CN211375148U

CN211375148U - Intensive central tube structure and optical cable

Info

Publication number: CN211375148U
Application number: CN201922253419.9U
Authority: CN
Inventors: 计忠华
Original assignee: Jiangsu Etern Co Ltd
Current assignee: Jiangsu Etern Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-28
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses an intensive center tube structure and optical cable, the intensive center tube structure comprises a loose tube, a plurality of optical fiber binding bands are stacked in the loose tube, the optical fiber binding bands are formed by a plurality of optical fiber bundles through the combined resin curing, the optical fiber bundles are horizontally arranged, and two adjacent optical fiber bundles are closely attached; intensive center tube optical cable includes above-mentioned intensive center tube outer in proper order the cladding have enhancement layer and restrictive coating the restrictive coating inlay in the restrictive coating and be equipped with the reinforcement, the utility model discloses after will gathering optic fibre, carry out the optic fibre bundle and take the processing again, a plurality of optic fibre bundles are horizontal arrangement, and two adjacent optic fibre bundles closely laminate the setting, make unit area's optical fiber density bigger, put more optic fibre in limited center tube, improve the optic fibre duty cycle in the center tube, make the optical cable external diameter after the stranding thinner, communication pipeline resource obtains more efficient utilization.

Description

Intensive central tube structure and optical cable

Technical Field

The utility model relates to an optical cable manufacturing field, concretely relates to intensive center tube structure and optical cable.

Background

At present, the communication industry in China is developed at a high speed, and under the guidance of a broadband Chinese strategy, the construction of a 'full optical network' is strongly promoted, 4G networks are completely and deeply developed, 5G networks are gradually developed, and China enters a high-speed channel for information development. With the arrival of a big data era, cloud computing data centers, intelligent buildings and the application of the internet of things, core trunk networks, local area networks, access networks and machine rooms of optical fiber communication put forward higher requirements on the fiber core capacity of optical cables, and more optical cables with large core number are applied to meet the requirements of continuously increasing information transmission quantity and rapidly developing urban broadband network construction.

The large-core-number optical cable with small outer diameter, large fiber capacity, convenient construction and maintenance and small attenuation loss can effectively relieve the pipeline resource shortage caused by the expansion of the urban communication pipe network, meet the requirement of the continuously increased high-density optical fiber core number and greatly improve the utilization rate of the fiber core.

In order to further increase the optical fiber capacity in the ferrule, the optical fibers are bundled in the prior art, but the existing optical fiber bundles are distributed in a scattered manner in the ferrule, a gap exists between the optical fiber bundles in the ferrule, and the space ratio of the optical fiber bundles in the ferrule is low.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an intensive center tube structure and optical cable, the optic fibre and the area that will gather the beam are handled, make unit area's optical fiber density bigger, put more optic fibre in limited center tube, make the optical cable external diameter after the stranding thinner, and the communication pipeline resource obtains more efficient utilization.

In order to solve the technical problem, the utility model provides an intensive center tube structure, including the pine sleeve pipe, it is provided with a plurality of optical fiber belts to pile up in the pine sleeve pipe, the optical fiber belt is through taking resin curing molding by many fiber bundles, the fiber bundle is horizontal arrangement, and two adjacent fiber bundles closely laminate the setting.

The utility model discloses a preferred embodiment, further include the optic fibre bundle is passed through resin solidification shaping tied in a bundle by many optic fibres, many optic fibre close packing forms the optic fibre bundle, the resin tied in a bundle with it is incompatible with the ribbon resin.

In a preferred embodiment of the present invention, the optical fiber bundle further comprises a plurality of optical fiber bundles.

In a preferred embodiment of the present invention, the optical fiber bundle further comprises 6 to 24 optical fibers disposed therein.

The utility model discloses a preferred embodiment, further include the pine cover intussuseption is filled with fine oleamen.

In a preferred embodiment of the present invention, the flatness of the optical fiber band is 35-50 um.

In order to solve the technical problem, the utility model also provides an intensive center tube optical cable, including above-mentioned intensive center tube outside of tubes in proper order the cladding have enhancement layer and restrictive coating the embedded reinforcement that is equipped with in the restrictive coating.

