CN211857010U

CN211857010U - Large-span aerial optical fiber ribbon optical cable

Info

Publication number: CN211857010U
Application number: CN202020521064.7U
Authority: CN
Inventors: 尹婷; 蒋宇飞; 林文武
Original assignee: Xuzhou Lint Top Cable Technology Co ltd
Current assignee: Xuzhou Lint Top Cable Technology Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-11-03
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a large-span aerial optical fiber ribbon cable, which comprises an optical fiber ribbon cable body, an aramid fiber reinforcement, a steel wire reinforcement and a loose tube, wherein the outer side of the optical fiber ribbon cable body is uniformly coated with an optical fiber ribbon cable coating, the inner side of the optical fiber ribbon cable coating sequentially comprises an outer sheath, a water blocking tape, an aramid fiber reinforcement and an inner protective layer from outside to inside, the outer sheath is wrapped on the surface of the water blocking tape, the aramid fiber reinforcement is extruded on the inner side of the water blocking tape, the aramid fiber reinforcement is wrapped on the surface of the inner protective layer, the inner part of the inner protective layer is provided with an optical fiber assembly structure, the optical fiber assembly structure comprises the loose tube, the optical fiber ribbon and a central reinforcement, the loose tube is provided with a plurality of loose tubes, the plurality of loose tubes are mutually wound together, the outer side of the loose tube is provided with a cavity, the cavity, by improving the structure of the optical cable, the tensile strength of the optical cable is increased, and the requirement of large-span overhead laying can be met.

Description

Large-span aerial optical fiber ribbon optical cable

Technical Field

The utility model relates to an optical fiber cable technical field specifically is a big span aerial fiber area optical cable.

Background

Due to the special properties of the optical fiber cable, the optical fiber cable has higher communication capacity with higher transmission rate compared with a copper cable, and particularly, due to the fact that the number of optical fiber cores of the optical fiber cable is large, the communication capacity is larger compared with other optical cables. With the continuous maturity of optical fiber and cable technology, the tendency of light entering and exiting from copper is great. The overhead optical cable is used as a main line of a communication system, and the optical cable needs to bear large tension because the overhead optical cable needs to be erected in a suspended mode. In order to reduce the pulling force borne by the optical cable during aerial laying and ensure the long-term safe and stable operation of the optical cable, the optical cable can only be laid in short distance and small span during aerial installation, and corresponding optical devices and erection towers are required between each section of the optical cable, so that the overall cost is undoubtedly increased. Therefore, the large-span aerial optical fiber ribbon optical cable is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a large-span aerial optical fiber ribbon cable, which comprises an optical fiber ribbon cable body, an aramid fiber reinforcement, a steel wire reinforcement and a loose tube, wherein the outer side of the optical fiber ribbon cable body is uniformly coated with an optical fiber ribbon cable coating, the inner side of the optical fiber ribbon cable coating sequentially comprises an outer sheath, a water blocking tape, an aramid fiber reinforcement and an inner protective layer from outside to inside, the outer sheath is wrapped on the surface of the water blocking tape, the aramid fiber reinforcement is extruded on the inner side of the water blocking tape, the aramid fiber reinforcement is wrapped on the surface of the inner protective layer, an optical fiber assembly structure is arranged inside the inner protective layer, the optical fiber assembly structure comprises a loose tube, an optical fiber ribbon and a central reinforcement, the loose tube is provided with a plurality of loose tubes which are mutually wound together, the outer side of the loose tube is provided with a cavity, and the cavity separates the, and the central reinforcing piece and the outer side of the cavity are both coated with insulating shielding layers.

As an optimized technical scheme of the utility model, the inside of oversheath is equipped with four steel wire reinforcements, and four the steel wire reinforcement is arranged in respectively all around of oversheath.

As an optimal technical scheme of the utility model, loose sheathed tube inside is equipped with the insulation shielding layer, the insulation shielding layer thickness all does not exceed 1.4 mm.

As an optimized technical scheme of the utility model, the inboard crowded package of interior sheath has conductive shielding layer, conductive shielding layer thickness all does not exceed 1.4 mm.

As an optimal technical scheme of the utility model, the inside of center reinforcement is equipped with steel wire and filler, the filler wraps up the steel wire in inside.

As an optimized technical scheme of the utility model, waterproof sealant is all scribbled to the surface and the internal surface of water-blocking tape, waterproof sealant is made by the silicone grease material.

