带钢冷却风箱设计
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摘要
带钢连续退火炉中常用喷吹冷却风箱来完成降温过程,冷却风箱喷嘴结构有缝式和圆孔式。根据Martin公式,计算分析了喷嘴尺寸、与带钢距离、气流速度、H2含量对换热系数的影响,为风箱设计提供指导。
The jet cooling equipment is used in cooling processes of the strip annealing line. There have two type nozzles such as flat slot jet and round nozzle jet. Based on Martin formula,the relationship between heat coefficient and nozzle size,distance to strip,gas velocity,percentage of H2 has been analyzed. The result can be guided the design of jet cooling equipment.
The jet cooling equipment is used in cooling processes of the strip annealing line. There have two type nozzles such as flat slot jet and round nozzle jet. Based on Martin formula,the relationship between heat coefficient and nozzle size,distance to strip,gas velocity,percentage of H2 has been analyzed. The result can be guided the design of jet cooling equipment.
引文
[1]凌全伟,董磊.现代镀锌及连退炉快冷技术的发展和现状[J].冶金能源,2011. 30(2):47-51.
[2]Martin H. Heat and mass transfer between impinging gas jets and solid surface[J]. Adv Heat Mass Transfer,1977. 13:1-60.
[3]M. Attalla,E. Specht. Heat transfer characteristics from in-line arrays of free impinging jets[J]. Heat Mass Transfer,2009. 45:537-543.
[4]向顺华,黄夏兰等.带钢连续退火中气雾冷却速度的计算[J].宝钢技术,2004. 1:62-64.
[2]Martin H. Heat and mass transfer between impinging gas jets and solid surface[J]. Adv Heat Mass Transfer,1977. 13:1-60.
[3]M. Attalla,E. Specht. Heat transfer characteristics from in-line arrays of free impinging jets[J]. Heat Mass Transfer,2009. 45:537-543.
[4]向顺华,黄夏兰等.带钢连续退火中气雾冷却速度的计算[J].宝钢技术,2004. 1:62-64.