Environment-friendly tension-resistant wear-resistant overhead insulated cable

Abstract

The invention discloses an environment-friendly tension-resistant wear-resistant overhead insulated cable which is characterized in that longitudinal edges are arranged on the outer surface of a cable core, a first coating layer is fixedly connected to the periphery of the cable core, a second coating layer is fixedly connected to the periphery of the first coating layer, transverse edges are arranged on the outer surface of the second coating layer, and a lining layer is fixedly connected to the outer surface of the second coating layer. The outer surface of the inner lining layer is fixedly connected with a steel belt armor, the outer surface of the steel belt armor is fixedly connected with a radial moisture blocking layer, the outer surfaces of the four-core wires are all wrapped with insulating filling layers, armored steel meshes are arranged in the insulating filling layers, galvanized steel wires are arranged in the insulating filling layers, and an insulating sheath is arranged on the periphery of the insulating filling layers. And the cross section of the insulating sheath is rhombic. By means of the structure, birds are effectively prevented from staying, meanwhile, due to the fact that the surface of the structure has a slope, rainwater can quickly slide down, freezing in winter is effectively avoided, the two ends of the cable are fixed through the four galvanized steel wires, and the cable is kept in the posture and prevented from being twisted after being erected.

Description

Technical Field

[0001] The present invention relates to the technical field of insulated cables, in particular to an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. Background Art

[0002] In the field of power transmission, the performance of overhead insulated cables is crucial to the stability and reliability of power supply. With the development of society and advancements in technology, traditional overhead insulated cables have exposed numerous problems in practical use, urgently requiring improvement. Traditional cables have simple internal conductor connections. When subjected to external forces, vibration, or bending, the conductors can easily shift, become loose, or even break and deform. For example, in strong winds or under the influence of construction activities, the internal structure of the cable can be damaged, resulting in reduced conductivity. In severe cases, this can cause short circuits, disrupting normal power transmission, causing inconvenience and economic losses to people and their daily lives.

[0003] When cables need to be laid over long distances, their own weight and additional loads such as wind, ice and snow will exert a large tensile force on the cables. Due to insufficient internal reinforcement materials or unreasonable structural design, traditional cables have difficulty meeting the tensile strength requirements and are prone to tensile deformation or even breakage, which seriously threatens the safety of power transmission. It is difficult to avoid birds staying and defecating on overhead cables during use. Bird droppings are conductive and may cause short circuits in the lines; the activities of birds may also peck through the outer sheath of the cable and damage the insulation layer. This not only increases the cost of line maintenance, but may also cause power outages and affect power supply reliability. Therefore, in response to the above-mentioned deficiencies, this proposal proposes an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. The insulated cable adopts a prismatic insulating sheath structure. The purpose is to effectively prevent flying birds from staying when used overhead. At the same time, since the surface of this structure has a slope, rainwater can slide down quickly, effectively avoiding freezing in winter. The four galvanized steel wires inside it effectively improve the overall tensile strength of the cable. At the same time, the two ends of the cable are fixed by the four galvanized steel wires to fix the cable, so that it maintains its posture after installation to avoid twisting.

[0005] By connecting the two layers of the internal four-core conductor and the cable core parts at the joints with positioning ridges, positioning grooves, side grooves and side ridges, the entire conductor structure is more stable, effectively preventing the cable from being deformed by external forces. The horizontal ridges set on the outer surface of the second coating layer are used to better connect with the terminal when making the wire end, prevent it from falling off and improve its stability.

[0006] The present invention also provides the above-mentioned environmentally friendly, tensile-resistant and wear-resistant overhead insulated cable, including four-core conductors, each of which contains a cable core, the outer surface of the cable core is provided with a longitudinal ridge, the outer periphery of the cable core is fixedly connected with a coating layer 1, the outer periphery of the coating layer 1 is fixedly connected with a coating layer 2, the outer surface of the coating layer 2 is provided with a transverse ridge, the outer surface of the coating layer 2 is fixedly connected with an inner lining layer, the outer surface of the inner lining layer is fixedly connected with a steel belt armor, the outer surface of the steel belt armor is fixedly connected with a radial moisture-proof layer, the outer surfaces of the four-core conductors are all covered with an insulating filling layer, the interior of the insulating filling layer is provided with an armored steel mesh, the interior of the insulating filling layer is provided with galvanized steel wire, the outer periphery of the insulating filling layer is provided with an insulating sheath, and the cross-sectional shape of the insulating sheath is a diamond.

[0007] The present invention provides an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. The insulating filling layer is made of polyethylene, and the outer surface of the insulating sheath is made of cross-linked polyethylene wear-resistant material. Leveraging its non-toxic and recyclable properties, the cable improves environmental protection and durability during use.

[0008] According to an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, the four-core conductors are arranged in a 1-2-1 form from top to bottom, and four galvanized steel wires are provided and equidistantly distributed from top to bottom.

[0009] According to the environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, the armored steel mesh is distributed at the junction of the inner side of the diamond-shaped insulating sheath and the insulating filling layer.

