為了降低燃煤爐鼓風機的用電率、減少起動電流、提高功率因數(shù)、改善司爐工工作強度，提出了將變頻器用在燃煤爐鼓風機中。與傳統(tǒng)的燃煤爐鼓風機系統(tǒng)相比較，該系統(tǒng)利用變頻器進行流量（風量）控制時，可節(jié)約大量電能。通過詳細分析壓力H-流量Q曲線，得出變頻調速后風機所需功率明顯減少。同時，變頻器的軟啟動功能和平滑調速的特點可實現(xiàn)對系統(tǒng)的平穩(wěn)調節(jié)，使系統(tǒng)工作狀態(tài)穩(wěn)定，延長鍋爐各部件的使用壽命。最后通過實際數(shù)據(jù)可知使用變頻器后的燃煤爐鼓風機是節(jié)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.