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Multi-working-condition optimization design method for spokes of axial flow pump

An optimized design, multi-working condition technology, applied in design optimization/simulation, calculation, calculation model, etc., can solve the problems of long consumption calculation cycle, difficult to give the optimal parameter combination of spokes, low efficiency, etc., to shorten the optimization cycle , the overall hydraulic performance is improved, the effect of improving the optimization efficiency

Active Publication Date: 2020-04-07
HOHAI UNIV
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Problems solved by technology

However, most of the current design methods for spoke parameters are qualitative analysis methods based on experience. This method has no scientific theory and mathematical models as support, consumes a long calculation cycle and is inefficient; at the same time, this design method can only For single working condition operation, it is difficult to give the optimal parameter combination of spokes that is generally applicable to multiple working conditions

Method used

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  • Multi-working-condition optimization design method for spokes of axial flow pump
  • Multi-working-condition optimization design method for spokes of axial flow pump
  • Multi-working-condition optimization design method for spokes of axial flow pump

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0030] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a multi-working-condition optimization design method for spokes of an axial flow pump, which comprises the following steps: determining initial conditions of spoke multi-working-condition optimization design, including design parameters and typical operation working conditions; reasonably arranging a test scheme based on orthogonal test design, and performing numerical calculation on the test scheme for each typical working condition to obtain a lift value of each sample point; establishing a function relationship between spoke parameters and lift by adopting a multivariate quadratic regression model; converting a multi-objective optimization problem into a comprehensive objective function through a comprehensive objective method, obtaining a spoke optimal parametercombination suitable for multi-working-condition operatio in the mode of combining a linear weighting method and a particle swarm algorithm, and verifying and analyzing the improvement effect of thespoke optimal parameter combination. The method can effectively inhibit the formation of a saddle area under a stall condition while ensuring that the external characteristics of the axial flow pump are not affected under a rated condition, and is beneficial to improving the overall hydraulic performance of the axial flow pump.

Description

technical field [0001] The invention relates to the field of hydraulic optimization of axial flow pumps, in particular to a method for optimal design of spokes of axial flow pumps in multiple working conditions. Background technique [0002] Axial flow pumps have the characteristics of large flow, low lift, and small water loss. In recent years, they have been widely used in low-lift pumping station projects, and have played an important role in improving the ability to resist natural disasters and promoting the development and utilization of water resources. effect. In general, the axial flow pump has high hydraulic performance near the optimal working point, but it is prone to rotating stall under the small flow condition. When the pump is running under the stall condition, the internal flow of the pump is disordered, and the efficiency drops sharply. The stable "saddle area" seriously affects the safe and stable operation of the unit. Therefore, research on how to impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06N3/00
CPCG06N3/006
Inventor 李京鸿张睿徐辉
Owner HOHAI UNIV
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