CN112363288A - High-density layer-stranded ribbon optical cable, high-density layer-stranded optical cable and high-density layer-stranded cable - Google Patents

High-density layer-stranded ribbon optical cable, high-density layer-stranded optical cable and high-density layer-stranded cable Download PDF

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Publication number
CN112363288A
CN112363288A CN202011265301.9A CN202011265301A CN112363288A CN 112363288 A CN112363288 A CN 112363288A CN 202011265301 A CN202011265301 A CN 202011265301A CN 112363288 A CN112363288 A CN 112363288A
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China
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protective layer
layer
optical
tangent
reinforcing piece
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CN202011265301.9A
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Chinese (zh)
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蔡洪祥
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Changshu Shantong Power Technology Co ltd
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Changshu Shantong Power Technology Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4403—Optical cables with ribbon structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/441—Optical cables built up from sub-bundles
    • G02B6/4414—Optical cables built up from sub-bundles with internal serpentine waveguides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

The application belongs to the technical field of optical cables and communication, and relates to a high-density layer-stranded ribbon optical cable which is provided with a central reinforcing piece and a plurality of optical units distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer is coated outside the optical units, and a protective sleeve layer is coated outside the protective layer; the optical unit is characterized by comprising a plurality of stacked optical fiber ribbons and loose tubes positioned outside the optical fiber ribbons, wherein the loose tubes are in an elliptic cylinder shape, the length directions of the optical fiber ribbons are stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, two points of each loose tube tangent to the protective layer are provided, and a gap is formed between the short axis of each loose tube and the protective layer. The application also discloses a high-density layer stranded optical cable and a cable. The invention has the following main beneficial effects: the structure is more stable and reliable, the diameter of the product is smaller, the material consumption is less, and the cost is lower.

Description

High-density layer-stranded ribbon optical cable, high-density layer-stranded optical cable and high-density layer-stranded cable
Technical Field
The invention belongs to the technical field of optical cables, electric power and communication, and particularly relates to a high-density layer-stranded ribbon optical cable, a high-density layer-stranded optical cable and a high-density layer-stranded electric cable.
Background
In the prior art, both YD/T901 and YD/T981 disclose layer stranded optical cables, but the layer stranded ribbon cable is provided with a plurality of round loose sleeves and a plurality of optical fiber ribbons inside, and the structure ensures that the product has large outer diameter and high cost; therefore, the cost is lower and the outer diameter is smaller in the industry, so that the method is suitable for the ever-decreasing winning price of operators and does not reduce the performance of products; however, no effective measures are available at present.
On the other hand, the corresponding situation exists in the cable, the cylindrical insulated wire is usually used for power transmission in the cable, and when the requirement on the power transmission capacity of a single insulated wire is higher, the conductor of the single insulated wire needs to have a larger diameter, so that the diameter of the whole circular cable is increased, the dead space is more, the consumption of various peripheral materials is increased, and the product cost is increased.
Therefore, the corresponding technical problems need to be solved urgently in the industry.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a high-density layer-stranded optical fiber ribbon cable, a high-density layer-stranded optical fiber cable and an electric cable, which are realized by the following technical solutions.
A high-density layer-stranded ribbon optical cable comprises a central reinforcing piece and a plurality of optical units distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent; the optical unit is characterized by comprising a plurality of stacked optical fiber ribbons and loose tubes positioned outside the optical fiber ribbons, wherein the loose tubes are in an elliptic cylinder shape, the length directions of the optical fiber ribbons are stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, two points of each loose tube tangent to the protective layer are provided, and a gap is formed between the short axis of each loose tube and the protective layer.
A high-density layer-stranded optical cable is provided with a central reinforcing piece and a plurality of optical units distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer is coated outside the optical units, and a protective sleeve layer is coated outside the protective layer; the light unit is characterized by comprising a plurality of optical fibers and loose tubes positioned outside the optical fibers, the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, two points are arranged at the tangent point of each loose tube and the protective layer, and a gap is arranged between the short axis of each loose tube and the protective layer.
A high-density layer-stranded optical cable is provided with a central reinforcing piece and a plurality of optical units distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer is coated outside the optical units, and a protective sleeve layer is coated outside the protective layer; the light unit is characterized by comprising a plurality of optical fibers and loose tubes positioned outside the optical fibers, wherein the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, the tangent point of each loose tube and the protective layer is one, and the short axis of each loose tube and the protective layer are tangent to each other.
