4070 m^3高炉热风管道温度场的数值模拟

Temperature Field Numerical Simulation for Hot Blast Pipe of 4070 m^3 BF

针对某钢厂5号高炉(4070m^3)热风管道结构变形和破损问题,采用有限元方法对高炉热风管管道结构的温度场进行了数值模拟,并进行了实验验证。数值模拟结果显示:①正常工况下,主管温度无异常,但是在管道三盆口位置出现局部温度偏高,温度梯度明显,与现场破损位置一致;②热风管盲端和三岔口温度分布特征与实验吻合,热风管主管和支管外壁整体温度变化趋势同样可以与实验数据基本对应。

Facing the defonned and damaged hot blast pipe structure of No.5 BF(4070 m^3)in a steel plant,a finite element analysis method is used to simulate numerically the temperature field of BF hot blast pipe structure and this method gets verified through the experiments.The simulation results reveal the main pipe temperature is normal under the normal operating condition,but the temperature at breeches pipe is abnormal high with obvious temperature gradient.This situation is consistent with the damaged portion found;furthermore,the temperature distribution characteristics of the blinded end of the hot blast pipe and the breeches pipe proves the experiment result.The overall temperature variation trend on the wall of the hot air main pipe and branch pipe are also in line with the experimental data basically.