CN218412983U

CN218412983U - Resistance to compression layer-stranding cable

Info

Publication number: CN218412983U
Application number: CN202221630567.3U
Authority: CN
Inventors: 万克群; 许志诚; 田海鹏; 陆志华
Original assignee: Jiangsu Vanhua Communication Technology Co ltd
Current assignee: Jiangsu Vanhua Communication Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-01-31
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a resistance to compression layer stranded optical cable, its technical essential is: including multiunit sinle silk and polyethylene oversheath, the multiunit the outside of sinle silk all is provided with the pine sleeve pipe, one side of pine sleeve pipe is provided with metal center and strengthens the core, and is a plurality of the pine sleeve pipe all twists on the metal center strengthens the core, the outside of pine sleeve pipe is provided with plastic-aluminum composite strip layer, the outside surface on plastic-aluminum composite strip layer is provided with the polyethylene inner sheath, the outside of polyethylene inner sheath is provided with the glass fiber reinforcement that a plurality of equidistance distributes on the surface, and glass fiber reinforcement makes the optical cable have stronger tensile strength, can alleviate the whole weight of optical cable simultaneously, can alleviate and lay the degree of difficulty, and glass fiber reinforcement conveniently cuts, has reduced the degree of difficulty of cable stripping, and plastic-aluminum composite strip layer has better compressive capacity, conveniently fixes a plurality of pine sleeve pipes at metal center and strengthens the core for optical cable compact structure.

Description

Resistance to compression layer-stranding cable

Technical Field

The utility model relates to a layer stranding cable technical field specifically is a resistance to compression layer stranding cable.

Background

A layer stranded optical cable is a round core stranded by a plurality of optical fiber containing tubes around a central strength member, a metallic or non-metallic strength member is located at the center of the cable, and optical fiber containing loose tubes are arranged around the strength member. The optical cable is usually laid in various ways such as overhead, underground or underwater, and during the laying process, the optical cable is usually stretched, wound, bent or extruded, and the optical cable needs to have better comprehensive properties such as tensile, compression and bending properties.

In the prior art, multiple groups of steel wires are often required to be arranged in the cable in order to improve the compression resistance of the optical cable, the optical cable is heavy when the number of the steel wires is large, the laying difficulty is increased, the difficulty of optical cable connection is increased due to the difficulty in wire stripping, and the cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resistance to compression layer stranded type optical cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a resistance to compression layer stranded optical cable, includes multiunit sinle silk and polyethylene oversheath, multiunit the outside of sinle silk all is provided with the pine sleeve pipe, loose sheathed tube one side is provided with the metal center and strengthens the core, and is a plurality of the pine sleeve pipe all twists on the metal center strengthens the core, the outside of pine sleeve pipe is provided with plastic-aluminum composite strip layer, plastic-aluminum composite strip layer's outside surface is provided with the polyethylene inner sheath, the outside of polyethylene inner sheath is provided with the glass fiber reinforcement that a plurality of equidistance distributes on the surface, the outside of glass fiber reinforcement is equipped with fire-retardant layer, the polyethylene oversheath sets up fire-retardant layer's the outside is on the surface.

Preferably, the loose tube is internally filled with a fiber paste layer, and the fiber paste layer is coated on the wire core.

Preferably, the metal central reinforcing core is a phosphated steel wire.

Preferably, the loose tube is a polyolefin loose tube.

Preferably, a water-blocking grease layer is filled between the aluminum-plastic composite belt layer and the metal central reinforcing core.

Preferably, the flame retardant layer is a glass fiber flame retardant layer.

Preferably, a water blocking yarn layer is arranged between the glass fiber reinforcing piece and the flame retardant layer, and the water blocking yarn layer is wound on the outer side surface of the glass fiber reinforcing piece.

