Waterproof aluminum alloy core cable

Abstract

The utility model discloses a waterproof aluminum alloy core cable, which relates to the technical field of variable frequency cables and sequentially comprises an outer protective layer, a steel tape armoring layer, a curing layer, an expansion layer and a buffer layer from outside to inside, a compression-resistant strip is sleeved in the buffer layer, and a plurality of groups of filling cavities are formed between the compression-resistant strip and the buffer layer. A plurality of groups of filling cavities are formed in the compression-resistant strip, a main wire insulated wire is arranged in each group of filling cavity, a plurality of groups of cavities are formed in the compression-resistant strip, a zero wire insulated wire is arranged in each group of cavities, and each main wire insulated wire sequentially comprises a main wire core, a main wire insulating layer and a main wire metal shielding layer from inside to outside. The zero line insulation wire sequentially comprises a zero line core, a zero line insulation layer and a zero line metal shielding layer from inside to outside, the space between the cavity and the zero line insulation wire and the space between the filling cavities and the main line insulation wire are filled with filler, and the multiple sets of filling cavities are circumferentially and evenly distributed with the circle center of the compression-resistant strip as the center. The device has the characteristic of improving the waterproofness of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion cables, in particular to a waterproof aluminum alloy core cable. Background Technique

[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. Usually, it is a cable similar to a rope formed by stranding several main wire conductors and several neutral wire conductors. Each group of conductors is insulated from each other and is often twisted around a center, and the whole is wrapped with a highly insulating covering layer.

[0003] A compression-resistant and waterproof cable with the publication number of CN207441305U includes: an outer protective layer, a waterproof grease layer, a waterproof tape wrapping layer, three aluminum alloy conductors and a neoprene tube arranged from outside to inside. Each of the aluminum alloy conductors includes an aluminum alloy conductor, an insulating layer arranged outside the aluminum alloy conductor, and an aluminum alloy tape wrapping layer arranged outside the insulating layer. The three aluminum alloy conductors are arranged around the neoprene tube, and fillers are arranged between the neoprene tube, the aluminum alloy conductors and the waterproof tape wrapping layer;

[0004] Although this scheme can achieve a certain waterproof effect on the cable, it cannot play a good protective role for the wire core when the cable is bent. At the same time, the cable is easily broken and leaked when bent, and the wire core cannot be protected and repaired after the cable is broken, reducing the waterproof effect of the cable. There is a neoprene tube in the center, but the compression resistance is poor and the wire core cannot be effectively protected. This phenomenon has become a problem that needs to be solved urgently by those skilled in the art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a waterproof aluminum alloy core cable for the existing technical defects to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: A waterproof aluminum alloy core cable includes an outer protective layer, a steel tape armor layer, a curing layer, an expansion layer, and a buffer layer from outside to inside. A compression-resistant strip is sleeved inside the buffer layer;

[0007] Multiple filling cavities are formed between the compression-resistant strip and the buffer layer, and main line insulated wires are arranged in each filling cavity;

[0008] Multiple cavities are opened in the compression-resistant strip, and neutral line insulated wires are arranged in each cavity.

[0009] The utility model further explains that the main line insulated wire includes a main line core, a main line insulating layer, and a main line metal shielding layer from inside to outside in sequence.

[0010] The present utility model is further described as follows. The neutral wire insulating wire sequentially includes a neutral wire core, a neutral wire insulating layer, and a neutral wire metal shielding layer from the inside to the outside.

[0011] The present utility model is further described as follows. Fillers are filled between the cavity and the neutral wire insulating wire and between the filling cavity and the main wire insulating wire.

[0012] The present utility model is further described as follows. Multiple groups of the filling cavities are evenly distributed in a circle centered on the center of the compression bar.

[0013] The present utility model is further described as follows. Multiple groups of the cavities are evenly distributed in a circle centered on the center of the compression bar.

[0014] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: In the present utility model, by providing a steel tape armor layer, a buffer layer, and a compression bar, the compression resistance and torsion resistance of the cable are improved;

[0015] By providing a curing layer and an expansion layer, the cable breakage is repaired and protected;

[0016] By providing a compression bar to separate the main wire insulating wire and the neutral wire insulating wire, the damage range to the wire core caused by water intrusion is reduced, and at the same time, the damage degree to the cable caused by the breakage of a single main wire insulating wire and the neutral wire insulating wire is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the neutral wire insulating wire structure of the present utility model;

[0020] In the figure: 1. Outer protective layer; 2. Steel tape armor layer; 3. Curing layer; 4. Expansion layer; 5. Buffer layer; 6. Compression bar; 7. Filling cavity; 8. Main wire insulating wire; 9. Cavity; 10. Neutral wire insulating wire; 11. Main wire core; 12. Main wire insulating layer; 13. Main wire metal shielding layer; 14. Neutral wire core; 15. Neutral wire insulating layer; 16. Neutral wire metal shielding layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solution of the present utility model will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings in a non-limiting manner. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the protection scope of the present utility model.

[0022] Please refer to Figure 1-2 , the present utility model provides a technical solution: a waterproof aluminum alloy core cable, which includes an outer protective layer 1, a steel tape armor layer 2, a curing layer 3, an expansion layer 4, and a buffer layer 5.

[0023] A compression-resistant strip 6 is sleeved inside the buffer layer 5. The compression-resistant strip 6 is made of thermoplastic elastomer material, including but not limited to synthetic rubbers such as styrene-based, vinyl chloride-based, and urethane-based.

