CN216749385U

CN216749385U - Layer-stranded armored tensile photoelectric hybrid cable

Info

Publication number: CN216749385U
Application number: CN202123447350.7U
Authority: CN
Inventors: 冯学虎; 吴燕祥; 刘步勇; 李国帅; 彭劲国
Original assignee: Jiangsu Huamai Photoelectric Technology Co ltd
Current assignee: Jiangsu Huamai Photoelectric Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-14
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to a layer-stranded armored tensile photoelectric hybrid cable which comprises a cable core, an inner sheath layer, an armor layer and an outer sheath layer, wherein the inner sheath layer is arranged on the cable core; the cable core comprises a metal reinforcing piece and a cable core sheath, the metal reinforcing piece is arranged at the center of the cable core, an optical unit and an electric unit are arranged on the periphery of the metal reinforcing piece, and the cable core sheath is coated on the outer sides of the optical unit and the electric unit through extrusion molding; the inner sheath layer is of a double-layer nylon structure and covers the outer side of the cable core; the armor layer is formed by wrapping a metal composite belt on the outer side of the inner sheath layer; be provided with non-metal reinforcement between oversheath layer and the armor, two non-metal reinforcement symmetries set up the both sides at the armor. According to the utility model, the tensile strength of the inner cable core is improved by the metal reinforcing part, the mechanical strength and the tensile strength of the whole cable are improved by the inner sheath layer and the armor layer, the nonmetal reinforcing part is arranged outside the armor layer, and the nonmetal reinforcing part is coated by the outer sheath layer through extrusion molding, so that the tensile strength of the whole photoelectric hybrid cable is further improved.

Description

Layer-stranded armored tensile photoelectric hybrid cable

Technical Field

The utility model relates to the technical field of cable manufacturing, in particular to a layer-stranded armored tensile photoelectric hybrid cable.

Background

The photoelectric mixed cable is a photoelectric communication mixed line which is formed by a certain number of optical fibers and feeders according to a certain mode and is used for realizing optical signal and power transmission.

The mixed cable of current photoelectricity on the market, the inside structure of cable is too single, receives big pulling force and pressure in complicated service environment such as strong wind, appears fracture or impaired condition easily, can lead to optical signal's transmission to be interrupted, influences communication line steady operation.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the problem that the photoelectric hybrid cable is easy to break in complex environments such as strong wind and the like in the prior art, and a layer-stranded armored tensile photoelectric hybrid cable is needed to be designed, so that the protective layer structure on the outer side of the cable core is changed, the whole photoelectric hybrid cable has better tensile property, and the photoelectric hybrid cable can adapt to severe environments such as strong wind and the like.

In order to solve the technical problem, the utility model provides a layer-stranded armored tensile photoelectric hybrid cable which comprises a cable core, an inner sheath layer, an armor layer and an outer sheath layer;

the cable core comprises a metal reinforcing piece and a cable core sheath, wherein the metal reinforcing piece is arranged at the center of the cable core, an optical unit and an electric unit are arranged on the periphery of the metal reinforcing piece, and the cable core sheath is coated on the outer sides of the optical unit and the electric unit through extrusion molding;

the inner sheath layer is of a double-layer nylon structure and is coated on the outer side of the cable core;

the armor layer is a metal composite belt, and the metal composite belt is wound and wrapped on the outer side of the inner sheath layer;

the oversheath layer cladding is in the outside of armor, just the oversheath layer with be provided with non-metal reinforcement between the armor, two non-metal reinforcement symmetry sets up the both sides of armor.

In one embodiment of the utility model, the cable core sheath, the optical unit and the electric unit are filled with water-blocking cable paste.

In one embodiment of the present invention, the optical unit includes an optical fiber bundle and a loose tube disposed outside the optical fiber bundle, and a fiber paste is filled between the optical fiber bundle and the loose tube.

In one embodiment of the utility model, the fiber bundle is a non-dispersion shifted single mode fiber; the fiber paste is thixotropic water-blocking fiber paste; the loose sleeve material is a PBT loose sleeve.

In one embodiment of the utility model, the electrical unit comprises a copper conductor and an insulating layer, the insulating layer being wrapped outside the copper conductor.

In one embodiment of the utility model, the material of the cable core sheath is high-density polyethylene.

In one embodiment of the utility model, a tear string is further provided between the light unit, the electrical unit and the metal reinforcement.

In one embodiment of the utility model, the tearing rope is made of water-blocking aramid fiber.

In one embodiment of the utility model, the non-metallic reinforcement material is a glass fiber reinforced plastic.

