Terminal connection box for optical phase conductor

Abstract

The invention relates to a terminal connection box for an optical phase conductor, which is an optical cable connection box for 220KV optical phase conductor (OPPC). The connection box is provided with an upper box body and a lower box body, a composite hollow insulator is arranged between the upper box body and the lower box body, and an equalizing ring is arranged between the upper box body and the composite hollow insulator; the upper box body is provided with an optical phase conductor clamp, and a cable feeding hole is provided with an introduction tube, a rubber ring I and a nut; the cable feeding hole is internally provided with a rubber cone I and a small pressure ring I; the bottom of the upper box body is provided with a large pressure ring, a small pressure ring II and a rubber cone II; the large pressure ring is provided with a support screw I, a disc fiber board I and a disc fiber board cover I; the upper part of the upper box body is provided with a sealing gasket and an upper cover; the composite hollow insulator is internally penetrated by an optical fiber unit and filled with silica gel; the lower box body is provided with a sealing device of the optical fiber unit, an introduction cable of the lower box body is provided with an introduction cable clamp, a rubber ring II and a nut II; and the lower box body is internally provided with an optical fiber storage device.

Description

technical field [0001] The invention relates to an optical fiber composite phase line terminal joint box, which is a joint box for 220KV optical fiber composite phase line (OPPC) optical cable. Background technique [0002] Conventional optical fiber composite phase line (OPPC) terminal splice box is to pass the incoming optical cable directly through the composite hollow insulator, which is easy to form a discharge path in the hollow; the connection between the optical fiber composite phase line and the splice box adopts parallel groove clamps, and the applicable cable diameter The range is small, and there are sharp discharges at places with sharp corners; at the same time, in high-voltage lines, there are many insulators in the insulator string, and the voltage distribution on each insulator is uneven, and the first insulator near the wire withstands high Therefore, the deterioration rate of the first piece of insulator is very high. In order to improve the voltage distri...

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Problems solved by technology

[0002] Conventional optical fiber composite phase line (OPPC) terminal splice box is to pass the incoming optical cable directly through the composite hollow insulator, which is easy to form a discharge path in the hollow; the connection between the optical fiber composite phase line and the splice box uses parallel groove clamps, and the applicable cable diameter The range is small, and there are sharp discharges in places with sharp corners; at the same time, in high-voltage lines, there are many insulators in the insulator string, and the voltage distribution on each insulator is uneven, and the first insulator close to the wire withstands high Therefore, the degradation rate of the first piece of insulator is very high, in order to improve the voltage distribution of the insulators in the insulator string, it is necessary to install a voltage equalizing ring on the composite insulator

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