CN211265092U

CN211265092U - Anti-extrusion power cable

Info

Publication number: CN211265092U
Application number: CN201922501652.4U
Authority: CN
Inventors: 唐延林; 欧阳兵; 程庭义
Original assignee: Anhui Guotong Electric Power Construction Co ltd
Current assignee: Anhui Guotong Electric Power Construction Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-14
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an anti extrusion power cable, including the restrictive coating, the restrictive coating parcel has many cable cores, and the restrictive coating is inside to be provided with a plurality of support frames, support frame between adjacent, and the cooperation of pegging graft between its pipe portion and the pole portion, the circumference side of pipe portion evenly is provided with a plurality of radial divided spacers with the cable core, and the opposite side of spacer is provided with the backing sheet that is the arcuation. The spacer not only plays the effect of separating the cable core, still has the effect of the inside radial support of cable simultaneously, and a plurality of support frame intercombination form complete support part, support frame atress during external force extrusion cable to protect inside cable core, prevent the effect of direct extrusion cable core, the spacer of support frame effectively prevents the direct contact effect between the cable core simultaneously, prevents that the cable core extrusion is close to the too big problem of local current that leads to.

Description

Anti-extrusion power cable

Technical Field

The utility model belongs to the technical field of power cable, especially, relate to an anti extrusion power cable.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

In the follow-up use after laying, the cable diversion processing is often dragged in order to adjust the position and be convenient for lead to the assigned position, and the cable meets with the driving of mechanical external force such as bending, torsion easily, leads to the inside extrusion of cable. And current cable is mostly laid in the underground, bears the gravity compression effect from earth and earth surface building, car etc. and the cable causes regional deformation easily in long-term use, extrudes inside cable core, and the final result that leads to has sheath extrusion back surface tension grow and easy fracture, and inside cable core extrudees each other and leads to local current too big, and calorific capacity is big, and the heat dissipation receives the scheduling problem of influence. Therefore, the utility model discloses it is main to solve because current power cable does not have perfect anti extrusion function, leads to cable sheath extrusion fracture and the cable core extrusion problem of generating heat easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti extrusion power cable, what mainly solve is because current power cable does not have perfect anti extrusion function, leads to cable sheath extrusion fracture and cable core extrusion problem that generates heat easily.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

an anti-extrusion power cable comprises a sheath layer, wherein a plurality of cable cores are wrapped on the sheath layer;

the sheath layer is internally provided with a plurality of support frames, each support frame comprises a pipe part and a rod part which are integrally connected, and the pipe parts and the rod parts are coaxially arranged with the sheath layer;

adjacent support frame, the cooperation of pegging graft between its pipe portion and the pole portion, the circumference side of pipe portion evenly is provided with a plurality of spacers with the radial spaced of cable core, spacer one side and the outside body coupling of pipe portion, the opposite side of spacer is provided with the backing sheet that is the arcuation, the opposite side of spacer and the interior arc side body coupling of backing sheet.

Further, the outer side wall of the sheath layer is corrugated.

Further, a non-woven fabric layer is bonded on the inner side of the sheath layer.

Further, the anti-extrusion power cable comprises a bare copper stranded wire, a fire-resistant mica tape and an insulating layer from inside to outside.

The utility model discloses following beneficial effect has:

(1) the spacer not only plays the effect of separating the cable core, still has the effect of the inside radial support of cable simultaneously, and a plurality of support frame intercombination form complete support part, support frame atress during external force extrusion cable to protect inside cable core, prevent the effect of direct extrusion cable core, the spacer of support frame effectively prevents the direct contact effect between the cable core simultaneously, prevents that the cable core extrusion is close to the too big problem of local current that leads to.

(2) The grafting cooperation between the support frame has mutual gliding effect simultaneously, and when the cable is crooked, through the slip between the support frame after the axial stretch, the too big problem of restrictive coating surface tension that prevents the crooked lead to of cable small-angle.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1: the utility model discloses cross-sectional structure schematic diagram.

FIG. 2: the utility model discloses support frame structure picture.

FIG. 3: the utility model discloses restrictive coating structure picture.

In the drawings, the components represented by the respective reference numerals are listed below:

sheath layer 1, cable core 2, support frame 3, pipe portion 31, pole portion 32, spacer 33, backing sheet 34, non-woven fabrics layer 11, naked copper stranded wire 21, fire resistant mica tape 22, insulating layer 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements 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.

