CN216210113U

CN216210113U - High-flame-retardance indoor leading-in optical cable

Info

Publication number: CN216210113U
Application number: CN202122654497.7U
Authority: CN
Inventors: 严侠琪; 施金
Original assignee: NINGBO TIANLI COMMUNICATION TECHNOLOGY CO LTD
Current assignee: NINGBO TIANLI COMMUNICATION TECHNOLOGY CO LTD
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-05
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a high-flame-retardance indoor leading-in optical cable, and relates to the technical field of communication optical cables. The optical fiber tight-sleeved device comprises tight-sleeved optical fibers, optical fiber fillers, a reinforcing layer, a double-sided plastic-coated steel belt, a metal woven net, a reinforcing steel wire and a flame-retardant sheath, wherein the tight-sleeved optical fibers, the optical fiber fillers, the reinforcing layer, the double-sided plastic-coated steel belt, the metal woven net and the reinforcing steel wire are sequentially sleeved in the flame-retardant sheath, and the tight-sleeved optical fibers comprise inner sleeves, fiber cores and fiber pastes. This high fire-retardant indoor leading-in optical cable, tight cover optic fibre is filled fine cream and is carried out key protection to optic fibre, optic fibre filler, enhancement layer, two-sided plastic-coated steel band and metal mesh grid guarantee that the optical cable has fine mechanical properties and temperature characteristic, good crushing resistance and compliance, two-sided plastic-coated steel band improves the moisture permeability resistance ability of optical cable, the tensile strength of optical cable is guaranteed to the enhancement steel wire of two parallels, fire-retardant sheath has fine flame retardant property, protect optical cable and ecological environment better.

Description

High-flame-retardance indoor leading-in optical cable

Technical Field

The utility model relates to the technical field of communication optical cables, in particular to a high-flame-retardance indoor leading-in optical cable.

Background

Optical fiber cables are manufactured to meet optical, mechanical or environmental performance specifications by utilizing one or more optical fibers disposed in a surrounding jacket as the transmission medium and can be used individually or in groups as telecommunication cable assemblies, the optical fiber cable being composed primarily of optical fibers and plastic protective sleeves and plastic sheaths.

The optical cable is widely used in various industries as an important carrier of power transmission, however, in some high-temperature and high-corrosion environments, the outer skin of the optical cable is easy to age and damage, and the existing optical cable has the defects of insufficient high-temperature resistance and flame retardance, influence on the service life of the optical cable and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-flame-retardance indoor leading-in optical cable, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-flame-retardance indoor leading-in optical cable comprises a tight-buffered optical fiber, an optical fiber filler, a reinforcing layer, a double-sided plastic-coated steel belt, a metal woven net, a reinforcing steel wire and a flame-retardant sheath, wherein the tight-buffered optical fiber, the optical fiber filler, the reinforcing layer, the double-sided plastic-coated steel belt, the metal woven net and the reinforcing steel wire are sequentially sleeved in the flame-retardant sheath;

the tight-buffered optical fiber comprises an inner sleeve, a fiber core and fiber paste, wherein the fiber core is positioned in the inner sleeve, and the fiber paste is filled in a gap between the inner sleeve and the fiber core.

Furthermore, the tight-buffered optical fibers are circumferentially arranged, and the flame-retardant sheath is a low-smoke halogen-free flame-retardant polyolefin sheath.

Furthermore, the optical fiber filler is mineral extending cotton rope, and the reinforcing layer is aramid yarn.

Furthermore, the double-sided plastic-coated steel belt adopts a longitudinal wrapping mode, and water-blocking ointment is filled between the double-sided plastic-coated steel belt and the metal woven mesh.

Furthermore, embedded grooves are formed in two sides of the inner ring of the flame-retardant sheath, and the reinforcing steel wires are located in the embedded grooves in parallel.

Compared with the prior art, the utility model provides a high-flame-retardance indoor leading-in optical cable which has the following beneficial effects:

this high fire-retardant indoor leading-in optical cable, tight cover optic fibre is filled fine cream and is carried out key protection to optic fibre, optic fibre filler, enhancement layer, two-sided plastic-coated steel band and metal mesh grid guarantee that the optical cable has fine mechanical properties and temperature characteristic, good crushing resistance and compliance, two-sided plastic-coated steel band improves the moisture permeability resistance ability of optical cable, the tensile strength of optical cable is guaranteed to the enhancement steel wire of two parallels, fire-retardant sheath has fine flame retardant property, protect optical cable and ecological environment better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. tightly sleeving the optical fiber; 2. a fiber optic filler; 3. a reinforcing layer; 4. coating a plastic steel belt on two sides; 5. a metal mesh grid; 6. reinforcing steel wires; 7. a flame retardant jacket; 8. an inner sleeve; 9. a fiber core; 10. fiber paste; 11. a water-blocking ointment; 12. and a groove is embedded.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the utility model discloses a high flame-retardant indoor leading-in optical cable, which comprises a tight-buffered optical fiber 1, an optical fiber filler 2, a reinforcing layer 3, a double-sided plastic-coated steel strip 4, a metal woven mesh 5, a reinforcing steel wire 6 and a flame-retardant sheath 7, wherein the tight-buffered optical fiber 1, the optical fiber filler 2, the reinforcing layer 3, the double-sided plastic-coated steel strip 4, the metal woven mesh 5 and the reinforcing steel wire 6 are sequentially sleeved in the flame-retardant sheath 7, the tight-buffered optical fiber 1 is filled with fiber paste 10 to carry out key protection on the optical fiber, the optical fiber filler 2, the reinforcing layer 3, the double-sided plastic-coated steel strip 4 and the metal woven mesh 5 ensure that the optical cable has good mechanical property and temperature property, good pressure resistance and flexibility, the double-sided plastic-coated steel strip 4 improves the moisture resistance of the optical cable, the two parallel reinforcing steel wires 6 ensure the tensile strength of the optical cable, and the flame-retardant sheath 7 has good flame-retardant property, the optical cable and the ecological environment are better protected;

the tight-buffered optical fiber 1 comprises an inner sleeve 8, a fiber core 9 and fiber paste 10, wherein the fiber core 9 is positioned in the inner sleeve 8, and the fiber paste 10 is filled in a gap between the inner sleeve 8 and the fiber core 9.

