Light high-capacity central tube type optical fiber composite overhead ground wire

Abstract

The utility model provides a light-weight high-capacity central tube type optical fiber composite overhead ground wire, which comprises a stainless steel circular tube containing a plurality of optical fibers and hydrogen absorption fiber paste, an arc-shaped aluminum tube tightly coated on the periphery of the stainless steel circular tube, and a plurality of reinforcing pieces tightly coated on the periphery of the arc-shaped aluminum tube, the outline of the arc-shaped aluminum pipe is in a spiral shape composed of a plurality of concave arc-shaped grooves. According to the utility model, the structure is compact, the periphery of the stainless steel round pipe is wrapped by the arc-shaped aluminum pipe, and the spiral concave arc-shaped groove at the outer side of the arc-shaped aluminum pipe is tightly attached to the round reinforcing piece, so that a gap between the arc-shaped aluminum pipe and the reinforcing piece is filled with aluminum or aluminum alloy, the structural space of the OPGW is fully utilized, and the service life of the OPGW is prolonged. The diameter is reduced while the short-circuit current capacity and the tensile strength are increased, the extra weight is reduced due to the fact that organic matter anti-corrosion materials are not filled, the operation load of a line is reduced, the performance is safe and reliable, and the cable is suitable for industrial application and popularization and has high utilization value in the industry.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber cables, in particular to a light-weight and large-capacity central tube type optical fiber composite overhead ground wire. Background Art

[0002] Fiber-optic composite overhead ground wire, also known as OPGW, is a protective ground wire and fiber-optic communication line in high-voltage transmission lines. In a typical central tube OPGW structure, one type has a stainless steel round tube containing optical fiber and fiber jelly in the center. In order to increase the short-circuit current capacity, an improved structure is to wrap a round aluminum tube on the outside. The other type has a plastic tube containing optical fiber and fiber jelly, reinforcements, and a metal tube protected by a high-temperature plastic belt. Then, a layer of reinforcements such as aluminum-clad steel wire and aluminum alloy wire are tightly arranged on the outer periphery of the metal tube, and organic anti-corrosion materials are filled in the gap between the metal tube and the reinforcement to reduce the fine sand, salt spray, and harmful substances in the atmosphere from adhering to and depositing in the gap of OPGW and slowing down the local corrosion of the metal surface.

[0003] In recent years, with the continuous improvement of intelligence, the number of optical fibers in the same OPGW in high-voltage transmission lines has continued to increase, and the internal space occupied by optical fibers and fiber jelly has inevitably increased, which directly leads to an increase in cable diameter and weight, and subsequently increases the operating load of the line. Especially when OPGW requires large short-circuit current capacity and high tensile strength, reducing the cable diameter becomes a difficult problem in OPGW design.

[0004] Therefore, the present application aims to develop a light-weight, large-capacity central tube optical fiber composite overhead ground wire with a reasonable structure, small cable diameter and light weight in order to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the purpose of the present utility model is to provide a lightweight, large-capacity central tube type optical fiber composite overhead ground wire, which is used to solve the problem in the prior art that as the number of optical fibers continues to increase, the internal space occupied by the optical fibers and fiber grease will inevitably increase, thereby increasing the cable diameter and weight, and increasing the operating load of the line.

[0006] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0007] A light-weight, large-capacity central tube type optical fiber composite overhead ground wire comprises a stainless steel round tube containing a plurality of optical fibers and hydrogen absorbing fiber paste, an arc-shaped aluminum tube tightly wrapped around the outer circumference of the stainless steel round tube, and a plurality of reinforcing members tightly wrapped around the outer circumference of the arc-shaped aluminum tube, wherein the contour of the arc-shaped aluminum tube is a spiral composed of a plurality of concave arc-shaped grooves.

[0008] In an embodiment of the present invention, the cross section of the reinforcement member is circular and fits tightly with the concave arc groove.

[0009] In an embodiment of the present invention, a plurality of the reinforcement members are closely arranged to form a concentric circle.

[0010] In an embodiment of the present invention, the reinforcement member is an aluminum clad steel wire.

[0011] In an embodiment of the present invention, the reinforcement member is composed of aluminum-clad steel wire and aluminum alloy wire.

[0012] In an embodiment of the present invention, the material of the arc-shaped aluminum tube is aluminum or aluminum-magnesium-silicon alloy.

[0013] In an embodiment of the present invention, each concave arc-shaped groove is correspondingly provided with a reinforcement piece, and there are eight concave arc-shaped grooves.

[0014] As described above, the utility model is a lightweight, large-capacity central tube type optical fiber composite overhead ground wire, which has the following beneficial effects: the utility model has a compact structure, the outer circumference of the stainless steel round tube is wrapped with an arc-shaped aluminum tube, and the spiral concave arc-shaped groove on the outer circumference of the arc-shaped aluminum tube is tightly fitted with the circular reinforcement member, so that the gap between the arc-shaped aluminum tube and the reinforcement member is filled with aluminum or aluminum alloy, which makes full use of the structural space of OPGW, increases the short-circuit current capacity and tensile strength while reducing the diameter, and reduces the extra weight due to not filling with organic anti-corrosion materials, thereby reducing the operating load of the line.

