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Bionic seat head whale-shaped centrifugal pump impeller

A centrifugal pump impeller and bionic seat technology, applied to pumps, pump components, non-variable pumps, etc., can solve problems such as cavitation at the leading edge of centrifugal pump impellers, reduce flow separation, suppress cavitation at the leading edge, and improve The effect of pressure

Pending Publication Date: 2022-07-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a bionic humpback type centrifugal pump impeller, which solves the problem of cavitation at the leading edge of the existing centrifugal pump impeller

Method used

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  • Bionic seat head whale-shaped centrifugal pump impeller
  • Bionic seat head whale-shaped centrifugal pump impeller
  • Bionic seat head whale-shaped centrifugal pump impeller

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Design speed is 1500r / min, design flow is 100m 3 / h, the design head is 10m. By adding a bionic segment to change the shape near the inlet edge of the blade, the cavitation of the leading edge of the blade is effectively suppressed, the blocking effect of the cavitation on the mainstream is weakened, the flow loss is reduced, and the working ability of the impeller is effectively improved. Figure 4 In order to adopt the cavitation performance comparison curve of the bionic humpback whale centrifugal pump impeller of the present invention and the conventional centrifugal pump under small flow conditions, the lift of the bionic blade under different NPSH is higher than that of the conventional blade, and the necessary steam of the two impellers is The pit allowances were 5.5m and 6.2m, a decrease of 11.3%, and the cavitation performance was greatly improved.

[0029] When the centrifugal pump operates under low flow conditions, the relative flow angle of the fluid at th...

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PUM

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Abstract

The bionic seat head whale-shaped centrifugal pump impeller comprises a front cover plate and a rear cover plate which are oppositely arranged, bionic seat head whale-shaped blades are arranged between the front cover plate and the rear cover plate, a through hole is formed in the center of the plate face of the rear cover plate, and the bionic seat head whale-shaped blades are evenly arranged in the circumferential direction of the through hole. By means of the bionic seat head whale type design of the blade inlet edge, the flowing state of blade inlet water flow is changed, flowing separation of the front edge of the blade is reduced, the pressure of the vortex core center is improved, front edge cavitation is restrained, and therefore the cavitation performance of the centrifugal pump is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery equipment, and particularly relates to a bionic humpback whale type centrifugal pump impeller. Background technique [0002] As one of the basic and strategic general-purpose machinery in the national economy, centrifugal pumps are known as the "heart of modern industry". field. As the core component of the centrifugal pump, the impeller converts the mechanical energy into the pressure energy of the fluid by rotating, so as to achieve the purpose of fluid pressurization. Therefore, the three-dimensional geometry of the impeller directly determines the performance of the centrifugal pump. [0003] Due to the change of the operating environment and working conditions, the inlet pressure of the centrifugal pump will also change accordingly. When the drop is large, cavitation will be formed in the local area of ​​the suction surface of the blade, resulting in the deterioration of the flow fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24
CPCF04D29/242
Inventor 王李科罗兴锜卢金玲冯建军朱国俊
Owner XIAN UNIV OF TECH
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