ISO 12619-2-2014 Road vehicles - Compressed gaseous hydrogen (CGH2) and hydrogen natural gas blend fuel system components - Part 2 Performance and general test .pdf

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1、 ISO 2014 Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/ natural gas blend fuel system components Part 2: Performance and general test methods Vhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 2: P

2、erformance mthodes dessai en gnral INTERNATIONAL STANDARD ISO 12619-2 First edition 2014-06-15 Reference number ISO 12619-2:2014(E) ISO 12619-2:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication ma

3、y 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 of the

4、 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.org Web www.iso.org Published in Switzerland ISO 12619-2:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erm

5、s and definitions . 2 4 General 2 5 Hydrostatic strength . 2 6 Leakage. 3 6.1 General . 3 6.2 External leakage . 3 6.3 Internal leakage 3 6.4 Test conditions 4 7 Excess torque resistance 4 8 Bending moment 4 9 Continued operations 5 9.1 General . 5 9.2 Test method . 6 10 Corrosion resistance . 6 11

6、Oxygen ageing 7 12 Ozone ageing . 7 13 Electrical over voltages 7 14 Non-metallic material immersion 8 15 Vibration resistance 8 16 Brass material compatibility . 9 17 Non metallic material compatibility to hydrogen 9 18 Metallic material compatibility to hydrogen. 9 19 Pre-cooled hydrogen exposure

7、test 9 20 Insulation resistance 9 21 Ultraviolet resistance of external surfaces.10 22 A ut omoti v e fluid e xposur e 10 22.1 Fluids 10 22.2 Pass criteria 10 Bibliography .11 ISO 12619-2:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national

8、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 that committee. International

9、 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 document and those intended fo

10、r 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 Directives, Part 2 (see www.iso.or

11、g/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 development of the document will be

12、 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 specific terms and expression

13、s 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 information The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 25, Vehi

14、cles using gaseous fuels. ISO 12619 consists of the following parts, under the general title Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Pres

15、sure regulatoriv ISO 2014 All rights reserved INTERNATIONAL ST ANDARD ISO 12619-2:2014(E) Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 2: Performance and general test methods 1 Scope This part of ISO 12619 specifies performance and gener

16、al test methods for compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components, intended for use on the types of motor vehicles defined in ISO 3833. This part of ISO 12619 is applicable to vehicles using CGH2 in accordance with ISO 14687-1 or ISO 14687-2 and hydrogen/n

17、atural gas blends using natural gas in accordance with ISO 15403-1 and ISO/TR 15403- 2. It is not applicable to the following: liquefied hydrogen (LH2) fuel system components; fuel containers; stationary gas engines; container mounting hardware; electronic fuel management; refuelling receptacles. NO

18、TE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this part of ISO 12619 and tested according to the appropriate functional tests. NOTE 2 All references to pressure in this part of ISO 12619 are to be considered gauge pressure

19、s unless otherwise specified. NOTE 3 This part of ISO 12619 may not apply to fuel cell vehicles in compliance with international regulations. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. Fo

20、r 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 ageing and heat resistance tests ISO 1431-1, Rubber, vulcanized or thermoplastic Resi

21、stance to ozone cracking Part 1: Static and dynamic strain testing ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 11114-2, Gas cylinders Compatibility of cylinder and valve materials with g

22、as contents Part 2: Non-metallic materials ISO 2014 All rights reserved 1 ISO 12619-2:2014(E) ISO 11114-4, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement ISO 12619-1

23、:2014, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 1: General requirements and definitions ISO 12619-3:2014, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 3: Pressure regulat

24、or ISO 14687-1, Hydrogen fuel Product specification Part 1: All applications except proton exchange membrane (PEM) fuel cell for road vehicles ISO 14687-2, Hydrogen fuel Product specification Part 2: Proton exchange membrane (PEM) fuel cell applications for road vehicles ISO 15500-2, Road vehicles C

25、ompressed natural gas (CNG) fuel system components Part 2: Performance and general test methods ISO 15403-1, Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality ISO/TR 15403-2, Natural gas Natural gas for use as a compressed fuel for vehicles Part 2:

26、Specification of the quality ASTM G154, Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials ASTM D4814 11b, Standard Specification for Automotive Spark-Ignition Engine Fuel 3 T erms a nd definiti ons For the purposes of this document, the terms and de

27、finitions given in ISO 12619-1 apply. 4 General 4.1 Unless otherwise stated, the tests shall be conducted at room temperature, i.e. 20 C 5 C. 4.2 Components shall comply with the tests specified in ISO 12619-3 and subsequent parts, as well as the applicable tests specified in this part of ISO 12619.

