GB/T 18299-2024 Automotive LPG steel cylinder multivalve
1 Scope
This document specifies the types and structures, technical requirements, inspection and test methods, inspection rules, as well as marking, packaging, storage and transportation of automotive LPG steel cylinder multivalves (hereinafter referred to as “multivalves”).
This document is applicable to automotive LPG steel cylinder multivalves designed to operate within an ambient temperature range of -40℃ to +60℃, a nominal working pressure of 2.2MPa, and a medium that complies with GB 19159.
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 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 3098.1 Mechanical properties of fasteners - Bolts, screws and studs
GB/T 4423 Copper and copper alloy cold-drawn rod and bar
GB/T 5121.1 Methods for chemical analysis of copper and copper alloys - Part 1: Determination of copper content
GB/T 5121.3 Methods for chemical analysis of copper and copper alloys - Part 3: Determination of lead content
GB/T 5121.9 Methods for chemical analysis of copper and copper alloys - Part 9: Determination of iron content
GB/T 5231 Designation and chemical composition of wrought copper and copper alloys
GB/T 13005 Terminology of gas cylinders
GB/T 17259 Liquefied petroleum gas steel cylinders for vehicles
GB/T 33215 Pressure relief devices for gas cylinders
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13005 and GB/T 33215 and the following apply.
3.1
filling unit
a device installed on the inlet passage of the multivalve body, used for filling the steel cylinder with medium
3.2
level indicator
a device with a limit filling warning scale, used to display the liquid level inside the steel cylinder
3.3
installation angle
α
the installation angle of the multivalve is the angle between the axis of the multivalve and the horizontal plane
4 Types and structures
4.1 Method of indicating model
The method for formulating and indicating the multivalve model is as follows:
Example:
For an automotive LPG steel cylinder multivalve with a steel cylinder model of LPG-W-314-60-2.2, an installation angle of 30°, and a modification number of I, the model is: CYFJ 314-30 I.
4.2 Basic structure
The multivalve consists of some or all of the following functional components: Filling unit, filling limit device, safety valve, level indicator, flow limiting device, inlet shutoff valve, and outlet shutoff valve.
Contents
Foreword III
1 Scope
2 Normative references
3 Terms and definitions
4 Types and structures
4.1 Method of indicating model
4.2 Basic structure
5 Technical requirements
5.1 Design and process requirements
5.2 Material requirements
5.3 Performance requirements
6 Inspection and test methods
6.1 Test conditions
6.2 Mechanical property test and chemical composition analysis of metallic part materials
6.3 Performance test of non-metallic materials
6.4 Air tightness test
6.5 Vibration resistance test
6.6 Pressure test
6.7 Float pressure leakage test
6.8 Durability test
6.9 Safety valve test
6.10 Filling limit device and level indicator test
6.11 Flow-limiting valve test
6.12 Appearance inspection
7 Inspection rules
7.1 Material and parts incoming inspection
7.2 End-of-manufacturing inspection
7.3 Type test and sampling
7.4 Judgment rules
8 Marking, packaging, storage and transportation
8.1 Marking
8.2 Packaging
8.3 Storage and transportation
Bibliography
