Crosslinked extruded power cable

Abstract

The utility model belongs to the field of power cables, particularly relates to a cross-linked extruded power cable, and provides the following scheme aiming at the problems that the existing single polyvinyl chloride has a limited supporting effect on the cable and is easy to wear when being dragged, the cross-linked extruded power cable comprises a plurality of leads, and a wrapping tape is arranged among the leads. The outer wall of the wrapping tape is provided with a steel tape armor, the outer wall of the steel tape armor is provided with a plurality of strip-shaped water-swelling water-stopping strips, and an outer protective layer is arranged between the outer walls of the water-swelling water-stopping strips; the plurality of supporting assemblies are all arranged between the steel tape armoring and the outer protective layer and used for supporting the cable, the steel tape armoring prevents external force from damaging the interior of the cable, and meanwhile, the steel tape armoring is matched with the water-swelling water stop strip to achieve a waterproof effect; the inner ring, the outer ring and the fins can further support the cable, improve the wear resistance of the outer protective layer, and conduct heat in the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a cross-linked extruded power cable. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing.

[0003] When the existing power cables are in use, the outer ring is usually made of polyvinyl chloride to protect the whole cable. However, the single polyvinyl chloride has limited supporting effect on the cable, and it is easy to wear during dragging. Therefore, a cross-linked extruded power cable is proposed. Summary of the Invention

[0004] The purpose of the utility model is to solve the shortcomings that the single polyvinyl chloride has limited supporting effect on the cable and is easy to wear during dragging in the prior art, and a cross-linked extruded power cable is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A cross-linked extruded power cable includes a plurality of conductors. A tape is arranged between the plurality of conductors. A steel tape armor is arranged on the outer wall of the tape. A plurality of strip-shaped water-swellable water stop strips are arranged on the outer wall of the steel tape armor. An outer sheath is arranged between the outer walls of the water-swellable water stop strips.

[0007] A plurality of support components are arranged between the steel tape armor and the outer sheath for supporting the cable.

[0008] As a further scheme of the utility model, the support component includes an inner ring and an outer ring. A plurality of fins are arranged between the inner ring and the outer ring. The inner ring is sleeved on the outer wall of the steel tape armor. The outer ring is located inside the outer sheath and its outer wall is flush with the outer wall of the outer sheath. The plurality of water-swellable water stop strips are respectively located in the spaces between the plurality of fins.

[0009] As a further scheme of the utility model, the conductor includes a conductor core. A conductor shield layer is arranged on the circumference of the conductor core. An insulating layer is arranged on the outer wall of the conductor shield layer. An insulating shield layer is arranged on the outer wall of the insulating layer. A metal shield layer is arranged on the outer wall of the insulating shield layer.

[0010] As a further scheme of the utility model, a filling cord is arranged between the conductor and the tape.

[0011] As a further scheme of the utility model, the inner ring, the outer ring and the fins are made of alumina ceramics.

[0012] As a further solution of the present utility model, both the conductor shielding layer and the insulation shielding layer are made of polyethylene material, the insulation layer is made of polyvinyl chloride material, and the metal shielding layer is aluminum.

[0013] As a further solution of the present utility model, the outer sheath is made of polyurethane material.

[0014] In this application, during use, the wire is fixed by being wrapped with a tape, and the gaps between the wires are filled with a filling cord. The steel tape armor outside the tape can effectively protect the cable or transmission line, avoiding damage caused by external forces. The steel tape armor and the outer sheath outside cooperate to protect the interior. When the outer sheath is punctured sharply and rainwater or other water enters the interior of the outer sheath, it can be absorbed by the water-swellable water-stop strip. After absorbing water, the water-swellable water-stop strip swells, thereby blocking water. Used in conjunction with the steel tape armor, it increases the service life of the cable. At the same time, the inner ring, outer ring, and fins can further support the cable, and the outer ring is flush with the outer wall of the outer sheath, increasing the wear resistance of the outer sheath. At the same time, heat can be conducted to the interior of the cable through the inner ring, outer ring, and fins, increasing the heat dissipation effect of the cable. Beneficial effects

[0015] In the present utility model, for the cross-linked extrusion power cable, through the combined use of the steel tape armor and the water-swellable water-stop strip, the steel tape armor avoids damage to the interior of the cable caused by external forces, and at the same time, in cooperation with the water-swellable water-stop strip, it also has a waterproof effect;

[0016] In the present utility model, for the cross-linked extrusion power cable, through the arrangement of installing a support component between the steel tape armor and the outer sheath, the inner ring, outer ring, and fins can further support the cable, and the outer ring is flush with the outer wall of the outer sheath, increasing the wear resistance of the outer sheath. At the same time, heat can be conducted to the interior of the cable through the inner ring, outer ring, and fins, increasing the heat dissipation effect of the cable;

[0017] In the present utility model, the steel tape armor avoids damage to the interior of the cable caused by external forces, and at the same time, in cooperation with the water-swellable water-stop strip, it also has a waterproof effect. The inner ring, outer ring, and fins can further support the cable, increase the wear resistance of the outer sheath, and can also conduct heat to the interior of the cable. Description of the drawings

[0018] Figure 1 It is a three-dimensional structure schematic diagram of a cross-linked extrusion power cable proposed by the present utility model;

[0019] Figure 2 It is a cross-sectional structure schematic diagram of a cross-linked extrusion power cable proposed by the present utility model;

[0020] Figure 3 This is a schematic diagram of a partial cross-section structure of a cross-linked extruded power cable proposed by the present utility model;

[0021] Figure 4 This is a schematic diagram of a guiding cross-section structure of a cross-linked extruded power cable proposed by the present utility model.

