CN206411302U

CN206411302U - A kind of low-smoke non-halogen flame-retardant field optical cable

Info

Publication number: CN206411302U
Application number: CN201621454830.2U
Authority: CN
Inventors: 沈辰霖
Original assignee: NINGBO INGO ELECTRONICAL TECHNOLOGY Co Ltd
Current assignee: NINGBO INGO ELECTRONICAL TECHNOLOGY Co Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2017-08-15
Anticipated expiration: 2026-12-28

Abstract

A kind of low-smoke non-halogen flame-retardant field optical cable, including the first sheath, some optical fiber are provided with first sheath, from being sequentially provided with the second sheath for being coaxially disposed inside outside in first sheath, aluminium strip layer, water blocking tape layer and central reinforcing layer, the central reinforcing layer is wrapped with the bed course for being coaxial therewith setting, above-mentioned some optical fiber are uniformly distributed between bed course and water blocking tape layer, every optical fiber periphery is enclosed with aramid yarn, tight set is arranged with outside the aramid yarn, so that aramid yarn is tightly around in optical fiber periphery, the 3rd sheath is also arranged with outside the tight set, filled with fine cream outside 3rd sheath, first sheath is medium density polyethylene material, second sheath and the 3rd sheath are halogen-free low-smoke flame retardant material.First sheath is medium density polyethylene material, can improve the environment-adapting ability of optical cable, the second sheath and the 3rd sheath are halogen-free low-smoke flame retardant material, and the 3rd sheath is sheathed on outside every optical fiber, so as to substantially increase the anti-flammability of optical fiber.

Description

A kind of low-smoke non-halogen flame-retardant field optical cable

Technical field

The utility model is related to a kind of optical cable, particularly a kind of low-smoke non-halogen flame-retardant field optical cable.

Background technology

Field optical cable, as the term suggests being exactly the optical cable for field, this optical cable needs preferable environment-adapting ability, simultaneously Also preferable flame retardant effect is wanted, but current field optical cable, have much room for improvement in terms of environment-adapting ability with flame retardant effect.

The content of the invention

In order to solve above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of low smoke and zero halogen of resistance to environment resistance Fire field optical cable.

To achieve these goals, a kind of low-smoke non-halogen flame-retardant field optical cable designed by the utility model, including first Sheath, be provided with first sheath in some optical fiber, first sheath from be sequentially provided with inside outside be coaxially disposed second Sheath, aluminium strip layer, water blocking tape layer and central reinforcing layer, the central reinforcing layer are wrapped with the bed course for being coaxial therewith setting, Above-mentioned some optical fiber are uniformly distributed between bed course and water blocking tape layer, and every optical fiber periphery is enclosed with aramid yarn, the aramid fiber Tight set is arranged with outside yarn, so that aramid yarn is also arranged with the 3rd sheath, the described 3rd tightly around in optical fiber periphery outside the tight set Filled with fine cream outside sheath, first sheath is medium density polyethylene material, and second sheath and the 3rd sheath are low Cigarette bittern-free flame-proof material.

Further, the central reinforcing layer is several stranded steel wires.

Compared with prior art, a kind of low-smoke non-halogen flame-retardant field optical cable that the utility model is obtained, its advantage is： 1st, the first sheath is medium density polyethylene material, and the long-term retentivity with good environmental stress crack resistance and intensity can To improve the environment-adapting ability of optical cable, the second sheath and the 3rd sheath are halogen-free low-smoke flame retardant material, and the 3rd sheath set Outside every optical fiber, so as to substantially increase the anti-flammability of optical fiber；2nd, in every optical fiber outer wrapping aramid yarn, further improve Resistance to environment capacity, service life is longer.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

The utility model is further illustrated with reference to the accompanying drawings and examples.

As shown in figure 1, a kind of low-smoke non-halogen flame-retardant field optical cable that the utility model is provided, including the first sheath 1, it is described It is provided with first sheath in some optical fiber 2, first sheath from being sequentially provided with the second sheath 3, the aluminium that are coaxially disposed inside outside Belt 4, water blocking tape layer 5 and central reinforcing layer 6, the central reinforcing layer are wrapped with the bed course 7 for being coaxial therewith setting, bed course Expanded material typically is used, above-mentioned some optical fiber are uniformly distributed between bed course and water blocking tape layer, each optical fiber periphery parcel Have and tight set 9 is arranged with outside aramid yarn 8, the aramid yarn, so that aramid yarn is also arranged tightly around in optical fiber periphery outside the tight set Have filled with fine cream outside the 3rd sheath 10, the 3rd sheath, and the 3rd sheath and bed course are tangent, during first sheath is Density polyethylene materials, second sheath and the 3rd sheath are halogen-free low-smoke flame retardant material.

In the present embodiment, the central reinforcing layer 6 is several stranded steel wires, and these steel wires pass through phosphorating treatment.

Aramid yarn has density small, and stretch modulus is very high, and fracture strength is higher and the more low performance of fracture elongation, Under higher temperature, intrinsic stability, low-down shrinkage factor, relatively low creep and very high glass transition can be kept Temperature, higher corrosion resistance is non-conductive, with stronger chemical resistance.Aramid yarn is enclosed with outside every optical fiber, and Aramid yarn is effectively fixed by tightly covering, so as to improve the environment-adapting ability of optical cable, increased the service life.

Claims

1. some optical fiber, its feature are provided with a kind of low-smoke non-halogen flame-retardant field optical cable, including the first sheath, first sheath It is：From being sequentially provided with the second sheath being coaxially disposed, aluminium strip layer, water blocking tape layer and center inside outside in first sheath Enhancement layer, the central reinforcing layer is wrapped with the bed course for being coaxial therewith setting, and above-mentioned some optical fiber are uniformly distributed in bed course Between water blocking tape layer, every optical fiber periphery is enclosed with outside aramid yarn, the aramid yarn and is arranged with tight set, so that aramid yarn is tight It is around in outside optical fiber periphery, the tight set and is also arranged with the 3rd sheath, filled with fine cream, first sheath outside the 3rd sheath For medium density polyethylene material, second sheath and the 3rd sheath are halogen-free low-smoke flame retardant material.

2. low-smoke non-halogen flame-retardant field optical cable according to claim 1, it is characterised in that：The central reinforcing layer is several Stranded steel wire.