论文部分内容阅读
通过建立顶燃式热风炉炉壳弹塑性模型,研究了盲板力作用下热风炉炉壳的受力状态及变形情况.结果表明,在内部气体压力作用下,热风炉炉壳及热风总管变形弯曲挤压热风支管,导致热风炉炉体、总管与支管相交线附近炉壳出现应力集中,送风期热风炉热风出口顶部与底部发生塑性变形,热风炉出口附近钢壳在顶部、底部附近所受Z向拉应力及左右两侧附近所受Y向压应力的作用下向两侧拉伸并沿高度方向压缩,近似成椭圆形;送风期比燃烧期热风炉出口炉壳变形更明显,热风出口处钢壳在操作周期中的反复变形影响热风炉的寿命及稳定性.
By establishing the elasto-plastic model of the top-burning hot blast stove shell, the stress state and deformation of the hot blast stove shell under the influence of the blind-plate force were studied. The results show that under the action of the internal gas pressure, the deformation of the hot blast stove shell and the hot- Bending and extruding the hot air branch pipe, resulting in the stress concentration of the furnace shell near the intersection of the hot blast furnace body and the branch pipe, the plastic deformation of the top and bottom of the hot blast outlet of the hot blast furnace during the air supply period, the steel shell near the exit of the hot blast furnace near the top and the bottom The tensile stress in the Z direction and the Y-direction compressive stress in the vicinity of the left and right sides are stretched to both sides and compressed in the height direction, and are approximately elliptical; the deformation of the shell of the blast furnace outlet during the blasting period is more obvious than that of the blast furnace, Repeated deformation of the steel shell in the hot air outlet during the operation cycle affects the life and stability of the hot blast stove.