BS 2M 59-1993 Specification for interface of metric couplings 24 cone for aerospace fluid systems《航空航天流体系统用24圆锥形米制连接器接口规范》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS 2M 59:1993 ISO 7319:1992 Specification for Interface of metric couplings, 24 cone, for aerospace fluid systems UDC 621.643.414:629.7.064.2/.3BS 2M 59:1993 This British Standard, having been prepared under the directionof the Aerospace Standards Policy Committee,

2、waspublished under the authorityof the Standards Boardand comes into effect on 15August1993 BSI 12-1999 First published April 1986 Second edition August 1993 The following BSI references relate to the work on this standard: Committee reference ACE/- Draft for comment 91/77454 DC ISBN 0 580 22500 3 C

3、ommittees responsible for this British Standard The preparation of this British Standard was undertaken by the Aerospace Standards Policy Committee (ACE/-) upon which the following bodies were represented: British Airways Department of Trade and Industry (Air Division) Institution of Electrical Engi

4、neers Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBS2M59:1993 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative reference 1 3 Coupling assembly and sealing principl

5、e 1 4 Dimensions 1 Annex A (informative) Bibliography 4 Figure 1 Dimensions 2 Table 1 Dimensions 3 List of references Inside back coverBS 2M 59:1993 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee. It is identic

6、al with ISO7319:1992 Aerospace Fluid systems Interface of 24 cone metric couplings, published by the International Organization for Standardization (ISO). This British Standard supersedes BSM59:1986 which is withdrawn. Cross-reference The Technical Committee has reviewed the provisions of ISO5855-3:

7、1988, to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicat

8、ion. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and m

9、ay have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS2M59:1993 BSI 12-1999 1 1 Scope This International Standard defines the geometry of the interface of removable24 cone couplings for fluid systems in aircraft. The connection with the pipe o

10、f each one of the connecting elements may be of different design. This International Standard specifies the dimensions which allow the interchangeability of the male and female elements and of the nut used for the connection. The dimensions define the maximum volume of the male fitting. 2 Normative

11、reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International

12、Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 5855-3:1988, Aerospace MJ threads Part3: Limit dimensions for fittings for fluid syste

13、ms. 3 Coupling assembly and sealing principle The coupling comprises three elements as follows. a) A female element including a frustum with a cone angle equal to24 , with which the male element comes into contact to provide sealing. The contact line is a circle with a theoretical diameter, E. b) A

14、male element, included inside a shell composed of two frustums connected by a spherical section with which the female element comes into contact to provide sealing. The contact line is a circle with a theoretical diameter, E. c) A nut allowing assembly of the male and female elements of the coupling

15、. 4 Dimensions The dimensions shall be as shown inFigure 1 and given inTable 1.BS 2M 59:1993 2 BSI 12-1999 Key Point a: origin at E/2 from the XX axis Point b: point located at a distance R from point a, on the perpendicular to the line tilted 12 relative to XX and passing through point a Point c: l

16、ocated at B/2 from the XX axis and at a distance P from point a Line cd: tangent drawn from c to the arc of the circle with centre at b and radius R Line ef: tangent tilted 12 50 relative to the XX axis on the arc to the circle with centre at b and radius R. The point of tangency thus obtained is de

17、signated e. NOTEThe profile involves exclusively those machined male elements which do not lose their shape. Nevertheless, the male element may be in the form of a sleeve fitted over the end of the pipe and which, during coupling to the female element, is compressed onto the pipe and changes its sha

18、pe such that the correct profile is obtained. Figure 1 DimensionsBS 2M 59:1993 BSI 12-1999 3 Table 1 Dimensions Dimensions in millimetres DN a N b A B E F G H L M P R S T U V external internal 4g6g 4H5H min. max. max. theoretical c max. min. max. recommended max. d min. min. max. e min. max. min. mi

19、n max. 5 MJ10 1 1,38 1,62 7,1 6,5 5,06 5,26 5,36 12 3,88 7,18 2,58 6,13 0,56 0,92 3,88 2,8 4,7 6 MJ12 1,25 1,38 1,62 8,1 7,5 6,06 6,26 6,36 14 4,38 8,18 2,58 6,13 0,56 0,92 4,38 3,8 4,7 8 MJ14 1,5 1,38 1,62 10,1 9,5 8,06 8,26 8,36 17 4,38 9,18 2,58 6,13 0,56 0,92 4,38 3,8 5,2 10 MJ16 1,5 1,38 1,62 1

20、2,1 11,5 10,06 10,26 10,36 19 4,38 10,18 2,58 6,13 0,56 0,92 4,38 4,1 5,9 12 MJ18 1,5 2,28 2,52 14,5 13,5 12,06 12,26 12,36 22 4,48 9,28 3,48 12,13 0,96 1,32 4,48 4,1 6,4 14 MJ20 1,5 2,28 2,52 16,5 15,5 14,06 14,26 14,36 24 4,48 9,28 3,48 12,13 0,96 1,32 4,48 4,1 6,4 16 MJ22 1,5 2,28 2,52 18,5 17,5

21、16,06 16,26 16,36 27 4,48 9,28 3,48 12,13 0,96 1,32 4,48 4,4 6,1 20 MJ27 1,5 2,28 2,52 22,5 21,5 20,08 20,28 20,38 32 4,48 9,28 3,48 12,13 0,96 1,32 4,48 3,9 6,1 25 MJ33 1,5 2,28 2,52 27,6 26,6 25,08 25,28 25,38 41 4,48 10,28 3,48 13,61 0,96 1,32 4,48 4,2 5,8 32 MJ42 2 2,28 2.52 34,7 33,7 32,1 32,3

22、32,4 46 4,98 11,28 3,48 17,24 0,96 1,32 4,98 4,1 5,9 40 MJ50 2 2,28 2,52 42,7 41,7 40,1 40,3 40,4 60 4,98 11,28 3,48 21,32 0,96 1,32 4,98 4,4 7,6 a Nominal size (outside diameter of the corresponding tube). b Threads are in accordance with ISO5855-3. c Tolerance for the proof gauge: 0,0025 d L min.

23、= S e The radius R shall have a sufficient minimum value in order to prevent a deterioration of the seats during assembly of the male and female elements.BS 2M 59:1993 4 BSI 12-1999 Annex A (informative) Bibliography 1 ISO 5855-1:1988, Aerospace MJ threads Part 1: General requirements.BS2M59:1993 BS

24、I 12-1999 List of references See national foreword.BS 2M 59:1993 ISO 7319:1992 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the internatio

25、nal level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would

26、 be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating serv

27、ice called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for internati

28、onal standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technic

29、al Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive s

30、ubstantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the internationa

31、l standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does

32、not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.