Burners are more and more common in people's lives, and are closely related to our lives. The structure of the burner is introduced below for everyone to understand the burner more clearly.
1. Fuel system
The function of the fuel system is to ensure that the burner burns the required fuel. The fuel system of the oil burner mainly includes: oil pipes and joints, oil pumps, solenoid valves, nozzles, and heavy oil preheaters. Gas burners mainly include filters, pressure regulators, solenoid valves, combustion solenoid valves, and fuel butterfly valves.
2. Combustion system
The function of the combustion system is to ignite the mixture of air and fuel. Its main components are: combustion transformer, combustion electrode, and electric fire high-voltage cable.
3. Monitoring system
The function of the monitoring system is to ensure the safe and stable operation of the burner. Its main components include flame monitors, pressure monitors, and temperature monitors.
4. Air supply system
As a mechatronic equipment with a high degree of automation, the burner can be divided into five major systems from the functions it completes: air supply system, combustion system, monitoring system, fuel system, and electric control system.
The function of the air supply system is to send air with a certain wind speed and air volume into the combustion chamber. Its main components are: housing, fan motor, fan impeller, air gun fire tube, damper controller, damper baffle, cam adjustment mechanism, Slack disk.
5. Electronic control system
The electric control system is the command base and contact base of the above systems. The main control element is the program controller. Different program controllers are equipped for different burners. The common program controllers are: LFL series, LAL series, LOA series , LGB series, the main difference is that the time of each program process is different.
Burners can be divided into three types according to the fuel they burn: pulverized coal burners, oil burners and gas burners.
There are two types of pulverized coal burners: swirl type and direct flow type.
① Swirl type pulverized coal burner: It is mainly composed of a primary air swirler, a secondary air conditioning baffle (swirl blade or volute), and primary and secondary air nozzles. It can be placed on the front wall, both side walls or the front and back walls of the combustion chamber. The air for conveying pulverized coal is called primary air, which accounts for about 15-30% of the total air volume required for combustion. The pulverized coal air mixture is injected into the combustion chamber through the primary air nozzle of the burner. Another part of the air required for combustion is called secondary air. The secondary air passes through the conditioning baffle (swirl vane or volute) of the burner to form a swirling airflow, and forms a swirling jet at the outlet of the burner with the primary wind. The negative pressure formed by the jet base entrains the high-temperature smoke to the root of the flame. These high-temperature flue gases are the primary heat source for pulverized coal fires. The diffuser cone at the primary air outlet can increase the dispersion angle of the primary air to enhance the entrainment effect of high-temperature flue gas.
② Once-through pulverized coal burner: It usually consists of several groups of primary and secondary air nozzles placed along the height, and is placed on each corner of the combustion chamber. The base line of the burner is tangent to an imaginary circle in the center of the combustion chamber, thereby forming a horizontally rotating updraft in the combustion chamber. The primary and secondary air nozzles of each group of once-through burners are scattered to meet the needs of stable and complete combustion of different coal types, and sometimes consider reducing the generation of nitrogen oxides.
Burners are more and more common in people's lives, and are closely related to our lives. The structure of the burner is introduced below for everyone to understand the burner more clearly.
1. Fuel system
The function of the fuel system is to ensure that the burner burns the required fuel. The fuel system of the oil burner mainly includes: oil pipes and joints, oil pumps, solenoid valves, nozzles, and heavy oil preheaters. Gas burners mainly include filters, pressure regulators, solenoid valves, combustion solenoid valves, and fuel butterfly valves.
2. Combustion system
The function of the combustion system is to ignite the mixture of air and fuel. Its main components are: combustion transformer, combustion electrode, and electric fire high-voltage cable.
3. Monitoring system
The function of the monitoring system is to ensure the safe and stable operation of the burner. Its main components include flame monitors, pressure monitors, and temperature monitors.
4. Air supply system
As a mechatronic equipment with a high degree of automation, the burner can be divided into five major systems from the functions it completes: air supply system, combustion system, monitoring system, fuel system, and electric control system.
The function of the air supply system is to send air with a certain wind speed and air volume into the combustion chamber. Its main components are: housing, fan motor, fan impeller, air gun fire tube, damper controller, damper baffle, cam adjustment mechanism, Slack disk.
5. Electronic control system
The electric control system is the command base and contact base of the above systems. The main control element is the program controller. Different program controllers are equipped for different burners. The common program controllers are: LFL series, LAL series, LOA series , LGB series, the main difference is that the time of each program process is different.
Burners can be divided into three types according to the fuel they burn: pulverized coal burners, oil burners and gas burners.
There are two types of pulverized coal burners: swirl type and direct flow type.
① Swirl type pulverized coal burner: It is mainly composed of a primary air swirler, a secondary air conditioning baffle (swirl blade or volute), and primary and secondary air nozzles. It can be placed on the front wall, both side walls or the front and back walls of the combustion chamber. The air for conveying pulverized coal is called primary air, which accounts for about 15-30% of the total air volume required for combustion. The pulverized coal air mixture is injected into the combustion chamber through the primary air nozzle of the burner. Another part of the air required for combustion is called secondary air. The secondary air passes through the conditioning baffle (swirl vane or volute) of the burner to form a swirling airflow, and forms a swirling jet at the outlet of the burner with the primary wind. The negative pressure formed by the jet base entrains the high-temperature smoke to the root of the flame. These high-temperature flue gases are the primary heat source for pulverized coal fires. The diffuser cone at the primary air outlet can increase the dispersion angle of the primary air to enhance the entrainment effect of high-temperature flue gas.
② Once-through pulverized coal burner: It usually consists of several groups of primary and secondary air nozzles placed along the height, and is placed on each corner of the combustion chamber. The base line of the burner is tangent to an imaginary circle in the center of the combustion chamber, thereby forming a horizontally rotating updraft in the combustion chamber. The primary and secondary air nozzles of each group of once-through burners are scattered to meet the needs of stable and complete combustion of different coal types, and sometimes consider reducing the generation of nitrogen oxides.