[0024] Three groups of filling cavities 7 are formed between the compression-resistant strip 6 and the buffer layer 5. The three groups of filling cavities 7 are distributed at 120° with the center of the compression-resistant strip 6 as the center. Each group of filling cavities 7 is provided with a group of main line insulated wires 8;

[0025] Three groups of cavities 9 are opened at the center of the compression-resistant strip 6. The three groups of cavities 9 are distributed at 120° with the center of the compression-resistant strip 6 as the center. Each group of cavities 9 is provided with a group of neutral line insulated wires 10.

[0026] The main line insulated wire 8 includes a main line core 11, a main line insulation layer 12, and a main line metal shielding layer 13. The main line metal shielding layer 13 is wrapped around the outer wall of the main line insulation layer 12, and the main line insulation layer 12 is wrapped around the outer wall of the main line core 11.

[0027] The neutral line insulated wire 10 includes a neutral line core 14, a neutral line insulation layer 15, and a neutral line metal shielding layer 16. The neutral line metal shielding layer 16 is wrapped around the outer wall of the neutral line insulation layer 15, and the neutral line insulation layer 15 is wrapped around the outer wall of the neutral line core 14.

[0028] Fillers are filled between the cavity 9 and the neutral line insulated wire 10 and between the filling cavity 7 and the main line insulated wire 8. The fillers include but are not limited to polyester tapes, tin foil tapes, aramid filaments, and glass fiber filaments.

[0029] Both the main line core 11 and the neutral line core 14 are aluminum alloy cores;

[0030] The outer protective layer 1 is wrapped around the outer wall of the steel tape armor layer 2. The outer protective layer 1 is made of insulating, fireproof, waterproof, and flame-retardant materials. The outer wall of the outer protective layer 1 can be used for anti-insect and anti-rat painting;

[0031] The steel tape armor layer 2 is wrapped around the outer wall of the curing layer 3. The steel tape armor layer 2 is composed of fine steel wire meshes, which is used to improve the tensile strength, compressive strength, and anti-interference ability of the cable;

[0032] The solidified layer 3 wraps around the outer wall of the expansion layer 4. The solidified layer 3 is a water-solidifying material, including but not limited to polysulfone, polyarylsulfone, polyethersulfone, etc.;

[0033] The expansion layer 4 wraps around the outer wall of the buffer layer 5. The buffer layer 5 can be made of an elastic foaming material;

[0034] The expansion layer 4 is a water-absorbing and expanding material, including but not limited to water-absorbing and expanding rubber, water-absorbing resin, polyethylene glycol components, etc.

[0035] In this embodiment, when the outer protective layer 1 and the steel tape armor layer 2 are damaged, the solidified layer 3 solidifies after encountering water, preventing water from continuing to enter the cable interior for damage;

[0036] When the solidified layer 3 cannot completely prevent water from infiltrating into the cable interior, after contacting the expansion layer 4, the expansion layer 4 will expand after absorbing water, thereby expanding and sealing the break, blocking the water outside the cable.

[0037] When the water further leaks into the buffer layer 5, the main line insulation layer 12 and the neutral line insulation layer 15 further isolate the water at the same time.

[0038] The main line insulated wire 8 and the neutral line insulated wire 10 are separated by the compression strip 6, reducing the influence range of the main line insulated wire 8 and the neutral line insulated wire 10 in this area after water leakage;

[0039] At the same time, it reduces the damage degree of the cable caused by the leakage of a single main line insulated wire 8 and the neutral line insulated wire 10;

[0040] When the compressive capacity of the steel tape armor layer 2 is insufficient to support the external extrusion force, the buffer layer 5 and the compression strip 6 can perform multi-stage buffering, thereby improving the anti-torsion and anti-compression capacity of the cable.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0042] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waterproof aluminum alloy core cable, characterized in that: It successively includes an outer protective layer (1), a steel tape armor layer (2), a curing layer (3), an expansion layer (4), and a buffer layer (5) from outside to inside. A compression bar (6) is sleeved inside the buffer layer (5). Multiple groups of filling cavities (7) are formed between the compression bar (6) and the buffer layer (5), and a main line insulated wire (8) is arranged in each group of filling cavities (7). Multiple groups of cavities (9) are formed in the compression bar (6), and a neutral wire insulated wire (10) is arranged in each group of cavities (9).

2. The waterproof aluminum alloy core cable according to claim 1, wherein: The main line insulated wire (8) successively includes a main line core (11), a main line insulation layer (12), and a main line metal shielding layer (13) from inside to outside.

3. A waterproof aluminum alloy core cable according to claim 1, characterized in that: The neutral wire insulated wire (10) successively includes a neutral wire core (14), a neutral wire insulation layer (15), and a neutral wire metal shielding layer (16) from inside to outside.

4. A waterproof aluminum alloy core cable according to claim 3, characterized in that: Fillers are filled between the cavity (9) and the neutral wire insulated wire (10) and between the filling cavity (7) and the main line insulated wire (8).

5. The waterproof aluminum alloy core cable according to claim 4, characterized in that: The multiple groups of filling cavities (7) are evenly distributed in a circle with the center of the compression bar (6) as the center.

6. The waterproof aluminum alloy core cable according to claim 5, characterized in that: The multiple groups of cavities (9) are evenly distributed in a circle with the center of the compression bar (6) as the center.

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