An interference-resistant, flame-retardant cable

Abstract

This utility model discloses an anti-interference flame-retardant cable, comprising multiple cable core units, a shaping assembly, an outer insulation layer, a flame-retardant layer, an anti-torsion layer, and an outer sheath. Multiple cable core units are mounted on the shaping assembly. The anti-torsion layer has a wavy cross-section. Multiple first anti-torsion strips, cooperating with the anti-torsion layer, protrude outwards from the side of the flame-retardant layer near the anti-torsion layer. The first anti-torsion strips have a fan-shaped structure and are evenly spaced along the circumference of the flame-retardant layer. Multiple second anti-torsion strips, cooperating with the anti-torsion layer, protrude inwards from the side of the outer sheath near the anti-torsion layer. These second anti-torsion strips are evenly spaced along the circumference of the outer sheath. Multiple first reinforcing ribs are provided within the first anti-torsion strips, and multiple second reinforcing ribs are provided within the second anti-torsion strips. This design enables the cable to resist greater torsional forces during torsion and increases its impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular, to an anti-interference flame-retardant cable. Background Technology

[0002] Power cables are cables used for transmitting and distributing electrical energy. They are commonly used in urban underground power grids, power plant lead-out lines, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing. Power cables are cable products used in the main lines of power systems to transmit and distribute high-power electrical energy, including various voltage levels from 1-500KV and above.

[0003] In the prior art, cables usually have an anti-torsion layer, which is composed of elastic clips, reinforcing strips and rollers to form an anti-torsion structure. However, it is difficult to assemble, and the elastic clips are prone to misalignment and movement during use, which affects their support effect on the core wire and rollers, and thus affects the anti-torsion effect on the core wire. Utility Model Content

[0004] Therefore, it is necessary to provide a cable with good anti-torsion performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an anti-interference flame-retardant cable, the anti-interference flame-retardant cable including multiple cable core units, a shaping component, an outer insulation layer wrapped around the cable core units and the shaping component, a flame-retardant layer disposed outside the outer insulation layer, an anti-torsion layer disposed outside the flame-retardant layer, and an outer sheath disposed outside the anti-torsion layer. The multiple cable core units are disposed on the shaping component. The cross-section of the anti-torsion layer has a wavy structure. The flame-retardant layer has multiple first anti-torsion strips protruding outward from the side near the anti-torsion layer, which cooperate with the anti-torsion layer. The first anti-torsion strips have a fan-shaped structure. The multiple first anti-torsion strips are arranged evenly and equally spaced along the circumference of the flame-retardant layer. The outer sheath has multiple second anti-torsion strips protruding inward from the side near the anti-torsion layer, which cooperate with the anti-torsion layer. The multiple second anti-torsion strips are arranged evenly and equally spaced along the circumference of the outer sheath. Multiple first reinforcing ribs are disposed inside the first anti-torsion strips, and multiple second reinforcing ribs are disposed inside the second anti-torsion strips.

[0006] Furthermore, the cable core unit includes a cable core, an inner insulation layer, and a shielding layer. The inner insulation layer wraps around the outside of the cable core, and the shielding layer wraps around the outside of the inner insulation layer.

[0007] Furthermore, the shaping component includes a reinforcing core and a positioning component, the positioning component being disposed outside the reinforcing core.

[0008] Furthermore, the positioning member has multiple receiving slots, and the cable core unit is installed in the receiving slots.

[0009] Furthermore, the reinforcing core is made of steel, and the positioning element is made of rubber material.

[0010] Furthermore, an armor layer, a buffer layer, and a waterproof layer are provided between the outer insulation layer and the flame-retardant layer. The armor layer is wrapped around the outside of the outer insulation layer, the buffer layer is wrapped around the outside of the armor layer, the waterproof layer is wrapped around the outside of the buffer layer, and the flame-retardant layer is wrapped around the outside of the waterproof layer.

[0011] Furthermore, the anti-torsion layer is made of rubber material.