As shown in fig. 1 and 2: an anti-extrusion power cable comprises a sheath layer 1, wherein a plurality of cable cores 2 are wrapped on the sheath layer 1;

a plurality of support frames 3 are arranged in the sheath layer 1, each support frame 3 comprises a pipe part 31 and a rod part 32 which are integrally connected, and the pipe parts 31 and the rod parts 32 are coaxially arranged with the sheath layer 1; the rod part and the pipe part are both made of metal, wherein the rod part is made of flexible metal, such as a steel wire structure, and the caliber is 3-6 mm.

Adjacent support frame 3 between, the cooperation of pegging graft between its pipe portion 31 and pole portion 32, the support frame passes through the cooperation of pegging graft of pipe portion and pole portion and extends the range along the axis of cable, constitutes an overall structure, wherein can sliding fit each other after pipe portion and pole portion are pegged graft, and the cable assembly is the completion of pegging graft the support frame one by one when timing. The circumference side of pipe portion 31 evenly is provided with a plurality of septa 33 with the radial separation of cable core 2, septa 33 one side and the outside of pipe portion 31 body coupling, the opposite side of septa 33 is provided with and is the backing sheet 34 of arcuation, the opposite side of septa 33 and the inner arc side body coupling of backing sheet 34. The spacer plays a role of separating the cable core, and has a role of radially supporting the inside of the cable, the inside of the spacer is supported on the pipe part, a supporting piece for reducing pressure intensity is arranged on the contact side of the outside of the spacer and the sheath, the projection of the supporting piece in the axial direction of the cable is in a minor arc shape, and the arc-shaped surface of the supporting piece and the arc-shaped surface of the sheath are in integral transition.

The utility model discloses a complete support section is formed in a plurality of support frame intercombination, support frame atress during external force extrusion cable to protect inside cable core, prevent the effect of direct extrusion cable core, the spacer of support frame effectively prevents the direct contact effect between the cable core simultaneously, prevents that the cable core extrusion is close to the too big problem of local current that leads to.

The grafting cooperation between the support frame has mutual gliding effect simultaneously, and when the cable is crooked, through the slip between the support frame after the axial stretch, the too big problem of restrictive coating surface tension that prevents the crooked lead to of cable small-angle.

As shown in fig. 3: the outer side wall of the sheath layer 1 is corrugated. The corrugated outer side wall of the sheath layer is beneficial to improving the looseness, provides a buffer space when the sheath layer is bent, and reduces the possibility of crack generation.

As shown in fig. 1: and a non-woven fabric layer 11 is bonded on the inner side of the sheath layer 1. The non-woven fabric layer has a smaller friction coefficient, small-amplitude sliding is facilitated on the side where the supporting sheet is attached, and meanwhile the non-woven fabric layer can enhance the toughness of the cable.

As shown in fig. 1: the cable core 2 comprises a bare copper stranded wire 21, a fire-resistant mica tape 22 and an insulating layer 23 from inside to outside in sequence.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-extrusion power cable comprises a sheath layer (1), wherein a plurality of cable cores (2) are wrapped on the sheath layer (1); the method is characterized in that:

a plurality of supporting frames (3) are arranged in the sheath layer (1), each supporting frame (3) comprises a pipe part (31) and a rod part (32) which are integrally connected, and the pipe parts (31) and the rod parts (32) are coaxially arranged with the sheath layer (1);

support frame (3) between adjacent, the cooperation of pegging graft between its pipe portion (31) and pole portion (32), the circumference side of pipe portion (31) evenly is provided with a plurality ofly with radial divided spacer (33) of cable core (2), spacer (33) one side and pipe portion (31) outside body coupling, the opposite side of spacer (33) is provided with and is arc-shaped backing sheet (34), the opposite side of spacer (33) and the inner arc side body coupling of backing sheet (34).

2. A crush-resistant power cable as claimed in claim 1, wherein: the outer side wall of the sheath layer (1) is corrugated.

3. A crush-resistant power cable as claimed in claim 1, wherein: and a non-woven fabric layer (11) is bonded on the inner side of the sheath layer (1).

4. A crush-resistant power cable as claimed in claim 1, wherein: the cable core (2) comprises a bare copper stranded wire (21), a fire-resistant mica tape (22) and an insulating layer (23) from inside to outside in sequence.