Numerical Simulation On The Performance Of Mixed Flow Circulation Pump In 300MW Unit For The Adjustment Of Its Structure Parameter

Basing on the great efforts research of the two kinds of pump design methods,the triangle method and the grid method,compare their disadvantage and advantage,find a new way in triangle method to control the vane wrap angle to optimize thevane design, improve the pump efficiency. Basing on a great deal of calculation,study how the pump structure parameters influence the performance curve of mixedflow pump, such as the adjustment of the blade inlet and outlet angle,the magnitudeof the inlet edge curvatureand the cutting off of the blade outside diameter;simulate the flow field with fluentsoftware, get the lift and other parameters from calculating result, thus draw theQ-H curve. By the way of performance curve, compare the influence effect forvarious structure parameters. And find the regularity from the experimentationdata, guide the pump design.