As a preferred technical scheme of the utility model, the loose tube adopts polybutylene terephthalate (PBT) to prepare and form.

As a preferred technical scheme of the utility model, cavity outside structure is rice style of calligraphy, just the cavity separates loose sleeve pipe and central reinforcement mutually independent.

The utility model has the advantages that: this patent is through novel optical fiber ribbon optical cable structure, has solved the stretching resistance problem when present aerial optical cable lays. Through improving optical fiber ribbon optical cable structure, greatly increased the stretching resistance of optical cable, make it can not lead to inside optical fiber ribbon fracture to influence communication transmission because the intensity of optical cable itself is not enough when aerial laying, really realize that big length, big span are aerial to be laid, reduced the use of optical device and erect the tower in whole communication system, effectively reduced overall cost.

Drawings

Fig. 1 is a schematic structural view of a large-span aerial optical fiber ribbon cable according to the present invention;

fig. 2 is a schematic view of the internal structure of a large-span aerial optical fiber ribbon cable according to the present invention;

fig. 3 is a schematic cross-sectional view of a large span aerial optical fiber ribbon cable according to the present invention;

fig. 4 is a schematic view of the cross-sectional internal structure of a large-span aerial optical fiber ribbon cable of the present invention.

In the figure: 1. an optical fiber ribbon cable body; 2. optical fiber ribbon cable coatings; 3. an optical fiber assembly structure; 4. an outer sheath; 5. a water blocking tape; 6. an aramid reinforcement; 7. an inner protective layer; 8. a steel wire reinforcement; 9. loosening the sleeve; 10. an optical fiber ribbon; 11. a central reinforcement; 12. a cavity.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-4, the utility model relates to a large-span aerial optical fiber ribbon cable, which comprises an optical fiber ribbon cable body 1, an aramid fiber reinforcement 6, a steel wire reinforcement 8 and a loose tube 9, wherein the outer side of the optical fiber ribbon cable body 1 is uniformly coated with an optical fiber ribbon cable coating 2, the inner side of the optical fiber ribbon cable coating 2 sequentially comprises an outer sheath 4, a water blocking tape 5, an aramid fiber reinforcement 6 and an inner protection layer 7 from outside to inside, the outer sheath 4 is wrapped on the surface of the water blocking tape 5, the aramid fiber reinforcement 6 is extruded on the inner side of the water blocking tape 5, the aramid fiber reinforcement 6 is wrapped on the surface of the inner protection layer 7, an optical fiber assembly structure 3 is arranged inside the inner protection layer 7, the optical fiber assembly structure 3 comprises a loose tube 9, an optical fiber ribbon 10 and a central reinforcement 11, the loose tube 9 is provided with a plurality of loose tubes 9, and a plurality of loose tubes 9 are mutually wound together, the outer side, the central reinforcement 11 and the outer side of the cavity 12 are both covered with an insulating shielding layer.

Wherein, the inside of oversheath 4 is equipped with four steel wire reinforcements 8, and four steel wire reinforcements 8 are arranged in respectively around the oversheath 4, are equipped with four steel wire reinforcements through the inside of oversheath, have increased optical cable tensile strength, can satisfy the requirement of big span overhead laying.

Wherein, loose inside of sleeve pipe 9 is equipped with the insulation shield layer, and the insulation shield layer thickness all is not more than 1.4mm, is equipped with the insulation shield layer in loose inside of sleeve pipe and makes between its cable not mutual contact, avoids appearing signal interference.

Wherein, the inboard crowded package of interior sheath 7 has conductive shielding layer, and conductive shielding layer thickness all does not exceed 1.4mm, has the mutual influence that conductive shielding layer has avoided the shielding layer including the inboard crowded package of sheath, has improved shielding effect greatly.

Wherein, the inside of central reinforcement 11 is equipped with steel wire and filler, and the filler is inside with the steel wire parcel, makes its toughness, elasticity further strengthen through the inside steel wire and the filler that are equipped with of central reinforcement.

The waterproof sealant is coated on the outer surface and the inner surface of the water-blocking tape 5 and is made of silicone materials, and the waterproof sealant is coated on the outer surface and the inner surface of the water-blocking tape, so that the waterproof function of the water-blocking tape is stronger.

The loose tube 9 is made of polybutylene terephthalate PBT, and the loose tube is made of polybutylene terephthalate PBT, so that the PBT has good performances of solvent resistance, oil resistance, chemical corrosion resistance and the like, and has high crystallinity.

