CN213025497U - High-strength armored power cable - Google Patents

Abstract

The utility model discloses a high strength armor power cable, it includes sheath (1), sets up reinforcement (3) and a plurality of conductor unit in sheath (1), insulating layer (4) are towards on one side of reinforcement (3) and along the length direction interval of insulating layer (4) set firmly a plurality of toper working of plastics (7), set up a plurality of toper troughs (8) radially corresponding with toper working of plastics (7) on the cylinder of reinforcement (3), toper working of plastics (7) on each conductor unit respectively corresponding embedding in toper trough (8), are provided with filling layer (6) between insulating layer (4), sheath (1), toper working of plastics (7) and reinforcement (3); the basalt fiber layer (9) is wrapped outside the sheath (1). The utility model has the advantages that: compact structure, high compression strength and high tensile strength, and can prevent the conductor from being stolen.

Description

High-strength armored power cable

Technical Field

The utility model relates to a technical field of armor power cable structure, especially a high strength armor power cable.

Background

The armored power cable is a cable which uses copper or aluminum as a conductor and is wrapped by a corresponding insulating sleeve outside the conductor and is used for transmitting and distributing electric energy, and the power cable is commonly used for urban power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. Along with the continuous development of cities, and due to the requirements of safety of power supply and utilization and concise appearance and appearance of cities, more and more power cables are buried underground, and an urban underground power grid is formed.

The existing armored power cable is structurally shown in fig. 1 and comprises a sheath 1 and a steel mesh 2 wrapped outside the sheath 1, a reinforcing part 3 and a plurality of conductor units are arranged in the sheath 1, the conductor units are distributed around the reinforcing part 3 and consist of an insulating layer 4 and a conductor 5, the conductor 5 is wrapped in the insulating layer 4, and a filling layer 6 is arranged among the insulating layer 4, the reinforcing part 3 and the sheath 1. The steel mesh 2 plays a role of protecting the sheath 1, so that the sheath 1 of the armored power cable is prevented from being damaged in the dragging process; the reinforcing member 3 serves to increase the compressive strength of the armored power cable. However, the conductor 5 in such an armored power cable is very expensive in market price, and often stolen and sold by a thief, and when the thief uses a special tool to cut off both ends of the armored power cable on site, then forcibly pulls out the conductor unit from the sheath 1, and finally cuts off the insulating layer 4 along the length direction of the conductor 5 by using a blade, and finally the conductor 5 can be stolen. In addition, most of the armored power cables are laid on the ground, and the armored power cables are often intentionally stepped on by people, so that the conductor units are pressed towards the reinforcing part 3, the conductor 5 is pressed and deformed, and the electrical property of the conductor 5 is further reduced. Therefore, a high-strength armored power cable with high compressive strength and tensile strength and capable of preventing conductors from being stolen is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, compressive strength are big, tensile strength is big, prevent that the conductor is stolen high strength armor power cable.

The purpose of the utility model is realized through the following technical scheme: a high-strength armored power cable comprises a sheath, a reinforcing part and a plurality of conductor units, wherein the reinforcing part and the plurality of conductor units are arranged in the sheath, the conductor units are distributed around the circumference of the reinforcing part, each conductor unit comprises an insulating layer and a conductor, the conductors are wrapped in the insulating layers, a plurality of conical plastic parts are fixedly arranged on one surface, facing the reinforcing part, of each insulating layer at intervals along the length direction of the corresponding insulating layer, a plurality of conical grooves corresponding to the conical plastic parts in the radial direction are formed in the cylindrical surface of the reinforcing part, the conical plastic parts on the conductor units are correspondingly embedded into the conical grooves respectively, and filling layers are arranged among the insulating layers, the sheath, the conical plastic parts and the reinforcing; the outside of the sheath is wrapped with a basalt fiber layer, and the outside of the basalt fiber layer is wrapped with a steel mesh.

Four conductor units are uniformly distributed around the reinforcing piece.

The conical plastic part and the insulating layer are integrally formed.

The distance between two adjacent conical plastic parts on the insulating layer is equal.

The reinforcing piece is arranged in the middle of the sheath, and the reinforcing piece and the sheath are coaxially arranged.

The cross-section of the reinforcing member is circular.

The utility model has the advantages of it is following: the utility model discloses compact structure, compressive strength are big, tensile strength is big, prevent that the conductor is stolen.

