Anti-lightning-stroke optical fiber composite overhead ground wire

Abstract

The utility model discloses an anti-lightning optical fiber composite overhead ground wire, which relates to the technical field of power cables and comprises a stranded wire core used for supporting and protecting an optical fiber; the protection layer sleeves the outer side of the stranded wire core and is used for protecting the stranded wire core from lightning stroke; the interval buffer layer sleeves the outer side of the protective layer and is used for performing interval and buffer protection on the protective layer and isolating lightning stroke; the aluminum-clad steel stranded wire layer is arranged on the outer side of the interval buffer layer and used for protecting the interval buffer layer from lightning stroke. According to the utility model, the optical fiber is protected by designing a multi-layer structure and various materials together, so that the overhead ground wire has good lightning stroke resistance, the problems that the aluminum metal of the overhead ground wire is easy to corrode and is easy to damage by lightning stroke are effectively solved, the overhead ground wire is compact in structural design and small in occupied space, and the lightning stroke resistance materials are adopted, so that the cost is reduced. The overhead ground wire can effectively resist lightning stroke and arc discharge, so that accidents that the optical fiber is broken by lightning stroke are reduced, the service life of the overhead ground wire is prolonged, and unnecessary economic loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to an optical fiber composite overhead ground wire resistant to lightning strikes. Background Art

[0002] Fiber-optic composite overhead ground wire is a device that protects overhead power transmission lines from lightning strikes, also known as lightning wire. In the power system, overhead ground wire plays an important role in reducing accidents and power outages caused by heavy rain, lightning strikes, etc., and improving the safety of the line. Overhead ground wires are usually installed above overhead transmission lines and connected to the ground through a grounding system. When lightning activity occurs nearby, lightning tends to strike the overhead ground wire first, directing the lightning current to the ground to protect the wire from transmitting electricity normally.

[0003] However, since the circuit spans a wide area, it is prone to multiple lightning strikes during the thunderstorm season. The optical fiber composite overhead ground wire is usually composed of multiple layers, among which the outer metal layer is made of aluminum alloy wire. The aluminum alloy wire is prone to melting when subjected to multiple lightning strikes, resulting in transmission damage. Therefore, its lightning resistance performance is relatively poor and cannot meet existing needs. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a lightning-resistant optical fiber composite overhead ground wire, comprising:

[0005] A stranded core, used to support and protect the optical fiber;

[0006] A protective layer is sleeved on the outside of the twisted wire core, and the protective layer is used to protect the twisted wire core from lightning strikes;

[0007] A spacing buffer layer is sleeved outside the protective layer, and the spacing buffer layer is used to provide spacing and buffer protection for the protective layer and isolate lightning strikes;

[0008] The aluminum-clad steel stranded wire layer is arranged outside the spacing buffer layer, and the aluminum-clad steel stranded wire layer is used to protect the spacing buffer layer from lightning strikes.

[0009] Furthermore, the stranded wire core comprises:

[0010] Optical unit, used to place and protect optical fibers;

[0011] A polyethylene fiber reinforcement core is twisted with the optical unit to form a strand, and the polyethylene fiber reinforcement core is used to support the optical unit.

[0012] Further, the optical unit comprises:

[0013] optical fiber;

[0014] A stainless steel tube, sleeved on the outside of the optical fiber;

[0015] The waterproof fiber paste is filled between the optical fiber and the stainless steel tube.

[0016] Furthermore, the stranded wire core is formed by twisting four optical units and five polyethylene fiber reinforcement cores, wherein one polyethylene fiber reinforcement core is arranged at the center of the four optical units, and the other four polyethylene fiber reinforcement cores are respectively twisted and clamped at the outer intervals of the four optical units.

[0017] Furthermore, the protective layer includes:

[0018] A halogen-free sleeve, sleeved on the outer side of the stranded wire core;

[0019] An aluminum sleeve is sleeved on the outside of the halogen-free sleeve, and the aluminum sleeve is used to resist lightning strikes.

[0020] Furthermore, the spacer buffer layer includes:

[0021] Aluminum wires, a plurality of which are provided, and the aluminum wires are used to enhance the tensile strength of the spacer buffer layer;

[0022] The coating layer is coated on the outside of each aluminum wire, and is used to separate the protective layer and the aluminum-clad steel stranded wire layer, and to provide buffering and support between the protective layer and the aluminum-clad steel stranded wire layer.

