Cable with excellent weather resistance

Abstract

A cable with excellent weather resistance belongs to the technical field of cables and comprises a conductive component, a sheath component is arranged on the outer wall of the conductive component and comprises an outer layer, a microcapsule type self-repairing coating, a first inner layer and a second inner layer, and the outer layer, the microcapsule type self-repairing coating, the first inner layer and the second inner layer are sequentially arranged from outside to inside. The microcapsule type self-repairing coating contains microcapsules, and the microcapsules of the microcapsule type self-repairing coating are filled with a repairing agent. According to the utility model, the microcapsule type self-repairing coating is arranged, the microcapsule type self-repairing coating contains a large number of microcapsules, the microcapsules are filled with the repairing agent, and the repairing agent is subjected to chemical reaction at the damaged part, fills the crack and is cured, so that the self-repairing function is realized; and the self-repairing effect of the microcapsule type self-repairing coating can be obtained when any part of the outer wall of the outer layer is broken, so that the first inner layer is protected, the cable can be protected in all directions, and the overall weather resistance of the cable is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and particularly relates to a cable with excellent weather resistance. Background Art

[0002] A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a wire for transmitting electricity or information from one place to another. The wear resistance, waterproofness, and corrosion resistance of the cable are collectively referred to as weather resistance.

[0003] In the related art (publication number: CN211719284U), a wind energy cable with excellent weather resistance is disclosed, including an insulating sheath. A chamber is opened inside the insulating sheath. A fixing rod is embedded and installed at the central position inside the chamber. Inner notches are equidistantly opened at the outer end of the fixing rod. Outer notches are equidistantly opened at the position of the inner wall of the chamber corresponding to the inner notches. Insulating layers are equidistantly embedded and installed at the middle positions of the outer notches and the inner notches inside the chamber. The structure of the utility model is scientific and reasonable, and it is safe and convenient to use. It is provided with an insulating sheath, a chamber, a fixing rod, inner notches, outer notches, insulating layers, a conductor, and through holes. The conductor is fixed inside the chamber through the insulating layer, and the stability of the conductor is increased through the cooperation of the inner notches and the outer notches, avoiding the conductors from being intertwined. At the same time, the conductor is further fixed through the fixing rod. In addition, through the through holes, the thickness of the fixing rod is reduced, and the flexibility of the fixing rod is strengthened, thereby ensuring the bending property of the whole cable.

[0004] In practical applications, the overall weather resistance of the existing cable is poor. During use, after the cable is scratched, worn by external forces, and eroded by environmental factors, it will cause minor damage to the cable sheath. However, the existing cable sheath lacks a self-repairing function, resulting in the gradual expansion of the damage at the sheath over time. Although the inside of the cable is not damaged, the damage to the outer sheath still causes the whole cable to be unable to be put into use, increasing the scrap rate of the cable and wasting the conductor material inside the cable. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art that the overall weather resistance of the existing cable is poor and it lacks a self-repairing function, resulting in the gradual expansion of the damage at the sheath over time. Although the inside of the cable is not damaged, the damage to the outer sheath still causes the whole cable to be unable to be put into use, increasing the scrap rate of the cable and wasting the conductor material inside the cable, etc., the utility model provides a cable with excellent weather resistance. By setting a microcapsule-type self-repairing coating, the microcapsule-type self-repairing coating contains a large number of microcapsules, and a repair agent is contained in the microcapsules. When a minor damage appears on the outer surface, which causes the microcapsule-type self-repairing coating to be extruded and deformed and cracked, the repair agent is released. The repair agent undergoes a chemical reaction at the damaged part, fills the crack and solidifies, realizing the self-repairing function, and any part of the outer wall of the outer layer can be self-repaired by the microcapsule-type self-repairing coating. The specific technical solution is as follows:

[0006] A highly weather-resistant cable includes a conductive component, and a sheath component is provided on the outer wall of the conductive component. The sheath component includes an outer layer, a microcapsule-type self-healing coating, a first inner layer, and a second inner layer, and the outer layer, the microcapsule-type self-healing coating, the first inner layer, and the second inner layer are arranged in sequence from outside to inside. The microcapsule-type self-healing coating contains microcapsules, and a repair agent is contained in the microcapsules of the microcapsule-type self-healing coating;

[0007] Among them, the thickness ratio of the outer layer, the microcapsule-type self-healing coating, the first inner layer, and the second inner layer is 1.2 - 1.5:1:1:1.

