Lightning-proof overhead insulated wire

Abstract

The utility model discloses a lightning-proof overhead insulated wire comprising a wire body, two ends of the wire body are sleeved with rubber sleeves, the surfaces of the rubber sleeves are fixedly connected with ceramic insulating sleeves, the outer surfaces of the ceramic insulating sleeves are fixedly connected with fixing sleeves, and a support frame is fixedly connected between the bottoms of the two fixing sleeves. According to the utility model, through the arrangement of the support frame, the fixing sleeve, the ceramic insulation sleeve, the grounding wire and the rubber sleeve, the probability that current is conducted to the wire body when the support frame is hit by lightning is effectively reduced under the action of the ceramic insulation sleeve and the grounding wire while the wire body is erected; meanwhile, current brought by lightning stroke can be rapidly conducted to the ground, the lightning protection effect of the wire body is guaranteed, and due to the arrangement of the protection layer, the polyvinyl chloride layer, the mineral insulation layer and the mica tape wrapping layer in the protection layer all have good insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of overhead insulated conductor technology, specifically an overhead insulated conductor protected against lightning strikes. Background Technology

[0002] Overhead lines, as opposed to cables, are lines that transmit electrical energy by erecting conductors at a certain height using poles or towers. However, due to the complex power distribution environment in urban areas, short circuits and lightning strikes often occur, leading to a decrease in power supply reliability. Therefore, overhead lines below 10kV generally use insulated conductors, which are known as insulated overhead lines.

[0003] However, the current overhead insulated conductors have poor lightning protection. They are susceptible to lightning strikes during thunderstorms, which can damage the outer sheath of the conductors, increasing the chance of leakage and adversely affecting the normal transmission of electricity. Utility Model Content

[0004] The purpose of this utility model is to provide an overhead insulated conductor that is protected against lightning strikes. It has the advantages of good insulation protection and effectively avoids damage caused by lightning strikes. It solves the problem that the current overhead insulated conductors have poor lightning protection and are easily damaged by lightning strikes during thunderstorms, which increases the probability of leakage and adversely affects the normal transmission of electricity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an overhead insulated conductor for lightning protection, comprising a conductor body, with rubber sleeves fitted at both ends of the conductor body, a ceramic insulating sleeve fixedly connected to the surface of the rubber sleeve, a fixing sleeve fixedly connected to the outer surface of the ceramic insulating sleeve, a support frame fixedly connected between the bottoms of the two fixing sleeves, and a grounding wire fixedly connected to the bottom of the support frame. The conductor body includes a conductor core and a protective layer, the protective layer including a mica tape wrapping layer, a mineral insulating layer wrapped around the outer surface of the mica tape wrapping layer, and a polyvinyl chloride layer wrapped around the outer surface of the mineral insulating layer.

[0006] As a preferred embodiment, a steel strip wrapping layer is fixedly connected to the surface of the polyvinyl chloride layer, and a nylon mesh layer is fixedly connected to the surface of the polyvinyl chloride layer and outside the steel strip wrapping layer.

[0007] As a preferred embodiment, a rain shield is fixedly connected between the tops of the two fixed sleeves, a column is fixedly connected to the middle of the bottom of the support frame, and a support sleeve is fixedly connected between the lower end of the column and the lower end of the grounding wire.

[0008] As a preferred embodiment, an insulating rubber protective sleeve is fitted over the middle end of the conductor body, and clamps are fixedly installed at both ends of the insulating rubber protective sleeve.

[0009] As a preferred embodiment, the surface of the wire core is wrapped with a polyethylene layer, the outer surface of the polyethylene layer is wrapped with a fire-resistant fiber cotton layer, and an aluminum silicate ceramic fiber layer is wrapped between the outer surface of the fire-resistant fiber cotton layer and the inner surface of the protective layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model, through the setting of a support frame, fixing sleeve, ceramic insulating sleeve, grounding wire, and rubber sleeve, can support the conductor body while effectively reducing the probability of current being conducted to the conductor body when the support frame is struck by lightning, thanks to the ceramic insulating sleeve and grounding wire. At the same time, it can quickly conduct the current brought by the lightning strike to the ground, ensuring the lightning protection effect of the conductor body. Furthermore, through the setting of the protective layer, since the polyvinyl chloride layer, mineral insulating layer, and mica tape wrapping layer in the protective layer all have good insulation properties, a multi-layer insulation protection effect is formed on the surface of the conductor body, which effectively avoids damage to the conductor core caused by lightning strikes in the external environment, thereby effectively improving the service life of the conductor body.

