Solid-sealed polar pole and production method thereof

Abstract

The invention discloses a solid-sealed polar pole. The solid-sealed polar pole comprises a vacuum arc-extinguishing chamber, a first wire inlet and outlet bushing, a second wire inlet and outlet bushing and an insulated bushing, wherein the vacuum arc-extinguishing chamber comprises a main body, a static end and a moveable end; the first wire inlet and outlet bushing is provided with a mounting cavity; the static end of the vacuum arc-extinguishing chamber is placed in the mounting cavity and is electrically connected with the first wire inlet and outlet bushing. In addition, the invention also provides a production method of the solid-sealed polar pole. The production method is used for producing the solid-sealed polar pole and comprises the following steps: placing the static end of the vacuum arc-extinguishing chamber in the mounting cavity of the first wire inlet and outlet bushing, wherein the static end of the vacuum arc-extinguishing chamber is connected with the first wire inlet and outlet bushing; placing the vacuum arc-extinguishing chamber which is mounted in the first step into a die, wherein a filling port is formed in the position, corresponding to the first wire inlet and outlet bushing, of the die; applying pressure which exceeds 10 MPa and performing injection molding on a thermoplastic material to manufacture the insulated bushing so as to finish packaging of the vacuum arc-extinguishing chamber.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a solid-sealed pole and a production method thereof. Background technique [0002] The embedded pole is an integral part formed by embedding the vacuum interrupter and other related conductive parts of the circuit breaker into the insulating material. [0003] The vacuum interrupter is approximately a cylindrical closed structure with a vacuum inside. Although the body of the vacuum interrupter has certain insulation properties, in order to further increase its insulation, it is necessary to add an insulating sleeve outside the vacuum interrupter. Tube. [0004] However, since the structure of the vacuum interrupter is difficult to withstand high voltage, there is a method of producing the solid-sealed pole by prefabricating the insulating bushing, and then installing the vacuum interrupter on the insulating bushing. [0005] In the above method, the first step is pre-inj...

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Problems solved by technology

[0006] However, in the production of embedded poles by this method, the insulating layer needs to be injection-molded in advance, and then the vacuum interrupter and the insulating sleeve are installed, which leads to low production efficiency of the embedded poles

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