High-reliability steel-cored aluminum stranded conductor cable

Abstract

The utility model discloses a high-reliability steel-cored aluminum stranded conductor cable, which comprises a winding disc, a cable body is wound on the surface of the winding disc, the cable body comprises a steel core and a flame-retardant ethylene propylene rubber insulating layer, an aluminum core is wrapped on the surface of the steel core, a halogen-free flame-retardant belting layer is wrapped on the outer surface of the flame-retardant ethylene propylene rubber insulating layer, and the outer surface of the halogen-free flame-retardant belting layer is wrapped on the surface of the winding disc. And the outer surface of the halogen-free flame-retardant belting layer is wrapped with a protective layer. According to the utility model, through the arrangement of the winding disc, the cable body can be wound and stored, so that personnel can transport the cable body conveniently, and through the arrangement of the protection layer, because the low-smoke halogen-free flame-retardant sheath layer in the protection layer has good fireproof and flame-retardant effects, good fireproof and flame-retardant protection is formed on the surface of the cable body, so that the cable body can be prevented from being damaged. And meanwhile, through the arrangement of the halogen-free flame-retardant wrapping tape layer and the flame-retardant ethylene propylene rubber insulating layer, the halogen-free flame-retardant wrapping tape layer and the flame-retardant ethylene propylene rubber insulating layer have good fireproof and flame-retardant effects.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high-reliability steel core aluminum stranded wire cable. Background Art

[0002] Steel core aluminum stranded wire cable refers to a reinforced conductor with single or multiple layers of aluminum strands twisted around a galvanized steel core wire. The steel core mainly serves to increase strength, and the aluminum stranded wire mainly serves to transmit electrical energy. It is widely used in overhead transmission and distribution lines of various voltage levels. It has the characteristics of simple structure, easy installation and maintenance, low line cost, large transmission capacity, and is conducive to laying across special geographical conditions such as rivers and valleys. It has good electrical conductivity and mechanical properties, high tensile strength, and the distance between towers can be enlarged.

[0003] For example, the Chinese utility model provides "a high-reliability steel core aluminum stranded cable", and its announcement number is: CN212010389U. The application includes a steel core, an inner conductor layer, an outer conductor layer, a shielding layer, an insulating sheath, an elastic rubber layer, a buffer filler layer and a nylon sheath which are arranged in sequence from the inside to the outside. The steel core is formed by twisting multiple steel wires, and the cross-sectional shape of the steel wire is circular. The inner conductor layer and the outer conductor layer each include multiple strands of aluminum stranded wires of the same specification. The cross-sectional shape of the aluminum stranded wire is fan-shaped, and the outer circle of the fan-shaped is serrated with uneven contours. The elastic rubber layer includes an inner support sleeve, multiple elastic rubber tubes and an outer support sleeve from the inside to the outside. The high-reliability steel core aluminum stranded cable in the above technology lacks a good fire-retardant protection structure inside, resulting in poor fire protection effect during the overall use process. It is easily affected by the fire environment and causes surface combustion, which reduces the overall fire safety and is not conducive to use by personnel. Utility Model Content

[0004] The utility model aims to provide a high-reliability steel core aluminum stranded cable, which has the advantages of good fire retardant protection effect and improved overall safety of use, and solves the problem that the high-reliability steel core aluminum stranded cable in the above-mentioned technology lacks a good fire retardant protection structure inside, resulting in poor fire protection effect during the overall use process, and is easily affected by the fire environment, causing surface combustion, thereby reducing the overall fire safety of use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-reliability steel core aluminum stranded cable, comprising a winding drum, a cable body is wound on the surface of the winding drum, the cable body comprises a steel core and a flame-retardant EPDM rubber insulation layer, the surface of the steel core is wrapped with an aluminum core, the outer surface of the flame-retardant EPDM rubber insulation layer is wrapped with a halogen-free flame-retardant tape layer, the outer surface of the halogen-free flame-retardant tape layer is wrapped with a protective layer, and the protective layer comprises a low-smoke halogen-free flame-retardant sheath layer.

[0006] As a preferred solution, a polyamide fiber layer is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer, and a steel wire is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer and located outside the polyamide fiber layer.

[0007] As a preferred solution, the outer surface of the protective layer is coated with an anti-corrosion layer, and the anti-corrosion layer includes a polyurethane wear-resistant coating and a chlorinated rubber coating.

[0008] As a preferred solution, the surface of the polyurethane wear-resistant coating is coated on the surface of the chlorinated rubber coating, and the surface of the chlorinated rubber coating is coated on the outer surface of the protective layer.

[0009] As a preferred solution, the surface of the aluminum core is wrapped with a polyvinyl chloride layer, and the inner surface of the flame-retardant ethylene-propylene rubber insulation layer is wrapped on the outer surface of the polyvinyl chloride layer.

