Foreword
This document is drafted in accordance with GB/T 1.1-2020 Guidelines for Standardization Part 1: Structure and Drafting Rules of Standardization Documents.
This document replaces GB/T 31138-2014 Compressed Hydrogen Dispensers for Vehicles. Compared with GB/T 31138-2014, except for structural adjustment and editorial changes, the main technical changes are as follows:;
——Added definition of terms (see 3.2, 3.5~3.9);
——Changed the composition of the hydrogenation machine system (see Chapter 4, Chapter 5 of 2014 version)
——Changed the model requirements of the hydrotreater (see Chapter 5, Chapter 4 of 2014 version)
——Technical requirements for hydrogenation machine are added (see 6.1.3, 6.1.4, 6.1.8, 6.1.11, 6.1.13 and 6.1.14),
——The applicable pressure range of hydrogenation machine has been changed (see 6.1.6, 6.2.4 of 2014 version),
——Requirements for gas filter have been changed (see 6.1.7, 6.2.5 of 2014 version);
——Requirements for safety valves have been changed (see 6.1.9, 6.3.1 of 2014 version);
——Requirements for hydrogen precooling have been changed (see 6.3.4 of 6.1.102014);
——Changed the requirements for function buttons (see 6.1.12, 6.3.5 of 2014):
——Requirements for appearance and structure of hydrotreater have been added [see g) in 6.2;
——The measurement accuracy and repeatability requirements have been changed (see 6.3.1. i, 6.2.1 and 6.2.2 of the 201 edition),
——Changed the power supply adaptability requirements (see 6.3.2, 6.2.6 of 2014 version)
——Functional and performance requirements are added (see 6.3.3, 6.3.9-6.3.15, 6.3.19);
——The compressive strength requirements of i have been changed (see 6.3.4 and 6.2.9 of 2014 edition),
——The air tightness requirements have been changed (see 6.3.5.26M4 version 6.2.8);
——Requirements for power failure protection and duplicate display have been changed (see 6.3.7, 6.2.11 of 2014 version)
——Requirements for environmental adaptability have been changed (see 6.3.8. 6.2.7 of 2014 version):
——Requirements for pull off valve have been changed (see 6.3.17, 6.3.8 of 2014 version);
——Requirements for hydrogenation lance have been changed (see 6.3.18, 6.3.9 of 2014 version):
——Safety requirements for hydrogenation machine are added (see 6.4.1, 6.4.2, 6.4.4, 6.4.6, 6.4.7, 6.4.12~6.4.16, version 6.3 of 2014);
——Requirements for hydrogen precooling temperature have been changed (see 6.4.3, 6.3.4 of 2014 version);
——Requirements for hydrogen injection flow have been changed (see 6.4.5, 6.3.2 of 2014 version);
——Requirements for communication failure of hydrogenation machine have been changed (see 6.4.7, 6.3.3 of 2014 version);
——Emergency stop requirements have been changed (see 6.4.8, 6.3.5 of 2014 version)
——The test conditions have been changed (see 7.1 in 2014 version);
——The basic function, appearance and structure inspection requirements have been changed (see 7.2, 7.3, 7.3.1 of 2014 version)
——The measurement accuracy test requirements have been changed (see 7.4.12 7.3.4 and 7.3.5 of 2014 edition):
——Requirements for power supply adaptability test are added (see 7.4.2);
——Requirements for pipeline and valve testing are added (see 7.4.3);
——The requirements for compressive strength test have been changed (see 7.4.4. 7.3.3 of 2014 version):
——The air tightness test requirements have been changed (see 7.4.5. 7.3.2 of 2014 version):
——Change the requirements for power failure and duplicate display test (see 7.4.7 7.3.8 of 2014 version);
——The requirements for the state test at the end of filling are added (see 7.4.9);
——Change the test requirements of pull off valve (see 7.4.11, 7.3.9.4 of 2014 version),
——Requirements for testing of hydrogenation lance are added (see 7.4.12),
——Requirements for hydrogenation machine cleanliness test are added (see 7.4.13);
——The safety performance test requirements have been changed (see 7.5, 7.3.9 of 2014 version);
——Requirements for test items have been changed (see Table 7, Table 2 of 2014 edition)
——The requirements of delivery inspection, type test and judgment rules have been changed (see 8.2~8.4, 8.1~8.3 of 2014 version);
——The requirements for the nameplate of the hydrotreater have been changed (see 9.1.3, 9.1.3 of 2014 version);
——Added installation requirements (see 9.4),
——Added maintenance requirements (see 9.5);
——The filling boundary conditions of hydrogenation machine are added (see Appendix C and Appendix D)
Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume the responsibility of identifying the patent. This document is proposed and under the jurisdiction of National Technical Committee for Hydrogen Energy Standardization (SAC/TC 309),
1 Scope
This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for hydrogen dispensers used in fuel cell vehicle hydrogen refueling stations or hydrogen refueling facilities.
This document is applicable to the hydrogenation machine with nominal working pressure not greater than 70MPa used in the hydrogenation station or hydrogenation facility. Hydrogen ships, hydrogen trams, hydrogen aircraft, hydrogen engineering vehicles, hydrogen power generation devices and other hydrogenation facilities can also refer to this document.
2 Normative References
The contents in the following documents, through normative references, constitute indispensable provisions of this document. Where, for dated references, only the version corresponding to that date applies to this document; For undated references, the latest version (including all amendments) is applicable to this document.
