1、BS EN ISO14691:2008ICS 75.180.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPetroleum,petrochemical andnatural gas industries Flexible couplingsfor mechanical powertransmission General-purposeapplications (ISO14691:2008)This British Standardwas published und
2、er theauthority of the StandardsPolicy and StrategyCommittee on 28 February2009 BSI 2009ISBN 978 0 580 58659 0Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 14691:2008National forewordThis British Standard is the UK implementation of EN ISO 14691:2008.It supersedes BS EN ISO 14
3、691:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/17/-/6, Materials and equipment for petroleum,petrochemical and natural gas industries.A list of organizations represented on this committee can be obtained onrequest to its secretary.This pub
4、lication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 14691December 2008ICS 75.180.20 Supe
5、rsedes EN ISO 14691:2000 English VersionPetroleum, petrochemical and natural gas industries - Flexiblecouplings for mechanical power transmission - General-purposeapplications (ISO 14691:2008)Industries du ptrole, de la ptrochimie et du gaz naturel -Accouplements flexibles pour transmission de puiss
6、ancemcanique - Applications dusage gnral (ISO14691:2008)Erdl-, petrochemische und Erdgasindustrie - FlexibleKupplungen fr mechanische Kraftbertragung -Allgemeine Anwendungsflle (ISO 14691:2008)This European Standard was approved by CEN on 28 November 2008.CEN members are bound to comply with the CEN
7、/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to
8、any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.C
9、EN 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, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Swe
10、den, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref
11、. No. EN ISO 14691:2008: EBS EN ISO 14691:2008EN ISO 14691:2008 (E) 3 Foreword This document (EN ISO 14691:2008) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum and natural gas industries“ in collaboration with Technical Committee CEN/TC
12、 12 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries”, 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
13、by June 2009, and conflicting national standards shall be withdrawn at the latest by June 2009. 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
14、t rights. This document supersedes EN ISO 14691:2000. 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, Franc
15、e, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 14691:2008 has been approved by CEN as a EN ISO 14691:
16、2008 without any modification. BS EN ISO 14691:2008ISO 14691:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Statutory requirements 5 5 Coupling selection 5 5.1 General. 5 5.2 Compliance 6 6 Purchase
17、rs specification 6 7 Coupling rating . 8 8 Construction requirements 9 8.1 General. 9 8.2 Materials of construction . 10 8.3 Coupling hubs. 11 8.4 Bolting 12 8.5 Electrical insulation 12 8.6 Alignment provision . 12 8.7 Rotor dynamic data 12 8.8 Non-horizontal applications 13 8.9 Additional requirem
18、ents for gear couplings 13 8.10 Additional requirements for metallic flexible-element couplings 13 8.11 Additional requirements for elastomeric couplings . 13 9 Balance 14 9.1 Objectives 14 9.2 Balance quality 14 9.3 Additional balancing requirements. 15 9.4 Verification of coupling balance . 15 10
19、Accessories. 15 11 Manufacturing quality, inspection, testing and preparation for shipment . 15 11.1 Manufacturing quality. 15 11.2 Inspection and testing 16 11.3 Preparation for shipment . 16 12 Vendors data 16 12.1 General. 16 12.2 Proposals. 16 12.3 Contract data. 17 Annex A (informative) Example
20、s of misalignment 19 Annex B (informative) Example of the determination of potential unbalance . 21 Annex C (informative) Coupling tapers 24 Annex D (normative) Coupling guards 25 Annex E (informative) Coupling datasheets 27 Bibliography . 32 BS EN ISO 14691:2008ISO 14691:2008(E) iv ISO 2008 All rig
21、hts reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject f
22、or which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on
23、 all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees a
24、re circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held
25、responsible for identifying any or all such patent rights. ISO 14691 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 6, Processing equipment and systems. This second edition cancels a
26、nd replaces the first edition (ISO 14691:1999), which has been technically revised. BS EN ISO 14691:2008ISO 14691:2008(E) ISO 2008 All rights reserved vIntroduction Users of this International Standard should be aware that further or differing requirements may be needed for individual applications.
