CN104269217B - Optical hybrid cable with profiled soft conductor - Google Patents

Abstract

The invention belongs to the technical field of cables, and particularly relates to an optical-electrical hybrid cable with special-shaped flexible conductors, which is characterized by comprising four optical communication units, three power transmission units, a wrapping layer for wrapping the optical communication units and the power transmission units, a corrugated aluminum pipe armor layer positioned outside the wrapping layer, and an outer sheath wrapped outside the corrugated aluminum pipe armor layer in an extrusion molding manner; one optical communication unit is located in the center of the optical-electrical hybrid cable, and the three optical communication units and the three power transmission units are distributed outside the central optical communication unit at staggered intervals. The invention has the following main beneficial effects: the optical fiber is more convenient to manufacture, easier to peel and identify, softer, less in optical fiber attenuation, easier to bend, lower in cost, lighter in weight, higher in strength and better in shielding performance.

Description

Optical hybrid cable with profiled soft conductor

technical field

The invention belongs to the technical field of cables, in particular to a photoelectric hybrid cable with special-shaped soft conductors.

Background technique

With the opening and application of 4G network, a large number of photoelectric hybrid cables are required in the signal transmission system of 4G base station. This kind of optical-electrical hybrid cable can transmit optical signals and provide power supply for remote radio unit RRU (RemoteRadioUnit).

There are many kinds of photoelectric hybrid cables for 4G base stations that are widely used at present, such as: the name is: 4G feeder type photoelectric hybrid cable, the publication number is: the patent of CN103366893A, including the cable outer sheath, it is characterized in that: the cable outer The sheath includes a wrapping layer, an aluminum welded ply layer is arranged outside the wrapping layer, an outer sheath is arranged outside the aluminum welded ply layer, and two sets of electric units are arranged inside the wrapping layer 2. Two groups of optical units and filling, the electrical unit and optical unit are arranged around the filling; the insulating layer of the electrical unit is made of PVC or XLPE, which can effectively reduce the construction cost of the base station, and has the advantages of fast construction and good stability.

The name is: A new type of photoelectric hybrid cable, and the publication number is: CN103325471A patent, which includes a central reinforcement, an optical cable, a shielded power cord, a water-blocking tape, a flame-retardant sheath, and a water-blocking tape inside the flame-retardant sheath. There is an optical cable, a central strength member and multiple shielded power cables inside the water blocking belt. The copper core is located in the center of the shielded power cable. At the center of the sleeve, optical cables and shielded power cables are evenly distributed in the enclosed space formed by the central reinforcement and the water blocking tape. It integrates the optical fiber and the power line together, which greatly saves the pipeline space. The power line is shielded by copper wire braid, which can prevent the power line from interfering with the outside world and being interfered by the outside world.

The name is: New Photoelectric Hybrid Cable, the announcement number is: CN200997325Y patent, including the central reinforcement, an optical cable and multiple shielded power cables are arranged around the central reinforcement, and water-blocking belts are provided around the optical cable and shielded power cables , The periphery of the water-blocking tape is provided with a flame-retardant sheath. It integrates the optical fiber and the power line, which greatly saves the pipeline space, and the power line is braided and shielded, which can prevent the power line from interfering with the outside world and being interfered by the outside world.

The above-mentioned patents have the following common defects: the power supply or power line is circular, occupying a large area, the overall outer diameter of the product is relatively thick, the consumption of non-conductor materials is large, and the cost is high; the overall bending performance of the cable is not ideal; the optical cable has no The outer diameter of the backup unit is thicker when there is a backup; the original clamps on the base station are not applicable.

Contents of the invention

In order to solve the above problems, the object of the present invention is to disclose a photoelectric hybrid cable with special-shaped soft conductors, which is realized by the following technical solutions.

