Device and method for detecting crisp and rotten defects of composite insulator core rod

Abstract

The invention relates to the technical field of insulator core rod detection, and discloses a composite insulator core rod crisp and decay defect detection device and a detection method thereof.The detection device comprises a knocking rod, an acoustic sensor is arranged at the end of one side of the knocking rod, the detection device further comprises a computer, and the acoustic sensor is in electrical communication connection with the computer; the method further comprises the following steps that a knocking point is selected on the detected composite insulator core rod, a knocking rod is used for knocking, the detected composite insulator core rod generates vibration after being knocked, the vibration drives surrounding air, the surrounding air is spread in the air in the form of sound waves, the acoustic sensor generates an electric signal under the influence of the sound waves, and the electric signal is transmitted to the detected composite insulator core rod. The electric signal is sent to a computer, the computer processes and calculates the electric signal sent by the acoustic sensor, and meanwhile, the computer generates a diagnosis model and carries out crisp and decay defect diagnosis on the detected composite insulator core rod according to data calculated by the computer; the method has the characteristics of accurate detection result and simplicity in operation.

Description

Technical field [0001] The present invention relates to the field of insulator core rod detection, and more particularly to detecting devices of composite insulator core battered defects and detection methods thereof. Background technique [0002] The composite insulator is a large number of applications in my country's power systems due to their excellent anti-fouling flash performance and high strength, not easy to break, light weight, easy to install maintenance, etc.; At present, composite insulators have break failures in the application process, once composite Insulators will cause a serious drop of accidents, which has seriously affected the safety and stability of the power system. In recent years, there have been a composite insulators in the form of conventional fracture, and the typical characteristics of typical characteristics. : The macroblock has a serious deterioration macro. The macroscopic section is not smooth, the texture of the mandrel, the shape of the dead ...

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Problems solved by technology

[0010] However, the above methods have certain problems. The ultrasonic method is mostly used in laboratory testing. Because the probe needs to be close to the object to be measured, the position of the probe must be at the defect, and there are deficiencies such as complicated operation and installation. The infrared detection method is affected by the external environment. Larger, and it is impossible to distinguish pollution from decay defects, and it is impossible to judge the severity of decay intuitively. The ultraviolet method must be operated at night and in an environment above 0°C. When testing, the composite insulator should be undergoing partial discharge, and the discharge part is facing the ultraviolet detection. The signal is easily interfered by the corona discharge of the transmission line and the composite insulator grading ring. The X-ray method, the electric field method and the microwave method all have problems such as difficult online detection and complicated operation. An easy-to-operate detection method for cracking defects of core rods of composite insulators

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