Circuit breaker spring defect detection device based on magneto-acoustic emission technology

A defect detection and detection device technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to directly reflect the fault of circuit breaker springs and the inability to detect the state of springs, etc., and achieve the effect of simple and convenient operation and improved detection efficiency
CN111157610APending Publication Date: 2020-05-15STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2020-05-15

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Abstract

The invention discloses a circuit breaker spring defect detection device based on a magneto-acoustic emission technology. The circuit breaker spring defect detection device comprises a circuit breakerspring, a signal emission system, an excitation coil, a receiving coil, a transducer and a detector, wherein the excition coil and the receiving coil are respectively wound at two ends of the circuitbreaker spring, the signal emission system is connected with the excition coil, the transducer is connected with the receiving coil, and the signal emission system is connected with the detector. Andthe transducer is connected with the detector through the pre-amplifier and the main amplifier in sequence. According to the invention, when the damage state of the circuit breaker spring is detected, the magnetoacoustic emission technology is adopted for detection, and therefore whether the energy storage spring has defects or not, the position where the defects occur and the defect damage situation can be accurately judged.
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Description

technical field

[0001] The invention belongs to the technical field of circuit breakers, and more specifically relates to a detection device for circuit breaker spring defects based on magnetoacoustic emission technology. Background technique

[0002] In circuit breakers such as pneumatic-spring operating mechanism and spring operating mechanism, the operating spring as the operating power of the circuit breaker plays an important role in its operating performance and reliability. Because the spring works under the variable load of compression or tension in the circuit breaker , Long-term use will inevitably lead to fatigue aging, deformation and even fracture. With the extension of the service life of the circuit breaker, the fatigue problem of its operating spring will gradually become prominent. In recent years, there have been many circuit breaker failures caused by the deterioration and breakage of the operating spring.

[0003] The current detection of the energy sto...

Claims

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