CN213070688U

CN213070688U - Rain and snow prevention parallel bundling low-voltage cable

Info

Publication number: CN213070688U
Application number: CN202021308551.1U
Authority: CN
Inventors: 王正取
Original assignee: YUNNAN YUNLAN CABLE (GROUP) CO Ltd
Current assignee: YUNNAN YUNLAN CABLE (GROUP) CO Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-27
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a rain and snow prevention parallel bundling low-voltage cable, which comprises a plurality of cable cores, wherein the adjacent cable cores are connected through connecting ribs; the single cable core sequentially comprises a core layer and a tape insulating layer from inside to outside, and the cross section of the cable core is circular; the outer part of the tape insulating layer is coated with a protective layer; the wire core layer comprises a plurality of wire cores, and a core insulating layer is coated outside each wire core; the cross section of the protective layer is in an elliptical shape; a first waterproof layer is filled in a gap between the insulating layer and the protective layer; the cable core is provided with three, and three the cable core is isosceles triangle and arranges. The utility model discloses to sleet weather, block water, block snow the effect better.

Description

Rain and snow prevention parallel bundling low-voltage cable

Technical Field

The utility model relates to the technical field of cables, in particular to rain-proof snow parallel low voltage cable tied in a bundle.

Background

The parallel bundling low-voltage cable is a product which is mainly popularized and applied in rural power grid construction of a national electric power company. The cable is in a cluster-shaped combination, the tensile breaking force is multiplied compared with that of a single line, single-phase line breakage accidents are reduced, the operation safety coefficient is improved, the effects of lightning protection, electricity stealing prevention and electricity leakage prevention are obviously improved, and the cable is convenient to construct when being installed and laid and has larger advantages compared with the common overhead insulated cable.

At present, many urban low-voltage power grids begin to adopt parallel bundled overhead insulated cables and achieve good effects. However, in the parallel bunched cable, all the insulated wire cores are arranged in a straight line in parallel, and the wire cores are connected by adopting the connecting ribs, so that the spread area is larger than that of a single cable, and the phenomena of water accumulation and snow accumulation are easily caused in rainy and snowy weather. The long-term existence of accumulated water and accumulated snow not only easily causes the continuous reduction of the insulation quality of the cable, but also causes frequent maintenance of the overhead line and influences the normal operation of the low-voltage line.

In the prior art, the rain and snow prevention parallel bundling low-voltage cable easily generates water accumulation and snow accumulation in rain and snow weather, plays a certain water and snow blocking effect, but the water and snow blocking effect is still not good enough and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a rain-proof snow parallel low tension cable tied in a bundle, to sleet weather, block water, hinder snow effect better.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a rain and snow prevention parallel bundling low-voltage cable comprises a plurality of cable cores, wherein adjacent cable cores are connected through connecting ribs; the single cable core sequentially comprises a core layer and a tape insulating layer from inside to outside, and the cross section of the cable core is circular; the outer part of the tape insulating layer is coated with a protective layer; the wire core layer comprises a plurality of wire cores, and a core insulating layer is coated outside each wire core; the cross section of the protective layer is in an elliptical shape; a first waterproof layer is filled in a gap between the insulating layer and the protective layer; the cable core is provided with three, and three the cable core is isosceles triangle and arranges.

Furthermore, a second waterproof layer is arranged at the gap between the wire cores.

Furthermore, the outer surface of the protective layer is provided with a phase sequence mark.

Further, the first waterproof layer is a water-blocking rope; the second waterproof layer is water-blocking powder.

Further, the protective layer sequentially comprises an inner liner layer, a metal armor layer and an outer tegument layer from inside to outside.

The utility model has the advantages that:

(1) the utility model discloses in because the outside of cable is equipped with the cross-section and for oval shape protective layer, adopt this design, compare in the parallel low tension cable tied in a bundle among the prior art, at sleet weather, the cable is difficult to ponding, snow, makes it have better water-proof effects.

