An Optimal Design Method for Centrifugal Pump Impeller

A centrifugal pump impeller, optimization design technology, applied in design optimization/simulation, computer-aided design, components of pumping devices for elastic fluids, etc., to achieve good operating efficiency and operating stability, accurate optimization, and high efficiency. Effect

Active Publication Date: 2021-01-05
ZHEJIANG SCI-TECH UNIV
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  • Application Information

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Problems solved by technology

On July 20, 2011, the invention patent with the Chinese patent application number 201110202524.5 disclosed "an optimization design method for an anti-cavitation centrifugal pump impeller". By constructing optimization parameters and using NSGA-II genetic algorithm as an optimization tool, a An impeller optimization design method to improve cavitation and cavitation performance, which does not take into account factors that affect the stability of the impeller operation

Method used

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  • An Optimal Design Method for Centrifugal Pump Impeller
  • An Optimal Design Method for Centrifugal Pump Impeller
  • An Optimal Design Method for Centrifugal Pump Impeller

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Experimental program
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Effect test

Embodiment

[0092] Embodiment: According to experience, a set of basic design parameters of centrifugal pump impellers are given as initial design parameters, and other parameters are used as constant values. The initial design parameters are shown in Table 1.

[0093] Table 1

[0094]

[0095] According to the initial design parameters, carry out the specific implementation operation according to the following steps.

[0096] 1. Utilize the three-dimensional modeling software SolidWorks and the parameter of table 1 to set up the concrete three-dimensional model of impeller, as figure 2 shown;

[0097] 2. Divide the model into grids, the total number of grid nodes is 2556414, and the grid distribution is as follows Figure 4 (optimum design parameters). And given the boundary conditions shown in Table 2 for numerical simulation calculation;

[0098] Table 2

[0099]

[0100] In this step, grid verification is required, that is, whether the head and efficiency obtained by compa...

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Abstract

The invention relates to the field of hydraulic optimization of a centrifugal pump, and discloses an optimal design method of a centrifugal pump impeller. According to the optimal design method, the optimal working point of the centrifugal pump impeller can be determined more accurately and quickly under the common constraints of vortex structure and entropy production, corresponding impeller design parameters are obtained, so that hydraulic performance and stability of the impeller are better. According to the technical scheme, the optimal design method of the centrifugal pump impeller is characterized in that the optimal design method of the centrifugal pump impeller comprises the following steps that(1) a set of parameters that need to be optimized are specifically determined accordingto the design requirements and based on design experience; (2) modeling and mesh generation are conducted; (3) CFX simulation verification is conducted; (4) vortex core structure is extracted; (5) entropy production is analyzed; (6) efficient point matching is conducted; and (7) design parameters of the impeller are optimized by using simulated annealing optimization algorithm.

Description

technical field [0001] The invention relates to the field of centrifugal pump hydraulic optimization, in particular to an optimal design method of a centrifugal pump impeller. Background technique [0002] At present, the centrifugal pump is the most widely used pump type in the pump industry, and its usage accounts for about 70% of the entire pump industry. The viscous effect of the fluid in the centrifugal pump and the special geometric structure of the centrifugal pump determine that the actual flow inside the centrifugal pump is three-dimensional, viscous, and unsteady. Various unstable flows are formed, mainly including: off-flow, backflow, secondary flow, wake flow, and various eddy currents, etc. These unsteady factors co-exist and play a significant role, making the flow field inside the centrifugal pump present Strong, complex unsteady flow characteristics. At the design point, although the centrifugal pump maintains a high operating efficiency, the existence of u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22G06F30/17G06F30/23G06F30/28G06F111/04G06F111/10G06F113/08G06F119/14
CPCF04D29/2244
Inventor 李晓俊刘遥遥郇钰莹蔡云辉陈波
Owner ZHEJIANG SCI-TECH UNIV
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