High-performance lightning protection overhead insulated cable

Abstract

The utility model discloses a high-performance lightning protection overhead insulated cable which comprises a supporting rib, a plurality of conductors are arranged on the periphery of the outer side of the supporting rib in an array mode, the supporting rib and the outer sides of the conductors are all coated with aluminum sheaths, the aluminum sheaths are connected, the outer sides of the aluminum sheaths are coated with insulating layers, the outer sides of the insulating layers are coated with lightning protection layers, and the outer sides of the lightning protection layers are connected with the supporting rib. And the outer side of the lightning protection layer is wrapped with a protection layer, so that the material is simple, the safety is higher, and the lightning protection effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of cable equipment, and specifically relates to a high-performance lightning protection overhead insulated cable. Background Technique

[0002] In modern society, the stable transmission of electricity is crucial for the normal operation of various fields. As an important carrier for power transmission, the performance of overhead insulated cables directly affects the stability and safety of the power system.

[0003] Traditional overhead insulated cables have certain deficiencies in lightning protection. Due to the influence of natural phenomena such as lightning, the cables are prone to being struck by lightning, resulting in power transmission interruption and even serious consequences such as fires.

[0004] In order to meet the growing demand for power transmission and improve the stability and safety of the power system, there is an urgent need for a high-performance lightning protection overhead insulated cable to overcome the problems existing in traditional cables in terms of conductors, insulation, protection, and lightning protection. Content of the Utility Model

[0005] In order to solve the above problems, the utility model provides a high-performance lightning protection overhead insulated cable with simple materials, higher safety, and better lightning protection effect.

[0006] In order to achieve the above purpose, the utility model provides a high-performance lightning protection overhead insulated cable, including a support rib, a plurality of conductors are circumferentially and arrayed outside the support rib, aluminum sheaths are wrapped outside the support rib and the plurality of conductors, the plurality of aluminum sheaths are connected to each other, an insulating layer is wrapped outside the aluminum sheaths, a lightning protection layer is wrapped outside the insulating layer, and a protective layer is wrapped outside the lightning protection layer.

[0007] Preferably, the conductor is a stranded copper conductor, and the cross-sectional area is 70mm 2 .

[0008] Preferably, a non-linear resistance material is filled between the insulating layer and the aluminum sheath, and the non-linear resistance material is any one of zinc oxide, silicon carbide, titanium dioxide, strontium carbonate, and tin dioxide.

[0009] Preferably, the lightning protection layer adopts a copper tape shielding layer, and the thickness is between 0.1 mm and 0.2 mm.

[0010] Preferably, the protective layer adopts polyethylene, and the thickness is between 2 mm and 3 mm.

[0011] The beneficial effects of the present utility model are as follows: The high-performance lightning protection overhead insulated cable is provided with support ribs, which can provide stable support for the conductor, ensure the stability of the cable structure, effectively prevent the displacement or deformation of the conductor during use, and thus guarantee the stability of power transmission.

[0012] The multi-strand stranded copper conductor with a cross-sectional area of 70 mm 2 , has good electrical conductivity, can reduce resistance loss, improve power transmission efficiency, and meet the high-load power transmission requirements. For example, in places with large electricity consumption such as large factories or commercial areas, it can ensure stable power supply.

[0013] The non-linear resistance materials filled between the insulating layer and the aluminum sheath, such as zinc oxide, silicon carbide, etc., can present a high-resistance state under normal voltage for effective insulation; and present a low-resistance state under high voltage to quickly release current, thereby protecting the cable from overvoltage damage and extending the service life of the cable. The lightning protection layer adopts a copper tape shielding layer with a thickness between 0.1 mm and 0.2 mm, which can effectively conduct the current generated by lightning into the ground and reduce the risk of lightning damage to the cable. In areas with frequent lightning strikes, it can significantly reduce power outages caused by lightning strikes and ensure the normal operation of the power system. Brief Description of the Drawings

[0014] Figure 1 It is a cross-sectional structural schematic diagram of the present utility model.

