Lossless super-cavitation centrifugal pump impeller

Abstract

The invention relates to a lossless super-cavitation centrifugal pump impeller. The impeller is mainly composed of blades (1), an impeller front cover plate (2) and an impeller rear cover plate (3) and mainly characterized in that geometric structures of the super-cavitation blade pump blades (1) are modified, and according to the requirements of different design conditions, single short super-cavitation blades or combined blades combining the super-cavitation blades and non-overloading blades are adopted; and geometric shapes of blade inlets are modified to simultaneously meet the super-cavitation requirement and the requirement of allowing larger solid particles to pass through the impeller without a plunger, the blades in the impeller are prevented from being abraded by the large solid particles in the operating process, the frictional resistance to the blades in the operating process can be effectively reduced, the working efficiency of a super-cavitation pump is improved, and the service life of the super-cavitation pump is prolonged.

Description

technical field [0001] The invention relates to a method for designing the main parts of a centrifugal pump, in particular to a method for designing the impeller structure of a non-destructive supercavitation centrifugal pump. Background technique [0002] The single vane pump impeller can only have one vane from the impeller inlet to the impeller outlet, so there is also a curved flow path, which is suitable for transporting large particles or materials containing fibers, so it is used in many industries such as chemical industry, mining, food, construction, papermaking, etc. It is widely used in industrial processes. The vane pump is mainly composed of pump casing, impeller, motor and other components, and the impeller is the core hydraulic component of the vane pump and the only moving element. The geometric parameters of the impeller have a great influence on the performance of the vane pump. Hydraulic efficiency and stability performance have a major impact. [0003] ...

AI Technical Summary

Problems solved by technology

Nowadays, the single vane pump is a hot field in fluid machinery, and the goal of vane supercavitation drag reduction cannot be achieved only by transforming the original hydraulic design method, so the inventor here proposes a non-destructive supercavitation centrifugal pump The impeller can make good use of cavitation and achieve the purpose of reducing drag and increasing efficiency to a certain extent

[0005] In view of the above-mentioned defects, the inventor invented "a non-destructive supercavitation centrifugal pump impeller", which not only provides a design method for the supercavitation of the impeller blades of the single vane pump, but also solves the problem of single vane pump impeller to a certain extent. The role of blade drag reduction and efficiency increase, thus improving the performance instability of single-vane pumps, enhancing the reliability of single-vane pump operation, improving the hydraulic efficiency of single-vane pumps to a certain extent, and prolonging the service life and maintenance of pumps cycle

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