CN215895059U

CN215895059U - Lightning protection device for optical cable communication line

Info

Publication number: CN215895059U
Application number: CN202122449228.7U
Authority: CN
Inventors: 王岩; 尹珅
Original assignee: Heilongjiang Junchi Communication Technology Co ltd
Current assignee: Heilongjiang Junchi Communication Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-02-22
Anticipated expiration: 2031-10-12

Abstract

The utility model relates to the technical field of optical cables, in particular to a lightning protection device of an optical cable communication line, which comprises an outer sheath, a plurality of first grounding conductors, a fireproof layer, a waterproof layer, a first signal shield, an inner shell, a reinforcing piece and a plurality of mounting components, wherein the first grounding conductors are arranged on the outer sheath; a first filling layer is formed between the fireproof layer and the outer sheath; a plurality of first ground conductors are all arranged in the first filling layer; the waterproof layer is connected with the fireproof layer and the first signal shield; the inner shell is connected with the first signal shield; the reinforcing piece and the inner shell are coaxial; a second filling layer is formed between the plurality of mounting assemblies and the inner shell, and each mounting assembly comprises a loose sleeve, a second signal shielding layer, a plurality of second grounding conductors, a rubber layer and optical fibers; the second signal shielding layer is arranged on the inner wall of the loose sleeve; a third filling layer is formed between the rubber layer and the second signal shielding layer; a plurality of second ground conductors are mounted within the third fill layer. When the optical fiber is subjected to external force, the optical fiber can still be normally used.

Description

Lightning protection device for optical cable communication line

Technical Field

The utility model relates to the technical field of optical cables, in particular to a lightning protection device for an optical cable communication line.

Background

The Chinese patent with the publication number of CN209946476U discloses a lightning protection discharge level optical cable, which comprises an outer sheath, wherein aramid fibers are fixedly connected to the inside of the outer sheath, an inner sheath is fixedly connected to the inside of the aramid fibers, a water blocking layer is fixedly connected to the inside of the inner sheath, a loose tube is fixedly connected to the inside of the water blocking layer, a first filling layer is fixedly connected to one side, opposite to the water blocking layer, of the loose tube, a second filling layer is fixedly connected to the inside of the loose tube, optical fibers are fixedly connected to the inside of the second filling layer, a reinforcement is fixedly connected to the inner side of the inner sheath, and a filling member is fixedly connected to the outside of the reinforcement; the lightning protection discharge level optical cable is characterized in that an optical fiber with the diameter of 250 mu m is sleeved in a loose sleeve made of a high-modulus material by adopting a loose sleeve twisting structure, a second filling layer is filled in the loose sleeve, the loose sleeve and a filling piece are twisted into a compact cable core around a reinforcing piece, a Polyethylene (PF) inner sheath is extruded outside the cable core, then aramid fiber with the reinforcing effect is twisted, and an outer sheath is extruded finally; however, when the optical fiber ribbon is strongly twisted or bent, the adjacent optical fiber ribbons in the loose tube are easily stressed, so that the additional attenuation of the optical cable in the optical fiber ribbon is too large, and the use of the optical fiber is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lightning protection device for an optical cable communication line, which is used for carrying out buffer protection on optical fibers and aims to solve the problems in the background technology.

The technical scheme of the utility model is as follows: a lightning protection device for an optical cable communication line comprises an outer sheath, a plurality of first grounding conductors, a fireproof layer, a waterproof layer, a first signal shield, an inner shell, a reinforcing piece and a plurality of mounting assemblies;

the fireproof layer is positioned on the inner side of the outer sheath, the fireproof layer and the outer sheath have the same axle center, and a first filling layer for filling materials is formed between the fireproof layer and the outer sheath; a plurality of first ground conductors are all arranged in the first filling layer; the outer wall of the waterproof layer is connected with the inner wall of the fireproof layer, and the inner wall of the waterproof layer is connected with the first signal shield; the outer wall of the inner shell is connected with the inner wall of the first signal shield; the reinforcing piece is positioned on the inner side of the inner shell, and the reinforcing piece and the inner shell have the same axle center;

the installation components are circumferentially distributed by taking the central axis of the reinforcement as an axis, a second filling layer for injecting filling materials is formed between the installation components and the inner shell, and each installation component comprises a loose sleeve, a second signal shielding layer, a plurality of second grounding conductors, a rubber layer and an optical fiber;

the second signal shielding layer is arranged on the inner wall of the loose sleeve; the rubber layer is positioned on the inner side of the second signal shielding layer, the rubber layer is wrapped outside the optical fiber, the rubber layer and the loose sleeve are coaxial, and a third filling layer for filling a filling material is formed between the rubber layer and the second signal shielding layer; a plurality of second ground conductors are mounted within the third fill layer.

