1、BSI Standards PublicationBS ISO 12614-16:2014Road vehicles Liquefiednatural gas (LNG) fuel systemcomponentsPart 16: Heat exchanger - vaporizerBS ISO 12614-16:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO12614-16:2014.The UK participation in its preparati
2、on was entrusted 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
3、for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77163 7ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy
4、and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 12614-16:2014 ISO 2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 16: Heat exchanger - vaporizerVhicules routiers quipements pour vhicules utilisant le gaz naturel liqufi (GNL
5、) comme combustible Partie 16: changeur de chaleur - vaporisateurINTERNATIONAL STANDARDISO12614-16First edition2014-07-01Reference numberISO 12614-16:2014(E)BS ISO 12614-16:2014ISO 12614-16:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwi
6、se 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 from either ISO at the address bel
7、ow or ISOs member body in the country of 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 12614-16:2014ISO 12614-16:2014(E) ISO 2014 All rights reserved iiiContents PageF
8、oreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Test 26.1 Applicability 26.2 Hydrostatic strength 36.3 Leakage 36.4 Continued operation 36.5 Water jacket freezing . 36.6 Compatibility with heat exchange fluids of non-metallic parts
9、4Bibliography 5BS ISO 12614-16:2014ISO 12614-16:2014(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 committees.
10、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 Internat
11、ional 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 differe
12、nt 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 shall
13、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 document is
14、information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific 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) s
15、ee the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, 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
16、 components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Check valve Part 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 hos
17、e Part 10: Rigid fuel line in stainless steel Part 11: Fittings Part 12: Rigid fuel line in copper and its alloys Part 13: Pressure control regulator Part 14: Differential pressure fuel content gauge Part 15: Capacitance fuel content gaugeiv ISO 2014 All rights reservedBS ISO 12614-16:2014ISO 12614-
18、16:2014(E) Part 16: Heat exchanger vaporizer Part 17: Natural gas detector Part 18: Gas temperature sensor ISO 2014 All rights reserved vBS ISO 12614-16:2014BS ISO 12614-16:2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 16: Heat exchanger - vaporizer1 ScopeThis part of ISO
19、 12614 specifies tests and requirements for the heat exchanger - vaporizer, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This part of ISO 12614 is not applicable to the following:a) fuel containers;b) stationary gas engines;c) con
20、tainer mounting hardware;d) electronic fuel management;e) refuelling 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 re
21、ferences to pressure in this 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 acc
22、ommodated by adjusting the 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 indispe
23、nsable for its application. 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 de
24、finitionsISO 12614-2:2014, Road 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 apply.INTERNATIONAL STANDARD ISO 12614-16:2014(E) ISO 2014
25、All rights reserved 1BS ISO 12614-16:2014ISO 12614-16:2014(E)4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or the agents name, trademark, or symbol;b) the model designation (part number);c) the maximum allowable pressu
26、re for gas and coolant space;d) the maximum and minimum working temperature.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 agency;e) the
27、type approval number;f) the serial number or date code;g) a reference to this part of ISO 12614 (i.e. ISO 12614-16:2014).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 assemblyThe
28、 heat exchanger shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2, and with the tests specified in Clause 6.The fittings shall be compatible with rigid fuel line.6 Test6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.Table 1 Tests applicableTest
29、 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 6.3)Excess torque resistance X XBending moment X XContinued operation X X X (see 6.4)Corrosion resistance X XOxygen ageingElectrical overvolt
30、agesNon-metallic synthetic immersion X X2 ISO 2014 All rights reservedBS ISO 12614-16:2014ISO 12614-16:2014(E)Test ApplicableTest procedure as required by ISO 12614-2Specific test requirements of this part of ISO 12614Vibration resistancePull-offBrass material compatibility X XWater jacket freezing
31、X X (see 6.5)Compatibility with heat exchange fluids of non-metallic partsX X (see 6.6)6.2 Hydrostatic strengthThe LNG space of the heat exchanger shall be tested according to the procedure for testing hydrostatic strength specified in ISO 12614-2.Test pressure shall be 2,5 times of working pressure
32、.6.3 LeakageTest the LNG space of the heat exchanger at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure (factor working pressure)First Second162 1,0 WP 0,25 WP20 0,25 WP1,5 WP85 or 120 0,25 WP6.4 Continued operation6.4.1 Subject the fittin
33、g to continued operation for a total of 100 cycles. The fitting shall only be tested while connected with a rigid fuel line.6.4.2 Fittings shall be subjected to 25 connection/disconnection cycles.6.4.3 Perform the leakage test in accordance with 6.3.6.5 Water jacket freezinga) Attach 1 m sections of
34、 coolant hose to the coolant inlet and outlet of the regulator or water jacket. Fill the regulator or water jacket, which normally contains an antifreeze solution, with water to normal capacity and expose it at 40 C (or 20 C as applicable) for 24 h.b) Following the freezing conditioning, and after e
35、xposing the assembly to 20 C for 24 h, conduct an external leakage test at room temperature according to 6.2 of ISO 12614-2:2014.A separate sample can be used for this test.Table 1 (continued) ISO 2014 All rights reserved 3BS ISO 12614-16:2014ISO 12614-16:2014(E)6.6 Compatibility with heat exchange
36、fluids of non-metallic parts6.6.1 Test samples shall be submerged in heat exchange medium for 168 h at 90 C; then they shall be dried for 48 h at a temperature of 40 C. The composition of the heat exchange medium used for the test is water/ethylene-glycol fluid of 50 %/50 %.6.6.2 The test is deemed
37、to be satisfactory if the change in volume is less than 20 %, the change in mass is less than 5 %, the change in tensile strength is less than 25 %, and the change in elongation at break is within 30 % and +10 %.4 ISO 2014 All rights reservedBS ISO 12614-16:2014ISO 12614-16:2014(E)Bibliography1 ISO
38、3833, Road vehicles Types Terms and definitions ISO 2014 All rights reserved 5BS ISO 12614-16:2014ISO 12614-16:2014(E) ISO 2014 All rights reservedICS 43.060.40Price based on 5 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standa
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