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我局一、三矿共有70B_2轴流式扇风机五台,其中运行二台,备用三台,风机效率较低,耗电量大,占我局总用电量的10%以上。我局系暮年矿井,矿井风量、负压变化较大,继主扇全部更换扭曲风叶实现年节电74.58万度后,为了进一步节约用电,我局首先在三矿对三台主扇电机,采用导磁衬板来代替竹楔的试验,经半年试运转证实效果良好,并在负压、风量不变的情况下,进行了技术测定。φ2.8米主扇的800kw电机,φ2.4米主扇的570kW电机,φ1.8米主扇的520kW电机,其功率损耗等数据见下表,从表中试验数据可
I Bureau, a total of three mine 70B_2 axial fan five, of which two run, spare three, the fan efficiency is low, power consumption, accounting for more than 10% of the total electricity consumption of our bureau. Department of mine in the twilight years mine, mine air volume, negative pressure greater changes, following the main fan to replace all the twisted blades to achieve annual saving of 745,800 degrees, in order to further save electricity, the first mine in the mine three main fan motor , The use of magnetic bearing instead of bamboo wedge test, after six months of test run proved good, and in the negative pressure, air volume unchanged, the technical determination. φ2.8 m main fan 800kw motor, φ2.4 m main fan 570kW motor, φ1.8 m main fan 520kW motor, the power loss and other data in the table below, the test data from the table can be