In Embodiment 1 of the present invention, the photoelectric hybrid cable with special-shaped flexible conductor is characterized in that it includes four optical communication units, three power transmission units, and a tape layer that covers the optical communication units and power transmission units , the corrugated aluminum tube armor layer outside the cladding layer, the outer sheath that is extruded and coated outside the corrugated aluminum tube armor layer; one of the optical communication units is located in the center of the optical-electrical hybrid cable, and the three optical The communication unit and three power transmission units are distributed in staggered intervals outside the central optical communication unit; each optical communication unit consists of two filling ropes, two single-core flexible optical cables, and an optical cable covered with filling ropes and soft optical cables The sheath is composed of a filling rope and a single-core flexible optical cable that are distributed alternately at intervals; the filling rope is composed of a non-metallic reinforcement and a plastic layer coated outside the non-metallic reinforcement; the single-core flexible optical cable is composed of an optical fiber and a colored layer outside the optical fiber , a tight sleeve layer located outside the colored layer, a surrounding reinforcement located outside the tight sleeve layer, and an optical cable sheath located outside the surrounding reinforcement; each power transmission unit consists of a pair of power single wires placed correspondingly on the plane part , The color line for the identification of the power cord group, and the unit wrapping tape covering the single power line and the identification of the power cord group with the colored line. The insulating layer is a semi-cylindrical shape with a missing corner, and the semi-cylindrical planes of the two power single wires are in contact with each other.

The above-mentioned photoelectric hybrid cable with special-shaped flexible conductors, when the power single wires in the three non-central power transmission units have the same color combination, is characterized in that the power lines in the three non-central power transmission units The color lines for group identification have different colors.

For the above-mentioned photoelectric hybrid cable with special-shaped flexible conductors, when the power supply single wires in the three non-central power transmission units have different color combinations, the power line group identification color lines in the three non-central power transmission units Can not be placed.

The above-mentioned optical-electrical hybrid cable with special-shaped flexible conductor is characterized in that a tearing rope is placed longitudinally between the corrugated aluminum tube armor layers outside the cladding layer.

Further, the above-mentioned optical-electrical hybrid cable with special-shaped soft conductors is characterized in that there can be one or more rip ropes; if there are more than one, they can be arranged symmetrically along the outer edge of the tape layer.

In Embodiment 2 of the present invention, the photoelectric hybrid cable with special-shaped flexible conductors is characterized in that it includes three optical communication units, three power transmission units, a central support unit, and the optical communication unit and the power transmission unit. The tape layer, the corrugated aluminum tube armor layer located outside the tape layer, the outer sheath coated by extrusion molding outside the corrugated aluminum tube armor layer; the central support unit is located in the center of the photoelectric hybrid cable, three The optical communication unit and the three power transmission units are distributed in a staggered interval outside the central central support unit; each optical communication unit is composed of two filling ropes, two single-core soft optical cables, and the filling rope and the soft optical cable are covered. Composed of optical cable sheath, the filling rope and single-core flexible optical cable are distributed at staggered intervals; the filling rope is composed of a non-metallic strengthening member and a plastic layer wrapped outside the non-metallic strengthening member; the single-core flexible optical cable is composed of optical layer, a tight sleeve layer located outside the colored layer, a surrounding strength member located outside the tight sleeve layer, and an optical cable sheath located outside the surrounding strength member; each power transmission unit is composed of a pair of power supplies that are placed correspondingly on the plane parts The single wire, the colored wire for the identification of the power cord group, and the unit tape covering the single power cord and the colored wire for the identification of the power cord group are composed of a semicircular special-shaped soft conductor and an insulating layer wrapped outside the semicircular special-shaped soft conductor. , the insulating layer is a semi-cylindrical shape with a missing corner, the semi-cylindrical planes of the two power single wires are in contact, and the colored line for the identification of the power cord group is located at the corner part of the insulating layer.

For the photoelectric hybrid cable with special-shaped soft conductors described above, when the single power lines in the three power transmission units have the same color combination, it is characterized in that the color lines for identifying the power line group in the three power transmission units have different color.

For the above-mentioned photoelectric hybrid cable with special-shaped soft conductors, when the single power lines in the three power transmission units have different color combinations, the colored lines for identifying the power line groups in the three power transmission units may not be placed.

The above-mentioned optical-electrical hybrid cable with special-shaped flexible conductor is characterized in that a tearing rope is placed longitudinally between the corrugated aluminum tube armor layers outside the cladding layer.

Further, the above-mentioned optical-electrical hybrid cable with special-shaped soft conductors is characterized in that there can be one or more rip ropes; if there are more than one, they can be arranged symmetrically along the outer edge of the tape layer.

