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 standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 19237-2003 Compressed natural gas dispenser for vehicle.
In addition to editorial changes, the following main technical changes have been made with respect to GB/T 19237-2003:
——Relevant technical requirements and test methods for compressed natural gas dispenser for vehicles under the rated working pressure of 35 MPa have been added (see Clauses 1, 4 and 5);
——Appropriate terms and definitions have been added, revised and deleted (see Clause 3; Clause 3 of the 2003 edition);
——Clause 4 “Model” has been deleted (Clause 4 of the 2003 edition);
——The structural composition and working principle have been modified (see 4.1; Clause 5 of the 2003 edition);
——“Basic functions” have been added (see 4.2);
——Technical requirements and test methods of compressive strength, gas tightness, electrical safety performance, indication error, repeatability, minimum measured amount, specified charge error, power failure protection and redisplay, environmental adaptability, power supply adaptability, electromagnetic compatibility, transportation adaptability, dispensing (bleeding) hose, breaking valve, etc. have been modified (see 4.3, 4.4 and Clause 5; 6.2, 6.3 and Clause 7 of the 2003 edition);
——The contents concerning tests on automatic stop dispensing once full and working stability haven been deleted (see 7.15 and 7.16 of the 2003 edition);
——Technical requirements and test methods for pressure-limiting protection and durability have been added (see 4.3.6, 4.3.12, 5.2.6 and 5.2.12);
——The inspection rules have been modified (see Clause 6; Clause 8 of the 2003 edition);
——“Labeling”, “Instructions for use” and “Sealing” have been added (see Clause 7 and 8.1);
——The contents in “marking, packaging, transportation and storage” haven been revised (see 7.1 and Clause 8; Clause 9 of the 2003 edition);
——Annex A “Working principle of compressed natural gas dispenser for vehicles”, Annex B “High-pressure gas flow standard device by mass method” and Annex C “High-pressure gas flow standard device by standard meter method” have been added.
This standard refers to R 139:2007 Compressed gaseous fuel measuring systems for vehicles of International Organization of Legal Metrology (OIML).
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee on Automobiles of Standardization Administration of China (SAC/TC 114).
The previous edition of this standard is as follows:
——GB/T 19237-2003.
Compressed natural gas dispenser for vehicles
1 Scope
This standard specifies requirements, test methods, inspection rules, marking, labeling, instructions for use, and sealing, packaging, transportation and storage of compressed natural gas dispenser for vehicles.
This standard is applicable to the design, manufacture and acceptance of compressed natural gas dispenser with a rated working pressures of 20 MPa and 35 MPa for vehicles.
2 Normative references
The following referenced documents are indispensable for the application 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 191 Packaging—Pictorial marking for handling of goods
GB/T 2423.1 Environmental testing—Part 2: Test methods—Tests A: Cold
GB/T 2423.2 Environmental testing—Part 2: Test methods—Tests B: Dry heat
GB/T 2423.4 Environmental testing for electric and electronic products—Part 2: Test method—Test Db: Damp heat, cyclic (12h+12h cycle)
GB/T 3683 Rubber hoses and hose assemblies—Wire-braid-reinforced hydraulic types for oil-based or water-based fluids—Specification
GB 3836.1 Explosive atmospheres—Part 1: Equipment —General requirements
GB 3836.2 Explosive atmospheres—Part 2: Equipment protection by flameproof enclosures “d”
GB 3836.3 Explosive atmospheres—Part 3: Equipment protection by increased safety "e”
GB 3836.4 Explosive atmospheres—Part 4: Equipment protection by intrinsic safety "i”
GB 3836.9 Explosive atmospheres—Part 9: Equipment protection by type of protection “m”
GB/T 4798.2 Environmental conditions existing in the application of electric and electronic products—Part 2: Transportation
GB 4943.1 Information technology equipment—Safety—Part 1: General requirements
GB/T 5563 Rubber and plastics hoses and hose assemblies—Hydrostatic testing
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB/T 10543 Rubber hoses and hose assemblies for aircraft ground fueling and defueling—Specification
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 14976 Seamless stainless steel pipes for fluid transport
GB/T 17626.2-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility—Testing and measurement techniques—Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test
GB/T 17626.5-2019 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test
GB/T 17626.11-2008 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips, short interruptions and voltage variations immunity tests
GB/T 19236 Fueling nozzle for CNG dispenser
GB 50058 Code for design of electrical installations in explosive atmospheres
GB 50156 Code for design and construction of automobile gasoline and gas filling station
JJG 996 Compressed natural gas dispensers
JTG B01 Technical standard of highway engineering
SY/T 6535 The underground storage well for high-compression gas
TSG 21-2016 Supervision Regulation on Safety Technology for Stationary Pressure Vessel
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
compressed natural gas dispenser for vehicles
special device for dispensing (bleeding) the compressed natural gas into (from) a gas storage container for vehicles, with functions such as metering and pricing
Note: For the purpose of this standard, “compressed natural gas dispenser for vehicles” is referred to as “dispenser”. Dispenser the maximum flow rate of which is not greater than 30 kg/min is termed as “small flow dispenser”; dispenser the maximum flow rate of which is greater than 30 kg/min and not greater than 70 kg/min is termed as “medium flow dispenser”; dispenser the maximum flow rate of which is greater than 70 kg/min is termed as “large flow dispenser”. Medium flow dispenser and large flow dispenser are also known as “dispensing (bleeding) pole”.
