CN214895949U - Flame-retardant and fire-resistant communication optical cable - Google Patents

Abstract

The utility model relates to the technical field of communication optical cables, in particular to a flame-retardant and fire-resistant communication optical cable; the flame-retardant and fire-resistant communication optical cable comprises a protective layer, a cable core, flame-retardant paste and a plurality of limiting rings, wherein the limiting rings are detachably connected with the cable core and are uniformly arranged on the outer side wall of the cable core at intervals; the fire-retardant cream prevents that outside flame from influencing inside cable core, and after the local emergence of fire-retardant fire-resistant communication optical cable damaged, cracked part owing to receive the restriction of spacing ring, the cable core can not scatter, the subsequent maintenance of being convenient for.

Description

Flame-retardant and fire-resistant communication optical cable

Technical Field

The utility model relates to a communication optical cable technical field especially relates to a 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 may be used individually or in groups as telecommunication cable assemblies. 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 existing optical cables are of plastic sleeve factice filling plastic sheath structures, and after the optical cables are burnt out, the internal optical fibers can be scattered, so that subsequent maintenance is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant fire-resistant communication optical cable aims at solving among the prior art optical cable and is blown the back, and inside optic fibre can scatter, is unfavorable for the technical problem of subsequent maintenance.

In order to achieve the above object, the utility model provides a fire-retardant fire-resistant communication optical cable, fire-retardant fire-resistant communication optical cable includes protective layer, cable core, fire-retardant cream and spacing ring, the quantity of spacing ring is a plurality of, every the spacing ring all with the connection is dismantled to the cable core to interval align to grid in the lateral wall of cable core, the protective layer respectively with a plurality of spacing ring fixed connection, every the spacing ring all is located the inside of protective layer, fire-retardant cream fill in the cable core with between the protective layer.

After the local part of the flame-retardant and fire-resistant communication optical cable is damaged, the broken part is limited by the limiting ring, so that the cable core cannot be scattered, and the subsequent maintenance is facilitated.

The cable core comprises a plurality of optical fibers and a central reinforcing core, wherein the number of the optical fibers is multiple, and each optical fiber is detachably connected with the central reinforcing core and is respectively wound on the outer side wall of the central reinforcing core.

And the central reinforced core is used as a support main body of the flame-retardant and fire-resistant communication optical cable, so that the pressure resistance is enhanced.

Wherein, the spacing ring includes outer fixed ring, link and interior fixed ring, outer fixed ring with protective layer fixed connection, and be located the inside of protective layer, the link respectively with outer fixed ring with interior fixed ring fixed connection, and be located outer fixed ring's inside wall, and be located outer fixed ring with between the interior fixed ring.

Utilize outer fixed ring with the protection layer is connected, utilize inner fixed ring with the cable core is connected, has played the fixed effect of support.

Wherein, the spacing ring still includes the elastic layer, the elastic layer with interior fixed ring fixed connection, and be located interior fixed ring's inside wall, and be located interior fixed ring with between the cable core.

The cable core formed by the optical fibers is uneven in outer surface, and the cable core is fixed inside the inner fixing ring through extrusion of the elastic layer.

The protective layer comprises a fireproof layer and a waterproof layer, the fireproof layer is respectively fixedly connected with a plurality of limiting rings, each limiting ring is located inside the fireproof layer, and the waterproof layer is fixedly connected with the fireproof layer and located on the outer side wall of the fireproof layer.

The waterproof layer wraps the fireproof layer to prevent liquid from entering and permeating the fireproof layer to cause the fireproof layer to lose efficacy.

The protective layer further comprises a sheath, and the sheath is fixedly connected with the waterproof layer and is positioned on the outer side wall of the waterproof layer.

The sheath is the outermost layer of the flame-retardant and fire-resistant communication optical cable and serves as a first protection.

The fireproof layer comprises a first ceramic fireproof composite belt and an oxygen isolation belt, the first ceramic fireproof composite belt is fixedly connected with a plurality of limiting rings respectively, each limiting ring is located inside the first ceramic fireproof composite belt, and the oxygen isolation belt is fixedly connected with the first ceramic fireproof composite belt and located on the outer side wall of the first ceramic fireproof composite belt.

Through the oxygen isolation belt, oxygen is isolated at the outer side of the first ceramic fireproof composite belt, so that the protective layer is prevented from being burnt, and the first ceramic fireproof composite belt has a heat insulation effect.

The fireproof layer further comprises a second ceramic fireproof composite belt, and the second ceramic fireproof composite belt is fixedly connected with the oxygen isolation belt and is positioned on the outer side wall of the oxygen isolation belt.