[0023] Furthermore, the coating layer is composed of a plurality of spacer buffer blocks, and the spacer buffer blocks are made of polyurethane material.

[0024] Furthermore, a clamping structure is provided at the bottom of each of the spacer buffer blocks, and the clamping structure is used for installing and removing the spacer buffer blocks;

[0025] Furthermore, a groove structure is provided on the top of the spacing buffer block, and the groove structure is used for clamping with the aluminum-clad steel stranded wire layer.

[0026] Furthermore, the aluminum-clad steel stranded wire layer is composed of a plurality of aluminum-clad steel wires, and the aluminum-clad steel wires are clamped on the coating layer.

[0027] Compared with the prior art, the utility model of a lightning-resistant optical fiber composite overhead ground wire has the following beneficial effects:

[0028] The utility model protects the optical fiber by designing a multi-layer structure and multiple materials, so that the overhead ground wire has good lightning resistance, and effectively solves the problem that the aluminum metal of the overhead ground wire is easily corroded and easily damaged by lightning. Its structural design is compact and occupies a small space. The lightning-resistant materials used can effectively resist lightning strikes and arc discharges, which reduces the accidents of optical fiber being broken by lightning strikes, prolongs the service life of the overhead ground wire, and also reduces unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the optical fiber composite overhead ground wire that resists lightning strikes in an embodiment of the utility model;

[0030] Figure 2 It is a schematic structural diagram of the coating layer of the lightning-resistant optical fiber composite overhead ground wire in an embodiment of the utility model.

[0031] In the figure, 1. optical unit; 2. polyethylene fiber reinforcement core; 3. optical fiber; 4. stainless steel tube; 5. waterproof fiber paste; 6. halogen-free casing; 7. aluminum casing; 8. aluminum wire; 9. spacer buffer block; 10. aluminum clad steel wire. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "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 application 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 application.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0035] In the description of this application, 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 this application can be understood according to specific circumstances.

[0036] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, comprising: a stranded wire core for supporting and protecting the optical fiber; a protective layer sleeved on the outside of the stranded wire core, the protective layer being used to protect the stranded wire core from lightning strikes; a spacing buffer layer sleeved on the outside of the protective layer, the spacing buffer layer being used to space and buffer the protective layer and to isolate lightning strikes; an aluminum-clad steel stranded wire layer being arranged on the outside of the spacing buffer layer, the aluminum-clad steel stranded wire layer being used to protect the spacing buffer layer from lightning strikes.

[0037] Furthermore, by designing a multi-layer structure and multiple materials to jointly protect the optical fiber 3, the overhead ground wire has good lightning resistance, effectively solving the problem that the aluminum metal of the overhead ground wire is easily corroded and easily damaged by lightning. Its structural design is compact and occupies a small space. The lightning-resistant materials used can effectively resist lightning strikes and arc discharges, reducing the accidents of optical fiber being broken by lightning strikes, extending the service life of the overhead ground wire, and also reducing unnecessary economic losses.

[0038] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the stranded wire core comprises: an optical unit 1 for placing and protecting an optical fiber 3; a polyethylene fiber reinforcement core 2 twisted with the optical unit 1 into strands, wherein the polyethylene fiber reinforcement core 2 is used to support the optical unit 1.

[0039] Furthermore, the twisted structure of the polyethylene fiber reinforcement core 2 and the optical unit 1 can provide mechanical support and protection for the optical unit 1, increase the strength and stability of the optical cable, and ensure the reliability and durability of the optical fiber 3 in various application scenarios.

[0040] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the optical unit 1 comprises: an optical fiber 3; a stainless steel tube 4, which is sleeved on the outside of the optical fiber 3; and a waterproof fiber paste 5, which is filled between the optical fiber 3 and the stainless steel tube 4, wherein the waterproof fiber paste 5 is used to prevent the optical fiber 3 from coming into contact with water.

[0041] Furthermore, the waterproof fiber paste 5 is a material used to protect the connectors and connection points of the optical fiber 3. It is usually a gel-like or paste-like substance with waterproof, sealing and insulating properties. The waterproof fiber paste 5 can form a reliable protective layer on the connectors and connection points of the optical fiber 3 to prevent the intrusion of water, moisture and other external environments, thereby maintaining the performance and stability of the optical fiber 3.

[0042] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the stranded wire core is formed by twisting four optical units 1 and five polyethylene fiber reinforcement cores 2, wherein one polyethylene fiber reinforcement core 2 is arranged at the center of the four optical units 1, and the other four polyethylene fiber reinforcement cores 2 are twisted and clamped at the outer intervals of the four optical units 1 respectively.

