A wear-resistant and pressure-resistant insulated high-voltage power cable

Abstract

This utility model discloses a wear-resistant and pressure-resistant insulated high-voltage power cable, which includes a shaping component, multiple cable core units, and a buffer layer. The shaping component includes a central column, a partition plate, a shaping sleeve, and a guide plate. Two adjacent partition plates and the shaping sleeve together form a first cavity. The cable core units are disposed in the first cavity. The two guide plates and the shaping sleeve together form a second cavity. The first cavity and the second cavity are connected. A heat-conducting strip is disposed in the second cavity. Multiple pressure-resistant plates are disposed in the buffer layer. Heat-conducting grooves are formed on both the shaping sleeve and the buffer layer, and the heat-conducting grooves are correspondingly arranged with the heat-conducting strips and pressure-resistant plates. In this wear-resistant and pressure-resistant insulated high-voltage power cable, the cable core units generate heat during operation. The heat is transferred to the heat-conducting strips for heat dissipation through the guide plate. Excess heat can be transferred to the pressure-resistant plates through the heat-conducting grooves, thereby further reducing the heat in the first and second cavities. This results in good thermal conductivity and extends the service life of the cable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular, to a wear-resistant and pressure-resistant insulated high-voltage power cable. Background Technology

[0002] With the continuous development of cities and industrialized cities, the demand for electricity is constantly increasing. Power facilities are developing towards large-capacity (high voltage, high current) transmission, which puts higher demands and requirements on high-voltage power cables, and their application range is becoming wider.

[0003] In the existing technology, cables include an outer sheath and one or more inner cores. The inner part of the outer sheath is a space that is interconnected. Therefore, when one core catches fire or when one core heats up locally, the cores will affect each other, which can lead to the destruction of the entire cable, posing a safety hazard. The cable also has poor thermal conductivity, which affects its service life. Utility Model Content

[0004] Therefore, it is necessary to provide a high-voltage power cable with good thermal conductivity, wear resistance, and pressure resistance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a wear-resistant and pressure-resistant insulated high-voltage power cable, the wear-resistant and pressure-resistant insulated high-voltage power cable including a shaping component, multiple cable core units installed on the shaping component, and a buffer layer wrapped around the shaping component. The shaping component includes a central column disposed at the middle position of the multiple cable core units, a partition plate disposed between two adjacent cable core units, a shaping sleeve disposed outside the multiple cable core units, and a guide plate inclinedly disposed within the shaping sleeve. The two adjacent partition plates and the shaping sleeve together form a first cavity, the cable core units are disposed in the first cavity, the two guide plates and the shaping sleeve together form a second cavity, the first cavity and the second cavity are connected, a heat-conducting strip is disposed in the second cavity, multiple pressure-resistant plates are disposed in the buffer layer, and heat-conducting grooves are opened on both the shaping sleeve and the buffer layer. The heat-conducting grooves are correspondingly disposed with the heat-conducting strips and the pressure-resistant plates.

[0006] Furthermore, a third cavity is formed between the shaping sleeve and the buffer layer, and an anti-compression strip is provided in the third cavity.

[0007] Furthermore, the cross-section of the shaping sleeve has a pentagonal star shape.

[0008] Furthermore, the wear-resistant and pressure-resistant insulated high-voltage power cable also includes a wrapping layer disposed outside the buffer layer, a fireproof layer disposed outside the wrapping layer, and a pressure-resistant layer disposed outside the fireproof layer.

[0009] Furthermore, each of the cable core units includes a cable core and an insulation layer, the insulation layer being wrapped around the outside of the cable core.

[0010] Furthermore, an armor layer is provided between the buffer layer and the wrapping layer, the armor layer wrapping the outside of the buffer layer and the wrapping layer wrapping the outside of the armor layer.

[0011] Furthermore, a waterproof layer is provided between the wrapping layer and the fireproof layer, the waterproof layer wrapping the outside of the wrapping layer, and the fireproof layer wrapping the outside of the waterproof layer.