A high-density layer-stranded ribbon optical cable comprises a central reinforcing piece and a plurality of optical units distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent; the optical unit is characterized in that the optical unit is composed of a plurality of stacked optical fiber ribbons and loose tubes positioned outside the optical fiber ribbons, the loose tubes are in an elliptic cylinder shape, the length direction of the optical fiber ribbons is stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, the tangent point of each loose tube and the protective layer is one, and each loose tube and the protective layer are tangent to the short axis of the loose tube.
In this application, the material of the central reinforcement is steel wire or copper wire or iron wire or glass fiber reinforced plastic.
In this application, the protective layer is a water-blocking tape or a non-woven fabric or a glass fiber tape or a polyester binder.
In this application, the protective layer is spirally or longitudinally wrapped outside the light unit.
In this application, the material of the sheath layer is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In the present application, an optical fiber ribbon is composed of a plurality of optical fibers and an adhesive layer covering the optical fibers.
In the present application, the optical fiber ribbon is of an edge bonding type or an integral cladding type.
In this application, the material of the loose tube is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke halogen-free polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
A high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, a protective layer is coated outside the insulated wires, and a sheath layer is coated outside the protective layer; the insulated wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section positioned outside the conductor, wherein the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated wire is circumscribed with the inner edge of the protective layer, two points of tangency between each insulated wire and the protective layer are provided, and a gap is formed between the short axis of the insulating layer and the protective layer.
A high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, a protective layer is coated outside the insulated wires, and a sheath layer is coated outside the protective layer; the insulated conducting wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section, wherein the insulating layer is positioned outside the conductor, the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated conducting wire is circumscribed with the inner edge of the protective layer, the point where each insulated conducting wire is tangent to the protective layer is one, and each insulated conducting wire and the protective layer are tangent to the short axis of the insulated conducting wire.
The invention has the following main beneficial effects: the structure is more stable and reliable, the diameter of the product is smaller, the material consumption is less, and the cost is lower.
Drawings
Fig. 1 is a schematic perspective view of a dissected segment of the example 1.
Fig. 2 is an enlarged cross-sectional structure diagram of fig. 1.
Fig. 3 is a schematic perspective view of a dissected segment of the example 2.
Fig. 4 is an enlarged cross-sectional view of fig. 3.
Fig. 5 is a schematic perspective view of a dissected segment of the example 3.
Fig. 6 is an enlarged cross-sectional view of fig. 5.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 1-central reinforcement, 2-optical unit, 3-protective layer, 4-sheath layer, 21-optical fiber ribbon, 22-loose tube, 23-optical fiber.
Detailed Description
Examples 1
Referring to fig. 1 and 2, a high-density layer-stranded ribbon optical cable comprises a central reinforcement member 1 and four optical units 2 distributed around the periphery of the central reinforcement member, wherein adjacent optical units are tangent to a tangent point a, the central reinforcement member is circumscribed with the optical units, a protective layer 3 is coated outside the optical units, and a sheath layer 4 is coated outside the protective layer 3; the optical unit 2 is characterized by comprising a plurality of stacked optical fiber ribbons 21 and loose tubes 22 positioned outside the optical fiber ribbons, wherein the loose tubes are in an elliptic cylinder shape, the length directions of the optical fiber ribbons are stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is tangent to the inner edge of the protective layer at a point B, two points are tangent to the protective layer at each loose tube, and a gap is formed between the short axis of each loose tube and the protective layer.
EXAMPLES example 2
Referring to fig. 3 and 4, a high-density layer-stranded optical cable includes a central strength member 1, four optical units 2 distributed around the periphery of the central strength member, adjacent optical units are tangent to a tangent point a, the central strength member is circumscribed with the optical units, the optical units are coated with a protective layer 3, and the protective layer 3 is coated with a sheath layer 4; the light unit 2 is characterized by comprising a plurality of optical fibers 23 and loose tubes 22 positioned outside the optical fibers, the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is tangent to the inner edge of the protective layer at a point B, two points of each loose tube tangent to the protective layer are provided, and a gap is formed between the short axis of each loose tube and the protective layer.
