What are the types of flame protection technologies available?
What are the types of flame protection technologies available?
In addition to using flame monitoring devices, modern combustion devices also adopt various flame protection measures to ensure the safety and stability of combustion. Various flame protection technologies can be broadly classified into the following types based on their working principles.
① Split flame ignition refers to using a portion of the separated flame as the ignition source. This type of burning is widely used in industrial furnaces that require high temperature and intensity, as it relies on separating smoke to preheat the root of the main flame, thereby accelerating the combustion rate of the main flame and obtaining a very stable flame.
This type of burner has good flame conductivity. In general, the conductivity and electrical rectification of gas flames are weak, while during high load combustion, the conductivity of flames is strong, the rectification effect of electricity is more significant, and the reproducibility and stability are also good. Therefore, when using a split flame ignition nozzle, a safety device using a conductive rod to monitor the flame can be installed on the furnace, significantly improving the reliability and stability of the flame monitoring system.
② Reverse airflow refers to artificially creating a reverse vortex flow near the outlet of the mixed airflow of air and gas, which maintains flame stability through its northward suction effect on the surrounding gas.