Arch-shaped high-energy-density blade design method and designed vane pump thereof

Abstract

The invention discloses an arch-shaped high-energy-density blade design method and a designed vane pump thereof. The arch-shaped high-energy-density blade design method comprises the steps that the blade is provided with a first end and a second end in the extension direction and is provided with a hub side and a rim side in the blade height direction, and a wrap angle initial value, an inlet angle, a molded line and an outlet angle are included. The wrap angle initial value is a circumferential angle between the axial surface of each point on the first end and the hub side axial surface of the first end, and is determined by an arch curve of the blade; the inlet angle is formed between the tangent line of the axial surface streamline of the first end of the blade and the plane perpendicular to the axis of the hub, and is determined by a zero-speed circular rector criterion; the molded line is defined according to a distribution rule of a blade mounting angle along a relative axial surface flow line and is determined by axial surface flow calculation; and the outlet angle is formed between a tangent to an axial flow line of the second end of the blade and a plane perpendicular to the hub axis, and is calculated and determined by axial flow. According to the arch-shaped high-energy-density blade design method, the energy density of the blade pump can be effectively improved, and the stable operation interval of the pump can be widened.

Description

technical field [0001] The invention relates to the technical field of vane pumps, in particular to a design method for arcuate high-energy-density vanes and a designed vane pump. Background technique [0002] In recent years, vane pumps have been widely used in many fields such as energy power, aerospace and marine power, and the requirements for the working energy density of pumps are increasing day by day. Therefore, it is urgent to develop a vane pump with high energy density to output higher energy under limited space constraints. [0003] At present, the method of improving the energy density of the vane pump is mainly to modify the profile of the vane and the flow channel of the pump to increase the energy density of the pump under the design working condition, but the effect of this method is very limited, and in partial Under working conditions, there will be a serious head drop, which will cause the pump to not run stably. Contents of the invention [0004] The...

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Problems solved by technology

[0003] At present, the method of improving the energy density of the vane pump is mainly to modify the profile of the vane and the flow channel of the pump to increase the energy density of the pump under the design working condition, but the effect of this method is very limited, and in partial Under working conditions, there will be a serious head drop, which will cause the pump to not run stably

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