A new type of pre-buried optoelectronic composite cable

Abstract

The present invention provides a novel pre-buried optoelectronic composite cable, comprising an optical unit, an electrical unit, a central reinforcing member, a reserved unit, and a high temperature resistant tape layer, a tape layer, and an outer sheath sequentially coated on the cable core formed by the optical unit, the electrical unit, the central reinforcing member, and the reserved unit; the reserved unit comprises a copper tube, a steel wire rope arranged inside the copper tube, and a copper tube insulating layer arranged outside the copper tube. The present invention is suitable for areas with complex environments, and can also be used to lay cables that meet later needs in later stages.

Description

Technical Field

[0001] The invention belongs to the technical field of cable manufacturing, and in particular relates to a novel pre-buried photoelectric composite cable. Background Art

[0002] Optoelectronic composite cable is a cable composed of an insulated core and an optical transmission unit with the ability to transmit electrical energy and optical communication. As the demand for high-speed and diversified networks becomes more and more urgent, 5G technology is about to arrive. Its technical core is ultra-dense heterogeneous networks. This determines that one of the components of the 5G network, the base station, must be located in any area with complex natural environments. Therefore, higher and higher requirements are placed on the characteristics of optoelectronic composite cables and their ability to adapt to complex and harsh environments.

[0003] In addition, due to the ever-changing external environment, new cables often need to be added, that is, secondary processing is performed on the laying site. Not only is the construction space limited, but it is also time-consuming, labor-intensive, and inefficient. In addition, high requirements are placed on the operators. It is necessary to avoid the possible problems of loose cable bundling, cable sagging between brackets, cable crossing, chaotic routing, etc. in the secondary laying of cables. It is also necessary to avoid wear and damage to the laid cables, which will reduce the service life of the cables and bring safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a novel pre-buried optoelectronic composite cable, which is not only adaptable to areas with complex environments, but also can be laid later to meet later needs.

[0005] To achieve the above object, the technical solution of the present invention is implemented as follows:

[0006] A novel pre-buried optoelectronic composite cable comprises an optical unit, an electrical unit, a central reinforcing member, a reserved unit, and a cable core formed by the optical unit, the electrical unit, the central reinforcing member, and the reserved unit, which are sequentially coated with a high-temperature resistant tape layer, a tape layer, and an outer sheath; the reserved unit comprises a copper tube, a steel wire rope arranged in the copper tube, and a copper tube insulation layer arranged outside the copper tube, and the copper tube insulation layer is extruded cross-linked polyethylene XLPE insulation.

[0007] Furthermore, the cable core is filled with environmentally friendly highly flame-retardant glass fiber rope.

[0008] Furthermore, the conductor of the electrical unit is made of annealed soft copper wire, and the conductor is provided with cross-linked polyethylene insulation tightly extruded on the conductor.

[0009] Furthermore, the electrical unit is filled with environmentally friendly highly flame-retardant glass fiber rope.

[0010] Furthermore, the optical fiber of the optical unit is provided with a low-temperature resistant, low-smoke, halogen-free sheath.

[0011] Furthermore, the outer sheath is a low-smoke halogen-free polyolefin sheath.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The special design of the cable and the use of special materials used in the present invention greatly improve the versatility of the cable and its ability to adapt to harsh environments;

[0014] 2. The product of the present invention has excellent properties such as wear resistance, UV resistance (cracking resistance), tensile resistance, anti-aging, flexible bending resistance, oil resistance, low temperature resistance, corrosion resistance, flame retardancy, lightning protection, termite resistance, anti-toothed animal bite, tensile resistance, etc., which solves a series of performance problems of ordinary optical-electric composite cables in complex environments, such as cracking, easy damage, and easy aging;

[0015] 3. The reserved copper tubes and steel wire ropes designed in the present invention can be used to add cables again according to the needs of the scene in the environment where construction has already been carried out, which greatly reduces the construction cost and construction time; avoids the problems of high difficulty and safety hazards caused by secondary laying; reduces the damage to the surrounding environment caused by secondary construction, reduces laying costs, and improves space utilization;

[0016] 4. The present invention adopts a hollow copper tube as a reserved pipeline, which enhances the strength of the reserved pipeline; the insulating layer arranged outside the hollow copper tube not only plays an insulating role, but also increases the soft buffering degree required when the reserved pipeline contacts other wire cores, and will not bring safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0018] in:

[0019] 1. Optical unit; 2. Electrical unit;

[0020] 3. Central reinforcement member; 4. High temperature resistant wrapping tape;

