BS EN 60534-1-2005 Industrial-process control valves - Control valve terminology and general considerations《工业过程控制阀 控制阀术语和一般考虑》.pdf

1、BRITISH STANDARD BS EN 60534-1:2005 Incorporating Corrigendum No. 1 Industrial-process control valves Part 1: Control valve terminology and general considerations The European Standard EN 60534-1:2005 has the status of a British Standard ICS 23.060.40; 25.040.40 BS EN 60534-1:2005 This British Stand

2、ard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2005 BSI 19 April 2005 ISBN 0 580 45696 X National foreword This British Standard is the official English language version of EN 60534-1:2005. It is identical with IEC 60534-1:2005. It supersedes BS EN 6

3、0534-1:1993, which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/65, Measurement and control, to Subcommittee GEL/65/2, Elements of systems, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on r

4、equest to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BS

5、I Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquire

6、rs to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This docume

7、nt comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15662 Corrigendum No. 1 19 April 2005 Corr

8、ection to supersession detailsEUROPEAN STANDARD EN 60534-1 NORME EUROPENNE EUROPISCHE NORM February 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassa

9、rt 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60534-1:2005 E ICS 23.060.40; 25.040.40 Supersedes EN 60534-1:1993English version Industrial-process control valves Part 1: Control valve terminology an

10、d general considerations (IEC 60534-1:2005) Vannes de rgulation des processus industriels Partie 1: Terminologie des vannes de rgulation et considrations gnrales (CEI 60534-1:2005) Stellventile fr die Prozessregelung Teil 1: Begriffe und allgemeine Betrachtungen (IEC 60534-1:2005) This European Stan

11、dard was approved by CENELEC on 2005-02-01. 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 concern

12、ing 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 it

13、s 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

14、 Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 65B/543/FDIS, future edition 3 of IEC 60534-1, prepared by SC 65B, Devices, of IEC TC 65, Industrial-process measurement and control,

15、 was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60534-1 on 2005-02-01. This European Standard supersedes EN 60534-1:1993. The main changes with respect to EN 60534-1:1993 are an update of the definitions given in EN 60534-1 in order to harmonize them with current te

16、rminology. 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) 2005-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-02-01

17、 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60534-1:2005 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: ISO 670

18、8 NOTE Harmonized as EN ISO 6708:1995 (not modified). _ Page2 EN605341:2005CONTENTS EROF.DROW5 1 Scope 4 2 Normative references .4 3 Component terminology4 4 Functional terminology7 5 Testing requirements11 5.1 Production testing11 5.2 Type testing 11 6 Prediction methods.11 6.1 Valve sizing.11 6.2

19、Noise levels.11 Bibliography .13 Annex ZA (normative) Normative references to international publications with their corresponding European publications . 12 Page3 EN605341:2005INDUSTRIAL-PROCESS CONTROL VALVES Part 1: Control valve terminology and general considerations 1 Scope This part of IEC 6053

20、4 applies to all types of industrial-process control valves (hereinafter referred to as control valves). This part establishes a partial basic terminology list and provides guidance on the use of all other parts of IEC 60534. 2 Normative references The following referenced documents are indispensabl

21、e 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. IEC 60534 (all parts), Industrial-process control valves 3 Component terminology 3.1 control valve p

22、ower-operated device which changes the fluid flow rate in a process control system. It consists of a valve connected to an actuator that is capable of changing the position of a closure member in the valve in response to a signal from the controlling system 3.1.1 control valve with a linear motion c

23、losure member 3.1.1.1 diaphragm valve valve in which a flexible closure member isolates the line fluid from the actuating mechanism and provides a seal to the atmosphere 3.1.1.2 gate valve valve whose closure member is a flat gate that moves in a direction parallel to the plane of the seat 3.1.1.3 g

24、lobe (angle) valve valve in which the closure member moves in a direction perpendicular to the plane of the seat(s) Page4 EN605341:20053.1.2 control valve with a rotary motion closure member 3.1.2.1 ball valve valve with a closure member that is a sphere with an internal passage. The centre of the s

25、pherical surface is coincident with the axis of the shaft. 3.1.2.2 segmented ball valve valve with a closure member that is a segment of a sphere. The centre of the spherical surface is coincident with the axis of the shaft 3.1.2.3 butterfly valve valve with a circular body and a rotary motion disk

26、closure member, pivotally supported by its shaft. The shaft and/or closure member may be centred or offset 3.1.2.4 plug valve valve with a closure member that is cylindrical or conical, with an internal passage 3.1.2.5 eccentric plug valve valve with an eccentric closure member that may be in the sh

27、ape of a spherical or conical segment 3.2 valve assembly forming a pressure retaining envelope containing a closure member for changing the flow rate of the process fluid 3.2.1 valve body part of the valve which is the main pressure retaining boundary. It provides the fluid-flow passageways and the

28、pipe-connecting ends 3.2.2 bonnet portion of the valve which closes an opening in the body and through which passes the stem connecting the closure member to the actuator 3.2.3 end connection valve body configuration provided to make a pressure tight joint to the pipe carrying the fluid to be contro

29、lled 3.2.3.1 flanged ends end connections incorporating flanges which allow pressure seals by mating with corres- ponding flanges on the piping 3.2.3.2 flangeless ends end connections where no flanges are incorporated on the valve body. Valve body ends incorporate facings which mate with correspondi

