CN217506224U - Metal braided protection net optical cable - Google Patents

Abstract

The utility model discloses a protection network cable is woven to metal relates to the optical cable field, in order to solve the problem of optical cable protection, protection network cable is woven to metal comprises inner core (1), inner protective sheath (2), glass fiber weaving layer (3), the steel wire woven mesh layer (4) and fire-retardant oversheath (5) of establishing from inside to outside in proper order, and inner core (1) contains optic fibre (11) and reinforcing fiber layer (12) that the oversheath was established, contains many metal reinforcing wires (51) in fire-retardant oversheath (5), and the circumference interval distribution of fire-retardant oversheath (5) is followed to many metal reinforcing wires (51). The metal woven protection net optical cable adopts a structure that the glass fiber woven belt is longitudinally wrapped and the stainless steel wire woven protection net is used for protecting the inner core, so that the optical cable is effectively prevented from being bitten by animals, and excellent compression resistance and impact resistance are provided.

Description

Metal braided protection net optical cable

Technical Field

The utility model relates to an optical cable field, specific are protection network cable is woven to metal.

Background

Due to different use environments, the optical cable needs to have corresponding mechanical and environmental properties to ensure that the optical fiber is not damaged in the process of laying, installing, using and maintaining, so as to ensure stable transmission. Under the application scenes of field operation, sensing detection, backbone network wiring and the like, the transmission of the optical cable is often interrupted due to external force, particularly the biting damage of animals, so that a protective optical cable which is capable of preventing animals from biting and penetrating and is flexible, tensile and pressure-resistant is needed.

The conventional animal protection optical cable generally adopts a chemical method or a steel tape armored structure, the chemical method achieves the expelling effect by adding strong irritant chemical substances into a jacket material, but the chemical method can pollute people, water sources, laying environment and the like in the processing process; the steel tape armored structure has larger size and poorer bending property, and is not easy to be laid in construction under complex environment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of above-mentioned optical cable protection, the utility model provides a protection net optical cable is woven to metal, protection net optical cable is woven to metal adopts the fine braid over braid of glass to indulge the package and protects the inner core with the structure that the protection net was woven to stainless steel wire, has guaranteed effectively that the optical cable still provides excellent resistance to compression and shock resistance when preventing that the animal from nibbling and stinging.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a protection network optical cable is woven to metal, comprises inner core, interior protective sheath, glass fiber weaving layer, the steel wire woven mesh layer and the fire-retardant oversheath of establishing from inside to outside in proper order, and the inner core contains the optic fibre and the reinforcing fiber layer that the interior overcoat was established, contains many metal reinforcing wires in the fire-retardant oversheath, and many metal reinforcing wires are along the circumference interval distribution of fire-retardant oversheath.

The inner core contains many optic fibres, and many optic fibres are along the circumference interval distribution of inner core, and optic fibre is tight-buffered optic fibre, and the diameter of optic fibre is 0.55mm 0.05 mm.

The reinforced fiber layer is formed by filling aramid fibers or glass fibers.

The inner protective sleeve is made of thermoplastic polyurethane elastomer rubber, and the thickness of the inner protective sleeve is 3.0mm +/-0.1 mm.

The glass fiber woven layer is formed by longitudinally wrapping the inner protective sleeve with a glass fiber woven belt and then circumferentially overlapping the inner protective sleeve with the glass fiber woven belt.

The width of the circumferential lap joint is 1mm-2 mm.

The steel wire braided net layer is formed by braiding stainless steel wires, the diameter of each stainless steel wire is 0.05mm, and the braiding specification of the steel wire braided net layer is 7 strands and 16 spindles.

The metal reinforcing wire is a copper-plated steel strand.

The flame-retardant outer sheath is made of flame-retardant high-density polyethylene.

The beneficial effects of the utility model are that:

1. the inner unit adopts inner core + interior protective sheath, guarantees that the inner unit after peeling has certain resistance to compression and tensile strength, and interior protective sheath is the TPU material simultaneously, has characteristics such as good fire-retardant, wear-resisting, ageing-resistant, resistant high low temperature.

2. The internal unit is protected by adopting the structure of the glass fiber braided belt longitudinal wrapping and stainless steel wire braided protection net, so that the optical cable is effectively prevented from being bitten by animals, and good compression resistance and impact resistance are provided.

