GB 44016-2024 PDF English
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| GB 44016-2024 | English | 515 |
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GB 44016-2024: Electro-magnetic emergency shut-off valve for gas---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB44016-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.140
CCS P 47
Electro-magnetic Emergency Shut-off Valve for Gas
Issued on. APRIL 29, 2024
Implemented on. AUGUST 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 7
4 Classification and Models... 7
5 Material and Structure... 8
6 Requirements... 13
7 Test Methods... 19
7.20 Electromagnetic Compatibility Safety Test... 28
8 Inspection Rules... 29
9 Marking and Instructions for Use... 30
10 Packaging, Transportation and Storage... 31
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by and shall be under the jurisdiction of Ministry of Housing and
Urban-Rural Development of the People’s Republic of China.
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 the classification and model, material and structure, and requirements;
describes corresponding test methods; clarifies the inspection rules, and the requirements for
marking and instructions for use, packaging, transportation, and storage, etc.
This document is applicable to electro-magnetic emergency shut-off valves for gas installed on
gas user pipelines where the maximum working pressure is not greater than 0.4 MPa and the
nominal dimension is not greater than DN300, and the transmission media are natural gas,
liquefied petroleum gas (including liquefied petroleum gas mixed with air) and artificial gas
(hereinafter referred to as the “shut-off valves”).
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
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 Aluminum Alloy
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
3 Terms and Definitions
The terms and definitions defined in GB(/T) 3836 (all parts), GB/T 17213.2, GB/T 21465 and
GB 50058, and the following are applicable to this document.
4 Classification and Models
4.1 Classification
The classification mode, categories and codes of the shut-off valves are shown in Table 1.
4.2 Model
The model compilation of the shut-off valves shall comply with the following format.
5 Material and Structure
5.1 Material
5.1.1 General requirements
5.1.1.1 The body of the components that separate gas and atmosphere shall be made of metal.
5.1.2 Metal materials
5.1.2.3 In addition to complying with the relevant requirements of GB/T 1239.2, the following
requirements must also be satisfied.
5.1.3 Non-metallic materials
5.1.3.1 Non-metallic materials in contact with gas shall be gas-resistant.
5.1.4 Electrical components
5.1.4.1 The cable materials shall comply with the provisions of GB/T 5013.1 and GB/T 5023.1.
5.2 Structure
5.2.1 Design pressure
Pressure-bearing parts include metal components that bear pressure during normal operation
and components that bear pressure after the pressure differential seal fails. When the maximum
working pressure is 0.01 MPa or 0.1 MPa, the design pressure shall be 0.4 MPa; when the
maximum working pressure is 0.4 MPa, the design pressure shall be 0.6 MPa.
5.2.2 Structural length
The structural length shall comply with the provisions of GB/T 12221.
5.2.3 Structural design
5.2.3.11 The manual shut-off triggering device shall have a protective mechanism, and manual
operation can only be performed after the protection is removed.
5.2.3.12 The shut-off valves with remote transmission device shall have the function of
outputting information, such as. valve position status and valve closing feedback signal, etc.
5.2.3.13 When powered off, the shut-off valves with nominal dimensions greater than DN25
shall be in a closed state.
5.2.3.14 The outgoing cables, terminals and joints of the shut-off valves shall be identified and
explained. When equipped with a connection joint with the urban gas safety control system,
electrical connection parts that prevent falling-off and reverse connections shall be used, and
the protection degree shall not be lower than IP65 in GB/T 4208.
5.2.4 Explosion-proof structure
a) Flat-face Integrally Cast Flange b) Raised-face Integrally Cast Flange
5.2.4.1 The shut-off valves shall adopt an explosion-proof structure.
5.2.4.2 The explosion-proof structural type shall be selected from the following four types, and
shall comply with the relevant provisions of GB(/T) 3836 (all parts).
6 Requirements
6.1 General Requirements
6.1.1 Under the following conditions, the shut-off valves shall normally operate.
6.1.2 The valve closing signal voltage and power supply voltage shall comply with the
following requirements.
6.1.3 The current shall comply with the following requirements.
6.2 Appearance
6.3 Case
In addition to complying with the requirements of 5.1.1.1, the shut-off valves with nominal
dimensions greater than DN25 shall also adopt a metal case to protect the electromagnetic coil.
6.4 Strength of Pressure-bearing Parts
After being subjected to the test in accordance with the provisions of 7.4, the pressure-bearing
parts shall have no deformation, no cracks, and no visible leakage.
6.6 Rated Flow
6.6.1 The manufacturer shall clearly state the rated air flow rate at a pressure difference of 100
Pa between the inlet and outlet of the shut-off valves.
6.7 Emergency Shut-off Performance
6.7.1 The shut-off action shall be flexible and reliable. The shut-off time from the time the shut-
off valve receives the external valve closing signal to the closing of the valve clack and valve
seat shall comply with the provisions of Table 6.
Table 6 -- Shut-off Action Time
6.7.6 For the shut-off valves with remote transmission function, the feedback signal shall be a
passive contact signal, and the feedback signal shall at least be able to distinguish the open and
closed states of the shut-off valve; after the shut-off valves are opened or closed, the passive
contact point shall be able to output the corresponding status signal within 3 seconds.
6.8 Torque Resistance
Apply the torque specified in Table 7 onto the shut-off valves with threaded connection, and
there shall be no damage or deformation, and shall comply with the provisions of 6.5.
6.9 Bending Resistance
Apply the bending moment specified in Table 8 onto the shut-off valves, and there shall be no
damage or deformation, and shall comply with the provisions of 6.5.
7 Test Methods
7.1 Test Conditions
7.1.1 General atmospheric conditions
When there are no special requirements, the test shall be carried out under the following
atmospheric conditions.
7.1.2 Test media
7.1.3 General provisions for test
7.1.4 Selection of instruments and devices for tests
7.2 Appearance Inspection
When the ambient illumination is within the range of 300 lx ~ 500 lx, adopt the method of
visual inspection to check whether they comply with the provisions of 6.2.
7.3 Case Inspection
Check the body of the component that separates the gas from the atmosphere and the protective
case of the electromagnetic coil. Adopt the method of visual inspection to check whether they
comply with the provisions of 6.3.
7.4 Strength Test of Pressure-bearing Parts
Apply pressure to the installed shut-off valve, close the two ends of the shut-off valve, and the
shut-off valve is in the open state. The test pressure is 1.5 times the maximum working pressure,
and not lower than 0.2 MPa. The pressure holding time shall not be lower than 3 minutes.
Determine whether the test result complies with the provisions of 6.4.
7.5 Air Tightness Test
7.5.1 External air tightness
7.6 Rated Flow Test
7.7 Emergency Shut-off Performance Test
7.7.1 When testing the emergency shut-off performance during type inspection, it shall be
carried out under the maximum working pressure. The test of emergency shut-off performance
during exit-factory inspection can be carried out without load.
8 Inspection Rules
8.1 Inspection Items
The inspection items of the shut-off valves are as specified in Table 14.
8.3 Type Inspection
8.3.1 When any of the following circumstances occurs, type inspection shall be carried out.
9 Marking and Instructions for Use
9.1 Marking
9.1.1 Marking on nameplate
The shut-off valves shall have a fixed nameplate in an obvious position, and its content shall at
least include.
9.1.2 Warning signs
The setting of warnings signs for the shut-off valves shall comply with the relevant provisions
of GB(/T) 3836 (all parts).
9.1.3 Valve body mark
9.2 Instructions for Use
When exiting the factory, the products shall be accompanied by instructions for use, and its
content shall at least include.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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