27、This International Standard is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This may be particularly appropriate where there is innovative or developing technology. Where an alternative
28、 is offered, the vendor should identify any variations from this International Standard and provide details. For the following applications, the use of ISO 10441 is recommended: large or high-speed machines that may be required to operate continuously for extended periods, are often unspared and are
29、 critical to the continued operation of the installation (special-purpose applications); machines in which the first lateral critical speed is less than the maximum required operating speed (flexible-shaft machines); machines in which the rotor dynamics are particularly sensitive to coupling unbalan
30、ce. This International Standard requires the purchaser to specify certain details and features. A bullet () at the beginning of a subclause or paragraph indicates that either a decision is required or that further information is to be provided by the purchaser. This information should be indicated o
31、n the datasheet(s), typical examples of which are included as Annex E, otherwise it should be stated in the quotation request or in the order. The coupling vendor is not normally required to supply the coupling guard or guards. However, for completeness and for the information of the user of this In
32、ternational Standard, Annex D, which provides requirements for guards, has been added. BS EN ISO 14691:2008BS EN ISO 14691:2008INTERNATIONAL STANDARD ISO 14691:2008(E) ISO 2008 All rights reserved 1Petroleum, petrochemical and natural gas industries Flexible couplings for mechanical power transmissi
33、on General-purpose applications 1 Scope This International Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines for general-purpose applications in the petroleum, petrochemical and natural gas industries. Such applications typica
34、lly require couplings to transmit power at speeds not exceeding 4 000 r/min, between machines in which the first lateral critical speed is above the running speed range (stiff-shaft machines). It can, by agreement, be used for applications outside these limits. NOTE 1 Recommendations are included in
35、 the Introduction as to when the use of ISO 10441 should be considered. This International Standard is applicable to couplings designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing excessive mechanical loading on the coupled
36、machines. Couplings covered by this International Standard include gear (and other mechanical contact types), metallic flexible-element and various elastomeric types. Such couplings can be of all metal construction or can include components of non-metallic materials, such as composites. This Interna
37、tional Standard covers design, materials of construction, inspection and testing of couplings and methods of attachment of the coupling to the shafts (including tapered sleeve and other proprietary devices). This International Standard does not apply to special types of couplings, such as clutch, hy
38、draulic, eddy-current, rigid and radial-spline types. This International Standard does not define criteria for the selection of coupling types for specific applications. NOTE 2 In many cases, couplings covered by this International Standard are manufacturers catalogue items. 2 Normative references T
39、he 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. ISO 286-2:1988, ISO system of limits and fits Part
40、 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 1940-1:2003, Mechanical vibration Balance quality requirements for rotors in a constant (rigid) state Part 1: Specification and verification of balance tolerances ISO 8821, Mechanical vibration Balancing Shaft and
41、fitment key convention ANSI/AGMA 9002, Bores and Keyways for Flexible Couplings (Inch Series) ANSI/AGMA 9003, Flexible Couplings Keyless Fits ANSI/AGMA 9112, Bores and Keyways for Flexible Couplings (Metric Series) BS EN ISO 14691:2008ISO 14691:2008(E) 2 ISO 2008 All rights reservedDIN 7190, Interfe
42、rence fits Calculation and design rules1)3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 angular misalignment double-engagement couplings two minor angles between the extension of each machine shaft centre-line and the centre-line of the stru
43、cture joining the two flexible elements 3.2 angular misalignment single-engagement couplings minor angle between the extensions of the shaft centre-lines of the two coupled machines 3.3 axial displacement change in the relative axial position of the adjacent shaft ends of two coupled machines, usual
44、ly caused by thermal expansion 3.4 continuous torque rating coupling manufacturers declared maximum torque that the coupling can transmit continuously for the specified life 3.5 distance between shaft ends DBSE distance from the extreme end of one shaft (including any threaded end) to the extreme en
45、d of the next shaft or, in the case of integral flanges, the distance from the mating faces 3.6 double-engagement coupling coupling with two planes of flexure NOTE This arrangement enables couplings of certain types, notably gear and metallic flexible-element types, that cannot normally accommodate
46、parallel (or lateral) offset, to do so. 3.7 gear coupling coupling of the mechanical contact type that transmits torque and accommodates misalignment and axial displacement by relative rocking and sliding motion between mating, profiled gear teeth 3.8 lateral offset lateral distance between the cent
47、re-lines of two shafts that are not parallel, measured perpendicularly to the centre-line and in the plane of the shaft end of the driving machine See Annex A. 3.9 manufacturer agency responsible for the design and fabrication of the coupling NOTE The manufacturer is not necessarily the vendor. 1) D
48、eutsches Institut fr Normung, Burggrafenstrae 6, Berlin, Germany D-10787. BS EN ISO 14691:2008ISO 14691:2008(E) ISO 2008 All rights reserved 33.10 maximum allowable speed maximum speed for which the manufacturer has designed the coupling 3.11 maximum allowable temperature maximum continuous temperat
49、ure for which the manufacturer has designed the coupling 3.12 maximum continuous angular misalignment maximum angular misalignment at each plane of flexure that the coupling is able to tolerate for the specified life (5.1.3) when transmitting the coupling continuous torque rating at the coupling rated speed, and when simultaneously subjected to the coupling maximum continuous axial displacement 3.13 maximum continuous axial displacement maximum axial displacement the coupling is able to tolerate for the specifi
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