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在存在多介质的高炉回旋区内,首先利用安装在风口直吹管窥视孔的电荷耦合器件(charged couple device,CCD)摄像机可以获得高炉回旋区内累积的二维温度辐射图像,然后将高炉回旋区均分成若干小块,利用数学模型近似模拟回旋区内的辐射传热过程并建立矩阵方程,通过求解方程获得高炉回旋区内的三维温度场.在模拟辐射传热过程中,本文提出了一种更有效也更符合实际生产的新方法——基于距离的高斯函数模型来模拟高炉内介质的辐射能量传播过程并获得了较好的三维温度场.由于存在波动误差以及电荷耦合器件摄像机测量误差等,所以我们通过在测量数据中添加随机误差来验证重构温度场的有效性以及稳定性.结果显示重构的三维温度场与真实温度场非常接近,误差在高炉工业允许的5%范围以内.
In the presence of multi-media blast furnace convolution zone, a two-dimensional temperature radiation image accumulated in the blast furnace convolution zone is first obtained by a CCD (charge couple device) camera installed at the peephole of the tuyere and then the blast furnace cyclotron Are divided into small pieces, the mathematical model is used to approximate the radiative heat transfer in the raceway and the matrix equation is established, and the three-dimensional temperature field in the blast zone is obtained by solving the equation.In the process of simulated radiative heat transfer, More effective and more in line with the actual production of a new method - distance-based Gaussian function model to simulate the blast furnace medium radiative energy propagation process and get a better three-dimensional temperature field due to the existence of fluctuation error and charge coupled device camera measurement error , We verify the validity and stability of the reconstructed temperature field by adding random errors to the measured data.The results show that the reconstructed 3D temperature field is very close to the true temperature field and the error is within 5% of the blast furnace industry’s allowable range.