The second ceramic fireproof composite belt is positioned between the waterproof layer and the oxygen isolation belt and plays roles of heat insulation and fire resistance.

The utility model discloses a fire-retardant fire-resistant communication optical cable, through the protective layer with between the cable core, the interval sets up the spacing ring is not influencing when fire-retardant fire-resistant communication optical cable's normal bending, play fixedly the effect of cable core the both sides of spacing ring are filled fire-retardant cream, fire-retardant cream prevents that outside flame from influencing inside the cable core works as after fire-retardant fire-resistant communication optical cable's local emergence damages, cracked part is owing to receive the restriction of spacing ring, the cable core can not scatter, the subsequent maintenance of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.

Fig. 1 is a schematic structural view of a flame-retardant and fire-resistant communication optical cable provided by the present invention.

Fig. 2 is a cross-sectional view of the present invention at a in fig. 1.

Fig. 3 is a cross-sectional view of the present invention at B of fig. 1.

Fig. 4 is a schematic structural view of the fire-retardant layer of the present invention.

Fig. 5 is a schematic structural diagram of the stop collar of the present invention.

1-protective layer, 11-fireproof layer, 111-first ceramic fire-resistant composite band, 112-oxygen isolation band, 113-second ceramic fire-resistant composite band, 12-waterproof layer, 13-sheath, 2-cable core, 21-optical fiber, 22-central reinforced core, 3-flame retardant paste, 4-spacing ring, 41-outer fixed ring, 42-connecting frame, 43-inner fixed ring and 44-elastic layer.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Please refer to fig. 1 to 5, the utility model provides a fire-retardant fire-resistant communication optical cable, fire-retardant fire-resistant communication optical cable includes protective layer 1, cable core 2, fire-retardant cream 3 and spacing ring 4, the quantity of spacing ring 4 is a plurality of, every spacing ring 4 all with cable core 2 dismantles the connection to interval align to grid in the lateral wall of cable core 2, protective layer 1 respectively with a plurality of spacing ring 4 fixed connection, every spacing ring 4 all is located the inside of protective layer 1, fire-retardant cream 3 is filled in cable core 2 with between the protective layer 1.

In this embodiment, through protective layer 1 with between the cable core 2, the interval sets up stop collar 4 does not influence when fire-retardant fire-resistant communication optical cable's normal bending, plays fixedly cable core 2's effect fire-retardant cream 3 is filled to stop collar 4's both sides, fire-retardant cream 3 prevents that outside flame from influencing inside cable core 2 works as after fire-retardant fire-resistant communication optical cable's local emergence is damaged, cracked part owing to receive stop collar 4's restriction, cable core 2 can not scatter, the subsequent maintenance of being convenient for.

Further, the cable core 2 comprises a plurality of optical fibers 21 and a central reinforcing core 22, wherein each optical fiber 21 is detachably connected with the central reinforcing core 22 and respectively wound on the outer side wall of the central reinforcing core 22; the limiting ring 4 comprises an outer fixing ring 41, a connecting frame 42 and an inner fixing ring 43, the outer fixing ring 41 is fixedly connected with the protective layer 1 and is located inside the protective layer 1, the connecting frame 42 is respectively fixedly connected with the outer fixing ring 41 and the inner fixing ring 43 and is located on the inner side wall of the outer fixing ring 41 and is located between the outer fixing ring 41 and the inner fixing ring 43; the spacing ring 4 further comprises an elastic layer 44, the elastic layer 44 is fixedly connected with the inner fixing ring 43 and is positioned on the inner side wall of the inner fixing ring 43, and is positioned between the inner fixing ring 43 and the cable core 2.

In the present embodiment, the central strength member 22 is used as a support body of the flame-retardant and fire-resistant optical communication cable, thereby enhancing the pressure resistance; the outer fixing ring 41 is connected with the protective layer 1, and the inner fixing ring 43 is connected with the cable core 2, so that the supporting and fixing effects are achieved; the outer surface of the cable core 2 formed of the plurality of optical fibers 21 is uneven, and the cable core 2 is fixed inside the inner fixing ring 43 by the pressing of the elastic layer 44.

