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Main frame strength calculation method of wind generator set

A technology for wind turbines and strength calculation, applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problems of wasting materials, increasing structural size, and bulky main frame design, saving time and cost. Effect

Inactive Publication Date: 2015-06-10
北京博比风电科技有限公司
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AI Technical Summary

Problems solved by technology

In order to meet the strength requirements, the formulas provided by material mechanics, theoretical mechanics and elastic mechanics are generally used for analysis and calculation, but there are many simplified conditions that make the calculation accuracy very low
In order to ensure the safe and reliable operation of the main frame, the method of increasing the safety factor is often adopted, but the result is an increase in the structural size, waste of materials, and sometimes a reduction in structural performance
Some main frames are designed to be very bulky and huge, and the main frame is too heavy to increase the manufacturing cost

Method used

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  • Main frame strength calculation method of wind generator set
  • Main frame strength calculation method of wind generator set
  • Main frame strength calculation method of wind generator set

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Embodiment Construction

[0019] Such as figure 1 As shown, the method for calculating the strength of the main frame of the wind power generating set according to the present invention mainly includes:

[0020] (1) Using the existing finite element software as a platform, implement modeling, taking into account the main shaft 1, main bearing 3, gearbox 7, main frame 2, eccentric bearing 5 and tower 6;

[0021] (2) Secondly, the main shaft 1 and the gearbox 7 are simulated by beam elements; the main bearing 3 and the main shaft 1 are connected by MPC, and the gearbox 7 and the support 6 are also connected by MPC, as image 3 shown;

[0022] (3) Consider the main frame 2, the main bearing 3 and the gearbox support 6 as a whole. The main frame 2 adopts the shell unit; the main bearing 3, the gearbox support 6, the yaw bearing 5 and the tower 6 adopt the solid unit;

[0023] (4) Finally, define the material properties of each component, perform calculations, and obtain deformation and stress cloud diag...

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Abstract

Disclosed is a main frame strength calculation method of a wind generator set. The main frame strength calculation method includes modeling based on existing finite element software as platform, defining material attributes of various parts at last, and calculating to obtain a deformation and stress nephogram. The modeling process mainly includes taking a spindle, a main bearing, a gearbox, a main frame, an eccentric bearing and a tower into consideration and loading by two ways. The main frame strength calculation method has the advantages that strength performance of the main frame can be beneficially and precisely calculated, various working conditions can be calculated, saving time and cost is facilitated, and the main frame strength calculation method is very applicable to wide-range popularization.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method for calculating the strength of a main frame of a wind power generating set. Background technique [0002] The main frame is a key component of the wind turbine, which is responsible for resisting the load from the center of the impeller and transmitting the load to the tower, which puts high demands on the strength of the main frame. In order to meet the strength requirements, the formulas provided by material mechanics, theoretical mechanics and elastic mechanics are generally used for analysis and calculation, but there are many simplified conditions which make the calculation accuracy very low. In order to ensure the safe and reliable operation of the main frame, the method of increasing the safety factor is often adopted, but the result is an increase in the structure size, waste of materials, and sometimes a decrease in structural performance. Some m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 李荣
Owner 北京博比风电科技有限公司
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