A method for optimal design of axial flow pump spokes in multiple working conditions

An optimized design and multi-working condition technology, applied in design optimization/simulation, calculation, calculation model, etc., can solve problems such as low efficiency, long consumption calculation cycle, and difficulty in giving the optimal parameter combination of spokes, so as to suppress the saddle area , shorten the optimization cycle, and improve hydraulic performance

Active Publication Date: 2021-07-13
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

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  • A method for optimal design of axial flow pump spokes in multiple working conditions
  • A method for optimal design of axial flow pump spokes in multiple working conditions
  • A method for optimal design of axial flow pump spokes in multiple working conditions

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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 method for the multi-working condition optimization design of the spokes of an axial flow pump, comprising the steps of: determining the initial conditions for the multi-working conditions optimal design of the spokes, including design parameters and typical operating conditions; reasonably arranging tests based on the orthogonal test design program, and numerically calculate the test program for each typical working condition to obtain the head value of each sample point; use the multivariate quadratic regression model to establish the functional relationship between the spoke parameters and the head; use the comprehensive objective method to transform the multi-objective optimization problem into The combination of linear weighting method and particle swarm optimization algorithm is used to obtain the optimal parameter combination of spokes under multi-working conditions, and its improvement effect is verified and analyzed. The invention can effectively suppress the formation of "saddle area" under the stall condition while ensuring that the external characteristics of the axial flow pump are not affected under the rated working 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 Patents(China)
IPC IPC(8): G06F30/27G06N3/00
CPCG06N3/006
Inventor 李京鸿张睿徐辉
Owner HOHAI UNIV
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