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A hydraulic optimization method and device for a double-suction centrifugal pump impeller

A centrifugal pump impeller and hydraulic optimization technology, which is applied to components, pumps, pump components, etc. of pumping devices used for elastic fluids, can solve the problems that the influence mechanism of the hydraulic performance of double-suction centrifugal pumps is difficult to be clarified, and the optimization effect is limited.

Active Publication Date: 2017-11-17
CHINA AGRI UNIV
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Problems solved by technology

In addition, the influence mechanism of geometric parameters on the hydraulic performance of double-suction centrifugal pumps is difficult to clarify, which limits the optimization effect of this technology

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  • A hydraulic optimization method and device for a double-suction centrifugal pump impeller
  • A hydraulic optimization method and device for a double-suction centrifugal pump impeller
  • A hydraulic optimization method and device for a double-suction centrifugal pump impeller

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Embodiment Construction

[0024] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and not to limit the present invention.

[0025] In the centrifugal pump hydraulic optimization design technology based on the optimization algorithm that is closest to the present invention, the shape of the impeller is parameterized by geometric parameters, and the number of geometric parameters describing the three-dimensional shape of the impeller is huge, which makes the calculation amount of this optimization design technology huge . Therefore, in practical applications, only a few geometric parameters are often considered, and many other geometric parameters remain unchanged. In addition, the influence mechanism of geometric parameters on the hydraulic performance of double-suction centrifugal pumps is diff...

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Abstract

The invention discloses a hydraulic optimization method and device for a double-suction centrifugal pump impeller. Wherein, the method includes: establishing a sample space of the design parameters of the impeller, the sample space including multiple sets of design parameter values; calculating the corresponding impeller axial surface streamline according to each set of design parameter values ​​in the sample space The blade circulation gradient; according to each set of blade circulation gradients, the functional relationship between all design parameters and at least one hydraulic performance parameter is obtained; and the functional relationship is calculated by using a multi-objective genetic algorithm or an adaptive simulated annealing algorithm The global optimization calculation is carried out to obtain the optimized hydraulic model of the double-suction centrifugal pump impeller. The invention uses the blade circulation gradient to parameterize the shape of the impeller. Compared with the geometric parameters, the blade circulation gradient has a more direct impact on the hydraulic performance of the impeller, and it is easy to establish a functional relationship between the design parameters and the hydraulic performance parameters, significantly reducing Minimize the calculation cost of optimization, realize multi-objective automatic optimization design, and improve the optimization design effect.

Description

Technical field [0001] The invention relates to the field of hydraulic optimization design of a double-suction centrifugal pump, and in particular to a hydraulic optimization method and device for a double-suction centrifugal pump impeller. Background technique [0002] The hydraulic optimization design of the existing double-suction centrifugal pump impeller is mainly based on CFD (computational fluid dynamics) technology. The performance of the pump is predicted by using CFD technology, and the design of the double-suction centrifugal pump impeller is improved based on the predicted results. Strictly speaking, the above hydraulic optimization design process is a trial calculation and improvement process, not a mathematical optimization process in the strict sense. The optimization effect depends on the correct analysis of the calculated flow field, and it also requires certain experience. judgment. [0003] At present, the existing technology closest to the present invention is ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22G06F17/50
Inventor 杨魏肖若富姚志峰
Owner CHINA AGRI UNIV