1、 Reference numberISO 14469-2:2007(E)ISO 2007INTERNATIONAL STANDARD ISO14469-2First edition2007-12-15Road vehicles Compressed natural gas (CNG) refuelling connector Part 2: 20 MPa (200 bar) connector, size 2 Vhicules routiers Connecteur de remplissage en gaz naturel comprim (GNC) Partie 2: Connecteur
2、 20 MPa (200 bar), taille 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 14469-2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordanc
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5、 Every care 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. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise spe
6、cified, no part of this publication may 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
7、Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reservedCopyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction
8、 or networking permitted without license from IHS-,-,-ISO 14469-2:2007(E) ISO 2007 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references 1 3 Terms and definitions .2 4 General construction requirements.2 5 Nozzles3 6 Standard receptacle dimensions .4 7 Rece
9、ptacles 4 8 Instructions 6 9 Marking .6 10 Tests7 10.1 General requirements7 10.2 User interface.7 10.3 Impact resistance.8 10.4 Receptacle protective caps 8 10.5 Leakage at room temperature 8 10.6 Valve operating handle .9 10.7 Abnormal loads9 10.8 Rocking/twisting 10 10.9 Mounting hardware torque
10、.11 10.10 Low and high temperatures11 10.11 Durability 12 10.12 Hydrostatic strength15 10.13 Corrosion resistance.15 10.14 Deformation15 10.15 Non-igniting evaluation.16 10.16 Pressure-tight protective cap (PTPC)16 Annex A (informative) Nozzle characteristics 20 Annex B (informative) Manufacturing a
11、nd production test plan 21 Annex C (normative) Receptacle test fixture .22 Bibliography 24 Copyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 14469-2:2007(E) iv ISO 200
12、7 All rights reservedForeword ISO (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 committees. Each member body interested in a
13、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 International Electrotechnical Commission
14、 (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical com
15、mittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the 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
16、 be held responsible for identifying any or all such patent rights. ISO 14469-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 25, Vehicles using gaseous fuels. ISO 14469 consists of the following parts, under the general title Road vehicles Compressed natural gas (CNG
17、) refuelling connector: Part 1: 20 MPa (200 bar) connector Part 2: 20 MPa (200 bar) connector, size 2 Part 3: 25 MPa (250 bar) connector Copyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without licen
18、se from IHS-,-,-ISO 14469-2:2007(E) ISO 2007 All rights reserved vIntroduction This part of ISO 14469 was developed for use in the examination, testing and certification of newly produced compressed natural gas (CNG) vehicle fuelling nozzles and receptacles. As such, it applies only to the nozzles a
19、nd receptacles used in CNG fuelling systems, and not to the system itself. A nozzle certified to this part of ISO 14469 will be functionally compatible from a safety and performance perspective with all listed receptacles of compatible profile and system pressure. Similarly, a certified receptacle w
20、ill be functionally compatible from a safety and performance perspective with all listed nozzles of compatible profile and system pressure. As there may eventually be many different kinds of nozzles and receptacles available from a variety of manufacturers which, for safety reasons, all need to be c
21、ompatible with one another, this part of ISO 14469 specifies a series of receptacle profiles. These standard profiles incorporate the design specifications (mating materials, geometry and tolerances) that may be considered in the certification of a submitted nozzle or receptacle. This part of ISO 14
22、469 refers only to one working pressure and one application. Other working pressures and applications are under consideration for the future. The construction and performance of nozzles and receptacles are based on the observation that three main parameters listed below affect user safety and system
23、 compatibility. a) Working pressure: all nozzles and receptacles are designed to have a working pressure of 25 MPa1). b) Design life: since frequency of use will differ with the nozzle/receptacle application (i.e. public sector, fleet employment and residential), all receptacles will be tested at 10
24、 000 connect/disconnect cycles for compliance with this part of ISO 14469. In addition, all nozzles will be tested according to the following frequency use classifications, as applicable: 1) class A nozzle, specifying high frequency use, with a cycle life of 100 000 and equating to approximately 100
25、 fills per day for three years; 2) class B nozzle, specifying medium frequency use, with a cycle life of 20 000 and equating to approximately 10 fills per day for five years. c) Training: operator training required is in accordance with national requirements. 1) 1 MPa = 10 bar. Copyright Internation
26、al Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking pe
27、rmitted without license from IHS-,-,-INTERNATIONAL STANDARD ISO 14469-2:2007(E) ISO 2007 All rights reserved 1Road vehicles Compressed natural gas (CNG) refuelling connector Part 2: 20 MPa (200 bar) connector, size 2 1 Scope This part of ISO 14469 applies to compressed natural gas (CNG) vehicle nozz
28、les and receptacles, constructed entirely of new, unused parts and materials for which there is a demand, in particular for large CNG urban buses of refuelling times equivalent to those of urban buses driven by conventional diesel engines. The proposed connector, size 2, offers a larger cross sectio
