Optimisation Study of Guide Vane Blade Type of Centrifugal Ventilator for Coal Mine Use
Centrifugal ventilator is an important safety mechanical equipment in coal mines.Taking centrifugal ventilator for coal mines as the research object,the finite element model of ventilator was established by using UG and CFD commercial software.Three kinds of guide vane structures,namely,flat plate type,arc type and wing type,are designed,and the wing type structure is found to have better performance after finite element analysis.In order to further determine the parameters of the airfoil structure,four different airfoil structures were designed,and the comparative analysis was carried out again,and it was found that the full pressure of the fan corresponding to the third airfoil structure and the efficiency of the fan were much higher than the other structures.Under the design flow and high flow conditions,the efficiency of the fan with wing type 3 guide vane structure is 1.3％and 5.1％higher than that of the fan with flat plate type guide vane,respectively.Therefore,the ventilator guide vanes can be determined as wing type 3 structural form.
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