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Optimization method and system for anti-disturbance of detuned impeller

An optimization method and anti-disturbance technology, applied in the direction of design optimization/simulation, etc., can solve problems such as the inability to give design guidance methods, and achieve the effect of reducing degrees of freedom and solving optimization.

Active Publication Date: 2020-11-06
上海墨向机械科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although this optimization method in the prior art can obtain a certain anti-disturbance optimization for the existing detuned impeller, it cannot give a specific design guidance method

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  • Optimization method and system for anti-disturbance of detuned impeller
  • Optimization method and system for anti-disturbance of detuned impeller
  • Optimization method and system for anti-disturbance of detuned impeller

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Embodiment Construction

[0079] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0080] like figure 1 As shown, the present invention provides a method for optimizing the anti-disturbance of detuned impellers, including:

[0081]1. Finite element model construction steps: identify the detuning characteristics of the impeller, and construct the corresponding finite element model.

[0082] 2. Model reduction step: reduce the constructed finite element model to the degrees of freedom of the number of blades or multiples of the number of blades of the impeller.

[0083] For a tuned im...

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Abstract

The invention provides an optimization method and system for detuning impeller disturbance resistance, and the method comprises the steps: carrying out the detuning characteristic recognition of an impeller, and building a corresponding finite element model; The built finite element model is reduced to the blade number freedom degree or the blade number multiple freedom degree of the impeller; Establishing an optimization model for the reduced model, wherein the objective function is the maximum vibration amplitude of all nodes in a specified frequency range of all sectors of the impeller; andcarrying out sensitivity analysis on the objective function so as to optimize the objective function. According to the method, the degree of freedom of the model is greatly reduced, and only the number N of blades or multiple degrees of freedom of the blades are needed to be optimized, so that the problem that the detuned impeller is difficult to optimize is solved.

Description

technical field [0001] The invention relates to the field of impeller optimization design, in particular to an optimization method and system for anti-disturbance of detuned impellers. Background technique [0002] The impeller is a very important mechanism on various types of equipment. The quality of its dynamic characteristics directly affects the safe and stable operation of the equipment. During the high-speed rotation of the blades on the impeller, due to the difference in the smile produced by itself and the external environment and other factors, it will Slight changes in the characteristics of the blade (that is, detuning) may cause the blade to generate large forced vibrations, and the stress will also increase significantly. The increased stress may lead to the destruction of structural strength and accelerate the aging and damage of equipment. Accidents induced by such detuning often appear in equipment accidents. [0003] At present, intelligent optimization al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
Inventor 毕庆贞尚海
Owner 上海墨向机械科技有限公司