CN212907160U

CN212907160U - Overhead insulated cable

Info

Publication number: CN212907160U
Application number: CN202021320156.5U
Authority: CN
Inventors: 金德彪
Original assignee: Wickray Cable Co ltd
Current assignee: Wickray Cable Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-04-06
Anticipated expiration: 2030-07-08

Abstract

The utility model discloses an overhead insulated cable, including the rubber column, the surface of rubber column is provided with the branch separating tank, and the inboard that divides the separating tank is provided with the cable core, and the surface of rubber column is provided with the protective sheath. The cable core is fixed on the inner side of the separation groove, so that the cable core can be effectively prevented from being dislocated in the using process; the cable core can be protected against friction, water and fire through the protective sleeve; the tensile strength of the cable is improved by the reinforcing core.

Description

Overhead insulated cable

Technical Field

The utility model belongs to the technical field of the cable, specifically be an overhead insulated cable.

Background

The overhead insulated cable generally comprises a metal wire core and a weather-resistant insulating layer, and has superior insulating property compared with a bare conductor, so that the interphase distance can be reduced, the number of circuits on the same pole can be increased, and the occupied space of overhead wires can be saved. Therefore, the cable is widely applied to the power transmission and transformation lines in cities and towns, and can be erected in line channels with narrow spaces particularly in the areas with dense and busy population.

The utility model provides a fire protection device, including aerial cable, insulating layer and protective sheath, the aerial cable is equipped with the overhead conductor of insulating layer and protective sheath, be the multicore structure mostly, but the structure of multicore leads to each cable core position to take place the dislocation easily in the use, the stability of aerial insulated cable inner structure has been reduced, and the performance of protective sheath is relatively poor, aerial insulated cable passes through city street both sides and residential quarter, in case when accident such as conflagration takes place, because aerial insulated cable's insulating layer adopts crosslinked polyethylene, crosslinked polyethylene is the inflammables, flame easily stretches, and produce great smog during the burning, lead to the fact certain threat to resident's the security of the lives and property and environment along the line.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overhead insulated cable to solve the poor problem of cable construction temperature nature.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an overhead insulated cable, includes the rubber column, the surface of rubber column is provided with the separation groove, the inboard in separation groove is provided with the cable core, separates the cable core through the separation groove and comes, avoids the friction between the cable core, the surface of rubber column is provided with the protective sheath, through protective sheath protection cable.

Preferably, the cable core includes sinle silk, insulating layer and shielding layer, and the inside magnesium hydroxide fire retardant that adds of insulating layer can reduce the insulating layer and burn and produce smog, and the insulating layer makes insulation protection to the sinle silk, and the shielding layer is used for shielding external disturbance, and the shielding layer bonds in the inboard of dividing the cell.

Preferably, the protective sheath includes insulating layer, fire-retardant layer, waterproof layer and wearing layer, carries out wear-resisting, waterproof, fire-retardant, thermal-insulated protection to the cable through the protective sheath, and the insulating layer comprises the asbestos, and fire-retardant layer is made by low smoke and zero halogen flame retardant polyolefin, and the surface at the insulating layer is fixed through the mode of bonding in the outside of fire-retardant level in the insulating layer, and the waterproof layer comprises melamine, and the waterproof layer is located the surface on fire-retardant layer, fixes the surface at fire-retardant layer through the bonding mode, and the insulating layer bonds on the surface of rubber.

Preferably, the inner sides of the rubber columns are symmetrically provided with through holes, reinforcing cores are inserted into the inner sides of the through holes, and the tensile strength of the cable is improved due to the arrangement of the reinforcing cores.

Preferably, the through holes are arranged in parallel with the center of the rubber column, the through holes are parallel to the rubber column, and the strength of the cable is increased through the reinforcing cores on the inner sides of the through holes.

Preferably, the number of the through holes is 3, and the three through holes are symmetrically distributed, so that the reinforcing core is uniformly stressed due to the symmetrical distribution.

Compared with the prior art, the beneficial effects of the utility model are that: the cable core is fixed on the inner side of the separation groove, so that the cable core can be effectively prevented from being dislocated in the using process; the cable core can be protected against friction, water and fire through the protective sleeve; the tensile strength of the cable is improved by the reinforcing core.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the protective sheath of the present invention;

figure 3 is the utility model discloses a cable core section schematic diagram.

