CN220984210U

CN220984210U - Outdoor weather-proof pressure-bearing power cable

Info

Publication number: CN220984210U
Application number: CN202322618146.XU
Authority: CN
Inventors: 马嘉旭; 王志辉; 刘文志; 赵迪; 江和海; 戴彦雍; 郑焕铭
Original assignee: Guangzhou Nanyang Cable Group Co ltd
Current assignee: Guangzhou Nanyang Cable Group Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-05-17
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to the technical field of cables, and discloses an outdoor weather-proof pressure-bearing power cable, which comprises a conductor, wherein an insulating layer is wrapped outside the conductor to form a core wire; distributing the three core wires in a 120-degree angle by the same axis, and arranging an elasticity enhancing core on the axis; the core wire is externally covered with a wrapping layer, and a filler is arranged between the core wire and the elastic reinforcing core in the wrapping layer; the metal shielding layer is wrapped outside the wrapping layer, the isolating layer is wrapped outside the metal shielding layer, the buffer layer is wrapped outside the isolating layer, the metal reinforcing layer is wrapped outside the buffer layer, and the sheath layer is wrapped outside the metal reinforcing layer; the outdoor weather-resistant pressure-bearing power cable prepared by the utility model has excellent outdoor weather resistance, so that the service life of the power cable is greatly prolonged.

Description

Outdoor weather-proof pressure-bearing power cable

Technical Field

The utility model relates to the technical field of cables, in particular to an outdoor weather-proof pressure-bearing power cable.

Background

With the continuous expansion of the total amount of economy, the rapid expansion of urban population, the construction of the infrastructure greatly limits the economic development of large and extra-large cities, and the construction of the infrastructure is not separated from the application of the power cable.

The power cable is a cable for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station outgoing lines, power supply in industrial and mining enterprises and power transmission lines under sea water passing through the river, wherein the proportion of the cable in the power lines is gradually increasing, and the power cable is a cable product for transmitting and distributing high-power electric energy in a main line of a power system.

When the power cable is used in an outdoor environment, the cable is tested because the outdoor environment has various severe environments such as biting of rats, insects and ants, irradiation of ultraviolet rays, invasion of water and fire and the like, so that the performance requirement of the cable arranged in the outdoor environment is high, and the traditional cable is generally provided with a plurality of protective layers, so that invasion of water and fire insects and ants is isolated.

Based on the above, we propose an outdoor weather-proof pressure-bearing power cable, which is hoped to solve the defects in the prior art.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an outdoor weather-proof pressure-bearing power cable.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an outdoor weather-proof pressure-bearing power cable comprises a conductor, wherein an insulating layer is wrapped outside the conductor to form a core wire;

Distributing the three core wires in a 120-degree angle by the same axis, and arranging an elasticity enhancing core on the axis;

The core wire is externally covered with a wrapping layer, and a filler is arranged between the core wire and the elastic reinforcing core in the wrapping layer;

The metal shielding layer is wrapped outside the wrapping layer, the isolating layer is wrapped outside the metal shielding layer, the buffer layer is wrapped outside the isolating layer, the metal reinforcing layer is wrapped outside the buffer layer, and the sheath layer is wrapped outside the metal reinforcing layer.

As a further technical scheme, a fiber core is arranged in the inner center of the elastic reinforced core.

As a further technical scheme, the fiber core is a high-strength resin fiber strand.

As a further technical scheme, the outer circumference of the elasticity enhancing core is uniformly distributed with three bulges 1.

As a further technical scheme, the insulating layer is provided with a clamping groove.

As a further technical scheme, the bulges are matched with the clamping grooves, and the bulges distributed on the elastic reinforcing cores are respectively clamped into the clamping grooves of the three insulating layers.

As a further technical scheme, the metal shielding layer is formed by tightly wrapping copper wires on the surface of the wrapping layer in sequence.

As a further technical scheme, the isolating layer is made of high-density polyethylene material;

The buffer layer is made of a chemical cross-linked polyethylene foam material;

the metal reinforcing layer is formed by weaving a high-strength glass fiber mesh;

The sheath layer is made of weather-resistant polyolefin materials.

(III) beneficial effects

Compared with the prior art, the utility model provides an outdoor weather-proof pressure-bearing power cable, which has the following beneficial effects:

The outdoor weather-resistant pressure-bearing power cable prepared by the utility model has excellent outdoor weather resistance, so that the service life of the power cable is greatly prolonged, meanwhile, the outdoor weather-resistant pressure-bearing power cable has excellent pressure-bearing performance, the pressure-bearing performance of the power cable can be improved, the tensile performance of the power cable can be improved, the application field of the power cable is further widened, the power cable can be applied to a plurality of different occasions, and the application performance is safer and more reliable.

Drawings

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

FIG. 2 is a block diagram of an elastic reinforcing core of the present utility model;

FIG. 3 is a diagram of the structure of an insulating layer according to the present utility model;

FIG. 4 is a diagram showing the combination of the elastic reinforcing core and the insulating layer according to the present utility model;

fig. 5 is a diagram of the structure of the metal shielding layer of the present utility model.

