Blade spacing angle correction method based on error analysis

A blade spacing and angle correction technology, applied in geometric CAD, design optimization/simulation, special data processing applications, etc., can solve problems such as inability to adapt to application situations, lack of manual correction methods, etc., to achieve a wide range of effects

Active Publication Date: 2021-06-25
HOHAI UNIV CHANGZHOU
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Problems solved by technology

Although the existing methods are efficient and accurate, in some environments that lack corresponding conditions, it is impossible to use these existing methods for angle correction
[0003] At present, there is a lack of an effective manual correction method in the field of axial flow fan blade optimization design, and the correction of the blade pitch angle to the existing axial flow fan model cannot adapt to some specific applications

Method used

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  • Blade spacing angle correction method based on error analysis
  • Blade spacing angle correction method based on error analysis
  • Blade spacing angle correction method based on error analysis

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the technical solutions in the application, the technical solutions in the embodiments of the application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the application, and Not all examples. Based on the embodiments in this application, other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall all fall within the protection scope of this application.

[0022] Below in conjunction with embodiment technical scheme of the present invention is described in further detail:

[0023] In the first step, in the modeling software, use the original model as the test material, set the rotation axis of the original model as the z-axis, and use the XOY plane as the reference plane to enter the sketch drawing, and take the points at the same position of the root of each blade As the starting point, the c...

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Abstract

The invention discloses a blade pitch angle correction method based on error analysis. According to the method, an error uniform distribution method is adopted, and under the condition of a distance angle measured by an original model, an angle to be subjected to error distribution is reasonably selected to perform error uniform distribution, so that a new angle is solved to enable the distance angle of the blade to be close to a satisfied condition. According to the method, the problem that the design spacing angle of the blades of the non-uniformly distributed axial flow fan is difficult to solve at present is solved, the operation method is flexible and diverse, the solving precision is improved, the method is simple and direct, the design time is greatly shortened, the cost is low, and the method is convenient to use by vast fan enterprises.

Description

technical field [0001] The invention relates to a method for correcting the pitch angle of blades based on error analysis, in particular to a method for optimizing the pitch angle of blades of a non-uniform axial flow fan by using error analysis. Background technique [0002] When optimizing the design of axial flow fan blades, the current general correction method for the correction of the spacing angle between the unevenly distributed axial flow fan blades is based on the rotor automatic balance theory, (the mathematical expression of the rotor balance theory Mode In the formula, αm is the angular distance between the m-th blade and the first blade, the first blade is the reference blade, α1=0, z is the number of blades), and then using matlab and other programming software, the existing axial flow The blade pitch angle of the fan model is corrected. Although the existing methods are efficient and accurate, in some environments that lack corresponding conditions, it i...

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Application Information

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IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20Y02E10/72
Inventor 董菁张磊朱其
Owner HOHAI UNIV CHANGZHOU
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