In the figure: 1 rubber column, 11 separating grooves, 12 through holes, 13 reinforcing cores, 2 cable cores, 21 wire cores, 22 insulating layers, 23 shielding layers, 3 protective sleeves, 31 heat insulating layers, 32 flame retardant layers, 33 waterproof layers and 34 wear-resistant layers.

Detailed Description

Referring to fig. 1, an overhead insulated cable includes a rubber column 1, a separation groove 11 is formed in a surface of the rubber column 1, a cable core 2 is disposed inside the separation groove 11, the cable core 2 is separated by the separation groove 11 to avoid friction between the cable cores 2, a protective sleeve 3 is disposed on the surface of the rubber column 1, and the cable is protected by the protective sleeve 3.

Referring to fig. 3, the cable core 2 includes a core 21, an insulating layer 22 and a shielding layer 23, and the shielding layer 23 is adhered to the inner side of the separation groove 11.

Referring to fig. 2, the protective sheath 3 includes a heat insulating layer 31, a flame retardant layer 32, a waterproof layer 33 and a wear layer 34, the heat insulating layer 31 is made of asbestos, the flame retardant layer 32 is made of low smoke halogen-free flame retardant polyolefin, the flame retardant layer 32 is located on the outer side of the heat insulating layer 31 and fixed on the surface of the heat insulating layer 31 in an adhesive manner, the waterproof layer 33 is made of melamine, the waterproof layer 33 is located on the surface of the flame retardant layer 32 and fixed on the surface of the flame retardant layer 32 in an adhesive manner, and the heat insulating layer 31 is adhered to the surface.

Referring to fig. 1, through holes 12 are symmetrically formed in the inner side of the rubber column 1, and reinforcing cores 13 are inserted into the inner sides of the through holes 12, so that the tensile strength of the cable is improved due to the arrangement of the reinforcing cores 13.

Referring to fig. 1, the through hole 12 is disposed parallel to the center of the rubber column 1, the through hole 12 is parallel to the rubber column 1, and the strength of the cable is increased by the reinforcing core 13 inside the through hole 12.

Referring to fig. 1, the number of the through holes 12 is 3, and the three through holes 12 are symmetrically distributed, so that the reinforcing core 13 is uniformly stressed.

The working principle of the scheme is as follows: the cable core 2 is fixed on the inner side of the separation groove 11 through adhesion prevention, and the protective sleeve 3 is adhered on the outer side of the rubber column 1, so that the cable core 2 is fixed on the inner side of the separation groove 11, and the dislocation of the cable core 2 in the use process can be effectively prevented; the protective sleeve 3 consists of a heat insulation layer 31, a flame retardant layer 32, a waterproof layer 33 and a wear-resistant layer 34, and the cable core 2 can be protected against friction, water, fire, heat and the like through the protective sleeve 3, so that the cable core 2 can be effectively prevented from being damaged due to external factors; because the three through holes 12 of the voice communication rubber column 1 are inserted with the reinforcing cores 13, the tensile strength of the cable is improved by the arrangement of the reinforcing cores 13.

Claims

1. An overhead insulated cable, includes rubber column (1), its characterized in that: the surface of rubber column (1) is provided with separation groove (11), the inboard of separation groove (11) is provided with cable core (2), the surface of rubber column (1) is provided with protective sheath (3), cable core (2) are including sinle silk (21), insulating layer (22) and shielding layer (23), shielding layer (23) bond the inboard at separation groove (11), protective sheath (3) are including insulating layer (31), fire-retardant layer (32), waterproof layer (33) and wearing layer (34), insulating layer (31) bond the surface at rubber column (1), the inboard symmetry of rubber column (1) is provided with perforation (12), the inboard of perforation (12) is pegged graft and is had reinforced core (13), perforation (12) and rubber column (1) center parallel arrangement.

2. An overhead insulated cable according to claim 1, characterized in that: the number of the through holes (12) is 3, and the three through holes (12) are symmetrically distributed.