CN213069262U

CN213069262U - Optical fiber bundle tube and optical cable

Info

Publication number: CN213069262U
Application number: CN202021643252.3U
Authority: CN
Inventors: 龚成; 王秋萍; 刘成; 黄光年; 徐海斌; 刘鹏
Original assignee: Jiangxi Changtian Optical Communication Co ltd
Current assignee: Jiangxi Changtian Optical Communication Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-04-27
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses an optical fiber bundle pipe, including fan-shaped beam tube, fan-shaped beam tube is intraductal to be equipped with many colored optic fibre, it has the fine cream that the cladding lived colored optic fibre still to fill in the fan-shaped beam tube. An optical cable comprises a central reinforcing member, wherein a plurality of optical fiber bundle tubes are attached to the outer wall of the central reinforcing member, the inner arc surfaces of a plurality of fan-shaped bundle tubes are attached to the outer wall of the central reinforcing member and completely wrap the outer wall of the central reinforcing member, the side wall surface of any fan-shaped bundle tube is attached to the side wall surface of the adjacent fan-shaped bundle tube, and an armor layer is sleeved outside the outer arc surface of the fan-shaped bundle tube. In this way, the utility model discloses optical fiber bundle pipe and optical cable can make unit area's optical fiber density bigger, and the cable cream quantity that blocks water is few, reduces the optical cable external diameter, can hold more optic fibre, make full use of resource in limited optical cable laying pipe.

Description

Optical fiber bundle tube and optical cable

Technical Field

The utility model relates to an optical cable field especially relates to an optical fiber bundle pipe and optical cable.

Background

With the arrival of big data, cloud computing and artificial intelligence in the 5G era, optical fiber communication plays a significant role in human development by virtue of low delay and large-capacity transmission advantages. The more and more optical cables with large core number, high performance and small outer diameter are applied to core networks, local area networks and access networks. Therefore, the improvement of the optical fiber density per unit area, the reduction of the outer diameter of the optical cable and the reduction of the cost of the optical cable become the primary technical innovation of optical cable manufacturers.

In the traditional optical cable, optical fiber bundle tubes are round and optical cable elements are twisted, so that much space in the optical cable is wasted, and meanwhile, water blocking cable paste needs to be filled in redundant space to achieve the water blocking effect while the optical cable requires water blocking, so that the production cost of optical cable manufacturers is increased.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides an optical fiber bundle pipe and optical cable, can make unit area's optical fiber density bigger, and the cable cream quantity that blocks water is few, reduces the optical cable external diameter, can hold more optic fibre, make full use of resource in limited optical cable laying pipeline.

In order to solve the technical problem, the utility model discloses a technical scheme be: the optical fiber bundle tube comprises a fan-shaped bundle tube, wherein a plurality of colored optical fibers are arranged in the fan-shaped bundle tube, and fiber paste for coating the colored optical fibers is filled in the fan-shaped bundle tube.

In a preferred embodiment of the present invention, the colored fibers are sequentially arranged at intervals to form two sets of arc-shaped arrays.

In a preferred embodiment of the present invention, the fan-shaped bundle tube is made of PBT.

For solving the technical problem, the utility model discloses a another technical scheme is: the optical cable comprises a central reinforcing part, wherein a plurality of optical fiber bundle tubes are attached to the outer wall of the central reinforcing part, the inner arc surfaces of the fan-shaped bundle tubes are attached to the outer wall of the central reinforcing part and completely wrap the outer wall of the central reinforcing part, the side wall surface of any fan-shaped bundle tube is attached to the side wall surface of the adjacent fan-shaped bundle tube, and an armor layer is sleeved outside the outer arc surface of the fan-shaped bundle tube.

In a preferred embodiment of the present invention, the optical fiber bundle tube is wound with a binding yarn.

In a preferred embodiment of the present invention, the armor layer is longitudinally wrapped outside the binder yarn, and a water blocking cable paste is filled between the optical fiber bundle tube and the armor layer.

In a preferred embodiment of the present invention, the armor layer is coated with a cable sheath layer.

In a preferred embodiment of the present invention, the number of the optical fiber bundle tubes is 4.

