1、BSI Standards PublicationBS ISO 12614-6:2014Road vehicles Liquefiednatural gas (LNG) fuel systemcomponentsPart 6: Pressure regulatorBS ISO 12614-6:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12614-6:2014.The UK participation in its preparation was entr
2、usted to TechnicalCommittee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its cor
3、rectapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77152 1ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strateg
4、y Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 12614-6:2014 ISO 2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 6: Pressure regulatorVhicules routiers quipements pour vhicules utilisant le gaz naturel liqufi (GNL) comme combustible P
5、artie 6: Rgulateur de pressionINTERNATIONAL STANDARDISO12614-6First edition2014-07-01Reference numberISO 12614-6:2014(E)BS ISO 12614-6:2014ISO 12614-6:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publicati
6、on 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 o
7、f the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 12614-6:2014ISO 12614-6:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative referenc
8、es 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Test 26.1 Applicability 26.2 Hydrostatic strength 36.3 External leakage . 36.4 Continued operation 3Bibliography 4BS ISO 12614-6:2014ISO 12614-6:2014(E)ForewordISO (the International Organization for Standardization) is a wor
9、ldwide 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 which a technical committee has been established has the right to be represented on
10、 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 matters of electrotechnical standardization.The procedures used to develop this d
11、ocument 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 different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Direc
12、tives, 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 shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the develo
13、pment 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 document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO s
14、pecific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicle
15、s, Subcommittee SC 25, Vehicles using gaseous fuels.ISO 12614 consists of the following parts, under the general title Road vehicles Liquefied natural gas (LNG) fuel system components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Check valve Part
16、4: Manual valve Part 5: Tank pressure gauge Part 6: Pressure regulator Part 7: Pressure relief valve Part 8: Excess flow valve Part 9: Gas-tight housing and ventilation hose Part 10: Rigid fuel line in stainless steel Part 11: Fittings Part 12: Rigid fuel line in copper and its alloys Part 13: Press
17、ure control regulator Part 14: Differential pressure fuel content gauge Part 15: Capacitance fuel content gaugeiv ISO 2014 All rights reservedBS ISO 12614-6:2014ISO 12614-6:2014(E) Part 16: Heat exchanger vaporizer Part 17: Natural gas detector Part 18: Gas temperature sensor ISO 2014 All rights res
18、erved vBS ISO 12614-6:2014BS ISO 12614-6:2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 6: Pressure regulator1 ScopeThis part of ISO 12614 specifies tests and requirements for the pressure regulator, a liquefied natural gas fuel system component intended for use on the typ
19、es of motor vehicles defined in ISO 3833. This part of ISO 12614 is applicable to vehicles using natural gas in accordance with ISO 15403 (mono-fuel, bi-fuel, or dual-fuel applications). It is not applicable to the following:1) fuel containers;2) stationary gas engines;3) container mounting hardware
20、;4) electronic fuel management;5) refueling receptacles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this part of ISO 12614 and tested according to the appropriate functional tests.NOTE 2 All references to pressure in t
21、his part of ISO 12614 are to be considered gauge pressures unless otherwise specified.NOTE 3 This part of ISO 12614 is based upon a working pressure for natural gas as a fuel of 1,6 MPa (16 bar). (1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.) Other working pressures can be accommodated by adjusting th
22、e pressure by the appropriate factor (ratio). For example, a 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicatio
23、n. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 12614-1, Road vehicles Liquefied natural gas (LNG) fuel system components Part 1: General requirements and definitionsISO 12614-2, Roa
24、d vehicles Liquefied natural gas (LNG) 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 12614-1 and the following apply.3.1lock-up pressurestabilized outlet pressure of the regulator at
25、 0 (zero) flowINTERNATIONAL STANDARD ISO 12614-6:2014(E) ISO 2014 All rights reserved 1BS ISO 12614-6:2014ISO 12614-6:2014(E)4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark, or symbol;b) the mod
26、el designation (part number);c) the working pressure or pressure and temperature range.The following additional markings are recommended:a) the direction of flow (when necessary for correct installation);b) the type of fuel;c) electrical ratings (if applicable);d) the symbol of the certification age
27、ncy;e) the type approval number;f) the serial number or date code;g) a reference to this part of ISO 12614 (i.e. ISO 12614-6:2014).NOTE 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.5 Construction and a
28、ssembly5.1 The pressure regulator shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2, and with the tests specified in Clause 6.5.2 The pressure regulator shall have a factory-set maximum outlet pressure. The maximum outlet pressure rating and the inlet pressure rating shall b
29、e marked on the regulator.6 Test6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.Table 1 Tests applicableTest ApplicableTest procedure as required by ISO 12614-2Specific test requirements of this part of ISO 12614Hydrostatic strength X X X (see 6.2)Leakage X X X (see 6.
30、3)Excess torque resistance X XBending moment X XContinued operation X X X (see 6.4)Corrosion resistance X XOxygen ageing X XaThe vibration resistance test in ISO 12614-2 is not applicable if the pressure regulator is engine-mounted.2 ISO 2014 All rights reservedBS ISO 12614-6:2014ISO 12614-6:2014(E)
31、Test ApplicableTest procedure as required by ISO 12614-2Specific test requirements of this part of ISO 12614Electrical overvoltages X XNon-metallic synthetic immersion X XVibration resistance X XaBrass material compatibility X XInsulation resistanceMinimum opening voltageaThe vibration resistance te
32、st in ISO 12614-2 is not applicable if the pressure regulator is engine-mounted.6.2 Hydrostatic strength6.2.1 Test the pressure regulator according to the procedure for testing hydrostatic strength specified in ISO 12614-2.6.2.2 Test the inlet at a pressure of 2,5 the working pressure.6.2.3 Test the
33、 outlet chamber, port, and all outlet fittings at 2 times the working pressure or 0,4 MPa (4 bar), whichever is the greater.6.3 External leakageTest the pressure regulator at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure (factor working
34、pressure)First Second40 1,0 WP 0,25 WP20 0,25 WP1,5 WP85 or 120 0,25 WP6.4 Continued operationThe pressure regulator shall be able to withstand 50 000 cycles without any failure when tested according to the following procedure. Where the stages of pressure regulation are separate, the working pressu
35、re in a) to c) is considered to be the working pressure of the upstream stage.a) Recycle the regulator for 50 % of the total number of cycles at room temperature and at the working pressure. Each cycle shall consist of flow until stable outlet pressure has been obtained, after which the gas flow sha
36、ll be shut off by a downstream valve within 1 s, until the downstream lock-up pressure has stabilized. Stabilized outlet pressures are defined as set pressure 15 % for at least 5 s. The regulator shall comply with 6.3 at room temperature at intervals of 20 %, 40 %, 60 %, 80 %, and 100 % of room temp
37、erature cycles.b) Repeat the cycling procedure of a) at 40 C and 100 % of working pressure for 50 % of the total number of cycles.c) At the completion of the cycles, the lock-up pressure downstream of the regulator shall not exceed the lock-up pressure specified by the manufacturer.Table 1 (continue
38、d) ISO 2014 All rights reserved 3BS ISO 12614-6:2014ISO 12614-6:2014(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions4 ISO 2014 All rights reservedBS ISO 12614-6:2014BS ISO 12614-6:2014ISO 12614-6:2014(E) ISO 2014 All rights reservedICS 43.060.40Price based on 4 pagesThis page del
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