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Monitoring blade bearing

A bearing and blade technology, applied in the field of blade pitch bearing, can solve the problems of pitch error, inaccurate blade bearing, non-optimal maintenance work plan, etc., and achieve the effect of precise or accurate condition monitoring or diagnosis

Inactive Publication Date: 2019-07-19
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Also, routine checking of blade pitch errors is already part of the monitoring, but is either highly imprecise and / or a very late indicator of blade bearing damage, leading to sub-optimal maintenance work schedules
In particular, if the bearings experience extremely high frictional torque increases due to progressive damage, correct blade pitching may not be possible, resulting in pitch errors

Method used

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Embodiment Construction

[0045] exist figure 1 The wind turbine 1 shown schematically in the figure comprises a wind turbine tower 3, a nacelle 5 mounted on top of the wind turbine tower, the nacelle 5 housing a generator 7 with a rotating shaft 9 coupled to a wind turbine installed there Hub 11 of a plurality of rotor blades 13 . At least one rotor blade 13 of the wind turbine 1 comprises a rotor blade bearing 17 according to an embodiment of the invention enabling rotation of the airfoil 14 of the rotor blade 13 about the longitudinal axis 15 relative to the hub 11 .

[0046] figure 2 Schematically shown (in a side view along the longitudinal axis 15 of the rotor blade) is a blade bearing 17 according to an embodiment of the invention, which may for example be included in a wind turbine 1 in order to align the airfoil of the rotor blade 13 14 is rotatably connected to hub 11 allowing pitching of airfoil 14 of rotor blade 13 about its longitudinal axis 15 . The rotor blade bearing 17 comprises an...

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Abstract

It is described a method of monitoring a blade pitch bearing (17) of a rotor blade (13) of a wind turbine (1), the method comprising: pitching the rotor blade (13); measuring an amount of a vibration(37, 45) of the blade pitch bearing (17) during the pitching; estimating a condition of the blade pitch bearing (17) based on the measured amount of vibration (37, 45).

Description

technical field [0001] The invention relates to a method and an arrangement for monitoring a blade pitch bearing of a rotor blade of a wind turbine, to a rotor blade bearing for a rotor blade, to a rotor blade with a rotor blade bearing, and further to A wind turbine. Background technique [0002] A wind turbine may include a wind turbine tower, a nacelle mounted on top of the wind turbine tower, the nacelle including a generator driven by a rotating rotor shaft where a plurality of rotor blades are mounted. [0003] In order to properly adjust the rotor blades with respect to the wind, the rotor blades comprise a pitch system which makes it possible to rotate the rotor blades about the longitudinal axis in order to set the proper pitch angle. Accordingly, the rotor blade comprises a blade pitch bearing which rotatably supports the airfoil of the rotor blade relative to a part of the blade pitch bearing connected to the hub of the wind turbine. During prolonged operation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF03D17/00F03D7/0224F05B2270/328F05B2260/80F05B2270/807F05B2270/334F05B2260/79F16C2233/00F16C19/527Y02E10/72F03D80/70G01M13/045F05D2270/334
Inventor S.F.埃尔莫斯T.K.默勒
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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