1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58connector Part 3: 25 MPa (250 bar) connectorICS 43.060.40Road vehicles Compressed natural gas (CNG)
2、 refuelling BRITISH STANDARDBS ISO 14469-3:2006BS ISO 14469-3:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006ISBN 0 580 48732 6request to its secretary.Cross-referencesThe British Standards which implement internatio
3、nal publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all
4、 the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a
5、blank page, pages 1 to 24, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on this committee can be obtained on present t
6、o the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.National forewordThis British Standard reproduces verbatim ISO 14469-
7、3:2006 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee GSE/40, Gas supply equipment for natural gas vehicles, which has the responsibility to: aid enquirers to understand the text;Reference numberISO 14469-3:2006(E)INTERNATI
8、ONAL STANDARD ISO14469-3First edition2006-07-15Road vehicles Compressed natural gas (CNG) refuelling connector Part 3: 25 MPa (250 bar) connector Vhicules routiers Connecteur de remplissage en gaz naturel comprim (GNC) Partie 3: Connecteur 25 MPa (250 bar) BS ISO 14469-3:2006ii iiiContents Page Fore
9、word iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 General construction requirements 2 5 Nozzles. 3 6 Standard receptacle dimensions 4 7 Receptacles . 6 8 Instructions . 6 9 Marking 7 10 Tests. 7 10.1 General requirements. 7 10.2 User interface 8 10.3 Impact r
10、esistance 8 10.4 Receptacle protective caps . 9 10.5 Leakage at room temperature . 9 10.6 Valve operating handle. 10 10.7 Abnormal loads. 10 10.8 Rocking/Twisting 11 10.9 Mounting hardware torque 12 10.10 Low and high temperatures. 12 10.11 Durability . 13 10.12 Hydrostatic strength. 17 10.13 Corros
11、ion resistance 17 10.14 Deformation. 18 10.15 Non-igniting evaluation 18 10.16 Pressure-tight protective cap (PTPC). 18 Annex A (informative) Nozzle characteristics . 21 Annex B (informative) Manufacturing and production test plan . 22 Annex C (normative) Receptacle test fixture. 23 BS ISO 14469-3:2
12、006iv Foreword 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 subject for whi
13、ch 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 (IEC) on all m
14、atters 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 committees are cir
15、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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held respon
16、sible for identifying any or all such patent rights. ISO 14469-3 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) refuelling co
17、nnector: Part 1: 20 MPa (200 bar) connector Part 2: 20 MPa (200 bar) connector Size 2 Part 3: 25 MPa (250 bar) connector BS ISO 14469-3:2006vIntroduction This part of ISO 14469 was developed for use in the examination, testing and certification of newly produced compressed natural gas (CNG) vehicle
18、fuelling nozzles and receptacles, and as such, applies only to the nozzles and 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
19、 compatible profile and system pressure. Similarly, a certified receptacle will 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 nozzle and receptacle available f
20、rom a variety of manufacturers which, for safety reasons, must all be compatible 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) which may be considered in th
21、e certification of a submitted nozzle or receptacle. This part of ISO 14469 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 observati
22、on that three main parameters affect user safety and system compatibility. a) Working pressure All nozzles and receptacles are designed to have a working pressure of 31,5 MPa (315 bar). b) Design life Frequency of use is the second parameter to be considered. Since frequency of use will differ with
23、the nozzle/receptacle application (i.e. public sector, fleet employee and residential), all receptacles will be tested at 10 000 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
24、applicable: 1) class A nozzle, specifying high frequency use, with a cycle life of 100 000 and equating to approximately 100 fills per day for three years; 2) class B nozzle, specifying medium frequency use, with a cycle life of 20 000 cycles and equating to approximately 10 fills per day for five y
25、ears. c) Training Operator training required is in accordance with national requirements. BS ISO 14469-3:2006blank1Road vehicles Compressed natural gas (CNG) refuelling connector Part 3: 25 MPa (250 bar) connector 1 Scope 1.1 This part of ISO 14469 applies to compressed natural gas (CNG) vehicle noz
26、zles and receptacles hereinafter referred to as devices, constructed entirely of new, unused parts and materials. CNG fuelling connection nozzles consist of the following components, as applicable: a) receptacle and protective cap (mounted on vehicle) (see Clause 7); b) nozzle (see Clause 5). 1.2 Th
27、is part of ISO 14469 applies to devices which have a service pressure of 250 bar, hereinafter referred to as B250 see 9 a) 3). This part of ISO 14469 refers only to a service pressure of 250 bar. 1.3 This part of ISO 14469 applies to devices with standardized mating components (see 5.8 and 7.7). 1.4
28、 This part of ISO 14469 applies to connectors which: 1) prevent natural gas vehicles from being fuelled by dispenser stations with service pressures higher than that of the vehicle; 2) allow natural gas vehicles to be fuelled by dispenser stations with service pressures equal to or lower than the ve