EXAMPLE 3
Referring to fig. 5 and 6, a high-density layer-stranded optical cable includes a central strength member 1, four optical units 2 distributed around the periphery of the central strength member, adjacent optical units are circumscribed, the central strength member is circumscribed with the optical units, the optical units are coated with a protective layer 3, and the protective layer 3 is coated with a sheath layer 4; the light unit 2 is characterized by comprising a plurality of optical fibers 23 and loose tubes 22 positioned outside the optical fibers, wherein the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is tangent to the inner edge of the protective layer at a point B, the tangent point of each loose tube to the protective layer is one, and the tangent short axis of each loose tube to the protective layer is tangent to the short axis of the loose tube.
Referring to fig. 1 and 2, a high-density layer-stranded ribbon optical cable includes a central strength member 1, four optical units 2 distributed around the periphery of the central strength member, adjacent optical units are circumscribed, the central strength member is circumscribed with the optical units, the optical units are coated with a protective layer 3, and the protective layer 3 is coated with a sheath layer 4; the optical unit 2 is characterized by comprising a plurality of stacked optical fiber ribbons 21 and loose tubes 22 positioned outside the optical fiber ribbons, wherein the loose tubes are in an elliptic cylinder shape, the length directions of the optical fiber ribbons are stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is tangent to the inner edge of the protective layer at a point B, the tangent point of each loose tube to the protective layer is one, and the tangent point of each loose tube to the protective layer is tangent to the short axis of the loose tube.
In any of the above embodiments of the present application, the number of the light units is not limited to four, and may be other numbers not less than three.
In any of the embodiments described above, the central reinforcing member may have a protective layer of extruded plastic in addition to the central reinforcing member.
In this application, the material of the central reinforcement is steel wire or copper wire or iron wire or glass fiber reinforced plastic.
In this application, the protective layer is a water-blocking tape or a non-woven fabric or a glass fiber tape or a polyester binder.
In this application, the protective layer is spirally or longitudinally wrapped outside the light unit.
In this application, the material of the sheath layer is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In the present application, an optical fiber ribbon is composed of a plurality of optical fibers and an adhesive layer covering the optical fibers.
In the present application, the optical fiber ribbon is of an edge bonding type or an integral cladding type.
In this application, the material of the loose tube is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke halogen-free polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In the present application, the type of the optical fiber is G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1d or OM1 or OM2 or OM3 or OM 4.
Referring to fig. 1 to 6, a high-density cable has a central reinforcing member, a plurality of insulated wires distributed around the periphery of the central reinforcing member, adjacent insulated wires being circumscribed, the central reinforcing member being circumscribed with the insulated wires, the insulated wires being externally coated with a protective layer, the protective layer being externally coated with a sheath layer; the insulated wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section positioned outside the conductor, wherein the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated wire is circumscribed with the inner edge of the protective layer, two points of tangency between each insulated wire and the protective layer are provided, and a gap is formed between the short axis of the insulating layer and the protective layer.
A high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, a protective layer is coated outside the insulated wires, and a sheath layer is coated outside the protective layer; the insulated conducting wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section, wherein the insulating layer is positioned outside the conductor, the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated conducting wire is circumscribed with the inner edge of the protective layer, the point where each insulated conducting wire is tangent to the protective layer is one, and each insulated conducting wire and the protective layer are tangent to the short axis of the insulated conducting wire.
In the high-density cable described above, the sheath layer may not be present, or another plurality of protective layers may be provided between the protective layer and the sheath layer.
Similarly, in the optical cable described above, the sheath layer may not be present, or another plurality of protective layers may be provided between the protective layer and the sheath layer.
In the high-density cable, the conductor is made of copper or aluminum or alloy or copper-clad aluminum.
In the above high-density cable, the insulating layer is made of plastic.
In the high-density cable, the material of the central reinforcing member may be metal or plastic or the inner part may be metal and the outer part may be plastic.
In the high-density cable, the material of the central reinforcing part can be foam material, so that the filling function is only realized, and in addition, the inside of the central reinforcing part can be hollow, so that the ventilation, the heat dissipation and the weight reduction are facilitated; even when the structure is stable, the center reinforcement is omitted.
The protective layer and the sheath layer of the high-density cable can be made of the same materials as those of the optical cable.