The utility model discloses a preferred embodiment, further include the enhancement layer is steel band, the aluminium strip of indulging the package or the armor steel wire of transposition outside intensive center tube.

The present invention further provides a method for manufacturing a cable sheath, which comprises forming a first FRP reinforcement and a second FRP reinforcement along a long axis of the sheath layer, wherein the first FRP reinforcement and the second FRP reinforcement are symmetrically disposed along the long axis of the sheath layer.

In a preferred embodiment of the present invention, the sheath layer is made of low smoke zero halogen sheath material.

The utility model has the advantages that: the utility model discloses after will gathering optic fibre, carry out optic fibre bundle and take the processing again, a plurality of optic fibre bundles are the horizontal arrangement, and two adjacent optic fibre bundles closely laminate the setting, make unit area's optical fiber density bigger, put more optic fibre in limited center tube, improve the optic fibre duty cycle in the center tube, make the optical cable external diameter after the stranding thinner, the communication pipeline resource obtains more efficient utilization.

Drawings

FIG. 1 is a schematic structural view of a dense center tube according to the present invention;

fig. 2 is a schematic structural view of an optical fiber bundle of the present invention;

fig. 3 is a schematic structural diagram of the intensive central tube optical cable of the present invention.

The reference numbers in the figures illustrate: 1. loosening the sleeve; 2. a fiber optic tether; 3. a fiber optic bundle; 31. an optical fiber; 32. bundling resin; 4. carrying resin; 5. a reinforcing layer; 6. a sheath layer; 7. a reinforcement.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Example one

Referring to fig. 1-2, the utility model discloses an embodiment of intensive center tube structure, including loose tube 1, pile up in the loose tube 1 and be provided with a plurality of optic fibre bands 2, optic fibre band 2 is through and take resin 4 solidification moulding by many optic fibre bundles 3, optic fibre bundle 3 is horizontal arrangement, and two adjacent optic fibre bundles 3 closely laminate the setting, after ending optic fibre 31 earlier, carry out optic fibre bundle 3 again and take the processing, and a plurality of optic fibre bundles 3 are horizontal arrangement, and two adjacent optic fibre bundles 3 closely laminate the setting, make unit area's optic fibre 31 density bigger, put more optic fibre 31 in limited loose tube 1, improve the optic fibre 31 duty cycle in the loose tube 1.

Referring to fig. 2, the optical fiber bundle 3 is formed by curing a plurality of optical fibers 31 with a bundling resin 32, and the optical fibers 31 are tightly packed to form the optical fiber bundle 3, i.e. the cross-section of the optical fibers 31 tends to be as close as possible, i.e. more optical fibers 31 are accommodated in the smallest space, and the diameter of the optical fiber bundle 3 is reduced as much as possible.

Specifically, the bundling resin 32 and the ribbon bonding resin 4 in this embodiment are made of two incompatible materials, and the incompatible bundling resin 32 and the ribbon bonding resin 4 are easily separated during use, so that each optical fiber bundle 3 can be easily peeled from the optical fiber ribbon 2.

Specifically, the colour of the tow 3 in every tow band 2 is different, can be provided with 6 ~ 12 tow 3 in the tow band 2 side by side, tow 3 arranges in proper order according to the standard chromatogram (blue, orange, green, brown, grey, white, red, black, yellow, purple, pink, blue green) of optical cable, sets up different tow 3 colours, is convenient for distinguish tow 3 in the butt fusion.

Specifically, according to actual user demand, 4 ~ 12 layers of optical fiber band 2 can be piled up in loose sleeve 1, be provided with 6 ~ 24 optic fibre 31 in the optical fiber band 3.

In this embodiment, 12 optical fibers 31 are disposed in each optical fiber bundle 3, 12 optical fiber bundles 3 are disposed in each optical fiber bundle 2, 12 optical fiber bundles 2 are stacked in a loose tube 1, and a total of 1728 optical fibers 31 are accommodated in the loose tube 1.

