Pressure jet burner, type KBO-E 1
Burner description
The KBO-E burner is a pressure jet burner of the monoblock type designed for modulating operation. It is capable of burning marine diesel oil, MDO with a viscosity of min. 4 cSt. at 20°C. Marine gas oil with a viscosity of min. 1.5 cSt. at 40°C. And heavy fuel oil HFO, with a viscosity of max. 700 cSt. at 50°C. All internal pipes are traced. The design of the burner makes installation, adjustment and servicing easy. Furthermore, it ensures that the flame is kept highly stable at all loads.
The burner housing is mounted on the boiler front with a hinged flange that can be turned either to left or right. In case of burner swing out during operation a micro switch stops the burner.
The electrical fan motor is fitted on the side of the housing and is directly connected to the fan wheel. A pressure switch monitors and secures against too low combustion air pressure. In case of too high oil pressure after the oil regulator a pressure switch shuts down the burner.
A combustion head and diffuser disc are placed in front of the nozzle with the purpose of mixing air and oil mist into a suitable mixture.
The oil is supplied through a ring line system and connections to the burner unit are made of flexible hoses.
Heavy fuel oil is heated in the pre-heater. The oil atomising temperature is controlled by an electronic regulator which has to be set so that the viscosity of the heavy fuel oil at the nozzle is between 14 – 16 cSt.
Heating cartridges are placed in the solenoid valves and nozzle head in order to keep a sufficiently high temperature close to the nozzle.
The burner operation is handled by the control system. Electric signals corresponding to the pressure gauge board signals are processed in the control system. Start/stop signals as well as load regulation impulses are then send to the two servo motors, which drive the oil regulator and air dampers respectively.In the event of fault conditions the oil supply is always interrupted immediately.
The oil regulator regulates the oil flow through the nozzle by increasing or decreasing the flow resistance. This causes that more or less oil is pressed through the nozzle as the supply pressure from the oil pump is constant. The air dampers are connected directly to the second servo motor. The control system provides the regulation of the air quantity in proportion to the oil quantity fired.
When the burner starts, and the ignition sequence step is reached, the oil flame is ignited by means of the two ignition electrodes which are connected to a high voltage ignition transformer. The electrodes are mounted just above the oil nozzle.
Flame failure during start-up and normal operation is detected by photo cells mounted on the burner unit and coupled to the control system. By loss of flame, the flame failure equipment will automatically shut down the burner.
Burner description
The KBO-E burner is a pressure jet burner of the monoblock type designed for modulating operation. It is capable of burning marine diesel oil, MDO with a viscosity of min. 4 cSt. at 20°C. Marine gas oil with a viscosity of min. 1.5 cSt. at 40°C. And heavy fuel oil HFO, with a viscosity of max. 700 cSt. at 50°C. All internal pipes are traced. The design of the burner makes installation, adjustment and servicing easy. Furthermore, it ensures that the flame is kept highly stable at all loads.
The burner housing is mounted on the boiler front with a hinged flange that can be turned either to left or right. In case of burner swing out during operation a micro switch stops the burner.
The electrical fan motor is fitted on the side of the housing and is directly connected to the fan wheel. A pressure switch monitors and secures against too low combustion air pressure. In case of too high oil pressure after the oil regulator a pressure switch shuts down the burner.
A combustion head and diffuser disc are placed in front of the nozzle with the purpose of mixing air and oil mist into a suitable mixture.
The oil is supplied through a ring line system and connections to the burner unit are made of flexible hoses.
Heavy fuel oil is heated in the pre-heater. The oil atomising temperature is controlled by an electronic regulator which has to be set so that the viscosity of the heavy fuel oil at the nozzle is between 14 – 16 cSt.
Heating cartridges are placed in the solenoid valves and nozzle head in order to keep a sufficiently high temperature close to the nozzle.
The burner operation is handled by the control system. Electric signals corresponding to the pressure gauge board signals are processed in the control system. Start/stop signals as well as load regulation impulses are then send to the two servo motors, which drive the oil regulator and air dampers respectively.In the event of fault conditions the oil supply is always interrupted immediately.
The oil regulator regulates the oil flow through the nozzle by increasing or decreasing the flow resistance. This causes that more or less oil is pressed through the nozzle as the supply pressure from the oil pump is constant. The air dampers are connected directly to the second servo motor. The control system provides the regulation of the air quantity in proportion to the oil quantity fired.
When the burner starts, and the ignition sequence step is reached, the oil flame is ignited by means of the two ignition electrodes which are connected to a high voltage ignition transformer. The electrodes are mounted just above the oil nozzle.
Flame failure during start-up and normal operation is detected by photo cells mounted on the burner unit and coupled to the control system. By loss of flame, the flame failure equipment will automatically shut down the burner.
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