3.2
minimum measured amount
minimum amount dispensed that can meet the metering performance requirements of the dispenser in one dispensing exercise
3.3
minimum specified indication deviation
minimum mass resolution of the dispensed amount displayed by the indicating device of dispenser
3.4
minimum specified charge deviation
amount charged according to the minimum specified indication deviation in the dispensed amount of dispenser
3.5
specified charge error
difference between the charged amount displayed by the dispenser and the payable amount calculated according to the unit price and the indicated gas amount
3.6
flowtest region
flow varying region from the initial filled pressure to the maximum allowable filled pressure while dispensing a gas medium into the gas storage cylinder in the metering performance test
4 Requirements
4.1 Structural composition and working principle
The dispenser is generally composed of mass flow meter, electronic metering controller and accessories. The accessories are used for the dispenser to realize correct measurement and simplify operation, mainly including: inlet valve, gas filter, electromagnetic valve, one-way valve, safety valve, emergency cut-off valve, breaking valve, pressure sensor, pressure gauge, gas dispensing (bleeding) hose and gas dispensing gun, etc. See Annex A for the working principle of the dispenser.
4.2 Basic functions
4.2.1 Metering and pricing functions
The dispenser shall have the functions of metering and pricing.
Requirements for the functions of metering and pricing are as follows:
a) The amount of gas dispensed by the dispenser shall be metered by mass in kilograms (kg) or by mass flow rate in kilograms per minute (kg/min);
b) The charged amount of the dispenser is expressed by Chinese Yuan Renminbi (CNY) and the unit price is expressed by CNY per kilogram (CNY/kg).
4.2.2 Indication function
The dispenser shall have the indication function.
Requirements for the indication function of the dispenser are as follows:
a) Reading of indications shall be correct and legible.
b) The minimum specified indication deviation in dispensed amount shall be expressed in the form of 1×10n, 2×10n or 5×10n kg, where n is a positive integer or a negative integer or zero.
c) The dispenser shall display the dispensed amount, unit price and charged amount:
1) The dispensed amount in one single time shall be indicated with the integer not less than 3 digits and the decimal of 2 digits;
2) The charged amount for the dispensed amount in one single time shall be indicated with the integer not less than 3 digits and the decimal of 2 digits;
3) The unit price shall be indicated with the integer not less than 2 digits and the decimal of 2 digits;
4) The dispensed amount cumulative shall be indicated with the integer not less than 6 digits and the decimal of 2 digits.
d) The symbol of the metering unit of the dispenser shall be close to the indication.
e) When there are two or more indications of the dispenser, they shall be displayed separately.
f) The dispenser shall continuously display the indication of the dispensed amount during the dispensing process.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking, labeling and instruction for use
8 Sealing, packaging, transportation and storage
Annex A (Informative) Working principle of compressed natural gas dispenser for vehicles
Annex B (Normative) High-pressure gas flow standard device by mass method
Annex C (Normative) High-pressure gas flow standard device by standard meter method
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 standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 19237-2003 Compressed natural gas dispenser for vehicle.
