The structure and method of reducing the vibration of the operating mechanism by using the axial non-linear propagation of the wave

Abstract

The invention discloses a structure and method for weakening the vibration of the operating mechanism by using the axial non-linear propagation of the wave. The axisymmetric connecting piece with an axial zigzag structure made of damping material is used to weaken the action of the operating mechanism of the circuit breaker. The influence of the generated vibration and the propagation of vibration energy; the transmission path of the vibration wave is changed by adding an axisymmetric connector made of damping material with an axial tortuous structure at certain positions on the vibration wave propagation path in the operating mechanism, The vibration wave propagating in it has both axial and radial paths. The zigzag structure further weakens vibration intensity and absorbs vibration energy by increasing the refraction and reflection of vibration waves. Moreover, the combined use of the damping material and the zigzag structure of the axisymmetric connector prolongs the propagation path of the vibration wave, which further enhances the energy consumption of the vibration wave by the damping material.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation equipment, and in particular relates to a structure and method for reducing the vibration of an operating mechanism of a circuit breaker. Background technique [0002] The circuit breaker is an extremely important control device in the power system. It is widely used to switch the working current in the normal state and the overload and short-circuit current in the fault state. Whether the circuit breaker can realize the opening and closing operation in a timely and accurate manner according to the system requirements plays a vital role in the safe and stable operation of the power system. The opening and closing operation of the circuit breaker is usually realized by a specific operating mechanism driving the moving contact in the main conductive circuit. The operating mechanism is composed of an energy storage unit, a control unit and a transmission unit. The common...

AI Technical Summary

Problems solved by technology

However, in the course of its action, in addition to driving the moving contact to realize opening and closing, a considerable part of the energy is consumed in the vibration of the circuit breaker body, the operating mechanism, the circuit breaker support and other components such as the moving and static contacts, and passes through the circuit breaker. The conduction loss of the support of the device and the operating mechanism

The severe vibration of the circuit breaker body, operating mechanism and its support often leads to the deterioration of the breaking performance and life of the circuit breaker. Or radial high-frequency vibration, which will aggravate the wear of the contact material, which will further reduce the life of the circuit breaker; 2) The above-mentioned vibration may reduce the mechanical strength of the epoxy insulation parts of the circuit breaker, causing high polymer materials and other components in the insulating rod. 3) The above-mentioned vibration may cause differences in the interior of the circuit breaker arc extinguishing chamber, the inside of the operating mechanism body and the mechanism box, and between the operating mechanism box and the circuit breaker body. The looseness of the fasteners at the above position is very likely to cause the failure of the circuit breaker; 4) The above vibration may also cause the life reduction of the secondary parts in the operating mechanism box and the loosening and malfunction of the control connection line. action, etc., resulting in the circuit breaker not working properly

The above problems have buried potential safety hazards for the normal use of circuit breakers.

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