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A hydraulic design method of swirl pump with long and short blades

A technology of hydraulic design and swirl pump, which is applied to parts, pumps, pump components, etc. of pumping devices for elastic fluids, and can solve problems such as hydraulic loss and low pump efficiency

Active Publication Date: 2017-03-01
XUZHOU FENGYUAN PUMPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the simultaneous existence of through flow and circulating flow inside it, it causes a large hydraulic loss
Therefore, its biggest disadvantage is that the pump efficiency is low, generally ≤50%

Method used

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  • A hydraulic design method of swirl pump with long and short blades
  • A hydraulic design method of swirl pump with long and short blades
  • A hydraulic design method of swirl pump with long and short blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] figure 1 and figure 2 Together determine the shape of the impeller and the vortex chamber of the swirl pump. It can improve the flow condition in the pump, improve the non-clogging performance, wear resistance and operation reliability of the swirl pump. The present invention determines blade thickness (1), short blade inlet diameter (2), blade wrap angle (3), short blade offset angle (4) and blade number (5) through the following relational expressions.

[0056] Blade thickness determination:

[0057]

[0058]

[0059] Short blade inlet diameter determination:

[0060]

[0061] Determination of blade wrap angle:

[0062]

[0063]

[0064]

[0065] Short blade offset angle determination:

[0066]

[0067] The number of leaves is determined:

[0068] Take an even number, half and half;

[0069] Determine the main geometric parameters of the impeller through the above calculation method, including impeller outer diameter, impeller outlet ...

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Abstract

The invention relates to a torque flow pump hydraulic design method by adopting long-short vanes. According to the method, the design formulas of vane thickness, an inlet diameter of short vanes, wrapping angles of vanes, offset angles of the short vanes and a vane number are given. Torque flow pump impellers designed according to the design method can improve flow situation inside a pump, and improve the blocking-free performance, the abrasive resistance and reliability of operation of a torque flow pump.

Description

technical field [0001] The invention relates to a hydraulic design method of a swirl pump with long and short blades. Background technique [0002] The application of foreign sewage and sewage submersible electric pumps has a tendency to expand, and many occasions have replaced clean water submersible pumps. Structurally, the impeller of the swirl pump retracts to the back chamber of the bladeless cavity, and the blades are mostly in the form of straight blades. Although most of the solid particles directly flow out of the pressurized water chamber with the through-flow without passing through the impeller, some still impact the impeller under the action of the circulating flow. Due to the simultaneous existence of through flow and circulating flow inside it, a large hydraulic loss is caused. Therefore, its biggest disadvantage is that the pump efficiency is low, generally ≤50%. The impeller and vortex chamber are the core components that affect the performance of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/24
Inventor 王秀礼赵媛媛陈宗良付强
Owner XUZHOU FENGYUAN PUMPS