[0010] As a preferred solution, the right end of the cable body is covered with a rubber protective sleeve, the left end of the outer surface of the rubber protective sleeve is covered with a clamp, and the surface of the cable body is covered with a protective film.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model can wind up and store the cable body through the provision of a winding drum, so as to facilitate personnel to transport the cable body, and through the provision of a protective layer, since the low-smoke halogen-free flame-retardant sheath layer in the protective layer has good fire-retardant effects, a good fire-retardant protection is formed on the surface of the cable body, and at the same time, through the provision of a halogen-free flame-retardant tape layer and a flame-retardant EPDM rubber insulation layer, since both the halogen-free flame-retardant tape layer and the flame-retardant EPDM rubber insulation layer have good fire-retardant effects, further a good fire-retardant protection is formed inside the cable body, thereby ensuring to a great extent that the internal steel core and aluminum core can be used normally and safely, and improving the fire safety of the cable body.

[0013] 2. The utility model forms a double-layer strength protection inside the low-smoke halogen-free flame retardant sheath layer by arranging the polyamide fiber layer and the steel wire, effectively avoiding the low-smoke halogen-free flame retardant sheath layer from being broken due to force dragging during use, thereby ensuring the service life of the low-smoke halogen-free flame retardant sheath layer; through the arrangement of the anti-corrosion layer, since the polyurethane wear-resistant coating and the chlorinated rubber coating in the anti-corrosion layer both have good anti-corrosion performance, a double-layer anti-corrosion protection is formed on the surface of the cable body, effectively reducing the probability of surface corrosion of the cable body during long-term use, thereby improving the service life of the cable body; through the arrangement of the polyvinyl chloride layer, good insulation protection can be formed around the aluminum core and the steel core, thereby ensuring the insulation performance of the overall use; through the arrangement of the protective film, good protection can be formed around the cable body, thereby avoiding the surface of the cable body from being dirty during transportation; through the arrangement of the rubber protective sleeve, good protection can be formed at the end of the cable body, thereby avoiding water from entering the interior of the cable body during transportation and affecting the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the cable body structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the protective layer structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the anti-corrosion layer structure of the utility model.

[0018] In the figure: 1. Cable body; 11. Anti-corrosion layer; 111. Polyurethane wear-resistant coating; 112. Chlorinated rubber coating; 12. Protective layer; 121. Low-smoke halogen-free flame-retardant sheath layer; 122. Steel wire; 123. Polyamide fiber layer; 13. Halogen-free flame-retardant tape layer; 14. Flame-retardant EPDM rubber insulation layer; 15. Polyvinyl chloride layer; 16. Aluminum core; 17. Steel core; 2. Protective film; 3. Winding drum; 4. Rubber protective cover; 5. Clamp. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4A high-reliability steel-core aluminum stranded cable comprises a winding drum 3, a cable body 1 is wound on the surface of the winding drum 3, the cable body 1 comprises a steel core 17 and a flame-retardant EPDM rubber insulation layer 14, the surface of the steel core 17 is wrapped with an aluminum core 16, the outer surface of the flame-retardant EPDM rubber insulation layer 14 is wrapped with a halogen-free flame-retardant tape layer 13, the outer surface of the halogen-free flame-retardant tape layer 13 is wrapped with a protective layer 12, and the protective layer 12 comprises a low-smoke halogen-free flame-retardant sheath layer 121.

[0021] Through the above technical scheme, through the setting of the winding drum 3, the cable body 1 can be wound and stored to facilitate personnel to transport the cable body 1, and through the setting of the protective layer 12, since the low-smoke halogen-free flame retardant sheath layer 121 in the protective layer 12 has good fire retardant effect, a good fire retardant protection is formed on the surface of the cable body 1, and at the same time, through the setting of the halogen-free flame retardant tape layer 13 and the flame retardant EPDM rubber insulation layer 14, since both the halogen-free flame retardant tape layer 13 and the flame retardant EPDM rubber insulation layer 14 have good fire retardant effect, further good fire retardant protection is formed inside the cable body 1, thereby ensuring to a great extent that the internal steel core 16 and aluminum core 17 can be used normally and safely, thereby improving the fire safety of the cable body 1.

[0022] The polyamide fiber layer 123 is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer 121 , and the steel wire 122 is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer 121 and outside the polyamide fiber layer 123 .

[0023] Through the above technical scheme, by setting the polyamide fiber layer 123 and the steel wire 122, a double-layer strength protection is formed inside the low-smoke halogen-free flame retardant sheath layer 121, which effectively avoids the low-smoke halogen-free flame retardant sheath layer 121 from breaking due to force and dragging during use, thereby ensuring the service life of the low-smoke halogen-free flame retardant sheath layer 121.