Preferably, the outer sheath is a lightning protection sleeve.

Preferably, an anti-corrosion layer is arranged outside the outer sheath.

Preferably, the material of the loose tube is modified polypropylene or polybutylene terephthalate.

Preferably, the first filling layer and the second filling layer are both filled with the elastic filler.

Preferably, the plurality of first ground conductors and the plurality of second ground conductors are copper wires.

Preferably, the outer sheath and the rubber layer are both provided with rubber shielding layers.

Preferably, the reinforcement is a non-metallic reinforcement.

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

in the embodiment, the first filling layer, the second filling layer and the third filling layer are filled, so that the optical fiber is more stably installed, when the optical cable is placed outside, lightning is protected by the outer sheath, when the optical cable is struck by lightning, the plurality of first grounding conductors and the plurality of second grounding conductors conduct electricity together, the damage to the optical fiber is reduced to the greatest extent, and meanwhile, the fireproof layer and the waterproof layer protect the optical fiber; when the optical cable is subjected to external force, the first filling layer, the third filling layer and the rubber layer buffer the external force, so that the optical fiber is protected conveniently, and the service life of the optical fiber is prolonged; in the use, signal transmission between each optic fibre is cut apart through first signal shielding and second signal shielding layer, avoids mutual influence, is favorable to improving the practicality of optic fibre.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a middle release sleeve according to an embodiment of the present invention.

Reference numerals: 1. an outer sheath; 2. a first filling layer; 3. a first ground conductor; 4. a fire barrier layer; 5. a waterproof layer; 6. a first signal mask; 7. an inner housing; 8. a second filling layer; 9. mounting the component; 91. loosening the sleeve; 92. a second signal shielding layer; 93. a second ground conductor; 94. a third filling layer; 95. a rubber layer; 96. an optical fiber; 10. a reinforcement.

Detailed Description

As shown in fig. 1-2, the lightning protection device for an optical cable communication line according to the present invention includes an outer sheath 1, a plurality of first ground conductors 3, a flame retardant layer 4, a waterproof layer 5, a first signal shield 6, an inner housing 7, a reinforcing member 10, and a plurality of mounting assemblies 9;

the outer sheath 1 is a lightning protection sleeve, and an anticorrosive layer is arranged outside the outer sheath 1; the lightning protection sleeve can reduce the frequency of the optical cable in being struck by lightning, protects the optical cable, and the anti-corrosion layer is arranged to protect the outer sheath 1, so that the service life of the outer sheath 1 is prolonged.

The fireproof layer 4 is positioned on the inner side of the outer sheath 1, the fireproof layer 4 and the outer sheath 1 are coaxial, and a first filling layer 2 for filling a filling material is formed between the fireproof layer 4 and the outer sheath 1; a plurality of first ground conductors 3 are all installed in the first filling layer 2; the outer wall of the waterproof layer 5 is connected with the inner wall of the fireproof layer 4, and the inner wall of the waterproof layer 5 is connected with the first signal shield 6; the outer wall of the inner housing 7 is connected with the inner wall of the first signal shield 6; the reinforcing piece 10 is positioned on the inner side of the inner shell 7, and the reinforcing piece 10 and the inner shell 7 are coaxial; the reinforcement 10 is a non-metallic reinforcement; the non-metallic material can improve the lightning protection effect of the device, and is favorable for prolonging the service life of the device.

The installation components 9 are circumferentially distributed by taking the central axis of the reinforcement 10 as an axis, and a second filling layer 8 for filling materials is formed between the installation components 9 and the inner shell 7; elastic fillers are filled in the first filling layer 2 and the second filling layer 8, the elasticity of the device is improved by filling the elastic fillers, and the optical fiber 96 is further protected, so that the optical fiber 96 can be used under the condition of external force, and the service life of the optical fiber 96 is prolonged; each mounting assembly 9 comprises a loose sleeve 91, a second signal shielding layer 92, a plurality of second ground conductors 93, a rubber layer 95 and an optical fiber 96; the loose sleeve 91 is made of modified polypropylene or polybutylene terephthalate, and the loose sleeve 91 made of non-metallic materials has a lightning protection effect, so that the lightning protection effect of the device is improved, and the practicability of the device is improved; the outer sheath 1 and the rubber layer 95 are both provided with rubber shielding layers, so that the shielding effect of the device is further improved, and the optical fibers 96 cannot be influenced mutually.

