Bearing electric corrosion wind driven generator structure defect detection mechanism and bearing electric corrosion wind driven generator structure defect detection method

A technology for wind power generators and structural defects, which is applied in the direction of motor generator testing, etc., to achieve the effect of easy operation and simple measurement structure

CN109239598APending Publication Date: 2019-01-18CSIC ELECTRICAL MACHINERY SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-18

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Abstract

The invention discloses a bearing electric corrosion wind driven generator structure defect detection mechanism and a bearing electric corrosion wind driven generator structure defect detection method, which solve a difficult problem of how to measure a shaft current numerical value of a wind driven generator subjected to bearing electric erosion. An AS end insulating support frame (2) is arrangedon an inner side face of an AS end bearing inner cover (1), an AS end Rogowski detection coil (4) is arranged on the AS end insulating support frame (2), the AS end Rogowski detection coil (4) encircles a rotating shaft of the bearing electric corrosion wind driven generator, the AS end Rogowski detection coil (4) and the AS end insulating support frame (2) are fixed together through being strapped by an AS end insulating strapping tape (3), and the AS end Rogowski detection coil (4) is electrically connected with an oscilloscope (11) through an AS end decoder (5). The detection mechanism provided by the invention has simple measurement structures, is easy to operate and can accurately obtain the numerical value of the shaft current through measurement.
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Description

Technical field

[0001] The invention relates to a detection mechanism for the defects of the bearing insulation structure of a wind power generator, in particular to a detection mechanism and a detection method for detecting the structural defects of the wind power generator with bearing galvanic corrosion. Background technique

[0002] According to statistics, bearing failures of wind turbines account for more than 50% of the total number of failures of wind turbines. Bearing failures of wind turbines have become the main factor affecting generator reliability. Bearing failures are mainly manifested in bearing galvanic corrosion, lubrication, and bearing In several aspects, such as over-temperature and abnormal noise, the main fault is bearing galvanic corrosion. Bearing galvanic corrosion is also called arcing or arcing. Grease is used in the bearings of wind turbines. The grease will produce an oil film between the inner ring, outer ring and rolling elements of the bearing. Th...

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the drawings:

[0019] A structure defect detection mechanism for a bearing galvanic wind generator, which includes the AS end bearing inner cover 1 of the bearing galvanic wind generator and the BS end bearing inner cover 6 of the bearing galvanic wind generator. The AS end bearing inner cover 1 The AS end insulation support frame 2 is provided on the inner surface, and the AS end Rogowski detection coil 4 is provided on the AS end insulation support frame 2. The AS end Rogowski detection coil 4 is wrapped around the shaft of the bearing galvanic wind generator. The Rogowski detection coil 4 on the AS side is bound and fixed with the insulation support frame 2 on the AS side by the AS side insulation binding band 3, and the Rogowski detection coil 4 on the AS side is electrically connected to the oscilloscope 11 through the AS side decoder 5.

[0020] A BS end insulation support frame 7 is provided ...