Pulse-heating exploding driving device

Abstract

The invention discloses a pulse-heating exploding driving device which comprises a pulse power supply, a control switch, a high-voltage electrode, a low-voltage electrode and a driving piece. The control switch is used for controlling the pulse power supply to be connected and disconnected, the high-voltage electrode is electrically connected with the high-voltage end of the pulse power supply, the low-voltage electrode is electrically connected with the low-voltage end of the pulse power supply, the driving piece comprises a closed cavity with a first reserved volume and a transmission rod connected with the closed cavity, conductive media heated to be exploded are filled into the closed cavity, and the high-voltage electrode and the low-voltage electrode are respectively inserted into the closed cavity and are both in contact with the conductive media. When the control switch controls the pulse power supply to be connected, the high-voltage electrode and the low-voltage electrode carry out discharging on the closed cavity to enable the conductive media to be heated and exploded, and therefore the closed cavity is made to be expanded from the first reserved volume to a second reserved volume to drive the transmission rod to fast move. The pulse-heating exploding driving device has the advantages of being simple in structure, high in reliability, fast and the like.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a pulse heating and detonation driving device. Background technique [0002] The mechanical driving device outside the circuit breaker body is called the operating mechanism. The operating mechanism drives the moving contact to achieve the purpose of breaking and closing the circuit. In recent years, fast operating mechanism has become a research hotspot, and it can be applied to improve power quality, phase control switch, current limiter and DC circuit breaker and other fields. [0003] At present, the mainstream operating mechanisms mainly include four types: spring operating mechanism, hydraulic operating mechanism, permanent magnet operating mechanism, and electromagnetic repulsion operating mechanism. Among them, the main advantage of the spring operating mechanism is that it requires a small power supply capacity, both AC and DC power supplies are available, a...

AI Technical Summary

Problems solved by technology

Among them, the main advantage of the spring operating mechanism is that it requires a small power supply capacity, both AC and DC power supplies are available, and it can still perform one closing and one opening operation when the power supply is temporarily lost; but its structure is complicated, its reliability is low, zero High machining accuracy requirements for components, suitable for small and medium-sized circuit breakers

The hydraulic operating mechanism requires a DC power supply. It can still be operated many times after losing the power supply. It has high power and stable operation, but its processing accuracy is high, the price is relatively expensive, and its pressure builds up. It takes a certain amount of time, so it cannot be used for fast switching

The permanent magnet operating mechanism has the advantages of simple structure, no need for locking parts, high reliability, and maintenance-free, but its speed cannot meet the requirements of fast switching

The electromagnetic repulsion operating mechanism has the advantages of simple structure, fast operating speed, and small time dispersion, but limited by its principle, as the distance between the metal disk and the coil increases, the electromagnetic repulsion will decrease rapidly, so it cannot be applied in Long-stroke operation, but only suitable for use with vacuum circuit breakers

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