to EN 60534-8-3:2000 are as follows: – predicting noise as a function of frequency; – using laboratory data to determine the acoustical efficiency factor. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2011-10-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2014-01-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60534-8-3:2010 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated:
[1] IEC 60534-2-1 NOTE
Harmonized as EN 60534-2-1. [2] IEC 60534-8-1 NOTE
Harmonized as EN 60534-8-1. __________ SIST EN 60534-8-3:2011
- 3 - EN 60534-8-3:2011 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60534 Series
Industrial-process control valves EN 60534 Series
IEC 60534-1 - Industrial-process control valves -
Part 1: Control valve terminology and general considerations EN 60534-1 -
IEC 60534-8-3 Edition 3.0 2010-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial-process control valves –
Part 8-3: Noise considerations – Control valve aerodynamic noise prediction method
Vannes de régulation des processus industriels –
Partie 8-3: Considérations sur le bruit – Méthode de prédiction du bruit aérodynamique des vannes de régulation
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 17.140.20; 23.060.40; 25.040.40 PRICE CODECODE PRIXISBN 978-2-88912-241-7
– 2 – 60534-8-3 ã IEC:2010 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 8 4 Symbols . 9 5 Valves with standard trim . 12 5.1 Pressures and pressure ratios. 12 5.2 Regime definition . 13 5.3 Preliminary calculations . 14 5.3.1 Valve style modifier Fd. 14 5.3.2 Jet diameter Dj . 14 5.3.3 Inlet fluid density r1 . 14 5.4 Internal noise calculations . 15 5.4.1 Calculations common to all regimes . 15 5.4.2 Regime dependent calculations . 16 5.4.3 Downstream calculations . 18 5.4.4 Valve internal sound pressure calculation at pipe wall . 19 5.5 Pipe transmission loss calculation. 20 5.6 External sound pressure calculation . 21 5.7 Calculation flow chart . 22 6 Valves with special trim design . 22 6.1 General . 22 6.2 Single stage, multiple flow passage trim . 22 6.3 Single flow path, multistage pressure reduction trim (two or more throttling steps) . 23 6.4 Multipath, multistage trim (two or more passages and two or more stages) . 25 7 Valves with higher outlet Mach numbers . 27 7.1 General . 27 7.2 Calculation procedure . 27 8 Valves with experimentally determined acoustical efficiency factors . 28 9 Combination of noise produced by a control valve with downstream installed two or more fixed area stages . 29 Annex A (informative)
Calculation examples . 31 Bibliography . 46
Figure 1 – Single stage, multiple flow passage trim . 23 Figure 2 – Single flow path, multistage pressure reduction trim . 24 Figure 3 – Multipath, multistage trim (two or more passages and two or more stages) . 26 Figure 4 – Control valve with downstream installed two fixed area stages . 30
Table 1 – Numerical constants N . 15 Table 2 – Typical values of valve style modifier Fd (full size trim) . 15 Table 3 – Overview of regime dependent equations . 17 SIST EN 60534-8-3:2011
60534-8-3 ã IEC:2010 – 3 – Table 4 – Typical values of Ah and Stp . 18 Table 5 – Indexed frequency bands . 19 Table 6 – Frequency factors Gx (f) and Gy (f) . 21 Table 7 – “A” weighting factor at frequency fi . 22
– 4 – 60534-8-3 ã IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
INDUSTRIAL-PROCESS CONTROL VALVES –
Part 8-3: Noise considerations –
Control valve aerodynamic noise prediction method
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8) Attention 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. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60534-8-3 has been prepared by subcommittee 65B: Measurements and control devices, of IEC technical committee 65: Industrial-process measurement, control and automation. This third edition cancels and replaces th
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