[0015] In the structure of the utility model, the gap between the arc-shaped aluminum tube and the reinforcement is filled with aluminum material instead of organic anti-corrosion material. The arc-shaped aluminum tube further protects the stainless steel round tube, so that the corrosion resistance, short-circuit current capacity and lightning resistance of the OPGW are stronger. It is particularly suitable for use in areas prone to lightning explosions and coastal areas with severe salt spray corrosion. The long-term use performance of the OPGW is safer and more reliable, suitable for industrial promotion and application, and has a higher industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a cross-sectional schematic diagram of the present invention.

[0017] Figure 2 Shown is a schematic diagram of the structure of a curved aluminum tube.

[0018] Component number description

[0019] 1. Stainless steel round tube; 2. Arc-shaped aluminum tube; 201, concave arc groove; 3. Reinforcement. DETAILED DESCRIPTION

[0020] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0021] See also Figure 1 to Figure 2 The utility model provides a light and large-capacity central tube type optical fiber composite overhead ground wire, comprising a stainless steel round tube 1 containing a plurality of optical fibers and hydrogen absorbing fiber paste, an arc-shaped aluminum tube 2 tightly wrapped around the outer circumference of the stainless steel round tube 1, and a plurality of reinforcing members 3 tightly wrapped around the outer circumference of the arc-shaped aluminum tube 2. The contour of the arc-shaped aluminum tube 2 is a spiral shape composed of a plurality of concave arc-shaped grooves 201.

[0022] The utility model provides a light-weight, large-capacity central tube optical fiber composite overhead ground wire. Through reasonable structural design, the spiral concave arc groove 201 on the outer circumference of the arc-shaped aluminum tube 2 and the circular reinforcement 3 are tightly fitted, which fully utilizes the structural space of the OPGW, enhances the electrical performance of the OPGW, increases the short-circuit current capacity and tensile strength while reducing the diameter, and reduces the extra weight and the operating load of the line because it is not filled with organic anti-corrosion materials. In this case, the OPGW has better corrosion resistance, large short-circuit current capacity and lightning resistance, and is more suitable for use in areas prone to lightning explosions and coastal areas with severe salt spray corrosion. Its long-term use performance is safer and more reliable.

[0023] The cross-section of the reinforcement 3 is circular and fits tightly with the concave arc groove 201; a number of the reinforcements 3 are closely arranged to form a concentric circle; the reinforcement 3 is an aluminum-clad steel wire; the reinforcement 3 is composed of aluminum-clad steel wire and aluminum alloy wire; the material of the arc-shaped aluminum tube 2 is aluminum or aluminum-magnesium-silicon alloy; each concave arc groove 201 is correspondingly provided with a reinforcement 3, and the concave arc grooves 201 are provided with eight.

[0024] The utility model has a compact structure. The outer circumference of the stainless steel round tube 1 is covered with an arc-shaped aluminum tube 2. The spiral concave arc groove 201 on the outer side of the arc-shaped aluminum tube 2 is tightly fitted with the circular reinforcement 3, so that the gap between the arc-shaped aluminum tube 2 and the reinforcement 3 is filled with aluminum or aluminum alloy, and the structural space of the OPGW is fully utilized. The short-circuit current capacity and tensile strength are increased while the diameter is reduced. At the same time, the extra weight is reduced because no organic anti-corrosion material is filled, thereby reducing the operating load of the line.

[0025] In the structure of the utility model, the gap between the arc-shaped aluminum tube 2 and the reinforcement 3 is filled with aluminum material instead of organic anti-corrosion material. The arc-shaped aluminum tube 2 further protects the stainless steel round tube 1, so that the corrosion resistance, short-circuit current capacity and lightning resistance of the OPGW are stronger. It is particularly suitable for use in areas prone to lightning explosions and coastal areas with severe salt spray corrosion. The long-term use performance of the OPGW is safer and more reliable, suitable for industrial promotion and application, and has a higher industrial utilization value.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A light-weight, large-capacity central tube optical fiber composite overhead ground wire, characterized in that: The invention comprises a stainless steel round tube (1) containing a plurality of optical fibers and hydrogen absorbing fiber paste, an arc-shaped aluminum tube (2) tightly wrapped around the outer circumference of the stainless steel round tube (1), and a plurality of reinforcing members (3) tightly wrapped around the outer circumference of the arc-shaped aluminum tube (2); the contour of the arc-shaped aluminum tube (2) is a spiral shape composed of a plurality of concave arc-shaped grooves (201).

2. According to claim 1, a light-weight, large-capacity central tube optical fiber composite overhead ground wire is characterized by: The cross section of the reinforcement member (3) is circular and fits tightly with the concave arc-shaped groove (201).

3. The light-weight, large-capacity central tube optical fiber composite overhead ground wire according to claim 1, characterized in that: A plurality of the reinforcing members (3) are closely arranged to form a concentric circle.

4. The light-weight, large-capacity central tube optical fiber composite overhead ground wire according to claim 1, characterized in that: The reinforcement member (3) is an aluminum-clad steel wire.

5. The light-weight, large-capacity central tube optical fiber composite overhead ground wire according to claim 1, characterized in that: The reinforcement (3) is composed of aluminum-clad steel wire and aluminum alloy wire.

6. The light-weight, large-capacity central tube optical fiber composite overhead ground wire according to claim 1, characterized in that: The material of the arc-shaped aluminum tube (2) is aluminum or an aluminum-magnesium-silicon alloy.

7. The light-weight, large-capacity central tube optical fiber composite overhead ground wire according to claim 1, characterized in that: Each concave arc-shaped groove (201) is correspondingly provided with a reinforcement piece (3), and there are eight concave arc-shaped grooves (201).

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