The invention has the following main beneficial effects: more convenient production, easier peeling, easier identification, softer, smaller attenuation of optical fiber, easier bending, lower cost, lighter weight, higher strength and better shielding performance.

Description of drawings

Fig. 1 is a schematic diagram of the cross-sectional structure of Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of an enlarged cross-sectional structure of one of the optical communication units in FIG. 1 .

FIG. 3 is an enlarged cross-sectional schematic diagram of one of the power transmission units in FIG. 1 .

Fig. 4 is a schematic diagram of the cross-sectional structure of Embodiment 2 of the present invention.

detailed description

Implementation example 1

Please refer to Fig. 1 to Fig. 3, the photoelectric hybrid cable with special-shaped flexible conductor is characterized in that it includes four optical communication units 1, three power transmission units 2, and a package covering the optical communication units and power transmission units. Belt layer 3, the corrugated aluminum tube armor layer 5 outside the cladding layer, the outer sheath 6 that is extruded and coated outside the corrugated aluminum tube armor layer; one of the optical communication units is located at the optical-electric hybrid cable In the center, three optical communication units and three power transmission units are distributed in staggered intervals outside the central optical communication unit; each optical communication unit consists of two filling ropes 10, two single-core flexible optical cables 20, and the filling rope and The optical cable sheath 30 covered by the flexible optical cable is composed of a filling rope and a single-core flexible optical cable distributed in a staggered interval; the filling rope is composed of a non-metallic strengthening member 101 and a plastic layer 102 coated outside the non-metallic strengthening member; the single-core flexible optical cable It consists of an optical fiber 201, a colored layer 202 outside the optical fiber, a tight jacket layer 203 outside the colored layer, a surrounding strength member 204 outside the tight jacket layer, and an optical cable sheath 205 outside the surrounding strength member; each A power transmission unit is composed of a pair of power single wires placed correspondingly on the plane parts, a colored line 70 for the power cord group identification, and a unit wrapping tape 60 covering the power single wire and the power cord group identification with the colored wire. The power single wire consists of a semicircle The special-shaped flexible conductor 40 and the insulating layer 50 wrapped outside the semicircular special-shaped flexible conductor are composed of a semi-cylindrical shape with a missing corner, and the semi-cylindrical planes of the two power single lines are in contact with each other. At the notch part of the layer.

The above-mentioned photoelectric hybrid cable with special-shaped flexible conductors, when the power single wires in the three non-central power transmission units have the same color combination, is characterized in that the power lines in the three non-central power transmission units The color lines for group identification have different colors.

For the above-mentioned photoelectric hybrid cable with special-shaped flexible conductors, when the power supply single wires in the three non-central power transmission units have different color combinations, the power line group identification color lines in the three non-central power transmission units Can not be placed.

The above-mentioned photoelectric hybrid cable with special-shaped soft conductor is characterized in that a tearing rope 4 is placed longitudinally between the corrugated aluminum tube armor layers outside the cladding layer.

Further, the above-mentioned optical-electrical hybrid cable with special-shaped soft conductors is characterized in that there can be one or more rip ropes; if there are more than one, they can be arranged symmetrically along the outer edge of the tape layer.

In this implementation example, the central optical communication unit is a group of backup units, which mainly play the role of emergency and maintenance during use.

Implementation example 2

Please see Fig. 4, and referring to Fig. 1 to Fig. 3, the photoelectric hybrid cable with special-shaped flexible conductor is characterized in that it includes three optical communication units 1, three power transmission units 2, a central support unit 7, and an optical communication unit And the cladding layer 3 covered by the power transmission unit, the corrugated aluminum tube armor layer 5 outside the cladding layer, the outer sheath 6 that is extruded and coated outside the corrugated aluminum tube armor layer; the central support unit Located in the center of the photoelectric hybrid cable, three optical communication units and three power transmission units are distributed in staggered intervals outside the central central support unit; each optical communication unit is composed of two filling ropes 10, two single-core soft The optical cable 20 is composed of a cable sheath 30 covered with a filling rope and a soft optical cable, and the filling rope and the single-core flexible optical cable are distributed in a staggered interval; the filling rope is composed of a non-metallic reinforcement 101 and a plastic layer coated outside the non-metallic reinforcement 102; the single-core flexible optical cable is composed of an optical fiber 201, a colored layer 202 outside the optical fiber, a tight jacket layer 203 outside the colored layer, a surrounding reinforcement 204 outside the tight jacket, and a surrounding reinforcement outside the The optical cable sheath 205 is composed of; each power transmission unit is composed of a pair of power supply single wires placed correspondingly on the plane parts, the color line 70 for the identification of the power line group, and the unit wrapping tape that wraps the single power line and the color line for the identification of the power line group 60, the power supply single wire is composed of a semicircular special-shaped soft conductor 40 and an insulating layer 50 wrapped outside the semicircular special-shaped soft conductor. The color line for group identification is located at the notch portion of the insulating layer.

