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Wind turbine blade with elongated fastening members in the root region thereof

一种风力涡轮、紧固部件的技术，应用在在其根部区域中具有伸长紧固部件的风力涡轮叶片领域，能够解决未解决等问题

Active Publication Date: 2014-04-23
LM WP PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this document does not address the question of how to design the root region to withstand the extreme loads in the connection between the blade root and the hub

Method used

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  • Wind turbine blade with elongated fastening members in the root region thereof
  • Wind turbine blade with elongated fastening members in the root region thereof
  • Wind turbine blade with elongated fastening members in the root region thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] figure 1 A traditional modern upwind turbine 24 according to the so-called "Danish concept" is shown with a tower 36, a nacelle 25 and a rotor with a substantially horizontal rotor shaft. The rotor comprises a hub 23 and three blades 2 extending radially from the hub 23 , each blade having a blade root 31 closest to the hub and a blade tip 32 furthest from the hub 23 .

[0052] as from figure 2 As clearly seen in , the blade 2 comprises a root region 26 having a root end face 29 closest to the hub, an airfoil region 27 furthest from the hub, and a transition region between the root region 26 and the airfoil region 27 28. The airfoil region 27 has an ideal or almost ideal blade shape, while the root region 26 has a substantially circular cross-section, which reduces storm loads and makes mounting the blade 2 on the hub 23 easier and safer. Preferably, the diameter of the blade root 31 is constant along the entire root region 26 . The transition region 28 has a shape...

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PUM

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Abstract

A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. Each fastening member 7 is provided with a notch 60' in the periphery 11 thereof. A rod-shaped locking element 61 passes through the notch 60' in engagement therewith. The locking element 61 is fixedly and tightly fitting arranged in a through-going circular bore 65 extending through the wall of the root region.

Description

technical field [0001] A wind turbine blade for a wind turbine rotor, the wind turbine blade comprising a hub from which the wind turbine blade extends when the wind turbine blade is mounted to the hub, the wind turbine blade comprising a shell structure made of fiber reinforced composite material, A fiber reinforced composite material comprising fibers embedded in a polymer matrix, a wind turbine blade extending in a longitudinal direction and having a profiled profile comprising a pressure side and a suction side and a leading edge and a trailing edge, said edges defining a chord plane between them, When viewed in the longitudinal direction, the profile profile comprises a root region with a root end face, an airfoil region, and optionally a transition region between the root region and the airfoil region, [0002] The root region has an annular cross-section with an outer surface and an inner surface, the root region comprises a plurality of elongate fastening members provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/86F01D5/28F03D1/06
CPCB21K3/04F05B2280/6003F03D1/0658F05B2260/301Y02E10/721Y02E10/72F03D13/10Y10T29/49336Y10T29/49337Y10T29/49963B21D53/78
Inventor M.达尔
Owner LM WP PATENT HLDG
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