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Centrifugal gas compressor impeller disc section shape optimization method

A technology for centrifugal compressors and impeller discs, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as low design efficiency, high design experience requirements for designers, and long design cycles.

Active Publication Date: 2012-02-01
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

In the past, there was no fixed criterion for the cross-sectional shape design of the centrifugal impeller disc, which required a high level of design experience for the designer.
Moreover, impeller strength design often requires a long design cycle, and the design efficiency is low.

Method used

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  • Centrifugal gas compressor impeller disc section shape optimization method
  • Centrifugal gas compressor impeller disc section shape optimization method
  • Centrifugal gas compressor impeller disc section shape optimization method

Examples

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Embodiment Construction

[0043] Taking the cross-sectional design of the impeller of a high-speed centrifugal compressor as an example, the method for optimizing the cross-sectional shape of the impeller of the centrifugal compressor will be described in detail in combination with the accompanying drawings:

[0044] 1. Establishment of impeller solid model

[0045] Firstly, the centrifugal compressor impeller is solidly modeled according to the cross-section model data of the centrifugal compressor impeller disc and the blade data of the centrifugal compressor impeller to be processed ( figure 1 );

[0046] 2. Parameterization of impeller solid model

[0047] Such as figure 2 , the key data reflecting the shape characteristics of the impeller disc section are extracted as parameters to parametrically design the disc. When parametrically designing the disc section of the centrifugal impeller, the hub profile is fitted by cubic Bezier curves, and the hub profile is determined by the blade Determined...

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Abstract

The invention discloses a centrifugal gas compressor impeller disc section shape optimization method. A parametric modeling mode is adopted in the centrifugal impeller disc section shape, the impeller disc section shape is described with fewest design parameters, and the impeller disc section shape is optimized by combining a neural network approximate model and an optimization design method, so that the equivalent stress of the impeller is effectively reduced by over 7.4 percent under the condition of ensuring that the weight of the impeller is not increased, and the work reliability of the impeller is improved. By the design method, the strength design period of the impeller is greatly shortened, the design result is reliable, and the design cost is saved; and the method has high socialbenefit and popularization value.

Description

technical field [0001] The invention belongs to the field of mechanical design and relates to a method for optimizing the cross-sectional shape of a centrifugal compressor impeller disc. Background technique [0002] Centrifugal compressors play a pivotal role in various departments of national economy and national defense construction, and are widely used in aviation, aerospace, energy, transportation, transportation, chemical and metallurgy and other departments. With the development of modern-scale industry, cutting-edge technology and society's increasing calls for environmental protection, high load, large flow, high efficiency, low noise and small volume have become the development direction of centrifugal compressors. The centrifugal impeller is a key component in the compressor. With the development of technology, the design of the centrifugal impeller is developing towards higher speed and lighter weight. However, with the increase of speed and weight reduction, the...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 席光王宏亮
Owner XI AN JIAOTONG UNIV
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