Research and Application of Wide and Efficient Hydraulic Design Method in Centrifugal Pump
In order to achieve wide and high efficient of the centrifugal pump,and realize the goal of en-ergy conservation and efficiency enhancement of pump equipment.Through the analysis of the mechanism of centrifugal pump width and high efficiency,and the basic law of the width and the high efficiency of centrifugal pump is revealed.The method of blade partition design is put forward,which divides the blade corner range into three zones,namely non-control zone,transition zone and control zone.First-ly,the angle distribution line of the inlet angle to the outlet angle of the pump blade is designed and the calculus equation is applied to solve the conformal transformation line in the square grid,so as to produce a wide and efficient centrifugal pump impeller profile.The test results show that the impeller design method achieves the energy-saving characteristics of centrifugal pumps with wide and high efficiency,and the matching power or input power of the motor is reduced.Both the mechanism and the experiments prove that the shape of the distribution line from the inlet Angle to the outlet angle of the impeller of the centrifugal pump is the key factor determining the width and efficiency of the centrifugal pump.
wide and efficient centrifugal pumpblade zoning designblade angle distribution lineopti-mal wrapping angle of the bladeblade turning angle
NETL
NSTL
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