Automatic reclosing device of prepayment circuit breaker

Abstract

The invention relates to an automatic reclosing device of a prepayment circuit breaker. The automatic reclosing device comprises a shell, a transmission mechanism, an intelligent control circuit board and an electromagnetic trip mechanism, wherein the transmission mechanism comprises a positive and negative rotation motor, a worm, a speed reduction gear assembly and a clutch assembly, the speed reduction gear assembly comprises a first speed reduction gear, a second speed reduction gear, a third speed reduction gear and a fourth speed reduction gear, the clutch assembly comprises a clutch shaft and a clutch half gear, a breaking Hall sensor and a closing Hall sensor are respectively arranged at parts, corresponding to a motion curve of the clutch shaft, on the intelligent control circuit board, a first magnet is arranged on a positioning block of the clutch shaft and is matched with the breaking Hall sensor and the closing Hall sensor, a motor control Hall sensor is arranged at a position, corresponding to the fourth speed reduction gear, on the intelligent control circuit board, and two second magnets are respectively arranged on the fourth speed reduction gear and are matched with the motor control Hall sensor. The automatic reclosing device has the advantages of compact structure, long service lifetime, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to an automatic reclosing device for an external circuit breaker with a prepaid electric energy meter. Background technique [0002] At present, with the development of my country's smart grid, there is an urgent need to control electrical appliances intelligently under the premise of requiring grid operation safety. For example, the combined use of prepaid electric energy meters and prepaid miniature circuit breakers can enable electric users to automatically cut off the power supply when the prepaid electricity charges are exhausted. This greatly facilitates the distribution and control of electric energy by the power supply unit. However, after the user renews the fee, the user's circuit breaker cannot be automatically closed in time, and the user or the power supply staff need to manually operate, which brings inconvenience to the user and cannot meet the needs of the ...

AI Technical Summary

Problems solved by technology

However, after the user renews the fee, the user's circuit breaker cannot be automatically closed in time, and the user or the power supply staff need to manually operate, which brings inconvenience to the user and cannot meet the needs of the intelligent development of the power grid.

In order to cope with new situation changes, automatic reclosing devices are installed on existing miniature circuit breakers. However, the structural design of the automatic reclosing devices of existing miniature circuit breakers is unreasonable. Rapid tripping, however, the handle of the circuit breaker is limited by the control handle of the automatic reclosing device and cannot be quickly returned. For the user, it is a very serious safety hazard and cannot guarantee the user's electricity safety.

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