ABC overhead binding cable structure

Abstract

The utility model discloses an ABC overhead bundled cable structure, which relates to the technical field of overhead bundled cables, solves the problem of unsatisfactory insulation performance of the overhead bundled cable, and comprises a protective sleeve, cable cores are uniformly arranged in an inner cavity of the protective sleeve, a first protective layer is arranged on the outer surface of each cable core, and a second protective layer is arranged on the outer surface of the protective sleeve. The first protective layer comprises an inner insulating layer, a protective skin, a heat-resistant layer and a flame-retardant layer, the overhead binding cable is jointly constructed by arranging the protective sleeve, the cable core, the first protective layer and the second protective layer, and the first protective layer can protect the surface of the cable core, so that the insulating, heat-resistant and flame-retardant properties of the outer surface of the cable core are improved; and the second protection layer can protect the outer surface of the first protection layer, so that the first protection layer can be protected, the insulation performance of the cable core can be further improved, multiple insulation protection can be performed on the cable, the insulation performance is high, and the cable is safe to use.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead bundled cables, in particular to an ABC overhead bundled cable structure. Background Art

[0002] ABC overhead bundled cables, that is, overhead bundled cables, ABC is the abbreviation of Aerial Bunch cable. ABC overhead bundled cables are mainly widely used in underdeveloped areas abroad and less used in China. Although the currently used ABC overhead bundled cables can meet the usage requirements, there are still defects in the actual use process. For example, the insulation performance of some currently used ABC overhead bundled cables is not ideal. Since ABC overhead bundled cables are mostly used in a bundled manner with multiple cables, it is easy to cause mutual leakage between the cables, resulting in a short circuit of the line, and improvement is needed. Therefore, an ABC overhead bundled cable structure is now proposed. Summary of the Utility Model

[0003] In order to improve the problem of unsatisfactory insulation performance of overhead bundled cables, the utility model provides an ABC overhead bundled cable structure.

[0004] The utility model provides an ABC overhead bundled cable structure, adopting the following technical scheme:

[0005] An ABC overhead bundled cable structure includes a protective sleeve. The inner cavity of the protective sleeve is evenly provided with cable cores. A first protective layer is arranged on the outer surface of the cable cores, and a second protective layer is arranged on the outer surface of the protective sleeve;

[0006] The first protective layer includes an inner insulating layer, a protective skin, a heat-resistant layer and a flame-retardant layer;

[0007] The second protective layer includes an outer insulating layer and a wear-resistant layer.

[0008] Optionally, a reinforcing core is arranged in the inner cavity of the protective sleeve, and the outer surface of the reinforcing core is in contact with the outer surface of the first protective layer.

[0009] Optionally, a shielding layer is arranged on the outer surface of the first protective layer, and a semi-conductive layer is arranged in the inner cavity of the protective sleeve and on the outer side of the shielding layer.

[0010] Optionally, the inner insulating layer is arranged on the inner surface of the protective skin, the heat-resistant layer is arranged on the outer surface of the protective skin, and the flame-retardant layer is arranged on the outer surface of the heat-resistant layer.

[0011] Optionally, the outer insulating layer is arranged on the outer surface of the protective sleeve, and the wear-resistant layer is arranged on the outer surface of the outer insulating layer.

[0012] Optionally, the inner insulation layer is a mica insulation layer, the heat-resistant layer is a polybutylene succinate film layer, and the flame-retardant layer is a flame-retardant fiber layer.

[0013] Optionally, the outer insulation layer is an insulating rubber layer, and the wear-resistant layer is a polyamide layer.

[0014] In summary, the present utility model has the following beneficial effects:

[0015] The present utility model constructs an overhead bundled cable by providing a protective sleeve, a cable core, a first protective layer, and a second protective layer. Among them, the first protective layer can protect the surface of the cable core, improving the insulation, heat resistance, and flame-retardant properties of the outer surface of the cable core. The second protective layer can protect the outer surface of the first protective layer, not only protecting the first protective layer but also further improving the insulation performance of the cable core. This method can provide multiple insulation protections for the cable, with high insulation performance and safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a cross-sectional view of the structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the structure of the first protective layer of the present utility model;

[0019] Figure 4 is the structure of the present utility model Figure 2 is a partial enlarged view of part A in the figure.

[0020] In the figure: 1, protective sleeve; 2, cable core; 3, first protective layer; 301, inner insulation layer; 302, protective skin; 303, heat-resistant layer; 304, flame-retardant layer; 4, second protective layer; 401, outer insulation layer; 402, wear-resistant layer; 5, strengthening core; 6, shielding layer; 7, semi-conductive layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment:

[0023] Please refer to Figures 1-4, a kind of ABC aerial bundled cable structure, including a protective sleeve 1. The inner cavity of the protective sleeve 1 is evenly provided with cable cores 2. The outer surface of the cable core 2 is provided with a first protective layer 3, and the outer surface of the protective sleeve 1 is provided with a second protective layer 4;

[0024] The first protective layer 3 includes an inner insulating layer 301, a protective skin 302, a heat-resistant layer 303 and a flame-retardant layer 304. The protective skin 302 is made of polyvinyl chloride;

[0025] The second protective layer 4 includes an outer insulating layer 401 and a wear-resistant layer 402.

[0026] In this embodiment: By setting the protective sleeve 1, the cable core 2, the first protective layer 3 and the second protective layer 4, an aerial bundled cable is constructed. Among them, the first protective layer 3 can protect the surface of the cable core 2 and improve the insulation, heat resistance and flame-retardant performance of the outer surface of the cable core 2. And the second protective layer 4 can protect the outer surface of the first protective layer 3, which can not only protect the first protective layer 3, but also further improve the insulation performance of the cable core 2. This method can provide multiple insulation protections for the cable, with high insulation performance and safe use.