[0012] Furthermore, the pressure-resistant layer is also wrapped with an outer protective layer.

[0013] Furthermore, the cable core unit has five units.

[0014] The beneficial effects of this utility model are as follows: The wear-resistant and pressure-resistant insulated high-voltage power cable provided by this utility model has a shaping component 1, and two guide plates are inclinedly arranged inside the shaping sleeve. The two adjacent partition plates and the shaping sleeve together form a first cavity. The cable core unit is arranged in the first cavity, and the two guide plates and the shaping sleeve together form a second cavity. The first cavity and the second cavity are connected. A heat-conducting strip is arranged in the second cavity. Heat-conducting grooves are opened on both the shaping sleeve and the buffer layer. The heat-conducting grooves are correspondingly arranged with the heat-conducting strips and the pressure-resistant plate. When the cable core unit is working, it generates heat. The heat is transferred to the heat-conducting strips through the guide plates for heat dissipation. Excess heat can be transferred to the pressure-resistant plate through the heat-conducting grooves, thereby further reducing the heat in the first cavity and the second cavity. It has good thermal conductivity and thus extends the service life of the cable. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the wear-resistant and pressure-resistant insulated high-voltage power cable of this utility model.

[0017] The component names and their numbers in the figure are as follows: 1. Shaping component; 11. Center column; 12. Partition plate; 13. Shaping sleeve; 130. Heat conduction groove; 14. Inclined plate; 15. Heat conduction strip; 10. First cavity; 20. Second cavity; 30. Pressure-resistant strip; 2. Cable core unit; 21. Cable core; 22. Insulation layer; 3. Buffer layer; 31. Pressure-resistant plate; 4. Armor layer; 5. Wrapping tape layer; 6. Waterproof layer; 7. Fireproof layer; 8. Pressure-resistant layer; 9. Outer sheath. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] Please see Figure 1 This utility model provides a wear-resistant and pressure-resistant insulated high-voltage power cable, which includes a shaping component 1, a cable core unit 2, a buffer layer 3, a wrapping layer 5, a fireproof layer 7, and a pressure-resistant layer 8. There are multiple cable core units 2, which are installed on the shaping component 1. The buffer layer 3 is wrapped around the outside of the shaping component 1. The wrapping layer 5 is disposed outside the buffer layer 3. The fireproof layer 7 is disposed outside the wrapping layer 5. The pressure-resistant layer 8 is wrapped around the outside of the fireproof layer 7.

[0020] In this embodiment, the compression-resistant layer 8 is made of cross-linked polyethylene. Cross-linked polyethylene is a thermosetting plastic formed by cross-linking polyethylene, which has higher mechanical strength and heat resistance, thus improving the cable's compression resistance. The wrapping layer 5 is made of halogen-free, low-smoke, and high-temperature resistant glass fiber material. This halogen-free, low-smoke, and high-temperature resistant glass fiber material can remain non-combustible at around 900°C when exposed to fire, preventing flames from passing through, isolating air, protecting the cable from combustion, and not releasing toxic gases such as hydrogen chloride or large amounts of smoke. The buffer layer 3 uses mineral wool as a buffer material. Mineral wool and its products have advantages such as being lightweight, durable, non-flammable, non-corrosive, and resistant to insects. They are excellent heat insulation and sound absorption materials. The cotton-like short fibers made from silicate melts include slag wool, rock wool, glass wool, and ceramic fibers, which further enhance the cable's compression resistance. Fireproof layer 7 is made of mica material, which has excellent high temperature resistance and flame resistance, as well as good flexibility. When exposed to open flame, it basically does not release harmful fumes, effectively ensuring the safety of the cable during use.

