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Torque flow pump hydraulic design method by adopting long-short vanes

A hydraulic design, swirl pump technology, applied in the direction of components, pumps, pump components, etc. of pumping devices used for elastic fluids, can solve the problems of hydraulic loss, low pump efficiency, etc.

Active Publication Date: 2014-05-07
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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  • Torque flow pump hydraulic design method by adopting long-short vanes
  • Torque flow pump hydraulic design method by adopting long-short vanes
  • Torque flow pump hydraulic design method by adopting long-short vanes

Examples

Experimental program
Comparison scheme
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Embodiment Construction

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

[0056] Blade thickness determination:

[0057]

[0058]

[0059] The diameter of the short blade inlet is determined:

[0060]

[0061] The blade wrap angle is determined:

[0062]

[0063]

[0064]

[0065] Short blade offset angle determination:

[0066]

[0067] Determine the number of leaves:

[0068] Take an even number, the length is half and half;

[0069] The main geometric parameters of the impeller are determined by the above calculation...

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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 using long and short blades. Background technique [0002] In foreign countries, the application of sewage and sewage submersible electric pumps has a tendency to expand, and it has replaced the clean water submersible pumps in many occasions. 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 flow out of the pressurized water chamber directly with the through flow without passing through the impeller, some of the solid particles still impinge on the impeller under the action of the circulating flow. Due to the simultaneous existence of through-flow and circulating flow in its interior, it causes great hydraulic loss. Therefore, its biggest disadvantage is that the pump efficiency is low, generally ≤50%. The impeller and the vortex...

Claims

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Application Information

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IPC IPC(8): F04D29/24
Inventor 王秀礼陈宗良付强
Owner XUZHOU FENGYUAN PUMPS