[0008] In the above technical solution, the material of the microcapsule-type self-healing coating is set as epoxy resin.

[0009] In the above technical solution, the repair agent in the microcapsules of the microcapsule-type self-healing coating is set as liquid resin.

[0010] In the above technical solution, the repair agent in the microcapsules of the microcapsule-type self-healing coating is set as silicone rubber.

[0011] In the above technical solution, the repair agent in the microcapsules of the microcapsule-type self-healing coating is set as polyurea.

[0012] In the above technical solution, the repair agent in the microcapsules of the microcapsule-type self-healing coating is set as acrylate.

[0013] In the above technical solution, the conductive component includes an insulating sleeve and a strengthening core. The insulating sleeve wraps the outer wall of the strengthening core, and the conductor component is located at the central position of the sheath component.

[0014] In the above technical solution, four groups of control core wire assemblies are arranged in the second inner layer;

[0015] Each group of the control core wire assemblies includes five control core wires, and a third insulating layer, a second insulating layer, and a first insulating layer are sequentially wrapped outside the five control core wires.

[0016] In the above technical solution, the inner wall radian of the third insulating layer is respectively a first inner arc, a second inner arc, and a third inner arc.

[0017] In the above technical solution, the arc lengths of the first inner arc and the second inner arc are the same, and the arc length of the third inner arc is greater than the arc length of the first inner arc.

[0018] Compared with the prior art, the beneficial effects of a highly weather-resistant cable of the present utility model are:

[0019] 1. Regarding the problem that the overall weather resistance of existing cables is poor and there is a lack of self - repair function, which leads to the gradual expansion of damage at the sheath over time. Although the inside of the cable is not damaged, the damage to the outer sheath still causes the entire cable to be unusable, increasing the cable scrapping rate and wasting the conductor material inside the cable. The utility model solves this problem by setting a micro - capsule - type self - repair coating. The micro - capsule - type self - repair coating contains a large number of micro - capsules, and the micro - capsules are filled with a repair agent. When there are minor damages on the outer surface, which cause the micro - capsule - type self - repair coating to be extruded, deformed, and broken, the repair agent is released. The repair agent undergoes a chemical reaction at the damaged area, fills the cracks, and solidifies to achieve the self - repair function.

[0020] 2. In the utility model, the micro - capsule - type self - repair coating is evenly arranged circumferentially between the outer layer and the first inner layer, ensuring that any part of the outer wall of the outer layer can be self - repaired by the micro - capsule - type self - repair coating. Furthermore, it forms a protection for the first inner layer, can protect the cable comprehensively, and increases the overall weather resistance of the cable.

[0021] 3. Regarding the problem that the control wire cores inside traditional cables are usually insulated in a single - layer wrapping method, and the insulation layer is prone to rupture under the action of the control wire cores. In the utility model, a first insulation layer, a second insulation layer, and a third insulation layer are arranged outside the control wire cores, strengthening the overall strength of the insulation layer while better wrapping and protecting the control wire cores.

[0022] 4. In the utility model, the first insulation layer, the second insulation layer, and the third insulation layer are set with the same thickness, which can ensure the wrapping strength of the control wire cores while saving raw materials.

[0023] 5. Through the settings of the first inner arc, the second inner arc, and the third inner arc in the utility model, a uniform wrapping layer can be formed outside the five control wire cores, ensuring that each control wire core can fit against the inner wall of the third insulation layer, thereby ensuring the tightness of the wrapping of the control wire cores and avoiding the problem that it is difficult to ensure the complete wrapping of the control wire cores due to the gap between the control wire cores and the third insulation layer.

[0024] 6. In the utility model, the thickness ratio of the outer layer, the micro - capsule - type self - repair coating, the first inner layer, and the second inner layer is 1.2 - 1.5:1:1:1. At this ratio, the repair coverage rate of the micro - capsule - type self - repair coating for the outer layer and the first inner layer is optimal, ensuring that the outer layer and the first inner layer still have their original thickness after the micro - capsule - type self - repair coating is broken and repaired, and thus ensuring the integrity of the entire cable after self - repair.