[0012] 2. This utility model, through the setting of a steel strip wrapping layer and a nylon mesh layer, forms a double-layer strength protection inside the PVC layer, effectively reducing the probability of PVC layer damage and improving the strength of the conductor body. The rain shield provides protection for the joints of the conductor body, the upright provides support for the support frame, the insulating rubber protective sleeve and clamps provide insulation protection around the joints of the conductor body, the polyethylene layer provides insulation protection around the core, and the fire-resistant fiber cotton layer and the aluminosilicate ceramic fiber layer, both of which have good fire resistance, form good fire protection around the core and the polyethylene layer, improving the fire safety of the conductor body. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the fixing sleeve of this utility model;

[0015] Figure 3 This is a schematic diagram of the conductor body structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the protective layer structure of this utility model.

[0017] In the diagram: 1. Conductor body; 101. Protective layer; 1011. Polyvinyl chloride layer; 1012. Nylon mesh layer; 1013. Steel tape wrapping layer; 1014. Mineral insulation layer; 1015. Mica tape wrapping layer; 102. Alumina silicate ceramic fiber layer; 103. Fire-resistant fiber cotton layer; 104. Polyethylene layer; 105. Wire core; 2. Fixing sleeve; 3. Rain shield; 4. Insulating rubber protective sleeve; 5. Clamp; 6. Support frame; 7. Grounding wire; 8. Post; 9. Support sleeve; 10. Ceramic insulating sleeve; 11. Rubber sleeve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 An overhead insulated conductor for lightning protection includes a conductor body 1. Both ends of the conductor body 1 are fitted with rubber sleeves 11. Ceramic insulating sleeves 10 are fixedly connected to the surface of the rubber sleeves 11. Fixing sleeves 2 are fixedly connected to the outer surface of the ceramic insulating sleeves 10. A support frame 6 is fixedly connected between the bottoms of the two fixing sleeves 2. A grounding wire 7 is fixedly connected to the bottom of the support frame 6. The conductor body 1 includes a conductor core 105 and a protective layer 101. The protective layer 101 includes a mica tape wrapping layer 1015. The outer surface of the mica tape wrapping layer 1015 is wrapped with a mineral insulation layer 1014. The outer surface of the mineral insulation layer 1014 is wrapped with a polyvinyl chloride layer 1011.

[0020] Through the above technical solution, by setting up the support frame 6, fixing sleeve 2, ceramic insulating sleeve 10, grounding wire 7 and rubber sleeve 11, the conductor body 1 can be erected. Under the action of the ceramic insulating sleeve 10 and grounding wire 7, the probability of current being conducted to the conductor body 1 when the support frame 6 is struck by lightning is effectively reduced. At the same time, the current brought by the lightning strike can be quickly conducted to the ground, ensuring the lightning protection effect of the conductor body 1. Furthermore, through the setting of the protective layer 101, since the polyvinyl chloride layer 1011, mineral insulating layer 1014 and mica tape wrapping layer 1015 in the protective layer 101 all have good insulation performance, a multi-layer insulation protection effect is formed on the surface of the conductor body 1, which effectively avoids damage to the conductor core 105 caused by lightning strikes in the external environment, thereby effectively improving the service life of the conductor body 1.

[0021] A steel strip wrapping layer 1013 is fixedly connected to the surface of the polyvinyl chloride layer 1011, and a nylon mesh layer 1012 is fixedly connected to the surface of the polyvinyl chloride layer 1011 and outside the steel strip wrapping layer 1013.

[0022] Through the above technical solution, by setting the steel strip wrapping layer 1013 and the nylon mesh layer 1012, a double-layer strength protection is formed inside the polyvinyl chloride layer 1011, which effectively reduces the probability of the polyvinyl chloride layer 1011 being damaged, while improving the strength of the conductor body 1.

[0023] A rain shield 3 is fixedly connected between the tops of the two fixed sleeves 2, a column 8 is fixedly connected to the middle of the bottom of the support frame 6, and a support sleeve 9 is fixedly connected between the lower end of the column 8 and the lower end of the grounding wire 7.

