CN219759244U - Waterproof power cable of anti torsion of tensile - Google Patents

Abstract

The utility model discloses a tensile and torsion-resistant waterproof power cable which comprises an outer sheath, an armor layer, a waterproof layer, an outer shielding layer, a wrapping tape layer and a filling layer, wherein the outer sheath is made of polyethylene, the waterproof layer is made of an aluminum-plastic composite tape in a longitudinally wrapping mode, the wrapping tape layer is made of a water-swelling composite water-blocking tape, a central framework and six cable cores are arranged in the filling layer, each cable core comprises a conductor, an insulating layer, an inner shielding layer and an inner sheath, the cross section of the central framework and the cross section of the inner sheath are both regular hexagons, and an anti-pulling rope is arranged in the central framework. The cable has the central skeleton of a regular hexagon, and plays a good role in supporting and spacing cable cores by matching with the filling blocks, so that abrasion among the cable cores is reduced when the cable is twisted, the tensile property of the cable is improved by arranging the anti-pulling rope, and the waterproof layer, the wrapping belt layer and the outer sheath are arranged, so that the waterproof effect of the cable is good.

Description

Waterproof power cable of anti torsion of tensile

Technical Field

The utility model relates to the field of cables, in particular to a waterproof power cable with tensile strength and torsion resistance.

Background

With the rapid development of national economy, the specific gravity of cables in power lines is gradually increased, and the power cables are cables for transmitting and distributing electric energy and are commonly used for underground power grids of cities, outgoing lines of power stations, power supply inside industrial and mining enterprises, underwater power transmission lines and the like.

The waterproof power cable provided by the prior authorized publication number CN201107796 is formed by twisting three single-core waterproof cables to provide radial waterproof performance, but the overall waterproof performance of the power cable is still weak, the cable is difficult to meet the requirements of people on waterproof performance for long-term laying in a humid environment or for frequent rainy areas, moisture can enter the cable, the use of the cable is finally affected, the torsion resistance and the tensile performance of the cable are weak, when the cable is twisted, the abrasion among each cable core is serious, when the cable is subjected to larger tensile force, the cable cores are likely to be broken, and the overall service life of the cable is affected.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a power cable.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a power cable, includes the cable body, the cable body includes from outer oversheath, armor, waterproof layer, outer shielding layer, band layer and the filling layer that sets gradually in to, the oversheath adopts the polyethylene oversheath, the waterproof layer adopts the aluminium plastic composite tape to indulge the package and forms, the band layer adopts the compound water blocking tape that meets the water inflation, the filling layer is filled by a plurality of filling blocks and is formed, be provided with a central skeleton and a plurality of cable core in the filling layer, the cable core includes conductor, insulating layer, interior shielding layer and the inner sheath that sets gradually from interior to exterior, the cable core has six the cable core surrounds central skeleton, the cross-section of central skeleton with the cross-section of inner sheath is regular hexagon, six the cable core is located respectively six lateral surface departments of central skeleton, the through-hole has been seted up to the center department of central skeleton, be provided with anti-pull rope in the through-hole.

Preferably, a plurality of cable cores are distributed in an annular equidistant manner;

so that the overall structure of the cable is more stable.

Preferably, the cable body has a circular structure;

so that the cable is compact.

Preferably, the side length of the cable core is smaller than the side length of the central framework;

thereby play better supporting role to the cable core, the torsion resistance of cable is good.

Preferably, the filling block comprises an arc-shaped part and a protruding partition plate, the arc-shaped part is abutted with the wrapping belt layer, and one protruding partition plate is arranged between any two adjacent cable cores;

therefore, an interval effect is achieved between two adjacent cable cores, so that abrasion among the cable cores is reduced when the cable is twisted.

Preferably, the inner shielding layer is formed by wrapping copper strips;

preferably, the outer shielding layer is a tinned copper wire braiding layer;

so that the cable has better shielding performance.

Compared with the prior art, the utility model has the following beneficial effects:

1. the cable has the center skeleton of regular hexagon, cooperates the filler block, plays fine support and interval effect to six regular hexagon's cable core for the cable reduces the wearing and tearing between each cable core when being twisted.

2. The center of the center framework is provided with a through hole, and an anti-pulling rope is arranged in the through hole, so that the tensile property of the cable is improved.

