Structure and method for weakening vibration of operating mechanism by means of axial nonlinear transmission of waves

Abstract

The invention discloses a structure and method for weakening vibration of an operating mechanism by means of axial nonlinear transmission of waves. An axially symmetric connector provided with an axial zigzag structure and made of a damping material is adopted, and the connector has the function of weakening influences of vibration caused by the operating mechanism of a circuit breaker and propagation of vibration energy. The propagation path of vibration waves is changed due to the axially symmetric connector which is provided with an axial zigzag structure made of the damping material and arranged on the propagation path of the vibration waves in the operating mechanism, so that the propagation path of the propagated vibration waves is both axial and radial. The zigzag structure further weakens vibration intensity and absorbs the vibration energy by increasing refraction and reflection of the vibration waves. Besides, the damping material and the zigzag structure of the axially symmetric connector are combined in use, so that the propagation path of the vibration waves is lengthened, and the damping material consumes more energy of the vibration waves.

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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