In one embodiment of the present invention, the outer jacket layer is a low smoke, zero halogen, flame retardant polyolefin.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the layer-stranded armored tensile photoelectric hybrid cable, the metal reinforcing piece in the cable core can improve the tensile property of the whole cable core; the cable core sheath plays a role in protecting the optical unit and the electric unit in the cable core; the inner jacket layer adopts a double-layer nylon structure, has better tensile property and smaller mass; the armor layer can resist external acting force due to the characteristics of the material, so that mechanical protection is provided for laying of the communication cable in various application occasions and the like, and the stability and reliability of application are ensured; and secondly, the nonmetal reinforcing parts arranged on two sides of the armor layer further increase the tensile strength of the whole cable.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a cross-sectional view of the construction of a hybrid cable according to the utility model;

figure 2 is a schematic structural view of a cable core according to the utility model;

the specification reference numbers indicate: 1. a light unit; 2. an electrical unit; 3. a metal reinforcement; 4. a cable core sheath; 5. an inner jacket layer; 6. an armor layer; 7. an outer jacket layer; 8. a non-metallic reinforcement; 9. tearing the rope; 11. a fiber optic bundle; 12. loosening the sleeve; 13. fiber paste; 21. a copper conductor; 22. an insulating layer.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1, a cross-sectional structural view of the photoelectric hybrid cable of the present invention is a stranded armored tensile photoelectric hybrid cable, which includes a cable core, an inner sheath layer 5, an armor layer 6, and an outer sheath layer 7; the cable core comprises a metal reinforcing part 3 and a cable core sheath 4, the metal reinforcing part 3 is arranged at the central position of the cable core, an optical unit 1 and an electric unit 2 are arranged on the periphery of the metal reinforcing part 3, and the cable core sheath 4 is coated on the outer sides of the optical unit 1 and the electric unit 2 through extrusion molding; the inner sheath layer 5 is of a double-layer nylon structure, and the inner sheath layer 5 is coated on the outer side of the cable core; the armor layer 6 is a metal composite belt, and the metal composite belt is wound and wrapped on the outer side of the inner sheath layer 5; the oversheath layer 7 cladding is in the outside of armor 6, and is provided with non-metallic reinforcement 8 between oversheath layer 7 and the armor 6, and two non-metallic reinforcement 8 symmetries set up the both sides at armor 6.

It can be seen that, this use is novel to be adopted novel structure, has made the improvement to the mixed cable of photoelectricity from inside to outside, promotes tensile strength. Specifically, the metal reinforcing part 3 is arranged in the cable core, and the optical unit 1 and the electric unit 2 are twisted around the metal reinforcing part 3, so that the tensile strength of the cable core can be improved; the inner sheath layer 5 is of a double-layer nylon structure and is sleeved outside the cable core, and the nylon has good tensile resistance, so that the tensile resistance is further improved due to the double-layer structure; secondly, the weight of nylon is lighter, reduces the quality of whole cable. The armor layer 6 adopts the metal composite belt, can fundamentally increase the mechanical strength of whole cable, prevents to receive the too big cable fracture that causes of external force. The outer jacket layer 7 is then as the outermost protection of whole mixed cable of photoelectricity, increases nonmetal reinforcement 8 between jacket layer and armor 6, and nonmetal reinforcement 8's quality is light, and impact resistance is strong, makes whole cable stand strong wind weather, guarantees the normal use of whole mixed cable of photoelectricity.

Furthermore, water-blocking cable paste is filled between the cable core sheath 4 and the optical unit 1 and the electric unit 2; specifically, the water-blocking cable paste can play a waterproof role and can resist fire at the same time.

Further, referring to fig. 2, the optical unit 1 includes an optical fiber bundle 11 and a loose tube 12, the loose tube 12 is disposed outside the optical fiber bundle 11, and a fiber paste 13 is filled between the optical fiber bundle 11 and the loose tube 12; the optical fiber bundle 11 is a non-dispersion shifted single mode fiber; the fiber paste 13 is thixotropic water-blocking fiber paste 13; the loose tube 12 is made of PBT material, namely the loose tube 12.

Specifically, the loose tube 12 is used to constrain and fix the optical fiber bundle 11, and as a preferred scheme of the present invention, the optical fiber bundle 11 uses a non-dispersion displacement single mode fiber, so that the loss of transmission signals is small, and large-capacity ultra-long distance transmission is realized. The fiber paste 13 is a thixotropic water-blocking fiber paste 13, protects the optical fiber, prevents the optical fiber from microbending loss caused by stress damage brought by the outside, and improves the tensile strength; secondly, the water-swelling water-blocking type water-blocking agent has high water absorption speed and high water absorption rate. The loose tube 12 is made of PBT material, the PBT material has high strength, on one hand, the tensile strength of the whole optical unit 1 can be increased, and on the other hand, the self strength can reduce the pressure on the optical fiber bundle 11 and reduce the attenuation of transmission signals.

Further, the electrical unit 2 includes a copper conductor 21 and an insulating layer 22, and the insulating layer 22 covers the outer side of the copper conductor 21.

In a preferred embodiment of the present invention, the electric unit 2 uses a copper conductor 21 as a medium for transmitting electricity, and an insulating layer 22 is coated outside the copper conductor 21; the whole insulating layer 22 adopts a skin-foam-skin insulating process, wherein an inner skin layer is extruded outside the copper conductor 21 to serve as a solid layer, the solid layer has better adhesiveness with the copper conductor 21 and the foamed insulating layer 22, the foamed insulating layer 22 has an insulating effect, and the outer skin layer serves as a protective layer of the whole electric unit 2 to improve the mechanical strength and the surface quality of the whole electric unit 2.

