CN216564473U

CN216564473U - Low-temperature-resistant and sand-wind-resistant 10-35kv high-voltage cable terminal

Info

Publication number: CN216564473U
Application number: CN202122594524.6U
Authority: CN
Inventors: 王立平; 王卫玉; 王剑琦; 耿鑫; 刘聪
Original assignee: Liaoning Shenpeng Electric Power Technology Co ltd
Current assignee: Liaoning Shenpeng Electric Power Technology Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-05-17
Anticipated expiration: 2031-10-27

Abstract

The utility model discloses a low-temperature-resistant and sand-wind-resistant 10-35kv high-voltage cable terminal which comprises a cable, wherein a silicon rubber insulating part is fixedly sleeved on the surface of the cable, a semi-conductive stress cone is fixedly connected to the right side inside the silicon rubber insulating part in an embedded mode, a hard sheath is fixedly sleeved on the outer surface of the silicon rubber insulating part, a shielding cap is fixedly sleeved on the left side of the surface of the hard sheath, a wire outlet rod is fixedly connected to the inner cavity of the shielding cap and positioned on the left side of the cable, and the left side of the wire outlet rod penetrates through the left side of the shielding cap and extends to the outside of the shielding cap. The cable, the shielding cap, the filling adhesive, the hard sheath, the silicon rubber insulating part, the semi-conductive stress cone and the wire outlet rod are matched for use, so that the cable has the advantages of low temperature resistance and wind and sand resistance, the problems that the electrical performance of the thermal shrinkage cable terminal is reduced in cold regions in winter, and the surface of the cold shrinkage silicon rubber terminal is easily damaged in a wind and sand environment are solved, and the cable can be widely applied to special use environments such as rail transit, offshore drilling platforms and the like.

Description

Low-temperature-resistant and sand-blown-resistant 10-35kv high-voltage cable terminal

Technical Field

The utility model relates to the technical field of ultrahigh-voltage power transmission and distribution, in particular to a low-temperature-resistant and wind-sand-resistant 10-35kv high-voltage cable terminal.

Background

A thermal shrinkage type cable terminal is commonly called as a thermal shrinkage cable head and is widely used on a cross-linked cable or an oil-immersed cable terminal with the voltage grade of 35KV and below, compared with the traditional cable accessory, the thermal shrinkage type cable terminal has the characteristics of small volume, light weight, safety, reliability, convenient installation and the like, the 10-35KV thermal shrinkage cable terminal consists of a stress tube and a thermal shrinkage sheath, when the temperature difference of the use environment is large, an ethylene propylene rubber insulating layer can shrink and the shrinkage rate is far larger than that of the stress tube and the thermal shrinkage sheath, but the difference of the shrinkage rates of the materials can generate a gap, the gap can generate great hidden trouble to the operation safety of a product, the thermal shrinkage cable terminal head is formed by injecting and vulcanizing elastomer materials (commonly used silicon rubber and ethylene propylene rubber) in a factory, then is expanded and lined with plastic spiral supports to form parts of various cable accessories, and the 10-35KV thermal shrinkage silicon rubber cable terminal is soft, when the wind and sand are severe in the use environment, the surface of the terminal can be greatly damaged, so that the terminal product is damaged, and the electrical performance is reduced particularly in cold regions in winter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-temperature-resistant and wind-sand-resistant 10-35kv high-voltage cable terminal, which has the advantages of low-temperature resistance and wind-sand resistance, and solves the problems that the electrical performance of a thermal shrinkage cable terminal is reduced in a cold area in winter, and the lower surface of a cold shrinkage silicon rubber terminal is easily damaged in a wind-sand environment.

In order to achieve the purpose, the utility model provides the following technical scheme: resistant sand that weathers 10-35kv high tension cable terminal of low temperature, which comprises a cable, the fixed surface cover of cable is equipped with the silicon rubber insulating part, the inside right side of silicon rubber insulating part is inlayed and is had the semi-conductive stress cone of fixedly connected with, the fixed surface cover of silicon rubber insulating part is equipped with the stereoplasm sheath, the fixed cover in left side on stereoplasm sheath surface is equipped with the shielding cap, the inner chamber of shielding cap and the left side fixedly connected with lead-out pole that is located the cable, the left side of lead-out pole runs through the left side of shielding cap and extends to its outside.

Preferably, the filling glue is filled in the inner cavity of the shielding cap and positioned between the outer parts of the silicon rubber insulators.

Preferably, the outer surface of the hard sheath is of a plurality of circular sleeve ring structures, each circular sleeve ring is designed in a wave crest shape, and the hard sheath is made of polyolefin materials.

Preferably, a round hole is formed in the outgoing line rod in a penetrating mode, and the surface of the semi-conductive stress cone is in contact with the surface of the cable.

Preferably, the joint of the right side of the hard sheath and the silicon rubber insulating part is sealed.

Compared with the prior art, the utility model has the following beneficial effects:

1. the cable, the shielding cap, the filling adhesive, the hard sheath, the silicon rubber insulator, the semi-conductive stress cone and the wire outlet rod are matched for use, so that the cable has the advantages of low temperature resistance and wind sand resistance, the problems that the electrical performance of the thermal shrinkage cable terminal is reduced in cold areas in winter, and the surface of the cold shrinkage silicon rubber terminal is easily damaged in a wind sand environment are solved, and the cable can be widely applied to special use environments such as rail transit, offshore drilling platforms and the like.

