CN214505073U - Weather-resistant cable - Google Patents

Abstract

The utility model discloses a resistant cable of waiting, its characterized in that: the cable comprises a supporting layer, a steel core bundle layer, an aluminum strand layer, a fireproof layer, a waterproof layer, a weather-resistant layer and a rubber sleeve, wherein the supporting layer is positioned at the geometric center of the cross section of the cable; a steel core bundle layer is arranged outside the supporting layer; the outside of the steel core bundle layer is wrapped with an aluminum stranded layer; a fireproof layer is arranged outside the aluminum stranded layer; a waterproof layer is arranged outside the fireproof layer; a weather-resistant layer is arranged outside the waterproof layer, and a rubber sleeve is arranged outside the weather-resistant layer; the beneficial effects of the utility model reside in that: the supporting layer can play a supporting role, meanwhile, the steel cores are prevented from being contacted with each other, heat dissipation is facilitated, certain sliding property is achieved, and the cable is prevented from being broken easily due to too strong rigidity; the steel core bundle layer is made of weather-resistant steel material, and has the characteristics of rust resistance, corrosion resistance, long service life, thinning and consumption reduction of the member; the tensile strength and the wear-resistant and bending-resistant fatigue resistance of the cable can be greatly improved by using the PBO fiber, and the service life of the cable is prolonged.

Description

Weather-resistant cable

Technical Field

The utility model relates to a cable field especially relates to a resistant cable of waiting.

Background

With the continuous development of the scale of the power distribution network, faults such as short circuit, disconnection, external force damage, single-phase grounding and the like occur continuously, wherein the external force damage is the most. The power supply reliability of the power distribution network not only influences the production and the electricity consumption of enterprises and the life of residents, but also influences the quality and the social benefits of the electricity consumption. In order to reduce the number of power distribution network accidents and reduce the range of power distribution accidents, underground cables or overhead insulated cables are generally adopted, and the overhead insulated cables also have a series of advantages, such as small space and parallel space at cable intersections, convenience in laying, high flexibility, small occupied space, few power failure times and electric shock accidents caused by line faults, good safety and reliability of a power grid and the like.

With the wide application of the overhead insulated cable, the quality requirement of the cable is continuously improved. The common overhead insulated cable is used for power transmission in cities, rural areas and mountains, but the existing cable has poor strength and toughness and small breaking force, and is easy to break in places needing large-span erection, such as crossing rivers, air ports, high altitude and the like, so that accidents are easy to cause, and certain economic loss can be caused. And the overhead insulated cable needs to be laid in severe weather environments such as sunshine, rain, snow and the like for a long time, the cable is large in energy consumption and poor in weather resistance, and the insulation is damaged by freezing and damp, ultraviolet radiation and the like due to overlong time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a resistant cable that weathers to prior art not enough.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A weatherable cable, comprising: the fire extinguishing cable comprises a supporting layer, a steel core bundle layer, an aluminum stranded layer, a fireproof layer, a waterproof layer, a weather-resistant layer and a rubber sleeve, wherein a plurality of hollow supporting frames with pentagonal cross sections are arranged in the supporting layer; a steel core bundle layer is arranged outside the supporting layer; the outside of the steel core bundle layer is wrapped with an aluminum stranded layer; a fireproof layer is arranged outside the aluminum stranded layer; a waterproof layer is arranged outside the fireproof layer; and a weather-resistant layer is arranged outside the waterproof layer, and a rubber sleeve is arranged outside the weather-resistant layer.

Furthermore, the steel core bundle layer is made of weather-resistant steel materials, five steel cores are annularly arranged in the steel core bundle layer, each steel core is formed by 5-10 weather-resistant steels in a closest-packed arrangement mode, the circle center of a circle formed by the steel core bundle layer is overlapped with the circle center of an external circle of the support frame, and a heat insulation layer is arranged outside each steel core.

Furthermore, the heat insulation layer is made of composite magnesium aluminum silicate heat insulation paint.