[0022] In the figure: 1. Outer sheath; 2. Conductor; 3. Tape; 4. Steel tape armor; 5. Water-swellable water-stop strip; 6. Inner ring; 7. Outer ring; 8. Fins; 9. Conductor; 10. Conductor shielding layer; 11. Insulation layer; 12. Insulation shielding layer; 13. Metal shielding layer; 14. Filling rope. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Embodiment

[0024] Referring to Figures 1 - 4 , a cross-linked extruded power cable includes: a plurality of conductors 2, a tape 3 is arranged between the plurality of conductors 2, a steel tape armor 4 is arranged on the outer wall of the tape 3, and the steel tape armor 4 can effectively protect the cable or transmission line and avoid damage caused by external forces. A plurality of strip-shaped water-swellable water-stop strips 5 are arranged on the outer wall of the steel tape armor 4, and an outer sheath 1 is arranged between the outer walls of the water-swellable water-stop strips 5. The water-swellable water-stop strip 5 expands after absorbing water, thereby blocking water, and is used in conjunction with the steel tape armor 4 to increase the service life of the cable;

[0025] A plurality of support components are arranged between the steel tape armor 4 and the outer sheath 1 for supporting the cable.

[0026] In the present utility model, the support component includes an inner ring 6 and an outer ring 7, a plurality of fins 8 are arranged between the inner ring 6 and the outer ring 7, the inner ring 6 is sleeved on the outer wall of the steel tape armor 4, the outer ring 7 is located inside the outer sheath 1 and its outer wall is flush with the outer wall of the outer sheath 1, and a plurality of water-swellable water-stop strips 5 are respectively located in the spaces between the plurality of fins 8. The inner ring 6, the outer ring 7 and the fins 8 can further support the cable, and the outer ring 7 is flush with the outer wall of the outer sheath 1, increasing the wear resistance of the outer sheath 1. At the same time, the inner ring 6, the outer ring 7 and the fins 8 can also conduct heat inside the cable, increasing the heat dissipation effect of the cable. Embodiment

[0027] Referring to Figures 1 - 4 , on the basis of Embodiment 1, a cross-linked extruded power cable is improved.

[0028] In the present utility model, the wire 2 includes a conductor 9. A conductor shielding layer 10 is disposed around the circumference of the conductor 9. An insulating layer 11 is disposed on the outer wall of the conductor shielding layer 10. An insulating shielding layer 12 is disposed on the outer wall of the insulating layer 11. A metal shielding layer 13 is disposed on the outer wall of the insulating shielding layer 12. The insulating layer 11 and the insulating shielding layer 12 are used to achieve an insulating effect, and the metal shielding layer 13 is mainly used to shield electromagnetic waves.

[0029] In particular, a filling cord 14 is disposed between the wire 2 and the tape 3. The main function of the filling cord 14 is to keep the cable round and improve the roundness of the finished cable.

[0030] It should be noted that the inner ring 6, the outer ring 7, and the fins 8 are made of alumina ceramics.

[0031] In particular, the conductor shielding layer 10 and the insulating shielding layer 12 are both made of polyethylene material, the insulating layer 11 is made of polyvinyl chloride material, and the metal shielding layer 13 is made of aluminum.

[0032] It should be noted that the outer sheath 1 is made of polyurethane material.

[0033] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A cross-linked extruded power cable, comprising a plurality of conductors (2), characterized in that: A wrapping tape (3) is provided between the plurality of conductors (2); the outer wall of the wrapping tape (3) is provided with a steel belt armor (4); the outer wall of the steel belt armor (4) is provided with a plurality of strip-shaped water-swellable water-stopping strips (5); and an outer protective layer (1) is provided between the outer walls of the water-swellable water-stopping strips (5); A plurality of support components, each of which is arranged between the steel belt armor (4) and the outer sheath (1) for supporting the cable; The support assembly comprises an inner ring (6) and an outer ring (7), a plurality of fins (8) are arranged between the inner ring (6) and the outer ring (7), the inner ring (6) is sleeved on the outer wall of the steel belt armor (4), the outer ring (7) is located inside the outer protective layer (1) and the outer wall is flush with the outer wall of the outer protective layer (1), and the plurality of water-swellable waterstop strips (5) are respectively located in the space between the plurality of fins (8).

2. A cross-linked extruded power cable according to claim 1, characterized in that: The wire (2) comprises a conductor (9), a conductor shielding layer (10) is arranged on the circumference of the conductor (9), an insulating layer (11) is arranged on the outer wall of the conductor shielding layer (10), an insulating shielding layer (12) is arranged on the outer wall of the insulating layer (11), and a metal shielding layer (13) is arranged on the outer wall of the insulating shielding layer (12).

3. A cross-linked extruded power cable according to claim 2, characterized in that: A filling rope (14) is provided between the conductive wire (2) and the wrapping tape (3).

4. A cross-linked extruded power cable according to claim 1, characterized in that: The inner ring (6), the outer ring (7) and the fins (8) are made of alumina ceramics.

5. A cross-linked extruded power cable according to claim 2, characterized in that: The conductor shielding layer (10) and the insulating shielding layer (12) are both made of polyethylene material, the insulating layer (11) is made of polyvinyl chloride material, and the metal shielding layer (13) is made of aluminum.

6. A cross-linked extruded power cable according to claim 2, characterized in that: The outer protective layer (1) is made of polyurethane material.

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