Further, the cable core sheath 4 is made of high density polyethylene. Specifically, as cable core sheath 4, through the mode of extrusion molding with optical unit 1 with electric unit 2 cladding, high density polyethylene structure itself is inseparable, and the hardness is great, can effectual improvement cable core mechanical strength, prevents that optical unit 1 from receiving the signal attenuation that external extrusion caused the transmission.

Furthermore, a tearing rope 9 is arranged among the light unit 1, the electric unit 2 and the metal reinforcing piece 3; the tearing rope 9 is made of water-blocking aramid fiber.

Specifically, the tearing rope 9 is arranged between the optical unit 1 and the electric unit 2, and the optical unit 1 and the electric unit 2 can be separated through the tearing rope 9 in the cable laying operation process, so that the laying and connection of the cable are facilitated; as preferred scheme, the material of tearing rope 9 is waterproofing type aramid fiber, not only can be waterproof, tears rope 9 to a certain extent and has also increased the tensile strength of cable.

Further, the non-metal reinforcement 8 is made of glass fiber reinforced plastic; in the embodiment, the non-metal reinforcement 8 is made of glass fiber reinforced plastic, so that the strength is high and the corrosion is resistant; in another embodiment, the glass fiber reinforced plastic is replaced by aramid fiber reinforced plastic, and the material has the advantages of high specific strength, high elastic modulus, good heat resistance, excellent flame retardance, light weight and the like. The two materials are easy to obtain and low in manufacturing cost.

Further, the outer sheath layer 7 is low-smoke halogen-free flame-retardant polyolefin; specifically, the low-smoke halogen-free flame-retardant polyolefin generates little smoke under the condition of flame combustion, and the released gas does not contain halogen elements and is non-toxic (low-toxicity); when a fire disaster happens, the harm to instruments and equipment to human bodies can be greatly reduced. As a preferable scheme, flame retardant polyethylene can be selected as the outer sheath layer 7, which can effectively achieve a flame retardant effect.

As a preferred scheme of the present invention, in the aspect of the selection of the metal composite tape material, an aluminum-plastic composite tape, a steel-plastic composite tape or a stainless steel-plastic composite tape can be adopted; the aluminum-plastic composite belt has the advantages of light weight and good ductility, and the mass of the whole cable can be reduced. In another embodiment, the steel-plastic composite belt and the stainless steel-plastic composite belt are selected, and the steel-plastic composite belt has the characteristics of high strength and strong corrosion resistance.

In conclusion, the tensile strength of the cable is optimized from multiple aspects, and structurally, the metal reinforcing part 3 is arranged at the center of the cable core, and the optical unit 1 and the electric unit 2 are twisted on the outer side of the metal reinforcing part 3, so that the tensile strength of the cable core is improved; the double-layer nylon structure has the characteristics of light weight and high tensile strength; the metal composite belt is used as the armor layer 6 of the utility model, thus fundamentally improving various mechanical strengths of the cable; nonmetal reinforcement 8 sets up in the both sides of armor 6, and the mode cladding that passes through the extrusion molding with oversheath layer 7 is in the outside, has further increased tensile strength and the wearability of cable itself. In the aspect of material selection, the material with light weight and high strength is selected, and various performances of the utility model are optimized. The photoelectric hybrid cable line is not easy to damage or break when being subjected to large tension and pressure in complex environments such as strong wind and the like, and stable operation of the photoelectric hybrid cable line is ensured.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. The utility model provides a layer stranded armor tensile photoelectricity hybrid cable which characterized in that: the cable comprises a cable core, an inner sheath layer, an armor layer and an outer sheath layer;

2. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: and water-blocking cable paste is filled between the cable core sheath and the optical unit and between the cable core sheath and the electrical unit.

3. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: the optical unit comprises an optical fiber bundle and a loose tube, the loose tube is arranged on the outer side of the optical fiber bundle, and fiber paste is filled between the optical fiber bundle and the loose tube.

4. The layer-stranded armored tensile opto-electrical hybrid cable of claim 3, wherein: the optical fiber bundle is a non-dispersion displacement single-mode optical fiber; the fiber paste is thixotropic water-blocking fiber paste; the loose sleeve material is a PBT loose sleeve.

5. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: the electric unit comprises a copper conductor and an insulating layer, wherein the insulating layer is coated on the outer side of the copper conductor.

6. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: the cable core sheath is made of high-density polyethylene.

7. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: a tearing rope is further arranged among the light unit, the electric unit and the metal reinforcing piece.

8. The layer-stranded armored tensile opto-electrical hybrid cable of claim 7, wherein: the tearing rope is made of water-blocking aramid fiber.

9. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: the non-metal reinforcing piece is made of glass fiber reinforced plastic.

10. The layer-stranded armored tensile opto-electrical hybrid cable of claim 1, wherein: the outer sheath layer is low-smoke halogen-free flame-retardant polyolefin.