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Partial arc shroud for wind turbine blades

A technology of wind turbines, blades, applied in the field of fluid reaction surfaces, which can solve problems such as noise and drag

Inactive Publication Date: 2010-07-07
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In stationary configuration, full ring arc shrouds require supports which cause drag and noise

Method used

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  • Partial arc shroud for wind turbine blades
  • Partial arc shroud for wind turbine blades
  • Partial arc shroud for wind turbine blades

Examples

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Embodiment Construction

[0015] figure 2 It is a schematic front view of a rotor for the wind turbine 2 shown in Fig. 1 and / or any other wind turbine. For example, figure 2 The blade 20 shown can be used in place of the blade 10 shown in FIG. 1. The blade 10 can also be modified with the arc cover 22.

[0016] Each of the blades 20 is provided with an arcuate arc shroud 22 that partially curves around the tip ring of the blade, thereby causing a gap between adjacent arc shrouds. The partial arc cover 22 extends a finite length in the direction of blade rotation and a finite length away from the direction of blade rotation. However, some or all of the arc shields 22 may also be connected so that there is no gap between adjacent arc shields. Alternatively, a single blade 20 may also be provided with a full-circle arc shroud extending around substantially the entire blade tip ring.

[0017] Each of the illustrated partial ring arc shields 22 is fixed to the tip of the corresponding blade 20 or near it. Ho...

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Abstract

The present invention discloses a partial arc shroud for wind turbine blades, wherein, a wind turbine blade (20) includes an arcuate partial annulus arc shroud (22) fixed on a tip of the blade (20).

Description

Technical field [0001] The subject matter described herein generally relates to a fluid reaction surface having a specific blade structure, and more specifically, to a wind turbine blade having a partial arc shroud. Background technique [0002] Wind turbines are machines that convert the kinetic energy of wind into mechanical energy. If the mechanical energy is used directly by the machine, such as for pumping water or grinding wheat, the wind turbine can be called a windmill. Similarly, if mechanical energy is converted into electricity, then the machine can also be called a wind generator or wind power station. [0003] Wind turbines are generally classified according to the vertical or horizontal axis around which the blades rotate. A so-called horizontal axis wind turbine is shown schematically in Fig. 1 and is available from General Electric Company. The specific "upwind" configuration of this wind turbine 2 includes a tower 4 that supports a nacelle 6 that encloses a driv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D1/06
CPCF05B2240/33F03D3/06Y02E10/72Y02E10/721Y02E10/74F03D1/06F05B2240/307
Inventor K·柯特利
Owner GENERAL ELECTRIC CO
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