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防爆轴流风机常见故障的原因分析
来源:http://qnzjj.com/zhouliufengjizhishi/250.html 点击数:0 发布日期:2020/8/15 0:15:39
防爆轴流风机常见故障的原因分析
防爆轴流风机引起轴承和叶片损坏螺栓松动机壳和风道损坏等故障,严重危及风机的安全运行。风机轴承振动超标的原因较多,如能针对不同的现象分析原因,采取恰当及时的处理办法,往往能起到事半功倍的效果.
防爆轴流风机主要有送风机引风机次风机密封风机等,引风机由于长期连续工作,运行条件较恶劣,故障率较高,平均每年发生故障为2次,送风机平均每年发生故障为0.4次,导致机组非计划停运或减负荷运行。因此,迅速判断风机运行中产生故障续安全运行的保障。虽然风机故障类型繁多原因也很复杂,但实际运行中风机故障较多的是轴承振动轴承温度高叶片磨损动叶卡涩旋转失速和喘振等1.
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防爆轴流风机当气体进入叶轮时,与旋转的叶片工作面存在定角度,气体在叶片涡作用沉积在非工作面上,当积灰达到定重量时由于叶轮旋转离心力的作用将部分大块积灰甩出叶轮。由于各叶片上的积灰不可能完全均匀致,聚集或可甩走灰块时间不定同步,因此叶片的积灰不均匀导致叶轮质量分布不平衡,使风机振动增大。
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轴流风机天津15选5动叶调节是通过传动机构带动滑阀改变液压缸两侧油压差实现的。在轴流风机的运行中,有时会出现动叶调节困难或完全不能调节的现象,通常会认为是风机调节油系统故障和轮毂内部调节机构损坏等。但在实际中通常是另外种原因在风机动叶片和轮毂之间有定的空隙以实现动叶角度造成动叶调节困难。解决的措施主要有1尽量使燃油或煤燃烧充分,减少碳黑,适当提高排烟温度和进风温度,避免烟气中的硫在空气预热器中的结露。
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