Design method for high-efficiency whirlpool pump impeller

A design method, vortex pump technology, applied to parts, pumps, pump components, etc. of pumping devices used for elastic fluids, can solve problems such as low efficiency, large hydraulic loss, energy waste, etc., to reduce capacity and save energy , the effect of reducing investment

Inactive Publication Date: 2011-04-13
江苏国泉泵业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the special structure of the vortex pump, there is a circulating flow inside, and the hydraulic loss

Method used

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  • Design method for high-efficiency whirlpool pump impeller
  • Design method for high-efficiency whirlpool pump impeller
  • Design method for high-efficiency whirlpool pump impeller

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0028] figure 1 with figure 2 The shape of the impeller of this embodiment is jointly determined. Like most centrifugal pump impellers, it has an impeller rear cover (1) and is an open impeller. The impeller blades are divided into low blades (3) and high blades (4). The high and low blades are arranged alternately. The number of impeller blades is even, and the number of blades is greater than or equal to 4, which can improve the flow condition and increase the head and efficiency of the vortex pump. The present invention uses the following relations to determine the outlet width b of the impeller blade 2 , The outer diameter of the impeller blade D 2 , The exit placement angle of the impeller blade β 2 , Impeller blade wrap angle And the height difference of the height of the blade Δh.

[0029] D 2 = ( 25 ~ 26 ) 2 gH n ;

[0030] b 2 D 2 = 0.000575 n s 1.25 ;

[0031] β 2 =15°~25°;

[0032]

[0033] Δh=(15%...

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Abstract

The invention relates to a design method for a high-efficiency whirlpool pump impeller. In the method, the designing formulas for the main geometric parameters of a blade, such as the outer diameter, the width of an outlet, outlet positioning angle, a blade wrap angle and the altitude differences of high and low blades. By means of the impeller designed by the method in the invention, the floating condition in a volute can be improved, and the pump lift and efficiency of the whirlpool pump are improved, thus reducing the capacity of the selected motor, reducing the investment, and saving energy resources.

Description

technical field [0001] The invention relates to a method for designing the main parts of a non-variable pump, in particular to a method for designing an impeller of a high-efficiency vortex pump. Background technique [0002] At present, known vortex pumps use radial impellers, which only ensure that the vortex pump operates within a narrow flow range. If the operating conditions exceed the pump's operable range, the motor may burn out. However, the operating conditions of the vortex pump vary greatly, and the head of the pump device will change greatly, resulting in the actual working point of the vortex pump moving within a large flow range. According to statistics, about 70% of the faults of the repaired submersible pumps are caused by overload. The reliability of this type of pump is low due to the failure of the motor due to overload, which greatly limits the scope of use of the vortex pump. [0003] In order to obtain a gentle power curve, curved blades are required,...

Claims

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Application Information

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IPC IPC(8): F04D29/22
Inventor 朱荣生杨爱玲
Owner 江苏国泉泵业制造有限公司
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