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二十多年来,矿井通风的主扇是仿苏70B_2型系列产品,该系列产品使用范围不广和静压效率较低,不能满足矿井通风的要求。 62A_(14)型矿井轴流通风机是沈阳鼓风机厂为代替70B_2型矿井轴流通风机而设计的新型风机。两者的主要区别是:最高圆周速度从94米/秒(24~#)提高到126米/秒(24~#);毂比从比0.7降低到0.625;叶片由非扭曲型改为扭曲机翼型,采用强度较高的ZL_4铸铝制造。工作轮直径为500毫米的该型风机模型试验证明,最高静压效率可达84％。(70B_2型最高静压效率为70％),同时调节范围较大,除了可改变主轴转数,叶片安装角度外,还可以改变叶片数量来满足性能要求。该型风机单台工作最高静压可达400毫
For more than two decades, the main fan of mine ventilation is imitation Su 70B_2 series products. The series of products are not widely used and the static pressure efficiency is low, which can not meet the requirements of mine ventilation. 62A_ (14) mine axial fan is a new type of fan designed by Shenyang Blower Factory to replace the 70B_2 mine axial fan. The main difference between the two is that the maximum circumferential speed is increased from 94 m / s (24 #) to 126 m / s (24 to #), the hub ratio is reduced from 0.7 to 0.625, and the blades are changed from non-twisted to twisted Airfoil, made of high strength ZL_4 cast aluminum. This type of blower model test with working wheel diameter of 500 mm proved that the maximum static pressure efficiency can reach 84%. (70B_2 maximum static pressure efficiency of 70%), while regulating a larger range, in addition to changing the spindle speed, blade installation angle, but also can change the number of leaves to meet the performance requirements. This type of fan single working maximum static pressure up to 400 milliliters