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矿井主扇扩散塔是从主扇向大气中排风的装置。由于全矿总风量均通过扩散塔排出,其通过的风量大、风速高,因此,扩散塔选型及通风阻力状况的好坏对主扇能量的有效利用有较大影响。我室对直立型、苏式60°倾斜扩散塔、改进型45°倾斜扩散塔以及由我室设计的东工流线型扩散塔的风流参数及空气动力阻力状况进行了试验研究。现将研究结果介绍如下:
Mine main fan diffusion tower is the main fan to the atmosphere of the exhaust device. As the total air volume of the whole mine is discharged through the diffusion tower, the amount of air passing through it is large and the wind speed is high. Therefore, the selection of the diffusion tower and the resistance and resistance conditions have a significant impact on the effective utilization of the main fan energy. The experimental study on the airflow parameters and aerodynamic resistance of upright type, Soviet type 60 ° inclined diffusion tower, modified 45 ° inclined diffusion tower, and Dongsheng streamline diffusion tower designed by our laboratory was carried out. Now the research results are as follows: