ISO-13351-1996.pdf
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1、INTERNATIONAL STANDARD IS0 13351 First edition 1996-06-l 5 Industrial fans - Dimensions Ventilateurs industriels - Dimensions This material is reproduced from IS0 documents under International Organization for Standardization (ISO) Copyright License number IHSIICC11996. Not for resale. No part of th
2、ese IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior written consent of IS0 (Case postale 56, I211 Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the IS0 Licensers members. Re
3、ference number IS0 13351 :I 996(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:42:00 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword IS0
4、 (the international Organization for Standardization) is a worldwide fed- eration of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical c
5、ommittee has been established has the right to be rep- resented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 col- laborates closely with the International Electrotechnical Commission (IEC) on all matters of el
6、ectrotechnical standardization. Draft International Standards adopted by the technical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 13351 was pr
7、epared by Technical Committee lSO/TC 117, industrial fans. 0 IS0 1996 All rights reserved. Unless otherwise specified, no part of this publication may be repro- duced or utilized In any form or by any means, electronic or mechantcal, rncluding photo- copytng and mrcrofilm, without permrssron In writ
8、ing from the publisher. International Organrzation for Standardization Case Postale 56 l CH-1211 Geneva 20 l Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Re
9、sale, 04/22/2007 20:42:00 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 IS0 IS0 13351:1996(E) Introduction This International Standard gives details of circular and rectangular flanges as well as specifying “fan size designation”. For circular flanges, the values specif
10、ied in IS0 6580:1981, General purpose industrial fans - Cir- cular flanges - Dimensions are retained for the next five years in parallel with those given in table 2 of this International Standard. Though not constraining a manufacturers choice of flange details, this In- ternational Standard provide
11、s the opportunity for interchangeability and therefore a reduction in technical obstacles to free trading. Throughout this International Standard, the principal dimensions are based on the rounded values of “preferred” numbers given in IS0 497. III Copyright International Organization for Standardiz
12、ation Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:42:00 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD 0 IS0 IS0 13351:1996(E) Industrial fans - Dimensions 1 Scope This Internati
13、onal Standard specifies size designations for industrial fans and specifies dimensions for the cir- cular and rectangular flanges of general purpose in- dustrial fans as defined in 3.1 .I. It does not apply to cross-flow fans, or fan appliances used for household or similar applications. For circula
14、r flanges, this International Standard pro- vides two different flange series, one for standard casing thicknesses and a second for heavy duty fans as used on board sea-going vessels or in heavy indus- try. In order not to restrict fan designs unduly, only the pitch diameter, hole numbers and hole d
15、iameters are standardized. Flange thickness as well as internal and external flange diameters can be chosen freely within the limits of good engineering practice. 2 Normative references The following standards contain provisions, which, through reference in this text, constitute provisions of this I
16、nternational Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreement based on this International Standard are encouraged to investi- gate the possibility of applying the most recent edi- tions of the standards indicated
17、 below. Members of IEC and IS0 maintain registers of currently valid Inter- national Standards. I SO 3: 1973, Preferred numbers - Series of preferred numbers. IS0 497:1973, Guide to the choice of preferred num- bers and of series containing more rounded values of preferred numbers. 1) To be publishe
18、d. IS0 13349:-l), industrial fans - Terminology. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of this International Standard, the definitions given in IS0 13349 and the followrng defi- nitions apply. 3.1.1 general purpose industrial fan: Fan for which the flange dimensio
19、ns conform to those given in fig- ure 4 and table 2. 3.1.2 heavy duty fan: Fan for which the flange di- mensions are greater and conform to those given in figure 4 and table 3. 3.1.3 nominal impeller tip diameter, D: Diameter of the impeller tip on which the design of the fan is based. 3.2 Symbols a
20、nd abbreviations For the purposes of this International Standard, the following symbols and abbreviations apply: D dl d2 d3 d4 e g 1 N a nominal impeller tip diameter (see figures 1, 2 and 3) actual impeller tip diameter (see figures 1, 2 and 3) pitch circle diameter hole diameter bolt diameter wash
21、er diameter casing thickness hole offset arc length between bolt holes number of holes angle between bolt holes Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 20:42:00 MDTNo rep
22、roduction or networking permitted without license from IHS -,-,- IS0 13351:1996(E) Figure 1 - Impeller of a centrifugal fan 4 Required characteristics Figure 2 - Impeller of an axial-flow fan 4.1 General This International Standard adopts the Renard R 20 Series as given in IS0 497 as the nominal dim
23、ensions for impeller tip diameters, inside diameters of circular flanges and the inside lengths of the sides of rectan- gular flanges. It takes into account the maximum casing thicknesses likely to be used for general pur- pose industrial fans as well as typical manufacturing tolerances representati
24、ve of “good practice”. The dimensions of circular and rectangular flanges are given in sizes which correspond to nominal diameters from 100 mm to 2 000 mm. In many cases, in the smaller sizes, below about 200 mm, flange details are determined by the customers specification. However, where this is no
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