BS EN ISO 21049-2005 Pumps - Shaft sealing systems for centrifugal and rotary pumps《泵 离心泵和旋转泵用轴封系统》.pdf

1、BRITISH STANDARD BS EN ISO 21049:2004 Pumps Shaft sealing systems for centrifugal and rotary pumps The European Standard EN ISO 21049:2004 has the status of a British Standard ICS 23.080; 23.100.60; 83.140.50 Incorporating Corrigendum No. 1BS EN ISO 21049:2004 This British Standard was published und

2、er the authority of the Standards Policy and Strategy Committee on 10 February 2005 ISBN 0 580 45370 7 National 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

3、responsibility to: 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 Catalogue under the section entitle

4、d “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue 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 w

5、ith a British Standard does not of itself confer immunity from legal obligations. 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 intern

6、ational and European developments and promulgate them in the UK. Summary of pages This document comprises a front 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 notic

7、e displayed in this document indicates when the document was last issued. This British Standard is the official English language version of EN ISO 21049:2004, including Corrigendum February 2005. It is identical with ISO 21049:2004. Amendments issued since publication Amd. No. Date Comments 15677 Co

8、rrigendum No. 1 31 July 2006 Note was added to the ISO foreword BSI 2006EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO21049 December2004 ICS23.100.60;23.080;83.140.50 Englishversion PumpsShaftsealingsystemsforcentrifugalandrotarypumps (ISO21049:2004) PompesDispositifsdtanchitdelarbrepourpompes

9、 centrifugesetrotatives(ISO21049:2004) PumpenWellendichtungssystemefrKreiselpumpenund rotierendeVerdrngerpumpen(ISO21049:2004) ThisEuropeanStandardwasapprovedbyCENon21December2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropean Standar

10、dthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcerningsuchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytrans

11、lation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithu

12、ania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformand

13、byanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO21049:2004:E Incorporating corrigendum February 2005I NESO 12:9402004 (E) 2 Foreword The text of ISO 21049:2004 has been prepared by Technical Committee ISO/TC 115 “Pumps“ of the International Organization for Standardization (ISO) and h

14、as 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 shall be given the status of a national standard, either by publication o

15、f 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 organizations of the following countries are bound to implement this European

16、 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, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notic

17、e The text of ISO 21049:2004 has been approved by CEN as EN ISO 21049:2004 without any modifications. ENISO21049:2004NOTE Attention is drawn to the fact that Clause 10.2.3 permits the use of alternative standards (e.g. EN 13445-5) for the non-destructive examination of materials. Reference number IS

18、O 21049:2004(E) OSI 4002INTERNATIONAL STANDARD ISO 21049 First edition 2004-02-01 Pumps Shaft sealing systems for centrifugal and rotary pumps Pompes Dispositifs dtanchit de larbre pour pompes centrifuges et rotatives ENISO21049:2004IS:94012 O4002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt d

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23、tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrENISO21049:2004IS:94012 O4002(E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword vi Introduction vii 1 Scope 1 2 Norma

24、tive 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 4.2 Objectives 12 4.3 Specifying and/or purchasing a sealing syste

25、m . 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 seal sleeves 30 6.1.4 Mating rings. 32 6.1.5 Flexible elements 34 6.1.

26、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 Seal chamber and gland plate . 41 7.2 Arrangement 2 seals. 41 7.2.1

27、 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 containment seal (2CW-CS) . 43 7.2.6 Seal chamber and gland plates for n

28、on-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 liquid barrier fluid (3CW-FB, 3CW-FF, 3CW-BB) . 45 ENISO21049:2004IS:

29、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 46 8.2 Mechanical seal flush/cooling systems (Group I)49 8.3 Quench sy

30、stems (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 reservoirs 53 8.5.5 Barrier/buffer-fluid selection criteria.57 8.6 Barrier/

31、buffer fluid and seal flush positive-circulating devices .57 8.6.1 General .57 8.6.2 Internal circulating device57 8.6.3 External circulating pump 57 8.6.4 External seal flush systems .57 8.6.5 Condensate collection reservoir58 8.6.6 Barrier/buffer-gas supply systems58 9 Instrumentation .59 9.1 Gene

32、ral .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 indicators .61 9.7 Flow instruments.61 9.7.1 Flow indicators 61 9.7.2 F

33、low 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 qualification testing 64 10.3.2 Hydrostatic test for pressure-containing m

34、echanical 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 Proposal data.80 11.3 Contract data .81 Annex A (informative) Recommende

35、d 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 ENISO21049:2004IS:94012 O4002(E) I SO 4002 All irthgs ersedevr vAnnex D (informative) Mechanical seal codes 146 An

36、nex 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) Inspector checklist for all seals. 188 Annex I (normative) Form for mec

37、hanical seal qualification test. 189 Annex J (normative) Mechanical seals data requirements form 192 Bibliography . 193 ENISO21049:2004IS:94012 O4002(E) vi I SO 4002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards b

38、odies (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 has the right to be represented on that committee. International organizati

39、ons, 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. International Standards are drafted in accordance with the rules given in the

40、 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. Publication as an International Standard requires approval by at least 75 % of t

41、he 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 rights. 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 equipment and systems. ENISO21049:2004