1 Scope
This standard specifies the terms and definitions of integrated oil burners and gas burners for industrial boilers, and specifies the technical requirements, tests, paints, packaging, marks and accompanying documents of the burners.
This standard is applicable to the performance evaluation of integrated automatic pressure atomization oil burners and blast gas burners (hereinafter referred to as burners) for industrial boilers with an output power not less than 60kW.
2 normative references
The clauses in the following documents become the clauses of this standard through the reference of this standard. For dated references, all subsequent amendments (excluding errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement based on this standard to study whether the latest versions of these documents can be used . For undated references, the latest version applies to this standard.
GB/T 2888 Fan and Roots Blower Noise Measurement Method
GB 4706.1 Safety of Household and Similar Electrical Appliances Part 1: General Requirements
GB/T 14048.1—2000 General Rules for Low-voltage Switchgear and Control
3 Terms and Definitions
3.1 Integrated oil burner oil burners of the monobloc type
Combination of various components including fan, fuel supply and atomization, ignition, flame monitoring, operation regulation and control, etc.
Note: The various components of the combination are fixed to each other or installed on the same frame or in the same casing.
3.2 Integrated gas burner gas burners of the monobloc type
Combination of various components including fan, gas supply, flame monitoring, operation regulation and control, etc.
Note: The various components of the combination are fixed to each other or installed on the same frame or in the same casing.
3.3 pressure atomization pressure atomization
The fuel is used to generate a certain pressure to atomize the oil through the nozzle.
3.4 burner back pressure exit pressure of burners
The maximum pressure that the outlet flue gas of the burner can overcome under a certain power, Pa.
3.5 output power output power
Under a certain back pressure, the heat released by the burner during combustion per hour, kW.
3.6 Maximum output power maximum output power
The maximum heat released by the burner during combustion per hour indicated by the burner manufacturer, kW.
3.7 minimum output power minimum output power
The minimum heat released by the burner within an hour of combustion indicated by the burner manufacturer, kW.
3.8 safety time safety time
The maximum time, s, that the controls allow for the release of fuel when no flame is present.
3.9 ignition safety time ignition safety time
The time, in s, from the instant the fuel is released at ignition to the closure of the indicated fuel shut-off valve due to the absence of flame.
3.10 extinguishment safety time extinction safety time
The time from the moment the flame disappears to the closing of the indicated fuel cut-off valve during operation, s.
3.11 steady combustion state
When the burner is running at the rated voltage and the specified fuel for combustion, check twice at an interval of 15 minutes: the change of fuel (gas) consumption per hour is less than 2%, the change of flue gas temperature is less than 5°C, and the CO2 content in the flue gas A state where the change is less than 0.2%.
3.12 combustion adjustment ratio firing ratio
The ratio of maximum to minimum fuel consumption of the burner.
3.13 main flame main flame
Flame burning on the main combustion nozzle.
3.14 start flame start flame
The flame that is lit first to ignite the main flame. Its power: the minimum output power for oil burners; see Appendix B for the selection of ignition devices for gas burners.
3.15 oil viscosity oil viscosity
Kinematic viscosity of fuel oil at specified temperature, mm2/s.
3.16 filter, filter screen filter /strainer
A device that cuts off and collects solid particles, fibers and other impurities in the fuel that will affect the operation of the burner.
3.17 Flame monitor flame detector device
A device used to inspect the state of a combustion flame.
3.18 Gas valve close position indicator gas valve close position indicator
The information displayed when the gas shut-off valve is closed reflects the closing degree of the valve.
3.19 Pre-purge time pre-purge time
After the fan is started, the duration of the air purging process between the damper opening to the set value and the ignition of the ignition device, S.
3.20 post-purge
The blowing process of the blower after a safety interruption or a control interruption.
3.21 Safety pre-check program pre-start safety check stage
A series of system safety testing procedures are carried out before the start of the fan to confirm the safety and reliability of the system before the start of the fan. See Appendix A for the pre-check items.
3.22 Safety stop safety shut down
When the program is in progress, the protection system operates to cut off all fuel supply in time to stop ignition or combustion, and the program controller automatically resets.
3.23 lock lock out
During the program, the protection system operates to cut off all fuel supply in time to stop ignition or combustion. It is necessary to manually check the cause and repair the fault. It can be restarted after manual reset.
4 technical requirements
4.1 Performance requirements of the burner
4.1.1 Output power
The deviation between the measured output power of the burner and the output power indicated by the burner manufacturer shall not exceed 5%.
4.1.2 Smoke composition, smoke blackness
Under stable combustion conditions, the CO content in the fuel burner flue gas should be less than 125mg/m3, and the NOX content should be less than 300mg/m3; the CO content in the gas burner flue gas should be less than 95mg/m3, and the NOX content should be less than 200mg/m3 ; The CmHn content in the burner flue gas should be less than 20mg/m3, the dust content of the flue gas should be less than 50mg/m3, and the blackness of the flue gas should not be greater than Ringelmann Class I.
4.1.3 Excess air ratio
The burner should make the excess air coefficient α in the flue gas not greater than 1.2 under the rated output power.
4.1.4 Environmental adaptability
At an ambient temperature of -10°C to 50°C, the burner should be able to start and operate normally.
4.1.5 Voltage adaptability
When the voltage fluctuates within the range of 85% to 110% of the rated voltage, the burner should be able to start and run normally.
