1、Special Purpose Couplings for Petroleum, Chemical and Gas Industry Services API STANDARD 671 FOURTH EDITION, AUGUST 2007 ISO 10441:2007 (Identical), Petroleum, petrochemical and natural gas industriesFlexible couplings for mechanical power transmissionSpecial-purpose applications Copyrighted materia
2、l for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying prohibited.Copyrighted material for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying prohibited.Special Notes A
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17、nse only, copying prohibited.iiiContents Page API Foreword ii Foreword .v Introductionvi 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Statutory requirements.7 5 Coupling selection 7 6 Coupling design 9 7 Coupling ratings11 8 Coupling requirements .12 8.1 Metallic flexible-element co
18、uplings.12 8.2 Machining.12 8.3 Spacer.13 8.4 Hub type .13 8.5 Integral flanges13 8.6 Hubs13 8.7 Solo plate (idling adapter) 15 8.8 Moment simulator15 8.9 Component fit tolerances and potential unbalance calculations.15 8.10 Fasteners (including studs) .15 8.11 Electrical insulation.16 8.12 Dynamics
19、16 9 Balance.17 9.1 General .17 9.2 Balancing methods .18 9.3 Balance criteria20 9.4 Trim balance holes23 10 Materials .24 11 Accessories .24 12 Manufacturing quality, inspection, testing and preparation for shipment25 12.1 Manufacturing quality .25 12.2 Inspection and testing 25 12.3 Inspection.26
20、12.4 Testing26 12.5 Preparation for shipment27 13 Vendor data27 13.1 General .27 13.2 Proposals and contract data 28 Annex A (normative) Torsional damping couplings and resilient couplings.31 Annex B (normative) Gear couplings .34 Copyrighted material for licensees use only.A00854834 21 Oct 09Copyri
21、ghted material for licensees use only.Single user license only, copying prohibited.iv Annex C (normative) Quill-shaft couplings . 36 Annex D (informative) Factors for metallic element couplings . 37 Annex E (informative) Example of the determination of potential unbalance . 39 Annex F (informative)
22、Examples of misalignments 43 Annex G (informative) Coupling tapers 44 Annex H (normative) Coupling guards 45 Annex I (informative) Procedure for residual unbalance check 47 Annex J (informative) Coupling datasheets 51 Bibliography. 56 Copyrighted material for licensees use only.A00854834 21 Oct 09Co
23、pyrighted material for licensees use only.Single user license only, copying prohibited.vForeword 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
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25、aborates closely with the International Electrotechnical Commission (IEC) on 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 St
26、andards. Draft International Standards adopted by the technical committees are 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
27、of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10441 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcom
28、mittee SC 6, Processing equipment and systems. This second edition cancels and replaces the first edition (ISO 10441:1999), which has been technically revised. Copyrighted material for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying
29、 prohibited.vi Introduction This International Standard was developed from the API Std 671, 3rd edition, 1998. It is intended that the 4th edition of API Std 671 will be identical to this International Standard. Users of this International Standard should be aware that further or differing requireme
30、nts may be needed for individual applications. 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
31、or developing technology. Where an alternative is offered, the vendor should identify any variations from this International Standard and provide details. This International Standard requires the purchaser to specify certain details and features. A bullet () at the beginning of a subclause or paragr
32、aph indicates that either a decision is required or further information is to be provided by the purchaser. This information should be indicated on the datasheet(s), typical examples of which are included as Annex J; otherwise it should be stated in the quotation request or in the order. Copyrighted
33、 material for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying prohibited.1Petroleum, petrochemical and natural gas industries Flexible couplings for mechanical power transmission Special-purpose applications 1 Scope This Internation
34、al Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines in special-purpose applications in the petroleum, petrochemical and natural gas industries. Such applications are typically in large and/or high speed machines, in services
35、that can be required to operate continuously for extended periods, are often unspared and are critical to the continued operation of the installation. By agreement, it can be used for other applications or services. Couplings covered by this International Standard are designed to accommodate paralle
36、l (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing unacceptable mechanical loading on the coupled machines. It is applicable to gear, metallic flexible element, quill shaft and torsionally resilient type couplings. Torsional damping and resilient type c
37、ouplings are detailed in Annex A; gear-type couplings are detailed in Annex B and quill shaft style couplings are detailed in Annex C. This International Standard covers the design, materials of construction, manufacturing quality, inspection and testing of special-purpose couplings. This Internatio
38、nal Standard does not define criteria for the selection of coupling types for specific applications. This International Standard is not applicable to other types of couplings, such as clutch, hydraulic, eddy-current, rigid, radial spline, chain and bellows types. 2 Normative references The following
39、 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 262, ISO general-purpose metric screw threads Selected siz
40、es for screws, bolts and nuts ISO 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 2491, Thin parallel keys and their corresponding keyways (Dimensions in millimetres) ANSI Y14.2M1), Line Conventions and Lettering ANSI/AGM
41、A 90002), Flexible Couplings Potential Unbalance Classification ANSI/AGMA 9002, Bores and Keyways for Flexible Couplings (Inch Series) ANSI/AGMA 9003, Flexible Couplings Keyless Fits 1) American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036, USA.2) American Gear Ma
42、nufacturers Association, 500 Montgomery Street, Suite 350, Alexandria, VA 22314-1560, USA. Copyrighted material for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying prohibited.API Standard 671/ISO 10441 2 ANSI/AGMA 9004, Flexible Cou
43、plings Mass Elastic Properties and other Characteristics (Inch Series) ANSI/AGMA 9104, Flexible Couplings Mass Elastic Properties and other Characteristics (Metric Series) ANSI/AGMA 9112, Bores and Keyways for Flexible Couplings (Metric Series) ANSI/ASME B1.13), Unified inch screw threads, UN and UN
44、R thread form DIN 71904), Interference fits Calculation and design rules 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 centreline and th
45、e centreline of the structure joining the two flexible elements 3.2 angular misalignment single-engagement couplings minor angle between the extensions of two machine-shaft centrelines NOTE If the shaft centrelines do not intersect, a single-engagement coupling is not appropriate. 3.3 assembly balan
46、ce procedure in which a completely assembled coupling is balanced as a unit 3.4 assembly balance check procedure in which an assembled coupling is placed on a balancing machine and the residual unbalance is measured NOTE An assembly balance check can be carried out on a component balanced coupling,
47、or on an assembly-balanced coupling. 3.5 axial displacement change in the relative axial position of the adjacent shaft ends of two coupled machines, usually caused by thermal expansion 3.6 component balance procedure for achieving coupling balance in which the components or factory assembled sub-as
48、semblies are balanced separately before assembly of the coupling 3.7 continuous torque rating coupling manufacturers declared maximum torque that the coupling is capable of transmitting continuously for unlimited periods 3) ASME International, Three Park Avenue, New York, NY 10016-5990, USA. 4) Deut
49、sches Institut fur Normung, Burggrafenstrasse 6, Sresemannallee 15, Berlin, Germany D-10787. Copyrighted material for licensees use only.A00854834 21 Oct 09Copyrighted material for licensees use only.Single user license only, copying prohibited.API Standard 671/ISO 10441 33.8 crown diameter major diameter of the external teeth of a gear-type coupling 3.9 distance between shaft ends DBSE distance from the extreme end of one shaft (including any threaded end) to the extreme end of the next shaft or, in the case of integral flanges, the distance
