Inverter in the application of induced draft fan
Application of Frequency Converter in Induced Draft Fan
Pic（一）outside of factory
Pic（二）Product line
Pic（三）load machine：centrifugal fan 355KW
一The original system works: smelting furnace normal smelting process, a smelting silicon cycle is divided into several cycles. Different periods of the furnace discharge of the flue gas is not the same, so by adjusting the size of the fan valve to control the size of the flue gas discharge. In the sorting centrifugal fan under the effect of ultra-grading, silicon powder into the pipeline through the feeder, mixed with the negative pressure air into the sorting machine, separated from the coarse ash ash into the coarse ash library; fine ash was negative pressure The air flow into the multi-tube collector, collected fine ash by wear-resistant rotary discharge valve unloading fine ash library; dust gas filter by the bag filter, sorted by the centrifugal fan into the flue gas channel. The silica fume filtered by the precipitator is conveyed by a wear-resistant rotary feeder to the fine ash library.
Pic （四）System distribution room
Pic（五）Inverter conversion of fan electric control cabinet
1
the entire plant system power distribution cabinet, the second picture is the original system of the star delta start and frequency and frequency converter conversion work (when the failure of the frequency and frequency converter conversion, to maintain the entire system are running ).
2. the solution: different products can be converted by frequency (potentiometer) can be achieved. You can make the operation simple and convenient, can also achieve energy saving effect. But also can improve the quality of silica. And has a soft start function, you can also reduce the wear and tear equipment, equipment noise to reduce costs and extend the life of the motor.
Pic（七、八）control schematic diagram
The parameters set as follows：
P0.01=2
P0.02=1
P0.03=2: The frequency setting mode is the external potentiometer
P0.17=200S P0.18=200S P6.10=1 P4.13=0.10