不同进风结构煤粉燃烧器冷态流场实验研究

对采用切向和端面旋流进风结构的煤粉燃烧器进行了冷态流场特性实验研究，实验结果表明采用端面旋流进风结构的煤粉燃烧器流场轴向速度分布对称性、均匀性大大加强，而一、二次风合为一股端面旋流进入比单独从轴向进一次风对流场的合理分布更加有利。

An Experimental Study of the Cold-state Flow Field of a Pulverized-coal Burner under Different Air-entry Versions

An experimental study was conducted of the cold state flow field characteristics of a pulverized coal burner under two different air entry versions, namely, air tangential entry and end face air prewhirl entry. Test results indicate that the end face prewhirl entry of air can lead to a considerably enhanced symmetry and uniformity of axial speed distribution of the burner flow field. Furthermore, from the perspective of flow field distribution the integration of primary and secondary air into one stream of end face prewhirl flow entry will be more contributive to the rational distribution of flow field than in the case of single axial entry of primary air.