Detailed Description

The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

An outdoor weather-proof pressure-bearing power cable comprises a conductor 1, wherein an insulating layer 2 is coated outside the conductor 1 to form a core wire; the conductor can be formed by twisting or pressing aluminum or copper monofilaments with good electric conduction according to the requirement, and is a main carrier for power transmission;

The three core wires are distributed in pairs at 120 degrees by the same axis, and an elastic reinforcing core 3 is arranged on the axis of the three core wires, wherein the elastic reinforcing core 3 is arranged to provide the elastic performance of the cable core, so that the core wires can be effectively buffered and protected when the cable is impacted;

The core wire is externally covered with a wrapping layer 4, and a filler 11 is arranged between the core wire in the wrapping layer 4 and the elasticity enhancing core 3;

The metal shielding layer 5 is wrapped outside the wrapping layer 4, the isolating layer 6 is wrapped outside the metal shielding layer 5, the buffer layer 7 is wrapped outside the isolating layer 6, the metal reinforcing layer 8 is wrapped outside the buffer layer 7, and the sheath layer 10 is wrapped outside the metal reinforcing layer 8.

The inner center of the elastic reinforcing core 3 is provided with a fiber core 9;

The fiber core 9 is provided to improve the overall core stretchability of the cable.

The fiber core 9 is a high-strength resin fiber strand.

The outer circumference of the elasticity enhancing core 3 is uniformly distributed with three protrusions 31.

The insulating layer 2 is provided with a clamping groove 21.

The protrusions 31 are matched with the clamping grooves 21, and the protrusions 31 distributed on the elastic reinforcing cores 3 are respectively clamped into the clamping grooves 21 of the three insulating layers 2.

The metal shielding layer 5 is formed by tightly and sequentially wrapping copper wires on the surface of the wrapping layer 4;

The induction current and the short-circuit current can be effectively guided, and the external electromagnetic interference is shielded.

The isolating layer 6 is made of high-density polyethylene material;

The external environment is isolated from being in direct contact with the internal structure of the cable, so that the cable is protected from being damaged;

the buffer layer 7 is made of a chemical cross-linked polyethylene foam material;

the metal reinforcing layer is isolated from other structures, and is buffered and extruded;

The metal reinforcing layer 8 is formed by weaving a high-strength glass fiber mesh, can effectively disperse local impact of the cable under the environment, resists radial tension and has a stable structure;

The sheath layer 10 is made of weather-resistant polyolefin material;

Has strong waterproof, rat and termite proof and acid and alkali corrosion resistant functions.

While the foregoing is directed to embodiments of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. An outdoor weather-resistant pressure-bearing power cable is characterized by comprising a conductor (1), wherein the conductor (1) is externally coated with an insulating layer (2) to form a core wire;

Distributing the three core wires in pairs at 120 degrees with the same axis, and arranging an elasticity enhancing core (3) on the axis;

The core wire is externally covered with a wrapping layer (4), and a filler (11) is arranged between the core wire in the wrapping layer (4) and the elastic reinforcing core (3);

The metal shielding layer (5) is wrapped outside the wrapping layer (4), the isolating layer (6) is wrapped outside the metal shielding layer (5), the buffer layer (7) is wrapped outside the isolating layer (6), the metal reinforcing layer (8) is wrapped outside the buffer layer (7), and the sheath layer (10) is wrapped outside the metal reinforcing layer (8).

2. An outdoor weather-resistant pressure-resistant power cable according to claim 1, wherein a fiber core (9) is centrally arranged in the elastic reinforcing core (3).

3. An outdoor weatherable pressure power cable according to claim 2, characterized in that the fiber core (9) is a high strength resin fiber strand.

4. An outdoor weatherable pressure power cable according to claim 2, characterized in that: the outer circumference of the elasticity enhancing core (3) is uniformly distributed with three bulges (31).

5. An outdoor weather-resistant and pressure-resistant power cable according to claim 4, wherein the insulating layer (2) is provided with a clamping groove (21).

6. An outdoor weather-resistant and pressure-resistant power cable according to claim 5, wherein the protrusions (31) are matched with the clamping grooves (21), and the protrusions (31) distributed on the elastic reinforcing core (3) are respectively clamped into the clamping grooves (21) of the three insulating layers (2).

7. An outdoor weatherable pressure power cable according to claim 1, characterized in that: the metal shielding layer (5) is formed by tightly wrapping copper wires on the surface of the wrapping layer (4) in sequence.

8. An outdoor weatherable pressure power cable according to claim 1, characterized in that: the isolating layer (6) is made of high-density polyethylene material;

The buffer layer (7) is made of a chemical cross-linked polyethylene foam material;

The metal reinforcing layer (8) is formed by weaving a high-strength glass fiber mesh;

The sheath layer (10) is made of a weather-resistant polyolefin material.