[0015] Description of the Marks in the Figures

[0016] 1. Support rib; 2. Conductor; 3. Aluminum sheath; 4. Non-linear resistance material; 5. Insulating layer; 6. Lightning protection layer; 7. Protective layer. Specific Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Combined with Figure 1 , the present utility model is a high-performance lightning protection overhead insulated cable, including a support rib 1. A plurality of conductors 2 are circumferentially and arrayed outside the support rib 1. The support rib 1 and the plurality of conductors 2 are both covered with an aluminum sheath 3. The plurality of aluminum sheaths 3 are connected to each other. The outside of the aluminum sheath 3 is wrapped with an insulating layer 5. The outside of the insulating layer 5 is wrapped with a lightning protection layer 6. The outside of the lightning protection layer 6 is wrapped with a protective layer 7.

[0019] Further, the conductor 2 is a stranded copper conductor 2 with a cross-sectional area of 70 mm 2 .

[0020] Further, a non-linear resistance material 4 is filled between the insulating layer 5 and the aluminum sheath 3, and the non-linear resistance material 4 is any one of zinc oxide, silicon carbide, titanium dioxide, strontium carbonate, and tin dioxide.

[0021] Further, the lightning protection layer 6 is a copper tape shielding layer with a thickness between 0.1 mm and 0.2 mm.

[0022] Further, the protective layer 7 is made of polyethylene with a thickness between 2 mm and 3 mm.

[0023] This high-performance lightning protection overhead insulated cable is provided with a support rib 1, which can provide stable support for the conductor 2, ensure the stability of the cable structure, effectively prevent the conductor 2 from displacement or deformation during use, and thus guarantee the stability of power transmission.

[0024] Using a stranded copper conductor 2 with a cross-sectional area of 70 mm 2 , it has good electrical conductivity, can reduce resistance loss, improve power transmission efficiency, and meet the high-load power transmission requirements. For example, in places with large power consumption such as large factories or commercial areas, it can ensure stable power supply.

[0025] The non-linear resistance material 4 filled between the insulating layer 5 and the aluminum sheath 3, such as zinc oxide, silicon carbide, etc., can present a high-resistance state under normal voltage for effective insulation; it presents a low-resistance state under high voltage and quickly releases current, thus protecting the cable from overvoltage damage and extending the service life of the cable. The lightning protection layer 6 is a copper tape shielding layer with a thickness between 0.1 mm and 0.2 mm, which can effectively conduct the current generated by lightning into the ground and reduce the risk of lightning damage to the cable. In areas with frequent lightning strikes, it can significantly reduce power outages caused by lightning strikes and ensure the normal operation of the power system.

[0026] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-performance lightning protection overhead insulated cable, characterized in that: It includes support ribs (1), and a plurality of conductors (2) are circumferentially arrayed outside the support ribs (1). An aluminum sheath (3) is wrapped around the outside of the support ribs (1) and the plurality of conductors (2). The plurality of aluminum sheaths (3) are connected to each other. An insulating layer (5) is wrapped around the outside of the aluminum sheath (3). A lightning protection layer (6) is wrapped around the outside of the insulating layer (5). A protective layer (7) is wrapped around the outside of the lightning protection layer (6).

2. The high-performance lightning protection overhead insulated cable according to claim 1, wherein: The conductor (2) is a stranded copper conductor (2) with a cross-sectional area of 70 mm 2 .

3. The high-performance lightning protection overhead insulated cable according to claim 1, wherein: A non-linear resistance material (4) is filled between the insulating layer (5) and the aluminum sheath (3), and the non-linear resistance material (4) is any one of zinc oxide, silicon carbide, titanium dioxide, strontium carbonate, and tin dioxide.

4. A high-performance lightning protection overhead insulated cable according to claim 1, characterized in that: The lightning protection layer (6) uses a copper tape shielding layer with a thickness between 0.1 mm and 0.2 mm.

5. A high-performance lightning protection overhead insulated cable according to claim 1, characterized in that: The protective layer (7) uses polyethylene with a thickness between 2 mm and 3 mm.

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