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The significance of flame monitoring and flame protection technology
Industrial furnaces sometimes experience varying degrees of explosion accidents during operation. According to relevant reports and investigations, about 80% of explosion accidents are caused by reasons such as flame extinguishing, delayed ignition, or failed ignition. It can be seen that unstable flames are the main cause of explosion accidents.
With the development of production technology, large, fast, and automated industrial furnaces are constantly emerging, requiring combustion devices to have greater combustion intensity. Compared with low intensity combustion, it increases the tendency to cause explosion accidents. In addition, in some industrial heating equipment, it is sometimes required that the combustion device can achieve stable combustion under low temperature conditions below 750 ° C. All of the above situations indicate that the stability of flames must be taken seriously. In this regard, one of the main measures currently adopted is flame monitoring devices and flame protection measures, in order to detect the extinguishing of flames in a timely manner and ensure the stability of combustion.
The role of the flame monitoring system mainly includes the following three aspects.
① Program control the ignition process, provide practical and feasible ignition measures, and confirm the success of ignition.
② Verify the normal conditions required for combustion, ensuring that the ratio and pressure of fuel to air remain within the stable range of the flame.
③ Industrial applications perform regular flame monitoring tasks, and when the flame extinguishes, they can immediately respond, issue an alarm, and cut off the fuel supply system leading to the combustion device.