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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 14691:1999 ICS 75.
2、180.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Petroleum and natural gas industries Flexible couplings for mechanical power transmission General purpose applications Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c)
3、BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 February 2000 BSI 02-2000 ISBN 0 580 34187 9 BS ISO 14691:1999 Amendments issued since pub
4、lication Amd. No.DateComments National foreword This British Standard reproduces verbatim ISO 14691:1999 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PSE/17, Materials for the petroleum and natural gas industries, which h
5、as the responsibility to: aid enquirers 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
6、 the UK. A list of organizations represented on this committee can be obtained on request 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 Standards Catalogue under the section entitle
7、d International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance wit
8、h a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 26, an inside back cover and a back cover. The BSI copyright notice displayed in this document
9、 indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A Reference number ISO 14691:1999(E) INTERNATIONAL STANDARD ISO 14691 First edition 1999-11-01 Petroleum and natural gas industries Flexible coupli
10、ngs for mechanical power transmission General purpose applications Industries du ptrole et du gaz naturel Accouplements flexibles pour transmission de puissance mcanique Applications dusage gnral Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c) B
11、SI ISO 14691:1999(E) ii Contents Foreword.iii Introductioniv 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Purchasers specification .8 5 Coupling selection and rating9 6 Constructional requirements11 7 Balance.14 8 Materials .16 9 Accessories16 10 Manufacturing quality, inspection, t
12、esting and preparation for shipment 16 11 Vendors data.17 Annex A (informative) Data sheet.19 Annex B (informative) Potential unbalance.21 Annex C (informative) Types of misalignment24 Bibliography26 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (
13、c) BSI ISO 14691:1999(E) iii Foreword ISO (the International Organization for Standardization) is a world-wide 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 interes
14、ted in a subject for 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 C
15、ommission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication
16、as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 14691 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for the petroleum and natural gas industries, Subcommittee SC 6, Processin
17、g equipment and systems. Annexes A, B and C of this International Standard are for information only. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 14691:1999(E) iv Introduction This International Standard is based on the accumulated kn
18、owledge and experience of manufacturers and users of power transmission couplings in the petroleum and natural gas industries, but its use is not restricted to these industries. Users of this International Standard should be aware that further or differing requirements may be needed for individual a
19、pplications. 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 a
20、n 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 (G) at the beginning of a clause, subclause or paragraph indicates that eithe
21、r a decision is required or further information is to be provided by the purchaser. This information or decision should be indicated on the data sheets; otherwise it should be stated in the quotation request (enquiry) or in the order. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 G
22、MT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 14691:1999(E) 1 Petroleum and natural gas industries Flexible couplings for mechanical power transmission General purpose applications 1 Scope 1.1 This International Standard specifies the requirements for couplings for the transmi
23、ssion of power between the rotating shafts of two machines for general purpose applications in the petroleum and natural gas industries. Such applications typically require couplings to transmit power at speeds not exceeding 4 000 r/min, between machines in which the first lateral critical speed is
24、above the running speed range (stiff-shaft machines). It may, by agreement, be used for applications outside these limits. 1.2 This International Standard is applicable to couplings designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts withou
25、t imposing excessive mechanical loading on the coupled machines. Couplings covered include gear (and other mechanical contact types), metallic flexible-element and various elastomeric types. Special types such as clutch, hydraulic, eddy-current, rigid, radial spline and universal joint types, are no
26、t covered. 1.3 This International 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 define criteria for the sele
27、ction of coupling types for specific applications. 1.4 It is recommended that, when users fit new couplings to existing equipment which are different from those originally fitted, they consult the manufacturers of the driving or driven equipment. NOTE 1 In many cases, couplings covered by this Inter
28、national Standard are manufacturers catalogue items. NOTE 2 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 critical to the continued operation of the inst
29、allation (special purpose applications); machines in which the first lateral critical speed is less than the maximum required operating speed (flexible-shaft machines); machines where the rotor dynamics are particularly sensitive to coupling unbalance. 2 Normative references The following normative
30、documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are e
31、ncouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid international standards. IS
32、O 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades, and limit deviations for holes and shafts. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 14691:1999(E) 2 ISO 1940-1:1986, Mechanical vibration Balance
33、quality requirements of rigid rotors Part 1: Determination of permissible residual unbalance. ISO 8821, Mechanical vibration Balancing Shaft and fitment key convention. ISO 10441, Petroleum and natural gas industries Flexible couplings for mechanical power transmission Special purpose applications.