Further, the protective layer 1 comprises a fireproof layer 11 and a waterproof layer 12, the fireproof layer 11 is fixedly connected with the plurality of limiting rings 4, each limiting ring 4 is located inside the fireproof layer 11, and the waterproof layer 12 is fixedly connected with the fireproof layer 11 and located on the outer side wall of the fireproof layer 11; the protective layer 1 further comprises a sheath 13, and the sheath 13 is fixedly connected with the waterproof layer 12 and is positioned on the outer side wall of the waterproof layer 12; the fireproof layer 11 comprises a first ceramic fireproof composite belt 111 and an oxygen isolation belt 112, the first ceramic fireproof composite belt 111 is fixedly connected with a plurality of limiting rings 4 respectively, each limiting ring 4 is located inside the first ceramic fireproof composite belt 111, and the oxygen isolation belt 112 is fixedly connected with the first ceramic fireproof composite belt 111 and located on the outer side wall of the first ceramic fireproof composite belt 111; the fireproof layer 11 further comprises a second ceramic fireproof composite belt 113, and the second ceramic fireproof composite belt 113 is fixedly connected with the oxygen barrier belt 112 and is located on the outer side wall of the oxygen barrier belt 112.

In this embodiment, the sheath 13 is an outermost layer of the flame-retardant and fire-resistant communication optical cable as a first protection, the waterproof layer 12 is located between the sheath 13 and the fire-proof layer 11 as a second protection for preventing liquid from entering and permeating into the fire-proof layer 11 to cause failure thereof, and the fire-proof layer 11 is used as a third protection for preventing external flames from affecting the cable core 2 inside; the protective layer is divided into the first ceramic fireproof composite belt 111, the oxygen isolation belt 112 and the second ceramic fireproof composite belt 113, the first ceramic fireproof composite belt 111 and the second ceramic fireproof composite belt 113 isolate external fire heat and high temperature, the oxygen isolation belt 112 isolates oxygen outside the first ceramic fireproof composite belt 111 to prevent the protective layer 1 from burning, and through the structure, the effects of heat isolation, flame retardance and fire resistance are achieved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (8)

1. A flame-retardant and fire-resistant optical communication cable, characterized in that,

the flame-retardant and fire-resistant communication optical cable comprises a protective layer, a cable core, flame-retardant paste and limiting rings, wherein the number of the limiting rings is multiple, each limiting ring is detachably connected with the cable core and uniformly arranged on the outer side wall of the cable core at intervals, the protective layer is fixedly connected with the limiting rings, each limiting ring is positioned in the protective layer, and the flame-retardant paste is filled between the cable core and the protective layer.

2. The flame-retardant, fire-resistant optical communication cable of claim 1,

the cable core comprises a plurality of optical fibers and a central reinforcing core, and each optical fiber is detachably connected with the central reinforcing core and respectively wound on the outer side wall of the central reinforcing core.

3. The flame-retardant, fire-resistant optical communication cable of claim 2,

the spacing ring includes outer fixed ring, link and interior fixed ring, outer fixed ring with protective layer fixed connection, and be located the inside of protective layer, the link respectively with outer fixed ring with interior fixed ring fixed connection, and be located outer fixed ring's inside wall, and be located outer fixed ring with between the interior fixed ring.

4. A flame-retardant, fire-resistant optical communication cable according to claim 3,

the spacing ring still includes the elastic layer, the elastic layer with interior fixed ring fixed connection, and be located interior fixed ring's inside wall, and be located interior fixed ring with between the cable core.

5. The flame-retardant, fire-resistant optical communication cable of claim 4,

the protective layer includes flame retardant coating and waterproof layer, the flame retardant coating respectively with a plurality of spacing ring fixed connection, every the spacing ring all is located the inside of flame retardant coating, the waterproof layer with flame retardant coating fixed connection, and be located the lateral wall of flame retardant coating.

6. A flame-retardant, fire-resistant optical communication cable according to claim 5,

the protective layer further comprises a sheath, and the sheath is fixedly connected with the waterproof layer and is positioned on the outer side wall of the waterproof layer.

7. The flame-retardant, fire-resistant optical communication cable of claim 6,

the fireproof layer comprises a first ceramic fireproof composite belt and an oxygen isolation belt, the first ceramic fireproof composite belt is fixedly connected with a plurality of limiting rings respectively, each limiting ring is located inside the first ceramic fireproof composite belt, and the oxygen isolation belt is fixedly connected with the first ceramic fireproof composite belt and located on the outer side wall of the first ceramic fireproof composite belt.

8. A flame-retardant, fire-resistant optical communication cable according to claim 7,

the fireproof layer further comprises a second ceramic fireproof composite belt, and the second ceramic fireproof composite belt is fixedly connected with the oxygen isolation belt and is positioned on the outer side wall of the oxygen isolation belt.

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