29、hicle fuel system service pressure. 1.5 This part of ISO 14469 is applicable to compressed natural gas in accordance with ISO 15403. 1.6 All references to pressures (bar) throughout this part of ISO 14469 are to be considered gauge pressures unless otherwise specified. 2 Normative references The fol
30、lowing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 188, Rubber, vulcanized or thermoplastic Accelerated
31、 ageing or heat-resistance tests ISO 1817:1985, Rubber, vulcanized Determination of the effect of liquids ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 15403, Natural Gas Designation of the quality of natural gas for use as a compressed fuel for vehicles ISO 15501-1, Road
32、vehicles Compressed natural gas (CNG) fuel systems Part 1: Safety requirements BS ISO 14469-3:20062 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 pres
33、sure is at least 11 C below 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
34、 pressure settled pressure of 25 MPa (250 bar) at a uniform gas temperature of 15 C 3.5 positive locking means feature that requires actuation of an interlocking mechanism to allow connection/disconnection of the nozzle from the receptacle 3.6 CNG refuelling nozzle device that permits quick connecti
35、on and disconnection of fuel supply hose to the CNG receptacle in a safe manner, hereafter referred to as CNG nozzle 3.7 CNG refuelling receptacle device connected to a vehicle or storage system, which receives the CNG refuelling nozzle and permits safe transfer of fuel, hereafter referred to as rec
36、eptacle 3.8 CNG refuelling connector joined assembly of CNG nozzle and receptacle, hereafter referred to as connector 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
37、 safety, durability and maintainability. 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 l
38、east equivalent performance. 4.3 CNG nozzles and receptacles shall be: designed to minimize the possibility of incorrect assembly; designed to be secure against displacement, distortion, warping or other damage; constructed to maintain operational integrity under normal and reasonable conditions of
39、handling and usage. BS ISO 14469-3:200634.4 CNG nozzles and receptacles shall be manufactured from materials suitable and compatible for use with compressed natural gas at the pressure and the temperature ranges to which it will be subjected (see 1.6). The minimum temperature range shall be selected
40、 by the manufacturer between the following ranges: 40 C to 85 C 20 C to 120 C 4.5 CNG nozzles and receptacles constructed 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 thre
41、e-way valves shall be constructed and marked so as to indicate clearly the open, shut and vent positions. 4.7 CNG nozzles and receptacles shall be operated to connect and disconnect without the use of tools. 4.8 The receptacle shall be mounted on the vehicle in compliance with ISO 15501-1. 4.9 Joint
42、ing components shall provide gas-tight sealing performance. 5 Nozzles 5.1 Nozzles shall be one of the three types according to a), b) and c). See also Annex A. a) Type 1: is a nozzle for use with dispensing hoses that remain fully pressurized at dispenser shutdown. The nozzle shall not allow gas to
43、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 disconnection of the nozzle from the receptacle. The operating
44、mechanism shall ensure the vent valve is in the open position before the release mechanism can be operated and that the gas located between the nozzle shut-off valve and the receptacle check valve is safely vented prior to nozzle disconnection (see 10.2). b) Type 2: is a nozzle for use with dispensi
45、ng hoses that remain fully pressurized at dispenser shutdown. A separate three-way valve connected directly, or indirectly, to the inlet of the nozzle is required to safely vent trapped gas prior to nozzle disconnection. The nozzle shall not permit the flow of gas if unconnected. Venting is required
46、 prior to disconnection of the nozzle (see 10.2). c) Type 3: is a nozzle for use with dispensing hoses which are automatically depressurized 0,5 MPa (5 bar) and below at dispenser shutdown (see 10.2). In addition, nozzles shall be classified in terms of cycle life as follows: class A, specifying hig
47、h frequency use, with a cycle life of 100 000; class B, specifying low frequency use, with a cycle life of 20 000. 5.2 Venting or de-pressurization of all nozzle types is required prior to disconnection. Disconnection of all nozzles shall be able to be accomplished in accordance with 10.2. 5.3 The m
48、ethod for attaching the nozzle to the fuel dispensing system hose shall not rely on the joint threads between the male and female threads for sealing (e.g. conical threads). BS ISO 14469-3:20064 5.4 The three-way valve exhaust port of Type 1 and Type 2 nozzles shall be protected from the ingress of
49、foreign particles and fluid which would hamper the operation of the valve. 5.5 The portions of a nozzle which are held by the user for connection or disconnection may be thermally insulated. 5.6 A Type 1 nozzle shall bear a marking in accordance with Clause 9, indicating the direction of the open and shut operation of the actuating mechanism, if necessary. 5.7 The interface surface of the nozzle shall be constructed of material having a hardness 75 Rockwell B (HRB 75) and shall be non-spa
