切向燃烧炉内旋流数分布的试验研究  

EXPERIMENTAL STUDY ON THE DISTRIBUTION OF SWIRL NUMBER IN THE TANGENTIALLY FIRED BOILER

作　　者：李彦鹏[1] 刁永发[2] 张强[1] 徐益谦[1] 许晋源[2] 

机构地区：[1]东南大学热能工程研究所,江苏南京210096 [2]西安交通大学热能工程系,陕西西安710049

出　　处：《工程热物理学报》2001年第S1期213-216,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究项目基金资助(No.G1999022209)

摘　　要：本文采用ＩＦＡ３００型三维热膜风速仪系统对一大型四角切向燃烧锅炉的旋流数进行了模型试验研究。测得了炉内不同位置处瞬时速度、脉动速度和湍动度分布，得到了表征炉内气流旋转强度的旋流数沿炉膛高度的分布规律，并以此提出了减少残余旋转的措施。同时发现炉内实际旋流数远远大于锅炉设计校核时所用的旋流数。本文的研究对锅炉的设计校核及防治残余旋转具有重要意义。A model experimental study on the distribution of Swirl Number is carried out with automated 3-D thermal anemometer system. The measurement results of flow field and turbulent intensity in furnace are obtained. Through the analysis of the distribution of Swirl Number in the furnace, the cause of flue gas imbalance and the diminishing means are discussed. It also is observed that the Swirl Number is much greater than that of the original design. The conclusions presenced in the paper can serve as a guide for...

关 键 词：切向燃烧炉 热膜风速仪 旋流数 

分 类 号：TK224.11[动力工程及工程热物理—动力机械及工程]