1 Scope
This standard specifies the terms and definitions of integrated oil burners and gas burners for industrial boilers, and specifies the technical requirements, tests, paints, packaging, marks and accompanying documents of the burners.
This standard is applicable to the performance evaluation of integrated automatic pressure atomization oil burners and blast gas burners (hereinafter referred to as burners) for industrial boilers with an output power not less than 60kW.
2 normative references
The clauses in the following documents become the clauses of this standard through the reference of this standard. For dated references, all subsequent amendments (excluding errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement based on this standard to study whether the latest versions of these documents can be used . For undated references, the latest version applies to this standard.
GB/T 2888 Fan and Roots Blower Noise Measurement Method
GB 4706.1 Safety of Household and Similar Electrical Appliances Part 1: General Requirements
GB/T 14048.1—2000 General Rules for Low-voltage Switchgear and Control
3 Terms and Definitions
3.1 Integrated oil burner oil burners of the monobloc type
Combination of various components including fan, fuel supply and atomization, ignition, flame monitoring, operation regulation and control, etc.
Note: The various components of the combination are fixed to each other or installed on the same frame or in the same casing.
3.2 Integrated gas burner gas burners of the monobloc type
Combination of various components including fan, gas supply, flame monitoring, operation regulation and control, etc.
Note: The various components of the combination are fixed to each other or installed on the same frame or in the same casing.
3.3 pressure atomization pressure atomization
The fuel is used to generate a certain pressure to atomize the oil through the nozzle.
3.4 burner back pressure exit pressure of burners
The maximum pressure that the outlet flue gas of the burner can overcome under a certain power, Pa.
3.5 output power output power
Under a certain back pressure, the heat released by the burner during combustion per hour, kW.
3.6 Maximum output power maximum output power
The maximum heat released by the burner during combustion per hour indicated by the burner manufacturer, kW.
3.7 minimum output power minimum output power
The minimum heat released by the burner within an hour of combustion indicated by the burner manufacturer, kW.
3.8 safety time safety time
The maximum time, s, that the controls allow for the release of fuel when no flame is present.
3.9 ignition safety time ignition safety time
The time, in s, from the instant the fuel is released at ignition to the closure of the indicated fuel shut-off valve due to the absence of flame.
3.10 extinguishment safety time extinction safety time
The time from the moment the flame disappears to the closing of the indicated fuel cut-off valve during operation, s.
3.11 steady combustion state
When the burner is running at the rated voltage and the specified fuel for combustion, check twice at an interval of 15 minutes: the change of fuel (gas) consumption per hour is less than 2%, the change of flue gas temperature is less than 5°C, and the CO2 content in the flue gas A state where the change is less than 0.2%.
3.12 combustion adjustment ratio firing ratio
The ratio of maximum to minimum fuel consumption of the burner.
3.13 main flame main flame
Flame burning on the main combustion nozzle.
3.14 start flame start flame
The flame that is lit first to ignite the main flame. Its power: the minimum output power for oil burners; see Appendix B for the selection of ignition devices for gas burners.
3.15 oil viscosity oil viscosity
Kinematic viscosity of fuel oil at specified temperature, mm2/s.
3.16 filter, filter screen filter /strainer
A device that cuts off and collects solid particles, fibers and other impurities in the fuel that will affect the operation of the burner.
3.17 Flame monitor flame detector device
A device used to inspect the state of a combustion flame.
3.18 Gas valve close position indicator gas valve close position indicator
The information displayed when the gas shut-off valve is closed reflects the closing degree of the valve.
3.19 Pre-purge time pre-purge time
After the fan is started, the duration of the air purging process between the damper opening to the set value and the ignition of the ignition device, S.
3.20 post-purge
The blowing process of the blower after a safety interruption or a control interruption.
3.21 Safety pre-check program pre-start safety check stage
A series of system safety testing procedures are carried out before the start of the fan to confirm the safety and reliability of the system before the start of the fan. See Appendix A for the pre-check items.
3.22 Safety stop safety shut down
When the program is in progress, the protection system operates to cut off all fuel supply in time to stop ignition or combustion, and the program controller automatically resets.
3.23 lock lock out
During the program, the protection system operates to cut off all fuel supply in time to stop ignition or combustion. It is necessary to manually check the cause and repair the fault. It can be restarted after manual reset.
4 technical requirements
4.1 Performance requirements of the burner
4.1.1 Output power
The deviation between the measured output power of the burner and the output power indicated by the burner manufacturer shall not exceed 5%.
4.1.2 Smoke composition, smoke blackness
Under stable combustion conditions, the CO content in the fuel burner flue gas should be less than 125mg/m3, and the NOX content should be less than 300mg/m3; the CO content in the gas burner flue gas should be less than 95mg/m3, and the NOX content should be less than 200mg/m3 ; The CmHn content in the burner flue gas should be less than 20mg/m3, the dust content of the flue gas should be less than 50mg/m3, and the blackness of the flue gas should not be greater than Ringelmann Class I.
4.1.3 Excess air ratio
The burner should make the excess air coefficient α in the flue gas not greater than 1.2 under the rated output power.
4.1.4 Environmental adaptability
At an ambient temperature of -10°C to 50°C, the burner should be able to start and operate normally.
4.1.5 Voltage adaptability
When the voltage fluctuates within the range of 85% to 110% of the rated voltage, the burner should be able to start and run normally.