CN203760218U - Field operation anti-bending and anti-interference optical power composite cable - Google Patents

Abstract

The utility model discloses a field operation anti-bending and anti-interference optical power composite cable comprising a shielding insulating cable core, a drain wire, bearing fibers, an optical unit, a total shielding layer and an external sheath layer. The shielding insulating cable core, the drain wire, the bearing fibers and the optical unit are distributed in the external sheath layer. The total shielding layer wraps outside the shielding insulating cable core and the optical unit. An aluminum-plastic composite tape is applied to act as the shielding layer so that interference and overhearing generated between insulating wires can be prevented, and anti-interference effect is realized on the insulating wires; a signal is effectively guided by adopting the drain wire, and tensile strength of the cable is greatly increased by adopting aramid fibers; and the optical unit is effectively protected by adopting a loose sleeve spiral steel tape armored layer, the cable can be prevented from being flattened or broken via pressing, and bending capability of the cable can be increased. The laying requirement is substantially met by the structure, anti-bending and anti-interference capability is enhanced and thus the cable is adaptive to use requirements in a field operation environment.

Description

A kind of optical-electrical hybrid cable with anti-bending and interference in field

technical field

The utility model relates to a photoelectric hybrid cable, in particular to a field-combat anti-bending and interference photoelectric hybrid cable.

Background technique

Due to the poor bending resistance of traditional optical cables, especially after being mixed with cables, the bending resistance is even worse, the transmission capacity of the cables is insufficient, and it is easy to crosstalk, but it cannot be removed due to the role of electricity transmission. Therefore, it is necessary to provide a new technical solution to solve the above problems.

Utility model content

In order to solve the above problems, the utility model provides a field anti-bending and interference photoelectric hybrid cable, which organically combines optical cables and cables, and meets the functions of anti-bending and anti-interference, and is especially suitable for use in field environments.

The technical scheme that the utility model adopts is:

A field-bending and interference-resistant photoelectric hybrid cable, which includes a shielded insulating cable core, a drain wire, a load-bearing fiber, an optical unit, a total shielding layer and an outer sheath layer, and the shielded insulating cable core, drain wire, load-bearing Both the fiber and the optical unit are distributed in the outer sheath layer, and the overall shielding layer is wrapped around the shielded insulating cable core and the optical unit;

The shielded and insulated cable core includes a plurality of shielded and insulated cable conductors, each shielded and insulated cable conductor is extruded with a layer of ethylene-tetrafluoroethylene insulation layer, and a layer of aluminum-plastic composite is wrapped around the ethylene-tetrafluoroethylene insulation layer. with shielding layer;

The load-bearing fiber is composed of multiple aramid fibers, and every two aramid fibers are twisted in pairs. One pair of aramid fibers is used as the center line, and the aramid fiber used as the center line is covered with a polyurethane sheath. The remaining pairs are respectively connected to the shielded insulating cable core, Optical unit twisting;

The optical unit is sequentially composed of a plurality of primary coated multimode optical fibers, a low-smoke halogen-free secondary coating core layer and a loose-tube spiral steel tape armor layer from the inside to the outside.

Each shielded insulated cable conductor is stranded silver plated copper.

The drain wire is composed of a silver-plated copper stranded wire.

The overall shielding layer is braided by silver-plated round copper wires.

The outer sheath layer is extruded from polyurethane.

The beneficial effects of the utility model: the use of aluminum-plastic composite tape as a shielding layer not only prevents interference and crosstalk between insulating wires, but also plays an anti-interference effect on the insulating wire itself; the use of drainage wires to guide signals effectively, and the use of aramid fibers The tensile strength of the cable is greatly increased; the loose-tube spiral steel tape armor layer is used to effectively protect the optical unit from being flattened and broken by the cable, and to increase the bending capacity of the cable. Such a structure significantly meets the laying requirements, improves the anti-bending and anti-interference capabilities, and is suitable for use in field environments.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model.

Fig. 2 is a schematic cross-sectional view of the shielded insulating cable core in Fig. 1 .

FIG. 3 is a schematic cross-sectional view of the light unit in FIG. 1 .

Among them: 1. Shielded insulating cable core, 2. Drainage wire, 3. Bearing fiber, 4. Polyurethane sheath, 5. Light unit, 6. Overall shielding layer, 7. Outer sheath layer, 8. Shielded insulated cable conductor , 9, ethylene - tetrafluoroethylene insulation layer, 10, aluminum-plastic composite tape shielding layer, 11, optical fiber, 12, low-smoke halogen-free secondary core layer, 13, loose sleeve spiral steel tape armor layer.

