CN217521781U

CN217521781U - Power cable

Info

Publication number: CN217521781U
Application number: CN202221585033.3U
Authority: CN
Inventors: 龙建新; 龙桂英
Original assignee: Guizhou Dingyidayuan Cable Co ltd
Current assignee: Guizhou Dingyidayuan Cable Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-09-30
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a power cable, including the cable body, the cable body comprises multiunit multicore electric wire, the cable body has set gradually iron armour layer, outer shielding layer from outer to interior, the spacing clamp of inner wall fixedly connected with multiunit of the built-in outer shielding layer of cable body, multiunit the multicore electric wire has set gradually aluminium armour layer, inner shielding layer from inside to outside, the outside on iron armour layer, aluminium armour layer all is provided with the insulating cortex of rubber material, the outside that the cable body inner chamber is located multiunit multicore electric wire is filled and is provided with fire-retardant filler. The utility model discloses with aluminium armour layer, the reasonable application in iron armour layer and overall arrangement in current cable body, can also provide powerful support intensity when guaranteeing whole radiating, the practical function is obvious.

Description

Power cable

Technical Field

The utility model relates to a power equipment field especially relates to a power cable.

Background

As is known, an electric power cable is a cable for transmitting or distributing high-power electric power in an electric power system. The electric energy generated by the power station is connected with the power transformation and distribution stations with various voltage levels through overhead transmission lines and power cables, and then is transmitted to each power utilization unit. Compared with other overhead bare wires, the power cable has the advantages of small interference from outside weather, reliability, concealment, less maintenance, durability and capability of being laid in various occasions. However, the power cable is complex in structure and production process and high in cost, and therefore is generally used for power leading-in or leading-out lines of power plants, transformer substations and industrial and mining enterprises, and power transmission and distribution lines crossing rivers, railway stations and urban areas and power lines inside industrial and mining enterprises.

At present, the overall price of a power cable is high due to the fact that copper materials in the power cable are expensive, the cable is protected by an iron armor, eddy currents are easily generated in a magnetic field of an electrified conductor by iron, the cable generates heat, energy loss is serious, at present, a patent with the application number of CN201220521574.X discloses a power cable, the problem of serious heat generation is solved by replacing the traditional iron armor with aluminum materials, but the overall cost of the aluminum materials is high, the strength is low, when the cable is deeply buried, thick soil covers the upper layer, the power cable is prone to bear large soil pressure and deform, normal use is affected, and the overall practicability of the power cable is questioned.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a power cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a power cable, includes the cable body, the cable body comprises multiunit multicore electric wire, the cable body has set gradually iron armour layer, outer shielding layer from outer to interior, the spacing clamp of inner wall fixedly connected with multiunit of the built-in outer shielding layer of cable body, multiunit the multicore electric wire has set gradually aluminium armour layer, inner shielding layer from outer within, the outside on iron armour layer, aluminium armour layer all is provided with the insulating cortex of rubber material, the outside that the cable body inner chamber is located multiunit multicore electric wire is filled and is provided with fire-retardant filler.

Preferably, an opening is formed in the outer side surface of the limiting clamp, and the diameter of the opening is smaller than that of the built-in multi-core wire.

Preferably, the outer wall of the iron armor layer is uniformly provided with a plurality of groups of heat conducting holes in a penetrating mode, and heat conducting fins are further arranged between the iron armor layer and the insulating skin layer on the outer side.

Preferably, the flame-retardant filler is composed of flocculent flame-retardant cotton.

Preferably, the outer shielding layer and the inner shielding layer are formed by weaving metal wires.

Preferably, it is adjacent connect through the connecting rod between the spacing clamp, and the connecting rod is the design of spring telescopic link structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses structural design of the cable body based on current multicore electric wire is constituteed and improve the processing on this basis, establish aluminium armour layer and can realize better heat conduction problem through the outside cover at the multicore electric wire of singly organizing, the opening in the spacing clamp outside of cooperation is favorable to thermal effluvium, and the cable body of constituteing at multiunit multicore electric wire sets up iron armour layer, the heat transfer is realized to cooperation built-in heat conduction hole and conducting strip and dispels the heat, still provide certain intensity on guaranteeing good radiating basis, the cable body that can make provides powerful support when burying deeply, and the connecting rod of the spring telescopic link structure between the spacing clamp of cooperation multiunit can play supplementary shock attenuation, and then guarantee the normal use of cable. To sum up, the utility model discloses with aluminium armour layer, the reasonable application in iron armour layer and overall arrangement in current cable body, can also provide powerful support intensity when guaranteeing whole radiating, its structure sets up rationally, and practical function is obvious, is worth current market and uses widely.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the installation structure of the inner cable in fig. 1 according to the present invention.