The utility model has the advantages that: the utility model discloses optical fiber bundle pipe and optical cable can make unit area's optical fiber density bigger, and the cable cream quantity that blocks water is few, reduces the optical cable external diameter, can hold more optic fibre, make full use of resource in limited optical cable laying pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural view of a preferred embodiment of the optical cable of the present invention;

FIG. 2 is a schematic diagram of a fiber optic bundle tube;

the parts in the drawings are numbered as follows: 1. the optical fiber cable comprises a central reinforcing piece, 2, an optical fiber bundle tube, 21, a fan-shaped bundle tube, 22, a colored optical fiber, 23, fiber paste, 24, an inner arc surface, 25, an outer arc surface, 26, a side wall, 3, binding yarns, 4, an armor layer, 5, water-blocking cable paste and 6, an optical cable sheath layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an optical cable includes a central strength member 1, a plurality of optical fiber bundle tubes 2 are attached to an outer wall of the central strength member 1, each optical fiber bundle tube 2 includes a fan-shaped bundle tube 21, a plurality of colored optical fibers 22 are disposed in the fan-shaped bundle tube 21, a fiber paste 23 covering the colored optical fibers 22 is filled in the fan-shaped bundle tube 21, inner arc surfaces 24 of the fan-shaped bundle tubes 21 are attached to the outer wall of the central strength member 1 and completely wrap the outer wall thereof, a side wall surface 26 of any fan-shaped bundle tube 21 is attached to a side wall surface of an adjacent fan-shaped bundle tube 21, and an armor layer 4 is sleeved outside an outer arc surface 25 of the fan-shaped bundle tube 21. The inner cambered surfaces 24 of the fan-shaped beam tubes 21 with the same specification can be combined into a circle and tightly combined with the inner central reinforcement part 1 to achieve the effect of reducing the inner structural space of the optical cable, the outer cambered surfaces 25 of the fan-shaped optical fiber beam tubes 21 with the same specification can be combined into a circle and tightly contacted with the metal armor layer 7 to achieve the effect of reducing the inner structural space of the optical cable, and the fan-shaped beam tubes 21 are in surface contact with each other to improve the optical fiber density in unit area.

In addition, the colored fibers 22 are sequentially arranged at intervals to form two groups of arc-shaped arrays.

The fan-shaped bundle tube 21 is made of PBT (polybutylene terephthalate).

In addition, the binding yarn 3 is wound between the optical fiber bundle tubes 2, and the binding yarn 3 is used for binding the fan-shaped bundle tube 21, mainly preventing the fan-shaped bundle tube 21 from loosening.

In addition, the armor layer 4 is longitudinally wrapped outside the binding yarn 3, and the space between the optical fiber bundle tube 2 and the armor layer 4 is filled with the water blocking cable paste 5. The usage amount of the water-blocking cable paste 3 can be greatly reduced because the fan-shaped beam tube 21 structure in the optical cable causes no space waste in the whole optical cable

In addition, the outer side of the armor layer 4 is coated with an optical cable sheath layer 6, and the optical cable sheath layer 6 is made of polyethylene or low-smoke halogen-free polyolefin sheath material.

The number of the optical fiber bundle tubes 2 is preferably 4, and may be 2, 3, 5 or more as needed.

The optical cable of the application can increase the density of the optical fiber by 20 ˜ 30% in a unit area and reduce the use amount of the optical cable water-blocking cable paste by 65 ˜ 80%.

Be different from prior art, the utility model discloses optical fiber bundle pipe and optical cable can make unit area's optical fiber density bigger, and the cable cream quantity that blocks water is few, reduces the optical cable external diameter, can hold more optic fibre, make full use of resource in limited optical cable laying pipe.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The optical fiber bundle tube is characterized by comprising a fan-shaped bundle tube, wherein a plurality of colored optical fibers are arranged in the fan-shaped bundle tube, and fiber paste for coating the colored optical fibers is filled in the fan-shaped bundle tube.

2. The fiber optic tube of claim 1, wherein the colored fibers are sequentially spaced to form two arcuate arrays.

3. The optical fiber bundle tube of claim 2, wherein the fan-shaped bundle tube is made of PBT.

4. An optical cable, comprising a central reinforcing member, wherein a plurality of optical fiber bundle tubes as claimed in any one of claims 1 to 3 are attached to an outer wall of the central reinforcing member, inner curved surfaces of a plurality of fan-shaped bundle tubes are attached to and completely wrap the outer wall of the central reinforcing member, a side wall surface of any one fan-shaped bundle tube is attached to a side wall surface of an adjacent fan-shaped bundle tube, and an armor layer is sheathed outside the outer curved surface of the fan-shaped bundle tube.

5. The fiber optic cable of claim 4, wherein a binder yarn is wrapped between the fiber bundle tubes.

6. The optical cable of claim 5, wherein the armor layer is wrapped longitudinally outside the binder yarns, and a water blocking paste is filled between the optical fiber bundle tube and the armor layer.

7. A cable as claimed in claim 6, wherein the exterior of the armour layer is coated with a cable jacket layer.

8. Optical cable according to any of claims 4 to 7, wherein the number of optical fibre bundle tubes is 4.