Detailed ways

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the embodiments and accompanying drawings. The embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

As shown in Figures 1 to 3, a field anti-bending and interference photoelectric hybrid cable of the present utility model includes a shielded insulating cable core 1, a drain wire 2, a load-bearing fiber 3, an optical unit 5, a total shielding layer 6 and The outer sheath layer 7, the shielded insulating cable core 1, the drain wire 2, the load-bearing fiber 3 and the optical unit 5 are all distributed in the outer sheath layer 7, and the total shielding layer 6 is wrapped around the shielded insulating cable core 1 and the optical unit 5; The shielded and insulated cable core 1 includes 4 shielded and insulated cable conductors 8 (shown as 4 in Fig. 1), and each shielded and insulated cable conductor 8 is a silver-plated copper stranded wire, and each shielded and insulated cable conductor 8 is extruded with a A layer of ethylene-tetrafluoroethylene insulating layer 9, wrapping a layer of aluminum-plastic composite tape shielding layer 10 outside the ethylene-tetrafluoroethylene insulating layer 9; the load-bearing fiber 3 is composed of 12 aramid fibers (4 shown in Figure 1 root), the aramid fiber type is 3120D, every two pairs of aramid fibers are twisted, one pair of aramid fiber is used as the center line, and the aramid fiber as the center line is covered with a polyurethane sheath 4, and the remaining 5 pairs are respectively connected to the shielded insulating cable core 1, light The unit 5 is twisted; the optical unit 5 is sequentially armored by six primary coated multimode optical fibers 11 (6 shown in Figure 1), a low-smoke zero-halogen secondary coating core layer 12 and a loose-tube spiral steel tape from the inside to the outside Layer 13 composition. The optical fiber 11 is suitably selected with a specification of 62.2/12 5 μm.

The drain wire 2 is composed of a 19/0.16mm silver-plated copper strand; the overall shielding layer 6 is braided by silver-plated round copper wires; the outer sheath layer 7 is extruded from polyurethane.

The application of aluminum-plastic composite tape as the shielding layer not only prevents interference and crosstalk between the insulated wires, but also plays an anti-interference effect on the insulated wire itself; the use of drain wires effectively guides the signal, and the use of aramid fibers greatly increases the tensile strength of the cable Increase; the loose sleeve spiral steel tape armor layer is used to effectively protect the optical unit, prevent it from being flattened and broken by the cable, and increase the bending capacity of the optical cable. Such a structure significantly meets the laying requirements, improves the anti-bending and anti-interference capabilities, and is suitable for use in field environments.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model in any other form, and any modifications or equivalent changes made according to the technical essence of the utility model still belong to the utility model. Scope of protection claimed.

Claims (5)

1. A kind of field war anti-bending and interference photoelectric hybrid cable, it is characterized in that: it comprises shielding insulated cable core, drain wire, bearing fiber, optical unit, total shielding layer and outer sheath layer, and described shielding insulated cable core , drain wires, load-bearing fibers and optical units are all distributed in the outer sheath layer, and the total shielding layer is wrapped around the shielded insulating cable core and the optical unit; The shielded and insulated cable core includes a plurality of shielded and insulated cable conductors, each shielded and insulated cable conductor is extruded with a layer of ethylene-tetrafluoroethylene insulation layer, and a layer of aluminum-plastic composite is wrapped around the ethylene-tetrafluoroethylene insulation layer. with shielding layer; The load-bearing fiber is composed of multiple aramid fibers, and every two aramid fibers are twisted in pairs. One pair of aramid fibers is used as the center line, and the aramid fiber used as the center line is covered with a polyurethane sheath. The remaining pairs are respectively connected to the shielded insulating cable core, Optical unit twisting; The optical unit is sequentially composed of a plurality of primary coated multimode optical fibers, a low-smoke halogen-free secondary coating core layer and a loose-tube spiral steel tape armor layer from the inside to the outside. 2. A field-bending and interference-resistant photoelectric hybrid cable according to claim 1, characterized in that: each shielded and insulated cable conductor is a silver-plated copper strand. 3. A field-bending and interference-resistant optoelectronic hybrid cable according to claim 1, characterized in that: the drain wire is composed of a silver-plated copper twisted wire. 4. A field-bending and interference-resistant photoelectric hybrid cable according to claim 1, characterized in that: the overall shielding layer is braided by silver-plated round copper wires. 5. A field bending and interference-resistant photoelectric hybrid cable according to claim 1, characterized in that: the outer sheath layer is made of polyurethane extrusion.