In the figure: the cable comprises 1-a multi-core wire, 2-a cable body, 3-a limiting hoop, 301-an opening, 4-flame-retardant filler, 5-an insulating skin layer, 6-an iron armor layer, 601-a heat conduction hole, 602-a heat conduction sheet, 7-an outer shielding layer, 8-an aluminum armor layer, 9-an inner shielding layer and 10-a connecting rod.

Detailed Description

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.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a power cable, including cable body 2, cable body 2 comprises multiunit multicore electric wire 1, cable body 2 has set gradually iron armour layer 6, outer shielding layer 7 from outer to inner, the spacing clamp 3 of inner wall fixedly connected with multiunit of the built-in outer shielding layer 7 of cable body 2, multiunit multicore electric wire 1 has set gradually aluminium armour layer 8 from outer to inner, inner shielding layer 9, iron armour layer 6, the outside on aluminium armour layer 8 all is provided with the insulating cortex 5 of rubber material, the outside that 2 inner chambers of cable body are located multiunit multicore electric wire 1 is filled and is provided with fire-retardant filler 4, connect through connecting rod 10 between the adjacent spacing clamp 3, and connecting rod 10 is the design of spring telescopic link structure.

An opening 301 is formed in the outer side face of the limiting clamp 3, the opening 301 is beneficial to heat dissipation of the multi-core wire 1, and the diameter of the opening 301 is smaller than that of the built-in multi-core wire 1, so that the multi-core wire 1 can be limited. The outer wall of the iron armor layer 6 is uniformly provided with a plurality of groups of heat conducting holes 601 in a penetrating mode, and heat conducting fins 602 are further arranged between the iron armor layer 6 and the insulating skin layer 5 on the outer side. The flame-retardant filler 4 is made of cotton-like flame-retardant cotton, and can also perform buffer protection when the cable body 2 is extruded while playing a flame-retardant effect. The outer shielding layer 7 and the inner shielding layer 9 are formed by weaving metal wires.

The embodiment is as follows: the utility model discloses when using, 2 inner wall intervals of cable body set up the spacing clamp of multiunit 3 and can separately place multiunit multicore electric wire 1, avoid influencing its heat dissipation, wherein the aluminium armour layer 8 in the 1 outside of multicore electric wire can help the heat dissipation of multicore electric wire 1, and the heat can assist its effluvium through opening 301 in the spacing clamp 3 outside, concentrate on the heat transfer of 2 inner chambers of cable body to the heat conduction hole 601 of 6 inner walls of iron armour layer, the heat conduction piece 602 transmission through 6 outer walls of iron armour layer realizes the heat dissipation to the external world. Through using

aluminium armor layer

8 and 6 mixedly of iron armor layer, can also practice thrift certain cost when guaranteeing the radiating effect. In addition, when using, the iron armour layer 6 is located the outside of multiunit multicore electric wire 1, can play strong support protection to whole to behind cable body 2 buries deeply in ground, under the external pressure, the connecting rod 10 of the spring telescopic rod structure between the spacing clamp 3 of multiunit can play supplementary shock attenuation protection effect, and then guarantees holistic normal use.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a power cable, includes cable body (2), and cable body (2) comprises multiunit multicore electric wire (1), its characterized in that, cable body (2) has set gradually iron armour layer (6), outer shielding layer (7) from outer to interior, the spacing clamp of inner wall fixedly connected with multiunit (3) of cable body (2) built-in outer shielding layer (7), multiunit multicore electric wire (1) has set gradually aluminium armour layer (8), inner shielding layer (9) from outer within, the outside of iron armour layer (6), aluminium armour layer (8) all is provided with insulating cortex (5) of rubber material, the outside that cable body (2) inner chamber is located multiunit multicore electric wire (1) is filled and is provided with fire-retardant filler (4).

2. A power cable according to claim 1, characterized in that the outer side of the limiting clamp (3) is provided with an opening (301), and the diameter of the opening (301) is smaller than the diameter of the built-in multi-core wire (1).

3. A power cable according to claim 2, characterized in that a plurality of groups of heat conducting holes (601) are uniformly arranged on the outer wall of the iron armor layer (6) in a penetrating manner, and a heat conducting fin (602) is further arranged between the iron armor layer (6) and the outer insulating sheath (5).

4. A power cable according to claim 3, characterized in that the flame-retardant filler (4) consists of cotton-like flame-retardant cotton.

5. A power cable according to claim 4, characterized in that the outer shield (7) and the inner shield (9) are made of metal wires.

6. A power cable according to claim 5, characterized in that adjacent limiting clamps (3) are connected by a connecting rod (10), and the connecting rod (10) is designed as a telescopic spring rod.