Aluminum strip steel pipe optical fiber composite overhead ground wire

Abstract

The utility model belongs to the technical field of power transmission cables, and relates to an aluminum strip steel tube optical fiber composite overhead ground wire, which comprises a central stainless steel optical unit, an optical fiber positioned in the central stainless steel optical unit, an aluminum tube sleeved outside the stainless steel optical unit, and an outer stranded wire layer stranded outside the aluminum tube, the two sides of the aluminum strip are both arranged to be inclined faces. The aluminum pipe is formed by bending and welding aluminum strips with the same thickness, so that the wall thickness of the aluminum pipe is smaller, the thickness is more consistent, the tensile strength is high, the outer diameter and the quality of a product are reduced, the concentricity of the product is high, core shift is avoided, and the purposes of reducing the cost and improving the performance of the product are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power cable technical field, especially in kind of aluminum band steel pipe optical fiber composite overhead ground wire. BACKGROUND

[0002] Optical fiber composite overhead ground wire is placed in the ground wire of overhead high voltage transmission line to constitute the optical fiber communication network on the transmission line, and the structure form has double functions of electric wire and communication, and is generally called OPGW optical cable. The existing optical fiber composite overhead ground wire is mostly aluminum pipe type optical fiber composite overhead ground wire. The wall thickness of the seamless extrusion type aluminum pipe is large, and the product cannot meet the requirement of the outer diameter of the optical cable in the design. Therefore, the utility model provides a kind of aluminum band steel pipe optical fiber composite overhead ground wire. SUMMARY

[0003] The utility model discloses a kind of aluminum band steel pipe optical fiber composite overhead ground wire, replace extrusion type aluminum pipe in prior art by aluminum pipe made of aluminum band bending roll welding, reduce the outer diameter and mass of product, reduce cost, improve product performance.

[0004] The utility model discloses a kind of aluminum band steel pipe optical fiber composite overhead ground wire, including central stainless steel light unit, optical fiber located in the central stainless steel light unit, aluminum pipe that is covered in the stainless steel light unit, and outer stranding layer that is stranded in the aluminum pipe, the aluminum pipe is made of aluminum band longitudinal bending roll welding.

[0005] Preferably, the outer stranding layer is made of multiple aluminum-clad single filaments and insulated conductors, and the outer stranding layer is stranded by the multiple aluminum-clad single filaments and the insulated conductors.

[0006] Preferably, the insulated conductor includes a conductor and an insulation layer wrapped around the conductor.

[0007] Preferably, the insulated conductor includes a conductor and an insulation layer wrapped around the conductor.

[0008] The utility model discloses a kind of aluminum band steel pipe optical fiber composite overhead ground wire, including central stainless steel light unit, optical fiber located in the central stainless steel light unit, aluminum pipe that is covered in the stainless steel light unit, and outer stranding layer that is stranded in the aluminum pipe, the aluminum pipe is made of aluminum band longitudinal bending roll welding. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the layout of example aluminum band steel pipe optical fiber composite overhead ground wire when working.

[0010] The figures show:

[0011] 1 - optical fiber; 2 - stainless steel optical unit; 3 - aluminum tube; 4 - aluminum-clad monofilament; 5 - insulated conductor. DETAILED DESCRIPTION

[0012] The utility model will be further described in detail below in combination with specific embodiments.

[0013] Embodiment:

[0014] As Figure 1 shown, the utility model relates to an aluminum tape steel tube optical fiber composite overhead ground wire, including center stainless steel optical unit 2, the optical fiber 1 in center stainless steel optical unit 2, the aluminum tube 3 of sleeve in stainless steel optical unit 2 and the outer stranding layer of two aluminum-clad monofilaments 4 and two insulated conductors 5 stranding in aluminum tube 3, wherein two insulated conductors 5 are symmetrically arranged, insulated conductor 5 includes conductor and the insulating layer of cladding in conductor, aluminum tube 3 is made of aluminum tape longitudinal bending and welding, the wall thickness of aluminum tube 3 is 0.55mm, the both sides of aluminum tape are provided as bevel, when welding aluminum tube 3, can constitute V-shaped groove for accommodating solder, prevent the wall thickness of welding place to be too big, insulated conductor 5 can be powered on and heat when icing, for ice melting, and insulated conductor 5 and aluminum-clad monofilament 4 are strung into outer stranding layer, need not insulated conductor 5 through the clamp fixed in overhead ground wire outside, product is more beautiful, and the diameter is smaller.

[0015] The utility model replaces the extrusion type aluminum tube 3 in prior art by the aluminum tube 3 made of aluminum tape bending and welding, can make the wall thickness of aluminum tube 3 smaller, and the thickness is more consistent, thereby reducing the outer diameter and mass of product, also reaches the purpose of reducing cost and improving product performance.

[0016] The above only some embodiments of the utility model. For ordinary skilled person in the art, without departing from the utility model creative concept, can make a number of deformation and improvement, these all belong to the protection scope of the utility model.

Claims

1. An aluminum strip steel tube fiber optic composite overhead ground wire, characterized in that: It includes a central stainless steel optical unit, an optical fiber located inside the central stainless steel optical unit, an aluminum tube sleeved outside the stainless steel optical unit, and an outer stranded wire layer twisted outside the aluminum tube, wherein the aluminum tube is made by longitudinally bending and welding aluminum strip.

2. The aluminum strip steel tube fiber optic composite overhead ground wire according to claim 1, characterized in that: The outer stranded wire layer is composed of multiple aluminum-clad steel monowires and insulated wires, and the outer stranded wire layer is formed by intermittently stranding the multiple aluminum-clad steel monowires and insulated wires.

3. The aluminum strip steel tube fiber optic composite overhead ground wire according to claim 2, characterized in that: The insulated wire includes a conductor and an insulating layer covering the conductor.

4. The aluminum strip steel tube fiber optic composite overhead ground wire according to claim 2, characterized in that: There is at least one insulated wire.

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