28、 Because of the peculiarities of some components, the list of tests given in this part of ISO 12619, (Clauses 5 to 17) is not exhaustive. Where additional tests are required, their provisions are given in another relevant part. 4.3 Unless otherwise specified, all tests shall be conducted using dry h

29、ydrogen, helium or blends of nitrogen with a minimum 5 % of hydrogen. The tests shall be performed by qualified personnel and appropriate safety measures shall be taken. The dew point of the test gas at the test pressure shall be at the temperature at which there is no icing, or hydrate or liquid fo

30、rmation. The dew point of the test gas at the test pressure shall be at the temperature at which there is no icing, or hydrate or liquid formation. 4.4 It is recognized that new technology may not be covered in ISO 12619-3 or subsequent parts of ISO 12619. 4.5 Hydrogen used for testing shall comply

31、with either ISO 14687-1 or ISO 14687-2. 5 Hydrostatic strength A component shall not show any visible evidence of rupture when subjected to the following test procedure.2 ISO 2014 All rights reserved ISO 12619-2:2014(E) Plug the outlet opening of the component and have the valve seats or internal bl

32、ocks assume the open position. Apply, with a test fluid, the hydrostatic pressure specified in the applicable part of ISO 12619 to the inlet of the component for a period of at least 3 min. The hydrostatic pressure shall be increased at a rate of less than or equal to 1,4 MPa/sec until component fai

33、lure. The hydrostatic pressure at failure shall be recorded. The failure pressure of components which have been subjected to previous durability and corrosion tests shall be no less than 80 % of the failure pressure of the virgin component. The samples used in this test shall not be used for any oth

34、er testing. 6 Leakage 6.1 General 6.1.1 Prior to conditioning, purge the component or device with nitrogen and then seal it at 30 % of working pressure using test gases as defined in 4.3. In case of components subjected to more than one working pressure, the test may be conducted in subsequent steps

35、. 6.1.2 Conduct all tests while the device is continuously exposed to the specified test temperatures. The device passes the test if it shall have a leakage rate of less than 10 Ncm 3 /h (normal referred to hydrogen) of hydrogen gas using the test method specified in 6.2, 6.3 and 6.4. If test gas ot

36、her than pure hydrogen is used, the leak rate shall be converted to a 100 % hydrogen gas leak rate equivalent. 6.2 External leakage 6.2.1 Plug each device outlet with the appropriate mating connection and apply the test pressure to the inlet. 6.2.2 Apply test gases as defined in 4.3 to the test devi

37、ce. 6.2.3 At all test temperatures, immerse the components in a suitable test medium for at least 2 min or use a helium vacuum test (global accumulation method) or other equivalent method. 6.2.4 Measure the leak rate by an appropriate method. It should not be more than as specified in 6.1.2. 6.3 Int

38、ernal leakage 6.3.1 The internal leakage test is applicable only to devices having a closed position. The aim of this test is to check the pressure tightness of the closed system. 6.3.2 Connect the inlet or outlet, as applicable, of the device, with the appropriate mating connection, while leaving t

39、he opposite connection or connections open. 6.3.3 Apply the test pressure to the inlet or outlet, as applicable, of the device using test gas. 6.3.4 At all applicable temperatures mentioned in 6.4, immerse the component in a suitable test medium for at least 2 min or other equivalent method. 6.3.5 M

40、easure the leak rate at any applicable test pressure mentioned in 6.4, or otherwise specified in the other parts of the ISO 12619 series, by an appropriate method and it should not be more than as specified in 6.1.2. ISO 2014 All rights reserved 3 ISO 12619-2:2014(E) 6.4 Test conditions 6.4.1 The de

41、vice shall be pressurized at 100 % of service pressure and then conditioned until temperature equilibrium is achieved at low temperature of 40 C or 20 C, as applicable, and maintained at that temperature for at least 30 min. Then the device shall be pressurized at 5 % of service pressure and maintai

42、ned at that temperature for at least 30 min. 6.4.2 The device shall be pressurized at 5 % of service pressure and then conditioned until temperature equilibrium is achieved at the room temperature of 20 C 5 C and maintained at that temperature for at least 30 min. Then the device shall be pressurize

43、d at 150 % of service pressure and maintained at that temperature for at least 30 min. 6.4.3 The device shall be pressurized at 5 % of service pressure and then conditioned until temperature equilibrium is achieved at high temperature of 85 C or 120 C, as applicable, and maintained at that temperatu

44、re for at least 30 min. Then the device shall be pressurized at 150 % of service pressure and maintained at that temperature for at least 30 min. 7 Excess torque resistance A component designed to be connected directly to threaded fittings shall be capable of withstanding, without deformation, break

45、age or leakage, a torque effort of 150 % of the rated installation value, according to the following test procedure. a) Test an unused component, applying the torque adjacent to the fitting. b) For a component having a threaded connection or threaded connections, apply the turning effort for 15 min,

46、 release it, then remove the component and examine it for deformation and breakage. c) Subject the component to the leakage test specified in Clause 6. d) Subject the component to the hydrostatic strength test specified in Clause 5. 8 Bending moment A component shall be capable of operation without

47、cracking, breaking, or leaking when tested according to the following procedure. a) Assemble the connections of the component, leak-tight, to an appropriate mating connection or connections, representative of design intent. After assembly, the length of the inlet tubing shall be greater than 300 mm

48、(see Figure 1). b) The outlet connection shall be rigidly supported, 25 mm from the component outlet, except in the following cases: if the component has an integral mounting means independent of the inlet and outlet connections, the component shall be mounted using the integral mounting means speci

49、fied by the manufacturer; if the component is intended to be mounted by either the integral mounting means or the component outlet, the mounting means that produces the most severe test condition shall be used. c) Check this assembly for leaks prior to subjecting it to d). d) With the component in the closed position, pressurize the system to 0,25 times the working pressure and apply a force according to Table 1, 300 mm from the inlet, maintaining it for 15 m