In the application, the conductor is lengthened, so that the cross section of the conductor is elliptical, and can be in other shapes, the short axis direction is shortened relative to the cylindrical shape, the overall diameter of the product is reduced, the size of the central reinforcing part is reduced, the diameters of the protective layer and the sheath layer are reduced, the diameter of the product is reduced, the coiling is more convenient, the disc is saved, the consumption of various materials of the product is reduced, the comprehensive cost of the materials is reduced, the transportation cost is lower, the storage is more convenient, and the like, and the conductive cable has multiple beneficial technical effects; although the circular and elliptical structures are conventional structures, the technical field is limited by industry standards and inertial thinking, and the technical field has almost no corresponding motivation to apply to the layer-stranded optical cable and the electric cable, but only to the application of the single insulated wire with the circular and elliptical cross section; the application in the application creatively solves a problem which is more troubling to the cable industry, so that the application obtains the technical effect which is not expected in the prior art; compared with the prior art, the consumption of the non-conductor material in the application is saved by 45 percent like a single insulated wire with an effective conductor sectional area of 50 square millimeters and a four-core cable; which is not achievable by conventional means, i.e. unexpected.
In this application, in implementation examples 1, 2, loose sleeve pipe and protective layer are tangent two places, loose sleeve pipe and central reinforcement are tangent, and adjacent loose sleeve pipe is tangent for loose sleeve pipe position is more fixed, and layer stranded optical cable among the prior art is because circular loose sleeve pipe, so only one place tangent with the protective layer, so this application structure is more stable, more reliable.
In the present application, since the elliptical loose tube is used, the major axis is obviously larger than the minor axis, while the width of the optical fiber ribbon is much larger than the thickness, as is apparent from YD/981; the optical fiber ribbon is more placed to the loose sleeve pipe of event this application for the inside space utilization of loose sleeve pipe is higher, also can make the size of loose sleeve pipe littleer, the minor axis is shorter, and such effect makes protective layer diameter littleer, restrictive coating diameter littleer outside the loose sleeve pipe, so make the material consume with less, the cost is lower.
In this application, the axis of reinforcement and every loose sheathed tube tangent line just constitute a plurality of planes when having a plurality of loose sheathed tubes like this in the coplanar, and this plane is called this loose sheathed tube tangent line face, and the plane at every loose sheathed tube major axis place is perpendicular with this loose sheathed tube tangent line face mutually, and in this application, on the cross section, the diameter extension line of reinforcement passes through loose sheathed tube minor axis.
The invention has the following main beneficial effects: the structure is more stable and reliable, the diameter of the product is smaller, the material consumption is less, and the cost is lower.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims (10)

1. A high-density layer-stranded ribbon optical cable is provided with a central reinforcing piece (1) and a plurality of optical units (2) distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer (3) is coated outside the optical units, and a sheath layer (4) is coated outside the protective layer (3); the optical unit (2) is characterized by comprising a plurality of stacked optical fiber ribbons (21) and loose tubes (22) arranged outside the optical fiber ribbons, the loose tubes are in an elliptic cylinder shape, the length direction of the optical fiber ribbons is stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, two points of each loose tube tangent to the protective layer are provided, and a gap is formed between the short axis of each loose tube and the protective layer.
2. A high-density layer-stranded ribbon optical cable is provided with a central reinforcing piece (1) and a plurality of optical units (2) distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer (3) is coated outside the optical units, and a sheath layer (4) is coated outside the protective layer (3); the optical unit (2) is characterized by comprising a plurality of stacked optical fiber ribbons (21) and loose tubes (22) arranged outside the optical fiber ribbons, the loose tubes are in an elliptic cylinder shape, the length direction of the optical fiber ribbons is stacked in parallel with the long axis direction of the loose tubes, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, the point where each loose tube is tangent to the protective layer is one, and the short axis of each loose tube and the short axis of each protective layer are tangent to the loose tubes.
3. A high-density layer-stranded optical ribbon cable according to claim 1 or claim 2, wherein the material of said central strength member is steel or copper wire or glass fiber reinforced plastic.
4. A high-density layer-stranded optical ribbon cable according to claim 1 or claim 2, wherein said protective layer is a water-blocking tape or a non-woven fabric or a glass fiber tape or a polyester binder.
5. A high-density layer-stranded optical ribbon cable according to claim 1 or claim 2, wherein the material of the sheath layer is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
6. A high-density layer-stranded optical ribbon cable according to claim 1 or claim 2, wherein the material of said loose tube is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
7. A high-density layer stranded optical cable is provided with a central reinforcing piece (1) and a plurality of optical units (2) distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer (3) is coated outside the optical units, and a sheath layer (4) is coated outside the protective layer (3); the light unit (2) is characterized by comprising a plurality of optical fibers (23) and loose tubes (22) positioned outside the optical fibers, wherein the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, two points of each loose tube tangent to the protective layer are provided, and a gap is formed between the short axis of each loose tube and the protective layer.
