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Method and device for calculating strength of blade locking device of wind generating set

A technology for wind turbines and locking devices, which is applied in the directions of calculation, computer-aided design, electrical digital data processing, etc., can solve the problems of inaccurate calculation results of the strength of the blade locking device, etc., so that the force of the blade locking device is real and the accuracy is improved. Effect

Active Publication Date: 2019-09-13
XUCHANG XUJI WIND POWER TECH +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for calculating the strength of the blade locking device of a wind power generating set, so as to solve the problem that the current calculation result of the blade locking device strength is not accurate enough

Method used

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  • Method and device for calculating strength of blade locking device of wind generating set
  • Method and device for calculating strength of blade locking device of wind generating set

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Embodiment Construction

[0035] Example of calculation method for strength of blade locking device of wind power generating set:

[0036] Calculation method of the present invention adopts ANSYS (finite element analysis software) as implementation tool, and this example is specified with the calculation method of the strength of certain fan blade locking device, and this calculation method comprises the following steps:

[0037] 1. Establish a geometric model including the load transfer path of the blade locking device.

[0038] In this embodiment, a geometric model of blade 1, blade locking device 2, pitch bearing 3, wheel hub 4, pitch motor 5, blade locking device and hub connection bolt 9, and blade bolt 10 is established in the three-dimensional software, as shown in FIG. figure 1 , 2 As shown, remove small features such as chamfers, bolt holes, bosses, etc. that do not affect stiffness.

[0039] 2. Import the model into the finite element software for grid division, and at the same time apply t...

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Abstract

The invention relates to a method and device for calculating strength of a blade locking device of a wind generating set, and belongs to the technical field of wind power generation. The method comprises the following steps: 1) establishing a geometric model comprising a blade, a blade locking device, a variable-pitch bearing, a hub, a blade locking device and hub connecting bolt, a variable-pitchmotor and a blade bolt; 2) importing the geometric model into finite element software, carrying out grid division and applying corresponding material attributes; 3) setting a contact relationship andboundary conditions of the component; and 4) applying a limit working condition load to the finite element model, and calculating the stress of the blade locking device under the limit working condition. The method establishes a complete finite element model of the blade locking device, so that the stress transmission path of the blade locking device is relatively comprehensive, and the strengthcalculation accuracy of the blade locking device is improved.

Description

technical field [0001] The invention relates to a method and a device for calculating the strength of a blade locking device of a wind power generating set, and belongs to the technical field of wind power generation. Background technique [0002] Wind turbines are generally installed in areas with harsh environments and complex climates. There are many hidden dangers during operation, and regular maintenance or overhaul is required to detect faults and hidden dangers in time and improve the efficiency of wind turbines. The blade locking device is a separate part. When the personnel need to work on the blade, its bolts are connected to the hub to fix the blade to prevent it from accidentally rotating and ensure the safety of personnel working. It is very important to analyze the strength of the blade locking device, it should be able to resist gusts of wind during installation or maintenance to ensure the function of the blade locking. [0003] At present, the strength calc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23Y02E10/72
Inventor 董姝言高亚春程林志苏凤宇何海建晁贯良杨扬孟令锐
Owner XUCHANG XUJI WIND POWER TECH
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