[0043] Furthermore, since the polyethylene fiber reinforced core 2 has high strength and rigidity, the polyethylene fiber reinforced core 2 can provide mechanical support to the light unit 1, increase the strength and stability of the light unit 1, enable the light unit 1 to resist external tension and pressure, protect the light unit 1 from damage, and the polyethylene fiber can also increase the tensile strength of the light unit 1.

[0044] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the protective layer comprises: a halogen-free sleeve 6, which is sleeved on the outside of the stranded wire core; and an aluminum sleeve 7, which is sleeved on the outside of the halogen-free sleeve 6, wherein the aluminum sleeve 7 is used to resist lightning strikes.

[0045] Furthermore, the halogen-free sleeve 6 is a sleeve made of a halogen-free material, which is sleeved on the outside of the twisted wire core. Since the halogen-free sleeve 6 has flame retardant properties and low smoke and non-toxic characteristics, it can reduce the impact of fire and smoke on the optical fiber and improve safety; the aluminum sleeve 7 is a sleeve made of aluminum material, which is sleeved on the outside of the halogen-free sleeve 6. Since aluminum has good electrical conductivity, it can absorb and disperse the current generated by lightning impulses, which can protect the optical fiber 3 from lightning damage. The main function of the aluminum sleeve 7 is to resist lightning strikes and provide additional protection for the optical cable.

[0046] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the spacing buffer layer comprises: a plurality of aluminum wires 8, wherein the aluminum wires 8 are used to enhance the tensile strength of the spacing buffer layer; and a coating layer, which is coated on the outside of each of the aluminum wires 8, wherein the coating layer is used to space the protective layer and the aluminum-clad steel stranded wire layer, and to provide buffering and support between the protective layer and the aluminum-clad steel stranded wire layer.

[0047] Furthermore, the aluminum wire 8 is arranged inside the coating layer, and the aluminum wire 8 is used to enhance the tensile strength of the entire spacing buffer layer, while the coating layer is used to space the protective layer and the aluminum-clad steel stranded wire layer, and to provide buffering and support at the same time.

[0048] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the coating layer is composed of a plurality of spacer buffer blocks 9, and the spacer buffer blocks 9 are made of polyurethane material.

[0049] Furthermore, polyurethane is a material with elasticity and wear resistance, and has good lightning resistance and buffering performance. Using it to make the spacing buffer block 9 can effectively increase the lightning resistance of the overhead ground wire and play a certain buffering and protective function.

[0050] like Figure 2 As shown, in an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, and a clamping structure is provided at the bottom of each of the spacer buffer blocks 9, and the clamping structure is used for the installation and disassembly of the spacer buffer block 9; a groove structure is provided at the top of the spacer buffer block 9, and the groove structure is used to clamp with the aluminum-clad steel stranded wire layer.

[0051] Specifically, the top of the spacer buffer block 9 is a concave groove structure, and the top grooves of the two spacer buffer blocks 9 can be combined to clamp the outer aluminum clad steel wire 10. By twisting the aluminum clad steel wire 10, it is possible to lock the entire coating layer, so that the spacer buffer layer is sleeved on the outside of the protective layer, which increases the stability of the entire coating layer and blocks lightning strikes. A clamping structure is provided at the bottom of the spacer buffer block 9, and the clamping structure is arc-shaped, which can facilitate the installation and disassembly of the spacer buffer block 9.

[0052] In an embodiment of the present application, a lightning-resistant optical fiber composite overhead ground wire is provided, wherein the aluminum-clad steel stranded wire layer is composed of a plurality of aluminum-clad steel wires 10, and the aluminum-clad steel wires 10 are clamped on the coating layer.

[0053] Furthermore, the aluminum-clad steel wire 10 is a material composed of aluminum and steel wire wrapped on the outside. It is composed of high-strength steel wire as the core and a layer of aluminum material wrapped on the outside. The aluminum-clad steel wire 10 combines the lightness and good conductivity of aluminum with the high strength and corrosion resistance of steel. While ensuring the low modulus of Yang, the overall tensile strength and elongation are improved. In this way, when a lightning strike occurs, there is less broken strand phenomenon, thereby ensuring the safety of the overhead ground wire.

