CN215895056U

CN215895056U - Durable loose-sleeve layer-stranded optical cable

Info

Publication number: CN215895056U
Application number: CN202122378406.1U
Authority: CN
Inventors: 杜长军; 李新华
Original assignee: Dongguan Tw Scie Co ltd
Current assignee: Dongguan Tw Scie Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-22
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a durable loose tube layer stranded optical cable which comprises a central reinforcing piece, a cushion layer, a plurality of optical fiber units, a first water-blocking tape layer, an armor layer, a second water-blocking tape layer, an outer sheath and a weather-resistant coating, wherein the central reinforcing piece is arranged on the cushion layer; the cushion layer is coated outside the central reinforcing piece; the optical fiber units are uniformly wound on the periphery of the cushion layer, each optical fiber unit comprises a sleeve and a plurality of optical fibers, the sleeve is filled with fiber paste, and the optical fibers are arranged in the sleeve and embedded in the fiber paste; the first water-blocking tape layer covers the optical fiber units, and cable paste is filled between the first water-blocking tape layer and the cushion layer. Set up first band layer and the second band layer that blocks water through the cooperation to realize dual blocking water, effectively promote the waterproof performance of product, thereby improve signal transmission quality, set up simultaneously and wait the coating, can improve product weatherability greatly, more durable of product is difficult for ageing, long service life.

Description

Durable loose-sleeve layer-stranded optical cable

Technical Field

The utility model relates to the technical field of optical cables, in particular to a durable loose tube layer stranded optical cable.

Background

Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission.

The loose-tube stranded optical cable is one of the main structural forms of the existing optical cable, and generally comprises a central reinforcing member, a cushion layer, an optical fiber unit, an armor layer and a sheath layer. However, the loose tube layer stranded optical cable with the structure has poor waterproof performance, is not durable, is easy to age and has short service life. Therefore, there is a need to develop a solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a durable loose-tube stranded optical cable, which can effectively solve the problems of poor waterproof performance, poor durability, easy aging and short service life of the existing loose-tube stranded optical cable.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a durable loose-tube stranded optical cable comprises a central reinforcement, a cushion layer, a plurality of optical fiber units, a first water-blocking tape layer, an armor layer, a second water-blocking tape layer, an outer sheath and a weather-resistant coating; the cushion layer is coated outside the central reinforcing piece; the optical fiber units are uniformly wound on the periphery of the cushion layer, each optical fiber unit comprises a sleeve and a plurality of optical fibers, the sleeve is filled with fiber paste, and the optical fibers are arranged in the sleeve and embedded in the fiber paste; the first water-blocking tape layer covers the optical fiber units, cable paste is filled between the first water-blocking tape layer and the cushion layer, and the optical fiber units are embedded in the cable paste; the armor layer is coated outside the first water-blocking tape layer; the second water-blocking tape layer is coated outside the armor layer; the outer sheath is coated outside the second waterproof belt layer; the weather-resistant coating is coated outside the outer sheath.

Preferably, the central reinforcing member is a single metal steel wire central reinforcing core.

Preferably, the cushion layer is made of PE.

Preferably, the first water-blocking tape layer and the second water-blocking tape layer are both semiconductor water-blocking tapes.

Preferably, the armor layer is a plastic-coated corrugated steel strip or an aluminum strip.

As a preferable scheme, the outer sheath is made of PE.

Preferably, the number of the optical fiber units is 2-144.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:

set up first band layer and the second band layer that blocks water through the cooperation to realize dual blocking water, effectively promote the waterproof performance of product, thereby improve signal transmission quality, set up simultaneously and wait the coating, can improve product weatherability greatly, more durable of product, difficult ageing, life is longer.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. center reinforcement 20, cushion layer

30. Optical fiber unit 31 and ferrule

32. Optical fiber 33 and fiber paste

40. First water-blocking tape layer 50 and armor layer

60. A second water-blocking tape layer 70 and an outer sheath

80. Weather-resistant coating 90, cable paste.

Detailed Description

Referring to fig. 1, a specific structure of a preferred embodiment of the present invention is shown, which includes a central reinforcing member 10, a cushion layer 20, a plurality of optical fiber units 30, a first water-blocking tape layer 40, an armor layer 50, a second water-blocking tape layer 60, an outer sheath 70 and a weather-resistant coating 80.

