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矿井通风机是保证井下安全生产的重要设备,但电耗一般占矿山总电耗的20～25％。因此,选用高效率风机对节省能耗和通风费用,提高矿山经济效益极为有利。如果能将风机效率提高10％,全国矿山每年即可节电20亿度,经济意义相当可观。 目前,国内矿山使用较多的BY型和70B_2型轴流风机,系仿苏四十年代产品,存在效率低、能耗大的严重缺点。样本上的最高效率可达72％,但因无合理的调节方法,实际运转效率大都低于60％,且因电耗大而成为矿山生产的“电老虎”。如湖南锡矿山南矿,通风费用占生产成本的9％,电费在通风费用中又占65％,通风耗电量占矿山总电耗的
Mine fan is to ensure the safety of underground production of important equipment, but the power consumption generally accounts for the total electricity consumption of mine 20 to 25%. Therefore, the selection of high-efficiency fan to save energy and ventilation costs, improve mine economic benefits are extremely beneficial. If the fan efficiency can be increased by 10%, the national mine can save 2 billion kWh annually, the economic significance is considerable. At present, the domestic mines use more BY-type and 70B-2 axial-flow fans, which imitate the products of the 1940s, which have serious shortcomings of low efficiency and large energy consumption. The highest efficiency of the sample can reach 72%, but due to improper adjustment methods, the actual operating efficiency is mostly lower than 60%, and due to large power consumption and become mine production “electric tiger.” Such as Hunan Tin Mine South, ventilation costs account for 9% of production costs, electricity costs account for 65% of ventilation costs, ventilation and power consumption accounts for the total power consumption of the mine