CN216696794U

CN216696794U - Indoor and outdoor dual-purpose self-supporting optical cable

Info

Publication number: CN216696794U
Application number: CN202123321542.3U
Authority: CN
Inventors: 魏志明; 祝宜军; 李恒兵; 詹燕
Original assignee: Hefei Lasun Communication Co ltd
Current assignee: Hefei Lasun Communication Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-07
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses an indoor and outdoor dual-purpose self-supporting optical cable which belongs to the technical field of communication and comprises an outer sheath layer, wherein a reinforcement is arranged on the inner side of the outer sheath layer, a cable opening rope is arranged between the reinforcement and the outer sheath layer, the reinforcement is coated on the outer wall of a loose tube, an optical fiber is arranged in the inner cavity of the loose tube, and a plurality of groups of reinforcing rods are symmetrically arranged in the inner cavity of the outer sheath layer. The optical cable outer sheath is made of halogen-free environment-friendly materials, all materials do not contain halogen, smoke released during combustion is little, secondary damage caused by fire disasters and fire disasters is avoided and reduced as much as possible, a plurality of groups of reinforcing rods are symmetrically arranged in an inner cavity of the outer sheath layer, the effects of resisting compression and tension are mainly achieved, the overall bearing capacity of the optical cable is improved, and the service life of the optical cable is prolonged.

Description

Indoor and outdoor dual-purpose self-supporting optical cable

Technical Field

The utility model relates to the technical field of communication, in particular to an indoor and outdoor dual-purpose self-supporting optical cable.

Background

Indoor outer dual-purpose optical cable that appears in the existing market generally includes the optic fibre that sets gradually from inside to outside, optic fibre filling ointment, tight sleeve and sheath, and this kind of indoor outer dual-purpose optical cable can use under indoor and outdoor two kinds of environment, but current self-supporting indoor outer dual-purpose optical cable structural strength is still relatively poor, and the optical cable receives the great structure of tension to receive the damage easily when rolling up and accomodating, can appear cracked condition when laying. Therefore, a novel photoelectric composite cable is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an indoor and outdoor self-supporting optical cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an indoor outer dual-purpose self-supporting optical cable, includes the oversheath layer, the inboard of oversheath layer is equipped with the reinforcement, be equipped with between reinforcement and the oversheath layer and open the hawser, the reinforcement cladding is on loose sheathed tube outer wall, loose sheathed tube inner chamber is equipped with optic fibre, the inner chamber symmetry of oversheath layer is equipped with the multiunit reinforcing bar.

Further, the reinforcing rod is an FRP nonmetal reinforcing rod.

Furthermore, the number of reinforcing rods is four, wherein two reinforcing rods are arranged in an up-down symmetrical mode, and the other two reinforcing rods are arranged in a left-right symmetrical mode.

Further, the reinforcing piece is a glass yarn layer or an aramid yarn layer.

Furthermore, thixotropic water-blocking type fiber paste is filled in the loose tube.

Further, the outer sheath layer is a halogen-free low-smoke flame-retardant outer sheath.

Furthermore, the optical fiber is a colored optical fiber, and the optical fiber is spirally wound and bundled by colored yarns.

Further, the optical fiber is a 200 μm diameter optical fiber, and the diameter of the central sleeve is changed according to the capacity of the optical fiber.

Further, a fireproof mica tape layer is arranged on the outer layer of the loose tube.

Compared with the prior art, the utility model has the beneficial effects that:

1. the outer sheath layer is a halogen-free low-smoke flame-retardant outer sheath. The halogen-free environment-friendly material is adopted, all materials do not contain halogen, the smoke quantity released during combustion is small, and secondary damage caused by fire disasters and fire disasters is avoided and reduced as much as possible;

2. the inner side of the outer sheath layer is provided with the reinforcing part, so that the loose tube can be well covered and protected, a certain tensile effect and a certain time-delay heat conduction effect are achieved, and the internal optical fiber can be better protected;

3. the inner chamber symmetry of oversheath layer is equipped with the multiunit reinforcing bar, mainly plays the effect of resistance to compression tensile, improves the holistic holding capacity of optical cable.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. an outer jacket layer; 2. a reinforcement; 3. opening a cable; 4. loosening the sleeve; 5. an optical fiber; 6. fiber paste; 7. a reinforcing rod.

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, the present invention provides a technical solution: an indoor and outdoor dual-purpose self-supporting optical cable comprises an outer sheath layer 1, wherein the outer sheath layer 1 is a halogen-free low-smoke flame-retardant outer sheath. Adopting halogen-free environment-friendly materials, bombarding the insulating layer by using high-energy electron elements generated by an electron accelerator, breaking molecular chains to form crosslinking again, namely, an irradiation crosslinking process, wherein all the materials do not contain halogen, and the smoke quantity released during combustion is little, so that fire disasters and secondary damage caused by the fire disasters are avoided and reduced as much as possible;

