Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of SAC/TC 342 National Technical Committee on Fuel Cell and Flow Battery of Standardization Administration of China.
Technical requirements of hydrogen supply system for proton exchange membrane fuel cells
1 Scope
This standard specifies the system classification, technical requirements, test methods, identification, packaging and transportation of hydrogen supply system for proton exchange membrane fuel cells (hereinafter referred to as "fuel cell hydrogen supply system" or "hydrogen supply system").
This standard is applicable to the system supplying hydrogen for proton exchange membrane fuel cells.
2 Normative references
The following 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.
GB/T 3634.1 Hydrogen - Part 1: Industrial hydrogen
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code)
GB/T 6681 General rules for sampling gaseous chemical products
GB 12358 Gas monitors and alarms for workplace - General technical requirements
GB 16808 Combustible gas alarm control units
GB/T 17626.2-2006 Electromagnetic compatibility (EMC) - Testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
GB/T 18384 (all parts) Electrically propelled road vehicles - Safety specifications
GB/T 20042.1 Proton exchange membrane fuel cell - Part 1: Terminology
GB/T 24499 Technology glossary for gaseous hydrogen, hydrogen energy and hydrogen energy system
GB/T 24548 Fuel cell electric vehicles - Terminology
IEC 61779-6 Electrical apparatus for the detection and measurement of flammable gases - Part 6: Guide for the selection, installation, use and maintenance of apparatus for the detection and measurement of flammable gases
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 20042.1, GB/T 24499 and GB/T 24548 and the following apply.
3.1
fuel cell hydrogen supply system
assembly of equipment that supplies hydrogen for fuel cells and is related to production, storage and supply of hydrogen
3.2
hydrogen storage vessel
vessel for containing hydrogen or hydrogen storage materials, which does not include any accessories placed or embedded inside or outside the vessel
3.3
hydrogen production material
material that produces hydrogen by itself or through physical or chemical processes with other materials
3.4
hydrogen production equipment
equipment that produces hydrogen through the physical or chemical processes of hydrogen production material
Note: The equipment includes a filling port of hydrogen production material.
4 System classification
According to different chemical forms of the hydrogen stored, the hydrogen supply system may be classified into:
——Hydrogen supply system for proton exchange membrane fuel cells that stores hydrogen in gaseous elemental form, that is, the system that stores hydrogen in hydrogen storage vessel and directly supplies hydrogen for fuel cell, consisting of the following single equipment or devices: hydrogen storage vessel, hydrogen pipeline, stop valve, pressure reducing valve, pressure relief device, heat exchange device, monitoring device and other auxiliary devices, etc. The structural diagram is shown in Figure 1. The pipe fitting assembly in the figure includes components, pipelines and joints that are in direct contact with hydrogen or become part of the hydrogen supply system, and may be composed of metal and nonmetal pipe fittings.
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——Hydrogen supply system for proton exchange membrane fuel cells that stores hydrogen in compound form, that is, the system that uses hydrogen production material, mainly including metal hydrogen storage compounds, liquid organic hydrogen storage compounds, ammonia hydrogen storage compounds, methanol, liquid water, etc., to prepare hydrogen through physical or chemical processes so as to supply hydrogen to fuel cells, consisting of the following devices: hydrogen production reaction device, protective cover/shell, radiator, hydrogen purification device, gas buffer device, pipeline, monitoring device and other auxiliary devices, etc. The structural diagram is shown in Figure 2.
Figure 1 Schematic structural diagram of a fuel cell hydrogen supply system that stores hydrogen in gaseous elemental form
Figure 2 Schematic structural diagram of a fuel cell hydrogen supply system that stores hydrogen in compound form
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5 Technical requirements
5.1 General requirements
5.1.1 General
The fuel cell hydrogen supply system shall meet the technical requirements for the scale and quality of hydrogen of fuel cells and be reasonably configured. The design, manufacture, inspection and acceptance of single equipment or devices, pipe fittings and materials used shall meet the requirements of relevant standards.
5.1.2 Vibration and impact
The fuel cell hydrogen supply system shall be able to resist vibration and impact to a certain extent, so as to ensure that the vibration and impact generated during normal use, transportation or storage will not damage the components of the hydrogen supply system. Anti-vibration facilities may be installed to avoid adverse effects caused by vibration and impact, including vibration and impact caused by single and auxiliary equipment in the system itself, as well as by external environment.
After subjected to adverse vibration and impact, the hydrogen supply system shall meet the requirements of 6.2.1 and 6.2.2, and preventive measures shall be taken to ensure the safety of person and property.
5.1.3 Material selection
The fuel cell hydrogen supply system is in direct or indirect contact with hydrogen, so it shall be compatible with hydrogen, and the selected materials shall meet the following requirements:
——Under all use conditions, the materials shall have necessary chemical stability, and free of various forms of chemical reactions during use to avoid polluting the hydrogen. Hydrogen brittleness, hydrogen corrosion, stress corrosion and other forms of corrosion shall be avoided as much as possible. The hydrogen brittleness resistance of the selected materials may be tested in accordance with ISO 11114-4.
——The materials shall adapt to the changes of the physical environment of hydrogen supply system, meet the requirements of various mechanical properties, and maintain stable mechanical properties under use conditions.
——The materials of non-metal pipelines and related fittings shall meet the requirements of corresponding standards.
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 System classification
5 Technical requirements
6 Test methods
7 Identification
8 Packaging and transportation
Annex A (Normative) Sealing/venting test of sealed box
Annex B (Informative) Equation and coefficient of hydrogen compressibility factor
Bibliography
