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Fiber bragg grating sensor for monitoring wind power blade

A fiber grating and wind power blade technology, which is applied in the direction of using optical devices to transmit sensing components, wind energy power generation, and optical devices, etc., can solve the problems of inability to real-time monitoring, difficult operation, high cost, etc. Long, advanced design effects

Pending Publication Date: 2020-10-27
中科国通检测认证(天津)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most wind turbine blades work in harsh environments such as high-altitude mountainous areas, coastal areas, or seas. Conventional inspection and monitoring methods such as manual and unmanned aerial vehicles are difficult to operate, high in cost, and unable to monitor in real time. The market urgently needs efficient, economical and safe monitoring sensors to ensure the normal operation of the unit and reduce economic losses.

Method used

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  • Fiber bragg grating sensor for monitoring wind power blade
  • Fiber bragg grating sensor for monitoring wind power blade
  • Fiber bragg grating sensor for monitoring wind power blade

Examples

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Such as Figure 1-Figure 3 As shown, this embodiment provides a fiber grating sensor 2 for wind turbine blade monitoring, including optical fiber 1 , Bragg grating 3 , glass fiber cloth 5 , and surface felt 4 . The glass fiber cloth 5 is used as the sensor substrate, which ensures that the sensor has the same service life as the measured object. The optical fiber 1 is laid in the center along the length of the substrate, and a Bragg grating 3 is etched at the middle position of the optical fiber laying le...

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Abstract

The invention discloses a fiber bragg grating sensor for monitoring a wind power blade. The sensor comprises an optical fiber, a Bragg grating, glass fiber cloth and a surfacing mat; the glass fiber cloth is a sensor base body; the optical fiber is laid in the middle in the length direction of the sensor base body; the Bragg grating is etched in the middle of the laying length of the optical fiber; a protective layer is laid on the optical fiber through the surfacing mat for the wind turbine blade; and the optical fiber, the glass fiber cloth and the surfacing mat are vacuumized, poured and formed into the fiber bragg grating sensor. The sensor is advanced in design, easy and convenient to install, long in service life, good in linearity, free of metal parts, capable of achieving lightningprotection, low in cost compared with other forms of monitoring sensors for the wind turbine blade and is high in application expansibility.

Description

technical field [0001] The invention belongs to the technical field of wind power blade operation state monitoring, relates to a sensor developed for wind power blade material, structure and operating environment, and particularly relates to a fiber grating sensor for wind power blade monitoring. Background technique [0002] According to industry statistics, in 2019, the new grid-connected wind power installed capacity reached 25.74 million kilowatts, and the cumulative grid-connected installed capacity reached 210.05 million kilowatts. Wind power installed capacity accounted for 10.4% of the total power generation installed capacity. China currently has more than 100,000 grid-connected wind turbines. Wind blades are the key components for energy conversion of wind turbines. The cost accounts for about 20% of the total cost of the turbine, but the failure rate is relatively high. According to the statistics of energy companies, downtime accidents caused by blade damage and ...

Claims

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Application Information

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IPC IPC(8): G01D5/353G01K11/32G01B11/16G01L1/24F03D1/06F03D17/00
CPCF03D1/0675F03D17/00G01B11/165G01D5/353G01K11/3206G01L1/246Y02E10/72
Inventor 邢晓坡黄司晨
Owner 中科国通检测认证(天津)有限公司
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