Double-channel pump optimization method based on multi-objective genetic algorithm

A technology of multi-objective inheritance and optimization method, which is applied in the field of optimization design of flow channel centrifugal pumps, can solve problems such as short service life, single optimization target, poor operation stability, etc.

Inactive Publication Date: 2014-03-19
JIANGSU UNIV
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Problems solved by technology

However, the hydraulic design of the impeller and volute, the flow-passing parts of the double-channel pump, has been using semi-empirical and semi-theoretical methods, resulting in a series of problems in the performance, safe operation and service life of the designed double-channel pump. Problems: low efficiency (usually only about 40% to 60%), poor operation stability, short service life, severe vibration and noise, etc.
This method has the following disadvantages: 1) The optimization target is single, that is, the head or efficienc

Method used

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  • Double-channel pump optimization method based on multi-objective genetic algorithm
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  • Double-channel pump optimization method based on multi-objective genetic algorithm

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Embodiment Construction

[0025] The present invention will be further explained below according to the drawings and specific embodiments of the specification.

[0026] like figure 1 As shown, a dual-channel pump optimization method based on multi-objective genetic algorithm, the steps include:

[0027] 1) Calculate the specific speed according to the design parameters of the double-channel pump, namely flow Q, head H, speed n and necessary NPSH Calculate the value range of the geometric parameters of the double-channel pump by the speed coefficient method: the centerline wrap angle of the impeller channel range of values The value range of impeller inlet diameter D1 Value range of impeller outlet diameter D2 { D 2 | ( 9.5 ( n s 100 ) ( - ...

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Abstract

The invention discloses a double-channel pump optimization method based on a multi-objective genetic algorithm. Turbulence calculation and an optimization algorithm are combined in the method and through the optimization algorithm, an optimum solution of structure parameters of a double-channel pump is found, so that the method can provide reliable design basis for workers lacking of rich design experiences and the quality of the design is improved. The training sample of an artificial neural network model in an optimization model is obtained through CFD analysis; a large number of temporary pump hydraulic performances generated in the optimization process are obtained through approximation model prediction; and therefore, computational accuracy is guaranteed, optimization-finding process is greatly accelerated, and time is shortened.

Description

technical field [0001] The invention relates to an optimization design technology of a flow-channel centrifugal pump, in particular to an optimization method for a double-channel pump based on a multi-objective genetic algorithm. Background technique [0002] The double-channel pump is a new type of centrifugal pump with a special impeller structure. It has good non-clogging performance and has been widely used in various fields of national production, especially in the field of environmental protection. In recent years, the problem of environmental pollution faced by our country has become increasingly severe. The government attaches great importance to environmental protection and has invested a lot of money in the construction of sewage treatment facilities. As the key equipment of sewage treatment, the dual-channel pump will be promoted and used on a larger scale, and the annual output value is expected to reach about 400 million yuan. However, the hydraulic design of t...

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Application Information

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IPC IPC(8): G06Q10/04G06N3/08G06N3/12
Inventor 赵斌娟王瑜侯多华
Owner JIANGSU UNIV
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