[0027] As a technical optimization scheme of the present utility model, further, a reinforcing core 5 is provided in the inner cavity of the protective sleeve 1, and the outer surface of the reinforcing core 5 is in contact with the outer surface of the first protective layer 3.

[0028] In this embodiment: By setting the reinforcing core 5, the cable core 2 and the first protective layer 3 can be limited.

[0029] As a technical optimization scheme of the present utility model, further, a shielding layer 6 is provided on the outer surface of the first protective layer 3. The shielding layer 6 is woven with silver-plated copper wires, and the weaving density of the shielding layer 6 is not less than 90%. A semi-conductive layer 7 is provided in the inner cavity of the protective sleeve 1 and outside the shielding layer 6.

[0030] In this embodiment: By setting the shielding layer 6, the magnetic field generated during the operation of the cable can be shielded, and at the same time, the external radiation can also be shielded to avoid the change of the molecular structure inside the cable. By setting the semi-conductive layer 7, the air gaps inside the cable can be eliminated and the tightness inside the cable can be improved.

[0031] As a technical optimization scheme of the present utility model, further, the inner insulating layer 301 is provided on the inner surface of the protective skin 302, the heat-resistant layer 303 is provided on the outer surface of the protective skin 302, and the flame-retardant layer 304 is provided on the outer surface of the heat-resistant layer 303.

[0032] As a technical optimization scheme of the present utility model, further, the outer insulating layer 401 is provided on the outer surface of the protective sleeve 1, and the wear-resistant layer 402 is provided on the outer surface of the outer insulating layer 401.

[0033] As a technical optimization solution of the present utility model, further, the inner insulation layer 301 is a mica insulation layer. The mica insulation layer has good insulation and heat resistance, as well as acid and alkali resistance, compressive resistance, and exfoliation resistance. It is mainly used as an insulation material for electrical equipment and electrical appliances. The heat-resistant layer 303 is a polybutylene succinate film layer. Polybutylene succinate has excellent mechanical properties and good heat resistance. The flame-retardant layer 304 is a flame-retardant fiber layer. Flame-retardant fibers do not catch fire themselves and will self-extinguish from smoldering when removed from the flame. They are widely used in clothing, home furnishings, decoration, non-woven fabrics, and fillers, etc.

[0034] As a technical optimization solution of the present utility model, further, the outer insulation layer 401 is an insulating rubber layer. Insulating rubber has good elasticity, high strength, and good comprehensive performance, and has excellent insulation. The wear-resistant layer 402 is a polyamide layer. Polyamide has good heat resistance and wear resistance.

[0035] The implementation principle of the present utility model is as follows: When in use, the overhead bundled cable is jointly constructed by the protective sleeve 1, the cable core 2, the first protective layer 3, and the second protective layer 4. The first protective layer 3 can protect the surface of the cable core 2. Among them, the inner insulation layer 301 can improve the insulation performance of the surface of the cable core 2, and the heat-resistant layer 303 can improve the overall heat resistance of the second protective layer 4 to avoid damage due to excessive temperature of the cable core 2. The flame-retardant layer 304 can improve the flame-retardant performance of the second protective layer 4 to prevent spontaneous combustion. Through the second protective layer 4, it can protect the outer surfaces of the first protective layer 3 and the cable core 2. Among them, the outer insulation layer 401 can further improve the insulation performance of the cable core 2, and the wear-resistant layer 402 can improve the overall wear resistance of the cable to avoid mutual friction damage between cables and improve the service life of the cable. This method can provide multiple insulation protections for the cable, with high insulation performance and safe use.

[0036] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An ABC overhead bundled cable structure, comprising a protective sheath (1), characterized in that: The inner cavity of the protective sleeve (1) is evenly provided with a cable core (2). The outer surface of the cable core (2) is provided with a first protective layer (3), and the outer surface of the protective sleeve (1) is provided with a second protective layer (4). The first protective layer (3) includes an inner insulating layer (301), a protective skin (302), a heat-resistant layer (303), and a flame-retardant layer (304). The second protective layer (4) includes an outer insulating layer (401) and a wear-resistant layer (402).

2. The structure of an ABC aerial bundled cable according to claim 1, wherein: A strengthening core (5) is arranged in the inner cavity of the protective sleeve (1), and the outer surface of the strengthening core (5) is in contact with the outer surface of the first protective layer (3).

3. The structure of an ABC aerial bundled cable according to claim 1, characterized in that: A shielding layer (6) is arranged on the outer surface of the first protective layer (3), and a semiconductive layer (7) is arranged in the inner cavity of the protective sleeve (1) and on the outer side of the shielding layer (6).

4. The ABC aerial bundled cable structure according to claim 1, characterized in that: The inner insulating layer (301) is arranged on the inner surface of the protective skin (302), the heat-resistant layer (303) is arranged on the outer surface of the protective skin (302), and the flame-retardant layer (304) is arranged on the outer surface of the heat-resistant layer (303).

5. The ABC aerial bundled cable structure according to claim 1, characterized in that: The outer insulating layer (401) is arranged on the outer surface of the protective sleeve (1), and the wear-resistant layer (402) is arranged on the outer surface of the outer insulating layer (401).

6. The ABC overhead bundled cable structure according to claim 1, characterized in that: The inner insulating layer (301) is a mica insulating layer, the heat-resistant layer (303) is a polybutylene succinate film layer, and the flame-retardant layer (304) is a flame-retardant fiber layer.

7. The structure of an ABC aerial bundled cable according to claim 1, characterized in that: The outer insulating layer (401) is an insulating rubber layer, and the wear-resistant layer (402) is a polyamide layer.

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