为了降低燃煤炉鼓风机的用电率、减少起动电流、提高功率因数、改善司炉工工作强度,提出了将变频器用在燃煤炉鼓风机中。与传统的燃煤炉鼓风机系统相比较,该系统利用变频器进行流量(风量)控制时,可节约大量电能。通过详细分析压力H-流量Q曲线,得出变频调速后风机所需功率明显减少。同时,变频器的软启动功能和平滑调速的特点可实现对系统的平稳调节,使系统工作状态稳定,延长锅炉各部件的使用寿命。最后通过实际数据可知使用变频器后的燃煤炉鼓风机是节能的。Abstract: In order to lower the power consumption rate of coal-fired furnace blower, to reduce the starting current, to increase the power factor, and to improve the fireman?蒺s working intensity, frequency converter was proposed to be used in coal-fired furnace blower. Compared to the traditional coal-fired furnace blower system,this system used converter to control the flow(air volume), which could save a lot of power. Through a detailed analysis of the pressure H-flow Q curve, it is clear that after the frequency conversion, the required power of blower is reduced. Meanwhile, the soft-start function of the converter and the feature of smooth speed governing could realized the smooth adjustment of the system,which made the system worked stable and extended the service life of various components of the boiler. Finally, the practice data shows it is energy-efficient to use the frequency converter in coal-fired furnace blower.
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