1、BRITISH STANDARDBS EN ISO 21049:2004Pumps Shaft sealing systems for centrifugal and rotary pumpsThe European Standard EN ISO 21049:2004 has the status of a British StandardICS 23.080; 23.100.60; 83.140.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g
2、3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Incorporating Corrigendum No. 1BS EN ISO 21049:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 February 2005ISBN 0 580 45370 7Natio
3、nal forewordThe UK participation in its preparation was entrusted to Technical Committee PSE/17, Materials and equipment for petroleum, petrochemical and natural gas industries, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its s
4、ecretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Cata
5、logue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand th
6、e 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 the UK.Summary of pagesThis document comprises a front
7、cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to vii, a blank page, pages 1 to 195 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.This British Standard is the official Engl
8、ish language version of EN ISO 21049:2004, including Corrigendum February 2005. It is identical with ISO 21049:2004.Amendments issued since publicationAmd. No. Date Comments15677 Corrigendum No. 131 July 2006 Note was added to the ISO foreword BSI 2006EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORME
9、N ISO 21049December 2004ICS 23.100.60; 23.080; 83.140.50English versionPumps - Shaft sealing systems for centrifugal and rotary pumps(ISO 21049:2004)Pompes - Dispositifs dtanchit de larbre pour pompescentrifuges et rotatives (ISO 21049:2004)Pumpen - Wellendichtungssysteme fr Kreiselpumpen undrotiere
10、nde Verdrngerpumpen (ISO 21049:2004)This European Standard was approved by CEN on 21 December 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to
11、-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the
12、 responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ir
13、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050
14、Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 21049:2004: EIncorporating corrigendum February 2005I NESO 12:9402004 (E) 2 Foreword The text of ISO 21049:2004 has been prepared by Technical Committee ISO/TC 115 “Pu
15、mps“ of the International Organization for Standardization (ISO) and has been taken over as EN ISO 21049:2004 by Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum and natural gas industries“ the secretariat of which is held by AFNOR. This European Standard sha
16、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. According to the CEN/CENELEC Internal Regulations, the national standards organiz
17、ations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slov
18、enia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 21049:2004 has been approved by CEN as EN ISO 21049:2004 without any modifications. EN ISO 21049:2004NOTE Attention is drawn to the fact that Clause 10.2.3 permits the use of alternative standards (e.g. EN 13445-
19、5) for the non-destructive examination of materials. Reference numberISO 21049:2004(E)OSI 4002INTERNATIONAL STANDARD ISO21049First edition2004-02-01Pumps Shaft sealing systems for centrifugal and rotary pumps Pompes Dispositifs dtanchit de larbre pour pompes centrifuges et rotatives EN ISO 21049:200
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25、evr iiiContents Page Foreword vi Introduction vii 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 3 4 Sealing systems 10 4.1 Seal categories, types and arrangements 10 4.1.1 General. 10 4.1.2 Seal categories 10 4.1.3 Seal types 11 4.1.4 Seal arrangements 11 4.1.5 Seal orientations . 12
26、 4.2 Objectives 12 4.3 Specifying and/or purchasing a sealing system . 12 5 General. 19 5.1 Unit responsibility. 19 5.2 Dimensions 20 6 Design requirements 20 6.1 Common design requirements (all categories) . 20 6.1.1 General information 20 6.1.2 Seal chamber and gland plate . 23 6.1.3 Cartridge sea
27、l sleeves 30 6.1.4 Mating rings. 32 6.1.5 Flexible elements 34 6.1.6 Materials. 34 6.2 Design requirements (category-specific) .38 6.2.1 Category 1 seals 38 6.2.2 Category 2 seals 39 6.2.3 Category 3 seals 40 7 Specific seal configurations 41 7.1 Arrangement 1 seals. 41 7.1.1 Seal sleeves. 41 7.1.2
28、Seal chamber and gland plate . 41 7.2 Arrangement 2 seals. 41 7.2.1 General. 41 7.2.2 Seal sleeves. 42 7.2.3 Seal chamber and gland plates . 42 7.2.4 Contacting wet seals with a liquid buffer fluid (2CW-CW) 43 7.2.5 Seal chamber and gland plates for contacting wet inner seal with a dry-running conta
29、inment seal (2CW-CS) . 43 7.2.6 Seal chamber and gland plates for non-contacting inner seal with a dry-running containment seal (2NC-CS) 44 7.3 Arrangement 3 seals. 44 7.3.1 General. 44 7.3.2 Seal sleeves. 45 7.3.3 Seal chamber and gland plates . 45 7.3.4 Contacting wet seal configurations with a li
30、quid barrier fluid (3CW-FB, 3CW-FF, 3CW-BB) . 45 EN ISO 21049:2004IS:94012 O4002(E) iv I SO 4002 All irthgs ersedevr7.3.5 Standard seal types and arrangements for non-contacting seal configurations with a gas barrier fluid (3NC-FB, 3NC-FF, 3NC-BB) .46 8 Accessories .46 8.1 Auxiliary piping systems 4
31、6 8.2 Mechanical seal flush/cooling systems (Group I)49 8.3 Quench systems (Group II) 50 8.4 Cooling-water systems (Group III).50 8.5 Accessories and auxiliary system components 51 8.5.1 Cyclone separator .51 8.5.2 Flow control orifice .52 8.5.3 Seal flush coolers53 8.5.4 Barrier/buffer fluid reserv
32、oirs 53 8.5.5 Barrier/buffer-fluid selection criteria.57 8.6 Barrier/buffer fluid and seal flush positive-circulating devices .57 8.6.1 General .57 8.6.2 Internal circulating device 57 8.6.3 External circulating pump 57 8.6.4 External seal flush systems .57 8.6.5 Condensate collection reservoir58 8.