GB/T 191 Packaging Pictorial Marks for Storage and Transportation
GB/T 2423.1 Environmental Testing for Electric and Electronic Products Part 2: Test Methods Test A: Low Temperature
GB/T 2423.2 Environmental Testing for Electric and Electronic Products Part 2: Test Methods Test B: High Temperature
GB 3836 Electrical Equipment for Explosive Gas Atmospheres (All Parts)
GB 4943.1 Information Technology Equipment Security Part 1: General Requirements
GB/T 10543 Rubber hoses and hose assemblies for aircraft ground refueling and oil drainage
GB/T 13384 General Technical Conditions for Packaging of Mechanical and Electrical Products
GB/T 22380.2 Explosion proof Safety Technology for Fuel Filling Stations Part 2: Safety Requirements for Structure and Performance of Safety Pull off Valves for Fuel Dispensers
GB/T 24499 Terminology of Hydrogen, Hydrogen Energy and Hydrogen Energy System
GB/T 34425 Fuel Cell Electric Vehicle Hydrogenation Gun
GB/T 36126 LNG Dispenser for Automobile
GB/T 37244 Hydrogen Fuel for Proton Exchange Membrane Fuel Cell Vehicles
GB 50516 Technical Specification for Hydrogenation Station
SJ/T 10694 General Specification for Anti static Testing of Electronic Product Manufacturing and Application System
TSG 21 Supervision Regulation on Safety Technology for Stationary Pressure Vessels
3 Terms and definitions
The terms and definitions defined in GB/T 24499, GB 50516 and the following are applicable to this document.
Hydrogen dispenser
It is a special equipment that provides hydrogen fuel filling service for hydrogen storage cylinders and has the functions of control, metering and pricing, which is called hydrogen dispenser for short.
Hydrogenation gun
It is installed at the end of the hydrogenation hose of the hydrogenation machine to connect the refueling interface between the hydrogenation machine and the on-board hydrogen storage system.
Hydrogenation inlet
The total number of components connected to the hydrogenation gun at the end of the on-board hydrogen storage system.
Breakaway device
For the device installed on the hydrogenation hose, when the tension limit is exceeded during the hydrogenation process, the hydrogenation hose on the hydrogenation machine can be disconnected to prevent hydrogen leakage from the hydrogenation machine.
Hydrogenation hose
A flexible hose for filling hydrogen fuel into vehicles. One end of the hydrogen refueling hose is connected to the pull off valve and the other end is connected to the hydrogen refueling gun.
Target pressure
The expected pressure value in the hydrogen storage cylinder at the end of normal filling.
Fill rate state of charge SOC
After filling, the ratio of hydrogen density corresponding to the pressure and temperature in the hydrogen storage cylinder to the density of hydrogen at the nominal working pressure and 15 ℃.
Filling speed
During hydrogen filling, the flow rate of hydrogen or the rate of pressure rise in the hydrogen storage cylinder.
Filling mode
The flow regulation mode of the hydrogenation machine during filling is divided into automatic filling mode and ordinary filling mode. Automatic filling mode means that the filling rate can be adjusted actively during the filling process; The normal filling mode means that the filling rate is adjusted through the orifice plate or needle valve during the filling process.
Onboard hydrogen storage system
In fuel cell vehicles, it is a general term for the system consisting of one or more hydrogen storage cylinders and related auxiliary valves and pipelines.
Communication
The data exchange between the hydrogenation machine and the on-board hydrogen storage system is carried out by means of wire or wireless.
4 Model
The model of hydrogenation machine consists of the following parts.
5 System Composition
The typical system composition and working process of the hydrogenation machine are shown in Figure 1: hydrogen enters the inlet pipe of the hydrogenation machine from the gas source interface, and then successively passes through the gas filter, inlet valve, mass flow meter, heat exchanger (optional), flow regulating device, hydrogenation hose, pull off valve, and hydrogenation gun, and then is charged into the hydrogen storage cylinder through the hydrogenation port. The control system of the hydrogenation machine automatically controls the hydrogenation process and communicates with the station control system of the hydrogenation station and the hydrogenation communication interface in real time.
6 Technical Requirements
7 Test method
8 Inspection Rules
9 Marking, Packaging, Transportation, Storage, Installation and Maintenance
Appendix A (Informative) Schematic Diagram of On board Hydrogen Storage System
Appendix B (Informative) Calculation Method of Hydrogen Density
Appendix C (normative) Filling boundary conditions of 35 MPa hydrogenation machine
Appendix D (Normative) Filling Boundary Conditions for 70 MPa Hydrogenation Machine
Appendix E (Informative) Standard Hydrogenation Process
Appendix F (informative) Hydrogenation hose rupture test device
Bibliography
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 System composition
5 Model
6 Technical requirements
7 Test methods
8 Inspection rules
9 Marking, packaging, transportation, storage, installation and maintenance
Annex A (Informative) Schematic diagram for onboard hydrogen storage system
Annex B (Informative) Calculational method for hydrogen density
Annex C (Normative) Fueling boundary conditions for hydrogen dispenser at 35Mpa
Annex D (Normative) Fueling boundary conditions for hydrogen dispenser at 70Mpa
Annex E (Normative) Standard hydrogen dispensing process
Annex F (Normative) Test device for dispenser hose disruption
Bibliography