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

in the compression-resistant layer-stranded optical cable, the mechanical strength, the compression resistance and the toughness of the optical cable are improved through the metal central reinforcing core, the aluminum-plastic composite tape layer has better compression resistance, and a plurality of loose tubes are conveniently fixed on the metal central reinforcing core, so that the optical cable is compact in structure, and the retraction of the loose tubes is reduced;

second, this resistance to compression layer strand optical cable, polyethylene inner sheath and polyethylene oversheath all have better compliance, the elongation, impact strength, thereby improve the shock resistance of optical cable, the glass fiber reinforcement that sets up through the polyethylene inner sheath outside makes the optical cable have stronger tensile strength, can alleviate the whole weight of optical cable simultaneously, can alleviate and lay the degree of difficulty, the glass fiber reinforcement is convenient to be cut, the degree of difficulty of optical cable wire stripping has been reduced, make things convenient for the installation of optical cable, be favorable to reducing the manufacturing cost of optical cable, be favorable to improving the sinle silk through fire-retardant layer at fire-retardant effect, improve barrier propterty.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a cross-sectional view of the loose tube structure of the present invention.

In the figure: 1. a wire core; 2. a polyethylene outer jacket; 3. loosening the sleeve; 4. a metal central strength core; 5. aluminum-plastic composite belt layers; 6. a polyethylene inner sheath; 7. a fiberglass reinforcement; 8. a flame retardant layer; 9. a fibrous paste layer; 10. a water-blocking grease layer; 11. a water-blocking yarn layer.

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 efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a compression-resistant layer-stranded optical cable comprises a plurality of groups of cable cores 1 and a polyethylene outer sheath 2, wherein loose tubes 3 are arranged on the outer sides of the groups of cable cores 1, a metal center reinforced core 4 is arranged on one side of each loose tube 3, the loose tubes 3 are stranded on the metal center reinforced core 4, an aluminum-plastic composite tape layer 5 is arranged on the outer side of each loose tube 3, a polyethylene inner sheath 6 is arranged on the outer side surface of the aluminum-plastic composite tape layer 5, a plurality of glass fiber reinforced parts 7 which are distributed at equal intervals are arranged on the outer side surface of the polyethylene inner sheath 6, a flame-retardant layer 8 is arranged on the outer side of each glass fiber reinforced part 7, the polyethylene outer sheath 2 is arranged on the outer side surface of the flame-retardant layer 8, and the mechanical strength, the compression resistance and the toughness of the optical cable are improved through the metal center reinforced core 4, the aluminum-plastic composite tape layer 5 has better compression resistance, a plurality of loose tubes 3 are conveniently fixed on a metal center reinforcing core 4, the optical cable is compact in structure, retraction of the loose tubes 3 is reduced, the polyethylene inner sheath 6 and the polyethylene outer sheath 2 both have better flexibility, the elongation rate and the impact strength, the impact resistance of the optical cable is improved, the glass fiber reinforcement 7 arranged outside the polyethylene inner sheath 6 enables the optical cable to have stronger tensile resistance, meanwhile, the whole weight of the optical cable can be reduced, the laying difficulty can be reduced, the glass fiber reinforcement 7 is convenient to cut off, the difficulty of stripping the optical cable is reduced, the optical cable is convenient to install, the production cost of the optical cable is favorably reduced, the flame-retardant layer 8 is favorable for improving the flame-retardant effect of the cable core 1, and the protective performance is improved.

In this embodiment, preferably, the loose tube 3 is filled with the fine paste layer 9, and the cladding of fine paste layer 9 is on sinle silk 1, fills in the loose tube 3 through fine paste layer 9, conveniently wraps up sinle silk 1, improves the protective effect of sinle silk 1.

In this embodiment, preferably, the metal center reinforcing core 4 is a phosphated steel wire, and the phosphated steel wire is a steel wire product plated with a zinc phosphide layer on the surface, and has good drawing and rust-proof properties, and the overall strength of the optical cable can be improved.

