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On-line detection device and detection method for fan blades based on laser ranging

A technology for wind turbine blades and laser ranging, which is used in optical testing for flaws/defects, etc., and can solve problems such as failure to form test standards for wind turbines

Active Publication Date: 2019-10-18
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as general performance testing is concerned, each wind power company has prepared some testing equipment, but there is no test standard for wind turbines

Method used

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  • On-line detection device and detection method for fan blades based on laser ranging
  • On-line detection device and detection method for fan blades based on laser ranging
  • On-line detection device and detection method for fan blades based on laser ranging

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Embodiment Construction

[0027] The present invention will be further described in detail below with reference to the drawings and embodiments. The following embodiments are for explaining the present invention and the present invention is not limited to the following embodiments.

[0028] As shown in the figure, an online detection device for wind turbine blades based on laser ranging of the present invention includes a three-dimensional laser ranging sensor, a wind speed sensor, and a data processing and control unit. The wind speed sensor and the three-dimensional laser ranging sensor are both fixed in the wind turbine chassis Above, the wind speed sensor and the 3D laser ranging sensor are connected with the data processing and control unit. The data processing and control unit controls the operation of the 3D laser ranging sensor through the wind speed signal of the wind speed sensor, and processes and analyzes the data of the 3D laser ranging sensor. Such as figure 1 As shown, the online detection ...

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Abstract

The invention discloses a laser ranging based fan blade online detection device and method. The laser ranging based fan blade online detection device comprises a three-dimensional laser ranging sensor, an air velocity sensor and a data processing and control unit. The air velocity sensor and the three-dimensional laser ranging sensor are fixed onto a case of a wind turbine and are connected with the data processing and control unit, and the data processing and control unit controls work of the three-dimensional laser ranging sensor through air velocity signal of the air velocity sensor and processes and analyzes data of the three-dimensional laser ranging sensor. The three-dimensional laser ranging sensor is utilized to carry out non-contact detection technique; thus the laser ranging based fan blade online detection device and method is applicable to detecting amplitude of swing of blades of the wind turbine, without modifying the blades, and further is capable of effectively monitoring conditions of the blades to find out faulty in time by statistic analysis on amplitude of swing of the blades.

Description

Technical field [0001] The invention relates to an online detection device and a detection method thereof, in particular to an online detection device and a detection method of a fan blade based on laser ranging. Background technique [0002] As a clean energy source, wind power has been researched and developed vigorously by countries all over the world in recent years. Large-scale wind turbines are located in wide and remote areas, such as offshore and Gobi deserts, grasslands and other remote areas. Due to their harsh natural environment, as well as wind turbine blade composite materials and manufacturing techniques, wind turbine blades are easily damaged. , Affecting power production. [0003] When wind turbines are in operation, composite materials of wind turbine blades will inevitably produce microstructure defects such as fiber fracture and matrix cracking. These defects will aggravate the occurrence and expansion of wind turbine blade structural damage under actual static...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/95
Inventor 朱亮黄陈蓉薛凯飞
Owner NANJING INST OF TECH