我矿通风系统采用对角抽出式通风方式。所用的2K60型轴流式主通风机已使用多年。后经一系列设计改造,导叶调整机构改进,风机能耗指标仍不符合要求。由于运行风量太大,工况点太往右偏移,如能降低风量到5800m3/min内则可使风机运行效率提高到70%以上,同时风机能耗就可达标,基于这 Mine mine ventilation system using diagonal extraction ventilation. The type 2K60 axial main blower used has been used for many years. After a series of design and transformation, guide vane adjustment agencies to improve, fan energy consumption indicators still do not meet the requirements. As the operating air volume is too large, the working point is too far to the right offset. If the air volume can be reduced to 5800m3 / min, the fan operating efficiency can be increased to over 70%, and the fan energy consumption can reach the standard. Based on this