Cable terminal with stress pipe

Abstract

The invention discloses a cable terminal with a stress pipe, which solves the problem of poor dispersing effect of an electric field generated by a stress pipe arranged in the traditional cable terminal on the cable stripping end. The cable terminal with the stress pipe comprises a cable and a silicon rubber cable terminal sleeve, wherein the cable comprises a line core, an insulating layer, an outer shield and an outer jacket in sequence from inside to outside; the end part of the cable is stripped at a certain size in sequence; a plurality of annular umbrella skirts are arranged on the peripheral surface of the silicon rubber sleeve in parallel; the silicon rubber sleeve is sleeved at the periphery of the insulating layer of the cable stripping end; a stress pipe which is sleeved at the periphery of the cable stripping end is arranged in the silicon rubber sleeve; the stress pipe is made of insulating silicon rubber, conducting silicon rubber, nano barium titanate and nano titanium dioxide; the stress pipe comprises an outer-layer stress pipe and an inner-layer stress pipe; the outer-layer stress pipe and the inner-layer stress pipe are coaxially sleeved together; the dielectric constant of the outer-layer stress pipe is between 12 and 20; and the dielectric constant of the inner-layer stress pipe is between 20 and 30.

Description

technical field [0001] The invention relates to a cable terminal, in particular to a cable terminal with a stress tube. Background technique [0002] A Chinese utility model patent (patent number: 200820217967.5) discloses a cold-shrinkable terminal head for a three-core cross-linked cable. There is a terminal at one end, a sealing tube under the terminal, a single-hole rainproof skirt on the middle of the wire core and the cold-shrink insulation tube, and the other ends of the three-strand wire core pass through the holes of the three-hole rainproof skirt and are made of silicone rubber. The sheaths are wrapped together, and the silicone rubber sheath is provided with cold-shrink gloves, and a ground wire is provided between the cold-shrink gloves and the silicone rubber sheath. A copper shielding layer is provided inside the silicone rubber sheath. The utility model simplifies the structure of the original cold-shrinkable terminal head, and at the same time improves the ...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual operation process of the above two kinds of cable terminals, the electric field distribution generated at the stripped end of the cable is uneven, and the electrical stress concentration is easy to occur in the actual use process, which affects the safety of the transmission line.

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