[0024] Through the above technical solutions, the rain shield 3 is used to protect the joint of the conductor body 1, and the column 8 is used to support the support frame 6.

[0025] An insulating rubber protective sleeve 4 is fitted over the middle end of the conductor body 1, and clamps 5 are fixedly installed at both ends of the insulating rubber protective sleeve 4.

[0026] Through the above technical solution, by setting the insulating rubber protective sleeve 4 and the clamp 5, the purpose of insulating and protecting the area around the connector of the conductor body 1 is achieved.

[0027] The surface of the wire core 105 is wrapped with a polyethylene layer 104, the outer surface of the polyethylene layer 104 is wrapped with a fire-resistant fiber cotton layer 103, and an aluminum silicate ceramic fiber layer 102 is wrapped between the outer surface of the fire-resistant fiber cotton layer 103 and the inner surface of the protective layer 101.

[0028] Through the above technical solution, the polyethylene layer 104 achieves the purpose of insulating and protecting the area around the conductor core 105. The fire-resistant fiber cotton layer 103 and the aluminum silicate ceramic fiber layer 102, both of which have good fire resistance, form good fire protection around the conductor core 105 and the polyethylene layer 104, thus improving the fire safety of the conductor body 1.

[0029] The working principle of this utility model is as follows: By setting up the support frame 6, fixing sleeve 2, ceramic insulating sleeve 10, grounding wire 7 and rubber sleeve 11, the conductor body 1 can be erected at the same time. Under the action of the ceramic insulating sleeve 10 and grounding wire 7, the probability of current being conducted to the conductor body 1 when the support frame 6 is struck by lightning is effectively reduced. At the same time, the current brought by the lightning strike can be quickly conducted to the ground, ensuring the lightning protection effect of the conductor body 1. Furthermore, through the setting of the protective layer 101, since the polyvinyl chloride layer 1011, mineral insulating layer 1014 and mica tape wrapping layer 1015 in the protective layer 101 all have good insulation performance, a multi-layer insulation protection effect is formed on the surface of the conductor body 1, which effectively avoids damage to the conductor core 105 caused by lightning strikes in the external environment, thereby effectively improving the service life of the conductor body 1.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A lightning-proof overhead insulated conductor, comprising a conductor body (1), characterized in that: Both ends of the conductor body (1) are fitted with rubber sleeves (11). A ceramic insulating sleeve (10) is fixedly connected to the surface of the rubber sleeve (11). A fixing sleeve (2) is fixedly connected to the outer surface of the ceramic insulating sleeve (10). A support frame (6) is fixedly connected between the bottoms of the two fixing sleeves (2). A grounding wire (7) is fixedly connected to the bottom of the support frame (6). The conductor body (1) includes a conductor core (105) and a protective layer (101). The protective layer (101) includes a mica tape wrapping layer (1015). The outer surface of the mica tape wrapping layer (1015) is wrapped with a mineral insulating layer (1014). The outer surface of the mineral insulating layer (1014) is wrapped with a polyvinyl chloride layer (1011).

2. The overhead insulated conductor for lightning protection according to claim 1, characterized in that: A steel strip wrapping layer (1013) is fixedly connected to the surface of the polyvinyl chloride layer (1011), and a nylon mesh layer (1012) is fixedly connected to the surface of the polyvinyl chloride layer (1011) and outside the steel strip wrapping layer (1013).

3. The overhead insulated conductor for lightning protection according to claim 1, characterized in that: A rain shield (3) is fixedly connected between the tops of the two fixed sleeves (2), a column (8) is fixedly connected to the middle of the bottom of the support frame (6), and a support sleeve (9) is fixedly connected between the lower end of the column (8) and the lower end of the grounding wire (7).

4. The overhead insulated conductor for lightning protection according to claim 1, characterized in that: An insulating rubber protective sleeve (4) is fitted at the middle end of the conductor body (1), and clamps (5) are fixedly installed at both ends of the insulating rubber protective sleeve (4).

5. The overhead insulated conductor for lightning protection according to claim 1, characterized in that: The surface of the core (105) is wrapped with a polyethylene layer (104), the outer surface of the polyethylene layer (104) is wrapped with a fire-resistant fiber cotton layer (103), and an aluminum silicate ceramic fiber layer (102) is wrapped between the outer surface of the fire-resistant fiber cotton layer (103) and the inner surface of the protective layer (101).

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