The central reinforcement 10 is a single metal steel wire central reinforcing core, the cushion layer 20 is coated outside the central reinforcement 10, and the cushion layer 20 is made of PE material.

The plurality of optical fiber units 30 are uniformly wound around the periphery of the cushion layer 20, each optical fiber unit 30 includes a sleeve 31 and a plurality of optical fibers 32, the sleeve 31 is filled with a fiber paste 33, and the plurality of optical fibers 32 are disposed in the sleeve 31 and embedded in the fiber paste 33, so that the optical fibers 32 are well protected. The number of the optical fiber units 30 is 2-144, and in this embodiment, the number of the optical fiber units 30 is 12, which is not limited.

The first water-blocking tape layer 40 covers the plurality of optical fiber units 30, cable paste 90 is filled between the first water-blocking tape layer 40 and the cushion layer 20, and the plurality of optical fiber units 30 are embedded in the cable paste 90; the armor layer 50 is coated outside the first water-blocking tape layer 40; the second water-blocking tape layer 60 is coated outside the armor layer 50; the outer sheath 70 covers the second water-blocking tape layer 60; the weather-resistant coating 80 is coated outside the outer sheath 70. In this embodiment, the first water-blocking tape layer 40 and the second water-blocking tape layer 60 are both semiconductor water-blocking tapes, the armor layer 50 is a plastic-coated corrugated steel tape or an aluminum tape, and can provide strong tensile force and flattening force, and the outer sheath 70 is made of PE and has good rigidity and ultraviolet radiation performance.

The product can be used for outdoor overhead, pipeline laying, transmission equipment (data processing equipment connection) and large core number wiring of a data center, and has wide application range.

The design of the utility model is characterized in that: set up first band layer and the second band layer that blocks water through the cooperation to realize dual blocking water, effectively promote the waterproof performance of product, thereby improve signal transmission quality, set up simultaneously and wait the coating, can improve product weatherability greatly, more durable of product, difficult ageing, life is longer.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a durable type pine cover layer strand optical cable which characterized in that: the waterproof cable comprises a central reinforcing piece, a cushion layer, a plurality of optical fiber units, a first waterproof belt layer, an armor layer, a second waterproof belt layer, an outer sheath and a weather-resistant coating; the cushion layer is coated outside the central reinforcing piece; the optical fiber units are uniformly wound on the periphery of the cushion layer, each optical fiber unit comprises a sleeve and a plurality of optical fibers, the sleeve is filled with fiber paste, and the optical fibers are arranged in the sleeve and embedded in the fiber paste; the first water-blocking tape layer covers the optical fiber units, cable paste is filled between the first water-blocking tape layer and the cushion layer, and the optical fiber units are embedded in the cable paste; the armor layer is coated outside the first water-blocking tape layer; the second water-blocking tape layer is coated outside the armor layer; the outer sheath is coated outside the second waterproof belt layer; the weather-resistant coating is coated outside the outer sheath.

2. The durable loose-tube stranded optical cable of claim 1, wherein: the central reinforcing piece is a single metal steel wire central reinforcing core.

3. The durable loose-tube stranded optical cable of claim 1, wherein: the cushion layer is made of PE materials.

4. The durable loose-tube stranded optical cable of claim 1, wherein: the first water-blocking tape layer and the second water-blocking tape layer are both semiconductor water-blocking tapes.

5. The durable loose-tube stranded optical cable of claim 1, wherein: the armor layer is a plastic-coated corrugated steel belt or an aluminum belt.

6. The durable loose-tube stranded optical cable of claim 1, wherein: the outer sheath is made of PE.

7. The durable loose-tube stranded optical cable of claim 1, wherein: the number of the optical fiber units is 2-144.