CN210073398U

CN210073398U - Seismic buried cable

Info

Publication number: CN210073398U
Application number: CN201921172500.8U
Authority: CN
Inventors: 吴英俊; 侯映霞
Original assignee: Pearl River Legendary Cable Guangzhou Co Ltd
Current assignee: Guangdong licable Technology Co.,Ltd.
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-02-14
Anticipated expiration: 2029-07-24

Abstract

The utility model particularly discloses an anti-seismic buried cable, which comprises a cable conductor; the outer side of the cable conductor is wrapped with an insulating layer; an anti-seismic layer is arranged on the outer side of the insulating layer; a plurality of groups of buffer strips are arranged between the anti-seismic layer and the insulating layer; each group of the buffer strips is arranged around the insulating layer; two adjacent groups of the buffer strips are uniformly arranged along the axial direction of the cable conductor at intervals; a filling layer is also arranged between the anti-seismic layer and the insulating layer; the buffer strip is embedded on the filling layer; a metal layer is arranged on the outer side of the anti-seismic layer; a waterproof layer is arranged on the outer side of the metal layer; and an armor layer is arranged on the outer side of the waterproof layer. The utility model discloses still can normally work in the adverse circumstances of long-term vibrations, the filling layer plays shock attenuation protection's effect to cable conductor, and the mechanical strength of cable has been strengthened to the metal level, improves the tensile strength of cable, guarantees the normal work of cable, and waterproof layer and armor have strengthened the waterproof performance and the compressive property of cable.

Description

Seismic buried cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to bury cable shock resistance.

Background

With the continuous progress of society, people pay more attention to urban environment, and in order to optimize urban environment and improve the life quality of people, people change the previous overhead line into an underground pipeline power transmission line, hide the power transmission line underground, and beautify the environment. Present antidetonation bury cable include conductor, shielding layer, insulating layer, around covering, isolation layer and armor, and this cable structure is complicated, and manufacturing cost is high and anti-seismic performance is poor, and wearing and tearing appear easily in the armor of cable in being in the vibrations environment for a long time, and the armor damages when serious, will constitute permanent destruction to other knots of cable inside. To this end we propose a seismic buried cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an earthquake resistance buries cable is provided, its anti-seismic performance and tensile strength are superior, long service life can overcome the influence that adverse circumstances such as various long-term vibrations brought.

An earthquake-resistant buried cable includes a cable conductor; the outer side of the cable conductor is wrapped with an insulating layer; an anti-seismic layer is arranged on the outer side of the insulating layer; a plurality of groups of buffer strips are arranged between the anti-seismic layer and the insulating layer; each group of the buffer strips is arranged around the insulating layer; two adjacent groups of the buffer strips are uniformly arranged along the axial direction of the cable conductor at intervals; a filling layer is also arranged between the anti-seismic layer and the insulating layer; the buffer strip is embedded on the filling layer; a metal layer is arranged on the outer side of the anti-seismic layer; a waterproof layer is arranged on the outer side of the metal layer; and an armor layer is arranged on the outer side of the waterproof layer.

Preferably, the distance between two adjacent groups of buffer strips is 50-80 cm.

Further preferably, the buffer strip is made of hard rubber or silica gel material.

Preferably, the filling layer is a soft rubber layer or a high-elasticity foamed polymer layer.

Preferably, the metal layer is a galvanized copper wire or an aluminum foil.

Preferably, the waterproof layer is a polyvinyl chloride or polyurethane layer.

Has the advantages that: be equipped with the antidetonation layer in the insulating layer outside and guaranteed that the cable still can normally work in the adverse circumstances of long-term vibrations, the filling layer plays shock attenuation protection's effect to cable conductor, the life of extension cable conductor, the buffering strip can prevent that the phenomenon of dislocation from appearing in the cable conductor, play good limiting displacement to cable conductor simultaneously, save manufacturing cost, the production efficiency is improved, the mechanical strength of cable has been strengthened to the metal level, the tensile property of improvement cable, guarantee the normal work of cable, waterproof layer and armor have strengthened the waterproof performance and the compressive property of cable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view taken along line a-a of fig. 1 according to the present invention.

In the figure: 1-a cable conductor; 2-an insulating layer; 3-earthquake-resistant layer; 4-buffer strip; 5-a filling layer; 6-a metal layer; 7-waterproof layer; 8-armor layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1-2, the utility model provides an earthquake-resistant buried cable, which comprises a cable conductor 1; the outer side of the cable conductor 1 is wrapped with an insulating layer 2; an anti-seismic layer 3 is arranged on the outer side of the insulating layer 2; a plurality of groups of buffer strips 4 are arranged between the anti-seismic layer 3 and the insulating layer 2; each group of the buffer strips 4 is arranged around the insulating layer 2; two adjacent groups of buffer strips 4 are uniformly arranged along the axial direction of the cable conductor 1 at intervals; the distance between two adjacent groups of buffer strips 4 is specifically 50cm, so that the displacement phenomenon of the cable conductor 1 can be prevented, meanwhile, the cable conductor 1 is well limited, the manufacturing cost is saved, and the production efficiency is improved; the buffer strips 4 are made of hard rubber materials, so that a good shock absorption effect can be achieved on the cable conductor 1, and the shock resistance of the cable is improved; a filling layer 5 is also arranged between the anti-seismic layer 3 and the insulating layer 2; the filling layer 5 is a soft rubber layer, so that the shock resistance of the cable is improved; the buffer strip 4 is embedded on the filling layer 5; a metal layer 6 is arranged on the outer side of the anti-seismic layer 3; the metal layer 6 is a galvanized copper wire, so that the mechanical strength of the cable is enhanced, the tensile and compressive properties of the cable are improved, and the normal operation of the cable is ensured; a waterproof layer 7 is arranged on the outer side of the metal layer 6; the waterproof layer 7 is a polyvinyl chloride layer which has good elasticity and high tensile strength, and the service life of the cable is effectively prolonged while the shock is absorbed; and an armor layer 8 is arranged on the outer side of the waterproof layer 7.

Of course, the above description only shows a certain embodiment of the present invention, and the detailed description thereof is not to be construed as limiting the scope of the present invention, and it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principle and spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An earthquake-resistant buried cable includes a cable conductor; the method is characterized in that: the outer side of the cable conductor is wrapped with an insulating layer; an anti-seismic layer is arranged on the outer side of the insulating layer; a plurality of groups of buffer strips are arranged between the anti-seismic layer and the insulating layer; each group of the buffer strips is arranged around the insulating layer; two adjacent groups of the buffer strips are uniformly arranged along the axial direction of the cable conductor at intervals; a filling layer is also arranged between the anti-seismic layer and the insulating layer; the buffer strip is embedded on the filling layer; a metal layer is arranged on the outer side of the anti-seismic layer; a waterproof layer is arranged on the outer side of the metal layer; and an armor layer is arranged on the outer side of the waterproof layer.

2. The seismic buried cable of claim 1, wherein a distance between two adjacent sets of said buffer strips is 50cm to 80 cm.

3. A seismic buried cable according to claim 2, wherein said buffer strip is of a hard rubber or silicone material.

4. A seismic buried cable according to claim 1, wherein said filler layer is a soft rubber layer or a highly elastic foamed polymer layer.

5. The seismic buried cable of claim 1, wherein said metal layer is a galvanized copper wire or aluminum foil.

6. The seismic buried cable of claim 1, wherein said waterproof layer is a polyvinyl chloride or polyurethane layer.