CN213583210U

CN213583210U - Waterproof, damp-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable

Info

Publication number: CN213583210U
Application number: CN202022935112.XU
Authority: CN
Inventors: 赵影; 杨旋; 邓任作
Original assignee: Guangdong Jianbao Cable Co ltd
Current assignee: Guangdong Jianbao Cable Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-06-29
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a waterproof moisture-proof anticorrosive environmental protection crosslinked polyethylene insulated power cable, which belongs to the technical field of cables and comprises a plurality of cable cores, wherein the outer sides of the cable cores are wrapped with water-blocking wrapping belts, a water-blocking filling layer is filled between the cable cores and the water-blocking wrapping belts, the outer sides of the water-blocking wrapping belts are wrapped with water-blocking inner protective layers, the outer sides of the water-blocking inner protective layers are wrapped with water-blocking anticorrosive layers, and the outer sides of the water-blocking anticorrosive layers are wrapped with outer sheaths; the cable comprises a water-blocking filling layer and is characterized in that a pressure reducing hole is formed in the water-blocking filling layer between every two adjacent cable cores, tensile steel wire ropes are filled in the pressure reducing hole along the length direction of the pressure reducing hole, a plurality of supporting devices are fixedly connected to the circumferential surface of each tensile steel wire rope along the length direction of the circumferential surface of each tensile steel wire rope, and each supporting device comprises a plurality of supporting arc pieces which are radially and uniformly distributed on the circumferential surface of each tensile steel wire rope. The utility model discloses possess stronger stretch-proofing ability, the effectual cable core that has protected.

Description

Waterproof, damp-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable

Technical Field

The utility model relates to a crosslinked polyethylene insulated power cable specifically is a waterproof anticorrosive environmental protection crosslinked polyethylene insulated power cable that keeps off tide, belongs to cable technical field.

Background

In recent years, with the development of national economy, island wind power generation is rapidly developed, and power facilities used on island reefs, whether power transmission cables or power distribution cables, are required to have good moisture-proof, waterproof and anticorrosive effects so as to meet the use requirements of severe environments and ensure safe and reliable operation of power transmission and distribution.

Among the prior art, there is damp proof waterproof anticorrosive environmental protection crosslinked polyethylene insulated power cable, include: the cable comprises a plurality of conductor units, a conductor insulating layer, a water-blocking filler, a water-blocking wrapping tape, a water-blocking inner protective layer, a water-blocking anticorrosive layer and an anticorrosive flame-retardant halogen-free outer sheath, but the cable is poor in tensile resistance. The cable is laid by generally adopting an underground mode, and in the laying process, workers pull the cable with great strength, so that the cable core inside the cable is easily damaged, and the normal use of the cable is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a waterproof damp proof environmental protection crosslinked polyethylene insulated power cable just in order to solve above-mentioned problem, possess stronger stretch-proofing ability, the effectual cable core that has protected.

The utility model discloses a technical scheme realizes above-mentioned purpose, a waterproof moisture-proof anticorrosive environmental protection crosslinked polyethylene insulation power cable, including a plurality of cable cores, a plurality of the outside cladding of cable core has the band that blocks water, it has the filling layer that blocks water to fill between cable core and the band that blocks water, the outside cladding of the band that blocks water has the inner sheath that blocks water, the outside cladding of the inner sheath that blocks water has the anticorrosive coating that blocks water, the outside cladding of the anticorrosive coating that blocks water has the oversheath;

the cable comprises a water-blocking filling layer, wherein a pressure reducing hole is formed in the water-blocking filling layer between every two adjacent cable cores, tensile steel wire ropes are filled in the pressure reducing hole along the length direction of the pressure reducing hole, a plurality of supporting devices are fixedly connected to the circumferential surface of each tensile steel wire rope along the length direction of the circumferential surface of each tensile steel wire rope, each supporting device comprises a plurality of radially and uniformly distributed supporting arc pieces on the circumferential surface of each tensile steel wire rope, and the curved surfaces of the supporting arc pieces, far away from the tensile steel wire ropes, are attached to the.

Preferably, in order to ensure that a certain space exists between the water-blocking filling layer and the cable core, two adjacent supporting devices on the circumferential surface of the tensile steel wire rope are 6-10 cm away from each other.

Preferably, in order to enable the supporting arc pieces to have a certain thickness without scratching the water-blocking filling layer, the thickness of the supporting arc pieces is 2-3 cm.

Preferably, the tensile steel wire rope and the plurality of supporting arc sheets thereon are integrally processed and formed.

Preferably, the water-blocking filling layer is made of rubber.

Preferably, the cable core comprises a conductor formed by twisting a plurality of copper wires and a cross-linked polyethylene insulating layer coated on the outer side of the conductor.

Preferably, an anti-permeation layer made of an anti-permeation material is filled between every two adjacent copper wires.

The utility model has the advantages that:

1. the tensile resistance of the utility model is enhanced by the tensile steel wire rope arranged in the pressure reducing hole, thereby effectively protecting the cable core;

2. because a certain space exists between the water-blocking filling layer and the cable core, a foundation is provided for the bending deformation of the water-blocking filling layer, and the water-blocking filling layer is prevented from cracking;

3. tensile wire rope passes through the laminating of a plurality of support arc pieces on its periphery and the circumference inner wall of pressure-reducing vent to carry out effectual support to tensile wire rope, make tensile wire rope stable install in the pressure-reducing vent, simultaneously, avoid the utility model discloses the circumference inner wall of pressure-reducing vent excessively extrudes tensile wire rope to its inboard recess when producing crooked, thereby avoids tensile wire rope to produce the bending of great angle, is favorable to tensile wire rope's normal use, and structural design is more reasonable.