[0010] According to an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, the coating layer is composed of twelve copper conductors, the cross-section of a single copper conductor is fan-shaped, a positioning groove is provided on the inner side of a single copper conductor, the positioning groove and the longitudinal ridge are mutually engaged, and a positioning ridge is provided on the outer side of a single copper conductor.

[0011] According to an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, the second coating layer is composed of twelve copper conductors, the cross-section of each copper conductor is fan-shaped, a side groove is provided on the left side of each copper conductor, and a side edge is provided on the right side of each copper conductor, and the twelve copper conductors are mutually clamped with each other through the side grooves and the side edges.

[0012] According to the environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, a single copper conductor has joint grooves on the left and right sides of the bottom edge, and the twelve copper conductors are joined to each other through the joint grooves and then fit together with the positioning edges.

[0013] According to the environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable provided by the present invention, the radial moisture barrier layer and the insulating filling layer are bonded to each other, and the inner lining layer wraps the transverse ribs inside.

[0014] Compared with the prior art, the present invention provides an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. The insulated cable adopts a prismatic insulating sheath structure. The purpose is to effectively prevent flying birds from staying there when the cable is used overhead. At the same time, since the surface of the structure has a slope, rainwater can slide down quickly, effectively preventing freezing in winter. The four galvanized steel wires inside the cable effectively improve the overall tensile strength of the cable. At both ends of the cable, the cable is fixed by the four galvanized steel wires, so that the cable maintains its posture after installation to avoid twisting.

[0015] Compared with the prior art, the environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable of the present invention connects the two layers of the internal four-core conductors and the cable core parts at the places where they are joined with positioning ridges, positioning grooves, side grooves, and side ridges, so that the entire conductor structure formed is more stable, effectively preventing the cable from being deformed by external forces. The purpose of the horizontal ridges set on the outer surface of the second coating layer is to better engage with the terminal when making the wire end, prevent it from falling off, and improve its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is the overall structural diagram of an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable of the present invention; Figure 2 The invention provides an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to the present invention; Figure 4 This is a schematic diagram of the cable core structure of an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable of the present invention; Figure 5 This is a schematic structural diagram of a coating layer of an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to the present invention; Figure 6 This is a schematic diagram of the second structure of the coating layer of an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to the present invention.

[0017] Legend: 1. Insulating sheath; 2. Armored steel mesh; 3. Galvanized steel wire; 4. Radial moisture barrier; 5. Steel belt armor; 6. Inner lining; 7. Cable core; 8. Longitudinal ribs; 9. Coating layer 1; 10. Coating layer 2; 11. Transverse ribs; 12. Insulating filling layer; 13. Positioning ribs; 14. Positioning grooves; 15. Side grooves; 16. Side ribs; 17. Joint grooves. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0019] Reference Figure 1-6 The embodiment of the present invention is an environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable, which includes four-core conductors. The four-core conductors respectively include a cable core 7. The outer surface of the cable core 7 is provided with a longitudinal ridge 8. The outer periphery of the cable core 7 is fixedly connected with a coating layer 1 9. The outer periphery of the coating layer 1 9 is fixedly connected with a coating layer 2 10. The outer surface of the coating layer 2 10 is provided with a transverse ridge 11. The outer surface of the coating layer 2 10 is fixedly connected with an inner lining layer 6. The outer surface of the inner lining layer 6 is fixedly connected with a steel belt armor 5. The outer surface of the steel belt armor 5 is fixedly connected with a radial moisture barrier 4. The outer surfaces of the four-core conductors are all covered with an insulating filling layer 12. The interior of the insulating filling layer 12 is provided with an armored steel mesh 2. The interior of the insulating filling layer 12 is provided with a galvanized steel wire 3. The outer periphery of the insulating filling layer 12 is provided with an insulating sheath 1. The cross-sectional shape of the insulating sheath 1 is a rhombus. The radial moisture barrier 4 and the insulating filling layer 12 are bonded to each other, and the inner lining 6 wraps the transverse ridge 11 inside.

[0020] The insulating filler layer 12 is made of polyethylene, and the outer surface of the insulating sheath 1 is made of wear-resistant cross-linked polyethylene. The four-core conductors are arranged in a 1-2-1 pattern from top to bottom. Four galvanized steel wires 3 are provided, evenly spaced from top to bottom. The armored steel mesh 2 is located at the junction of the inner side of the diamond-shaped insulating sheath 1 and the insulating filler layer 12.

[0021] The first cladding layer 9 is composed of twelve copper conductors. Each copper conductor has a fan-shaped cross-section. Positioning grooves 14 are provided on the inside of each copper conductor, interlocking with the longitudinal ridges 8. Positioning ridges 13 are provided on the outside of each copper conductor. The second cladding layer 10 is composed of twelve copper conductors. Each copper conductor has a fan-shaped cross-section. Side grooves 15 are provided on the left side of each copper conductor, and side ridges 16 are provided on the right side of each copper conductor. The twelve copper conductors are interlocked with each other through side grooves 15 and side ridges 16. The bottom edges of the individual copper conductors are provided with joint grooves 17 on the left and right sides, respectively. The twelve copper conductors are joined together through joint grooves 17 and then abut against the positioning ridges 13.

