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一、前言长期以来 ,我国煤炭企业一直使用老、旧、低效、耗能高、噪声大的主扇和局扇 ,这些通风机还存在风机特性与网络特性不匹配、风叶断裂、风机电机温升高、轴承寿命短等缺陷 ,特别是近几年市场上出现的对旋主扇 ,其效率比老式风机有了很大的提高 ,但电机温升高 ,轴承寿命
I. Foreword For a long time, China’s coal industry has been using the old, old, inefficient, high energy consumption, high noise main fan and bureau fan, these fans also exist fan characteristics and network characteristics do not match, fan break, fan motor Temperature rise, bearing short life and other shortcomings, especially in the market in recent years appear on the main fan, the efficiency of the old fan has been greatly improved, but the motor temperature rise, bearing life