[0024] The outer surface of the protective layer 12 is coated with an anti-corrosion layer 11 , and the anti-corrosion layer 11 includes a polyurethane wear-resistant coating 111 and a chlorinated rubber coating 112 .

[0025] Through the above technical scheme, by setting the anti-corrosion layer 11, since the polyurethane wear-resistant coating 111 and the chlorinated rubber coating 112 in the anti-corrosion layer 11 both have good anti-corrosion performance, a double-layer anti-corrosion protection is formed on the surface of the cable body 1, which effectively reduces the probability of the surface of the cable body 1 being corroded during long-term use, and improves the service life of the cable body 1.

[0026] The surface of the polyurethane wear-resistant coating 111 is coated on the surface of the chlorinated rubber coating 112 , and the surface of the chlorinated rubber coating 112 is coated on the outer surface of the protective layer 12 .

[0027] The surface of the aluminum core 16 is wrapped with a polyvinyl chloride layer 15 , and the inner surface of the flame-retardant ethylene-propylene rubber insulation layer 14 is wrapped on the outer surface of the polyvinyl chloride layer 15 .

[0028] Through the above technical scheme, by setting the polyvinyl chloride layer 15, good insulation protection can be formed around the aluminum core 16 and the steel core 17, ensuring the insulation performance of the whole use. By setting the protective film 2, good protection can be formed around the cable body 1 to prevent the surface of the cable body 1 from being dirty during transportation.

[0029] The right end of the cable body 1 is covered with a rubber protective sleeve 4, the left end of the outer surface of the rubber protective sleeve 4 is covered with a clamp 5, and the surface of the cable body 1 is covered with a protective film 2.

[0030] Through the above technical solution, by providing the rubber protective cover 4, good protection can be formed at the end of the cable body 1 to prevent water from entering the interior of the cable body 1 during transportation and affecting its use.

[0031] The working principle of the utility model is as follows: through the setting of the winding drum 3, the cable body 1 can be wound and stored to facilitate personnel to transport the cable body 1, and through the setting of the protective layer 12, since the low-smoke halogen-free flame retardant sheath layer 121 in the protective layer 12 has good fire retardant effect, a good fire retardant protection is formed on the surface of the cable body 1, and at the same time, through the setting of the halogen-free flame retardant tape layer 13 and the flame retardant EPDM rubber insulation layer 14, since both the halogen-free flame retardant tape layer 13 and the flame retardant EPDM rubber insulation layer 14 have good fire retardant effect, further a good fire retardant protection is formed inside the cable body 1, thereby ensuring to a great extent that the internal steel core 16 and aluminum core 17 can be used normally and safely, thereby improving the fire safety of the cable body 1.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A high reliability steel core aluminum stranded wire cable, comprising a winding drum (3), characterized in that: A cable body (1) is wound on the surface of the winding drum (3), the cable body (1) comprising a steel core (17) and a flame-retardant ethylene-propylene rubber insulation layer (14), the surface of the steel core (17) is wrapped with an aluminum core (16), the outer surface of the flame-retardant ethylene-propylene rubber insulation layer (14) is wrapped with a halogen-free flame-retardant tape layer (13), the outer surface of the halogen-free flame-retardant tape layer (13) is wrapped with a protective layer (12), and the protective layer (12) comprises a low-smoke halogen-free flame-retardant sheath layer (121).

2. A high reliability steel core aluminum stranded cable according to claim 1, characterized in that: A polyamide fiber layer (123) is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer (121), and a steel wire (122) is fixedly connected to the surface of the low-smoke halogen-free flame-retardant sheath layer (121) and located outside the polyamide fiber layer (123).

3. A high reliability steel core aluminum stranded wire cable according to claim 1, characterized in that: The outer surface of the protective layer (12) is coated with an anti-corrosion layer (11), and the anti-corrosion layer (11) comprises a polyurethane wear-resistant coating (111) and a chlorinated rubber coating (112).

4. A high reliability steel core aluminum stranded wire cable according to claim 3, characterized in that: The surface of the polyurethane wear-resistant coating (111) is coated on the surface of the chlorinated rubber coating (112), and the surface of the chlorinated rubber coating (112) is coated on the outer surface of the protective layer (12).

5. The high reliability steel core aluminum stranded wire cable according to claim 1, characterized in that: The surface of the aluminum core (16) is wrapped with a polyvinyl chloride layer (15), and the inner surface of the flame-retardant ethylene-propylene rubber insulation layer (14) is wrapped on the outer surface of the polyvinyl chloride layer (15).

6. A high reliability steel core aluminum stranded wire cable according to claim 1, characterized in that: The right end of the cable body (1) is covered with a rubber protective sleeve (4), the left end of the outer surface of the rubber protective sleeve (4) is covered with a clamp (5), and the surface of the cable body (1) is covered with a protective film (2).

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