For the photoelectric hybrid cable with special-shaped flexible conductors described above, when the single power wires in the three power transmission units have the same color combination, it is characterized in that the color lines for identifying the power line group in the three power transmission units have different color.

For the above-mentioned photoelectric hybrid cable with special-shaped flexible conductors, the insulation layer can be a complete semi-cylindrical shape, and the semi-cylindrical planes of the two power supply single wires are in contact; Layer pairs can be differentiated by different colors.

For the above-mentioned photoelectric hybrid cable with special-shaped soft conductors, when the single power lines in the three power transmission units have different color combinations, the colored lines for identifying the power line groups in the three power transmission units may not be placed.

The above-mentioned photoelectric hybrid cable with special-shaped soft conductor is characterized in that a tearing rope 4 is placed longitudinally between the corrugated aluminum tube armor layers outside the cladding layer.

Further, the above-mentioned optical-electrical hybrid cable with special-shaped soft conductors is characterized in that there can be one or more rip ropes; if there are more than one, they can be arranged symmetrically along the outer edge of the tape layer.

The central support unit described in this implementation example can be a plastic filling rope, or a reinforcement member with plastic on the outside, and the reinforcement member can be steel wire, glass fiber reinforced plastic or aramid yarn; it can make the photoelectric hybrid The cable is stronger or more flexible.

Of course, in the above-mentioned implementation examples, the applicant produced a photoelectric composite cable with a cross-sectional area of ⁶ mm of a semicircular special-shaped soft conductor, which adopted 1+6 regular twisting, i.e. tangential structure, optical communication unit, power transmission unit, center The diameter of the supporting units is 7mm, which is the same as the aperture of the standard optical cable junction box in the prior art, which simplifies the manufacturing process of the hybrid cable assembly in the later stage, and is also conducive to the waterproofing of the hybrid cable assembly during use. It ensures that the outer dimensions of the finished hybrid cable are the same as those of the traditional radio frequency cables used for base station construction, which facilitates the continued use of the original clamps on the base station and enhances the universality of the hybrid cable.

In the present invention, the three peripheral optical communication units and the power transmission unit can be arranged in the photoelectric composite cable in a spiral manner or in a straight-through manner.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the wrapping layer is water blocking tape or non-woven fabric or other suitable tape materials.

The photoelectric hybrid cable with special-shaped flexible conductor described in any of the above implementation examples is characterized in that the material of the outer sheath is low-density polyethylene or medium-density polyethylene or high-density polyethylene or polyvinyl chloride or low-smoke Halogenated polyethylene.

The optical-electrical hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the optical cable sheath is polyvinyl chloride or low-smoke halogen-free polyethylene.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the non-metallic reinforcement is aramid fiber yarn.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the surrounding reinforcement is aramid fiber yarn.

The optical-electrical hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the plastic layer is polyethylene or polypropylene.

The optical-electrical hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the tight sheath layer is polyvinyl chloride or low-smoke halogen-free polyethylene or nylon.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the unit wrapping tape is water blocking tape or non-woven fabric or other suitable tape materials.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the semicircular special-shaped flexible conductors are formed by twisting a plurality of thin conductor wires.

The photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that the material of the insulating layer is polyvinyl chloride or low-smoke halogen-free polyethylene.

Of course, the photoelectric hybrid cable with special-shaped flexible conductors described in any of the above implementation examples is characterized in that each optical communication unit can be covered by multiple single-core flexible optical cables, and the filling rope and multiple single-core flexible optical cables. Live fiber optic cable sheath composition.

In the present invention, the tearing rope is convenient for tearing the cable, and can be of aramid yarn type or polyester fiber type.

