1、BS EN15714-3:2009ICS 23.060.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDIndustrial valves ActuatorsPart 3: Pneumatic part-turn actuatorsfor industrial valves BasicrequirementsThis British Standardwas published underthe authority of theStandards Policy andS
2、trategy Committee on 30November 2009 BSI 2009ISBN 978 0 580 54843 7Amendments/corrigenda issued since publicationDate CommentsBS EN 15714-3:2009National forewordThis British Standard is the UK implementation of EN 15714-3:2009.The UK participation in its preparation was entrusted to TechnicalCommitt
3、ee PSE/18/5, Valve actuators.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard c
4、annot confer immunityfrom legal obligations.BS EN 15714-3:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15714-3 October 2009 ICS 23.060.20 English Version Industrial valves - Actuators - Part 3: Pneumatic part-turn actuators for industrial valves - Basic requirements Robinetterie industri
5、elle - Actionneurs - Partie 3: Actionneurs pneumatiques fraction de tour pour robinetterie industrielle - Prescriptions de base Industriearmaturen - Antriebe - Teil 3: Pneumatische Schwenkantriebe fr Industriearmaturen - Grundanforderungen This European Standard was approved by CEN on 12 September 2
6、009. CEN 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
7、 on application to the CEN Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN Management
8、 Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
9、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and
10、by any means reserved worldwide for CEN national Members. Ref. No. EN 15714-3:2009: EBS EN 15714-3:2009EN 15714-3:2009 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53 Classification/Designation 53.1 General 53.2 Action 53.3 Actuator attachment 53.4 Performance data.63.4.1 Output tor
11、ques .63.4.2 Minimum moving pressure .63.4.3 Operating time 63.4.4 Air volume 63.4.5 Motive energy .64 Design requirements .64.1 Endurance of part-turn actuators .64.2 Leakage .74.3 Angle for part-turn actuators 74.4 Environmental conditions .74.4.1 Ambient temperature .74.4.2 Enclosure protection .
12、84.4.3 Corrosion protection .84.5 Basic design .84.5.1 Safety requirements 84.5.2 Part-turn actuator attachment 94.5.3 Pressure connections and pilot valves interface .94.5.4 Fail safe direction for spring return actuators . 114.5.5 Mechanical safety factors 114.5.6 Position indication 114.6 Optiona
13、l equipment 114.6.1 Ancillaries 114.6.2 Manual operation 134.6.3 End stop adjustment for part-turn actuators . 145 Conformity assessment . 145.1 General . 145.2 Type tests 145.3 Control of production process and quality system 146 Marking 156.1 General requirements on marking 157 Part-turn actuator
14、selection guidelines 168 Documentation 16Annex A (normative) Endurance test procedure 17A.1 General . 17A.2 Test equipment . 17A.3 Test conditions . 17A.4 Test procedure 17A.5 Acceptance criteria . 17Annex B (informative) Actuator selection guidelines . 19BS EN 15714-3:2009EN 15714-3:2009 (E) 3 B.1
15、General . 19B.2 Selection parameters 19B.3 Actuator selection . 20B.3.1 General . 20B.3.2 Torque characteristics for rack and pinion or vane actuators . 21B.3.3 Torque characteristics for scotch yoke actuators (e.g. symmetric system) . 22Bibliography 23BS EN 15714-3:2009EN 15714-3:2009 (E) 4 Forewor
16、d This document (EN 15714-3:2009) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by
17、 April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such paten
18、t rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irelan
19、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 15714-3:2009EN 15714-3:2009 (E) 5 1 Scope This document provides basic requirements for pneumatic part-turn valve actuators, both d
20、ouble acting and single acting, used for on-off and modulating control duties. It includes guidelines, recommendations and methods for enclosure and corrosion protection, control and testing. It does not apply to pneumatic actuators which are integral parts of control valves. Other requirements, or