2. According to the utility model, through the use of the silicon rubber insulating part, the condition of cable terminal breakdown caused by large difference between the insulation shrinkage rates of the stress tube of the thermal shrinkage cable terminal and the cable is avoided, through the use of the hard sheath, the condition that the silicon rubber cable terminal is damaged by sand wind is avoided, and the safety and reliability of the thermal shrinkage cable terminal and the cold shrinkage cable terminal are combined, so that the safety and reliability are greatly improved compared with the existing 10-35kv cable terminal.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1 cable, 2 shielding caps, 3 filling glue, 4 hard sheaths, 5 silicon rubber insulators, 6 semi-conductive stress cones and 7 outgoing lines.

Detailed Description

Referring to fig. 1, the low temperature resistant and sand wind resistant high voltage cable terminal is 10-35 kv; comprises a cable 1; the surface of the cable 1 is fixedly sleeved with a silicon rubber insulating part 5; through the use of the silicone rubber insulator 5; the condition that the cable terminal is punctured due to the fact that the difference between the insulation shrinkage rates of the stress tube of the thermal shrinkage cable terminal and the cable is large is avoided; a semi-conductive stress cone 6 is fixedly connected to the right side inside the silicon rubber insulating part 5 in an embedded mode; the outer surface of the silicon rubber insulating part 5 is fixedly sleeved with a hard sheath 4; through the use of the hard sheath 4; the condition that the silicone rubber cable terminal is damaged by wind and sand is avoided; the shielding cap 2 is fixedly sleeved on the left side of the surface of the hard sheath 4; an outlet rod 7 is fixedly connected to the inner cavity of the shielding cap 2 and positioned on the left side of the cable 1; the left side of the outlet rod 7 penetrates through the left side of the shielding cap 2 and extends to the outside of the shielding cap; combining a thermal contraction cable termination with a cold contraction cable termination; compared with the existing 10-35kv cable terminal, the safety and reliability are greatly improved.

The inner cavity of the shielding cap 2 and the space between the silicon rubber insulators 5 are filled with filling rubber 3.

The outer surface of the hard sheath 4 is of a plurality of circular lantern ring structures; each circular lantern ring is designed in a wave crest shape; the hard sheath 4 is made of polyolefin material.

A round hole is arranged on the wire outlet rod 7 in a penetrating way; the surface of the semi-conductive stress cone 6 is in contact with the surface of the cable 1.

The joint of the right side of the hard sheath 4 and the silicon rubber insulating part 5 is sealed.

When the cable terminal is used, the condition that the cable terminal is punctured due to the fact that the difference between the thermal shrinkage cable terminal stress tube and the cable insulation shrinkage rate is large is avoided through the use of the silicon rubber insulating part 5, the condition that the silicon rubber cable terminal is damaged by sand wind is avoided through the use of the hard sheath 4, the thermal shrinkage cable terminal and the cold shrinkage cable terminal are combined, and the safety and reliability of the cable terminal are greatly improved compared with those of an existing 10-35kv cable terminal.

In summary, the following steps: the low-temperature-resistant and sand-wind-resistant 10-35kv high-voltage cable terminal solves the problems that the electrical performance of the thermal shrinkage cable terminal is reduced in cold regions in winter and the surface of the cold shrinkage silicon rubber terminal is easily damaged in sand-wind environments through the matching use of the cable 1, the shielding cap 2, the filling rubber 3, the hard sheath 4, the silicon rubber insulating part 5, the semi-conductive stress cone 6 and the wire outlet rod 7, and can be widely applied to special use environments such as rail transit, offshore drilling platforms and the like.

Claims

1. Low temperature resistant sand blown by wind 10-35kv high tension cable terminal, including cable (1), its characterized in that: the fixed surface of cable (1) is equipped with silicon rubber insulator (5), the inside right side of silicon rubber insulator (5) is inlayed and is had semi-conductive stress cone of fixedly connected with (6), the outer fixed surface cover of silicon rubber insulator (5) is equipped with stereoplasm sheath (4), the fixed cover in left side on stereoplasm sheath (4) surface is equipped with shielding cap (2), the inner chamber of shielding cap (2) and left side fixedly connected with lead-out pole (7) that are located cable (1), the left side of lead-out pole (7) is run through the left side of shielding cap (2) and is extended to its outside.

2. The low temperature and sand wind resistant 10-35kv high voltage cable termination of claim 1, wherein: and filling rubber (3) is filled in the inner cavity of the shielding cap (2) and between the inner cavity and the outer part of the silicon rubber insulating part (5).

3. The low temperature and sand wind resistant 10-35kv high voltage cable termination of claim 1, wherein: the outer surface of the hard sheath (4) is of a plurality of circular sleeve ring structures, each circular sleeve ring is designed in a wave crest shape, and the hard sheath (4) is made of polyolefin materials.

4. The low temperature and sand wind resistant 10-35kv high voltage cable termination of claim 1, wherein: and a round hole is formed in the outgoing line rod (7) in a penetrating mode, and the surface of the semi-conductive stress cone (6) is in contact with the surface of the cable (1).

5. The low temperature and sand wind resistant 10-35kv high voltage cable termination of claim 1, wherein: and the joint of the right side of the hard sheath (4) and the silicon rubber insulating part (5) is sealed.