不同燃烧器高宽比下炉内空气动力特性的试验研究

本文应用相似模化理论对烟煤型燃烧器进行炉内冷态试验研究.通过对一次风射流的偏转,炉内气流的旋转强度、充满程度,燃烧器射流两侧的补气条件,炉膛出口的速度分布等特性随着燃烧器高宽比H/B的变化规律的研究,提出了较为理想的大型电站锅炉烟煤型燃烧器高宽比的范围,为指导电站锅炉燃烧器的设计和改造提供理论参考。

Aerodynamic Experimental Research in Corner-Fired Furnace with Burners of Different Height- Width Ratios

This paper analyses aerodynamics in a cold model furnace with burners burning bituminous coal on the basis of similarity theory. Through investigating relations of deflection of primary airjet, rotating strength and occupied coefficient of air flow, pressure variety of both sides of airjet and velocity, distribution in furnace exit with various height-width ratio (H/B) of burners, we propose a reasonable range of H/B. It can provide a reference for burners design and retrofit of utility boilers.