Ultrasonic flaw detection device for slewing ring bearings in wind power generation

Abstract

The invention discloses an ultrasonic flaw detector for a wind-driven power-generating rotary support bearing, which comprises a power system, a roller part detection system, a tread detection system, a left side face detection system and a right side face detection system. The roller part detection system is used for detecting a roller part of an outer ring of a bearing needing surface detection, the tread detection system is used for detecting the outer surface of the bearing needing surface detection, the left side face detection system and the right side face detection system are used fordetecting the left side end face and the right side end face of the bearing needing surface detection, the tread detection system is arranged just below a workpiece, the left side face detection system and the right side face detection system are symmetrically arranged on the two sides of the workpiece, and the roller part detection system is arranged behind the left side face detection system. The device has high detection speed, high reliability and high degree of automation, and cracks and defects equivalent to flat-bottomed holes with the diameter phi greater than 1 on the roller surface,the tread and the two outer side faces of the wind-driven power-generating rotary support bearing can be effectively detected. Since the method of imaging detection is adopted, the quantification accuracy and the defect detection rate can be improved greatly.

Description

technical field [0001] The invention relates to an imaging detection device, in particular to an ultrasonic characteristic imaging detection device for detecting defects of wind power generation slewing ring bearings. Background technique [0002] Wind power slewing ring bearings are rolling bearings used in the yaw system and pitch system of wind turbines. Wind power slewing ring bearings often work under harsh working conditions and must bear a large overturning moment. Wind power bearings are required to be free of maintenance for 20 years. If the bearing is damaged within the 20-year warranty period, the claim fee will be very high, and disassembly is very difficult. [0003] Since the slewing ring bearing is located in the yaw system and the pitch system, it must bear a large overturning moment. Therefore, when there is a When there are defects, it will have a great impact on the life of the bearing. For this reason, it is expected that on the raceway surface, tread ...

AI Technical Summary

Problems solved by technology

However, in the current bearing industry, the detection technology for wind power slewing ring bearings is far from enough. Until now, all manufacturers have not had automatic non-destructive testing devices for wind power slewing ring bearings. Generally, manufacturers use manual A-scanning for flaw detection. Large volume, low efficiency, poor reliability

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