Anti-biting optical cable

Abstract

The invention belongs to the field of optical cables, and particularly relates to an anti-biting optical cable. The cable comprises a central reinforcing member, an inner sheath and an outer sheath which are sequentially arranged from inside to outside. An optical fiber cavity is arranged in the inner sheath, a row type optical fiber sleeve is arranged in the optical fiber cavity, and a plurality of optical fibers are arranged in the sleeve; the outer surface of the inner sheath is coated with an insulating armor layer, and the insulating armor layer extends to the center of the optical cable and coats the outer surface of the central reinforcing member, and is attached to the inner sheath to form an opening. The outer side of the insulating armor layer is coated with the outer sheath, and polyurethane fiber cloth is arranged on the inner surface of the outer sheath; the insulating armor layer is prepared by extrusion molding of insulating silicon resin; a second reinforcing piece is arranged at the opening of the insulating armor layer, the side walls of the two ends of the second reinforcing piece abut against the side wall of the opening in the circumferential direction, and the end portions of the two ends abut against the inner surface of the polyurethane fiber cloth outwards in the radial direction. The optical cable provided by the invention has very effective anti-biting performance, and the anti-biting performance can be kept for a long time.

Description

technical field

[0001] The invention belongs to the field of optical cables, in particular to an anti-bite optical cable. Background technique

[0002] In order to overcome the problem of easy bite damage when laying optical cables in the field, a variety of optical cables with anti-bite properties have been developed. For example, the common GYTA optical cable, and some lightning-prone areas use all-non-metallic structure overhead optical cables, but in areas with developed vegetation, most of the existing anti-bite optical cables cannot produce the expected anti-bite effect. In terms of bite performance, most optical cables use physical strengthening methods, but they can cure the symptoms but not the root cause, and are still prone to damage after long-term use, while chemical anti-bite optical cables mostly use the method of adding synthetic capsaicin, which is used in optical cables. It is easy to diffuse and volatilize in the process, resulting in a short validity per...

Examples

Embodiment 1

[0043] such as figure 1 Anti-bite fiber optic cable shown, which specifically includes:

[0044] The central reinforcement 100, the inner sheath 200 and the outer sheath 300 are sequentially arranged from the inside to the outside;

[0045] The inner sheath 200 is U-shaped, and is provided with an arc-shaped optical fiber cavity 201. The optical fiber cavity 201 is provided with a row-type optical fiber sleeve 202, and the row-type optical fiber sleeve 202 is provided with a number of optical fiber lines 2021. , the optical fiber line 2021 is a single optical fiber or an optical fiber bundle composed of multiple optical fibers;

[0046] The row-type optical fiber sleeve 202 is loosely installed in the optical fiber cavity 201;

[0047] The outer surface of the inner sheath 200 is covered with an insulating armor layer 203 that isolates static electricity. The insulating armor layer 203 extends to the center of the optical cable and is covered on the outer surface of the cent...

Embodiment 2

[0057] Due to the structural characteristics of the optical cable of the present invention, the optical cable of the present invention has an eccentric feature, and the center of gravity does not coincide with the cable core, and in the process of being bitten by rodents, the actual row of optical fiber sleeves 202 will meet the inner sheath 200. The optical fiber cavity 201 produces relative friction, and the way of loose fitting makes the relative friction more frequent;

[0058] Therefore, the row-type optical fiber ferrule 202 and the inner sheath 200 are further improved;

[0059] like image 3 As shown, the inner sheath 200 and the row-type optical fiber sleeve 202 are both made of polyurethane material, a conductive film 2031 is provided on the surface of the V-shaped opening of the insulating armor layer 203, and the row-type optical fiber sleeve 202 passes through the optical fiber cavity 201 , pass through the inner sheath 200 and part of the insulating armor layer ...

technical field

[0001] The invention belongs to the field of optical cables, in particular to an anti-bite optical cable. Background technique

[0002] In order to overcome the problem of easy bite damage when laying optical cables in the field, a variety of optical cables with anti-bite properties have been developed. For example, the common GYTA optical cable, and some lightning-prone areas use all-non-metallic structure overhead optical cables, but in areas with developed vegetation, most of the existing anti-bite optical cables cannot produce the expected anti-bite effect. In terms of bite performance, most optical cables use physical strengthening methods, but they can cure the symptoms but not the root cause, and are still prone to damage after long-term use, while chemical anti-bite optical cables mostly use the method of adding synthetic capsaicin, which is used in optical cables. It is easy to diffuse and volatilize in the process, resulting in a short validity per...

Examples

Embodiment 1

[0043] such as figure 1 Anti-bite fiber optic cable shown, which specifically includes:

[0044] The central reinforcement 100, the inner sheath 200 and the outer sheath 300 are sequentially arranged from the inside to the outside;

[0045] The inner sheath 200 is U-shaped, and is provided with an arc-shaped optical fiber cavity 201. The optical fiber cavity 201 is provided with a row-type optical fiber sleeve 202, and the row-type optical fiber sleeve 202 is provided with a number of optical fiber lines 2021. , the optical fiber line 2021 is a single optical fiber or an optical fiber bundle composed of multiple optical fibers;

[0046] The row-type optical fiber sleeve 202 is loosely installed in the optical fiber cavity 201;

[0047] The outer surface of the inner sheath 200 is covered with an insulating armor layer 203 that isolates static electricity. The insulating armor layer 203 extends to the center of the optical cable and is covered on the outer surface of the cent...

Embodiment 2

[0057] Due to the structural characteristics of the optical cable of the present invention, the optical cable of the present invention has an eccentric feature, and the center of gravity does not coincide with the cable core, and in the process of being bitten by rodents, the actual row of optical fiber sleeves 202 will meet the inner sheath 200. The optical fiber cavity 201 produces relative friction, and the way of loose fitting makes the relative friction more frequent;

[0058] Therefore, the row-type optical fiber ferrule 202 and the inner sheath 200 are further improved;

[0059] like image 3 As shown, the inner sheath 200 and the row-type optical fiber sleeve 202 are both made of polyurethane material, a conductive film 2031 is provided on the surface of the V-shaped opening of the insulating armor layer 203, and the row-type optical fiber sleeve 202 passes through the optical fiber cavity 201 , pass through the inner sheath 200 and part of the insulating armor layer ...

Images