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Wind turbine blade load sensor

A load sensor, wind turbine technology, applied in wind turbines, force sensors in the holes of stressed structures, control of wind turbines, etc. Effect

Inactive Publication Date: 2013-11-20
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sensors set up in this way can still be damaged during maintenance of the wind turbine
Also, precise sensor placement is difficult to achieve, and this imprecision can lead to incorrect data being collected

Method used

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  • Wind turbine blade load sensor
  • Wind turbine blade load sensor
  • Wind turbine blade load sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A part of the rotor blade 5 connected to the hub 10 is shown. The rotor blade 5 is usually made of composite material which does not have suitable properties to form internally threaded holes therein to receive fastening means such as bolts 15 . In order to overcome this lack of structural integrity, it is known to provide an insert 20 in the root portion of the rotor blade 5 . Conventional inserts 20 are typically made of metal such as steel, although other materials of suitable stiffness and machinability may be used.

[0024] In this embodiment, holes 25 are formed in the modified insert 20' A portion 30 of the bore 25 is internally threaded so as to form a threaded portion to cooperate with a corresponding threaded portion of the bolt 15 .

[0025] A recess 35 is formed in the hole 25 . The recess 35 is provided with a further internally threaded portion 40 so that a sensor 50 can be arranged and fixed therein.

[0026] The sensor 50 comprises a c...

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Abstract

A wind turbine rotor blade root load sensor includes an insert secured within a root portion of a wind turbine rotor blade and including an internal bore. The sensor also includes a carrier member fixedly connected to the internal bore of the insert so that loads can be transmitted therebetween. The sensor further includes a sensing element supported by the carrier member within the internal bore of the insert. The sensing element is positioned to detect loads applied to the wind turbine rotor blade and transferred through the insert and the carrier member.

Description

technical field [0001] The present invention relates to a wind turbine rotor blade root load sensor, in particular a sensor configured to be mounted in the material of the root portion of a wind turbine rotor blade. Background technique [0002] Wind turbine rotor blades are subjected to a considerable level of dynamic loading during operation of the wind turbine installation to which the rotor blade is connected in use. Not only is the rotor blade rotating about the axis of the hub of the wind turbine device such that the load due to the weight of the rotor blade varies constantly, but the wind turbine device is also subjected to significantly varying forces due to the varying wind load exerted on it. [0003] The pitch of the individual blades can be varied as desired, for example to increase the lift generated by the rotor blades under certain wind conditions. There is also a need to control the pitch of the blades to minimize the effects of extreme loads the blades may ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06G01L5/00
CPCF03D1/0658F05B2260/80F05B2270/808G01L5/0004Y02E10/721F03D17/00Y02E10/72F03D80/00F03D1/065F03D7/00G01L5/00G01L1/20G01L1/18
Inventor A·赫奇斯T·弗龙斯基
Owner VESTAS WIND SYST AS
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