An outdoor vacuum circuit breaker

Abstract

The invention discloses an outdoor vacuum circuit breaker. The outdoor vacuum circuit breaker structurally comprises a fixed cross arm, an efficient circulation cooling device, a shell, a wire inlet and outlet sleeve, a support frame, a vacuum arc extinguishing chamber and a current transformer. The outdoor vacuum circuit breaker has the beneficial effects that the efficient circulation cooling device is used for converting kinetic energy of wind or rainwater into mechanical energy through a flat plate impeller and fully guiding air flow into a flow guide conical cover; the air flow or the rainwater is distributed through the flow guide conical cover, so that the air flow or the rainwater fully fills each cooling pipeline; an insulation heat conduction column is connected with a metal heat conduction pipe in a pipe body, so that heat transmitted by the arc extinguishing chamber of the vacuum circuit breaker can be uniformly transferred into the cooling pipelines; and the heat is efficiently brought out by utilizing the rainwater and the air flow which flows, so that the temperature of a main loop can be effectively reduced, and the rated current of the vacuum circuit breaker is increased.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to an outdoor vacuum circuit breaker. Background technique [0002] With the continuous development of the national economy, the grid structure and load characteristics are becoming more and more complicated. In order to protect equipment and personal safety, higher requirements are put forward for the safety and reliability of power supply. The most common circuit safety devices are vacuum circuit breakers and vacuum circuit breakers. Outdoor vacuum circuit breakers can be divided into indoor vacuum circuit breakers and outdoor vacuum circuit breakers according to indoor and outdoor. Outdoor vacuum circuit breakers are generally installed on utility poles, exposed outdoors for a long time, in high temperature, rainy and other environments. It poses a serious threat, causing the vacuum circuit breaker to be unable to efficiently dissipate heat in hot summer, especially the heat dissi...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the national economy, the grid structure and load characteristics are becoming more and more complicated. In order to protect equipment and personal safety, higher requirements are put forward for the safety and reliability of power supply. The most common circuit safety devices are vacuum circuit breakers and vacuum circuit breakers. Outdoor vacuum circuit breakers can be divided into indoor vacuum circuit breakers and outdoor vacuum circuit breakers according to indoor and outdoor. Outdoor vacuum circuit breakers are generally installed on utility poles, exposed outdoors for a long time, in high temperature, rainy and other environments. It poses a serious threat, causing the vacuum circuit breaker to be unable to efficiently dissipate heat in hot summer, especially the heat dissipation of the conductive main circuit, and in the rainy season, rainwater is easy to accumulate on the top cover of the housing, and slowly accumulates, penetrating into the vacuum Inside the circuit breaker, the circuit breaker is short-circuited, which affects the normal operation and service life of the circuit breaker. Therefore, it is necessary to develop a new type of outdoor vacuum circuit breaker to solve the problem that the existing outdoor vacuum circuit breaker cannot efficiently dissipate heat in the hot summer. In the rainy season, rainwater can easily penetrate into the vacuum circuit breaker, causing the circuit breaker to short circuit

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