34、AGMA 9002 - A86, March 1986, Bores and keyways for flexible couplings (Inch series) Annex A. 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 Definitions of coupling types 3.1.1 mechanical contact coupling coupling designed to tr
35、ansmit torque by direct mechanical contact between mating parts and accommodate misalignment and axial displacement by relative rocking and sliding motion between the parts in contact NOTE 1 The contacting parts may be metallic or may be made of self-lubricating non-metallic material. NOTE 2 This ca
36、tegory includes gear couplings (see 3.1.1.1). 3.1.1.1 gear coupling coupling designed to transmit torque and accommodate angular misalignment, parallel offset and axial displacement by relative rocking and sliding motion between mating profiled gears 3.1.2 metallic flexible-element coupling coupling
37、 that obtains its flexibility from the flexing of thin metallic discs, diaphragms or links NOTE This category includes the two types given in 3.1.2.1 and 3.1.2.2. 3.1.2.1 metallic diaphragm coupling coupling consisting of one or more metallic flexible elements in the form of thin circular plates tha
38、t are attached to one part of the coupling at their outer diameter and the other part at their inner diameter 3.1.2.2 metallic disc coupling coupling consisting of one or more metallic flexible elements that are alternately attached to the two parts of the coupling, the attachment points being essen
39、tially the same distance from the centreline 3.1.3 elastomeric flexible-element coupling a coupling in which the torque is transmitted through one or several elastomeric elements NOTE This category includes elastomeric shear (3.1.3.1) and elastomeric compression (3.1.3.2) couplings. 3.1.3.1 elastome
40、ric shear coupling coupling in which the torque is transmitted through an elastomeric element which is principally loaded in shear NOTE The element may be in the form of a tyre, a bellows (with one or more convolutions) or a diaphragm. A single such elastomeric element is usually able to accommodate
41、 angular misalignment, parallel offset and axial displacement. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:03:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 14691:1999(E) 3 3.1.3.2 elastomeric compression coupling coupling in which elastomeric inserts, often in the form of bushes or
42、 wedges or one single insert, are located between adjacent parts of the driving and driven halves of the coupling and are principally loaded in compression NOTE The ability of such couplings to accommodate misalignment, particularly of the parallel offset type, is limited. 3.1.4 double-engagement co
43、upling coupling with two planes of flexure NOTE This arrangement enables couplings of certain types, notably gear and metallic flexible-element types, which cannot normally accommodate parallel (or lateral) offset, to do so. 3.1.5 single-engagement coupling coupling with only one plane of flexure NO
44、TE Single-engagement couplings of some types, notably gear and metallic flexible-element types, will not normally accommodate parallel (or lateral) offset misalignment. 3.2 Terms relating to coupling rating 3.2.1 coupling axial reaction force axial force developed within the coupling resulting from
45、the imposed operating conditions NOTE 1 Examples of imposed operating conditions are axial deflection, misalignment, speed, temperature, etc. NOTE 2 The force is a function of the shape and stiffness of the flexible-elements or the sliding friction between the elements of a mechanical contact coupli
46、ng. 3.2.2 coupling continuous rated torque Tc coupling manufacturers declared maximum torque that the coupling will transmit continuously for not less than 25 000 h NOTE 1 It is expressed either as a single value at the coupling rated speed, when simultaneously subjected to the coupling rated maximu
47、m continuous misalignment (both angular misalignment and parallel or lateral offset) and the coupling rated maximum continuous axial displacement, or as an interrelated function of speed, misalignment and axial displacement. NOTE 2 For certain types of coupling, particularly those with elastomeric e
48、lements or inserts, the coupling continuous rated torque may also be a function of the operating temperature. 3.2.3 coupling rated maximum continuous misalignment maximum misalignment (both angular misalignment and parallel or lateral offset) the coupling is able to tolerate continuously for not les
49、s than 25 000 h at the coupling rated speed, when transmitting the coupling continuous rated torque and simultaneously subjected to the coupling rated maximum continuous axial displacement 3.2.4 coupling rated maximum continuous axial displacement maximum axial displacement the coupling is able to tolerate continuously for not less than 25 000 h at the coupling rated speed, when transmitting the coupling continuous rated torque and simultaneously subjected to the coupling rated maximum continuous misalignment 3.2.5 coupling rate
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