[0054] In summary, the embodiment of the utility model provides a lightning-resistant optical fiber composite overhead ground wire, including: a stranded wire core, used to support and protect the optical fiber 3; a protective layer, sleeved on the outside of the stranded wire core, the protective layer is used to protect the stranded wire core from lightning strikes; a spacing buffer layer, sleeved on the outside of the protective layer, the spacing buffer layer is used to perform spacing and buffering protection on the protective layer and isolate lightning strikes; an aluminum-clad steel stranded wire layer, arranged on the outside of the spacing buffer layer, the aluminum-clad steel stranded wire layer is used to protect the spacing buffer layer from lightning strikes. The utility model protects the optical fiber 3 by designing a multi-layer structure and multiple materials together, so that the overhead ground wire has good lightning resistance, effectively solves the problem that the aluminum metal of the overhead ground wire is easily corroded and easily damaged by lightning strikes, has a compact structural design, occupies a small space, and the lightning-resistant material used can effectively resist lightning strikes and arc discharges, reduce the accidents of optical fiber 3 being broken by lightning strikes, extend the service life of the overhead ground wire, and also reduce unnecessary economic losses.

[0055] Finally, it should be noted that: Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0056] The above is only an example of the implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and subject to restrictions. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0057] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0058] So far, the technical solution of the utility model has been described in conjunction with the further embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A lightning-resistant optical fiber composite overhead ground wire, characterized in that: include: A stranded core, used to support and protect the optical fiber; A protective layer is sleeved on the outside of the twisted wire core, and the protective layer is used to protect the twisted wire core from lightning strikes; A spacing buffer layer is sleeved outside the protective layer, and the spacing buffer layer is used to provide spacing and buffer protection for the protective layer and isolate lightning strikes; The aluminum-clad steel stranded wire layer is arranged outside the spacing buffer layer, and the aluminum-clad steel stranded wire layer is used to protect the spacing buffer layer from lightning strikes.

2. The lightning-resistant optical fiber composite overhead ground wire according to claim 1, characterized in that: The stranded wire core comprises: Optical unit, used to place and protect optical fibers; A polyethylene fiber reinforcement core is twisted with the optical unit to form a strand, and the polyethylene fiber reinforcement core is used to support the optical unit.

3. The lightning-resistant optical fiber composite overhead ground wire according to claim 2, characterized in that: The light unit comprises: optical fiber; A stainless steel tube, sleeved on the outside of the optical fiber; The waterproof fiber paste is filled between the optical fiber and the stainless steel tube.

4. The lightning-resistant optical fiber composite overhead ground wire according to claim 2, characterized in that: The stranded wire core is twisted into strands by four optical units and five polyethylene fiber reinforcement cores, wherein one polyethylene fiber reinforcement core is arranged at the center of the four optical units, and the other four polyethylene fiber reinforcement cores are respectively clamped at the outer intervals of the four optical units.

5. The lightning-resistant optical fiber composite overhead ground wire according to claim 1, characterized in that: The protective layer comprises: A halogen-free sleeve, sleeved on the outer side of the stranded wire core; An aluminum sleeve is sleeved on the outside of the halogen-free sleeve, and the aluminum sleeve is used to resist lightning strikes.

6. The lightning-resistant optical fiber composite overhead ground wire according to claim 1, characterized in that: The spacer buffer layer comprises: Aluminum wires, a plurality of which are provided, and the aluminum wires are used to enhance the tensile strength of the spacer buffer layer; The coating layer is coated on the outside of each aluminum wire, and is used to separate the protective layer and the aluminum-clad steel stranded wire layer, and to provide buffering and support between the protective layer and the aluminum-clad steel stranded wire layer.

7. The lightning-resistant optical fiber composite overhead ground wire according to claim 6, characterized in that: The coating layer is composed of a plurality of spacer buffer blocks, and the spacer buffer blocks are made of polyurethane material.

8. The lightning-resistant optical fiber composite overhead ground wire according to claim 7, characterized in that: A clamping structure is provided at the bottom of each of the spacing buffer blocks, and the clamping structure is used for installing and removing the spacing buffer blocks.

9. The lightning-resistant optical fiber composite overhead ground wire according to claim 8, characterized in that: A groove structure is provided on the top of the spacing buffer block, and the groove structure is used for clamping with the aluminum-clad steel stranded wire layer.

10. The lightning-resistant optical fiber composite overhead ground wire according to claim 6, characterized in that: The aluminum-clad steel stranded wire layer is composed of a plurality of aluminum-clad steel wires, and the aluminum-clad steel wires are clamped on the cladding layer.

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