燃油燃烧器的正交数值试验分析

Orthogonal Numerical Test Analysis of Oil Burner

对分级配风双旋流燃油燃烧器选取其结构参数内旋流叶片内径、内旋流数、外旋流数、轴向分速度和雾化角等五个变量进行了5因素4水平的16组正交数值试验,用极差法确定了炉膛燃烧因子最小时五个因素的最优组合,用方差法分析了影响炉膛燃烧因子的因素显著性程度。结果表明:内旋流数对炉膛燃烧因子影响最大,内旋流叶片内径影响较小,轴向分速度、外旋流数和雾化角影响最小。燃烧器在最优组合参数运行时,炉膛最高温度为1351K,炉膛平均温度为1102K,燃烧因子θ为18.43%。

For the grading distribution double-swirl fuel burner, the structural parameters are selected： internal swirling blade inner diameter, internal swirling number, external swirling number, axial sub-speed and atomization angle, the five variables were subjected to 16 sets of orthogonal numerical tests at 5 factors and 4 levels. Using the range method to determine the optimal combination of five factors when the furnace combustion factor is minimum, the significance of the factors affecting the combustion factor of the furnace was analyzed by the variance method. The results show： internal swirling number has the greatest influence on the combustion factor of the furnace, internal swirling blade inner diameter has less influence. The axial sub-speed, external swirling number, and the atomization angle have the least effect. When the burner is running at the optimal combination parameter, the maximum temperature of the furnace is 1351K. The average temperature of the furnace is 1102K. The combustion factor e was 18.43%.