METHOD AND SYSTEM FOR CONTROLLING MAIN EXHAUST FAN

摘要

A method for controlling a main exhaust fan and a system for implementing the control method. The method comprises: obtaining air quantity of a large flue needed by normal sintering; obtaining the needed total negative pressure of the main exhaust fan by obtaining, by using multiple databases, a needed negative pressure of the large flue, a negative pressure needed to be consumed in a pipeline and a negative pressure needed to be consumed on an air door; and finally, controlling the main exhaust fan according to the total needed negative pressure of the main exhaust fan. By means of the method and the system thereof, the main exhaust fan can be controlled to only provide a negative pressure and air quantity for ensuring the demand of normal sintering, so that waste caused by an excessive air quantity is avoided, thereby achieving the purpose of saving energy.