(2) The utility model provides a parallel low tension cable tied in a bundle, the design of first waterproof layer and second waterproof layer can play abundant effect of blocking water.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

In the figure, 1-cable core, 2-tie bar, 3-first waterproof layer, 4-second waterproof layer, 100-core, 101-core insulation layer, 10-core layer, 11-tape insulation layer, 12-protective layer, 120-inner liner layer, 121-metal armor layer, 122-outer layer.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the rain and snow prevention parallel bundling low-voltage cable comprises a plurality of cable cores 1, wherein adjacent cable cores 1 are connected through connecting ribs 2; the single cable core 1 sequentially comprises a core layer 10 and an insulating layer 11 from inside to outside, and the cross section of the cable core 1 is circular; the outside of the belt insulating layer 11 is coated with a protective layer 12; the wire core layer 10 comprises a plurality of wire cores 100, and a core insulating layer 101 is coated outside each wire core 100; the cross section of the protective layer 12 is in an elliptical shape; a first waterproof layer 3 is filled in a gap between the insulating layer 11 and the protective layer 12; the cable core 1 is provided with three, and three the cable core 1 is isosceles triangle and arranges. The protective layer 12 protects the tape insulating layer 11 from external damage and reduces the intrusion of moisture during transportation, application, and use.

In particular, the protective layer 12 is designed with an oval cross section, so that in rainy and snowy weather, on one hand, rain and snow are difficult to stay outside the parallel bundled low-voltage cables; even if on the other hand has a small part sleet to stop at the top of parallel low-voltage cable tied in a bundle, because the inside cross-section of cooperation protective layer 12 is the cable core 1 of circular form, the distance of cable core 1 and the long axle head of protective layer 12 is far away, and the first waterproof layer 3 of taking the clearance department between insulating layer 11 and the protective layer 12 to fill is thicker, therefore can play better effect of blocking water, compares the parallel low-voltage cable tied in a bundle of other shape designs to possess better block water, block snow the effect. It should be noted that, the utility model provides a when the parallel low voltage cable tied in a bundle of rain-proof snow is installed and is used, cable core 1 keeps the installation of standing vertically, blocks water, hinders snow effect best.

Further, in order to further improve the water and snow blocking effect, a second waterproof layer 4 is arranged in the gap between the wire cores 100.

Further, in order to avoid the wire connection error and the danger, the outer surface of the protective layer 12 is provided with a phase sequence mark 5. The phase sequence mark 5 may be provided with a projection or a notch on the outer surface of the protective layer 12, and further, as provided in fig. 1, a projection-like phase sequence mark 5 is preferable.

Further, the first waterproof layer 3 is a water-blocking rope; the second waterproof layer 4 is water-blocking powder.

Further, the protective layer 12 includes an inner lining layer 120, a metal armor layer 121 and an outer layer 122 from inside to outside.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a rain-proof snow parallel low tension cable tied in a bundle which characterized in that: the cable comprises a plurality of cable cores (1), wherein adjacent cable cores (1) are connected through connecting ribs (2); the single cable core (1) sequentially comprises a core layer (10) and a tape insulating layer (11) from inside to outside, and the cross section of the cable core (1) is circular; the outside of the belt insulating layer (11) is coated with a protective layer (12); the wire core layer (10) comprises a plurality of wire cores (100), and a core insulating layer (101) is coated outside each single wire core (100); the cross section of the protective layer (12) is in an elliptical shape; a first waterproof layer (3) is filled in a gap between the insulating layer (11) and the protective layer (12); the cable core (1) is provided with three, and three the cable core (1) is isosceles triangle and arranges.

2. The rain and snow resistant parallel bundling low-voltage cable according to claim 1, characterized in that: and a second waterproof layer (4) is arranged at the gap between the wire cores (100).

3. The rain and snow resistant parallel bundling low-voltage cable according to claim 1, characterized in that: the outer surface of the protective layer (12) is provided with a phase sequence mark (5).

4. The rain and snow prevention parallel bundling low-voltage cable according to claim 2, characterized in that: the first waterproof layer (3) is a water-blocking rope; the second waterproof layer (4) is made of water-blocking powder.

5. The rain and snow resistant parallel bundling low-voltage cable according to claim 1, characterized in that: the protective layer (12) sequentially comprises an inner lining layer (120), a metal armor layer (121) and an outer covering layer (122) from inside to outside.