33、6.6 Barrier/buffer-gas supply systems58 9 Instrumentation .59 9.1 General .59 9.2 Temperature-indicating gauges.59 9.3 Thermowells.59 9.4 Pressure gauges59 9.5 Switches .60 9.5.1 Alarm, trip and control switches60 9.5.2 Pressure switches.60 9.5.3 Level switches .61 9.5.4 Flow switches 61 9.6 Level i
34、ndicators .61 9.7 Flow instruments.61 9.7.1 Flow indicators 61 9.7.2 Flow meters61 9.7.3 Flow transmitters.61 9.8 Relief valves.61 9.9 Regulators62 9.10 Pressure amplifiers .62 10 Inspection, testing and preparation for shipment .62 10.1 General .62 10.2 Inspection.62 10.3 Testing63 10.3.1 Seal qual
35、ification testing 64 10.3.2 Hydrostatic test for pressure-containing mechanical seal parts and accessories77 10.3.3 Test of job seal by seal manufacturer.78 10.3.4 Air test 78 10.3.5 Test of job seal by pump manufacturer 78 10.4 Preparation for shipment79 11 Data transfer 79 11.1 General .79 11.2 Pr
36、oposal data.80 11.3 Contract data .81 Annex A (informative) Recommended seal selection procedure .85 Annex B (informative) Typical materials standards for seal chamber and mechanical seal components .130 Annex C (normative) Mechanical seal data sheets 137 EN ISO 21049:2004IS:94012 O4002(E) I SO 4002
37、 All irthgs ersedevr vAnnex D (informative) Mechanical seal codes 146 Annex E (normative) Seal and pump vendor interface responsibilities 148 Annex F (informative) Heat generation and heat soak calculations 150 Annex G (normative) Standard flush plans and auxiliary hardware 157 Annex H (informative)
38、 Inspector checklist for all seals. 188 Annex I (normative) Form for mechanical seal qualification test. 189 Annex J (normative) Mechanical seals data requirements form 192 Bibliography . 193 EN ISO 21049:2004IS:94012 O4002(E) vi I SO 4002 All irthgs ersedevrForeword ISO (the International Organizat
39、ion 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 for which a technical committee has been established h
40、as 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 all matters of electrotechnical standardization. Int
41、ernational 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 are circulated to the member bodies for voting. Public
42、ation 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 responsible for identifying any or all such patent ri
43、ghts. ISO 21049 was prepared by Technical Committee ISO/TC 115, Pumps, Subcommittee SC 3, Installation and special applications, in collaboration with Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, SC 6, Processing
44、 equipment and systems. EN ISO 21049:2004IS:94012 O4002(E) I SO 4002 All irthgs ersedevr viiIntroduction This International Standard is based on the accumulated knowledge and experience of manufacturers and users of equipment in the petroleum, natural gas and chemical industries, but its use is not
45、restricted to these industries. Users of this International Standard should be aware that further or differing requirements 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
46、 or engineering solutions for the individual application. This may be particularly appropriate where there is innovative or developing technology. Where an alternative is offered, the vendor should identify any variations from this International Standard and provide details. The purpose of this Inte
47、rnational Standard is to assist purchasers with the selection and operation of mechanical seals for pumps. This International Standard is a stand-alone seal standard and is referenced normatively in ISO 13709. It is applicable to both new and retrofitted pumps, and to pumps other than ISO 13709 pump
48、s (e.g. ASME B73.1, ASME B73.2 and API 676 pumps). In this International Standard, where practical, US Customary units are included in brackets for information. A bullet (null) at the beginning of a clause or subclause indicates that either a decision is required or further information is to be prov
49、ided by the purchaser. This information should be indicated on data sheets or stated in the enquiry or purchase order (see examples in Annex C). EN ISO 21049:2004blankINTENRATIONAL TSANDADR IS:94012 O4002(E)I SO 4002 All irthgs ersedevr 1Pumps Shaft sealing systems for centrifugal and rotary pumps 1 Scope This International Standard specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, fl
