At present, most boilers use static pressure tubes to monitor the pressure of each air duct to adjust the primary wind speed. Because static pressure cannot reflect the flow speed and condition of the primary air nozzle, it is impossible to achieve accurate and real-time measurement of the primary wind speed. According to this situation, the primary wind speed monitoring method of the boiler is improved. The bottom layer of this scheme uses a micro-differential pressure sensor to measure the air flow pressure of the air duct, and makes necessary corrections to obtain a more accurate nozzle wind speed; the ADAM module is used for data acquisition and communication, and the upper layer uses VB to realize the user interface. The system can intuitively, accurately and in real time reflect the wind speed of the boiler. It has been put into operation in Hunan Jinzhushan Power Plant. Because the combustion stability of the boiler is significantly enhanced and the number of fire extinguishing times is reduced, the equipment maintenance cost is reduced, and the generation of NOX is reduced, which has good economic and social benefits. Keywords: primary wind speed; monitoring; data acquisition; database; serial communication
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