Drawings

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

fig. 2 is a schematic structural view of the tensile steel wire rope and the supporting arc piece in fig. 1 according to the present invention.

In the figure: 1. a cable core; 101. a crosslinked polyethylene insulating layer; 102. a conductor; 2. a water-blocking filling layer; 3. a pressure relief vent; 4. a tensile steel wire rope; 5. supporting the arc sheet; 6. a water-blocking wrapping tape; 7. a water-blocking inner protective layer; 8. a water-blocking anticorrosive layer; 9. an outer sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a waterproof, moisture-proof, anticorrosive, environment-friendly cross-linked polyethylene insulated power cable includes a plurality of cable cores 1, a water-blocking tape 6 is wrapped outside the plurality of cable cores 1, a water-blocking filling layer 2 is filled between the cable cores 1 and the water-blocking tape 6, a water-blocking inner sheath 7 is wrapped outside the water-blocking tape 6, a water-blocking anticorrosive layer 8 is wrapped outside the water-blocking inner sheath 7, and an outer sheath 9 is wrapped outside the water-blocking anticorrosive layer 8;

the inside of the water-blocking filling layer 2 is provided with a pressure reducing hole 3 between two adjacent cable cores 1, the inside of the pressure reducing hole 3 is filled with a tensile steel wire rope 4 along the length direction thereof, a plurality of supporting devices are fixedly connected with the circumference of the tensile steel wire rope 4 along the length direction thereof, each supporting device comprises a plurality of supporting arc pieces 5 which are radially and uniformly distributed on the circumference of the tensile steel wire rope 4, and the curved surface of the tensile steel wire rope 4, far away from the supporting arc pieces 5, is attached to the inner wall of the circumference of the pressure reducing hole 3.

As a technical optimization scheme of the utility model, two adjacent supporting devices on the 4 circumferential surfaces of the tensile steel wire rope are 6-10 cm apart.

As a technical optimization scheme of the utility model, the thickness of the supporting arc piece 5 is 2-3 cm.

As a technical optimization scheme of the utility model, tensile wire rope 4 and a plurality of support arc 5 integrated into one piece above that.

As a technical optimization scheme of the utility model, the filling layer 2 that blocks water adopts rubber to make.

As a technical optimization scheme of the utility model, cable core 1 includes conductor 102 and the cladding at the crosslinked polyethylene insulating layer 101 in the conductor 102 outside that is formed by the transposition of a plurality of copper wires, and crosslinked polyethylene insulating layer 101 adopts crowded package technology one shot forming by crosslinked polyethylene.

As a technical optimization scheme of the utility model, it has the prevention of seepage layer of being made by the prevention of seepage material to fill between two adjacent copper wires, and the prevention of seepage material is formed by liquid silica gel and the mixing of powder that blocks water.

The utility model discloses when using: the tensile resistance of the utility model is enhanced by the tensile steel wire rope 4 arranged in the pressure reducing hole 3, thereby effectively protecting the cable core 1; in the process of laying the utility model, the utility model needs to be bent at a certain angle if necessary, and because a certain space exists between the water-blocking filling layer 2 and the cable core 1, the bending deformation of the water-blocking filling layer 2 is provided with a foundation, and the water-blocking filling layer 2 is prevented from cracking; simultaneously tensile wire rope 4 is through the laminating of a plurality of support arc pieces 5 on its periphery with the circumference inner wall of pressure-reducing vent 3 to carry out effectual support to tensile wire rope 4, make tensile wire rope 4 stable install in pressure-reducing vent 3, simultaneously, the utility model discloses when crooked, avoid the circumference inner wall of pressure-reducing vent 3 too to its inboard recess and excessively extrude tensile wire rope 4, thereby avoid tensile wire rope 4 to produce the bending of great angle, be favorable to tensile wire rope 4's normal use, structural design is more reasonable.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a waterproof moisture-proof anticorrosive environmental protection crosslinked polyethylene insulated power cable, includes a plurality of cable cores (1), a plurality of the outside cladding of cable core (1) has band (6) of blocking water, it has filling layer (2) of blocking water to fill between cable core (1) and band (6) of blocking water, the outside cladding of band (6) of blocking water has inner sheath (7) of blocking water, the outside cladding of inner sheath (7) of blocking water has anticorrosive coating (8) of blocking water, the outside cladding of anticorrosive coating (8) of blocking water has oversheath (9), its characterized in that,

the utility model discloses a cable core, including the cable core, the inside of the filling layer that blocks water (2) has seted up one pressure-relief vent (3) between two adjacent cable cores (1), the inside of pressure-relief vent (3) is filled along its length direction has tensile wire rope (4), along a plurality of strutting arrangement of its length direction fixedly connected with on the periphery of tensile wire rope (4), every strutting arrangement includes that a plurality of are radial evenly distributed support arc piece (5) on tensile wire rope (4) periphery, the curved surface that tensile wire rope (4) were kept away from in support arc piece (5) laminates with the circumference inner wall of pressure-relief vent (3).

2. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the distance between two adjacent supporting devices on the circumferential surface of the tensile steel wire rope (4) is 6-10 cm.

3. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the thickness of the supporting arc piece (5) is 2-3 cm.

4. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the tensile steel wire rope (4) and the plurality of supporting arc sheets (5) are integrally processed and formed.

5. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the water-blocking filling layer (2) is made of rubber.

6. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the cable core (1) comprises a conductor (102) formed by twisting a plurality of copper wires and a cross-linked polyethylene insulating layer (101) coated on the outer side of the conductor (102).

7. The waterproof, moisture-proof, anticorrosive and environment-friendly cross-linked polyethylene insulated power cable according to claim 6, characterized in that: an anti-permeation layer made of an anti-permeation material is filled between every two adjacent copper wires.