ISO-21049-2004.pdf
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1、 Reference number ISO 21049:2004(E) ISO 2004 INTERNATIONAL 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 Copyright International Organization for Standardization Prov
2、ided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 00:53:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21049:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adob
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5、 has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may
6、be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. +
7、 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale,
8、 04/03/2007 00:53:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21049:2004(E) ISO 2004 All rights reserved iii Contents Page Forewordvi Introduction vii 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 3 4 Sealing systems 10 4.1 Seal categories, types
9、and arrangements10 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 system . 12 5 General. 19 5.1 Unit responsibility. 19 5.2 Dimensions 20 6 Design requirements 20 6.1 C
10、ommon 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 6.1.6 Materials. 34 6.2 Design requirements (category-specific). 38 6.2.1 Category 1 seals 38 6.2.2 C
11、ategory 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 General. 41 7.2.2 Seal sleeves. 42 7.2.3 Seal chamber and gland plates . 42 7.2.4 Contacting wet
12、 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 non-contacting inner seal with a dry-running containment seal (2NC-CS) 44 7.3 Arrangement 3 seals.
13、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 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employe
14、es/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 00:53:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21049:2004(E) iv ISO 2004 All rights reserved 7.3.5 Standard seal types and arrangements for non-contacting seal configurations with a gas barrier fluid
15、(3NC-FB, 3NC-FF, 3NC-BB) .46 8 Accessories .46 8.1 Auxiliary piping systems46 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 contr
16、ol 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/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
17、External seal flush systems.57 8.6.5 Condensate collection reservoir58 8.6.6 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
18、 switches.60 9.5.3 Level switches.61 9.5.4 Flow switches61 9.6 Level indicators.61 9.7 Flow instruments.61 9.7.1 Flow indicators61 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
19、10.1 General .62 10.2 Inspection.62 10.3 Testing63 10.3.1 Seal qualification testing64 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 manufacturer78 10.4 Prepar
20、ation for shipment79 11 Data transfer 79 11.1 General .79 11.2 Proposal 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 s
21、eal data sheets 137 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 00:53:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21049:2004(E) ISO
22、 2004 All rights reserved v Annex 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 (inform
23、ative) 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 Copyright International Organization for Standardization Provided by IHS under license with ISO Licens
24、ee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 00:53:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21049:2004(E) vi ISO 2004 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation o
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