火床炉拱区流动阻力特性分析  

Analysis of Gas Flow Resistance Characteristics under the Stoker Arches

作　　者：缪正清[1] 窦文宇[1] 惠世恩[1] 徐通模[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《动力工程》2000年第6期933-936,915,共5页Power Engineering

摘　　要：根据边界层动量积分方程结合拱区模化试验整理的拱区速度分布特性 ,对火床炉后拱面摩擦阻力进行了理论推导 ,得出了计算表达式。实例计算表明 ,火床炉后拱区内最大静压差主要由汇流过程中势流区的动静压转换所致 ,壁面摩擦阻力损失与之相比 ,完全可以忽略不计。同时 ,该文也为炉拱结构趋向小型化提供了空气动力方面的理论依据。图 1表 1参Combining the layer momentum integral equations with the velocity distribution characteristics summarized from modeling experiment under the stoker arches, the theoretical formula of the friction resistance of rear arch surface is deduced and educed. By a practical example calculation, it's showed that the biggest static pressure difference under the rear arch comes from the transmission between active pressure and static pressure in potential conflux. Simultaneously, this paper also provides air dynamic basis for arch structure tend to more small. Fig1, table 1 and refs 4.

关 键 词：火床炉 炉拱 流动阻力 工业锅炉 

分 类 号：TK175[动力工程及工程热物理—热能工程]