[0012] The beneficial effects of this utility model are as follows: The anti-interference flame-retardant cable provided by this utility model has a wavy cross-section of the anti-torsion layer, and a first anti-torsion strip protrudes outward from the side of the flame-retardant layer near the anti-torsion layer. The first anti-torsion strip cooperates with the anti-torsion layer. A second anti-torsion strip protrudes inward from the side of the outer sheath near the anti-torsion layer. The second anti-torsion strip cooperates with the anti-torsion layer. At the same time, multiple first reinforcing ribs are provided in the first anti-torsion strip and multiple second reinforcing ribs are provided in the second anti-torsion strip. On the one hand, this enables the cable to resist greater torsional force when torsion occurs; on the other hand, it increases the impact resistance of the cable. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the anti-interference and flame-retardant cable of this utility model.

[0015] The component names and their numbers in the figure are as follows: 1. Cable core unit; 11. Cable core; 12. Inner insulation layer; 13. Shielding layer; 2. Shaping component; 21. Reinforcing core; 22. Positioning component; 220. Receiving groove; 3. Outer insulation layer; 4. Armor layer; 5. Buffer layer; 6. Waterproof layer; 7. Flame retardant layer; 70. First anti-torsion strip; 701. First reinforcing rib; 8. Anti-torsion layer; 9. Outer sheath; 90. Second anti-torsion strip; 901. Second reinforcing rib. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1This utility model provides an anti-interference flame-retardant cable, which includes a core unit 1, a shaping component 2, an outer insulation layer 3, a flame-retardant layer 7, an anti-torsion layer 8, and an outer sheath 9. There are multiple core units 1, which are disposed on the shaping component 2. The shaping component 2 is used to fix the multiple core units 1. The outer insulation layer 3 is wrapped around the core unit 1 and the shaping component 2. The flame-retardant layer 7 is disposed outside the outer insulation layer 3. The anti-torsion layer 8 is disposed outside the flame-retardant layer 7. The outer sheath 9 is disposed outside the anti-torsion layer 8. The anti-torsion layer 8 has a wavy cross-section. The flame-retardant layer 7 has a first anti-torsion strip 70 protruding outward on the side near the anti-torsion layer 8. The first anti-torsion strip 70 cooperates with the anti-torsion layer 8. The first anti-torsion strip 70 has a roughly fan-shaped structure. There are multiple first anti-torsion strips 70. The multiple first anti-torsion strips 70 are arranged evenly and at equal intervals along the circumference of the flame-retardant layer 7. The outer protective layer 9 has a second anti-torsion strip 90 protruding inward on the side near the anti-torsion layer 8. The second anti-torsion strip 90 cooperates with the anti-torsion layer 8. There are multiple second anti-torsion strips 90. The multiple second anti-torsion strips 90 are arranged evenly and at equal intervals along the circumference of the outer protective layer 9. Furthermore, the first anti-torsion strip 70 is provided with a plurality of first reinforcing ribs 701, and the second anti-torsion strip 90 is provided with a plurality of second reinforcing ribs 901. By providing the first reinforcing ribs 701 and the second reinforcing ribs 901, on the one hand, the cable can resist greater torsional force when torsion occurs; on the other hand, the impact resistance of the cable can be increased.

[0018] In this embodiment, the outer protective layer 9 is made of neoprene rubber. Neoprene rubber has high strength, good durability, and excellent wear resistance, flame retardancy, light resistance, ozone resistance, and atmospheric aging resistance. It also has good elasticity and is resistant to impact and vibration. The anti-torsion layer 8 is made of rubber. The flame retardant layer 7 is made of low-smoke halogen-free flame-retardant polyolefin material.

[0019] The cable core unit 1 includes a cable core 11, an inner insulation layer 12, and a shielding layer 13. The inner insulation layer 12 wraps around the outside of the cable core 11, and the shielding layer 13 wraps around the outside of the inner insulation layer 12. The shielding layer 13 is provided to effectively reduce or eliminate interference from external electromagnetic fields, thereby protecting the cable core 11.

[0020] The shaping component 2 includes a reinforcing core 21 and a positioning member 22. The positioning member 22 is disposed outside the reinforcing core 21 and has multiple receiving slots 220. The cable core unit 1 is installed in the receiving slots 220. In this embodiment, the reinforcing core 21 is made of steel, and the positioning member 22 is made of rubber.

