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Bearing arrangement of wind turbine

A technology for wind turbines and bearing devices, applied in wind turbines, ball bearings, shafts and bearings, etc., can solve problems such as time-consuming, expensive, and increasing the risk of pre-major bearing failures

Pending Publication Date: 2021-12-17
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is very time consuming and expensive, and may also increase the risk of introducing contamination into the bearing, and thus, of pre-major bearing failure due to hard particle indentation

Method used

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  • Bearing arrangement of wind turbine
  • Bearing arrangement of wind turbine
  • Bearing arrangement of wind turbine

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] figure 1 A wind turbine 1 is shown comprising a tower 2 and a nacelle 3 attached to the top of the tower 2 . The nacelle comprises a generator 4 connected to a hub 5 to which respective rotor blades 6 are attached. In operation, a rotor 7 comprising a hub 5 and rotor blades 6 rotates and drives a rotor 8 of a generator 4 , as is known. The rotating arrangement or corresponding rotor 8 is attached to a bearing 9, eg a main bearing in a direct drive wind turbine.

[0035] Another rotating part is each rotor blade 6, which is rotatable relative to the hub for varying the pitch. Furthermore, each rotor blade 6 is attached to a bearing 10 allowing this rotation.

[0036] figure 1 Just a simple schematic diagram showing that at the wind turbine 1 there are several large bearings 9, 10 which support the respective large arrangement and which may be part of the bearing arrangement of the invention disclosed in detail below. Bearings 9, 10 are shown for illustrative purpose...

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PUM

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Abstract

The invention relates to a bearing arrangement of a wind turbine. A bearing arrangement of a wind turbine (1), comprising: a bearing (9, 10) having an outer ring (12) and an inner ring (13) and a lubricating fluid provided between the two rings (12, 13); and at least one sealing device (18) arranged at each side of the bearings (9, 10) for sealing a gap (17) between the outer ring (12) and the inner ring (13), whereby each sealing device (18) is fixed to one ring (12, 13) and contacts the other ring (12, 13) with a flexible lip-shaped sealing element (20), in which a pressure device (21) is provided for applying pressure to the outer ring (12) and the inner ring (13) in order to seal the gap (17) between the outer ring (12) and the inner ring (13). The pressure device (21) is used to at least temporarily provide a gas overpressure (33) in the sealed gap (17) in order to increase the contact load of the lip sealing element (20) with the rings (12, 13).

Description

technical field [0001] The invention relates to a bearing arrangement for a wind turbine comprising: a bearing having an outer ring and an inner ring and a lubricating fluid provided between the two rings; and at least one sealing arrangement arranged at each of the bearings At one side, for sealing the gap between the outer and inner rings, whereby each seal is fixed to one ring and contacts the other ring with a flexible lip-like sealing element. Background technique [0002] As is known, a wind turbine comprises a tower and a nacelle fixed to the top of the tower. A hub is arranged at the nacelle, to which several rotor blades are attached. As is known, the hub rotates as the turbine blades interact with the incoming wind and drive a generator to generate electricity. Such a wind turbine comprises several rotating elements which are arranged in respective bearings. One example is the main bearing of the generator at a direct drive wind turbine, another example is the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/70
CPCF03D80/70F16C19/06F16C33/766F16C33/7876F16C33/7889F16C2360/31F16C33/7856F16C33/726F16J15/164F16J15/3212Y02E10/72F05B2240/50F05B2260/98
Inventor M·M·汉森T·K·莫勒
Owner SIEMENS GAMESA RENEWABLE ENERGY AS