In this embodiment, the loose tube 3 is preferably a polyolefin loose tube, and polyolefin has low relative density, good chemical resistance and good water resistance; the polyolefin loose tube has the characteristics of good mechanical strength, electrical insulation and the like, and can improve the protection effect on the wire core 1.

In this embodiment, preferably, the water-blocking ointment layer 10 is filled between the aluminum-plastic composite tape layer 5 and the metal central reinforcing core 4, and the filled water-blocking ointment layer 10 can effectively prevent water, so that the corrosion of water on the inside of the optical cable is reduced.

In this embodiment, preferably, the flame retardant layer 8 is a glass fiber flame retardant layer, and the glass fiber flame retardant layer has strong heat resistance, good corrosion resistance, and high mechanical strength, and is beneficial to improving the high temperature resistance and the fire prevention effect of the optical cable while improving the structure of the optical cable.

In this embodiment, it is preferred, set up between glass fiber reinforcement 7 and the fire-retardant layer 8 with the yarn layer 11 that blocks water, the yarn layer 11 that blocks water twines on glass fiber reinforcement 7's outside surface, can completely cut off through the yarn layer 11 that blocks water that has inside the optical cable and have water to permeate, improves water-proof effects, has ensured optical cable result of use.

The structure principle is as follows: this resistance to compression layer stranded optical cable is when using, the mechanical strength of optical cable is improved to metal center reinforced core 4, compressive strength and toughness, plastic-aluminum composite strip layer 5 has better compressive capacity, conveniently fix a plurality of loose tubes 3 at metal center reinforced core 4, make optical cable compact structure, reduce the back of returning of loose tube 3, polyethylene inner sheath 6 all has better compliance with polyethylene oversheath 2, the elongation, impact strength, thereby improve the shock resistance of optical cable, glass fiber reinforcement 7 makes the optical cable have stronger tensile strength, can alleviate the whole weight of optical cable simultaneously, can alleviate the laying degree of difficulty, glass fiber reinforcement 7 conveniently cuts, the degree of difficulty of the optical cable wire stripping has been reduced, make things convenient for the installation of optical cable, fire-retardant layer 8 is favorable to improving sinle silk 1 at fire-retardant efficiency, improve barrier propterty.

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. The utility model provides a resistance to compression layer stranded optical cable, includes multiunit sinle silk (1) and polyethylene oversheath (2), its characterized in that: multiunit the outside of sinle silk (1) all is provided with loose sleeve pipe (3), one side of loose sleeve pipe (3) is provided with metal center and strengthens core (4), and is a plurality of loose sleeve pipe (3) all twists on metal center strengthens core (4), the outside of loose sleeve pipe (3) is provided with plastic-aluminum composite tape layer (5), the outside surface of plastic-aluminum composite tape layer (5) is provided with polyethylene inner sheath (6), the outside of polyethylene inner sheath (6) is provided with glass fiber reinforcement (7) that a plurality of equidistance distributes on the surface, the outside of glass fiber reinforcement (7) is equipped with fire-retardant oversheath (8), polyethylene (2) set up the outside on fire-retardant layer (8) is on the surface.

2. The optical cable of claim 1, wherein: the loose tube (3) is filled with a fiber paste layer (9), and the fiber paste layer (9) is coated on the wire core (1).

3. The optical cable of claim 1, wherein: the metal center reinforced core (4) is a phosphated steel wire.

4. The optical cable of claim 1, wherein: the loose tube (3) is a polyolefin loose tube.

5. The optical cable of claim 1, wherein: and a water-blocking grease layer (10) is filled between the aluminum-plastic composite belt layer (5) and the metal central reinforcing core (4).

6. The optical cable of claim 1, wherein: the flame-retardant layer (8) is a glass fiber flame-retardant layer.

7. The optical cable of claim 1, wherein: and a water-blocking yarn layer (11) is arranged between the glass fiber reinforcement (7) and the flame-retardant layer (8), and the water-blocking yarn layer (11) is wound on the outer side surface of the glass fiber reinforcement (7).