1、Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system componentsPart 11: Excess flow valveBS ISO 1261911:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/
2、natural gas blends fuel system components Part 11: Excess flow valveVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 11: Valve de limitation de dbitINTERNATIONAL STANDARDISO12619-11First edition2017-08Reference n
3、umberISO 12619-11:2017(E)National forewordThis British Standard is the UK implementation of ISO 1261911:2017.The UK participation in its preparation was entrusted to Technical Committee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committee can be
4、 obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 94693 6ICS 43.060.40Complianc
5、e with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 1261911:2017 ISO
6、 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 11: Excess flow valveVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 11: Valve de limitation de d
7、bitINTERNATIONAL STANDARDISO12619-11First edition2017-08Reference numberISO 12619-11:2017(E)BS ISO 1261911:2017ISO 12619-11:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publicatio
8、n may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of
9、 the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 1261911:2017ISO 12619-11:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAl
10、l rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested f
11、rom either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 12619-11:2017(E)Foreword iv1 Scope . 12 Normative referenc
12、es 13 Terms and definitions . 14 Marking 25 Construction and assembly . 36 Tests . 36.1 Applicability 36.2 Hydrostatic strength 36.3 Leakage 46.4 Excess torque resistance 46.5 Bending moment . 46.6 Continued operation 46.7 Operation . 46.8 Pressure impulse . 4Bibliography 6 ISO 2017 All rights reser
13、ved iiiContents PageBS ISO 1261911:2017ISO 12619-11:2017(E)ForewordISO (the International Organization 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 committe
14、es. 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Inte
15、rnational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the dif
16、ferent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO
17、shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this docu
18、ment is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Or
19、ganization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list of all parts in the ISO 12619 serie
20、s can be found on the ISO website.iv ISO 2017 All rights reservedBS ISO 1261911:2017ISO 12619-11:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normal
21、ly 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the
22、 work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the d
23、ifferent approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this docum
24、ent may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .o
25、rg/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as informati
26、on about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fue
27、ls.A list of all parts in the ISO 12619 series can be found on the ISO website.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 12619-11:2017(E)Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 11: Excess flow valve1 ScopeThis docu
28、ment specifies tests and requirements for the excess flow valve, a compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system component intended for use on the types of motor vehicles defined in ISO 3833.It is applicable to vehicles using CGH2in accordance with ISO 14687-1 or ISO
29、14687-2 and hydrogen/natural gas blend using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-2. It is not applicable to the following:a) liquefied hydrogen (LH2) fuel system components;b) fuel containers;c) stationary gas engines;d) container mounting hardware;e) electronic fuel manageme
30、nt;f) refuelling receptacles;g) fuel cell vehicles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests.NOTE 2 All references to pressure in this document a
31、re considered gauge pressures unless otherwise specified.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references,
32、the latest edition of the referenced document (including any amendments) applies.ISO 12619-1, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 1: General requirements and definitionsISO 12619-2, Road vehicles Compressed gaseous hydrogen (CGH
33、2) and hydrogen/natural gas blend fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12619-1 and the following apply. ISO 2017 All rights reserved 1BS ISO 1261911:2017ISO 12619-11:2017(E)
34、ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1internal excess flow valveexcess flow valve installed insi
35、de the cylinder or cylinder valve3.2external excess flow valveexcess flow valve installed outside the cylinder or cylinder valve3.3shut-off type excess flow valveexcess flow valve that stops flow when in the closed position3.4flow-limiter type excess flow valveexcess flow valve that limits flow when
36、 activatedNote 1 to entry: The device resets automatically when the excess flow condition is no longer present.3.5activation pressuredifferential pressure flow or other condition specified by the manufacturer at which the excess flow valve is activated4 MarkingMarking of the component shall provide
37、sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the operating specifications (working pressure, temperature range, excess flow valve type, activation flow or P, maximum flow when activated).
38、The following additional markings are recommended: the direction of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document
39、, i.e. ISO 12619-11:2017.This information can be provided by a suitable identification code on at least one part of the component when it consists of more than one part.2 ISO 2017 All rights reservedBS ISO 1261911:2017ISO 12619-11:2017(E)ISO and IEC maintain terminological databases for use in stand
40、ardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1internal excess flow valveexcess flow valve installed inside the cylinder or cylinder valve3.2external excess flow valve
41、excess flow valve installed outside the cylinder or cylinder valve3.3shut-off type excess flow valveexcess flow valve that stops flow when in the closed position3.4flow-limiter type excess flow valveexcess flow valve that limits flow when activatedNote 1 to entry: The device resets automatically whe
42、n the excess flow condition is no longer present.3.5activation pressuredifferential pressure flow or other condition specified by the manufacturer at which the excess flow valve is activated4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a)
43、the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the operating specifications (working pressure, temperature range, excess flow valve type, activation flow or P, maximum flow when activated).The following additional markings are recommended: the directi
44、on of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-11:2017.This information can be provided by a
45、 suitable identification code on at least one part of the component when it consists of more than one part.2 ISO 2017 All rights reserved ISO 12619-11:2017(E)5 Construction and assemblyThe excess flow valve shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests
46、 specified in Clause 6. Tolerances should follow the specifications of ISO 12619-2.6 Tests6.1 ApplicabilityThere are many types of excess flow valves available. This document provides requirements for two different designs: internal and external excess flow valves. A valve of either design could be
47、one of two different types: shut-off or flow-limiter. A shut-off valve should have a means of resetting after activation. As excess flow valve designs vary, so will the tests required.The function of an excess flow valve can be achieved in other ways. For example, instead of using a mechanical devic
48、e, an electronic system can be adopted to ensure the closing or limiting of the gas flow from the cylinder in an accident.The tests required to be carried out are indicated in Table 1.Table 1 Applicable testsTest method ApplicableTest procedure as required by ISO 12619-2Specific test requirements of
49、 this documentHydrostatic strength X X X (see 6.2)Leakage X X X (see 6.3)Excess torque resistance X X X (see 6.4)Bending moment X X X (see 6.5)Continued operation X X X (see 6.6)Corrosion resistance X X Oxygen ageing X X Ozone ageing X X Heat ageing X X Automotive fluids XX (only for external excess flow valve)Non-metallic material immersion X X Vibration resistance X X Brass material compatibility X X Operation X X (see 6.7)Pressure impulse X X (see 6.8)6.