In the present invention, both the non-metallic reinforcement and the surrounding reinforcement can be reinforced with aramid reinforcement, which not only ensures the requirements for tensile strength when the optical cable is laid vertically, but also ensures the flexibility of the finished hybrid cable. Stress is conducive to the stability of optical fiber performance.

In the present invention, the optical communication unit can use a relatively hard LSZH sheath, which has a small shrinkage rate and good lateral pressure resistance, and can ensure performance indicators such as attenuation of the optical fiber.

In the present invention, the color lines for identification of the power cord groups have different colors to make the distinction more convenient; when the insulating layers of the power single wires in the three power transmission units have different color combinations, the power cord groups in the three power transmission units The color line for identification may not be placed, and the purpose of easy identification can also be achieved.

In the present invention, welded corrugated aluminum tubes are used for armoring, and this structure has the advantages of excellent shielding effect, lightning protection, high strength, light weight, low cost, and good bending performance.

Therefore, the present invention has the following main beneficial effects: more convenient to manufacture, easier to peel, easier to identify, softer, smaller attenuation of optical fiber, easier to bend, lower cost, lighter in weight, higher in strength, and better in shielding performance.

The present invention is not limited to the best implementation mode above, it should be understood that the concept of the present invention can be implemented in other forms, and they also fall within the protection scope of the present invention.

Claims (6)

1. A photoelectric hybrid cable with a special-shaped soft conductor, which is characterized in that it includes four optical communication units, three power transmission units, a tape layer covering the optical communication units and power transmission units, and is located between the tape layers. The outer corrugated aluminum tube armor layer, the outer sheath that is extruded and coated outside the corrugated aluminum tube armor layer; one of the optical communication units is located in the center of the optical-electrical hybrid cable, and the three optical communication units are connected to the three power cables. The transmission units are staggered and distributed outside the central optical communication unit; each optical communication unit is composed of two filling ropes, two single-core flexible optical cables, and an optical cable sheath covering the filling ropes and soft optical cables. It is distributed in a staggered interval with the single-core flexible optical cable; the filling rope is composed of a non-metallic strengthening member and a plastic layer coated outside the non-metallic strengthening member; the single-core flexible optical cable is composed of an optical fiber, a colored layer outside the optical fiber, and a colored layer outside the colored layer The tight sleeve layer, the surrounding reinforcement located outside the tight sleeve layer, and the optical cable sheath located outside the surrounding reinforcement; each power transmission unit is composed of a pair of power single wires placed correspondingly on the plane part, and the power line group is used for identification The colored wire, the unit tape covering the power single wire and the power cord group logo with the colored wire, the power single wire is composed of a semicircular special-shaped soft conductor and an insulating layer wrapped outside the semicircular special-shaped soft conductor, and the insulating layer is a missing corner Semi-cylindrical, the semi-cylindrical planes of the two power single wires are in contact, the color line for the power cord group identification is located at the missing corner of the insulation layer; the corrugated aluminum tube armor layer outside the clad layer is placed longitudinally There are tearing ropes; the said tearing ropes are one or more; when there are many, they are arranged symmetrically along the outer edge of the wrapping layer; the material of the wrapping layer is non-woven fabric. 2. The photoelectric hybrid cable with special-shaped soft conductor according to claim 1, characterized in that the material of the outer sheath is low-density polyethylene or medium-density polyethylene or high-density polyethylene or polyvinyl chloride or low-smoke Halogen-free polyethylene. 3. The photoelectric hybrid cable with special-shaped flexible conductor according to claim 2, characterized in that the material of the optical cable sheath is polyvinyl chloride or low-smoke halogen-free polyethylene. 4. The photoelectric hybrid cable with special-shaped soft conductor according to claim 3, characterized in that the material of the insulating layer is polyvinyl chloride or low-smoke halogen-free polyethylene. 5. The photoelectric hybrid cable with special-shaped soft conductor according to claim 4, characterized in that the material of the tight sheath layer is polyvinyl chloride, low-smoke halogen-free polyethylene or nylon. 6. The photoelectric hybrid cable with special-shaped flexible conductor according to claim 5, characterized in that the material of the non-metallic reinforcement is aramid fiber yarn; the material of the surrounding reinforcement is aramid fiber yarn.