旋流预混合燃烧器基本性能的冷态试验研究  

Cold State Experimental Study on Basic Performance of Swirl Premixed Burner

作　　者：董陈[1] 徐通模[1] 周屈兰[1] 惠世恩[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《动力工程》2008年第5期799-802,806,共5页Power Engineering

基　　金：国家重点基础研究发展计划973资助项目(2005CB221206);十一五国家科技支撑计划资助项目(2006BAK02B03)

摘　　要：针对多联产系统中热值较低、成份可变的弛放气和粗煤气的燃烧利用,设计了可调旋流强度预混合燃烧器来获得弛放气和粗煤气的高效、低污染稳定燃烧.利用电子微压计和热线风速仪分别对影响燃烧器阻力特性及喷口旋流强度的各个因素进行了冷态试验研究,得到了各种因素对旋流燃烧器基本性能的影响规律.结果表明：对于30°、45°、60°倾角的旋流叶片,燃烧器进入第二自模化区的临界雷诺数为11 000,对应的阻力系数分别为0.209、0.269、0.428;对于3种倾角旋流叶片,当芯管离开喷口缩口断面的无量纲距离不小于0.25-0.5时,喷口处气体旋流强度不再改变.In order to use low caloric value and components variable exhaust gas and raw gas from polygeneration system, a swirl premixed burner, whose swirl intensity is adjustable, was designed to obtain a highly efficient, less polluted and stable combustion. Factors which have effect on burner resistance characteristics and nozzle swirl intensity were studied in cold state experiments, by using electronic micromanometer and hot film anemometer. Effect law of the factors on the burner＇s basic performance is obtained. Results show that for swirl vanes with a slope angle of 30°, 45°, 60°, the burner will enter second mould area when Reynolds number equals to 11 000, with resistance coefficient equal to 0. 209, 0. 269 and 0. 428, respectively. Nozzle swirl intensity will keep constant when dimensionless distance between fuel tube and necking cross section is greater than or equal to 0.25-0.5.

关 键 词：能源系统工程 旋流燃烧器 冷态试验 阻力特性 旋流强度 

分 类 号：TK473[动力工程及工程热物理—动力机械及工程]