Docked switchable junction box for high-voltage coaxial cables

Abstract

The invention relates to a docked switchable junction box for high-voltage coaxial cables. Three openings are formed in one side surface of the junction box; each opening corresponds to a hoop for clamping an outer conductor of one high-voltage coaxial cable and another hoop for clamping an inner conductor of the high-voltage coaxial cable in the box; the side surface, corresponding to an openingside, of the box is rotationally connected with an insulating rod; two same metal rings are fixed on the insulating rod; two same rotating connection arms at an included angle of 120 degrees are fixedon each of the two metal rings; each hoop is connected with a metal clamping piece; and four rotating connection arms are separately located in gaps of the four metal clamping pieces through rotatingthe insulating rod to be clamped by the corresponding metal clamping pieces. The docked switchable junction box has the advantages that fast replacement of a grounding box in a manner of switching the high-voltage coaxial cables can be achieved through the docked switchable junction box for the high-voltage coaxial cables in a fault of the grounding box; and the fault grounding box does not needto be replaced or overhauled on site by adopting a long-term power-off method.

Description

technical field [0001] The invention relates to a high-voltage coaxial cable connection box, in particular to a high-voltage coaxial cable connection box that can be used to switch access lines. Background technique [0002] Electric safety regulations stipulate that the non-live metal shell of electrical equipment must be grounded, so the metal shielding layer (metal aluminum sheath) of high-voltage cables should be grounded. Usually two sections of high-voltage cables are connected through insulating heads. At the joint, the cores of the two sections of high-voltage cables are connected together, but the aluminum sheaths of the two sections of high-voltage cables are not connected together, and the aluminum sheaths are disconnected. The aluminum sheaths of the two sections of high-voltage cables are connected to the grounding box through high-voltage coaxial cables to achieve grounding. [0003] The central axis of the high-voltage coaxial cable is a copper conductor, plu...

AI Technical Summary

Problems solved by technology

[0004] Usually, the high-voltage coaxial cable is directly connected to the cable grounding box. When the cable grounding box fails, it will directly cause the metal shielding layer of the high-voltage cable to fail. It is unsafe and not allowed to energize the high-voltage cable without grounding. , it is necessary to repair or replace the grounding box of the faulty cable in a power outage, and a power outage will bring a lot of inconvenience or even loss to the user

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