3. The copper-plated steel stranded wires are used as parallel reinforcing members, so that the optical cable is guaranteed to have an extremely high tensile force value.

4. The outer sheath of the optical cable is made of modified flame-retardant high-density polyethylene, so that the flame-retardant characteristic is improved while the excellent performances of high hardness, high tensile strength, wear resistance, corrosion resistance and the like of HDPE are kept, and the optical cable can pass a single vertical combustion test.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of the metal-braided protection mesh optical cable of the present invention.

FIG. 2 is a schematic view of circumferential overlapping after longitudinal wrapping of woven glass fiber tapes.

Description of the reference numerals:

1. an inner core; 2. an inner protective sheath; 3. a glass fiber braid layer; 4. weaving a mesh layer by using steel wires; 5. a flame retardant outer jacket;

11. an optical fiber; 12. a reinforcing fiber layer;

51. a metal reinforcing wire; 52. and (7) plating copper on the steel wire.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A metal woven protection mesh optical cable is composed of an inner core 1, an inner protection sleeve 2, a glass fiber woven layer 3, a steel wire woven mesh layer 4 and a flame-retardant outer sheath 5 which are sequentially sleeved from inside to outside, wherein the inner core 1 comprises optical fibers 11 and a reinforced fiber layer 12 which are sleeved from inside to outside, the flame-retardant outer sheath 5 comprises a plurality of metal reinforcing wires 51, and the plurality of metal reinforcing wires 51 are distributed at intervals along the circumferential direction of the flame-retardant outer sheath 5 as shown in figures 1 and 2.

In this embodiment, the inner core 1 includes a plurality of optical fibers 11, for example, the inner core 1 includes 4 optical fibers 11, the optical fibers 11 are uniformly distributed along the circumference of the inner core 1 at intervals, the optical fibers 11 are tight-buffered optical fibers, the optical fibers 11 include bare fibers and tight-buffered optical fibers, and the tight-buffered optical fibers are made of LSZH (low smoke zero halogen material).

In the present embodiment, the distance between two adjacent optical fibers 11 may be determined according to the requirement, and the diameter of the optical fiber 11 may be 0.55mm ± 0.05 mm. The inner unit adopts inner core 1+ inner protective sheath 2, and reinforcing fiber layer 12 is formed by reinforcing fiber (like aramid fiber or glass fiber) packing, and the material of preferred reinforcing fiber layer 12 is aramid fiber or glass fiber, can be like this after peeling off, the inner unit has certain resistance to compression and tensile strength.

In this embodiment, the inner protection sleeve 2 is made of the existing thermoplastic polyurethane elastomer rubber (TPU), which has good characteristics of flame retardancy, wear resistance, aging resistance, high and low temperature resistance, and the thickness of the inner protection sleeve 2 may be 3.0mm ± 0.1 mm.

In this embodiment, the glass fiber woven layer 3 is formed by longitudinally wrapping the inner protective sheath 2 (i.e. the inner unit) with a glass fiber woven tape and then circumferentially overlapping, and the glass fiber woven layer 3 can effectively prevent animals from biting while protecting the optical unit from impact, as shown in fig. 2.

Specifically, the glass fiber woven belt is of a long strip-shaped structure, the glass fiber woven belt is completely wrapped outside the inner protective sleeve 2 in the width direction, the width direction of the glass fiber woven belt is followed, the two ends of the glass fiber woven belt are in lap joint, the lap joint can be in a mode of being fixed by bonding, and the width of the circumferential lap joint can be 1mm-2mm, such as 1.5 mm.

In this embodiment, the steel wire woven mesh layer 4 is formed by weaving stainless steel wires having a diameter of 0.05mm, and the steel wire woven mesh layer 4 has a size of 7 strands and 16 bars, i.e., the steel wire woven mesh layer 4 is made of stainless steel wires by a weaving process of 7 strands and 16 bars. The steel wire woven mesh layer 4 can ensure the torsion resistance of the optical cable and prevent animals from being bitten by teeth.

In the present embodiment, the flame-retardant outer sheath 5 contains a plurality of metal reinforcing wires 51, and the plurality of metal reinforcing wires 51 are uniformly distributed along the circumferential direction of the flame-retardant outer sheath 5, for example, the flame-retardant outer sheath 5 contains two metal reinforcing wires 51, and the metal reinforcing wires 51 extend along the axial direction of the metal-woven protection-mesh optical cable.