Furthermore, the aluminum stranded layer is formed by twisting high-conductivity copper wires, and tensile fibers are filled in the gap between the steel core bundle layer and the aluminum stranded layer.

Furthermore, the tensile fiber is made of polypropylene fiber.

Furthermore, the fireproof layer is made of polyolefin fireproof insulating paint.

Furthermore, the waterproof layer is made of polyurethane waterproof paint.

Further, the weather-resistant layer is composed of PBO fibers.

The beneficial effects of the utility model reside in that: the supporting layer can play a supporting role, meanwhile, the center has no cable to avoid the mutual contact of the steel cores, so that the heat dissipation is facilitated, the fire extinguishing powder filled in the center has fire resistance and certain sliding property, and the cable is prevented from being broken or bent easily due to too strong rigidity; the steel core bundle layer is made of weather-resistant steel material, and has the characteristics of rust resistance, corrosion resistance, long service life, thinning and consumption reduction of the member; the PBO fiber is used as the weather-resistant layer, so that the tensile strength, the wear resistance, the bending resistance and the fatigue resistance of the cable can be greatly improved, and the service life of the cable is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an axial schematic view of the middle support layer of the present invention;

in the figure: 1. a support layer; 11. fire extinguishing powder; 12. a support frame; 13. fire-resistant mica tapes; 2. a steel core bundle layer; 21. a steel core; 22. a thermal insulation layer; 3. an aluminum stranded layer; 4. a tensile fiber; 5. a fire barrier layer; 6. a waterproof layer; 7. a weatherable layer; 8. a rubber sleeve.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the contents of the specification.

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

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in the figure: a weather-resistant cable comprises a supporting layer 1, a steel core bundle layer 2, an aluminum strand layer 3, a fireproof layer 5, a waterproof layer 6, a weather-resistant layer 7 and a rubber sleeve 8.

The fire extinguishing support is characterized in that a plurality of hollow support frames 12 with pentagonal cross sections are arranged in the support layer 1, fire-resistant mica tapes 13 are wound on the outer portions of the support frames 12, fire extinguishing powder 11 is filled in the support frames 12 and in gaps between the support frames and the fire-resistant mica tapes 13, the support layer 1 is located at the geometric center of the cross section of a cable, and can play a supporting role through the support frames 12, meanwhile, no cable is arranged at the center, so that the steel core is prevented from being in contact with each other, heat dissipation is facilitated, the fire extinguishing powder 11 filled in the support layer 1 at the center has fire resistance and certain sliding performance, and the cable is prevented from being broken or bent due to too strong rigidity.

The supporting layer is externally provided with a steel core bundle layer 2, the steel core bundle layer 2 is made of a weather-resistant steel material, the weather-resistant steel material is a material which is formed by adding corrosion-resistant metal elements such as copper and nickel into plain carbon steel and has the characteristics of rust resistance, corrosion resistance, service life prolonging, thinning and consumption reduction of the member, five steel cores 21 are annularly arranged in the steel core bundle layer 2, each steel core 21 is formed by 5-10 pieces of weather-resistant steel which are densely stacked, the circle center of a circle formed by the steel core bundle layer 2 is superposed with the circle center of an external circle of the supporting frame 12, a heat-insulating layer 22 is arranged outside each steel core 21, and the heat-insulating layer 22 is made of a composite magnesium aluminum silicate heat-insulating coating;

the aluminum stranded layer 3 is wrapped outside the steel core bundle layer 2, the aluminum stranded layer 3 is formed by twisting high-conductivity copper wires, and the aluminum stranded layer and the copper wires are mutually interwoven and surround the outer side of the steel core bundle layer 2, so that the strength of a conductor is enhanced, a tensile fiber 4 is filled in a gap between the steel core bundle layer 2 and the aluminum stranded layer 3, and the tensile fiber 4 is made of polypropylene fibers;

a fireproof layer 5 is arranged outside the aluminum stranded layer 3, and the fireproof layer 5 is made of polyolefin fireproof insulating paint;

