摘要
为防止螺旋叶片在高温物料的作用下因过热而烧毁,考虑水冷、空冷、叶片与物料接触热传导、叶片与物料辐射热传导等边界条件,采用有限元方法,对螺旋叶片温度场进行分析,得出螺旋叶片的温度分布情况,据此设计出一种满足螺旋输送机工作要求的内部通冷却水式新型叶片结构。仿真计算结果表明,内部通水冷却叶片,可较好地改善叶片温度分布,最高温度仅达550℃,应力强度远小于该材料屈服强度,能够满足长期工作要求。
To prevent the burnout of screw blade under high temperature due to overheating,in this paper,considering boundary conditions such as water cooling,air cooling,contact and radiation thermal conductivity etc.,the temperature field of screw blade was analyzed with FEM and the temperature distribution of screw blade obtained.Thus a new type of blade with cooling water flowing inside was put forward,which can satisfy the operation requirements of screw conveyor.Simulation results show that it can improve the temperature distribution of blade with cooling water flowing inside and the maximum temperature is only 550℃.Meanwhile,stress intensity is much less than yield strength of the material,which meets the longterm operation requirements.
出处
《矿山机械》
北大核心
2010年第13期70-73,共4页
Mining & Processing Equipment
关键词
水冷螺旋输送机
叶片
温度场
有限元
screw conveyor
blade
temperature field
finite element