Preferably, the metal reinforcing wire 51 is a copper-plated steel strand formed by stranding a plurality of copper-plated steel wires 52. The metal reinforcing wire 51 is arranged in the flame-retardant outer sheath 5 and serves as a parallel reinforcing member, the strength is high, the elastic modulus is high, and meanwhile copper plated on the surface of the steel strand can resist environmental corrosion, so that the extremely high tensile force value is guaranteed to be provided for the optical cable.

In this embodiment, the material of the flame-retardant outer sheath 5 is the existing flame-retardant high-density polyethylene, and preferably, the material of the flame-retardant outer sheath 5 is the existing halogen-free flame-retardant high-density polyethylene. The halogen-free flame-retardant high-density polyethylene is selected, so that the flame-retardant characteristic is increased while the excellent performances of high hardness, high tensile strength, wear resistance, corrosion resistance and the like of HDPE are kept, and the optical cable can pass a single vertical combustion test.

The method of making the metal-braided protective-mesh cable (also referred to as a cable having a metal-braided protective mesh) is described below.

1. The optical fiber 11 and the reinforced fiber (such as aramid fiber or glass fiber) are sent to a machine head of a first extruder to be extruded to manufacture an inner unit, and the inner unit comprises an inner core 1 and an inner protective sleeve 2 which are sleeved inside and outside.

2. The inner unit is longitudinally wrapped with a glass fiber braided band and then circumferentially lapped, and a glass fiber braided layer 3 is formed outside the inner unit.

3. The stainless steel wire is braided into a steel wire braided net layer 4 outside the glass fiber braided layer 3 by 7 strands of 16 ingots, and an inner blank is formed.

4. And (3) feeding the metal reinforcing wire 51 and the inner blank into a machine head of a second extruder for extrusion, and manufacturing a flame-retardant outer sheath 5 outside the steel wire woven mesh layer 4 to manufacture the metal woven protection mesh optical cable, wherein the outer diameter of the metal woven protection mesh optical cable is 6.8mm +/-0.3 mm, as shown in figure 1.

The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and technical scheme, embodiment and the embodiment all can the independent assortment use.

Claims (9)

1. The metal-woven protection mesh optical cable is characterized by comprising an inner core (1), an inner protection sleeve (2), a glass fiber woven layer (3), a steel wire woven net layer (4) and a flame-retardant outer sheath (5), wherein the inner core (1) is sequentially sleeved with the inner protective sleeve (2), the glass fiber woven layer, the steel wire woven net layer (4) and the flame-retardant outer sheath (5), the inner core (1) contains optical fibers (11) and a reinforced fiber layer (12), the flame-retardant outer sheath (5) contains a plurality of metal reinforcing wires (51), and the plurality of metal reinforcing wires (51) are distributed at intervals along the circumferential direction of the flame-retardant outer sheath (5).

2. The metal-braided protective mesh optical cable according to claim 1, wherein the inner core (1) contains a plurality of optical fibers (11), the plurality of optical fibers (11) are distributed at intervals along the circumferential direction of the inner core (1), the optical fibers (11) are tight-buffered optical fibers, and the diameter of the optical fibers (11) is 0.55mm ± 0.05 mm.

3. A metal-braided protective mesh optical cable according to claim 1, wherein the reinforcing fiber layer (12) is formed by aramid fiber or glass fiber filling.

4. A metal-braided protective optical network cable according to claim 1, wherein the inner protective sheath (2) is made of thermoplastic polyurethane elastomer rubber, and the thickness of the inner protective sheath (2) is 3.0mm ± 0.1 mm.

5. A metal-braided protective netting cable according to claim 1, characterized in that the glass fiber braid (3) is formed by circumferential overlapping of a glass fiber braid over the inner protective sheath (2) after longitudinal wrapping.

6. The metal woven protective mesh optical cable of claim 5, wherein the circumferential lap joint has a width of 1mm to 2 mm.

7. A metal braided protective netting cable according to claim 1, characterized in that the steel wire braided netting layer (4) is braided from stainless steel wires having a diameter of 0.05mm, the braided gauge of the steel wire braided netting layer (4) being 7 strands of 16 gauge.

8. A metal braided protective netting cable according to claim 1, characterized in that the metal reinforcing wires (51) are copper plated steel strands.

9. The metal-braided protective cable of claim 1, wherein the flame-retardant outer sheath (5) is made of flame-retardant high-density polyethylene.

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