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Wind turbine blades

一种风轮机叶片、拉挤成型的技术，应用在制造这样的叶片,制造风轮机叶片领域，能够解决弱化条带18结合等问题

Active Publication Date: 2016-08-10
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, the amount of interstitial space, and thus the resin flow rate, varies across the strips 18, which can cause air to become trapped between the strips 18, thereby weakening the bond between the strips 18.

Method used

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  • Wind turbine blades
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Examples

Experimental program
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Effect test

Embodiment Construction

[0044] Figure 4a and Figure 4b A strip 100 for an elongated reinforcing structure for a wind turbine blade is shown. In the described embodiment, the elongated reinforcing structure is related to figure 1 Similar to the spar caps described above.

[0045] Strip 100 is a pultruded strip 102 of fiber reinforced polymeric material extending longitudinally between opposite ends 104 . Pultruded strip 102 includes sides 103 and upper and lower surfaces 106 , 108 . Each of the upper surface 106 and the lower surface 108 is provided with a perfusion promoting layer 110 bonded to the respective upper surface 106 and lower surface 108 .

[0046] The infusion promoting layer 110 covers the entire upper surface 106 and lower surface 108 of the pultruded strip 102 . In particular, the perfusion promoting layer 108 extends continuously in the longitudinal direction between the ends 104 of the strip 102 and between the sides 103 of the strip 110 in the transverse direction.

[0047] ...

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PUM

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Abstract

A pultrusion process for making a strip for an elongate reinforcing structure of a wind turbine blade, the process comprising: drawing fibres (42) and resin through a pultrusion die (40) in a process direction to form a strip (102); and applying an infusion-promoting layer (110) to a surface of the strip down-stream from the die in the process direction. A pultrusion apparatus is also disclosed.

Description

technical field [0001] The present invention relates generally to rotor blades for wind turbines, and to methods of manufacturing wind turbine blades. More particularly, the present invention relates to wind turbine blades comprising a stack of load-bearing reinforcing strips integrated into the structure of the shell, and to methods of manufacturing such blades. Background technique [0002] figure 1 is a cross-sectional view of a wind turbine rotor blade 10 . The blade has a shell 11 manufactured from two half-shells, a windward shell 11a and a leeward shell 11b. The shell is molded from glass fiber reinforced plastic (GRP). Part of the shell 11 is of sandwich panel construction and comprises a lightweight foam (eg polyurethane) core 12 sandwiched between an inner GRP layer or “skin” 13 and an outer GRP layer or “skin” 14 . [0003] The blade 10 comprises a first pair of spar caps 15a and 15b and a second pair of spar caps 16a and 16b. Each pair of spar caps 15 a and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54B29C69/00F03D1/06B29D99/00B29C70/86
CPCB29C70/525B29C70/865B29D99/0028B29C69/007B29C70/547F05B2230/23F05B2280/6003F05B2280/6015Y02E10/72F03D1/0675B29C70/083B29C70/20B29C70/528B29K2105/0881B29K2105/106B29K2309/08B29K2313/00B29L2031/085
Inventor J·史密斯
Owner VESTAS WIND SYST AS