[0021] The shaping component 1 includes a central post 11, partition plates 12, a shaping sleeve 13, and guide plates 14. The central post 11 is positioned at the center of multiple cable core units 2. Multiple partition plates 12 are fixedly connected to the central post 11 and positioned between adjacent cable core units 2, serving to separate them. The shaping sleeve 13 is positioned outside the multiple cable core units 2 and fixedly connected to the partition plates 12. Two guide plates 14 are inclinedly positioned within the shaping sleeve 13. In this embodiment, the shaping sleeve 13 has a pentagonal cross-section, and the shaping component 1 is made of rubber. Further, the shaping component 1 is integrally molded. In other embodiments, the shaping component 1 can be separately disposed.

[0022] Furthermore, the two adjacent partition plates 12 and the shaping sleeve 13 together form a first cavity 10, and the cable core unit 2 is disposed within the first cavity 10. The two guide plates 14 and the shaping sleeve 13 together form a second cavity 20. The first cavity 10 and the second cavity 20 are connected, and a heat-conducting strip 15 is disposed within the second cavity 20. In this embodiment, the heat-conducting strip 15 is made of thermally conductive silicone material. During use, the cable core unit 2 generates heat during operation, and the heat is transferred to the heat-conducting strip 15 through the guide plates 14 for heat dissipation.

[0023] A third cavity (not shown in the figure) is formed between the shaping sleeve 13 and the buffer layer 3. A pressure-resistant strip 30 is disposed within this third cavity. The pressure-resistant strip 30 has a triangular cross-section, which further increases the cable's pressure resistance. In this embodiment, the pressure-resistant strip 30 is made of cross-linked polyethylene material. Cross-linked polyethylene is a thermosetting plastic formed by cross-linking polyethylene, which has higher mechanical strength and heat resistance, thus improving the cable's pressure resistance.

[0024] Each cable core unit 2 includes a cable core 21 and an insulation layer 22, the insulation layer 22 being wrapped around the outside of the cable core 21. Furthermore, there are five cable core units 2.

[0025] Furthermore, a plurality of pressure-resistant plates 31 are provided within the buffer layer 3, and the pressure-resistant plates 31 correspond to the heat-conducting strips 15. In this embodiment, the pressure-resistant plates 31 are made of polyvinyl chloride (PVC) material, which has good corrosion resistance, heat resistance, flame retardancy, mechanical properties, and insulation properties.

[0026] Furthermore, heat-conducting grooves 130 are provided on both the shaping sleeve 13 and the buffer layer 3, and the heat-conducting grooves 130 are correspondingly arranged with the heat-conducting strip 15 and the pressure-resistant plate 31. During use, excess heat can be transferred to the pressure-resistant plate 31 through the heat-conducting grooves 130, thereby further reducing the heat in the first cavity 10 and the second cavity 20. The heat conduction performance is good, thus extending the service life of the cable.

[0027] An armor layer 4 is disposed between the buffer layer 3 and the wrapping layer 5. The armor layer 4 wraps around the outside of the buffer layer 3, and the wrapping layer 5 wraps around the outside of the armor layer 4. In this embodiment, the armor layer 4 is made of flat steel wires twisted together. When the cable is subjected to external pressure, the pressure passes through the armor layer 4, which provides pressure resistance to the cable. In other embodiments not shown, the armor layer 4 may also be made of round steel wires, round copper wires, or flat copper wires twisted together.

[0028] A waterproof layer 6 is disposed between the wrapping layer 5 and the fireproof layer 7. The waterproof layer 6 wraps around the outside of the wrapping layer 5, and the fireproof layer 7 wraps around the outside of the waterproof layer 6. In this embodiment, the waterproof layer 6 is an ethylene propylene diene monomer (EPDM) rubber layer. EPDM rubber is a terpolymer of ethylene, propylene, and a non-conjugated diene. Its main characteristics are its superior resistance to oxidation, ozone, and corrosion, as well as its aging resistance, corrosion resistance, water vapor resistance, resistance to superheated water, and electrical insulation properties.