Wherein, cavity 12 outside structure is rice style of calligraphy, and cavity 12 is independent each other with loose sleeve pipe 9 and central reinforcement 11 separately, through being equipped with the cavity in signal transmission process, has effectually reduced the crosstalk between each other of wire pair, has solved the problem at transmission signal distortion.

The working principle is as follows: whether the device is normal or not is firstly checked, and when the device is checked, the optical fiber ribbon cable body 1 needs to bear large pulling force due to the fact that the device needs to be erected in a suspended mode. In order to reduce the tensile force born by the optical fiber ribbon optical cable body 1 during aerial laying and ensure the long-term safe and stable operation of the optical cable, the improvement is made, four steel wire reinforcements 8 are arranged in the outer sheath 4, the four steel wire reinforcements 8 are respectively arranged around the outer sheath 4, the four steel wire reinforcements are arranged in the outer sheath 4, the tensile strength of the optical cable is increased, the requirement of large-span aerial laying can be met, the conductive shielding layer is extruded and coated on the inner side of the inner sheath 7, the thickness of the conductive shielding layer is not more than 1.4mm, the conductive shielding layer is extruded and coated on the inner side of the inner sheath 7, the mutual influence of the shielding layers is avoided, the shielding effect is greatly improved, the insulating shielding layer is arranged in the loose tube 9, the thickness of the insulating shielding layer is not more than 1.4mm, the insulating shielding layer is arranged in the loose tube 9, so that the cables are not mutually contacted, the inside of central reinforcement 11 is equipped with steel wire and filler, and the filler wraps up the steel wire in inside, is equipped with steel wire and filler through the inside of central reinforcement 11 and makes its toughness, elasticity further strengthen, simultaneously through being equipped with cavity 12 in signal transmission process, the effectual crosstalk that reduces the wire pair each other has solved the problem at transmission signal distortion.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-span aerial optical fiber ribbon cable comprises an optical fiber ribbon cable body (1), an aramid fiber reinforcement (6), a steel wire reinforcement (8) and a loose tube (9), and is characterized in that the outer side of the optical fiber ribbon cable body (1) is uniformly coated with an optical fiber ribbon cable coating (2), the inner side of the optical fiber ribbon cable coating (2) sequentially comprises an outer sheath (4), a water blocking tape (5), an aramid fiber reinforcement (6) and an inner protection layer (7) from outside to inside, the outer sheath (4) is wrapped on the surface of the water blocking tape (5), the aramid fiber reinforcement (6) is extruded on the inner side of the water blocking tape (5), the aramid fiber reinforcement (6) is wrapped on the surface of the inner protection layer (7), an optical fiber assembly structure (3) is arranged inside the inner protection layer (7), the optical fiber assembly structure (3) comprises the loose tube (9), the optical fiber ribbon (10) and a central reinforcement (11), pine sleeve pipe (9) are equipped with many, and many pine sleeve pipe (9) intertwine together, the outside of pine sleeve pipe (9) is equipped with cavity (12), just cavity (12) are independent each other with pine sleeve pipe (9) and central reinforcement (11) and are separated, the outside of central reinforcement (11) and cavity (12) is all pasted and is covered with the insulating shielding layer.

2. A large span overhead optical fiber ribbon cable according to claim 1, wherein four steel wire reinforcements (8) are provided inside the outer sheath (4), and the four steel wire reinforcements (8) are respectively disposed around the outer sheath (4).

3. A large span overhead optical fiber ribbon cable according to claim 1, wherein the loose tube (9) is provided with an insulation shielding layer inside, and the thickness of the insulation shielding layer is not more than 1.4 mm.

4. A large span aerial optical fiber ribbon cable according to claim 1, wherein the inner sheath (7) is extruded with a conductive shielding layer on the inner side, and the thickness of the conductive shielding layer is not more than 1.4 mm.

5. A large span overhead optical fiber ribbon cable according to claim 1, wherein the central strength member (11) is provided with steel wires and filler inside, and the filler wraps the steel wires inside.

6. The large-span aerial optical fiber ribbon cable according to claim 1, wherein the outer surface and the inner surface of the water-blocking tape (5) are coated with a waterproof sealant, and the waterproof sealant is made of a silicone grease material.

7. A large span overhead optical fiber ribbon cable according to claim 1, wherein the loose tube (9) is made of polybutylene terephthalate (PBT).

8. A large span aerial optical fiber ribbon cable according to claim 1, wherein the outside structure of the cavity (12) is in a shape of a Chinese character mi.