Transmission mechanism and transmission method for connecting rod of extra-high voltage circuit breaker

Abstract

The invention relates to a transmission mechanism for the connecting rod of an extra-high voltage circuit breaker, and a control method thereof. The transmission mechanism comprises a connector, a lower connecting rod, a lower rocker, a seal rod, a first upper connecting rod, a second upper connecting rod, a first upper rocker, a second upper rocker, a first movable contact rod and a second movable contact rod. When in an ON position, the angles between the lower rocker and each of the lower connecting rod and the seal rod, between the upper rocker and the upper connecting rod, and between the movable contact rods are all zero, so that the components are kept in a straight line. When in an OFF position, the angles between the lower connecting rod and the connector and between the upper connecting rod and the seal rod are both more than 45 degrees. All components are connected in a hinged manner, and the rockers are respectively hinged to the middle point of the corresponding connecting rod. The hydraulic cylinder of the hydraulic system of the connector is directly connected, is the load inputting point of the transmission mechanism, and thereby connection and disconnection of the movable contact of the circuit breaker and the stationary contact of an arc extinguish chamber are achieved. The transmission mechanism and the transmission method are strong in reliability, less in component, good in connecting and disconnecting performance, and high in efficiency; furthermore, the transmission mechanism is compact in structure, so that the circuit breaker is small in size and light in weight.

Description

technical field [0001] The invention relates to a circuit breaker transmission mechanism and a transmission method, in particular to a UHV circuit breaker connecting rod transmission mechanism and a transmission method. Background technique [0002] UHV transmission is mainly used for large-capacity long-distance transmission. It can reduce line corridors, reduce transmission losses, save investment and operating costs, reduce local environmental pollution, improve reliability of power grid operation, and realize optimal allocation of energy resources. The economic and social benefits are an important development direction of the world power grid technology. With the rapid development of my country's economy, the requirements for the development of electric power are also constantly increasing. However, due to the serious uneven distribution of my country's current main power load areas and power resource areas, large-scale power projects require the support of UHV power gr...

AI Technical Summary

Problems solved by technology

The reliability of the transmission mechanism is extremely important, and it is required to be able to successfully separate and close the circuit under any working environment and line conditions. It has high requirements for the life of the mechanism, motion accuracy and component strength. Generate huge losses. According to statistics, the proportion of mechanical failures of all types of circuit breakers is very high, and mechanical failures often cause electrical system failures

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