Petrochemical fan unit efficiency dynamic monitoring and energy level evaluation system

The invention relates to a petrochemical fan unit efficiency dynamic monitoring and energy level evaluation system, which comprises a data acquisition module, an energy efficiency evaluation module, a data storage module, a data display module and a real-time control module. And performance parameters such as inlet and outlet air pressure, inlet and outlet temperature, flow, voltage and current of the connected motor and the like of the axial-flow fan and the centrifugal fan are obtained from the DCS. For the data which cannot be acquired from the DCS, a pre-stored fan model is called through a data storage module so as to obtain corresponding working condition characteristic parameters of the fan model; efficiency calculation is carried out on various parameters of an axial flow fan, a centrifugal fan and a connected motor, and the energy efficiency grade is determined according to a formulated energy efficiency evaluation standard; according to the method, suggestions and adjustment schemes are given accord