Tensile and compressive power cable

Abstract

The utility model belongs to the technical field of cables, and provides a tensile and compressive power cable, which comprises a protective layer and a first conductor, the first conductor is fixedly connected with a semi-conductive conductor shielding layer, and one side of the semi-conductive conductor shielding layer far away from the first conductor is fixedly connected with a crosslinked polyethylene insulating layer. The side, away from the semi-conductive conductor shielding layer, of the cross-linked polyethylene insulating layer is fixedly connected with a second tensile layer, the side, away from the cross-linked polyethylene insulating layer, of the second tensile layer is fixedly connected with a first tensile layer, and the protective layer is made of rubber. According to the utility model, through the arrangement of the first tensile layer and the second tensile layer, the materials can effectively resist deformation and damage of the cable under the action of external force such as stretching, compression, bending and the like, and the cable has extremely high tensile capability and can bear a large amount of tensile force without being broken or deformed; therefore, the transmission performance, the safety performance and the durability of the cable can be jointly ensured, the transmission efficiency of the cable is improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a tensile and compressive resistant power cable. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station outbound lines, internal power supplies for industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is steadily increasing. Power cables are used to transmit and distribute high-power electrical energy within the backbone lines of power systems. These cables include power cables with voltages ranging from 1 to 500 kV and above, and with various insulation options. China's cable manufacturing industry has achieved impressive production capacity. With the continued expansion of China's power, data communications, urban rail transit, automotive, and shipbuilding industries, demand for wires and cables is expected to grow rapidly, and the industry holds enormous potential for future development. Wires and cables play a crucial role in my country's infrastructure. With my country's continuous development, the traditional power cable industry model is no longer adaptable to the ever-changing market and demand. Therefore, for many companies, transformation is imperative. However, existing power cables have poor tensile and compressive strength, are prone to breakage, and have a short service life. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a tensile and compressive resistant power cable.

[0004] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a tensile and compressive resistant power cable, comprising a protective layer and a first conductor, a semi-conductive conductor shielding layer fixedly connected to the first conductor, a cross-linked polyethylene insulation layer fixedly connected to the side of the semi-conductive conductor shielding layer away from the first conductor, a second tensile layer fixedly connected to the side of the cross-linked polyethylene insulation layer away from the semi-conductive conductor shielding layer, and the first tensile layer fixedly connected to the side of the second tensile layer away from the cross-linked polyethylene insulation layer, and the material of the protective layer is rubber.

[0005] As a further description of the above technical solution:

[0006] A double-layer armor is fixedly connected to the protective layer, an isolation sleeve is fixedly connected to the side of the double-layer armor away from the protective layer, a filling rope is fixedly connected to the side of the isolation sleeve away from the double-layer armor, and the side of the filling rope away from the isolation sleeve is fixedly connected to the first tensile layer.

[0007] As a further description of the above technical solution:

[0008] The first conductor, the semi-conductive conductor shielding layer, the cross-linked polyethylene insulation layer, the second tensile layer and the first tensile layer are provided in three groups, and the three groups of the first conductors are distributed in a triangle.

[0009] As a further description of the above technical solution:

[0010] The first tensile layer and the second tensile layer are made of steel strip or stainless steel foil.

[0011] As a further description of the above technical solution:

[0012] The filling rope is made of polypropylene rope or glass fiber rope.

[0013] As a further description of the above technical solution:

[0014] The first conductor is made of copper.

[0015] As a further description of the above technical solution:

[0016] The first conductor is composed of a plurality of groups of pure copper wires.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the present invention, by providing a first tensile layer and a second tensile layer, these materials can effectively resist deformation and damage of the cable under external forces such as stretching, compression and bending, have extremely high tensile strength, and can withstand a large amount of tension without breaking or deforming, thereby jointly ensuring the transmission performance, safety performance and durability of the cable, improving the transmission efficiency of the cable and extending the service life of the cable.

[0019] 2. In the utility model, by providing a protective layer and a double-layer armor, the corrosion resistance, compression and tensile strength and water resistance of the cable can be improved. Secondly, by providing a filling rope, the cable shape can be rounded and the structure can be stable, the density and center of gravity of the cable can be increased, and the mechanical strength, insulation performance, heat resistance, cold resistance and aging resistance of the cable can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a tensile and compressive resistant power cable proposed by the utility model;

[0021] Figure 2 This is a diagram of the internal structure of a tensile and compressive power cable proposed by the utility model.