[0025] In summary, the utility model is provided with a microcapsule-type self-healing coating. The microcapsule-type self-healing coating contains a large number of microcapsules, and the microcapsules are filled with a repair agent. When the outer layer surface has minor damage, which causes the microcapsule-type self-healing coating to be extruded, deformed, and ruptured, the repair agent is released. The repair agent undergoes a chemical reaction at the damaged area, fills the cracks, and solidifies, achieving the self-healing function. Moreover, any part of the outer wall that ruptures can receive the self-healing effect of the microcapsule-type self-healing coating, thereby protecting the first inner layer, being able to protect the cable comprehensively, increasing the overall weather resistance of the cable. Additionally, it can ensure that the outer layer and the first inner layer still have their original thickness after the microcapsule-type self-healing coating ruptures and is repaired, thus ensuring the integrity of the cable as a whole after self-healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a sectional view of the outer layer;

[0027] Figure 2 is Figure 1 an enlarged view of part A of

[0028] Figure 3 is a sectional view of the third inner arc;

[0029] Figures 1 to 3 In [figure number], 1. outer layer, 2. microcapsule-type self-healing coating, 3. first inner layer, 4. second inner layer, 5. filling layer, 6. first insulating layer, 7. second insulating layer, 8. third insulating layer, 9. control core wire, 10. insulating sleeve, 11. strengthening core, 12. first inner arc, 13. second inner arc, 14. third inner arc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further describes the present utility model in conjunction with specific implementation cases and attached Figures 1 to 3 drawings, but the present utility model is not limited to these embodiments.

[0031] Embodiment 1

[0032] Refer to Figures 1 to 3As shown, a highly weather-resistant cable includes a conductive component. The conductive component is a common component of existing cables and can achieve the transmission function of the cable. There is no need to limit and elaborate on the specific form of the conductive component here. A sheath component is provided on the outer wall of the conductive component, and the conductive component can be protected through the sheath component. The sheath component includes an outer layer 1, a microcapsule-type self-healing coating 2, a first inner layer 3, and a second inner layer 4. The outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 are arranged in sequence from outside to inside. The microcapsule-type self-healing coating 2 contains microcapsules, and the microcapsules in the microcapsule-type self-healing coating 2 are filled with a repair agent. The microcapsule-type self-healing coating 2 is circumferentially and uniformly arranged between the outer layer 1 and the first inner layer 3 to ensure that any part of the outer wall of the outer layer 1 can be self-healed by the microcapsule-type self-healing coating 2, thereby protecting the first inner layer 3 and providing comprehensive protection for the cable, increasing the overall weather resistance of the cable. Among them, the thickness ratio of the outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 is 1.2 - 1.5:1:1:1. In this embodiment, the thickness ratio of the outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 is 1.2:1:1:1. Through the above ratio, after the crushed microcapsule-type self-healing coating 2 is extruded and deformed and ruptured, the released repair agent can cover 108% of the rupture, and the integrity after self-healing is better.

[0033] Specifically, the material of the microcapsule-type self-healing coating 2 is set as epoxy resin. Epoxy resin has excellent insulation performance, chemical corrosion resistance, and mechanical strength, is suitable for the self-healing of cable sheaths, and has strong weather resistance as a repair agent, with good ultraviolet resistance, anti-aging, and high and low temperature resistance, and can adapt to the complex environment where the cable is located and maintain the repair effect for a long time.

[0034] The repair agent in the microcapsules of the microcapsule-type self-healing coating 2 is set as liquid resin. The liquid resin has a low viscosity and can easily flow into the tiny damages of the cable sheath, fully filling the cracks and voids to ensure the integrity of the repair.