[0021] 5. Wrapping tape; 6. Copper tube;

[0022] 7. Steel wire rope; 8. Copper tube insulation layer;

[0023] 9. Outer sheath. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] In the description of the present invention, when a component is said to be "fixed" on another component, it may be directly on the other component, or there may be a component in the middle. When a component is described as "connected" to another component, it may be directly connected to the other component, or there may be a component in the middle. When a component is described as "set on" another component, it may be directly set on the other component or there may be a component in the middle.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] like Figure 1 As shown, the present invention specifically includes:

[0030] Part 1: electrical unit 2; the conductor of the electrical unit 2 is made of 99.9999% annealed oxygen-free flexible copper wire, and the elongation of the annealed copper wire is controlled to ensure the roundness and softness of the soft conductor; the insulation material is cross-linked polyethylene (XLPE); the cross-linked polyethylene insulation is extruded and tightly wrapped on the conductor, with no visible bubbles and impurities on the cross section, a round appearance, sufficient cross-linking and easy to peel off from the conductor; the filling is environmentally friendly high flame retardant glass fiber rope; the core colors are red, blue, yellow and blue;

[0031] Part 2: Optical unit 1; the optical fiber model can be B1.3 single-mode optical fiber, and the sheath is made of low-temperature resistant low-smoke halogen-free sheath material; the optical fiber color spectrum is determined according to customer needs, and can be blue or orange;

[0032] The third part: a reserved unit; including a copper tube 6, a steel wire rope 7 arranged inside the copper tube, and a copper tube insulation layer 8 arranged outside the copper tube;

[0033] Part 4: Central reinforcement member 3;

[0034] The process control of cabling is to use environmentally friendly high flame retardant glass fiber rope for filling to ensure the same insulation tension of each strand. At the same time, a copper tube 6 with a thickness of 0.10 mm is added during cabling, and a steel wire rope 7 is added to the copper tube 6 at the same time. The insulation layer of the copper tube 6 is extruded cross-linked polyethylene (XLPE) insulation.

[0035] A layer of high temperature resistant tape 4 is wrapped around the cable core as a high temperature resistant tape layer, and a layer of tape 5 is further wrapped around the high temperature resistant tape layer as a tape layer.

[0036] The outer sheath 9 is a low-smoke halogen-free polyolefin sheath. The outer sheath 9 is extruded by using an extrusion die with a large extrusion force, and is directly extruded on the cable core with the wrapping tape 5 to ensure that the gaps in the cable core are tightly filled. The surface should be smooth, round, and basically uniform in color, and there should be no visible bubbles and impurities on the cross section.

[0037] The utility model discloses that when it is necessary to add cables again, only the reserved power cable copper tube is opened, the newly added cables are connected to the steel wire traction rope in a reliable manner, and reasonable traction is performed on the other end of the copper tube, so that the cables to be laid can be placed in the predetermined position, which not only improves the efficiency but also avoids the problems of loose cable bundling, cable sagging between brackets, cable crossing, chaotic wiring, etc. during the second laying, and avoids the potential safety hazards caused by wear and damage to the laid cables.

[0038] The present invention adopts a hollow copper tube as a reserved pipeline, which enhances the strength of the reserved pipeline and avoids damage to the pipeline when a new cable is pulled; at the same time, an insulating layer arranged outside the hollow copper tube not only insulates the new cable, but also increases the softness required when the reserved pipeline contacts other wire cores, so that the wire cores are not worn or damaged due to collision and friction between the reserved pipeline and other wire cores, thereby avoiding potential safety hazards.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of pre-buried optoelectronic composite cable, characterized in that: It includes an optical unit, an electrical unit, a central reinforcing member, a reserved unit, and a high-temperature resistant tape layer, a tape layer, and an outer sheath sequentially coated on the cable core formed by the optical unit, the electrical unit, the central reinforcing member, and the reserved unit; the reserved unit includes a copper tube, a steel wire rope arranged in the copper tube, and a copper tube insulation layer arranged outside the copper tube, and the copper tube insulation layer is extruded cross-linked polyethylene XLPE insulation; The cable core is filled with environmentally friendly highly flame-retardant glass fiber rope; The conductor of the electrical unit is made of annealed soft copper wire, and the conductor is provided with cross-linked polyethylene insulation, which is tightly extruded on the conductor; The electrical unit is filled with environmentally friendly highly flame-retardant glass fiber rope; The optical fiber of the optical unit is provided with a low-temperature resistant, low-smoke, halogen-free sheath; The outer sheath is a low-smoke halogen-free polyolefin sheath.

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