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A radial curved blade centrifugal pump impeller

A centrifugal pump impeller and blade technology, applied in the direction of pumps, pump components, non-variable pumps, etc., can solve the problems of no improvement in hydraulic performance, achieve the effects of improving pump performance, improving work efficiency, and increasing the effective area

Active Publication Date: 2020-07-17
POWERCHINA SPEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly a variety of design methods, such as "blade inlet and outlet installation angle" and "blade wrap angle", etc., but none of the above methods are based on the essential shape and structure of the blade to improve the hydraulic performance

Method used

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  • A radial curved blade centrifugal pump impeller
  • A radial curved blade centrifugal pump impeller
  • A radial curved blade centrifugal pump impeller

Examples

Experimental program
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Effect test

Embodiment

[0024] The radial curved blade centrifugal pump impeller includes a front cover plate 1, a rear cover plate 2, blades 3 and a hub 4, the hub 4 is connected to the pump shaft, the blades 3 are evenly distributed on the hub 4, and the The blade 3 is a curved surface structure that is concave or convex from both sides along its width direction, and the intersection line between the blade 3 and its cross-section in the width direction is C-shaped.

[0025] The intersection points of the C-shaped intersection lines on the plane where the front cover 1 and the rear cover 2 are located are respectively P 1 and P 3 , the intersection points of the C-shaped intersection lines on the plane where the front cover 1 and the rear cover 2 are located are respectively P 1 and P 3 , the highest point of the C-shaped intersection line is P 2 , P on the C-shaped intersection line 1 The tangent at and P 1 P 3 Angle α between connecting lines 1 Satisfy 0°﹤α 1 3 The tangent at and P 1 P 3...

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PUM

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Abstract

The invention relates to a radial bent blade centrifugal pump impeller. The radial bent blade centrifugal pump impeller comprises a front cover plate (1), a rear cover plate (2), blades (3) and a hub(4), wherein the hub (4) is connected to a pump shaft, the blades (3) are uniformly distributed on the hub (4); the blades (3) is a curved surface structure which is concave inwards or outwards from the two sides in the width direction of the blades (3), and the cross line of the blades (3) and the plane in the width direction of the blades (3) and passing through the axis of the pump shaft is C-shaped. Compared with the prior art, the impeller has the advantages of being high in efficiency, high in lift, low in noise and the like.

Description

technical field [0001] The invention relates to an impeller, in particular to a centrifugal pump impeller with radially curved blades. Background technique [0002] Centrifugal pumps are widely used in power plant water circulation, municipal water supply, chemical industry, transportation, water conservancy and new energy engineering fields. The centrifugal pump impeller structure is diffuse, and there will be flow separation, secondary vortex and other flow phenomena during operation. These phenomena directly affect The flow field in the flow channel is distributed and there is energy dissipation, which eventually leads to a decrease in the efficiency of the centrifugal pump. The blade parameters are closely related to the performance of the pump. In the impeller design of a centrifugal pump, the circumferential bending of the blade is an effective way to improve the hydraulic performance of the pump. At present, there are mainly a variety of design methods, such as "blad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/24F04D29/22F04D29/66
CPCF04D29/2222F04D29/242F04D29/669
Inventor 胡永海陈乃娟
Owner POWERCHINA SPEM CO LTD
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