[0035] The conductive component includes an insulating sleeve 10 and a strengthening core 11. The insulating sleeve 10 wraps around the outer wall of the strengthening core 11, and the conductor component is located at the center of the sheath component. The insulating sleeve 10 can protect the strengthening core and prevent the strengthening core from being corroded and mechanically damaged by the external environment. The strengthening core 11 can significantly improve the tensile strength of the cable and prevent the cable from breaking due to tension during laying and use. Especially in the case of long-distance laying, vertical laying, or occasions that need to bear large external forces, the steel wire rope strengthening core can ensure the structural stability and safety of the cable. At the same time, it also helps to fix the position of the strengthening core and ensure that the strengthening core can effectively play the role of enhancing the mechanical strength of the cable.

[0036] For main referenceFigure 1 As shown, there are four groups of control core wire assemblies arranged inside the second inner layer 4; each group of control core wire assemblies includes five control core wires 9, and the outer sides of the five control core wires 9 are successively wrapped with a third insulating layer 8, a second insulating layer 7, and a first insulating layer 6. By setting the same thickness of the first insulating layer 6, the second insulating layer 7, and the third insulating layer 8, it is possible to ensure the wrapping strength of the control core wires 9 while saving raw materials.

[0037] Mainly refer to Figure 3 As shown, the inner wall arcs of the third insulating layer 8 are respectively a first inner arc 12, a second inner arc 13, and a third inner arc 14. Through the settings of the first inner arc 12, the second inner arc 13, and the third inner arc 14, a uniform wrapping layer can be formed outside the five control core wires 9, ensuring that each control core wire 9 can fit against the inner side wall of the third insulating layer 8, thereby ensuring the tightness of the wrapping of the control core wires 9 and avoiding the difficulty in ensuring the completeness of the wrapping of the control core wires 9 due to the gap between the control core wires 9 and the third insulating layer 8.

[0038] Specifically, the arc lengths of the first inner arc 12 and the second inner arc 13 are the same, and the arc length of the third inner arc 14 is greater than the arc length of the first inner arc 12, so as to ensure that the three can form a complete wrapping layer on the outer wall of the control core wires 9, and the space inside the three is sufficient to accommodate the five control core wires 9.

[0039] It is worth noting that the control core wires 9, the insulating sleeve 10, and the strengthening core 11 in the present utility model are common components of existing cables. The control core wires 9 are mainly used to transmit control signals or low-current signals, and are connected to related control devices to monitor, control, and adjust the operating state of the cable. For example, they transmit the signals of temperature sensors, control the heating system of the cable, etc.; the insulating sleeve 10 can protect the strengthening core and prevent the strengthening core from being corroded and mechanically damaged by the external environment; the strengthening core 11 can significantly improve the tensile strength of the cable and prevent the cable from breaking due to the action of tensile force during laying and use. Especially in the cases of long-distance laying, vertical laying, or when the cable needs to bear large external forces, the steel wire rope strengthening core can ensure the structural stability and safety of the cable. At the same time, it also helps to fix the position of the strengthening core and ensure that the strengthening core can effectively play the role of enhancing the mechanical strength of the cable. There will be no excessive elaboration on the above existing components here.

[0040] In this utility model, by providing a microcapsule-type self-healing coating 2 which contains a large number of microcapsules inside, and the microcapsules are filled with a repair agent. When the outer layer 1 has minor damages on its surface, which causes the microcapsule-type self-healing coating 2 to be extruded, deformed and ruptured, the repair agent is released. The repair agent undergoes a chemical reaction at the damaged part, fills the cracks and solidifies, thus realizing the self-healing function. Moreover, any part of the outer wall of the outer layer 1 that is ruptured can be self-healed by the microcapsule-type self-healing coating 2, thereby protecting the first inner layer 3, being able to protect the cable in all directions, increasing the overall weather resistance of the cable. In addition, it can ensure that the outer layer 1 and the first inner layer 3 after the microcapsule-type self-healing coating 2 is ruptured and repaired still have the original thickness, thus ensuring the integrity of the cable as a whole after self-healing.

[0041] Example 2

[0042] The difference between this example and Example 1 is that the thickness ratio of the outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 is 1.3:1:1:1. Through the above ratio, after the microcapsule-type self-healing coating 2 is broken and extruded, deformed and ruptured, the released repair agent can cover 106% of the ruptured part, and the integrity after self-healing is relatively good.