the inner side of the outer sheath layer 1 is provided with the reinforcing piece 2, the reinforcing piece 2 is a glass yarn layer or an aramid yarn layer, and when the glass yarn layer is adopted, the glass yarn is soft, so that the loose tube 4 can be well covered and protected; meanwhile, the glass yarn has the advantages of light weight, high tensile strength, slow heat transfer, good instantaneous ultrahigh temperature resistance and the like, plays a certain role in tensile strength and delayed heat conduction, and can better protect the internal optical fiber 5; when the glass yarn is bitten by organisms, the capillary glass fiber causes stabbing pain to the oral cavity of the glass yarn, prevents the glass yarn from being further damaged and can play a biological protection role greatly; when the aramid yarn layer is adopted, the aramid yarn has the special performances of small density, very high tensile modulus, higher breaking strength, lower breaking elongation and the like; the high-temperature-resistant optical cable reinforcing unit material can keep inherent stability, very low shrinkage, low creep and very high glass transition temperature, has high corrosion resistance and non-conductivity, has strong chemical resistance except strong acid and strong alkali, and is a superior optical cable reinforcing unit material. Certainly, the glass yarn layer or the aramid yarn layer can be adopted at the same time, the two groups of layers are stacked, and the glass yarn layer is positioned on the outer side of the aramid yarn layer;

the mooring rope opening rope 3 is arranged between the reinforcing part 2 and the outer sheath layer 1, the mooring rope opening rope 3 is made of high-strength aramid fiber, the mooring rope opening rope 3 can be used for conveniently assembling related connectors in the construction process, and the high-strength aramid fiber has the characteristics of high impact resistance, high wear resistance, high chemical substance resistance and high thermal degradation resistance and can be conveniently and better worked;

the reinforcing piece 2 is coated on the outer wall of the loose tube 4, the loose tube 4 is made of PBT material, has high heat resistance, toughness, fatigue resistance, self-lubrication, low friction coefficient, low weather resistance and water absorption rate which are only 0.1 percent, still keeps various physical properties (including electrical property) in a humid environment, electric insulation property, hot water, alkali, acid and oil resistance, can be rapidly crystallized at low temperature, has good formability,

the outer layer of the loose tube 4 can also be provided with a fire-resistant mica tape layer which has excellent high-temperature resistance and combustion resistance, and basically has no volatilization of harmful smoke when burning in open fire, so that the product is not only effective but also very safe when being used for cables;

the optical fiber 5 is arranged in the inner cavity of the loose tube 4, the optical fiber 5 is a colored optical fiber, the optical fiber 5 is spirally wound and bundled by colored yarn, the optical fiber 5 adopts an optical fiber with the diameter of 200 mu m, the diameter of the central tube 32 is changed according to the capacity of the optical fiber 5, and the outer diameter of the loose tube 4 with the capacity of 24-core optical fiber 5 is 1.6 mm; according to the number of the optical fibers 5, a colored special yarn is used for distinguishing optical fiber units, and the colored yarn is spirally wound and bundled by taking 12 colored optical fibers as a group; 24-core optical fibers need two groups of optical fibers to be bundled into relatively independent units through yarns of two colors, 36-core optical fibers need three groups of optical fibers to be bundled into relatively independent units through yarns of three colors, and the like; meanwhile, thixotropic water-blocking type fiber paste 6 is filled in the loose tube 4 to prevent water vapor or water outside the optical cable from entering the optical cable through the optical cable connecting section end in a matching manner;

the inner cavity of the outer sheath layer 1 is symmetrically provided with a plurality of groups of reinforcing rods 7, the reinforcing rods 7 are preferably FRP non-metal reinforcing rods, and the FRP non-metal reinforcing rods have the characteristics of high specific strength and large specific modulus; the material performance is designable; the corrosion resistance and the durability are good; the thermal expansion coefficient is similar to that of concrete; the number of the reinforcing rods 7 is at least four, wherein two reinforcing rods 7 are arranged in an up-down symmetrical mode, the other two reinforcing rods 7 are arranged in a left-right symmetrical mode, if the reinforcing rods are continuously added, the number of the reinforcing rods needs to be increased symmetrically, for example, 6 and 8 are analogized in sequence, the compression-resistant tensile effect is mainly achieved, and the overall bearing capacity of the optical cable is improved.

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 outer dual-purpose self-supporting optical cable, includes oversheath layer (1), its characterized in that: the inboard of oversheath layer (1) is equipped with reinforcement (2), be equipped with between reinforcement (2) and oversheath layer (1) and open hawser (3), reinforcement (2) cladding is on the outer wall of pine sleeve pipe (4), the inner chamber of pine sleeve pipe (4) is equipped with optic fibre (5), the inner chamber symmetry of oversheath layer (1) is equipped with multiunit reinforcing bar (7).

2. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the reinforcing rod (7) is an FRP nonmetal reinforcing rod.

3. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the number of the reinforcing rods (7) is four, wherein two reinforcing rods (7) are arranged in an up-down symmetrical mode, and the other two reinforcing rods (7) are arranged in a left-right symmetrical mode.

4. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the reinforcing piece (2) is a glass yarn layer or an aramid yarn layer.

5. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the loose tube (4) is filled with thixotropic water-blocking type fiber paste (6).

6. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the outer sheath layer (1) is a halogen-free low-smoke flame-retardant outer sheath.

7. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the optical fiber (5) is a colored optical fiber, and the optical fiber (5) is spirally wound and bundled by colored yarns.

8. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the optical fiber (5) adopts 200 mu m diameter optical fiber, and the diameter of the central sleeve (32) is changed according to the capacity of the optical fiber (5).

9. An indoor and outdoor dual-purpose self-supporting optical cable according to claim 1, wherein: the outer layer of the loose tube (4) is provided with a fireproof mica tape layer.