[0022] Working Principle: The insulating sheath 1 of this insulated cable has a diamond-shaped cross-section with a sloped surface. Rainwater slides off the slope quickly, preventing water from accumulating on the cable surface and freezing in winter, which would increase the weight of the cable and cause breakage. Furthermore, the diamond-shaped structure makes it difficult for birds to land, reducing the added weight of the cable and ensuring stable power transmission.

[0023] The cable is equipped with four galvanized steel wires 3, spaced evenly from top to bottom. These high-strength wires absorb most of the tension applied to the cable, enhancing its overall tensile strength. After the cable is installed, securing the ends of the galvanized steel wires 3 stabilizes the cable, preventing twisting and ensuring structural stability during use.

[0024] The longitudinal ridges 8 on the outer surface of the cable core 7 engage with the positioning grooves 14 on the inner sides of the individual copper conductors of the sheath 1 (9), firmly surrounding the outer periphery of the cable core 7 and preventing relative displacement between the two. Sheath 1 (9) is composed of twelve sector-shaped copper conductors, each with positioning ridges 13 on its outer sides. Sheath 2 (10) is also composed of twelve sector-shaped copper conductors, each with side grooves 15 on its left side and side ridges 16 on its right side. The twelve copper conductors are interlocked with each other through the side grooves 15 and side ridges 16, and the left and right side engagement grooves 17 on the bottom edges of the individual copper conductors engage with the positioning ridges 13. This structure tightly connects the two sheath layers and the cable core 7, forming a stable whole. This prevents the cable from being deformed by external forces and ensures stable current transmission.

[0025] The radial moisture barrier 4 is bonded to the insulating filler layer 12, preventing moisture from entering the cable, protecting the conductors from moisture and maintaining good electrical conductivity. The inner lining layer 6 encases and protects the transverse ridges 11 on the outer surface of the second sheath 10. These ridges 11 facilitate connection with the terminal block during cable termination, preventing them from falling off, improving wiring stability, and ensuring reliable power transmission.

[0026] The insulating filling layer 12 is made of polyethylene, which has excellent insulation properties and can effectively isolate the wires, prevent current leakage, and ensure the safety of power transmission. The outer surface of the insulating sheath 1 is made of cross-linked polyethylene wear-resistant material to enhance the wear resistance of the cable and extend its service life.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. An environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable, comprising four-core conductors, characterized in that: The four-core conductors respectively include a cable core (7), the outer surface of the cable core (7) is provided with a longitudinal ridge (8), the outer periphery of the cable core (7) is fixedly connected to a coating layer 1 (9), the outer periphery of the coating layer 1 (9) is fixedly connected to a coating layer 2 (10), the outer surface of the coating layer 2 (10) is provided with a transverse ridge (11), the outer surface of the coating layer 2 (10) is fixedly connected to an inner lining layer (6), the outer surface of the inner lining layer (6) is fixedly connected to a steel belt armor (5), the outer surface of the steel belt armor (5) is fixedly connected to a radial moisture barrier (4), the outer surfaces of the four-core conductors are all covered with an insulating filling layer (12), the interior of the insulating filling layer (12) is provided with an armored steel mesh (2), the interior of the insulating filling layer (12) is provided with a galvanized steel wire (3), the outer periphery of the insulating filling layer (12) is provided with an insulating sheath (1), and the cross-sectional shape of the insulating sheath (1) is a rhombus.

2. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 1, characterized in that: The insulating filling layer (12) is made of polyethylene material, and the outer surface of the insulating sheath (1) is made of cross-linked polyethylene wear-resistant material.

3. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 1, characterized in that: The four-core conductors are arranged in a 1-2-1 pattern from top to bottom, and four galvanized steel wires (3) are provided and are evenly spaced from top to bottom.

4. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 1, characterized in that: The armored steel mesh (2) is distributed at the junction of the inner side of the diamond-shaped insulating sheath (1) and the insulating filling layer (12).

5. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 1, characterized in that: The coating layer 1 (9) is composed of twelve copper wires, the cross section of each copper wire is fan-shaped, a positioning groove (14) is provided on the inner side of each copper wire, the positioning groove (14) is mutually engaged with the longitudinal edge (8), and a positioning edge (13) is provided on the outer side of each copper wire.

6. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 5, characterized in that: The second coating layer (10) is composed of twelve copper wires, the cross section of each copper wire is fan-shaped, a side groove (15) is provided on the left side of each copper wire, and a side edge (16) is provided on the right side of each copper wire. The twelve copper wires are connected to each other through the side grooves (15) and the side edges (16).

7. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 6, characterized in that: The left and right sides of the bottom edge of a single copper wire are respectively provided with a joining groove (17), and the twelve copper wires are joined to each other through the joining groove (17) and then fit together with the positioning edge (13).

8. The environmentally friendly, tensile-resistant, and wear-resistant overhead insulated cable according to claim 1, characterized in that: The radial moisture barrier layer (4) and the insulating filling layer (12) are joined to each other, and the inner lining layer (6) wraps the transverse rib (11) inside.

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