The function of the fuel system is to ensure the fuel required for the burner to burn. The fuel system of the oil burner mainly includes: oil pipes and joints, oil pumps, solenoid valves, nozzles, and heavy oil preheaters.
Oil pipes and joints: used to transmit fuel.
Oil pump: a mechanism that produces pressurized oil. The output oil pressure is generally above 10 bar to meet the requirements of atomization and fuel injection. It is divided into single-tube output and double-tube output. Some burner oil pumps are coaxially connected to the fan motor, and some are driven by a separate oil pump motor. Common oil pumps are J-type, E-type and TA-type, which are suitable for single-tube and double-tube oil systems. There are filters, pressure regulating valves and stop valves in the oil pump. The filter is mainly to protect the transmission mechanism. The mesh of the E-type pump filter is larger. When the filter is blocked, it will cause excessive vacuum. The filter should be cleaned regularly. After cleaning or replacing the filter, it is necessary to ensure that the pump cover is tightly sealed. Before the oil pump is running, oil must be poured into the suction side oil pipe to overflow the pump, otherwise the pump will be damaged due to dry operation. The suction resistance of the oil pump suction port cannot exceed 0.4 bar, and the pressure of the output port is generally 10~24 bar. The oil supply pressure of the J-type pump is 20 bar, the maximum oil supply pressure of the E-type and TA-type pumps is 40 bar, and the oil supply temperature is 90℃.
Solenoid valve: used to control the on and off of the oil circuit, mostly two-way valves and three-way valves. Nozzle: The main function is to atomize oil droplets. The main parameters of the oil nozzle are the injection angle (30°, 45°, 60°, 80°), the injection method (solid, hollow, semi-hollow) and the amount of oil injection. Under the same pressure, the nozzle with a smaller amount of oil injection has a better atomization effect. Commonly used oil nozzles include simple mechanical atomizing nozzles and return oil mechanical atomizing nozzles. The former has a simple structure, a simple system, and is relatively reliable. It is generally used for burners with smaller loads. The latter has a more complex structure and system, but has good adjustment characteristics and is suitable for boiler loads that often have a large range of adjustments. Simple mechanical atomizing nozzles include tangential slot type and tangential hole type. The former has a larger atomizing angle and smaller atomized particles.
Heavy oil preheater: a special device of heavy oil burner, used to heat heavy oil to a certain temperature, reduce viscosity, and increase heavy oil atomization effect. Its temperature control device is interlocked with the burner control circuit.
The function of the fuel system is to ensure the fuel required for the burner to burn. The fuel system of the oil burner mainly includes: oil pipes and joints, oil pumps, solenoid valves, nozzles, and heavy oil preheaters.
Oil pipes and joints: used to transmit fuel.
Oil pump: a mechanism that produces pressurized oil. The output oil pressure is generally above 10 bar to meet the requirements of atomization and fuel injection. It is divided into single-tube output and double-tube output. Some burner oil pumps are coaxially connected to the fan motor, and some are driven by a separate oil pump motor. Common oil pumps are J-type, E-type and TA-type, which are suitable for single-tube and double-tube oil systems. There are filters, pressure regulating valves and stop valves in the oil pump. The filter is mainly to protect the transmission mechanism. The mesh of the E-type pump filter is larger. When the filter is blocked, it will cause excessive vacuum. The filter should be cleaned regularly. After cleaning or replacing the filter, it is necessary to ensure that the pump cover is tightly sealed. Before the oil pump is running, oil must be poured into the suction side oil pipe to overflow the pump, otherwise the pump will be damaged due to dry operation. The suction resistance of the oil pump suction port cannot exceed 0.4 bar, and the pressure of the output port is generally 10~24 bar. The oil supply pressure of the J-type pump is 20 bar, the maximum oil supply pressure of the E-type and TA-type pumps is 40 bar, and the oil supply temperature is 90℃.
Solenoid valve: used to control the on and off of the oil circuit, mostly two-way valves and three-way valves. Nozzle: The main function is to atomize oil droplets. The main parameters of the oil nozzle are the injection angle (30°, 45°, 60°, 80°), the injection method (solid, hollow, semi-hollow) and the amount of oil injection. Under the same pressure, the nozzle with a smaller amount of oil injection has a better atomization effect. Commonly used oil nozzles include simple mechanical atomizing nozzles and return oil mechanical atomizing nozzles. The former has a simple structure, a simple system, and is relatively reliable. It is generally used for burners with smaller loads. The latter has a more complex structure and system, but has good adjustment characteristics and is suitable for boiler loads that often have a large range of adjustments. Simple mechanical atomizing nozzles include tangential slot type and tangential hole type. The former has a larger atomizing angle and smaller atomized particles.
Heavy oil preheater: a special device of heavy oil burner, used to heat heavy oil to a certain temperature, reduce viscosity, and increase heavy oil atomization effect. Its temperature control device is interlocked with the burner control circuit.