风机叶轮使用中会出现震动现象，这是什么原因呢？
Vibration phenomenon occurs in the use of fan impeller. What is the reason?
风机叶轮使用中会出现震动是叶轮不平衡的原因，叶轮出现不平衡的原因是什么呢？出现问题该如何解决呢？
The vibration of fan impeller is caused by the imbalance of impeller. What is the reason for the imbalance of impeller? How to solve the problem?
1、叶轮表面在高温下很容易氧化,生成厚厚的氧化皮.这些氧化皮与叶轮表面的结合力并不是均匀的,某些氧化皮受振动或离心力的作用会自动脱落,这也是造成叶轮不平衡的一个原因。
the surface of the impeller is easy to oxidize at high temperature to produce a thick oxide skin. The bonding force between these oxide skins and the surface of the impeller is not uniform, and some oxide skin will fall off automatically by the action of vibration or centrifugal force, which is also a reason for the imbalance of the impeller.
2、风机的叶轮的磨损问题,这是产生叶轮使用不平衡的直接原因,磨损的状况是因干式除尘装置引起,它虽然可以除掉烟气中绝大部分大颗粒粉尘,但少量大颗粒和许多微小的粉尘颗粒随同高温、高速的烟气一起通过引风机,使叶片遭受连续不断地冲刷.这样,在叶片出口处形成刀刃状磨损.由于这种磨损是不规则的,因此造成了叶轮的不平衡。
The abrasion of the impeller of the fan is the most direct reason for the uneven use of the impeller. The condition of the wear is caused by the dry dust removal device. Although it can remove most of the large particle dust in the flue gas, a small amount of large particles and a lot of small dust particles are used together with the high temperature and high speed flue gas through the fan to make the leaves. The blade is subjected to continuous erosion. In this way, blade wear is formed at the outlet of the blade. Due to the irregular wear, the impeller is unbalanced.
3、风机结垢问题是湿法除尘装置净化烟气湿度很大,未除净的粉尘颗粒虽然很小,但粘度很大.当它们通过引风机时,在气体涡流的作用下会被吸附在叶片非工作面上,特别在非工作面的进口处与出口处形成比较严重的粉尘结垢,并且逐渐增厚.造成了叶轮结垢。
The problem of wind turbine scaling is that the wet dust removal device purify the humidity of the flue gas very much. Although the dust particles are very small, the viscosity of the dust particles is very small. When they pass the air draught machine, they will be adsorbed on the non working surface of the blade under the action of the gas eddy, especially in the inlet and outlet of the non working surface. Gradually thickening, causing the impellers to scale.
风机震动后，叶轮就需要重新做动静平衡测试和校正，否则会严重影响风机的稳定性，同时也会缩短使用寿命。
After the fan vibrates, the impeller needs to be re tested and corrected dynamically, otherwise it will seriously affect the stability of the fan and shorten the service life.
以上说到的只是常出现的几个问题，使用过程中还会遇到一些其它原因,处理的时候要根据风机的实际情况,然后进行解决问题。
The above mentioned is only a few problems that often occur, and some other reasons are encountered in the process of use. When dealing with the actual situation of the fan, the problem will be solved.
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