30、ng facings on flanges attached to the connecting piping. Installation is accomplished by clamping the valve between the pipe flanges Page5 EN605341:20053.2.3.3 threaded ends end connections incorporating threads, either male or female 3.2.3.4 welded ends end connections where valve body ends have be

31、en prepared for welding to the line pipe or other fittings. Such connections may be of the butt-weld or socket-weld types 3.2.4 valve trim functional components of the valve, excluding the body, bonnet and blind head (if present), which are in contact with the fluid 3.2.4.1 valve seats corresponding

32、 sealing surfaces within a control valve which make full contact when the control valve is in the closed position 3.2.4.2 seat ring part assembled in the valve body to provide a removable valve seat 3.2.4.3 closure member movable part of the valve which is positioned in the flow path to restrict the

33、 flow through the valve. A closure member may be a plug, ball, disk, vane, gate, diaphragm, etc. 3.2.4.4 valve stem (or shaft) component extending through the bonnet which connects the actuator to, and positions, the closure member. For rotary valves, the word shaft should be used in place of stem 3

34、.3 actuator device or mechanism which transforms a signal into a corresponding movement controlling the position of the internal regulating mechanism (closure member) of the control valve. The signal or energizing force may be pneumatic, electric, hydraulic, or any combination thereof 3.3.1 actuator

35、 power unit that part of the actuator which coverts fluid, electrical, thermal or mechanical energy into actuator stem motion to develop thrust or torque 3.3.2 yoke structure which rigidly connects the actuator power unit to the valve. It can be an integral part of the bonnet or actuator 3.3.3 actua

36、tor stem component which transmits motion from the actuator power unit to the valve stem (or shaft) Page6 EN605341:20053.4 fitting any device such as a reducer, expander, elbow, T-piece, or bend which is either close- coupled or attached direct to an end connection of a control valve 4 Functional te

37、rminology 4.1 nominal size DN alphanumeric designation of size for components of a pipework system, which is used for reference purposes. It comprises the letters DN followed by a dimensionless whole number which is related direct to physical size, in millimetres, of the bore or outside diameter of

38、the end connections NOTE 1 It is designated by the letters DN followed by a number from the following series: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; etc. NOTE 2 The number following the letters DN does not represent a measurable value and should not be used for c

39、alculation purposes except where specified in the relevant standard. NOTE 3 The definition of nominal size is in accordance with ISO 6708. 4.2 nominal pressure PN numerical designation which is a convenient rounded number for reference purposes. All equipment of the same nominal size (DN) designated

40、 by the same PN number shall have compatible mating dimensions NOTE 1 The maximum allowable pressure depends upon materials, design and working temperatures and should be selected from the pressure/temperature rating tables in the appropriate standards. NOTE 2 It is designated by the letters PN foll

41、owed by the appropriate reference number from the following series: 2,5; 6; 10; 16; 20; 25; 40; 50; etc. (see ISO 7268 and EN 61333). NOTE 3 The definition of nominal pressure is in accordance with ISO 7268. 4.3 NPS numeric designation of size for components of a pipework system, which is used for r

42、eference purposes. It comprises the letters NPS followed by a dimensionless number. NPS is related to nominal size DN as follows: DN 10 15 20 25 32 40 50 65 80 100 NPS 3/8 1 1 1 2 2 3 4 NOTE For NPS greater than 4, the equivalence is DN = 25 times NPS. 4.4 class convenient round number used to desig

43、nate pressure-temperature ratings NOTE It is designated by the word Class followed by the appropriate reference number from the following series: 125; 150; 250; 300; 600; 900; 1 500; 2 500. 4.5 closure member position 4.5.1 closed position position of the closure member when a continuous surface or

44、line of contact is established with the valve seat. For non-seating valves, the closed position is obtained when the flow passageway is minimum Page7 EN605341:20054.5.2 travel displacement of the closure member from the closed position 4.5.3 rated travel displacement of the closure member from the c

45、losed position to the designated full open position 4.5.4 relative travel h ratio of the travel at a given opening to the rated travel 4.5.5 overtravel displacement of the actuator stem, or shaft, beyond the closed position. For some valve designs, overtravel may occur as the closure member moves to

46、 a mechanical stop position after full exposure of the flow restricting orifice(s) 4.6 flow coefficient basic coefficient used to state the flow capacity of a control valve under specified conditions. Flow coefficients in current use are K vand C vdepending upon the system of units NOTE 1 It will be

47、 noted that the dimensions and units on each of the following defined flow coefficients are different. However, it is possible to relate these flow coefficients numerically. This relationship is as follows: 865 , 0 v v = C K(1) NOTE 2 The flow coefficient definitions for K vand C vinclude some units

48、, nomenclature, and temperature values which are not consistent with other parts of IEC 60534. These inconsistencies are limited to this subclause and are only used to show the unique relationships traditionally used in the control valve industry. These inconsistencies do not affect the other parts

49、of IEC 60534. 4.6.1 flow coefficient K vflow coefficient K v in cubic metres per hour is a special volumetric flow rate in cubic metres per hour (capacity) through a valve at a specified travel and in the following conditions: the static pressure loss ( v k p ) across the valve is 10 5Pa (1 bar), the fluid is water within a temperature range of 278 K to 313 K (5 C to 40 C), the unit of the volumetric flow rate is the cubic metre per hour. The v