CN213092872U - Low-voltage shielding aluminum alloy power cable - Google Patents

Abstract

The utility model provides a low pressure shielding aluminum alloy power cable belongs to the wire and cable field. The low-voltage shielding aluminum alloy power cable comprises a steel wire reinforcing rope, a cable and a protection assembly. The cable core is an aluminum alloy conductor. The shielding layer wraps the surface of the fireproof layer, the insulating layer wraps the surface of the shielding layer, and the wear-resistant layer wraps the surface of the insulating layer; the arrangement of the steel wire reinforcing rope is additionally arranged, the structural strength of the cable is improved, the cable core is an aluminum alloy conductor, and an aluminum alloy conductor core is adopted, so that the defects of poor flexibility, creep resistance and corrosion resistance of a pure aluminum core are overcome; the fire-proof layer and the shielding layer are additionally arranged for reducing the interference of external low voltage on the cable, so that the anti-interference performance of the cable is increased, the wear-resistant layer on the outermost layer increases the wear resistance and corrosion resistance of the cable, and the service life of the cable is prolonged; the cable has better compression resistance and impact resistance.

Description

Low-voltage shielding aluminum alloy power cable

Technical Field

The utility model relates to a wire and cable field particularly, relates to a low pressure shielding aluminum alloy power cable.

Background

At present, with the rapid development of various industries, the application of wires and cables is more and more extensive, and simultaneously, higher requirements are put forward on various performances of the cables; the copper resource is increasingly tense and is endangered to be deficient, and the aluminum has good conductive effect, light weight and low price, so that the aluminum is used for replacing the copper to be great tendency;

the existing common aluminum core cable has poor mechanical property and corrosion resistance, low fireproof performance, easy fire initiation, low anti-interference capability and poor flexibility, creep resistance and corrosion resistance of a pure aluminum wire core, and is suitable for cables frequently moved; certain damage can be caused to the cable, and the structure and the electrical performance of the cable are damaged.

SUMMERY OF THE UTILITY MODEL

In order to compensate the above deficiency, the utility model provides a low pressure shielding aluminum alloy power cable aims at improving the current mechanical properties of ordinary aluminium core cable and the relatively poor problem of corrosion resisting property.

The utility model discloses a realize like this:

the utility model provides a low pressure shielding aluminum alloy power cable, strengthen rope, cable conductor and protection component including the steel wire.

The cable conductor includes cable core and outer jacket, the outer jacket parcel the cable core surface, the cable core is the aluminum alloy conductor, the cable conductor is provided with a plurality ofly, and is a plurality of the cable conductor evenly sets up the outer wall of steel wire reinforcing rope.

The protection component comprises a fireproof layer, a shielding layer, an insulating layer and a wear-resistant layer, the fireproof layer is wrapped on the surface of the cable, the shielding layer is wrapped on the surface of the fireproof layer, the insulating layer is wrapped on the surface of the shielding layer, and the wear-resistant layer is wrapped on the surface of the insulating layer.

In an embodiment of the present invention, the steel wire reinforcing rope is a carbon steel wire rope with a diameter of 10-20mm, the outer sheath layer includes, from inside to outside, an inner sheath layer, an isolation layer and an outer sheath layer, and the surface of the outer sheath layer is provided with an armor layer.

In an embodiment of the present invention, the armor layer is a steel tape armor layer or an aluminum alloy tape interlocking armor layer, the inner sheath layer is a medium density polyethylene inner sheath layer, the isolation layer is a glass fiber polyester tape isolation layer, and the outer sheath layer is a medium density polyethylene outer sheath layer capable of preventing termites.

The utility model discloses an embodiment, the cable core is formed by single or many transposition, its tensile strength of cable core is not less than 90MPa, and elongation at break is not less than 10%, and volume resistivity is less than or equal to 0.028263 omega mm 2/m.

The utility model discloses an in one embodiment, the steel wire reinforcing rope with be provided with the fire extinguishing pipe between the cable conductor, the fire extinguishing pipe is provided with along the length direction interval and holds the chamber, it has carbon dioxide gas to hold the intracavity packing.

