Identification and Prediction of Water-cooled Wall Temperature Variation Period Based on Fiber Grating Technology
With the promotion of Chinese"3060"dual carbon strategy,ensuring stable ignition and combustion of coal powder is crucial for the transformation of the coal-fired power industry from basic load power sources to regulated power sources.One of the core issues is how to effectively monitor and control the temperature of the water-cooled wall.In response to the challenges posed by the complexity of variable coal quality,frequent peak shaving of units,and supercritical steam water characteristics,this paper constructs a comprehensive multi-point temperature measurement system by arranging a large number of temperature measurement points vertically and horizontally on the boiler water-cooled wall to intuitively monitor the temperature changes of the water-cooled wall.This method not only provides detailed data on the overall temperature of the water-cooled wall,but also effectively supports the control and regulation of the boiler combustion process,thereby improving the safety and economy of power plant boilers.Through extensive and multi-point temperature monitoring,real-time monitoring and recording of temperature changes in the water-cooled wall can be achieved,and problems such as transverse cracks and high-temperature corrosion of the water-cooled wall can be detected and solved in a timely manner,providing a basis for optimizing boiler operating parameters.
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