A kind of bow high energy density vane design method and vane pump designed therefor

Abstract

The invention discloses a design method of an arcuate high energy density blade and a designed blade pump. The blade design method is as follows: the blade has a first end and a second end in the extension direction and a hub side and a rim side in the blade height direction, including the initial value of the wrap angle, the inlet angle, the profile line and the outlet angle. The initial value of the wrap angle is the circumferential angle between the axial surface of each point on the first end relative to the axial surface of the hub side of the first end, which is determined by the arcuate curve of the blade; the inlet angle is formed by the axial streamline of the first end of the blade. The distance between the tangent line and the plane perpendicular to the hub axis is determined by the zero velocity circulation criterion; the profile line is defined according to the distribution law of the placement angle of the blade along the relative axial streamline, and is determined by the axial flow calculation; the outlet angle is formed in the blade Between the tangent of the axial streamline of the second end and the plane perpendicular to the axis of the hub, it is determined by the axial flow calculation. The blades obtained by the blade design method of the invention can effectively improve the energy density of the vane pump and widen the stable operation range of the pump.

Description

technical field [0001] The invention relates to the technical field of vane pumps, in particular to a design method of an arcuate high energy density vane and a vane pump designed therefor. 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. Therefore, it is urgent to develop a vane pump with high energy density, so that it can output higher energy under the constraints of limited space. [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 improve the energy density of the pump under the design condition. However, the improvement effect of such methods is very limited, and in the partial Under working conditions, there will be a serious head drop, which will cause the pump to not run stably. SUMMARY...

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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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