In an embodiment of the utility model, the fire-proof layer includes fire-resistant fiber layer and foam insulation layer, fire-resistant fiber layer sets up at foam insulation layer surface.

In an embodiment of the present invention, the insulating layer is a flame-retardant crosslinked polyethylene insulating layer or a polyolefin insulating layer, and the wear-resistant layer is a rubber wear-resistant layer.

The utility model discloses an in one embodiment, the cable conductor surface with draw together and be provided with the filling layer between the flame retardant coating inner wall, the filling layer is the rock wool filling layer.

In an embodiment of the present invention, the shielding layer includes a low-voltage shielding layer and metal shielding wires, and the metal shielding wires are interlaced and woven into a metal shielding mesh.

In an embodiment of the present invention, the metal shielding net is a non-magnetic metal shielding layer, and the non-magnetic metal shielding net is formed by one or more metal bands or metal weaves or concentric layers of metal wires or is formed by combining metal wires and metal bands.

The utility model has the advantages that: the utility model discloses a low pressure shielding aluminum alloy power cable who obtains through above-mentioned design, when using, add the setting of steel wire reinforcing rope, increase the structural strength of cable conductor, the cable core is the aluminum alloy conductor, adopts aluminum alloy conductor sinle silk, has solved the shortcoming that pliability, creep resistance and corrosion resistance that pure aluminum core exists are poor; the fire-resistant layer is additionally arranged, so that the fire resistance of the cable is increased, the external temperature can be isolated, the insulating layer is additionally arranged, so that the cable has good insulativity, the shielding layer is used for reducing the interference of external low voltage on the cable, the anti-interference performance of the cable is increased, the wear-resistant layer on the outermost layer increases the wear resistance and the corrosion resistance of the cable, and the service life of the cable is prolonged; the cable has better compression resistance and impact resistance, is easy to bend, resists corrosion, has light weight and is convenient to install.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic cross-sectional structure diagram of a protection assembly provided by an embodiment of the present invention;

fig. 2 is a schematic sectional view of a fire extinguishing tube according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of an outer sheath according to an embodiment of the present invention.

In the figure: 100. a steel wire reinforcing rope; 110. fire extinguishing pipes; 111. an accommodating chamber; 200. a cable wire; 210. a cable core; 230. an outer jacket; 231. an inner jacket layer; 233. an isolation layer; 235. an outer jacket layer; 237. an armor layer; 300. a guard assembly; 310. a fire barrier layer; 311. a refractory fiber layer; 313. a foam thermal insulation layer; 340. a filling layer; 360. a shielding layer; 370. an insulating layer; 380. and a wear-resistant layer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the utility model provides a. Embodiments, all other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a low-voltage shielding aluminum alloy power cable comprises a steel wire reinforcing rope 100, a cable wire 200 and a protection component 300.

Wherein, cable conductor 200 strengthens rope 100 surface at the steel wire respectively, strengthens its tensile supporting role of rope 100 through the steel wire, reduces cable conductor 200 and receives the cracked possibility of pulling force, and protection component 300 is used for protecting cable conductor 200 and avoids destroying.

Referring to fig. 1 to 3, the cable 200 includes a cable core 210 and an outer sheath 230, the outer sheath 230 wraps an outer surface of the cable core 210, the cable core 210 is an aluminum alloy conductor, the plurality of cables 200 are provided, and the plurality of cables 200 are uniformly arranged on an outer wall of the steel wire reinforced rope 100;

