Diffuser suitable for vane pump

Abstract

The invention discloses a diffuser suitable for a vane pump. The diffuser is composed of a front cover plate, a rear cover plate and guide vanes which are symmetrically arranged between the front cover plate and the rear cover plate; the front cover plate and the rear cover plate are each of a plane annular structure; isolation plates which are parallel to the planes of the front cover plate and the rear cover plate, crossed with the guide vanes and each of an annular structure are arranged between the front cover plate and the rear cover plate; and the radial length of the isolation plates ofthe annular structure is smaller than the radial length of the front cover plate or the rear cover plate. The inner diameter of the isolating plates is equal to the diameter of inlets of the guide vanes, and the outer diameter of the isolation plates is smaller than the diameter of outlets of the guide vanes. The diffuser structure can effectively improve the flow field distribution of the guidevanes or volutes of the diffuser of the vane pump, increase the flow stability, reduce the energy loss of fluid and improve the overall performance of the vane pump. After test measurement, it is found that the diffuser provided by the invention can improve the diffusion performance by 0.5%-2%, and the energy-saving effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of design and manufacture of fluid transport pumps, and in particular relates to the design and manufacture of a diffuser suitable for vane pumps. Background technique [0002] In petrochemical, agricultural, and power industry applications, it is often necessary to use vane pumps to transport flowing media. The diffuser is an important component structure of the vane pump, including the guide vane or volute structure. As a key hydraulic component of the vane pump, the diffuser greatly affects the delivery efficiency. [0003] Due to the uneven pressure and velocity distribution of the fluid in the diffuser, it forms a complex three-dimensional flow in space, and various forms of vortices are formed in the diffuser flow channel, resulting in energy loss of the fluid and instability of the flow. With the development of technology and market demand, there is an urgent need for a diffuser that can improve the ...

AI Technical Summary

Problems solved by technology

[0003] Due to the uneven pressure and velocity distribution of the fluid in the diffuser, it forms a complex three-dimensional flow in space, and various forms of vortices are formed in the diffuser flow channel, resulting in energy loss of the fluid and instability of the flow.

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