[0022] Legend:

[0023] 1. Protective layer; 2. Double-layer armor; 3. Isolation sleeve; 4. Filling rope; 5. First tensile layer; 6. Second tensile layer; 7. Cross-linked polyethylene insulation layer; 8. Semi-conductive conductor shielding layer; 9. First conductor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 2 The utility model provides an embodiment: a tensile and compressive resistant power cable, comprising a protective layer 1 and a first conductor 9, a semi-conductive conductor shielding layer 8 fixedly connected to the first conductor 9, a cross-linked polyethylene insulation layer 7 fixedly connected to the side of the semi-conductive conductor shielding layer 8 away from the first conductor 9, a second tensile layer 6 fixedly connected to the side of the cross-linked polyethylene insulation layer 7 away from the semi-conductive conductor shielding layer 8, and a first tensile layer 5 fixedly connected to the side of the second tensile layer 6 away from the cross-linked polyethylene insulation layer 7. The protective layer 1 is made of rubber. By providing the first tensile layer 5 and the second tensile layer 6, these materials can effectively resist deformation and damage of the cable under external forces such as stretching, compression and bending, have extremely high tensile strength, and can withstand a large amount of tension without breaking or deforming, thereby jointly ensuring the transmission performance, safety performance and durability of the cable, improving the transmission efficiency of the cable, and extending the service life of the cable.

[0026] A double-layer armor 2 is fixedly connected to the protective layer 1, an isolation sleeve 3 is fixedly connected to the side of the double-layer armor 2 away from the protective layer 1, a filling rope 4 is fixedly connected to the side of the isolation sleeve 3 away from the double-layer armor 2, and the side of the filling rope 4 away from the isolation sleeve 3 is fixedly connected to the first tensile layer 5. The first conductor 9, the semi-conductive conductor shielding layer 8, the cross-linked polyethylene insulation layer 7, the second tensile layer 6, and the first tensile layer 5 are provided in three groups. The three groups of first conductors 9 are distributed in a triangle. The first tensile layer 5 and the second tensile layer 6 are made of steel strip and stainless steel foil, the filling rope 4 is made of polypropylene rope and glass fiber rope, and the first conductor 9 is made of copper. The first conductor 9 is composed of multiple groups of pure copper wires. By providing the protective layer 1 and the double-layer armor 2, the corrosion resistance, compressive tensile resistance and water resistance of the cable can be improved. Secondly, by providing the filling rope 4, the cable shape can be rounded and the structure can be stable, the density and center of gravity of the cable can be increased, and the mechanical strength, insulation performance, heat resistance, cold resistance and aging resistance of the cable can be improved.

[0027] Working principle: First, by providing a protective layer 1 and a double-layer armor 2, the cable can be effectively isolated from the external environment, preventing dust, dirt, moisture and other impurities from invading the interior of the cable, thereby keeping the cable dry and clean, avoiding the degradation of cable insulation performance or short circuit and other faults caused by the erosion of impurities and moisture, and having a certain mechanical strength and wear resistance, and can withstand the impact and wear of external mechanical forces, protect the internal structure of the cable from external damage, and prevent the cable from being scratched by sharp objects, crushed by heavy objects or bitten by animals during laying, operation or maintenance. At the same time, a first tensile layer 5 and a second tensile layer 6 are provided. These materials can effectively resist the cable in tension, compression and The filling rope 4 is provided to provide the necessary support for the cable, which helps to maintain the stability and integrity of the cable structure and prevent the cable from being deformed or damaged when subjected to external forces. In multi-core cables, the insulated cores or pairs may not be round after being cabled, and there may be large gaps between the insulated cores. The addition of the filling rope 4 can effectively fill these gaps, making the cable shape more round and the structure more compact.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tensile and compressive resistant power cable, comprising a protective layer (1) and a first conductor (9), characterized in that: A semiconductive conductor shielding layer (8) is fixedly connected to the first conductor (9); a cross-linked polyethylene insulation layer (7) is fixedly connected to the side of the semiconductive conductor shielding layer (8) away from the first conductor (9); a second tensile layer (6) is fixedly connected to the side of the cross-linked polyethylene insulation layer (7) away from the semiconductive conductor shielding layer (8); and a first tensile layer (5) is fixedly connected to the side of the second tensile layer (6) away from the cross-linked polyethylene insulation layer (7); and the material of the protective layer (1) is rubber.

2. The tensile and compressive resistant power cable according to claim 1, characterized in that: The protective layer (1) is fixedly connected to a double-layer armor (2), a side of the double-layer armor (2) away from the protective layer (1) is fixedly connected to an isolation sleeve (3), a side of the isolation sleeve (3) away from the double-layer armor (2) is fixedly connected to a filling rope (4), and a side of the filling rope (4) away from the isolation sleeve (3) is fixedly connected to the first tensile layer (5).

3. The tensile and compressive resistant power cable according to claim 2, characterized in that: The first conductor (9), the semi-conductive conductor shielding layer (8), the cross-linked polyethylene insulating layer (7), the second tensile layer (6), and the first tensile layer (5) are provided in three groups, and the three groups of the first conductors (9) are distributed in a triangular shape.

4. The tensile and compressive resistant power cable according to claim 3, characterized in that: The first tensile layer (5) and the second tensile layer (6) are made of steel strips and stainless steel foils.

5. The tensile and compressive resistant power cable according to claim 4, characterized in that: The filling rope (4) is made of polypropylene rope or glass fiber rope.

6. The tensile and compressive resistant power cable according to claim 5, characterized in that: The first conductor (9) is made of copper.

7. The tensile and compressive resistant power cable according to claim 6, characterized in that: The first conductor (9) is composed of a plurality of groups of pure copper wires.

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