[0021] An armor layer 4, a buffer layer 5, and a waterproof layer 6 are provided between the outer insulation layer 3 and the flame retardant layer 7. The armor layer 4 is wrapped around the outer insulation layer 3, the buffer layer 5 is wrapped around the outer armor layer 4, the waterproof layer 6 is wrapped around the outer buffer layer 5, and the flame retardant layer 7 is wrapped around the outer waterproof layer 6. In this embodiment, the waterproof layer 6 is formed by repeatedly wrapping paraffin wax tape. Paraffin wax emulsifier is impregnated on the surface of the cotton cloth to form the paraffin wax tape. After emulsification, the paraffin wax becomes fine particles. Paraffin wax has strong hydrophobicity, thus providing good waterproof performance. The buffer layer 5 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. Mineral wool is a cotton-like short fiber made from silicate melts, including slag wool, rock wool, glass wool, and ceramic fibers. Because the buffer layer 5 uses mineral wool as a buffer material, the fine particles on the waterproof layer 6 are not damaged, thus preserving the hydrophobic properties of the waterproof layer 6. This protects the waterproof layer 6, prevents cable aging, and extends the cable's service life. The armor layer 4 is formed by stranding flat steel wires. 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 can also be formed by stranding round steel wires, round copper wires, or flat copper wires.

[0022] The anti-interference flame-retardant cable provided by this utility model has a wavy cross-section for the anti-torsion layer 8, and a first anti-torsion strip 70 protruding outward from the side of the flame-retardant layer 7 near the anti-torsion layer 8, which cooperates with the anti-torsion layer 8. A second anti-torsion strip 90 protruding inward from the side of the outer sheath 9 near the anti-torsion layer 8, which cooperates with the anti-torsion layer 8, is provided. At the same time, multiple first reinforcing ribs 701 are provided in the first anti-torsion strip 70, and multiple second reinforcing ribs 901 are provided in the second anti-torsion strip 90. On the one hand, this enables the cable to resist greater torsional force when torsion occurs; on the other hand, it increases the impact resistance of the cable.

[0023] 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. An anti-interference flame-retardant cable, characterized in that: The anti-interference flame-retardant cable includes multiple cable core units, a shaping assembly, an outer insulation layer wrapped around the cable core units and the shaping assembly, a flame-retardant layer disposed outside the outer insulation layer, an anti-torsion layer disposed outside the flame-retardant layer, and an outer sheath disposed outside the anti-torsion layer. Multiple cable core units are disposed on the shaping assembly. The anti-torsion layer has a wavy cross-section. Multiple first anti-torsion strips, cooperating with the anti-torsion layer, protrude outwards from the side of the flame-retardant layer near the anti-torsion layer. The first anti-torsion strips have a fan-shaped structure and are evenly spaced along the circumference of the flame-retardant layer. Multiple second anti-torsion strips, cooperating with the anti-torsion layer, protrude inwards from the side of the outer sheath near the anti-torsion layer. The multiple second anti-torsion strips are evenly spaced along the circumference of the outer sheath. Multiple first reinforcing ribs are disposed within the first anti-torsion strips, and multiple second reinforcing ribs are disposed within the second anti-torsion strips.

2. The flame-retardant, interference-resistant cable of claim 1, wherein: The cable core unit includes a cable core, an inner insulation layer, and a shielding layer. The inner insulation layer is wrapped around the outside of the cable core, and the shielding layer is wrapped around the outside of the inner insulation layer.

3. The flame-retardant, interference-resistant cable of claim 1, wherein: The shaping component includes a reinforcing core and a positioning element, wherein the positioning element is disposed on the outside of the reinforcing core.

4. The flame-retardant, interference-resistant cable of claim 3, wherein: The positioning component has multiple receiving slots, and the cable core unit is installed in the receiving slots.

5. The flame-retardant, interference-resistant cable of claim 3, wherein: The reinforcing core is made of steel, and the positioning element is made of rubber.

6. The flame-retardant, interference-resistant cable of claim 1, wherein: An armor layer, a buffer layer, and a waterproof layer are further provided between the outer insulation layer and the flame-retardant layer. The armor layer is wrapped around the outside of the outer insulation layer, the buffer layer is wrapped around the outside of the armor layer, the waterproof layer is wrapped around the outside of the buffer layer, and the flame-retardant layer is wrapped around the outside of the waterproof layer.

7. The anti-interference flame-retardant cable as described in claim 1, characterized in that: The anti-torsion layer is made of rubber material.

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