CN210051942U

CN210051942U - Anti-biological outdoor optical cable

Info

Publication number: CN210051942U
Application number: CN201921088115.5U
Authority: CN
Inventors: 吕政鸿
Original assignee: DONGJIE OPTICAL TECHNOLOGY (SUZHOU) Co Ltd
Current assignee: DONGJIE OPTICAL TECHNOLOGY (SUZHOU) Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-02-11
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a biological-proof outdoor optical cable, which comprises a fire-resistant outer sheath, an FRP armor layer, a fire-resistant composite belt, an inner sheath, a water-blocking belt and a cable core layer from outside to inside in sequence; the cable core layer comprises a reinforcing piece arranged at the center and a sleeve which is provided with optical fibers and surrounds the periphery of the reinforcing piece, and water blocking yarns are arranged between the sleeve and the reinforcing piece. The utility model discloses fire resistance is good, light in weight, can satisfy and prevent biological requirement, and the effect is showing, is fit for pushing down wide the application under various abominable indoor outer environment.

Description

Anti-biological outdoor optical cable

Technical Field

The utility model relates to an optical cable technical field specifically is a prevent biological outdoor optical cable.

Background

Optical cables laid outdoors, particularly in mountainous areas, capital construction, underground areas, and the like, are susceptible to frequent accidents caused by communication interruption due to biting by rodents. Meanwhile, in various fires, the optical cable often plays the role of a fuse, so that the fire rapidly expands and spreads, valuable electronic instruments and equipment are damaged, the normal operation of a communication line is influenced, and even the fire breaks down, and the loss of disasters is expanded. The existing biological-resistant optical cable scheme mainly adopts metal armor protection and cannot meet the use requirements under the power environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent biological outdoor optical cable, it is effectual to prevent biology, has improved fire resistance and side pressure performance simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a biological-proof outdoor optical cable comprises a fire-resistant outer sheath, an FRP armor layer, a fire-resistant composite belt, an inner sheath, a water-blocking belt and a cable core layer in sequence from outside to inside; the cable core layer comprises a reinforcing piece arranged at the center and a sleeve which is provided with optical fibers and surrounds the periphery of the reinforcing piece, and water blocking yarns are arranged between the sleeve and the reinforcing piece.

The double-sheath structural design not only improves the anti-biting performance of the optical cable, but also improves the fire resistance and the side pressure performance. The fire-resistant composite belt has good heat insulation and flame retardant effects, so that the heat transfer to the inside of the optical cable during combustion is reduced, and the influence of high temperature on the optical fiber is reduced. The FRP armor layer has the characteristics of light weight, corrosion resistance, good electrical insulation performance, slow heat transfer, good thermal insulation, good instantaneous ultrahigh temperature resistance, electromagnetic wave transmission and the like. The FRP is spirally twisted and densely and uniformly distributed on the surface of the optical cable, the glass fiber can fall off in the process that the surface of the glass fiber composite plastic rod is damaged, the glass fiber can prick the oral cavity of rodents and birds, the animals are prevented from biting inwards, and the cable core is prevented from being further damaged on the premise that the outer sheath is damaged by the rodents and the birds. The dry water-blocking yarn is adopted to replace fiber paste, ointment is not filled in the gaps of the cable cores, and the water-blocking effect is achieved by adopting the dry water-blocking yarn and longitudinally wrapping the water-blocking tape, so that the flame-retardant and fire-resistant performance of the cable is improved, and the smoke density during combustion is greatly reduced.

Further perfecting the technical scheme, the fire-resistant outer sheath and the fire-resistant inner sheath both adopt ceramic polyolefin fire-resistant materials. The inner sheath and the outer sheath of the optical cable are both made of ceramic composite materials, and the ceramic composite materials can be rapidly hardened and gradually ceramic in the high-temperature and combustion processes to form a compact and hard ceramic shell oxygen isolation layer, so that the transmission of high temperature to the inside is reduced, and the integral fire resistance of the optical cable is improved.

Further, in order to offset the lateral pressure of the FRP armor layer and meet the performance of fire resistance and flame retardance, the wall thickness of the inner sheath is larger than 1 mm.

Furthermore, the FRP armor layer is a glass fiber composite plastic rod which is tightly arranged along the periphery of the fire-resistant composite belt and is spirally glued. The surface of the glass fiber composite plastic rod can be damaged to prick animals, so that the animals are prevented from being bitten by the animals.

Further, in order to prevent the FRP of the glass fiber reinforced plastic rod from being easily cracked during or after twisting, the twisting pitch should be properly enlarged, and the pitch ratio of the FRP armor layer is more than 25.

Further, the fire-resistant composite belt is wrapped outside the inner sheath in a longitudinal wrapping mode.

Further, the fire-resistant composite belt is a steel-plastic composite belt.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has good fire resistance and light weight, can meet the biological prevention requirement, simultaneously improves the fire resistance and the side pressure performance, and is suitable for wide application under various severe indoor and outdoor environments; the FRP armor layer is adopted, so that the use requirement under the power environment can be met.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the biological-resistant outdoor optical cable provided by the present invention sequentially comprises a fire-resistant outer sheath 1, an FRP armor layer 2, a fire-resistant composite tape 3, an inner sheath 4, a water-blocking tape 5, and a cable core layer from outside to inside; the cable core layer comprises a reinforcing piece 8 arranged in the center and a sleeve 6 which is arranged around the periphery of the reinforcing piece 8 and is internally provided with optical fibers 7, and water blocking yarns are arranged between the sleeve 6 and the reinforcing piece 7; the FRP armor layer 2 is a glass fiber composite plastic rod which is tightly arranged along the periphery of the fire-resistant composite belt 3 and is spirally glued, and the fire-resistant composite belt 3 is wrapped outside the inner sheath 4 in a longitudinal wrapping mode.

The fireproof outer sheath 1 and the fireproof inner sheath 4 both adopt ceramic polyolefin fireproof materials, and the fireproof composite belt 3 is a steel-plastic composite belt. The wall thickness of the inner sheath 4 is greater than 1 mm. The pitch diameter ratio of the FRP armor layer 2 is more than 25.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A biological-proof outdoor optical cable is characterized in that: the fireproof cable sequentially comprises a fireproof outer sheath, an FRP armor layer, a fireproof composite belt, an inner sheath, a water blocking belt and a cable core layer from outside to inside; the cable core layer comprises a reinforcing piece arranged at the center and a sleeve which is provided with optical fibers and surrounds the periphery of the reinforcing piece, and water blocking yarns are arranged between the sleeve and the reinforcing piece.

2. The biohazard-resistant outdoor optical cable of claim 1, wherein: the fire-resistant outer sheath and the fire-resistant inner sheath are both made of ceramic polyolefin fire-resistant materials.

3. The biohazard-resistant outdoor optical cable of claim 1, wherein: the wall thickness of the inner sheath is greater than 1 mm.

4. The biohazard-resistant outdoor optical cable of claim 1, wherein: the FRP armor layer is a glass fiber composite plastic rod which is tightly arranged along the periphery of the fire-resistant composite belt and is spirally glued.

5. The biohazard-resistant outdoor optical cable of claim 1, wherein: the pitch diameter ratio of the FRP armor layer is more than 25.

6. The biohazard-resistant outdoor optical cable of claim 1, wherein: the fire-resistant composite belt is wrapped outside the inner sheath in a longitudinal wrapping mode.

7. The biohazard-resistant outdoor optical cable of claim 6, wherein: the fire-resistant composite belt is a steel-plastic composite belt.