Specifically, can level and smooth when piling up in order to guarantee that optic fibre band 2 from piling up, prevent skew between the optic fibre band 2 that piles up, optic fibre band 2's roughness is 35 ~ 50um

Specifically, the loose tube 1 is filled with fiber ointment, and the fiber ointment plays a water-blocking role in the loose tube 1 on one hand and plays a buffer protection role for the optical fiber binding band 2 on the other hand.

Example two

Referring to fig. 3, the utility model discloses an embodiment of intensive center tube optical cable, above-mentioned intensive center tube outward in proper order the cladding have enhancement layer 5 and restrictive coating 6 the embedded reinforcement 7 that is equipped with of restrictive coating 6 adopts foretell intensive center tube, and under the condition of the same optic fibre 31 quantity, the intensive center tube optical cable of this embodiment is thinner, and at the downthehole optic fibre 31 of more of putting of limited pipeline, communication pipeline resource obtains more efficient utilization.

Specifically, the reinforcing layer 5 is a longitudinally-wrapped steel belt, an aluminum belt or an armored steel wire twisted outside the intensive center tube, and the reinforcing layer 5 can improve the lateral pressure resistance of the optical cable.

Preferably, the reinforcing member 7 is made of FRP (fiber reinforced plastic), namely, a non-metal reinforcing member 7, the reinforcing member 7 includes a first FRP reinforcing member 7 and a second FRP reinforcing member 7, and the first FRP reinforcing member 7 and the second FRP reinforcing member 7 are symmetrically arranged along the long axis of the sheath layer, wherein the FRP has the advantages of light weight, high strength, good corrosion resistance, good electric heating performance, good designability, good manufacturability and the like, so that the tensile property of the optical cable is improved, and the first FRP reinforcing member 7 and the second FRP reinforcing member 7 are symmetrically arranged, so that the same stress at two sides of the optical cable is ensured, and the optical cable is prevented from being bent due to the influence of the stress of the reinforcing member 7.

Preferably, the sheath layer 6 is a low smoke zero halogen polyolefin sheath molded with a low smoke zero halogen polyolefin material (LSZH). The LSZH material is adopted, so that the sheath layer 6 has the advantages of high flame retardance, low shrinkage, low temperature resistance, high temperature resistance, corrosion resistance, sunlight irradiation resistance, aging resistance, cracking resistance, environmental protection, uniform color, proper hardness, easiness in processing, bending resistance, high thin-wall processing, strength, rat bite prevention, low cost price and the like.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides an intensive center tube structure, includes the pine sleeve pipe, its characterized in that, it is provided with a plurality of fiber optic bridles to pile up in the pine sleeve pipe, the fiber optic bridle is through taking resin curing moulding by many fiber bundles, the fiber bundle is horizontal arrangement, and two adjacent fiber bundles closely laminate the setting.

2. The dense central tube structure according to claim 1, wherein the optical fiber bundle is formed by curing a bundled resin from a plurality of optical fibers, the plurality of optical fibers are closely packed to form the optical fiber bundle, and the bundled resin is incompatible with the ribbon resin.

3. The dense center tube structure of claim 1, wherein the optical fiber bundles within each optical fiber bundle band are different colors.

4. The dense central tube structure according to claim 1, wherein 6 to 24 optical fibers are arranged in the optical fiber bundle.

5. The dense central tube structure of claim 1, wherein said loose tube is filled with a fiber cement.

6. The dense center tube structure of claim 1, wherein the flatness of the optical fiber ribbon is 35-50 um.

7. A dense central tube optical cable is characterized by comprising the dense central tube according to any one of claims 1 to 6, wherein a reinforcing layer and a sheath layer are sequentially wrapped outside the dense central tube, and a reinforcing member is embedded in the sheath layer.

8. A dense center tube optical cable as claimed in claim 7, wherein said reinforcing layer is a longitudinally wrapped steel tape, an aluminum tape or an armor steel wire twisted outside the dense center tube.

9. A dense center tube cable as recited in claim 7, wherein said strength members comprise first FRP strength members and second FRP strength members, said first FRP strength members and said second FRP strength members being symmetrically disposed along the long axis of said jacket layer.

10. The dense center tube optical cable of claim 7, wherein the jacket layer is made of a low smoke zero halogen jacket material.