喷雾转筒冷却机喷雾冷却性能

喷雾转筒冷却机是转底炉生产线上的关键设备之一。为了提高冷却机的冷却性能,针对转筒外喷雾冷却系统换热特性,应用CFD数值模拟技术建立传热过程耦合模型,研究了喷嘴数量、间距以及偏移量等布置参数对换热的影响。结果表明,数量过多、间距过小或数量过少、间距过大均不利于传热,合适的数量和间距对设备冷却性能具有积极作用,喷嘴平行四边形排列在一定程度上优于矩形排列。最后通过具体工程应用试验验证了研究成果的正确性。

Spray cooling performance of a spray drum cooler

The spray drum cooler is one of the key equipment in the rotary hearth furnace process. In order to improve the cooling performance of the cooler,a CFD numerical simulation technology was used to establish a coupling model of the heat transfer process based on the heat transfer characteristics of the external spray cooling system of the drum. The effects of layout parameters such as the number of nozzles,pitch and offset on heat transfer were studied. Effects of nozzle distribution parameters including nozzle number,nozzle distance and nozzle offset on the spray cooling were studied. Too many nozzles with too small distance or too few nozzles with too large distance are not conducive to the cooling performance. An appropriate number and distance have an important impact on the cooling performance of the equipment. Compared to rectangular array nozzles,the parallelogram array has better cooling performance. Finally,the correctness of the research results was verified by specific engineering applications.