Electro-magnetic emergency shut-off valve for gas
1 Scope
This document defines the terms and definitions of electro-magnetic emergency shut-off valve for gas, specifies their classification and models, materials and structures, requirements; describes corresponding test methods, and clarifies the requirements for inspection rules, marking and instructions for use, packaging, transportation, and storage.
This document is applicable to electro-magnetic emergency shut-off valve for gas (hereinafter referred to as "shut-off valve") installed on gas user pipelines whose maximum working pressure is not greater than 0.4 MPa and nominal size is not greater than DN300, and the transportation medium is natural gas, liquefied petroleum gas (including liquefied petroleum gas mixed air) and artificial gas.
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 229 Metallic materials - Charpy pendulum impact test method
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 1173 Casting aluminium alloys
GB/T 1220 Stainless steel bars
GB/T 1239.2 Cold coiled helical springs technical specifications - Part 2: Compressions spring
GB/T 1348 Spheroidal graphite iron castings
GB/T 1591 High strength low alloy structural steels
GB/T 1690-2010 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids
GB/T 3191 Aluminium and aluminium alloys extruded bars, rods
GB(/T) 3836 (all parts) Explosive atmospheres
GB 4208 Degrees of protection provided by enclosure (IP code)
GB/T 4423 Copper and copper alloy cold-drawn rod and bar
GB/T 5013.1 Rubber insulated cables of rated voltages up to and including 450/750 V - Part 1: General requirements
GB/T 5023.1 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 1: General requirements
GB/T 6109 (all parts) Enamelled round winding wires
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 1: Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
GB/T 9124.1 Steel pipe flanges - Part 1: PN designation
GB/T 9440 Malleable iron castings
GB/T 10125 Corrosion tests in artificial atmospheres - Salt spray tests
GB/T 12220 Industrial valves - Marking
GB/T 12221 Metal valves - Face to face, end to end, center to face and center to end dimensions
GB/T 12225 General purpose industrial valves - Specification of copper alloy castings
GB/T 12227 General purpose industrial valve - Specification of spheroidal graphite iron castings
GB/T 12229 General purpose industrial valves - Specification of carbon steel castings
GB/T 12230 General purpose industrial valves - Specification of stainless steel castings
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 14536.1-2022 Automatic electrical controls - Part 1: General requirements
GB/T 15115 Die casting aluminum alloys
GB/T 17213.2 Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions
GB/T 21465 Terminology for valves
GB/T 23658 Elastomeric seals - Material requirement for seals used in pipes and fittings carrying gaseous fuels and hydricarbon fluid
GB/T 30597-2014 General requirements of safety and control devices for gas burners and gas-burning appliances
GB/T 32247 Ferritic ductile iron castings suitable for low temperature service
GB 50058 Code for design of electrical installations in explosive atmospheres
JB/T 106 Valves marking and paint
JB/T 7248 Technical specification for low temperature service steel casting for valves
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/(T) 3836 (all parts), GB/T 17213.2, GB/T 21465, GB 50058 and the following apply.
3.1
electro-magnetic emergency shut-off valve for gas
valve (installed on gas user pipelines) that can receive the valve closing signal output from the urban gas safety control system and quickly cut off through the electro-magnetic force generated by the electro-magnetic coil
4 Classification and models
4.1 Classification
See Table 1 for the classification method, category and code of shut-off valve.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and models
4.1 Classification
4.2 Model
5 Material and structure
5.1 Materials
5.2 Structure
6 Requirements
6.1 General requirements
6.2 Appearance
6.3 Enclosure
6.4 Strength of pressure containing part
6.5 Air tightness
6.6 Rated flow
6.7 Performance of emergency cut-off
6.8 Performance of torsion resistance
6.9 Performance of bending resistance
6.10 Performance of impact resistance
6.11 Durability
6.12 Performance of temperature resistance and heat and humidity resistance
6.13 Indication of valve position status
6.14 Electrical safety
6.15 Explosion-proof performance (Ex)
6.16 Protective performance (IP)
6.17 Performance of non-metal materials
6.18 Corrosion resistance
6.19 Temperature rise of solenoid coil
6.20 Safety of electromagnetic compatibility
7 Test methods
7.1 Test conditions
7.2 Appearance inspection
7.3 Enclosure inspection
7.4 Strength test for pressure containing components
7.5 Test for leak tightness
7.6 Test for rated flow
7.7 Test for performance of emergency cut-off
7.8 Test for performance of torsion resistance
7.9 Test for performance of bending resistance
7.10 Test for performance of impact resistance
7.11 Test for durability
7.12 Test for performance of temperature resistance and heat and humidity resistance
7.13 Test for Indication of valve position status
7.14 Test for electrical safety
7.15 Test for explosion-proof performance
7.16 Test for protective performance
7.17 Test for performance of non-metal materials
7.18 Test for corrosion resistance
7.19 Test for temperature rise of solenoid coil
7.20 Test for safety of electromagnetic compatibility
8 Inspection rules
8.1 Inspection items
8.2 End-of-manufacturing inspection
8.3 Type inspection
9 Marking and operating instructions
9.1 Marking
9.2 Instructions for use
10 Packaging, transportation and storage
10.1 Packaging
10.2 Transportation
10.3 Storage
