CN217561789U - Flame-retardant and fire-resistant communication optical cable - Google Patents

Abstract

The utility model discloses a flame-retardant fire-resistant communication optical cable, which comprises an elastic supporting piece, the cross section of the elastic supporting piece is arranged in a pentagonal structure, a reinforcing piece is arranged at the center of the elastic supporting piece, the elastic supporting piece is arranged in a silicone rubber integrated structure, the reinforcing piece is arranged in a polypropylene integrated cylindrical structure, and optical cable cores are respectively arranged at the center of each end angle of the elastic supporting piece; the outer part of the elastic support piece is sequentially wrapped with an inner flame-retardant layer, a shielding layer, an outer flame-retardant layer, a heat-insulating layer and an outer protective layer from inside to outside, and cable paste is filled between the elastic support piece and the inner flame-retardant layer. The utility model discloses technical scheme improves the structure of current communication optical cable, promotes its fire behaviour.

Description

Flame-retardant and fire-resistant communication optical cable

Technical Field

The utility model relates to an optical cable technical field, in particular to fire-retardant fire-resistant communication optical cable.

Background

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and are telecommunication cable assemblies 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. The manufacture of optical cables requires certain flame retardant and fireproof properties, but under the condition that the fireproof requirements are increasingly improved, the optical cables in the prior art are increasingly difficult to meet the requirements.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fire-retardant fire-resistant communication optical cable aims at improving current communication optical cable's structure, promotes its fire behaviour.

In order to achieve the above object, the utility model provides a flame-retardant fire-resistant communication optical cable, which comprises an elastic supporting member, wherein the cross section of the elastic supporting member is arranged in a pentagonal structure, a reinforcing member is arranged at the center of the elastic supporting member, the elastic supporting member is arranged in a silicon rubber integrated structure, the reinforcing member is arranged in a polypropylene integrated cylindrical structure, and optical cable cores are respectively arranged at the centers of all end angles of the elastic supporting member; the outer part of the elastic support piece is sequentially wrapped with an inner flame-retardant layer, a shielding layer, an outer flame-retardant layer, a heat-insulating layer and an outer protective layer from inside to outside, and cable paste is filled between the elastic support piece and the inner flame-retardant layer.

Preferably, the inner flame-retardant layer is provided as an aramid yarn layer structure.

Preferably, the shielding layer is arranged in a tinned copper wire stranded structure.

Preferably, the outer flame retardant layer is provided as a flame retardant nylon layer structure.

Preferably, the thermal insulation layer is provided as a fiberglass layer structure.

Preferably, the outer protective layer is provided as a high density polyethylene layer structure.

Compared with the prior art, the beneficial effects of the utility model are that: the structure of the existing communication optical cable is improved, the fire resistance and the flame retardance of the communication optical cable are greatly improved by arranging the inner and outer double-layer flame retardant structure, and the inner and outer flame retardant layers are separated by the shielding layer, so that the flame retardance can be effectively improved, and meanwhile, the signal interference resistance of the communication optical cable is improved; the elastic supporting piece is arranged in the communication optical cable, so that the communication optical cable can be supported, external force can be effectively buffered, and an internal cable core is protected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure diagram of the communication optical cable of the present invention;

the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The flame-retardant fire-resistant communication optical cable provided by the embodiment comprises an elastic supporting piece 1, wherein the cross section of the elastic supporting piece 1 is in a pentagonal structure, a reinforcing piece 2 is arranged at the center of the elastic supporting piece 1, the elastic supporting piece 1 is in a silicon rubber integrated structure, the reinforcing piece 2 is in a polypropylene integrated cylindrical structure, and optical cable cores 3 are respectively arranged at the centers of all end corners of the elastic supporting piece 1; the outer part of the elastic support member 1 is sequentially wrapped with an inner flame-retardant layer 4, a shielding layer 5, an outer flame-retardant layer 6, a heat-insulating layer 7 and an outer protective layer 8 from inside to outside, and cable paste 9 is filled between the elastic support member 1 and the inner flame-retardant layer 4.

