四角切圆燃烧锅炉冷态空气动力场试验研究  

Experimental Study on Cold Aerodynamic Field of Corner Tangential Fired Boiler

作　　者：郭松涛[1] 王岩[1] 刘德荣[1] 

机构地区：[1]华北电力科学研究院(西安)有限公司

出　　处：《中国特种设备安全》2014年第2期4-8,共5页China Special Equipment Safety

摘　　要：通过对330MW四角切圆锅炉燃烧器进行了炉内冷态空气动力场试验的研究,分析了B层燃烧器区域空气速度分布和衰减情况,研究了一次风速,一、二次风动量比和周界风风量等因素对四角切圆燃烧方式的炉内空气动力场的影响规律。试验结果表明,四角的一次风射流衰减特性基本一致,射流刚性良好。在改变二次风与一次风动量比后,对炉内实际切圆直径影响较小。周界风可以增强一次风射流的刚性,燃烧器上下摆动只改变了炉膛火焰中心的位置,并未改变切圆大小。这为燃烧器安全稳定运行提供技术依据和运行参考。As full scale cold flow experiment was carried out in the burner of comer tangential fired boiler with 330MW, it analyzed the velocity distribution and jet decay in the burner area, investigated how the primary air velocity, air momentum ratio of the primary to the secondary, and the border air flux affectthe aerodynamic field in the boiler. The result shows that four angle＇s jet decay in the burner area are basically same and the rigid is good. After changing momentum ratio of the secondary to the primary air, the size of the practical tangential circle hardly changed. Boiler air flux enhances rigid of the primary air. When burners swing up and down, it did only change center position of the furnace flame, not alter circle size. It provides technical base and reference for safe and stable operation of burners.

关 键 词：一次风 二次风 周界风 空气动力场 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]