Special-purposeCouplingsfor Petroleum Chemical and GasIndustry Services APISTANDARD671 FIFTHEDITION AUGUST2020 API American Petroleum Institute
Special Notes state and federal laws and regulations should be reviewed. API publications necessarily address problems of a general nature. With respect to particular circumstances local. obligations under local state or federal laws. equiptheir employeesand others exposedconcerninghealth and safetyrisks and precautions norundertaking their data sheet. conditions should be obtained from the employer the manufacturer or vendor of thatmaterial or the material safety API standards are publishedto facilitate thebroadavailabityf provensoundengineering andperatingpracties. These standards are not intended to obviate the need for applying sound engineering judgment regarding when and where these standards should be used. The formulation and publication of API standards is not intended in any way Any manufacturer marking equipment ormaterials in conformance with the marking requirements of an API standard issolelyresponsibleforplying withal the applicablerequirementsofthat standard.API doesnotrepresent warrant or guarantee that such products do in fact conform to the applicable API standard. meanslectricmcaicatopingecordingrtwiswihutriwrittenissionfrmtublis Allrightsreserved.No part of this work may be reproduced translated stored in a retrieval system or transmitted by any Contact the Publisher API Publishing Services 200 Massachusetts Avenue NW Suite 100 Washington DC 200015571 Copyright @ 2020 American Petroleum Institute
Foreword NothingcontainedianyPipublicationistobeconstruedasgrantinganyightbymliationrtheiseforte manufacturealrfanythodpratusrrdutcvredbyltersatenethrhouldan contained in the publication be construed as insuring anyone against liabityforintringement of letters patent. The verbal forms used to express the provisions in this document are as follows. Shall: As used in a standard shall' denotes a minimum requirement to conform to the standard. Should: As used in a standard “should’ denotes a remendation or that which is advised but not required to conform to the standard. May: As used in a standard *may denotes a course of action permissible within the limits of a standard. Can:As used in a standard candenotes a statement of possiblity or capabity This document was producedunderAPIstandardizationproceduresthatensure appropriatenotiicationand participation in the developmental process and is designated as an APi standard. Questions concerning the interpretation of the material published herein should also be addressed to the director. Generally API standards are reviewed and revised reaffirmed or withdrawn at least every five years. A one-time extension of up to twoyearsmaybe added tothisreviewcycle. Status of the publication can be ascertained from the API Standards Department telephone (202) 682-8000. A catalog of API publications and materials is published annually by API 200 Massachusetts Avenue Suite 1100 Washington DC 20001. Suggested revisions are invited and should be submited to the Standards Deparment APl 200 Massachusetts Avenue Suite 1100 Washington DC 20001 standards@.
Contents Page 1 Scope. ..1 2 Normative References. 1 3 Terms Definitions Acronyms and Abbreviations. 2 3.1 Terms and Definitions. 2 3.2 Acronyms and Abbreviations 8 4 Requirements. 9 4.1 Units of Measure.. 6 4.2 Statutory Requirements. 9 5 Coupling Selection. .9 9 Coupling Design. 11 7 Coupling Ratings . 15 8 Coupling Requirements. 16 8.1 Metallic Flexible-element Couplings 16 8.2 Machining.. 17 8.3 Spacer. 17 8.4 Hub Type... 17 8.5 IntegralFlanges. 17 8.6 Hubs 17 8.7 Iding Adapter(SoloPlate). 19 8.8 Moment Simulator.. 20 8.9 ComponentFitTolerancesandPotential nbalance Calculations. 20 8.10 Fasteners(Including Studs). 21 8.11 Electrical Insulation.. 21 8.12 Dynamic.. 21 9 Balance. 22 9.1 General. 22 9.2 Balancing Methods. 23 Balance Criteria. 25 9.4 Trim Balance Holes. 8 10 Materials 29 11 Accessories 29 11.1 Coupling Guards 29 11.2 Special Tools. 29 11.3 Torque Measuring System(s) 30 12 ManuatntyningndPrrati 31 12.1 Manufacturing Quality... 12.2 Inspection and Testing 31 12.3 Inspection 32 12.4 Testing. 33 12.5 Preparation for Shipment. 33
API 671 2020 石油、化工和天然气行业服务的特殊用途联轴器（英文版）.pdf