21、conditions of use, different from those indicated in this document, should be subject to negotiations, between the purchaser and the manufacturer/supplier, prior to order. The terms and definitions applicable to this European Standard are given in EN 15714-1. 2 Normative references The following ref
22、erenced 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. EN 12570, Industrial valves Method for sizing the operating elemen
23、t EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) EN ISO 5211, Industrial valves Part-turn valve actuator attachments (
24、ISO 5211:2001) EN ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests (ISO 9227:2006) ISO 5599-2, Pneumatic fluid power Five-port directional control valves Part 2: Mounting interface surfaces with optional electrical connector ASME B1.20.1:1983, Pipe Threads, General Purpose (Inch)
25、 3 Classification/Designation 3.1 General Part-turn valve actuators are classified by action and interface as detailed below. 3.2 Action a) Double Acting (DA) b) Single Acting (SA) with spring action to move clock-wise (CW) or counter clock-wise (CCW), as per 4.5.4 3.3 Actuator attachment As per EN
26、ISO 5211. BS EN 15714-3:2009EN 15714-3:2009 (E) 6 3.4 Performance data 3.4.1 Output torques The guaranteed minimum output torque capability of the actuator, in both directions, at specified supply pressures shall be provided by the manufacturer/supplier. Where the output torque varies with the strok
27、e, in a non-linear relationship, tabulated data and/or torque/stroke curves shall be provided. 3.4.2 Minimum moving pressure The actuator minimum moving pressure for double acting actuators, at ambient temperature, shall be made available, by the manufacturer/supplier upon request. 3.4.3 Operating t
28、ime The actuator manufacturer/supplier shall state the minimum operating time in both directions, without external load, at nominal pressure and without any significant external restriction on supply flow rate and exhaust. 3.4.4 Air volume The manufacturer/supplier shall state the internal actuator
29、displaced volume (litres) for both directions, including the dead volumes (see Clause 8). 3.4.5 Motive energy 3.4.5.1 Operating medium The operating medium should be compressed air, unless otherwise specified. Other compressed gases or pressurised fluids may be used, on agreement between the manufac
30、turer/supplier and purchaser, ensuring they are compatible with internal actuator parts and lubricants. 3.4.5.2 Quality The operating medium shall have a dew point equal to 20 C or, to be at least, 10 C below the ambient temperature (ISO 8573-1, Class 3). The maximum particle size shall not exceed 4
31、0 m (ISO 8573-1, Class 5). 3.4.5.3 Pressure The manufacturer/supplier shall indicate the actuators pressure limits. The maximum allowable pressure shall be at least 0,8 MPa (8 bar), unless otherwise specified. The minimum test pressure for pressurised parts shall be 1,43 times the maximum allowable
32、pressure. 4 Design requirements 4.1 Endurance of part-turn actuators The actuator shall be designed to have a minimum endurance, without maintenance, in accordance with values given in Table 1. These are based on a load of at least 60 % of the run torque at 0,55 MPa 5,5 bar supply pressure and in ac
33、cordance with the test procedure detailed in Annex A. BS EN 15714-3:2009EN 15714-3:2009 (E) 7 Table 1 Minimum number of cycles Endurance test Nominal torquea Nm Piston or vane actuator Minimum number of cyclesbMaximum stroking time for testing, based on 0-90 s 125 500 000c3 1 000 500 000 5 2 000 250
34、 000 8 8 000 100 000 15 32 000 25 000 20 63 000 10 000 30 125 000 5 000 45 250 000 2 500 60 aBased on EN ISO 5211. bOne cycle consists of nominal 90 angular travel in both directions (i.e. 90 to open + 90 to close). For angular travel other than 90, the endurance shall be agreed between the purchase
35、r and the manufacturer/supplier. cFor thermoplastic actuators the minimum number of cycles shall be 250 000. 4.2 Leakage The actuator shall have no visible external leakage as detailed in Table 8 for the duration of the production test. The test pressure shall be at least nominal pressure (0,55 MPa
