燃烧器喷射角度对W型火焰锅炉炉内空气动力场的影响  

Experimental Investigation on Influence of Injection Angle of Burners on Aerodynamical Field in W Shaped Flame Boiler

作　　者：何立明[1] 车刚[1] 徐通模[1] 惠世恩[1] 闫晓[1] 许卫疆[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：《燃烧科学与技术》2001年第3期294-297,共4页Journal of Combustion Science and Technology

基　　金：中国博士后科学基金资助项目 (中博基 [1 998] 6号 )

摘　　要：对引进的 36 0 MW的 W型火焰锅炉进行冷态模化研究 ,用热线风速仪测试炉内流场 ,研究了燃烧器喷射角度对炉内空气动力场的影响规律。研究表明 ,随着燃烧器喷射角度的减小 ,一、二次风对炉膛前后墙 (即水冷壁 )的冲刷作用明显减小 ,同时 ,高温烟气对喉口和炉拱的冲刷速度和角度也有所减小 ,这样可有效防止水冷壁的高温腐蚀 ,减轻水冷壁、炉拱和喉口处的结渣程度 ,但烟气向下的行程有缩短的趋势 。Cool state experimental investigation was made on a model of the 360 MW W shaped flame boiler, measuring flow field in the boiler with a hot-wire anemometer. The influence of injection angle of burners on aerodynamic field in boiler was studied. The action of primary air and secondary air washing front and rear walls (water cooling walls) of furnace can b dropped evidently, while, the scouring velocity and angle of high temperature gas against throat, front and rear arches of furnace chamber are decreased with the decrease of injection angle of burners, so that high temperature corrosion of water cooling walls is prevented and the degree of clinker in these positions can be alleviated. But the gas downward route in the chamber of furnace shall be shortened, this isn't beneficial to complete combustion of pulverized coal injected into chamber of furnace.

关 键 词：W型火焰锅炉 燃烧器喷射角度 空气动力场 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]