[0043] The repair agent inside the microcapsules of the microcapsule-type self-healing coating 2 is set as silicone rubber. The silicone rubber can adapt to the bending, stretching and other deformations of the cable during use, ensuring that the repaired sheath still has good mechanical properties, and it has the characteristics of non-toxic and environmental protection, being harmless to the environment and the human body, meeting the requirements of modern environmental protection.

[0044] Example 3

[0045] The difference between this example and Example 1 is that the thickness ratio of the outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 is 1.4:1:1:1. Through the above ratio, after the microcapsule-type self-healing coating 2 is broken and extruded, deformed and ruptured, the released repair agent can cover 104% of the ruptured part, and the integrity after self-healing is normal.

[0046] The repair agent inside the microcapsules of the microcapsule-type self-healing coating 2 is set as polyurea. Polyurea has the characteristic of rapid curing and can be cured in an extremely short time, quickly completing the repair process.

[0047] Example 4

[0048] The difference between this embodiment and Embodiment 1 lies in that the thickness ratio of the outer layer 1, the microcapsule-type self-healing coating 2, the first inner layer 3, and the second inner layer 4 is 1.5:1:1:1. With the above ratio, after the microcapsule-type self-healing coating 2 is broken and squeezed and deformed, the released repair agent can cover 102% of the rupture, and the integrity is normal after self-healing.

[0049] The repair agent in the microcapsules of the microcapsule-type self-healing coating 2 is set as acrylate. Acrylate can be tightly combined with the surface of the cable sheath, is not easy to fall off, and the raw materials of acrylate are easy to obtain and are economical.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A weather-resistant cable, comprising a conductive component, characterized in that: The outer wall of the conductive component is provided with a sheath component, the sheath component comprises an outer layer (1), a microcapsule-type self-repairing coating (2), a first inner layer (3), and a second inner layer (4), and the outer layer (1), the microcapsule-type self-repairing coating (2), the first inner layer (3), and the second inner layer (4) are arranged in sequence from the outside to the inside, the microcapsule-type self-repairing coating (2) contains microcapsules, and the microcapsules of the microcapsule-type self-repairing coating (2) contain a repair agent; The thickness ratio of the outer layer (1), the microcapsule-type self-healing coating (2), the first inner layer (3), and the second inner layer (4) is 1.2 to 1.5:1:1:

1.

2. The weather-resistant cable according to claim 1, characterized in that: The material of the microcapsule-type self-repairing coating (2) is set to be epoxy resin.

3. A weather-resistant cable according to claim 2, characterized in that: The repairing agent in the microcapsules of the microcapsule-type self-repairing coating (2) is configured as a liquid resin.

4. The weather-resistant cable according to claim 2, characterized in that: The repairing agent in the microcapsules of the microcapsule-type self-repairing coating (2) is configured as silicone rubber.

5. The weather-resistant cable according to claim 2, characterized in that: The repairing agent in the microcapsules of the microcapsule-type self-repairing coating (2) is set as polyurea.

6. The weather-resistant cable according to claim 2, characterized in that: The repairing agent in the microcapsules of the microcapsule-type self-repairing coating (2) is set as acrylate.

7. The weather-resistant cable according to claim 1, characterized in that: The conductive component comprises an insulating sleeve (10) and a reinforcing core (11), the insulating sleeve (10) is wrapped around the outer wall of the reinforcing core (11), and the conductive component is located at the center of the sheath component.

8. The high-weather-resistant cable according to claim 7, characterized in that: Four groups of control wire core components are arranged in the second inner layer (4); Each group of the control wire core components comprises five control wire cores (9), and the outer sides of the five control wire cores (9) are wrapped with a third insulation layer (8), a second insulation layer (7), and a first insulation layer (6) in sequence.

9. The weather-resistant cable according to claim 8, characterized in that: The inner wall curvatures of the third insulating layer (8) are respectively a first inner curvature (12), a second inner curvature (13), and a third inner curvature (14).

10. The high-weather-resistant cable according to claim 9, characterized in that: The first inner arc (12) and the second inner arc (13) have the same arc length, and the third inner arc (14) has a greater arc length than the first inner arc (12).

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