36、5,5 bar). The minimum duration for the leakage detection test shall be: a) 15 s for volumes up to and including 2 l; b) 30 s for volumes up to and including 5 l; c) 60 s for volumes above 5 l. 4.3 Angle for part-turn actuators Part-turn actuators without adjustable end-stops shall be designed for an
37、 output movement of 90 (- 0, + 2) as standard. For part-turn actuators with adjustable end-stops and a standard nominal output movement of 90, the adjustment range shall be stated by the manufacturer/supplier and shall be, at least, 3. Other angles are subject to agreement between the manufacturer/s
38、upplier and purchaser. 4.4 Environmental conditions 4.4.1 Ambient temperature The actuator shall be designed for operation at an ambient temperature range between 20 C and + 60 C, unless otherwise agreed between the manufacturer/supplier and purchaser. BS EN 15714-3:2009EN 15714-3:2009 (E) 8 4.4.2 E
39、nclosure protection The non pressurised enclosure of the actuator shall be IP 6X according to EN 60529 (excluding the exhaust port). 4.4.3 Corrosion protection Pneumatic actuators shall be protected against external corrosion by proper material selection and/or surface treatment. The actuator manufa
40、cturers technical documentation shall specify the corrosion protection category according to Table 2. Table 2 Environmental corrosion categories Corrosion category Typical environments Exterior Interior C2 (low) Atmospheres with low level of pollution. Mostly rural areas. Unheated buildings where co
41、ndensation may occur, e.g. depots, sport halls. C3 (medium) Urban and industrial atmospheres, moderate sulphur dioxide pollution. Coastal areas with low salinity. Production rooms with high humidity and some air pollution, e.g. food-processing plants, laundries, breweries. C4 (high) Industrial areas
42、 and coastal areas with moderate salinity. Chemical plants, swimming pools, coastal shipyards. C5-I (very high industrial) Industrial areas with high humidity and aggressive atmosphere. Buildings or areas with almost permanent condensation and with high pollution. C5-M (very high marine) Coastal and
43、 offshore areas with high salinity. Buildings or areas with almost permanent condensation and with high pollution. Immersed in wateraIm 1 (Immersed in fresh water) River installations, hydro-electric power plants. Im 2 (Immersed in sea or brackish water) Harbour areas and offshore structures. aPneum
44、atic actuators covered by this European Standard are not designed for permanent immersion unless otherwisespecified. NOTE 1 Table 2 is taken, for reference purposes only, from EN ISO 12944-2. The actuator corrosion protection may also be achieved by systems/methods which deviate from those specified
45、 in EN ISO 12944-5. NOTE 2 Table 2 may be used to define the corrosion category in order to help the actuator manufacturers to define the surface treatment for corrosion protection. Test assessment and test procedures are the responsibility of the manufacturer. 4.5 Basic design 4.5.1 Safety requirem
46、ents Actuators shall be designed taking into account the technical principles and specifications for safety. The design of spring return actuators shall permit the safe assembly/disassembly, when complying with the manufacturer/suppliers instructions. BS EN 15714-3:2009EN 15714-3:2009 (E) 9 4.5.2 Pa
47、rt-turn actuator attachment The attachment for part-turn actuators shall comply with EN ISO 5211. The output drive of part-turn actuators may be an integral part or a removable component to allow it, when necessary, to be machined to suit the driven component of the valve. The material of the drive
48、component shall clearly be indicated in the manufacturers/suppliers documentation. 4.5.3 Pressure connections and pilot valves interface The actuators shall have two pressure connections, unless otherwise specified. The position, location, orientation and form of the pressure connections shall be es
49、tablished by the manufacturer. Connections shall be clearly identified with numbers (2 and 4), in accordance with ISO 5599-2. When pressurised, direction of movement shall be in accordance with Table 3 below, unless otherwise specified. The dimensions of the pressure connections/interface shall be as specified in Tables 3 and 4 and Figures 1 and 2. The actuator shall be properly marked to indicate the