Drawings

Fig. 1 is a schematic structural view of a conventional armored power cable;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic structural view of the middle reinforcement member of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 2 to 4, a high-strength armored power cable includes a sheath 1, a reinforcement 3 and a plurality of conductor units, the reinforcement 3 is disposed in the sheath 1, the cross section of the reinforcement 3 is circular, the conductor units are distributed around the circumference of the reinforcement 3, in this embodiment, four conductor units are uniformly distributed around the reinforcement 3, each conductor unit includes an insulating layer 4 and a conductor 5, the conductor 5 is wrapped in the insulating layer 4, one surface of the insulating layer 4 facing the reinforcement 3 and along the length direction of the insulating layer 4 are fixedly provided with a plurality of conical plastic members 7 at intervals, the conical plastic members 7 are integrally formed with the insulating layer 4, a plurality of conical grooves 8 radially corresponding to the conical plastic members 7 are formed on the cylindrical surface of the reinforcement 3, the conical plastic members 7 on each conductor unit are respectively and correspondingly embedded in the conical grooves 8, and the insulating layer 4 and the sheath 1 are disposed on the cylindrical surface of the reinforcement 3, A filling layer 6 is arranged between the conical plastic part 7 and the reinforcing part 3; the basalt fiber layer 9 is wrapped outside the sheath 1, and the steel mesh 2 is wrapped outside the basalt fiber layer 9.

The two adjacent conical plastic parts 7 on the insulating layer 4 are equally spaced. The reinforcing piece 3 is arranged in the middle of the sheath 1, and the reinforcing piece 3 and the sheath 1 are coaxially arranged.

The steel mesh 2 plays a role of protecting the sheath 1, so that the sheath 1 of the armored power cable is prevented from being damaged in the dragging process. The basalt fiber layer 9 plays roles of heat insulation and fire prevention, and avoids the sheath 1 from being burnt by a fire when the fire happens, so that the conductor 5 is prevented from being burnt by the fire, a good protection effect is achieved, and the service life of the power cable is prolonged.

When a thief wants to steal the conductor 5 in the power cable, the thief will tend to cut off the two ends of the armored power cable on the spot by using a special tool, and then pull the conductor unit in the axial direction. However, during the process of pulling the conductor unit, the thief can not forcibly pull the conductor unit out of the sheath 1 at all because the tapered plastic part 7 on the insulating layer 4 is embedded in the tapered groove 8, so that the tensile strength of the whole power cable is increased, and the thief can not play a role in preventing theft.

In addition, after the power cable laid on the ground is extruded, pressure is transmitted to the conductor unit, and the conical plastic part 7 on the conductor unit is embedded into the conical groove 8, so that the buffer effect is achieved, the pressure is reduced, the conductor 5 in the conductor unit is effectively prevented from being extruded on the reinforcing part 3 due to stress, the conductor 5 is prevented from being deformed due to compression, the electrical property of the conductor is guaranteed to be unchanged, and the power cable has the characteristic of high compressive strength.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 (6)

1. The utility model provides a high strength armoured power cable which characterized in that: the novel cable comprises a sheath (1), a reinforcing part (3) and a plurality of conductor units, wherein the reinforcing part (3) and the plurality of conductor units are arranged in the sheath (1), the conductor units are distributed around the circumference of the reinforcing part (3), each conductor unit comprises an insulating layer (4) and a conductor (5), the conductors (5) are wrapped in the insulating layers (4), one surface, facing the reinforcing part (3), of each insulating layer (4) is fixedly provided with a plurality of conical plastic parts (7) at intervals along the length direction of the corresponding insulating layer (4), the cylindrical surface of each reinforcing part (3) is provided with a plurality of conical grooves (8) radially corresponding to the conical plastic parts (7), the conical plastic parts (7) on each conductor unit are embedded into the conical grooves (8), and filling layers (6) are arranged among the insulating layers (4), the sheath (1), the conical plastic parts (7) and the reinforcing part (3); the basalt fiber layer (9) is wrapped outside the sheath (1), and the steel mesh (2) is wrapped outside the basalt fiber layer (9).

2. A high strength armored power cable in accordance with claim 1, wherein: four conductor units are uniformly distributed around the reinforcing piece (3).

3. A high strength armored power cable in accordance with claim 1, wherein: the conical plastic part (7) and the insulating layer (4) are integrally formed.

4. A high strength armored power cable in accordance with claim 1, wherein: the distance between two adjacent conical plastic parts (7) on the insulating layer (4) is equal.

5. A high strength armored power cable in accordance with claim 1, wherein: the reinforcing piece (3) is arranged in the middle of the sheath (1), and the reinforcing piece (3) and the sheath (1) are coaxially arranged.

6. A high strength armored power cable in accordance with claim 1, wherein: the cross section of the reinforcing piece (3) is circular.

Images