摘要
为改善四角布置切圆燃烧锅炉水平烟道烟气偏差,以某600MW级锅炉为研究对象,就分隔屏布置对其炉膛上部及水平烟道空气动力场的影响进行了冷态模化试验及计算流体力学数值模拟研究。通过分析气流流动特性和水平烟道速度偏差的形成机制,得到分隔屏布置对炉膛上部气流分布及水平烟道速度偏差的影响规律。结果表明:布置分隔屏使得水平烟道内气流相对于无分隔屏时更加贴近壁面,局部区域速度偏差有较大的增加;分隔屏可在一定程度上减小炉膛出口两侧速度偏差,但效果不明显。
Based on the cold modeling test and computational fluid dynamics numerical simulation on a 600 MW tangentially fired boiler,the influence of the panel superheater layout on air dynamic field of the upper furnace and horizontal gas pass was researched to improve the situation of the flue gas velocity deviation.The flow characteristics in furnace and the forming mechanism of velocity deviation in the horizontal gas pass were analyzed,and the influence of panel superheater layout on the upper furnace flow distribution and velocity deviation in the horizontal gas pass was got.The results indicated that,compared with without panel superheater,the flow is closer to the wall in horizontal gas pass with panel superheater,the velocity deviation in local area has a greater increase,and the velocity deviation of left and right side in furnace outlet could be reduced to some extent,but the effect is not obvious.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第17期6-11,共6页
Proceedings of the CSEE
基金
上海市科委重大科技项目(07dz12005)~~
关键词
切圆燃烧锅炉
分隔屏
速度偏差
模化试验
数值模拟
tangentially fired boiler
panel superheater
velocity deviation
modeling experiment
numerical simulation
