Method of regulating and controlling air volume of sintering machine by using main ventilation valve and rotating speed in combined mode
A technology of joint regulation and damper, applied in the field of metallurgical production, can solve the problem of inability to adjust, and achieve the effects of reducing consumption, improving strength index, and improving particle size composition.
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[0021] According to the relationship between fan characteristic curve, air volume Q=K1×(fan speed) N; pressure P=K2×(fan speed) N 2 ;Power W=K3×(fan speed) N 3 ;
[0022] K1=1~1.5
[0023] K2=1.15~1.2
[0024] K3=1.2
[0025] That is: the air volume is proportional to the speed, the pressure is proportional to the square of the speed, and the power is proportional to the cube of the speed.
[0026] If the fan speed is reduced from 100% to 90%, the corresponding air volume is reduced to 90%, the pressure is reduced to 81%, and the power is correspondingly reduced to 72.9%.
[0027] The first step is to formulate the "machine speed-air volume relationship table" according to the functional experiments of sintering machines under different working conditions to find the required air volume range for the current machine speed;
[0028] The second step is to formulate the "fan damper-speed-air volume relationship table" based on the fan characteristic curves of different fans....
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