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

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.

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...

AI Technical Summary

Problems solved by technology

[0003] The current detection of the energy storage motor mainly finds the problem of the energy storage motor, which cannot directly reflect the fault of the circuit breaker spring; Jeong-Hyun Sohn et al. conducted tests on the static and dynamic stress states of the energy storage spring of the circuit breaker, and compared it with the simulation model. However, the test process requires the spring to be disassembled for offline detection, and the state of the spring cannot be detected during the operation and action of the circuit breaker.

Images