In addition to editorial changes, the following main technical changes have been made with respect to GB/T 19237-2003:
——Relevant technical requirements and test methods for compressed natural gas dispenser for vehicles under the rated working pressure of 35 MPa have been added (see Clauses 1, 4 and 5);
——Appropriate terms and definitions have been added, revised and deleted (see Clause 3; Clause 3 of the 2003 edition);
——Clause 4 “Model” has been deleted (Clause 4 of the 2003 edition);
——The structural composition and working principle have been modified (see 4.1; Clause 5 of the 2003 edition);
——“Basic functions” have been added (see 4.2);
——Technical requirements and test methods of compressive strength, gas tightness, electrical safety performance, indication error, repeatability, minimum measured amount, specified charge error, power failure protection and redisplay, environmental adaptability, power supply adaptability, electromagnetic compatibility, transportation adaptability, dispensing (bleeding) hose, breaking valve, etc. have been modified (see 4.3, 4.4 and Clause 5; 6.2, 6.3 and Clause 7 of the 2003 edition);
——The contents concerning tests on automatic stop dispensing once full and working stability haven been deleted (see 7.15 and 7.16 of the 2003 edition);
——Technical requirements and test methods for pressure-limiting protection and durability have been added (see 4.3.6, 4.3.12, 5.2.6 and 5.2.12);
——The inspection rules have been modified (see Clause 6; Clause 8 of the 2003 edition);
——“Labeling”, “Instructions for use” and “Sealing” have been added (see Clause 7 and 8.1);
——The contents in “marking, packaging, transportation and storage” haven been revised (see 7.1 and Clause 8; Clause 9 of the 2003 edition);
——Annex A “Working principle of compressed natural gas dispenser for vehicles”, Annex B “High-pressure gas flow standard device by mass method” and Annex C “High-pressure gas flow standard device by standard meter method” have been added.
This standard refers to R 139:2007 Compressed gaseous fuel measuring systems for vehicles of International Organization of Legal Metrology (OIML).
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee on Automobiles of Standardization Administration of China (SAC/TC 114).
The previous edition of this standard is as follows:
——GB/T 19237-2003.
Compressed natural gas dispenser for vehicles
1 Scope
This standard specifies requirements, test methods, inspection rules, marking, labeling, instructions for use, and sealing, packaging, transportation and storage of compressed natural gas dispenser for vehicles.
This standard is applicable to the design, manufacture and acceptance of compressed natural gas dispenser with a rated working pressures of 20 MPa and 35 MPa for vehicles.
2 Normative references
The following referenced documents are indispensable for the application 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 191 Packaging—Pictorial marking for handling of goods
GB/T 2423.1 Environmental testing—Part 2: Test methods—Tests A: Cold
GB/T 2423.2 Environmental testing—Part 2: Test methods—Tests B: Dry heat
GB/T 2423.4 Environmental testing for electric and electronic products—Part 2: Test method—Test Db: Damp heat, cyclic (12h+12h cycle)
GB/T 3683 Rubber hoses and hose assemblies—Wire-braid-reinforced hydraulic types for oil-based or water-based fluids—Specification
GB 3836.1 Explosive atmospheres—Part 1: Equipment —General requirements
GB 3836.2 Explosive atmospheres—Part 2: Equipment protection by flameproof enclosures “d”
GB 3836.3 Explosive atmospheres—Part 3: Equipment protection by increased safety "e”
GB 3836.4 Explosive atmospheres—Part 4: Equipment protection by intrinsic safety "i”
GB 3836.9 Explosive atmospheres—Part 9: Equipment protection by type of protection “m”
GB/T 4798.2 Environmental conditions existing in the application of electric and electronic products—Part 2: Transportation
GB 4943.1 Information technology equipment—Safety—Part 1: General requirements
GB/T 5563 Rubber and plastics hoses and hose assemblies—Hydrostatic testing
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB/T 10543 Rubber hoses and hose assemblies for aircraft ground fueling and defueling—Specification
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 14976 Seamless stainless steel pipes for fluid transport
GB/T 17626.2-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility—Testing and measurement techniques—Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test
GB/T 17626.5-2019 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test
GB/T 17626.11-2008 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips, short interruptions and voltage variations immunity tests
GB/T 19236 Fueling nozzle for CNG dispenser
GB 50058 Code for design of electrical installations in explosive atmospheres
GB 50156 Code for design and construction of automobile gasoline and gas filling station
JJG 996 Compressed natural gas dispensers
JTG B01 Technical standard of highway engineering
SY/T 6535 The underground storage well for high-compression gas
TSG 21-2016 Supervision Regulation on Safety Technology for Stationary Pressure Vessel
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
compressed natural gas dispenser for vehicles
special device for dispensing (bleeding) the compressed natural gas into (from) a gas storage container for vehicles, with functions such as metering and pricing
Note: For the purpose of this standard, “compressed natural gas dispenser for vehicles” is referred to as “dispenser”. Dispenser the maximum flow rate of which is not greater than 30 kg/min is termed as “small flow dispenser”; dispenser the maximum flow rate of which is greater than 30 kg/min and not greater than 70 kg/min is termed as “medium flow dispenser”; dispenser the maximum flow rate of which is greater than 70 kg/min is termed as “large flow dispenser”. Medium flow dispenser and large flow dispenser are also known as “dispensing (bleeding) pole”.
