Shock-resistant and corrosion-resistant new energy cable

Abstract

The utility model discloses an anti-seismic corrosion-resistant new energy cable, which comprises a cable core, the cable core comprises a first wire core, a second wire core and a filling layer, the filling layer is arranged in a gap between the first wire core and the second wire core, a mica tape wrapping layer is arranged outside the cable core, and the mica tape wrapping layer is arranged between the first wire core and the second wire core. A mica tape wrapping layer is arranged outside the cable core, the mica tape wrapping layer is spirally wound and connected outside the cable core, an inner sheath is arranged outside the mica tape wrapping layer, extrusion molding is performed between the inner sheath and the mica tape wrapping layer, a composite anti-seismic layer is arranged outside the inner sheath, an armor layer is arranged outside the composite anti-seismic layer, and the armor layer is attached to the composite anti-seismic layer. The outer sheath is arranged outside the armor layer, the outer sheath and the armor layer are formed through extrusion, the anti-seismic layer of the new energy cable is of a double-layer structure, the air clamping cavity is formed in the anti-seismic layer, vibration energy is repeatedly absorbed through the two buffer layers, the anti-seismic performance of the new energy cable is improved, and the use effect of the cable is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy cables, in particular to a new energy cable that is earthquake-resistant and corrosion-resistant. Background Art

[0002] With the rapid development of the new energy industry, the new energy cable industry has also ushered in new development opportunities. New energy cables refer to power cables used to transmit renewable energy such as solar energy, wind energy, and hydropower. They are power cables designed specifically for transmitting new energy. They can adapt to various environmental conditions and have the characteristics of high efficiency, environmental protection, and reliability. They have the advantages of high efficiency, environmental protection, and reliability, and have become an important choice for future energy transmission.

[0003] The Chinese patent publication number is CN215342053U, and the authorization announcement date is December 18, 2021. It is an earthquake-resistant cable, including a cable core formed by twisting a plurality of cores, wherein the gaps between the plurality of cores are filled with an earthquake-resistant layer; a buffer layer is provided on the outside of the cable core, a metal rubber layer is provided on the outside of the buffer layer, and a cable sheath is provided on the outside of the metal rubber layer. The utility model has a reasonable design, utilizing the elasticity of the metal rubber layer in conjunction with the buffer layer to reduce the impact of external vibration on the cable core and improve the earthquake resistance; at the same time, an earthquake-resistant layer is provided between the cores, so that the plurality of cores form an integral structure, so that the cable as a whole is subjected to force when subjected to vibration, reducing the impact of vibration on the cable.

[0004] The seismic resistance of existing new energy cables is insufficient. When subjected to relatively large vibration forces for a long time, the cable's protective sheath is easily torn and the conductor is damaged, which greatly shortens the cable's life and causes the cable to short-circuit or break, resulting in major casualties and equipment accidents. The cable may even have exposed cores, leading to electric shock accidents, and cannot meet usage requirements. Utility Model Content

[0005] The purpose of the present utility model is to provide a new energy cable that is earthquake-resistant and corrosion-resistant, so as to solve the problem that the existing new energy cables have insufficient earthquake resistance as mentioned in the above background technology. When subjected to relatively large vibration forces for a long time, the protective sheath of the cable is easily torn and the conductor is damaged, which greatly shortens the life of the cable, causing the cable to short-circuit or break, resulting in major casualties of personnel and equipment, and even the cable core may be exposed, leading to electric shock accidents, and cannot meet the use requirements.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A new energy cable with earthquake resistance and corrosion resistance, comprising a cable core, the cable core includes a first core wire, a second core wire and a filling layer, and the filling layer is arranged at the gap between the first core wire and the second core wire. An external mica tape wrapping layer is provided outside the cable core, and the mica tape wrapping layer is spirally wound and connected outside the cable core. An inner sheath is provided outside the mica tape wrapping layer, and the inner sheath and the mica tape wrapping layer are formed by extrusion. An external composite earthquake-resistant layer is provided outside the inner sheath, an armor layer is provided outside the composite earthquake-resistant layer, and the armor layer is fitted with the composite earthquake-resistant layer. An outer sheath is provided outside the armor layer, and the outer sheath and the armor layer are formed by extrusion coating.

[0007] Preferably, both the first core wire and the second core wire include a conductor, a shielding layer and an insulating layer, and the conductor is formed by stranding a plurality of copper wires. The shielding layer is arranged outside the conductor, and the insulating layer is arranged outside the shielding layer, and the shielding layer and the insulating layer are successively extrusion-coated on the outside of the conductor.

[0008] Preferably, the inner sheath includes an oxygen isolation layer, a flame retardant layer and a fire resistant layer. The oxygen isolation layer is fitted with the mica tape wrapping layer, the flame retardant layer is arranged outside the oxygen isolation layer, and the fire resistant layer is arranged outside the flame retardant layer.

