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Method for optimizing dummy plate of double-volute type double-suction pump and product produced with same

An optimization method and technology of double-suction pump, which are applied to non-variable-capacity pumps, components of pumping devices for elastic fluids, pumps, etc., can solve the problems of inability to meet the working requirements of the pump, reduction of head and efficiency, etc. Achieve the effect of avoiding liquid energy loss, reducing impeller radial force and easy operation

Inactive Publication Date: 2011-04-27
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no numerical simulation research on the optimization method of double-volute double-suction pump diaphragm, and unreasonable diaphragm design will lead to a significant reduction in pump lift and efficiency, which cannot meet the actual pump requirements. Work requirements

Method used

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  • Method for optimizing dummy plate of double-volute type double-suction pump and product produced with same
  • Method for optimizing dummy plate of double-volute type double-suction pump and product produced with same
  • Method for optimizing dummy plate of double-volute type double-suction pump and product produced with same

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 , figure 2 As shown, the double volute type double suction pump includes a volute 1, an impeller 2 is arranged inside the volute 1, and a semi-spiral suction chamber 3 is arranged at the entrance of the impeller 2. The volute 1 includes a volute body 4 and a diffuser pipe 5, along the rotation arc of the volute body 4 and the diffuser section of the diffuser pipe 5, a partition 6 is arranged, and the partition 6 divides the interior of the volute 1 into two flow passages. The water flows into the impeller 2 through the semi-spiral suction chamber 3, and flows into the volute 1 after being driven by the impeller 2 to rotate.

[0024] The purpose of the present invention is to minimize the radial force of the impeller 2 under the premise of maintaining the original hydraulic performance of the double-volute double-suction pump...

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Abstract

The invention relates to a method for optimizing a dummy plate of a double-volute type double-suction pump and a product produced with the same. The method comprises the following steps of: respectively carrying out three-dimensional modeling and grid dividing by selecting the double-volute type double-suction pump formed by a plurality of starting positions and stopping positions of the dummy plate; guiding the divided grid model into ANSYS-CFX software to carry out numerical simulation to obtain a flux-lift and flux-efficiency curve graph of the double-volute type double-suction pump and a single-volute pump and a flux-dependent impeller radial force distribution graph under each starting position and each stopping position; by analyzing the curved graph and the distribution graph, selecting the starting position and the stopping position which correspond to the curve representing the minimum impeller radial force as the starting position and the stopping position of the dummy plate of the double-volute type double-suction pump correspondingly, wherein the curve representing the minimum impeller radial force is one curve of all flux-lift and flux-efficiency curves of the double-volute type double-suction pump, which is very similar to a flux-lift and flux-efficiency curve of the single-volute pump; and adopting arc transition between the starting position and the stopping position, wherein the curvilinear equation for the arc transition is a log spiral equation, thus the optimization is finished.

Description

technical field [0001] The invention relates to a method for optimizing a pump and its products, in particular to a method for optimizing a diaphragm of a double-volute double-suction pump and a product produced by the method. Background technique [0002] As a new type of pump, the double-volute double-suction pump not only inherits the advantages of the single-volute double-suction pump, such as high lift, large flow, and balanced axial force, but also can effectively reduce the pump’s operating time in theory. The generated radial force of the impeller improves the vibration of the pumping station system. [0003] At present, whether it is the real machine or model test in the laboratory, or the CFD numerical simulation method, most of them are still in the analysis of the hydraulic performance, pressure fluctuation and radial force of a given double volute pump, and there is no analysis of The main part of the transformation from a single volute to a double volute - the...

Claims

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Application Information

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IPC IPC(8): F04D29/42
Inventor 肖若富吕腾飞王福军
Owner CHINA AGRI UNIV
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