[0029] The outer protective layer 9 is also wrapped around the pressure-resistant layer 8. In this embodiment, the outer protective layer 9 is made of neoprene rubber. Neoprene rubber has high strength, good durability, excellent wear resistance, flame retardancy, light resistance, ozone resistance and atmospheric aging resistance, and good elasticity, and is resistant to impact and vibration.

[0030] The wear-resistant and pressure-resistant insulated high-voltage power cable provided by this utility model has a shaping component 1 and two guide plates 14 inclinedly arranged in the shaping sleeve 13. The two adjacent partition plates 12 and the shaping sleeve 13 together form a first cavity 10. The cable core unit 2 is arranged in the first cavity 10. The two guide plates 14 and the shaping sleeve 13 together form a second cavity 20. The first cavity 10 and the second cavity 20 are connected. A heat-conducting strip 15 is arranged in the second cavity 20. Heat-conducting grooves 130 are opened on the shaping sleeve 13 and the buffer layer 3. The heat-conducting grooves 130, heat-conducting strips 15 and pressure-resistant plates 31 are all correspondingly arranged. When the cable core unit 2 is working, it generates heat. The heat is transferred to the heat-conducting strips 15 through the guide plates 14 for heat dissipation. Excess heat can be transferred to the pressure-resistant plate 31 through the heat-conducting grooves 130, thereby further reducing the heat in the first cavity 10 and the second cavity 20. It has good thermal conductivity and thus extends the service life of the cable.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A wear and pressure resistant insulation type high voltage power cable, characterized by: The wear-resistant and pressure-resistant insulated high-voltage power cable includes a shaping component, multiple cable core units mounted on the shaping component, and a buffer layer wrapped around the shaping component. The shaping component includes a central column located at the middle position of the multiple cable core units, a partition plate located between two adjacent cable core units, a shaping sleeve located outside the multiple cable core units, and a guide plate inclinedly located inside the shaping sleeve. The two adjacent partition plates and the shaping sleeve together form a first cavity, and the cable core units are located in the first cavity. The two guide plates and the shaping sleeve together form a second cavity. The first cavity and the second cavity are connected. A heat-conducting strip is provided in the second cavity. Multiple pressure-resistant plates are provided in the buffer layer. Heat-conducting grooves are provided on both the shaping sleeve and the buffer layer. The heat-conducting grooves are correspondingly provided with the heat-conducting strips and the pressure-resistant plates.

2. The wear-resistant and voltage-resistant insulated high-voltage power cable as described in claim 1, characterized in that: The shaping sleeve and the buffer layer form a third cavity, and an anti-compression strip is provided in the third cavity.

3. The wear and pressure resistant insulation type high voltage power cable according to claim 2, characterized in that: The cross-section of the shaping sleeve has a pentagonal star shape.

4. The wear and pressure resistant insulation type high voltage power cable of claim 1, wherein: The wear-resistant and pressure-resistant insulated high-voltage power cable also includes a wrapping layer disposed outside the buffer layer, a fireproof layer disposed outside the wrapping layer, and a pressure-resistant layer disposed outside the fireproof layer.

5. The wear and pressure resistant insulation type high voltage power cable of claim 1, wherein: Each of the cable core units includes a cable core and an insulation layer, the insulation layer being wrapped around the outside of the cable core.

6. The wear-resistant and voltage-resistant insulated high-voltage power cable as described in claim 4, characterized in that: An armor layer is provided between the buffer layer and the wrapping layer, the armor layer wrapping the outside of the buffer layer, and the wrapping layer wrapping the outside of the armor layer.

7. The wear and pressure resistant insulation type high voltage power cable according to claim 4, characterized in that: A waterproof layer is provided between the wrapping layer and the fireproof layer, the waterproof layer wrapping the outside of the wrapping layer, and the fireproof layer wrapping the outside of the waterproof layer.

8. The wear and pressure resistant insulation type high voltage power cable of claim 4, wherein: The compressive layer is further wrapped with an outer protective layer.

9. The wear and pressure resistant insulation type high voltage power cable of claim 1, wherein: The cable core unit has five.

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