1、 ISO 2012 Road vehicles Compressed natural gas (CNG) fuel system components Part 16: Rigid fuel line in stainless steel Vhicules routiers Composants des systmes de combustible gaz naturel comprim (GNC) Partie 16: Tuyauterie rigide pour combustible en acier inoxydable INTERNATIONAL STANDARD ISO 15500
2、-16 Second edition 2012-04-15 Reference number ISO 15500-16:2012(E) ISO 15500-16:2012(E) ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elect
3、ronic 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 Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.o
4、rg Web www.iso.org Published in Switzerland ISO 15500-16:2012(E) 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 c
5、ommittees. 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 t
6、he International Electrotechnical Commission (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 Internat
7、ional Standards adopted by the technical committees 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
8、 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15500-16 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 25, Vehicles using gaseous fuels. This second edition cancels and replaces the first edition (ISO
9、 15500-16:2001), which has been technically revised. ISO 15500 consists of the following parts, under the general title Road vehicles Compressed natural gas (CNG) fuel system components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Check valve Par
10、t 4: Manual valve Part 5: Manual cylinder valve Part 6: Automatic valve Part 7: Gas injector Part 8: Pressure indicator Part 9: Pressure regulator Part 10: Gas-flow adjuster Part 11: Gas/air mixer Part 12: Pressure relief valve (PRV) Part 13: Pressure relief device (PRD) Part 14: Excess flow valve P
11、art 15: Gas-tight housing and ventilation hose Part 16: Rigid fuel line in stainless steel Part 17: Flexible fuel line Part 18: Filter Part 19: Fittings ISO 2012 All rights reserved iii ISO 15500-16:2012(E) Part 20: Rigid fuel line in material other than stainless steel iv ISO 2012 All rights reserv
12、ed ISO 15500-16:2012(E) Introduction For the purposes of this part of ISO 15500, all fuel system components in contact with natural gas have been considered suitable for natural gas as defined in ISO 15403. However, it is recognized that miscellaneous components not specifically covered herein can b
13、e examined to meet the criteria of this part of ISO 15500 and tested according to the appropriate functional tests. All references to pressure in this part of ISO 15500 are considered to be gauge pressures unless otherwise specified. This part of ISO 15500 is based on a service pressure for natural
14、gas used as fuel of 20 MPa 200 bar 1) settled at 15 C. Other service pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 25 MPa (250 bar) service pressure system will require pressures to be multiplied by 1,25. 1) 1 bar = 0,1 MPa = 10 5Pa 1 MPa =
15、 1 N/mm 2 . ISO 2012 All rights reserved v Road vehicles Compressed natural gas (CNG) fuel system components Part 16: Rigid fuel line in stainless steel 1 Scope This part of ISO 15500 specifies tests and requirements for the rigid fuel line in stainless steel, a compressed natural gas (CNG) fuel sys
16、tem component in accordance with ISO 1127 intended for use on the types of motor vehicles defined in ISO 3833. This part of ISO 15500 is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using natural gas in accordance with ISO 15403. It is not applicable to the following: a) liq
17、uefied natural gas (LNG) fuel system components located upstream of, and including, the vaporizer; b) fuel containers; c) stationary gas engines; d) container-mounting hardware; e) electronic fuel management; f) refuelling receptacles. 2 Normative references The following referenced documents are in
18、dispensable 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 1127, Stainless steel tubes Dimensions, tolerances and conventional masses per unit le
19、ngth ISO 15500-1, Road vehicles Compressed natural gas (CNG) fuel system components Part 1: General requirements and definitions ISO 15500-2, Road vehicles Compressed natural gas (CNG) fuel system components Part 2: Performance and general test methods 3 T erms and definitio ns For the purposes of t
20、his document, the terms and definitions given in ISO 15500-1 apply. 4 Marking Marking 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 model designation (part number); INTERNATIONAL STANDARD IS
21、O 15500-16:2012(E) ISO 2012 All rights reserved 1 ISO 15500-16:2012(E) c) the working pressure or pressure and temperature range. The following additional markings are recommended: the direction of flow (when necessary for correct installation); the type of fuel; electrical ratings (if applicable);
22、the symbol of the certification agency; the type approval number; the serial number or date code; reference to this part of ISO 15500. 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
23、and assembly The stainless steel rigid fuel line shall comply with the applicable provisions of ISO 15500-1 and ISO 15500-2, and with the tests specified in Clause 6 of this part of ISO 15500. The stainless steel rigid fuel line shall be seamless cold worked austenitic stainless steel tube complying
24、 with ISO 1127. 6 Tests 6.1 Applicability The tests required to be carried out are indicated in Table 1. Table 1 Applicable tests Test Applicable Test procedure as required by ISO 15500-2 Sp eci fic t est requirement s of this part of ISO 15500 Hydrostatic strength X X X (see 6.2) Leakage X X Excess
25、 torque resistance Bending moment Continued operation X X X (see 6.3) Corrosion resistance X X Oxygen ageing Electrical over-voltages Non-metallic material immersion Vibration resistance Brass material compatibility Bending X X (see 6.4) Conductivity 2 ISO 2012 All rights reserved ISO 15500-16:2012(
26、E) 6.2 Hydrostatic strength Test the rigid fuel line according to the procedure for testing hydrostatic strength specified in ISO 15500-2. The test pressure shall be four times the working pressure. NOTE The higher hydrostatic test pressure for the rigid fuel line compared to the components in the o
27、ther parts of the ISO 15500 series is due to the necessary provisions to cope with eventual damage or abrasions under normal operation. 6.3 Continued operation Test the rigid fuel line in accordance with the procedure for testing continued operation given in ISO 15500-2, for a total of 100 000 cycle
28、s. Following cycling testing, perform the hydrostatic test in accordance with 6.2 of this part of ISO 15500. 6.4 Bending Test the rigid fuel line according to the following procedure and acceptance criterion. a) Select a mandrel with a diameter according to ISO 15500-2, Table 1. b) Bend the rigid fu
29、el line over this mandrel once, forming a “U” shape. c) Close the ends of the rigid fuel line and subject it to the hydrostatic test of 6.2 of this part of ISO 15500. At the completion of the hydrostatic test, the rigid fuel line shall be tested according to the procedure for leakage testing specifi
30、ed in ISO 15500-2. ISO 2012 All rights reserved 3 ISO 15500-16:2012(E) Bibliography 1 ISO 3833, Road vehicles Types Terms and definitions 2 ISO 15403-1, Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality 3 ISO/TR 15403-2, Natural gas Natural gas for use as a compressed fuel for vehicles Part 2: Specification of the quality 4 ISO 2012 All rights reservedISO 15500-16:2012(E) ISO 2012 All rights reserved ICS 43.060.40 Price based on 4 pages