in this embodiment, the steel wire reinforced rope 100 is a carbon steel wire rope with a diameter of 10-20mm, preferably a carbon steel wire rope with a diameter of 15mm, the outer sheath 230 includes, from inside to outside, an inner sheath layer 231, an isolation layer 233 and an outer sheath layer 235, and an armor layer 237 is disposed on the surface of the outer sheath layer 235; wherein, armor 237 is steel band armor or aluminum alloy area interlocking armor, and armor 237 can design into steel band armor or aluminum alloy area interlocking armor two kinds of modes promptly, forms the chain armor mode of a self-locking type, forms each other to detain between adjacent steel band armor or the aluminum alloy area interlocking armor, not only makes the cable have better resistance to compression and shock resistance, and flexible, corrosion-resistant, light in weight, simple to operate, inner sheath layer 231 be medium density polyethylene inner sheath layer, isolation layer 233 be glass silk polyester band isolation layer, outer sheath layer 235 for the medium density polyethylene outer sheath layer that can prevent the termite, improved the performance of cable, life increases.

In other embodiments, the cable core 210 is formed by twisting one or more cables, and the cable core 210 has a tensile strength of not less than 90MPa, an elongation at break of not less than 10%, and a volume resistivity of not more than 0.028263 Ω · mm 2/m; the sectional area of the conductor is increased, so that the conductive effect same as that of copper can be achieved, the bending performance is better, the weight is light, the installation is easy, and the conductor can be particularly applied to narrow places in mines.

A fire extinguishing pipe 110 is disposed between the steel wire reinforcing rope 100 and the cable wire 200, an accommodating cavity 111 is disposed at intervals along the length direction of the fire extinguishing pipe 110, and the accommodating cavity 111 is filled with carbon dioxide gas for preventing spontaneous combustion.

Referring to fig. 1, the protective assembly 300 includes a fire-retardant layer 310, a shielding layer 360, an insulating layer 370 and an abrasion-resistant layer 380, the fire-retardant layer 310 is wrapped on the surface of the cable 200, the shielding layer 360 is wrapped on the surface of the fire-retardant layer 310, the insulating layer 370 is wrapped on the surface of the shielding layer 360, and the abrasion-resistant layer 380 is wrapped on the surface of the insulating layer 370.

In the embodiment, the fire-proof layer 310 comprises a fire-resistant fiber layer 311 and a foam insulation layer 313, wherein the fire-resistant fiber layer 311 is arranged on the outer surface of the foam insulation layer 313, so that the fire resistance of the electric cable 200 is increased, and the external connection temperature can be insulated; the insulating layer 370 is a flame-retardant cross-linked polyethylene insulating layer or a polyolefin insulating layer, so that the cable 2 has good insulativity, the wear-resistant layer 380 is a rubber wear-resistant layer, the wear resistance and corrosion resistance of the cable 200 are improved, the service life of the cable 200 is prolonged, the flame-retardant cross-linked polyethylene insulating layer is selected to prevent the cable from dripping and delaying combustion when the cable catches fire, the safety performance of the cable is improved, and the purposes of the cable are enlarged.

It should be noted that a filling layer 340 is disposed between the outer surface of the cable line 200 and the inner wall of the fireproof layer 310, and the filling layer 340 is a rock wool filling layer, so as to improve the ignition point of the cable line 200.

In a specific implementation, the shielding layer 360 includes a low-voltage shielding layer and metal shielding wires, and the metal shielding wires are interwoven into a metal shielding mesh, so as to reduce interference of external low voltage on the cable line 200, and increase interference resistance of the cable line 200; the metal shielding net is a non-magnetic metal shielding layer, and the non-magnetic metal shielding net is formed by one or more metal bands or a metal braid or a concentric layer of metal wires or a combination of the metal wires and the metal bands.

The working principle of the low-voltage shielding aluminum alloy power cable is as follows: when the cable is used, the steel wire reinforcing rope 100 is additionally arranged, the structural strength of the cable 200 is improved, the cable core 210 is an aluminum alloy conductor, and an aluminum alloy conductor core is adopted, so that the defects of poor flexibility, creep resistance and corrosion resistance of a pure aluminum core are overcome; the added fireproof layer 310 enables the fire resistance of the cable 200 to be increased and the external temperature to be isolated, the added insulating layer 370 enables the cable 200 to have good insulating property, the shielding layer 360 is used for reducing the interference of external low pressure on the cable 200, the anti-interference performance of the cable 200 is increased, the outermost wear-resistant layer 380 increases the wear resistance and corrosion resistance of the cable 200, and the service life of the cable 200 is prolonged; the cable has the advantages of good compression resistance and impact resistance, easy bending, corrosion resistance, light weight, convenient installation, geomagnetic interference resistance, insect and rat bite prevention, and fire resistance.