Specifically, the tight buffered optical fiber 1 is circumferentially arranged, and the flame-retardant sheath 7 is a low-smoke halogen-free flame-retardant polyolefin sheath.

In the embodiment, the low-smoke halogen-free material taking the polyolefin as the base material can not generate a large amount of black smoke and harmful HCl gas during ignition and combustion, so that serious harm to human health and monitoring equipment can be avoided, and secondary loss of fire is reduced.

Specifically, the optical fiber filler 2 is a mineral extending rope, and the reinforcing layer 3 is aramid yarn.

In the embodiment, the mineral continuous cotton rope can reach the A-type flame retardant grade, the aramid yarn has special performances of small density, very high tensile modulus, higher breaking strength, lower breaking elongation and the like, can keep inherent stability, very low shrinkage, lower creep and very high glass transition temperature at higher temperature, and has higher corrosion resistance, non-conductivity and stronger chemical resistance except strong acid and strong alkali.

Specifically, the double-sided plastic-coated steel strip 4 adopts a longitudinal wrapping mode, and water-blocking ointment 11 is filled between the double-sided plastic-coated steel strip 4 and the metal woven mesh 5.

In this embodiment, the double-sided plastic-coated steel strip 4 has good mechanical properties, the optical cable can be protected for a longer time, and the water-blocking ointment 11 is used for preventing the optical cable from water seepage and dampness.

Specifically, the two sides of the inner ring of the flame-retardant sheath 7 are provided with embedded grooves 12, and the reinforcing steel wires 6 are parallelly arranged in the embedded grooves 12.

In this embodiment, the tensile strength of the optical cable is ensured by the two parallel reinforcing steel wires 6.

When the optical cable is used, the tight-buffered optical fiber 1 is filled with the fiber paste 10 to carry out key protection on the optical fiber, the optical fiber filler 2, the reinforcing layer 3, the double-sided plastic-coated steel strip 4 and the metal woven mesh 5 ensure that the optical cable has good mechanical property and temperature characteristic and good pressure resistance and flexibility, the double-sided plastic-coated steel strip 4 improves the moisture-permeable resistance of the optical cable, the two parallel reinforcing steel wires 6 ensure the tensile strength of the optical cable, the flame-retardant sheath 7 has good flame-retardant property, and the optical cable and the ecological environment are better protected.

In conclusion, in the high-flame-retardancy indoor leading-in optical cable, the tight-sleeved optical fiber 1 is filled with the fiber paste 10 to carry out key protection on the optical fiber, the optical fiber filler 2, the reinforcing layer 3, the double-sided plastic-coated steel strip 4 and the metal woven net 5 ensure that the optical cable has good mechanical property and temperature characteristic and good compressive resistance and flexibility, the double-sided plastic-coated steel strip 4 improves the moisture-penetration resistance of the optical cable, the two parallel reinforcing steel wires 6 ensure the tensile strength of the optical cable, and the flame-retardant sheath 7 has good flame-retardancy, so that the optical cable and the ecological environment are better protected.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an indoor optical cable that introduces of high fire-retardant, includes tight set optic fibre (1), optic fibre filler (2), enhancement layer (3), two-sided plastic-coated steel band (4), woven metal mesh (5), strengthens steel wire (6) and fire-retardant sheath (7), its characterized in that: the tight-sleeved optical fiber (1), the optical fiber filler (2), the reinforcing layer (3), the double-sided plastic-coated steel belt (4), the metal woven mesh (5) and the reinforcing steel wire (6) are sequentially sleeved in the flame-retardant sheath (7);

the tight-buffered optical fiber (1) comprises an inner sleeve (8), a fiber core (9) and fiber paste (10), wherein the fiber core (9) is positioned in the inner sleeve (8), and the fiber paste (10) is filled in a gap between the inner sleeve (8) and the fiber core (9).

2. A high flame retardant indoor drop cable according to claim 1, wherein: the tight-buffered optical fibers (1) are circumferentially arranged, and the flame-retardant sheath (7) is a low-smoke halogen-free flame-retardant polyolefin sheath.

3. A high flame retardant indoor drop cable according to claim 1, wherein: the optical fiber filler (2) is a mineral extending cotton rope, and the reinforcing layer (3) is aramid yarn.

4. A high flame retardant indoor drop cable according to claim 1, wherein: the double-sided plastic-coated steel strip (4) adopts a longitudinal wrapping mode, and water-blocking ointment (11) is filled between the double-sided plastic-coated steel strip (4) and the metal woven mesh (5).

5. A high flame retardant indoor drop cable according to claim 1, wherein: and embedded grooves (12) are formed in two sides of the inner ring of the flame-retardant sheath (7), and the reinforcing steel wires (6) are positioned in the embedded grooves (12) in parallel.