a waterproof layer 6 is arranged outside the fireproof layer 5, and the waterproof layer 6 is made of polyurethane waterproof paint;

the waterproof layer 6 is externally provided with a weather-resistant layer 7, the weather-resistant layer 7 is formed by PBO fibers which are interwoven and surround the outer side of the waterproof layer 6, the density of the weather-resistant layer 7 is not less than ninety-eight percent, the strength, the modulus, the heat resistance and the flame resistance of the PBO fibers are extremely high, and the strength of the PBO fibers not only exceeds that of steel fibers, but also can surpass that of carbon fibers. In addition, the PBO fiber has excellent impact resistance, friction resistance and dimensional stability, and the tensile strength, the wear resistance and the bending resistance of the cable can be greatly improved by using the PBO fiber as the weather-resistant layer 7, so that the service life of the cable is prolonged;

and a rubber sleeve 8 is arranged outside the weather-resistant layer 7.

The beneficial effects of the utility model reside in that: the supporting layer 1 is arranged to play a supporting role, meanwhile, no cable is arranged in the center to prevent the steel cores from being contacted with each other, so that heat dissipation is facilitated, the fire extinguishing powder 11 filled in the center has flame retardance and certain sliding property, and the cable is prevented from being broken or bent easily due to too strong rigidity; the steel core bundle layer 2 is made of weather-resistant steel material, and has the characteristics of rust resistance, corrosion resistance, long service life, thinning and consumption reduction of the member; the PBO fiber is used as the weather-resistant layer 7, so that the tensile strength, the wear resistance, the bending resistance and the fatigue resistance of the cable can be greatly improved, and the service life of the cable is prolonged.

It is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims (8)

1. A weatherable cable, comprising: the cable comprises a supporting layer (1), a steel core bundle layer (2), an aluminum strand layer (3), a fireproof layer (5), a waterproof layer (6), a weather-resistant layer (7) and a rubber sleeve (8), wherein a plurality of hollow supporting frames (12) with pentagonal cross sections are arranged in the supporting layer (1), a fire-resistant mica tape (13) is wound outside the supporting frames (12), fire extinguishing powder (11) is filled in the supporting frames (12) and in gaps between the supporting frames and the fire-resistant mica tape (13), and the supporting layer (1) is positioned at the geometric center of the cross section of the cable; a steel core bundle layer (2) is arranged outside the supporting layer (1); the steel core bundle layer (2) is wrapped with an aluminum strand layer (3); a fireproof layer (5) is arranged outside the aluminum stranded layer (3); a waterproof layer (6) is arranged outside the fireproof layer (5); and a weather-resistant layer (7) is arranged outside the waterproof layer (6), and a rubber sleeve (8) is arranged outside the weather-resistant layer (7).

2. The weatherable cable according to claim 1, wherein: the steel core bundle layer (2) is made of weather-resistant steel materials, five steel cores (21) are annularly arranged in the steel core bundle layer (2), each steel core (21) is formed by 5-10 weather-resistant steels in a closest-packed arrangement mode, the circle center of a circle formed by the steel core bundle layer (2) is coincided with the circle center of an external circle of the support frame (12), and a heat insulation layer (22) is arranged outside each steel core (21).

3. The weatherable cable according to claim 2, wherein: the heat insulation layer (22) is made of composite magnesium aluminum silicate heat insulation coating.

4. The weatherable cable according to claim 1, wherein: the aluminum stranded layer (3) is formed by twisting high-conductivity copper wires, and tensile fibers (4) are filled in gaps between the steel core bundle layer (2) and the aluminum stranded layer (3).

5. The weatherable cable according to claim 4, wherein: the tensile fiber (4) is made of polypropylene fiber.

6. The weatherable cable according to claim 1, wherein: the fireproof layer (5) is made of polyolefin fireproof insulating paint.

7. The weatherable cable according to claim 1, wherein: the waterproof layer (6) is made of polyurethane waterproof paint.

8. The weatherable cable according to claim 1, wherein: the weather-resistant layer (7) is composed of PBO fibers.

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