[0009] Preferably, the composite earthquake-resistant layer includes a first buffer layer and a second buffer layer. The first buffer layer is fitted with the inner sheath, the second buffer layer is arranged outside the first buffer layer, and an air sandwich cavity is arranged at the contact part between the first buffer layer and the second buffer layer. There are at least six air sandwich cavities, and the air sandwich cavities are equidistantly arranged outside the first buffer layer.

[0010] Preferably, a wear-resistant coating is coated on the outside of the outer sheath.

[0011] Preferably, aramid ropes are arranged inside the outer sheath. There are at least twelve aramid ropes, and the aramid ropes are circularly and equidistantly arranged inside the outer sheath.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] Through the setting of the composite earthquake-resistant layer, the composite earthquake-resistant layer is composed of a first buffer layer and a second buffer layer to form a double-layer structure. Both the first buffer layer and the second buffer layer are made of rubber. When the cable is vibrated, the vibration force is first transmitted to the second buffer layer, and the second buffer layer is extruded to generate deformation and absorb the vibration energy. When the external vibration energy is transmitted to the first buffer layer, the energy is absorbed again. In this way, the external energy is absorbed twice and greatly attenuated. When the vibration force is transmitted to the air sandwich cavity area, the air sandwich cavity absorbs the vibration energy again, reducing the influence of external vibration on the cable core and improving the earthquake resistance performance;

[0014] Through the settings of the outer sheath and the wear-resistant coating, the outer sheath of this utility model device is supported by polyethylene and irradiated and crosslinked. Irradiation crosslinking uses ionizing radiation to irradiate polyethylene, forming chemical bonds or strong physical bonding points between its macromolecular chains, thereby generating a three-dimensional network structure polymer with a higher molecular weight and improving the wear resistance of polyethylene. The wear-resistant coating uses a polyurethane coating, which has excellent wear resistance, oil resistance and aging resistance, and improves the service life of new energy cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 is a cross-sectional view of this utility model;

[0017] Figure 3 is of this utility model Figure 2 partial enlarged view of Area A;

[0018] Figure 4 is a structural diagram of the composite seismic resistance layer of this utility model;

[0019] Figure 5 is a structural diagram of the outer sheath of this utility model;

[0020] Figure 6 is a cross-sectional view of the inner sheath of this utility model.

[0021] In the figure: 1. Cable core; 2. First core; 3. Second core; 4. Filling layer; 5. Mica tape wrapping layer; 6. Inner sheath; 7. Composite seismic resistance layer; 8. Armor layer; 9. Outer sheath; 10. Air cavity; 11. Conductor; 12. Shielding layer; 13. Insulation layer; 14. Aramid rope; 15. Wear-resistant coating; 16. First buffer layer; 17. Second buffer layer; 18. Oxygen isolation layer; 19. Flame retardant layer; 20. Fire resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments.

[0023] Please refer to Figures 1-6, An embodiment provided by the present utility model: A new energy cable with earthquake resistance and corrosion resistance, comprising a cable core 1. The cable core 1 includes a first wire core 2, a second wire core 3 and a filling layer 4, and the filling layer 4 is arranged at the gap between the first wire core 2 and the second wire core 3. An external mica tape wrapping layer 5 is arranged outside the cable core 1, and the mica tape wrapping layer 5 is spirally wound and connected outside the cable core 1. An inner sheath 6 is arranged outside the mica tape wrapping layer 5, and the inner sheath 6 and the mica tape wrapping layer 5 are formed by extrusion. An external composite earthquake-resistant layer 7 is arranged outside the inner sheath 6, and an armor layer 8 is arranged outside the composite earthquake-resistant layer 7, and the armor layer 8 is attached to the composite earthquake-resistant layer 7. An outer sheath 9 is arranged outside the armor layer 8, and the outer sheath 9 and the armor layer 8 are formed by extrusion. Both the first wire core 2 and the second wire core 3 include a conductor 11, a shielding layer 12 and an insulating layer 13, and the conductor 11 is formed by stranding a plurality of copper wires. The shielding layer 12 is arranged outside the conductor 11, and the insulating layer 13 is arranged outside the shielding layer 12, and the shielding layer 12 and the insulating layer 13 are successively extruded outside the conductor 11. The outer sheath 9 is supported by polyethylene and subjected to irradiation cross-linking treatment. Irradiation cross-linking is to irradiate polyethylene with ionizing radiation to form chemical bonds or strong physical bonding points between its macromolecular chains, thereby generating a three-dimensional network structure polymer with a higher molecular weight and improving the wear resistance of polyethylene. The composite earthquake-resistant layer 7 deforms when the cable is subjected to external force, absorbs vibration energy, and plays a shock-absorbing function.

[0024] Please refer to Figure 1 and Figure 6 , The inner sheath 6 includes an oxygen isolation layer 18, a flame retardant layer 19 and a fire resistant layer 20. The oxygen isolation layer 18 is attached to the mica tape wrapping layer 5. The flame retardant layer 19 is arranged outside the oxygen isolation layer 18, and the fire resistant layer 20 is arranged outside the flame retardant layer 19.

