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Roller bearing, wind turbine and control method of wind turbine

A technology for wind turbines and roller bearings, applied in the control of wind turbines, wind turbines, rolling contact bearings, etc., can solve the problems of inaccurate measurement results and not very effective

Pending Publication Date: 2020-10-30
AB SKF +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method is to measure preload / load by friction torque, however, this method is not very effective and the measurement results are not accurate for bearings of this huge size

Method used

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  • Roller bearing, wind turbine and control method of wind turbine
  • Roller bearing, wind turbine and control method of wind turbine
  • Roller bearing, wind turbine and control method of wind turbine

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Embodiment Construction

[0048] The present disclosure relates to a roller bearing, comprising an outer ring 1, an inner ring 2 and at least one row of rollers 3 arranged between the outer ring 1 and the inner ring 2, and the outer ring 1 or the inner ring 2 is provided with an optical fiber cable 6. The fiber optic cable 6 includes at least one Bragg grating. The signal in the fiber optic cable 6 is used to determine the preload or load of the roller bearing. Thus, by means of the fiber optic cable 6 with Bragg gratings, it is possible to determine the preload during the installation of the roller bearing and to determine the load during the operation of the roller bearing in order to determine the load distribution of the roller bearing under external influences, Especially the load distribution in the circumferential direction. Among them, the load distribution under external influence can be calculated by subtracting the preload from the total load.

[0049]A control and storage unit may also be...

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Abstract

The invention discloses a roller bearing. The roller bearing comprises an outer ring, an inner ring and at least one row of rollers arranged between the outer ring and the inner ring, wherein the outer ring or the inner ring is provided with fiber optic cables; and each fiber optic cable comprises at least one Bragg grating, and signals in the fiber optic cables are used for determining the preload or the load of the roller bearing. Therefore, the preload or the load of the roller bearing can be conveniently measured.

Description

technical field [0001] The invention relates to a roller bearing, in particular to a large double-row tapered roller bearing used for a wind turbine ( / wind generator). The invention also relates to a wind turbine and a control method for a wind turbine. Background technique [0002] Wind turbines typically employ preloaded large double row tapered roller bearings, typically having an outer ring with a diameter of at least 1 meter. The size of the bearings involved is significantly larger than bearings with an outer diameter of a few centimeters that are used, for example, in vehicles. For such large bearings, it is important and difficult to determine the preload during installation. In addition, during the operation of roller bearings, large and unknown deformations often occur. For example, bearings that are not supported by a sufficiently rigid structure can deform severely under load, which can be detrimental to performance, so it is equally important to determine the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C41/00F03D80/70G01M13/04
CPCF16C41/00F03D80/70G01M13/04F16C2233/00F16C2360/31F16C19/522F16C2300/14F16C2240/14G01L5/0009F16C33/586F16C33/385G01L1/246Y02E10/72F03D7/0224F16C19/386
Inventor 罗伯特·泽林格郭明春徐权张立超
Owner AB SKF