3. The waterproof layer and the waterproof layer with waterproof and water-blocking effects and the outer sheath are arranged, so that the waterproof effect of the cable is good.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the overall structure of the present utility model;

reference numerals illustrate: 1. an outer sheath; 2. an armor layer; 3. a waterproof layer; 4. an outer shielding layer; 5. a tape layer; 6. filling blocks; 6.1, arc-shaped part; 6.2, protruding the baffle; 7. a central skeleton; 7.1, through holes; 8. a cable core; 8.1, conductors; 8.2, an insulating layer; 8.3, an inner shielding layer; 8.4, an inner sheath; 9. and (5) resisting the pull rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a waterproof power cable as shown in the figure, which comprises a cable body, wherein the cable body comprises an outer sheath 1, an armor layer 2, a waterproof layer 3, an outer shielding layer 4, a wrapping tape layer 5 and a filling layer which are sequentially arranged from outside to inside, the outer sheath 1 adopts a polyethylene outer sheath, the waterproof layer 3 adopts an aluminum-plastic composite tape to longitudinally wrap, the wrapping tape layer 5 adopts a water-swelling composite water blocking tape, the filling layer is filled by a plurality of filling blocks 6, a central framework 7 and a plurality of cable cores 8 are arranged in the filling layer, each cable core 8 comprises a conductor 8.1, an insulating layer 8.2, an inner shielding layer 8.3 and an inner sheath 8.4 which are sequentially arranged from inside to outside, each cable core 8 is provided with six, the sections of the central framework 7 and the cross section of the inner sheath 8.4 are all regular hexagons, the six cable cores 8 are respectively positioned at six outer side surfaces of the central framework 7, and the central framework 7.1 is provided with a through hole 9, and the through hole 9 is formed in the central framework 7.1.

The cable cores 8 are distributed in an annular equidistant manner; the cable body is of a circular structure; the side length of the cable core 8 is smaller than that of the central framework 7; the filling block 6 comprises an arc-shaped part 6.1 and a protruding partition plate 6.2, the arc-shaped part 6.1 is abutted with the wrapping band layer 5, and one protruding partition plate 6.2 is arranged between any two adjacent cable cores 8; the inner shielding layer 8.3 is formed by wrapping copper strips; the outer shielding layer 4 is a tinned copper wire weaving layer.

Working principle: the cable disclosed by the utility model has the advantages that the cable is provided with the center skeleton of the regular hexagon, the six cable cores of the regular hexagon are respectively positioned at six side surfaces of the center skeleton, the side length of each cable core is smaller than that of the center skeleton, and the filling blocks are matched, so that the six cable cores are well supported and spaced, the abrasion among the cable cores is reduced when the cable is twisted, the center of the center skeleton is provided with the through hole, and the anti-pulling rope is arranged in the through hole, so that the tensile property of the cable is improved, and the waterproof layer, the wrapping belt layer with waterproof and water-blocking effects and the outer sheath are arranged, so that the waterproof effect of the cable is good.

While the utility model has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the utility model as defined in the following claims.

Claims (7)

1. The utility model provides a waterproof power cable of tensile anti torsion, its characterized in that, includes the cable body, the cable body includes oversheath (1), armor (2), waterproof layer (3), outer shielding layer (4), band layer (5) and filling layer that set gradually in to from the outside, oversheath (1) adopts the polyethylene oversheath, waterproof layer (3) adopt plastic-aluminum composite tape to indulge the package and form, band layer (5) adopt the complex water blocking tape that meets the water inflation, the filling layer is filled by a plurality of filling pieces (6) and is formed, be provided with a central skeleton (7) and a plurality of cable core (8) in the filling layer, cable core (8) are including conductor (8.1), insulating layer (8.2), inner shielding layer (8.3) and inner sheath (8.4) that set gradually from inside to outside, cable core (8) have six cable core (8) surround central skeleton (7), the cross-section of central skeleton (7) and inner sheath (8.4) adopt six cable core (7) to be six, center (7) are located six through-hole (7) are offered respectively.

2. The waterproof power cable of claim 1, wherein a plurality of said cores (8) are distributed at equal intervals in a ring shape.

3. The tensile, torsion resistant, waterproof power cable of claim 1, wherein the cable body is of circular configuration.

4. The tensile torsion-resistant waterproof power cable according to claim 1, wherein the side length of the cable core (8) is smaller than the side length of the central skeleton (7).

5. The waterproof power cable of claim 4, wherein the filler block (6) comprises an arc-shaped portion (6.1) and a protruding partition (6.2), the arc-shaped portion (6.1) being in abutment with the taping layer (5), one protruding partition (6.2) being provided between any two adjacent cable cores (8).

6. The tensile, torsion-resistant, waterproof power cable according to claim 1, characterized in that the inner shielding layer (8.3) is copper tape wrapped.

7. The tensile torsion-resistant waterproof power cable according to claim 1, wherein the outer shielding layer (4) is a tinned copper wire braid.