Double-suction type holosymmetrical multi-stage pump

A fully symmetrical, multi-stage pump technology, applied in the direction of non-variable pumps, non-volume pumps, pumps, etc., can solve the problems of low axial force efficiency, cavitation performance, etc., to facilitate collection and confluence, and expand the performance range , the effect of increasing traffic

Pending Publication Date: 2019-12-31
湖南自平衡多级泵制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a double-suction fully symmetrical multi-stage pump to solve the problems of axial force balance, performance expansion, low efficiency and cavitation performance in the above-mentioned background technology

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  • Double-suction type holosymmetrical multi-stage pump

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "left", "right", "inner", "outer", "both ends", "one end" and "another end" are Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element m...

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Abstract

The invention discloses a double-suction type holosymmetrical multi-stage pump. The double-suction type holosymmetrical multi-stage pump comprises secondary impellers, a double-suction impeller and adouble-suction pump body, the double-suction pump body is arranged outside the double-suction impeller, the double-suction impeller is of a holosymmetrical structure, and the double-suction pump bodyis located on the coaxial line of the double-suction impeller. According to the double-suction type holosymmetrical multi-stage pump, the multi-stage double-suction pump can be conveniently assembledon the premise that existing single-suction type multi-stage pump parts are utilized to the maximum limit, the flow of the pump is multiplied, and the performance range of the pump is widened; primaryimpellers, the secondary impellers and the double-suction impeller are arranged in a holosymmetrical manner, therefore, the axial force is thoroughly balanced, and the theoretical axial force is equal to zero; the flow passing area of the primary impellers is increased compared with that of the secondary impellers, and therefore the cavitation performance of the pump is improved; through use of the double-suction impeller and the double-suction pump body, liquid collection and confluence are convenient, and the hydraulic efficiency of the pump is improved; and a double shaft extension schemeis adopted, therefore, driving can be achieved from any one end, and the diversity requirements of pump installation are met.

Description

technical field [0001] The invention belongs to the related technical field of multistage double-suction pumps, and in particular relates to a double-suction fully symmetrical multistage pump. Background technique [0002] The multi-stage pump is to connect the impellers of the single-stage pump concentrically through a shaft to increase the head or pressure of the pump under the condition of constant flow. A pump with two impellers is called a two-stage pump, and a pump with multiple impellers is called a multi-stage pump. The medium is first inhaled from the first-stage impeller, after being pressurized by the first-stage impeller, it enters the suction port of the second-stage impeller through the flow channel or guide vane, and is pressurized by the second-stage impeller, and so on. After being pressurized by the multi-stage impeller, the medium is The outlet section is collected by the vortex chamber and flows out through the outlet flange, which is essentially a singl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/06F04D29/22F04D29/66
CPCF04D1/006F04D1/06F04D29/2216F04D29/669
Inventor 潘世群刘小菊王立
Owner 湖南自平衡多级泵制造有限公司
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