[0025] Please refer to Figure 1 , Figure 3 and Figure 4 , The composite earthquake-resistant layer 7 includes a first buffer layer 16 and a second buffer layer 17. The first buffer layer 16 is attached to the inner sheath 6, and the second buffer layer 17 is arranged outside the first buffer layer 16. An air sandwich cavity 10 is arranged at the contact between the first buffer layer 16 and the second buffer layer 17. There are at least six air sandwich cavities 10, and the air sandwich cavities 10 are equidistantly arranged outside the first buffer layer 16. Both the first buffer layer 16 and the second buffer layer 17 are made of rubber. The composite earthquake-resistant layer 7 is arranged in a double-layer structure. When the cable is vibrated, the vibration force is first transmitted to the second buffer layer 17, and the second buffer layer 17 is extruded and deformed to absorb vibration energy. When the external vibration energy is transmitted to the first buffer layer 16, the energy is absorbed again. In this way, the external energy is greatly attenuated after being absorbed twice. When the vibration force is transmitted to the area of the air sandwich cavity 10, the air sandwich cavity 10 absorbs the vibration energy again, reducing the influence of external vibration on the cable core and improving the earthquake resistance performance.

[0026] Please refer to Figure 1 and Figure 5 , the outer sheath 9 is coated with a wear-resistant coating 15 on the outside, and an aramid rope 14 is provided inside the outer sheath 9. There are at least twelve aramid ropes 14, and the aramid ropes 14 are arranged equidistantly in a circular shape inside the outer sheath 9. The wear-resistant coating 15 is a polyurethane coating, and the polyurethane coating has excellent wear resistance, oil resistance and aging resistance. The aramid rope 14 has extremely high strength, and it bears the forces of the cable from the transverse and longitudinal directions, protecting the cable conductor and rubber from damage.

[0027] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy cable with earthquake resistance and corrosion resistance, comprising a cable core (1), characterized in that: The cable core (1) includes a first core (2), a second core (3) and a filling layer (4), and the filling layer (4) is arranged at the gap between the first core (2) and the second core (3). An external mica tape wrapping layer (5) is provided on the outside of the cable core (1), and the mica tape wrapping layer (5) is spirally wound and connected on the outside of the cable core (1). An inner sheath (6) is provided on the outside of the mica tape wrapping layer (5), and the inner sheath (6) and the mica tape wrapping layer (5) are formed by extrusion. A composite anti-seismic layer (7) is provided on the outside of the inner sheath (6), an armor layer (8) is provided on the outside of the composite anti-seismic layer (7), and the armor layer (8) is in contact with the composite anti-seismic layer (7). An outer sheath (9) is provided on the outside of the armor layer (8), and the outer sheath (9) and the armor layer (8) are formed by extrusion coating.

2. The new energy cable with earthquake resistance and corrosion resistance according to claim 1, characterized in that: Both the first core (2) and the second core (3) include a conductor (11), a shielding layer (12) and an insulating layer (13), and the conductor (11) is formed by stranding a plurality of copper wires. The shielding layer (12) is arranged on the outside of the conductor (11), the insulating layer (13) is arranged on the outside of the shielding layer (12), and the shielding layer (12) and the insulating layer (13) are sequentially extrusion-coated on the outside of the conductor (11).

3. The new energy cable with earthquake resistance and corrosion resistance according to claim 1, characterized in that: The inner sheath (6) includes an oxygen isolation layer (18), a flame retardant layer (19) and a fire resistant layer (20). The oxygen isolation layer (18) is in contact with the mica tape wrapping layer (5), the flame retardant layer (19) is arranged on the outside of the oxygen isolation layer (18), and the fire resistant layer (20) is arranged on the outside of the flame retardant layer (19).

4. An anti-seismic and corrosion-resistant new energy cable according to claim 1, characterized in that: The composite anti-seismic layer (7) includes a first buffer layer (16) and a second buffer layer (17). The first buffer layer (16) is in contact with the inner sheath (6), the second buffer layer (17) is arranged on the outside of the first buffer layer (16), and an air sandwich cavity (10) is arranged at the contact position between the first buffer layer (16) and the second buffer layer (17). There are at least six air sandwich cavities (10), and the air sandwich cavities (10) are equidistantly arranged on the outside of the first buffer layer (16).

5. The new energy cable with earthquake resistance and corrosion resistance according to claim 1, characterized in that: A wear-resistant coating (15) is coated on the outside of the outer sheath (9).

6. The new energy cable with earthquake resistance and corrosion resistance according to claim 1, characterized in that: Aramid ropes (14) are arranged inside the outer sheath (9). There are at least twelve aramid ropes (14), and the aramid ropes (14) are circularly and equidistantly arranged inside the outer sheath (9).

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