The second signal shielding layer 92 is mounted on the inner wall of the loose sleeve 91; the rubber layer 95 is positioned on the inner side of the second signal shielding layer 92, the rubber layer 95 is wrapped outside the optical fiber 96, the rubber layer 95 and the loose sleeve 91 are coaxial, and a third filling layer 94 for filling materials is formed between the rubber layer 95 and the second signal shielding layer 92; a plurality of second ground conductors 93 are uniformly installed in the third filling layer 94; the plurality of first ground conductors 3 and the plurality of second ground conductors 93 are copper wires, and conduct current through the copper wires, and when the optical cable is struck by lightning, the current can be conducted, so that the optical fibers 96 inside are protected, and the safety of the device is improved.

In the embodiment, the first filling layer 2, the second filling layer 8 and the third filling layer 94 are filled, so that the optical fiber 96 is more stably installed, when the optical cable is placed outside, lightning protection is performed by the outer sheath 1, when the optical cable is struck by lightning, the plurality of first grounding conductors 3 and the plurality of second grounding conductors 93 conduct electricity together, the damage of the optical fiber 96 is reduced to the greatest extent, and meanwhile, the fireproof layer 4 and the waterproof layer 5 protect the optical fiber 96; when the optical cable is subjected to an external force, the first filling layer 2, the third filling layer 94 and the rubber layer 95 buffer the external force, so that the optical fiber 96 is protected conveniently, and the service life of the optical fiber 96 is prolonged; in the use process, the first signal shielding layer 6 and the second signal shielding layer 92 are used for dividing the signal transmission among the optical fibers 96, so that mutual influence is avoided, and the practicability of the optical fibers 96 is improved.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The lightning protection device for the optical cable communication line is characterized by comprising an outer sheath (1), a plurality of first grounding conductors (3), a fireproof layer (4), a waterproof layer (5), a first signal shield (6), an inner shell (7), a reinforcing piece (10) and a plurality of mounting assemblies (9);

the fireproof layer (4) is positioned on the inner side of the outer sheath (1), the fireproof layer (4) and the outer sheath (1) are coaxial, and a first filling layer (2) for injecting filling materials is formed between the fireproof layer (4) and the outer sheath (1); a plurality of first grounding conductors (3) are all arranged in the first filling layer (2); the outer wall of the waterproof layer (5) is connected with the inner wall of the fireproof layer (4), and the inner wall of the waterproof layer (5) is connected with the first signal shield (6); the outer wall of the inner shell (7) is connected with the inner wall of the first signal shield (6); the reinforcing piece (10) is positioned on the inner side of the inner shell (7), and the reinforcing piece (10) and the inner shell (7) are coaxial;

the installation components (9) are circumferentially distributed by taking a central axis of the reinforcing piece (10) as an axis, a second filling layer (8) for injecting filling materials is formed between the installation components (9) and the inner shell (7), and each installation component (9) comprises a loose sleeve (91), a second signal shielding layer (92), a plurality of second grounding conductors (93), a rubber layer (95) and an optical fiber (96);

the second signal shielding layer (92) is arranged on the inner wall of the loose sleeve (91); the rubber layer (95) is positioned on the inner side of the second signal shielding layer (92), the rubber layer (95) is wrapped outside the optical fiber (96), the rubber layer (95) and the loose sleeve (91) are coaxial, and a third filling layer (94) for filling a filling material is formed between the rubber layer (95) and the second signal shielding layer (92); a plurality of second ground conductors (93) are uniformly mounted in the third filling layer (94).

2. A lightning protection device for an optical cable communication line according to claim 1, characterized in that the outer sheath (1) is a lightning protection sleeve.

3. A lightning protection device for optical cable communication lines according to claim 1, characterized in that the outer sheath (1) is provided with a corrosion protection layer.

4. A lightning protection device for optical cable communication lines according to claim 1, characterized in that the material of the loose sleeve (91) is modified polypropylene or polybutylene terephthalate.

5. A lightning protection device for optical cable communication lines according to claim 1, characterized in that both the first filler layer (2) and the second filler layer (8) are filled with an elastomeric filler.

6. A lightning protection device for optical fiber cable communication lines according to claim 1, characterized in that the plurality of first ground conductors (3) and the plurality of second ground conductors (93) are copper wires.

7. A lightning protection device for optical cable communication lines according to claim 1, wherein the outer sheath (1) and the rubber layer (95) are provided with rubber shielding layers.

8. A lightning protection device for optical cable communication lines according to claim 1, characterized in that the strength members (10) are non-metallic strength members.