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Centrifugal pump impeller with detachable blades

A centrifugal pump impeller and blade technology, which is applied to the components, pumps, and pump components of the pumping device for elastic fluids, can solve the problems of cavitation, vortex, and blades affecting efficiency, and achieves reduced friction loss and convenience. Effects of research, convenience performance impact

Pending Publication Date: 2021-07-09
TAIZHOU TAIFENG PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What the present invention aims to solve is to solve the problems that too many or too few blades affect the efficiency, and produce vortex and cavitation when operating in different working conditions, and propose a centrifugal pump impeller with detachable blades

Method used

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  • Centrifugal pump impeller with detachable blades
  • Centrifugal pump impeller with detachable blades
  • Centrifugal pump impeller with detachable blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Including the front cover 1 of the impeller and the through hole 2 used for connection on the front cover 1 and the convex groove 4 of the front cover, and the hub 5 connected with the generator bearing and the convex groove 6 of the rear cover on the surface of the rear cover 3 , the front cover 1 connects the rear cover 3 and the blades 8 containing through holes through cylindrical bolts 7, and the blades 8 and 9 are straight blades without radians.

[0034] The through hole 2 on the front cover 1 is in order to connect the rear cover 3 to prevent the front and rear cover from being separated. Wheel hub 5 is in order to cooperate with generator rotating bearing. For the stability of the fixation, the 4 blades with holes are arranged at intervals of 90°. If you want to add or reduce blades, you need to unscrew the bolt 7 to separate the front and rear cover plates, and remove or add the corresponding blades. In order to ensure the symmetry of the flow channel, it is ...

Embodiment 2

[0036] Referring to Embodiment 1, other features remain unchanged, and the convex groove 4 of the front cover plate, the convex groove 6 of the rear cover plate, the blades 8, 9 and the blade grooves are changed to circular arc shapes. The radian of the blade interface near the hub 5 is the smallest, and the radian gradually becomes larger along the direction of the outer diameter of the impeller.

Embodiment 3

[0038] Referring to Embodiment 1, the number of blades can be changed to 6 blades, and the blades can be straight blades or arc blades; in order to fix stability, a triangle fixing form can be selected, and 3 blades with holes are arranged at intervals of 120°. Unscrew the bolt 7 to separate the front and rear cover plates to change the number of blades. In order to ensure the symmetry of the flow channel, it is recommended to increase or decrease 3 blades symmetrically at a time, so it can be adjusted to 3 blades or 6 blades.

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Abstract

The invention relates to a centrifugal pump impeller with detachable blades. The centrifugal pump impeller comprises a front cover plate, a rear cover plate, front cover plate convex grooves, rear cover plate convex grooves, a hub, bolts and the blades. The centrifugal pump impeller is characterized in that through round holes are formed in the front cover plate and the rear cover plate separately, and the front cover plate and the rear cover plate and are connected through the bolts; the blades may be straight blades or arc-shaped blades; and clamping grooves matched with each other are formed in the front cover plate, the rear cover plate and the blades separately. Different from a traditional impeller, the impeller has the advantages that the front cover plate and the rear cover plate can be separated through the bolts, and the number of the blades can be conveniently changed after separation, and on the other hand, for the symmetry of a flow channel, the impeller with another number of blades can be designed as required according to the symmetry of the flow channel. The impeller has the advantages that the influence of changing the number of the blades on the hydraulic performance can be researched, and multiple sets of related impellers do not need to be produced, so that operation is easy, installation is convenient, safe and reliable, the cost is reduced, and the efficiency of research work is improved.

Description

technical field [0001] The invention relates to the field of liquid delivery, in particular to a centrifugal pump impeller with detachable blades. Background technique [0002] Large centrifugal pumps are widely used in many fields such as marine ships, petrochemical industry, aerospace, etc. Where there are fluids, there are pump applications. As the key power equipment for fluid transportation, the efficiency and stability of the centrifugal pump are the key performance indicators, and the impeller as its core rotating hydraulic component largely determines the stability and efficiency of the entire centrifugal pump. With the increasing application of water pumps, the problem of impeller blades has also been paid more and more attention. Traditional impellers are designed according to the design working conditions and are based on the fixed number of blades, and the number of blades cannot be adjusted as the working conditions change. When it operates in non-design condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/24F04D29/62
CPCF04D29/2222F04D29/242F04D29/628
Inventor 阮明伟吉志凯杨科朱荣生付强王秀礼
Owner TAIZHOU TAIFENG PUMP IND