8. A high-density layer stranded optical cable is provided with a central reinforcing piece (1) and a plurality of optical units (2) distributed around the periphery of the central reinforcing piece, wherein adjacent optical units are externally tangent, the central reinforcing piece is externally tangent with the optical units, a protective layer (3) is coated outside the optical units, and a sheath layer (4) is coated outside the protective layer (3); the light unit (2) is characterized by comprising a plurality of light-guide fibers (23) and loose tubes (22) positioned outside the light-guide fibers, wherein the loose tubes are in an elliptic cylinder shape, the outer edge of each loose tube is circumscribed with the inner edge of the protective layer, the tangent point of each loose tube and the protective layer is one, and the short axis of each loose tube and the short axis of the loose tube are tangent to the protective layer.
9. A high-density layer-stranded optical cable according to claim 7 or claim 8, wherein the material of the central strength member is steel wire or copper wire or iron wire or glass fiber reinforced plastic; the material of the loose tube is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
10. A high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, a protective layer is coated outside the insulated wires, and a sheath layer is coated outside the protective layer; the insulated wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section positioned outside the conductor, wherein the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated wire is circumscribed with the inner edge of the protective layer, two points of tangency between each insulated wire and the protective layer are provided, and a gap is formed between the short axis of the insulating layer and the protective layer;
or the high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein the adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, the insulated wires are externally coated with a protective layer, and the protective layer is externally coated with a sheath layer; the insulated conducting wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section, wherein the insulating layer is positioned outside the conductor, the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated conducting wire is circumscribed with the inner edge of the protective layer, the point where each insulated conducting wire is tangent to the protective layer is one, and each insulated conducting wire and the protective layer are tangent to the short axis of the insulated conducting wire;
or the high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein the adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, and the insulated wires are externally coated with protective layers; the insulated wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section positioned outside the conductor, wherein the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated wire is circumscribed with the inner edge of the protective layer, two points of tangency between each insulated wire and the protective layer are provided, and a gap is formed between the short axis of the insulating layer and the protective layer;
or the high-density cable is provided with a central reinforcing piece and a plurality of insulated wires distributed around the periphery of the central reinforcing piece, wherein the adjacent insulated wires are externally tangent, the central reinforcing piece is externally tangent with the insulated wires, and the insulated wires are externally coated with protective layers; the insulated conducting wire is characterized by comprising a conductor with an oval cross section and an insulating layer with an oval cross section, wherein the insulating layer is positioned outside the conductor, the long axis of the conductor is parallel to the long axis of the insulating layer, the short axis of the conductor is parallel to the short axis of the insulating layer, the outer edge of each insulated conducting wire is circumscribed with the inner edge of the protective layer, the point where each insulated conducting wire is tangent to the protective layer is one, and each insulated conducting wire and the protective layer are tangent to the short axis of the insulated conducting wire.
CN202011265301.9A 2020-11-13 2020-11-13 High-density layer-stranded ribbon optical cable, high-density layer-stranded optical cable and high-density layer-stranded cable Withdrawn CN112363288A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113640932A (en) * 2021-09-02 2021-11-12 江苏长飞中利光纤光缆有限公司 Central beam tube type optical cable and central beam tube type ribbon optical cable
CN117031668A (en) * 2023-10-10 2023-11-10 江苏永鼎股份有限公司 Nonmetal outdoor optical cable for communication

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113640932A (en) * 2021-09-02 2021-11-12 江苏长飞中利光纤光缆有限公司 Central beam tube type optical cable and central beam tube type ribbon optical cable
CN113640932B (en) * 2021-09-02 2023-02-03 长飞光电线缆(苏州)有限公司 Central beam tube type optical cable and central beam tube type ribbon optical cable
CN117031668A (en) * 2023-10-10 2023-11-10 江苏永鼎股份有限公司 Nonmetal outdoor optical cable for communication
CN117031668B (en) * 2023-10-10 2023-12-15 江苏永鼎股份有限公司 Nonmetal outdoor optical cable for communication

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