Foreword
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 document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and is under the jurisdiction of the National Technical Committee on Gas Cylinder of Standardization Administration of China (SAC/TC 31).
Assembly valve on high pressure hydrogen storage cylinder for vehicles
1 Scope
This document specifies the basic types, technical requirements, test methods and acceptance criteria, inspection rules, marking, packaging, transportation and storage requirements of assembly valve on high pressure hydrogen storage cylinder for vehicles (hereinafter referred to as the “assembly valve”).
This document is applicable to the assembly valve on high pressure hydrogen storage cylinder for vehicles with a nominal working pressure of not greater than 70MPa, a working temperature of -40℃ to 85℃, which are fixed on road vehicles and used as fuel tanks.
The type test of thermally-activated pressure relief device for high pressure hydrogen storage cylinder for vehicles may be carried out with reference to this document.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 192 General purpose metric screw threads - Basic profile
GB/T 196 General purpose metric screw threads - Basic dimensions
GB/T 197 General purpose metric screw threads - Tolerances
GB/T 223 (All parts) Methods for chemical analysis of iron, steel and alloy
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
GB/T 1220 Stainless steel bars
GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
GB/T 3191 Aluminium and aluminium alloys extruded bars, rods
GB/T 3452.2 Fluid power systems - O-rings - Part 2: Quality acceptance criteria
GB/T 3512 Rubber, vulcanized or thermoplastic - Accelerated aging and heat resistance tests - Air-oven method
GB/T 3934 Specification of gauges for general purpose screw threads
GB/T 5720 Test methods for rubber O-rings
GB/T 6031 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 7758 Rubber, vulcanized - Determination of low-temperature characteristics - Temperature-retraction procedure (TR test)
GB/T 7762-2014 Rubber, vulcanized or thermoplastic - Resistance to ozone cracking - Static strain test
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 11170 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 13005 Terminology of gas cylinders
GB/T 13893.2 Paints and varnishes - Determination of resistance to humidity - Part 2: Condensation (in-cabinet exposure with heated water reservoir)
GB/T 13979 Mass spectrometer leak detector
GB/T 20668 Unified screw threads - Basic dimensions
GB/T 20975 (All parts) Methods for chemical analysis of aluminium and aluminium alloys
GB/T 32249 Aluminum and aluminum-alloy die forgings, hand forgings and rolled ring forgings - General specification
GB/T 34542.2 Storage and transportation systems for gaseous hydrogen - Part 2: Test methods for evaluating metallic material compatibility in hydrogen atmosphere
GB/T 34542.3 Storage and transportation systems for gaseous hydrogen - Part 3: Test method for determination of the susceptibility of metallic materials to hydrogen gas embrittlement (HGE)
NB/T 47010 Stainless and heat-resisting steel forgings for pressure equipment
YS/T 479 Wrought aluminum and aluminum alloy for general engineering
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13005 and the following apply.
3.1.1 assembly valve on high pressure hydrogen storage cylinder for vehicles
valve installed on the high pressure hydrogen storage cylinder for vehicles, which is composed of components such as manual shut-off valve, automatic shut-off valve, check valve, thermally-activated pressure relief device (TPRD) and temperature sensor
3.2 Symbols
For the purposes of this document, the following symbols apply.
p: nominal working pressure of assembly valve, in MPa.
4 Basic types
4.1 Assembly valve shall include manual shut-off valve, automatic shut-off valve, check valve, TPRD and temperature sensor.
4.2 The model designation of the assembly valve shall consist of the followings.
Example: the model designation of the assembly valve on high pressure hydrogen storage cylinder for vehicles with a nominal working pressure of 35MPa, a rated DC voltage of 12V and a design S.N. of I is CQZF-35-12-I.
Foreword i
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Basic types
5 Technical requirements
6 Test methods and acceptance criteria
7 Inspection rules
8 Marking, packaging, transportation and storage
9 Product certificate, and quality certificate for batch inspection
Annex A (Nominative) Calculation method for shear stress safety factor of thread
Annex B (Normative) Property test method and acceptance criteria of seal parts for assembly valve
Annex C (Normative) Air tightness test method (vacuum cabin method)
