Fixedly-sealed polar column with anomalous soft connection

Abstract

The invention relates to a fixedly-sealed polar column with an anomalous soft connection. The fixedly-sealed polar column comprises a vacuum extinction chamber which is arranged inside the fixedly-sealed polar column; the upper end of a movable end is arranged inside the vacuum extinction chamber; the lower end of the movable end, which goes out of the vacuum extinction chamber, is connected with one end of the anomalous soft connection; the lower side of one end of the anomalous soft connection is connected with an insulating tension rod; the other end of the anomalous soft connection is integrally connected with a lower line outlet seat through a screw; the lower end of the movable end is in an external taper shape and the connection part of the anomalous soft connection with the lower end of the movable end is in the shape of a column with an internal taper; the connection part where the other end of the anomalous soft connection is connected with the lower line outlet seat through the screw is in the shape of a binding face; and a thread through hole is arranged on the binding face and the screw extends from a through hole of the lower line outlet seat to the thread through hole. The fixedly-sealed polar column provided by the invention has the beneficial effects that the contact area between the movable end of the extinction chamber and the soft connection is enlarged, the flow rate is increased, the loop resistance is easy to reduce, fewer parts are mounted and the design is simpler than that of sliding connection.

Description

technical field [0001] The invention relates to a solid-sealed pole, in particular to the structure of the soft connection in the solid-sealed pole and the movable contact connection of the solid-sealed pole. Background technique [0002] The function of the solid-sealed pole is to extinguish the arc through the vacuum interrupter, so as to break the overload current and protect the electrical equipment. [0003] In the prior art, there are two common ways of connecting the movable conductive rod of the internal arc extinguishing chamber of the solid-sealed pole and the lower outgoing line, that is, the flexible connection method and the sliding connection method. [0004] Depend on figure 1 It can be seen (ordinary soft connection): the solid-sealed pole 1 is embedded in the vacuum interrupter 2, the upper end of the moving end 3 is in the vacuum interrupter 2, and the lower end of the moving end 3 of the vacuum interrupter 2 passes through the soft connection 4 are conne...

AI Technical Summary

Problems solved by technology

[0007] The contact area of ​​the pole connected by the above-mentioned spring contact finger method becomes larger, which can increase the rated current of the pole, but there are many problems in the structural design of the spring contact finger, such as the split connection movable contact (conductive part) and the connecting part of the moving end of the arc extinguishing chamber, the thread is easy to be damaged after the circuit breaker is repeatedly turned on and off; the integrated connection type has the problem of difficulty in disassembly; Strict, if there is a problem with the cooperation of the two, it will often lead to problems such as large contact force or contact resistance in the arc extinguishing chamber, and installation on the mechanism will affect the opening and closing speed of the mechanism.

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