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Wind turbine

A technology of wind turbines and hubs, which is applied to wind engines, control of wind engines, and wind engines that are consistent with the wind direction, and can solve problems such as expensive rolling bearings

Inactive Publication Date: 2018-06-05
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the diameter of the blade at the blade root through which the blade is mounted on the hub, such rolling bearings are very expensive components
When such rolling bearings need to be replaced due to bearing failure, the entire bearing needs to be replaced, which is a very complicated and expensive process

Method used

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Examples

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Embodiment Construction

[0025] figure 1 A schematic view of an inventive wind turbine 1 is shown, from which only a hub 2 and one rotor blade 3 fastened to the hub 2 are shown.

[0026] The rotor blade 3 comprises a blade section 4 which tapers conically to its free end. The tapered blade section 4 extends to the hub 2 or is inserted into the hub 2 . By means of a suitable actuating mechanism, such as an electronic drive motor for pitching the blade, the blade section can be rotated about its longitudinal axis 5 . To achieve such a rotation, a pitch bearing arrangement 6 comprising a first rolling bearing 7 and a second rolling bearing 8 is provided. Since this is only a schematic view, all components are only shown schematically.

[0027] In this embodiment, the hub 2 comprises a central hub part 15 to which the respective hub segments 9 extending in the respective directions of the respective rotation axes 5 are fixed. The blade 5 extends with its blade section 4 into the hub section 9 and as ...

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PUM

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Abstract

The invention relates to a wind turbine comprising a rotor with a hub and several rotor blades arranged at the hub with the rotor blades being rotatable around an axis relative to the hub by means ofa pitch bearing arrangement, whereby each rotor blade (3) extends into the hub (2) with a blade section (4), with the pitch bearing arrangement (6) comprising a first and a second rolling bearing (7,8) being spaced apart from each other in the direction of the axis (5) and arranged between the blade sections (4) and the hub (2).

Description

technical field [0001] The invention relates to a wind turbine comprising a rotor having a hub and a plurality of rotor blades arranged at the hub, the rotor blades being rotatable about an axis relative to the hub by means of a pitch bearing arrangement. Background technique [0002] Wind turbines are used to generate electricity. The generator is driven by a rotor including a hub and a plurality of rotor blades arranged at the hub. To improve efficiency, the orientation or position of the rotor blades relative to the hub can be changed by rotating the rotor blades about the axis using suitable actuators. As the rotor blades are rotated, the orientation of the rotor blades relative to the wind direction may be changed. [0003] In order to realize the pitch change of the blades, each blade is arranged at the hub through a corresponding bearing device. Such bearing arrangements generally comprise rolling bearings. Due to the diameter of the blade at the blade root throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D80/70F03D7/04
CPCF03D1/0658F03D1/0691F03D7/0224F03D80/70F05B2240/54F05B2250/292F05B2260/79Y02E10/72F03D1/0675
Inventor S.F.埃尔默塞
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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