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

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.

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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Problems solved by technology

[0003] The invention provides a detection mechanism and detection method for structural defects of a wind-driven generator bearing electric erosion, which solves the problem of how to accurately measure and obtain the shaft current value of a wind-driven generator with bearing electric erosion, and provides a basis for the improved design of wind-driven generators of the same type direct borrow parameter

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