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A wind turbine blade and a method of assembling a wind turbine blade and a spar cap connection piece

A technology for wind turbine blades and spar caps, which is applied to engine elements, wind turbines, machines/engines, etc., and can solve problems such as incompatibility of weighted sections

Active Publication Date: 2016-12-07
BLADE DYNAMICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, any problems that might exacerbate incompatibilities between sections

Method used

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  • A wind turbine blade and a method of assembling a wind turbine blade and a spar cap connection piece
  • A wind turbine blade and a method of assembling a wind turbine blade and a spar cap connection piece
  • A wind turbine blade and a method of assembling a wind turbine blade and a spar cap connection piece

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Embodiment Construction

[0042] A wind turbine blade consists of a certain number of segments connected end-to-end. For example, the basic structure of a blade is disclosed in WO 2012 / 004571 and WO 2009 / 034291. The present invention provides a new method of providing a connection between sparcaps of adjacent sections, and the following description will focus on this.

[0043] The first section has a first spar section 10 extending along the length of the section to provide structural integrity of the blade and in particular to resist high bending loads that may occur on the blade. The second section has a similar spar section 11 . Each spar section has a shear web 12 . This runs transversely across the blade section and generally comprises a composite of multiaxial fibers.

[0044] Each spar section is completed by spar caps 14 that run along the top and bottom edges of the shear web. The spar cap 14 is a composite material that generally includes uniaxial fibers running the length of the blade. ...

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PUM

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Abstract

The present invention relates to a wind turbine blade 40 comprising first and second adjacent blade sections arranged end to end along the length of the blade. Each section comprises an aerodynamic fairing and a spar 10,11 extending along the length of the section. Each spar 10,11 comprises a shear web extending across the fairing and a pair of spar caps 14, one at either end of the shear web. Each spar cap 14 in the first section has a different cross-sectional shape and / or material from the respective spar cap 14 in the second section and wherein the spar cap 14 in the first section is joined to the respective spar cap 14 in the second section via a connection piece 20. Each connection piece 20 is a pre-cured component extending along the length of the blade 40 from a first inclined end 24 configured to connect to a first complimentary inclined end of a spar cap 14 of the first blade section and a second inclined end 32 configured to connect to a second complimentary inclined end of a spar cap 14 of the second blade section. The cross-sectional shape and / or material varies along the length of the connection piece 20 so as to be compatible at either end with the adjacent spar cap 14.

Description

technical field [0001] The invention relates to a wind turbine blade, a method for assembling the wind turbine blade, and a spar flange connector. [0002] In particular, the invention relates to wind turbine blades comprising at least two sections joined together, and the manner in which they are joined. Background technique [0003] Given the need for increasingly longer wind turbine blades, it is now known to produce wind turbine blades in a number of segments that can be transported to a location close to the location of the wind turbine to which they are attached. The blade can then be assembled at this location, avoiding the need to transport the full length blade. The use of smaller sections is a further advantage because smaller components can be made in a more controlled process. Furthermore, the ability to join different sections together means that more blade designs can be produced at lower cost. For example, it becomes easier to extend blades to improve perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D3/06F03D80/00
CPCF03D1/06F03D3/06F05B2240/30F03D1/0675F05B2230/60F05B2240/302F05B2250/292F05B2280/6003F05B2280/6013B29C66/1162B29C66/721B29C65/5014B29C65/505B29C65/5071B29C65/5078B29C66/114B29C66/5241B29C66/7212B29C66/72141B29L2031/085Y02E10/74Y02E10/72Y02P70/50B29K2307/04B29K2309/08
Inventor P.T.海登张帆
Owner BLADE DYNAMICS LTD