锅炉炉膛耐火砖剥落的温度场与红外检测  

Infrared Diagnostics of Boiler Furnace Refractory Bricks Flaking

作　　者：周国强[1] 杨立[1] 刘莉莉[1] 夏舸[1] 

机构地区：[1]海军工程大学,湖北武汉430033

出　　处：《机电工程技术》2013年第3期66-69,共4页Mechanical & Electrical Engineering Technology

摘　　要：对带有缺陷的炉膛试件内部传热建立了三维物理和数学模型,运用有限体积法研究了不同缺陷方位时检测表面的温度分布及红外特征。通过计算分析可得到结论,耐火砖在炉膛保温效果方面起到主要作用,当耐火砖出现故障时,外表面温度出现异常且缺陷处的最高温度与正常工作时外表面温度的温差随缺陷深度的增加近似呈指数关系。The establishment of a three-dimensional physical and mathematical models of the internal heat transfer with a defective furnace specimen, use the finite volume method to study the surface temperature distribution when the orientation of the different defect detection and infrared characteristics. Conclusions can be drawn by computational analysis, firebrick played a major role in the furnace insulation effect, when firebrick failure, the outer surface temperature abnormality and defects at the maximum temperature and the normal working when the temperature difference between the outer surface temperature of an exponential relationship with the increase in defect depth.

关 键 词：红外 表面温度 红外诊断 锅炉 炉膛耐火砖砖壁 缺陷 

分 类 号：TK22[动力工程及工程热物理—动力机械及工程]