Fluctuation of fan inlet guide vane valve
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The device is equipped with an inlet guide vane valve for the fan, a double-acting actuator, and a Siemens positioner. When the operator adjusts the valve opening, significant fluctuations occur in the valve’s operation. The pressure at the fan’s outlet is used in the interlock system; this situation is urgent, so I’m seeking advice from everyone
The position might not be ideal, causing resonance; the angle can be adjusted slightly to move it away from this area
It seems that the main issue is the stress on the guide vanes once the fan starts operating; the actuator does not have sufficient strength, and the regulator tries to eliminate the deviations, which leads to overshoot and oscillations. This problem is less severe when the actuator remains unchanged. I’m not sure what good solutions there are