A Method of Calculating the Coal Quantity in the Coal Bunker Based on the Level Meter
The coal quantity in the coal bunker is an important factor used for calculating boiler performance and can also provide guidance for optimizing combustion strategies.In this paper,a new method of calculating the coal quantity in the coal bunker based on the level meter is proposed.In order to avoid the influence of error of the level meter,the linear fitting is used to obtain the relationship between the level meter and the time.The relationship between the level meter and the time is used to calculate the coal quantity.The results show that the coal volume decreases linearly with the time when coal feed rate is constant.The bulk density of coal can be obtained by the change trend of the coal volume and the coal feed rate.Different operating conditions are obtained by changing the coal feed rate,these operating conditions are used to verify the feasibility of the bulk density calculation method.The coal quantity is obtained by the bulk density of coal and the coal volume calculated by the level meter value,then the quantity of the coal added in the coal bunker can be obtained.The new method of calculating the coal quantity in the coal bunker propsed can eliminate errors caused by the inaccurate coal flow speed,belt slippage,coal leakage from the coal plough,and the cumulative error of the belt scale.In another word,the new method can help to accurately measure the coal quantity in the bunker.
万方数据
维普