29、n than the connector in accordance with ISO 14469-1 and, therefore, permits refuelling of the vehicles within significantly shorter time periods. Studies have shown that the proposed connector, size 2, offers more than twice the mass flow of the connectors specified in ISO 14469-1. CNG fuelling conn
30、ection nozzles consist of the following components, as applicable: receptacle and protective cap (mounted on vehicle) (see Clause 7); nozzle (see Clause 5). This part of ISO 14469 applies only to devices which have a service pressure of 20 MPa referred to as C200 receptacle, see 9.2 c). This part of
31、 ISO 14469 applies to devices with standardized mating components (see 5.8 and 7.7). This part of ISO 14469 applies to connectors that prevent natural gas vehicles from being fuelled by dispenser stations with service pressures higher than the vehicle, and allow natural gas vehicles to be fuelled by
32、 dispenser stations with service pressures equal to or lower than the vehicle fuel system service pressure. This part of ISO 14469 is applicable to compressed natural gas in accordance with ISO 15403. All references to pressures throughout this part of ISO 14469 are considered to be gauge pressures
33、unless otherwise specified. The selection of the appropriate standardized connector is agreed between the vehicle manufacturer and the customer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition ci
34、ted applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 1817, Rubber, vulcanized Determination of the effect of liquids Copyright International
35、 Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 14469-2:2007(E) 2 ISO 2007 All rights reservedISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 15501-1, Road vehicle
36、s Compressed natural gas (CNG) fuel systems Part 1: Safety requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 dry air air with moisture content such that the dew point of the air at the required test pressure is at least 11 C below
37、the ambient test temperature 3.2 hydrostatic pressure pressure to which a component is taken to verify the structural strength of the component 3.3 working pressure maximum pressure that a CNG refuelling connector can be expected to withstand in actual service 3.4 service pressure settled pressure o
38、f 20 MPa at a uniform gas temperature of 15 C 3.5 positive locking means feature which requires actuation of an interlocking mechanism to allow connection/disconnection of the nozzle from the receptacle 3.6 CNG refuelling nozzle CNG nozzle device which permits quick connection and disconnection of f
39、uel supply hose to the CNG receptacle in a safe manner 3.7 CNG refuelling receptacle receptacle device connected to a vehicle or storage system which receives the CNG refuelling nozzle and permits safe transfer of fuel 3.8 CNG refuelling connector connector joined assembly of CNG refuelling nozzle a
40、nd receptacle 4 General construction requirements 4.1 CNG nozzles and receptacles manufactured in accordance with this part of ISO 14469 shall be designed in accordance with reasonable concepts of safety, durability and maintainability. NOTE Nozzles and receptacles are both referred to as devices in
41、 this part of ISO 14469. 4.2 CNG nozzles and receptacles shall be well fitted and manufactured in accordance with good engineering practice. All construction requirements may be met by either the construction specified in this part of ISO 14469 or another construction that gives at least equivalent
42、performance. Copyright International Organization for Standardization Provided by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 14469-2:2007(E) ISO 2007 All rights reserved 34.3 CNG nozzles and receptacles shall be designed to minim
43、ize the possibility of incorrect assembly, designed to be secure against displacement, distortion, warping or other damage, and constructed to maintain operational integrity under normal and reasonable conditions of handling and usage. 4.4 CNG nozzles and receptacles shall be manufactured of materia
44、ls suitable and compatible for use with compressed natural gas at the pressure and the temperature ranges to which they will be subjected. The minimum temperature range shall be selected by the manufacturer between the following ranges: 40 C to 85 C; 20 C to 120 C. 4.5 CNG nozzles and receptacles co
45、nstructed of brass shall use brass alloys with a copper mass content u 70 %. This ensures proper material compatibility with all the constituents of natural gas. 4.6 Separate external three-way valves shall be constructed and marked so as to indicate clearly the open, shut and vent positions. 4.7 CN
46、G nozzles and receptacles shall be operated either to connect or disconnect without the use of tools. 4.8 The receptacle shall be mounted on the vehicle in compliance with ISO 15501-1. 4.9 Jointing components shall provide gas-tight sealing performance. 4.10 For quick fuelling, the cross-sections of
47、 all piping and fittings on both the vehicle and the filling station shall be optimized in order to make optimum use of the larger coupling specified in this part of ISO 14469. 5 Nozzles 5.1 Nozzles shall be in accordance with one of the two types listed below (see also Annex A). a) Type 1 nozzle, f
48、or use with dispensing hoses that remain fully pressurized at dispenser shut-down: the nozzle shall not allow gas to flow until a positive connection has been achieved. The nozzle shall be equipped with an integral valve or valves, incorporating an operating mechanism which first stops the supply of gas and safely vents the trapped gas before allowing the disconnection of the nozzle from the receptacle. The operating mechanism shall ensure the vent valve is in the open position before the release mechanism can be operated, and the gas located between the nozzle shu