It should be noted that, the embodiment improves the structure of the existing communication optical cable, the fire resistance and flame retardance of the communication optical cable are greatly improved by arranging the inner and outer double-layer flame retardant structure, and the inner and outer flame retardant layers 6 are separated by the shielding layer 5, so that the flame retardance can be effectively improved, and the signal interference resistance of the communication optical cable is improved; inside elastic support piece 1 that sets up of communication optical cable, in this embodiment, elastic support piece 1 sets up to a silicon rubber body structure, when supporting communication optical cable, can also effectively cushion external force, protect inside cable core, and elastic support piece 1 sets up to pentagonal structure, each optical cable core 3 equipartition respectively in 1 end angle central point of elastic support piece puts, guarantee the stability of structure, elastic support piece 1 center still increases a polypropylene reinforcement 2, can effectively promote the holistic toughness of communication optical cable, guarantee its life.

Further, interior fire-retardant layer 4 sets up to aramid yarn layer structure, and aramid yarn can keep inherent stability under higher temperature, and very low shrinkage factor, lower creep and very high glass transition temperature have higher corrosion resistance in addition, and the nonconducting can also promote communication optical cable's fire behaviour when guaranteeing insulating nature.

Furthermore, the shielding layer 5 is of a tinned copper wire stranded structure, so that the anti-interference capability of the communication optical cable on external signals is improved.

Further, outer flame retardant layer 6 sets up to fire-retardant nylon layer structure, and fire-retardant nylon has good fire behaviour, can further promote the fire behaviour of communication optical cable, and outer flame retardant layer 6 realizes double-deck fire-retardant structure through the combination with interior flame retardant layer 4, has promoted communication optical cable's fire-retardant fire resistance greatly.

Furthermore, the heat insulation layer 7 is arranged in a glass fiber layer structure, so that the heat insulation performance of the communication optical cable is improved, and the problem that the temperature of the conductor is severely increased in work due to too strong sunlight is avoided.

Furthermore, the outer protective layer 8 is set to be a high-density polyethylene layer structure, the hardness, tensile strength and creep property of the high-density polyethylene material are superior to those of low-density polyethylene, the abrasion resistance, electrical insulation, toughness and cold resistance are good, the chemical stability is good, the abrasion resistance of the optical cable is improved, and the abrasion degree of the optical cable is reduced.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (6)

1. The flame-retardant fire-resistant communication optical cable is characterized by comprising an elastic supporting piece, wherein the cross section of the elastic supporting piece is arranged in a pentagonal structure, a reinforcing piece is arranged in the center of the elastic supporting piece, the elastic supporting piece is arranged in a silicone rubber integrally-formed structure, the reinforcing piece is arranged in a polypropylene integrally-formed cylindrical structure, and optical cable cores are respectively arranged in the centers of all end corners of the elastic supporting piece; the outer part of the elastic support piece is sequentially wrapped with an inner flame-retardant layer, a shielding layer, an outer flame-retardant layer, a heat-insulating layer and an outer protective layer from inside to outside, and cable paste is filled between the elastic support piece and the inner flame-retardant layer.

2. The flame-retardant, fire-resistant optical communication cable of claim 1, wherein the inner flame-retardant layer is provided as a aramid yarn layer structure.

3. The flame-retardant, fire-resistant optical communication cable of claim 1, wherein the shielding layer is provided in a tinned copper stranded structure.

4. The flame-retardant, fire-resistant optical communication cable of claim 1, wherein the outer flame-retardant layer is provided as a flame-retardant nylon layer structure.

5. The flame-retardant, fire-resistant optical communication cable of claim 1, wherein the thermal insulation layer is provided as a fiberglass layer structure.

6. The flame-retardant, fire-resistant optical communication cable according to claim 1, wherein the outer protective layer is provided as a high-density polyethylene layer structure.

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