3.2
minimum measured amount
minimum amount dispensed that can meet the metering performance requirements of the dispenser in one dispensing exercise
3.3
minimum specified indication deviation
minimum mass resolution of the dispensed amount displayed by the indicating device of dispenser
3.4
minimum specified charge deviation
amount charged according to the minimum specified indication deviation in the dispensed amount of dispenser
3.5
specified charge error
difference between the charged amount displayed by the dispenser and the payable amount calculated according to the unit price and the indicated gas amount
3.6
flowtest region
flow varying region from the initial filled pressure to the maximum allowable filled pressure while dispensing a gas medium into the gas storage cylinder in the metering performance test
4 Requirements
4.1 Structural composition and working principle
The dispenser is generally composed of mass flow meter, electronic metering controller and accessories. The accessories are used for the dispenser to realize correct measurement and simplify operation, mainly including: inlet valve, gas filter, electromagnetic valve, one-way valve, safety valve, emergency cut-off valve, breaking valve, pressure sensor, pressure gauge, gas dispensing (bleeding) hose and gas dispensing gun, etc. See Annex A for the working principle of the dispenser.
4.2 Basic functions
4.2.1 Metering and pricing functions
The dispenser shall have the functions of metering and pricing.
Requirements for the functions of metering and pricing are as follows:
a) The amount of gas dispensed by the dispenser shall be metered by mass in kilograms (kg) or by mass flow rate in kilograms per minute (kg/min);
b) The charged amount of the dispenser is expressed by Chinese Yuan Renminbi (CNY) and the unit price is expressed by CNY per kilogram (CNY/kg).
4.2.2 Indication function
The dispenser shall have the indication function.
Requirements for the indication function of the dispenser are as follows:
a) Reading of indications shall be correct and legible.
b) The minimum specified indication deviation in dispensed amount shall be expressed in the form of 1×10n, 2×10n or 5×10n kg, where n is a positive integer or a negative integer or zero.
c) The dispenser shall display the dispensed amount, unit price and charged amount:
1) The dispensed amount in one single time shall be indicated with the integer not less than 3 digits and the decimal of 2 digits;
2) The charged amount for the dispensed amount in one single time shall be indicated with the integer not less than 3 digits and the decimal of 2 digits;
3) The unit price shall be indicated with the integer not less than 2 digits and the decimal of 2 digits;
4) The dispensed amount cumulative shall be indicated with the integer not less than 6 digits and the decimal of 2 digits.
d) The symbol of the metering unit of the dispenser shall be close to the indication.
e) When there are two or more indications of the dispenser, they shall be displayed separately.
f) The dispenser shall continuously display the indication of the dispensed amount during the dispensing process.
Contents of GB/T 19237-2021
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking, labeling and instruction for use
8 Sealing, packaging, transportation and storage
Annex A (Informative) Working principle of compressed natural gas dispenser for vehicles
Annex B (Normative) High-pressure gas flow standard device by mass method
Annex C (Normative) High-pressure gas flow standard device by standard meter method
