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Classification of low nitrogen burners

Writer: admin Time:2021-09-17 00:00 Browse:

When the biomass burner is running, it is necessary to ensure that there is enough bottom wind and a uniform material to get a good job effect. So the classification of low nitrogen burners
	Classification of low nitrogen burners

Classification of low nitrogen burners
The burner is a highly automated generic integrated device, which can be divided into five major systems from its implementation: air supply system, ignition system, monitoring system, fuel system, electron control system. 1 Air supply system: The function of the air supply system is to send air into the combustion chamber, the main components are: housing, fan motor, fan impeller, wind gun, damper controller, wind door board , Diffusion disk. Housing: It is the main component of the mounting bracket and fresh air blowing passage of each component of the low nitrogen burner. From the shape, it can be divided into two types of boxes and guns. Most of the box burners have a housing of injection molding materials, and the power is generally small, and most of the power burner uses a split housing, typically a gun. The composition of the housing is generally high in light alloy castings. Fan motor: Mainly providing power for the operation of the fan impeller and the high pressure oil pump, and some burners are powered by a separate motor. Some small power burners use single-phase motors with a relatively small power, most of the burners use three-phase motors, and the motor is only rotated in the determined direction to make the burner work normally. Fan impeller: A sufficient wind pressure is generated by high-speed rotation to overcome the resistance of the furnace and the chimney resistance, and a sufficient air is blown into the combustion chamber to meet the needs of combustion. It consists of a cylindrical wheel with a blade with a certain inclination angle. Its composition material is generally high-strength light alloy steel, and there is also an injection molded product, and all qualified fan impellers have good dynamic balance performance. Air gun tube: The role of guiding airflow and stabilizing wind pressure is also an integral part of the inlet air, generally has a jacket flange to join the furnace. Its constituent materials are generally high strength and high temperature-resistant alloy steel. Door controller: is a driving device that controls the rotation of the wind door base by mechanical link. Generally there are two types of hydraulic drive controllers and servo motor drive controllers, the former is stable, not easy to produce faults, the latter is accurate, and the air volume changes smooth. Tool door board: The main role is to adjust the size of the wind gate to control the amount of air supply. Its constituent materials have two types of injection molding and alloys. The injection molding plates are generally in single-chip, alloy baffles have a monolithic, double-slice, and three pieces of combination form. Delivery disc: Its special structure can generate a rotating airflow, which helps air and fuel mixing while adjusting the temperature of the secondary air. The function of the 2 ignition system ignition system is to ignite the mixture of air and fuel, and its main components are: ignition transformers, ignition electrodes, and electric high voltage cables. Ignition transformer: It is a conversion element that produces high voltage output. The output voltage is generally: 2 × 5kV, 2 × 6kV, 2 × 7 kV, and the output current is generally 15 to 30 mA. Ignition Electrode: Convert high voltage electrical energy into light energy and thermal energy in the form of arc discharge to fuel fuel. There are generally two types and split formulas. Electrical and high voltage cable: Its function is to transmit electrical energy. The function of the 3 low nitrogen burner detection system monitoring system is to ensure the safe operation of the burner, and its main components are flame monitors. Flame Monitor: Its main role is to monitor the formation of flames and produce signal reporting program. The flame detector has three main types of photosensitive resistance, ultraviolet UV electropamental and ionizing electrodes. Take UV UV Electropa as an example. Ultraviolet UV Electropament is generally used on an oil and gas dual-purpose burner that can only feel the ultraviolet rays in the flame (spectral range 190 ~ 270 nm), and the UV tube does not flash the refractory refractory material in the furnace, ordinary light or furnace Glow substances have responded. If it accepts a sufficient amount of ultraviolet rays, it can generate current and passed properly, through the flame relay, to close it. Even little oil will block the path of ultraviolet rays into the photoelectric tube, causing the internal sensing elements to receive a sufficient amount of ultraviolet rays without working. Therefore, the photoelectric tube must be thoroughly cleaned. 4 The function of the fuel system fuel system is to ensure the fuel required for burner combustion. The fuel system of low nitrogen burners is mainly: tubing and joint, oil pump, solenoid valve, nozzle, filter. Tubes and joints: for transmitting fuel. Oil pump: a mechanism for generating pressure oil to meet atomization and injector requirements, divided into single tube output and double pipe output. Some burner oil pumps are cohaxable with the fan motor, and some have a separate oil pump motor drive. The filter is mainly to protect the transmission mechanism. When the filter is blocked, it can cause overall vacuum, and the filter must be cleaned, cleaned or replaced, and must ensure that the pump cover is closely sealed. Before running, the oil pump must be absorbed from the lateral oil pipe to the pump, otherwise, the pump is damaged due to dry operation. Solar valve: Used to control the opening of the oil passage, mostly the two-way valve and the three-way valve. Nozzle: The main role is atomized oil droplets. Under the same pressure, the nozzle of the smaller injector, the atomization effect is better. Commonly used oil tissue has a simple mechanical atomization nozzle and an oil return mechanical atomization nozzle, the former structure is simple, the system is simple, and it is more reliable. It is generally used for smaller load burners, but the latter structure and system are complex, but Good adjustment characteristics, suitable for boiler loads often have a large range of regulation. Filter: Its action is to prevent impurities from entering the solenoid valve group and the burner. 5 Electronic control system Electronic control systems are the command centers and contact centers of the above systems. The main control components are program controllers. They are equipped with different programmators for different burners. Common program controllers are: LFL series, LAL series, LOA Series, LGB series, which mainly distinguishes different times for each program step. focus on