It should be noted that the specific model specification of the cable core needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A low-voltage shielding aluminum alloy power cable is characterized by comprising

A steel wire reinforcing cord (100);

the cable (200) comprises a cable core (210) and an outer protective layer (230), the outer protective layer (230) wraps the outer surface of the cable core (210), the cable core (210) is an aluminum alloy conductor, a plurality of cables (200) are arranged, and the plurality of cables (200) are uniformly arranged on the outer wall of the steel wire reinforcing rope (100);

protection component (300), protection component (300) includes flame retardant coating (310), shielding layer (360), insulating layer (370) and wearing layer (380), include flame retardant coating (310) wrap up in cable conductor (200) surface, shielding layer (360) wrap up in flame retardant coating (310) surface, insulating layer (370) wrap up in shielding layer (360) surface, wearing layer (380) wrap up in insulating layer (370) surface.

2. The low-voltage shielding aluminum alloy power cable according to claim 1, wherein the steel wire reinforcing rope (100) is a carbon steel wire rope with a diameter of 10-20mm, the outer sheath (230) comprises an inner sheath layer (231), an isolation layer (233) and an outer sheath layer (235) from inside to outside, and the surface of the outer sheath layer (235) is provided with an armor layer (237).

3. The low-voltage shielded aluminum alloy power cable as claimed in claim 2, wherein the armor layer (237) is a steel tape armor layer or an aluminum alloy tape interlocking armor layer, the inner sheath layer (231) is a medium density polyethylene inner sheath layer, the isolation layer (233) is a glass fiber polyester tape isolation layer, and the outer sheath layer (235) is a medium density polyethylene outer sheath layer capable of preventing termites.

4. The low-voltage shielding aluminum alloy power cable as claimed in claim 1, wherein the cable core (210) is formed by twisting one or more cables, the tensile strength of the cable core (210) is not less than 90MPa, the elongation at break is not less than 10%, and the volume resistivity is not more than 0.028263 Ω -mm 2/m.

5. The low-voltage shielding aluminum alloy power cable according to claim 1, wherein fire extinguishing tubes (110) are arranged between the steel wire reinforcing ropes (100) and the cable wires (200), the fire extinguishing tubes (110) are provided with accommodating cavities (111) at intervals along a length direction, and the accommodating cavities (111) are filled with carbon dioxide gas.

6. The low voltage shielding aluminum alloy power cable according to claim 1, wherein the fire-resistant layer (310) comprises a fire-resistant fiber layer (311) and a foam insulation layer (313), and the fire-resistant fiber layer (311) is arranged on the outer surface of the foam insulation layer (313).

7. The low voltage shielding aluminum alloy power cable of claim 1, wherein the insulating layer (370) is a flame retardant cross-linked polyethylene insulating layer or a polyolefin insulating layer, and the abrasion resistant layer (380) is a rubber abrasion resistant layer.

8. The low-voltage shielding aluminum alloy power cable as claimed in claim 1, wherein a filling layer (340) is arranged between the outer surface of the cable wire (200) and the inner wall of the fireproof layer (310), and the filling layer (340) is a rock wool filling layer.

9. The low voltage shielded aluminum alloy power cable of claim 1, wherein said shielding layer (360) comprises a low voltage shielding layer and metallic shielding wires, said metallic shielding wires being interwoven into a metallic shielding mesh.

10. The low voltage shielded aluminum alloy power cable of claim 9, wherein the metallic shielding mesh is a non-magnetic metallic shielding layer, and the non-magnetic metallic shielding mesh is formed by one or more metallic strips or concentric layers of metallic braid or metallic wire or a combination of metallic wire and metallic strip.

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