异形水管对高炉冷却壁温度和应力场的影响

Influence of Special Pipe on Temperature Field and Thermal Stress Field of Cooling Stave for Blast Furnace

摘要:

利用ANSYS软件分析了各种异型管（椭圆、矩形、正六边形、双圆形及三圆形）对冷却壁温度场及热应力场的影响.结果表明：与圆管同周长时，各异型冷却水管冷却壁的热面最高温度和最大热应力变化幅度不大；与圆管同截面积时，各异型管冷却壁热面最高温度和最大热应力均有所下降.这说明冷却水管由圆管改成异型管后，提高了冷却壁的传热性能，从而延长了高炉的使用寿命.采用最优管形——长短轴比为0.6的椭圆管，可以减少冷却水流量和减薄冷却壁壁体厚度，从而达到降低炼铁成本的目的.

Abstract:

The influence on temperature field and thermal stress field of cooling stave with different kinds of special pipes(elliptical, rectangular, orthohexagonal, double circle and triple circle pipes) was analyzed by ANSYS. The results show that when the circular pipe’s perimeter is kept as a constant, the rise of maximum temperature and thermal stress on the hot surface of cooling stave is not high. In the case of keeping circular pipe’s sectional area as a constant, the maximum temperature and thermal stress on the hot surface of cooling stave decrease. This illustrates that when circular pipe is replaced by different sorts of special pipes, the heat transfer ability of the stave is improved. Consequently, the lifetimes of blast furnace are extended. Through use of elliptical pipe with the proportion of 0.6 between the longer axis and shorter as the optimum tubular, the flow of cooling water and thickness of the cooling stave can be reduced and therefore to reduce ironmaking costs.