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Centrifugal pump with double-layer guide vane blades

A technology of guide vanes and centrifugal pumps, applied in the parts, pumps, pump components of pumping devices for elastic fluids, etc., can solve problems such as difficulty in meeting customer requirements, reducing pump service life, etc., to improve the whole machine. performance, extended service life, simple and convenient operation

Inactive Publication Date: 2018-06-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Noise and vibration from these pulsations create alternating stresses that reduce pump life
Therefore, there are still some deficiencies in the design of the existing guide vanes, and it is difficult to meet the requirements of customers

Method used

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  • Centrifugal pump with double-layer guide vane blades
  • Centrifugal pump with double-layer guide vane blades
  • Centrifugal pump with double-layer guide vane blades

Examples

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0016] Such as figure 1 , figure 2 and image 3 As shown, a centrifugal pump using double-layer guide vane blades in the present invention is mainly composed of impeller 1, guide vane 2 and volute 3 from inside to outside, and the guide vane 2 includes several groups of double-layer guide vane blades 21; Each group of double-layer guide vane blades 21 is composed of two layers of guide vane blades 211 arranged in parallel, one layer is attached to the front cover plate of the guide vane, and the other layer is attached to the rear cover plate of the guide vane, and a certain gap is left between the two layers of guide vane blades .

[0017] As a preferred embodiment of the present invention, the number of the double-layer guide vane blades 21 is 4-8 groups.

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Abstract

The invention discloses a centrifugal pump with double-layer guide vane blades. The centrifugal pump is mainly composed of an impeller, a guide vane and a volute from inside to outside; the guide vaneinternally comprises a plurality of sets of double-layer guide vane blades; each set of the double-layer guide vane blades is composed of two layers of guide vane blades arranged in parallel, one layer of the guide vane blades is affixed to a front cover plate of the guide vane, and the other layer of the guide vane blades is affixed to a rear cover plate of the guide vane; and a preset gap is left between the two layers of the guide vane blades, and the optimum width of the gap is 0.4-0.6 time the width of a guide vane flow pass. According to the centrifugal pump with the double-layer guidevane blades, the structure is simple and easy to realize, not only can the pressure recovery coefficient of fluid be increased, but also the radial force acting on the impeller can be reduced and theservice life of the centrifugal pump can be prolonged.

Description

technical field [0001] The invention relates to the technical field of hydraulic machinery, in particular to a centrifugal pump using double-layer guide vane blades. Background technique [0002] Centrifugal pumps are widely used in various fields of the national economy as a general machine. Centrifugal pump is a pump that converts mechanical energy into kinetic energy and pressure energy of liquid by the high-speed rotation of the impeller. Centrifugal pump has a wide application range of flow rate and head, high efficiency and reliable performance. The guide vane is an important part of the centrifugal pump. [0003] The existing guide vane has only one layer of guide vane blades. The working principle of the centrifugal pump using this guide vane is as follows: when the centrifugal pump is working, the centrifugal force generated by the rotation of the impeller will throw the liquid out from the outlet of the impeller, and the guide vane will throw the impeller out. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44
Inventor 李国君江伟赖芬朱相源
Owner XI AN JIAOTONG UNIV
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