CN212750431U

CN212750431U - Flame-retardant corrosion-resistant crosslinked polyethylene cable

Info

Publication number: CN212750431U
Application number: CN202021639144.9U
Authority: CN
Inventors: 王浩; 王旭鸣; 周建琴
Original assignee: JIANGSU YUANTONG CABLE CO Ltd
Current assignee: JIANGSU YUANTONG CABLE CO Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-03-19
Anticipated expiration: 2030-08-10

Abstract

The utility model relates to the technical field of cables, specific fire-retardant corrosion-resistant crosslinked polyethylene cable that says so, including a center section of thick bamboo, a center section of thick bamboo outside circumference equidistance fixedly connected with four support frames of group, it is adjacent two sets of be equipped with the sinle silk between the support frame, sinle silk from interior to exterior includes conductor, internal shield layer, internal insulation layer and outer shielding layer, four groups in proper order the sinle silk outside is passed through the mica tape winding. The utility model has the advantages that the four groups of support frames and the central cylinder are arranged to bear the cable core, so that the cable structure is firmer, and the cable core is prevented from being damaged due to extrusion; through the arrangement of the mica tape, the filling layer made of magnesium oxide mineral materials and the flame-retardant filling rope, the fire resistance, high temperature resistance and flame retardance of the cable are improved; through the setting of the foaming filling strip that the dampproof course and the dampproof course were filled, the foaming filling strip can take place the inflation when meeting water, absorbs moisture, prevents moisture infiltration, plays the effect of blocking water.

Description

Flame-retardant corrosion-resistant crosslinked polyethylene cable

Technical Field

The utility model relates to the technical field of cables, specifically a fire-retardant corrosion-resistant crosslinked polyethylene cable.

Background

With the development of economy and the progress of science and technology, the requirements of human beings on communication and power supply are increasing day by day, cables need to be laid in many places, and the crosslinked polyethylene insulated cable is a cable suitable for the fields of power distribution networks and the like. The existing crosslinked polyethylene insulated cable has low fire resistance and is easy to burn. In some environments, due to overhigh temperature or rain erosion, the cable is easy to corrode, the service life of the cable is shortened, the safety of power transmission is influenced, and the use requirements of people cannot be met. Therefore, a flame-retardant corrosion-resistant crosslinked polyethylene cable is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant corrosion-resistant crosslinked polyethylene cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant corrosion-resistant crosslinked polyethylene cable, includes a center section of thick bamboo, four groups of support frames of center section of thick bamboo outside circumference equidistance fixedly connected with, adjacent two sets of be equipped with the sinle silk between the support frame, sinle silk from interior to exterior includes conductor, internal shield layer, internal insulation layer and outer shielding layer in proper order, four groups the sinle silk outside is passed through the winding of mica tape, space department between mica tape and sinle silk and the support frame is filled there is the filling layer, a center section of thick bamboo intussuseption is filled with fire-retardant packing rope, the mica tape outside is equipped with the external insulation layer, the external insulation layer outside is equipped with the inner sheath layer, the inner sheath layer outside is provided with the dampproof course, the through-hole has evenly been seted up in the dampproof course, the through-.

As a further optimization of the technical scheme, the four groups of the support frames and the central cylinder are integrally formed.

As a further optimization of the technical scheme, the conductor is formed by stranding a plurality of copper wires.

As further optimization of the technical scheme, the inner shielding layer and the outer shielding layer are both tin-plated copper mesh shielding layers, and the inner insulating layer and the outer insulating layer are both crosslinked polyethylene insulating layers.

As a further optimization of the technical scheme, the filling layer is a magnesium oxide mineral filling layer.

As a further optimization of the technical scheme, the inner sheath layer and the outer sheath layer are both low-smoke halogen-free polyolefin sheath layers.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages that the four groups of support frames and the central cylinder are arranged to bear the cable core, so that the cable structure is firmer, and the cable core is prevented from being damaged due to extrusion;

the inner shielding layer, the inner insulating layer and the outer shielding layer are arranged on the outer side of the conductor, so that partial discharge of a cable structure is prevented, and the insulating property and the use safety of the cable are improved;

through the arrangement of the mica tape, the filling layer made of magnesium oxide mineral materials and the flame-retardant filling rope, the fire resistance, high temperature resistance and flame retardance of the cable are improved;

through the arrangement of the moisture-proof layer and the foaming filling strips filled in the moisture-proof layer, the foaming filling strips can expand when meeting water, absorb moisture, prevent the moisture from permeating and play a role in blocking water;

through the arrangement of the steel belt layer, the mechanical strength of the cable is improved, the anti-corrosion capability is improved, and the service life of the cable is prolonged;

the inner sheath layer and the outer sheath layer are both low-smoke halogen-free polyolefin sheath layers, so that the high-temperature resistance and flame retardance of the cable are improved, and the cable is low in smoke and pollution during combustion.

Drawings

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

fig. 2 is the schematic diagram of the structure of the core of the present invention.

In the figure: 1. a central barrel; 2. a support frame; 3. a wire core; 301. a conductor; 302. an inner shield layer; 303. an inner insulating layer; 304. an outer shield layer; 4. mica tapes; 5. a filling layer; 6. a flame retardant filler rope; 7. an outer insulating layer; 8. an inner jacket layer; 9. a moisture barrier; 10. foaming the filling strip; 11. a steel belt layer; 12. an outer jacket layer.

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, the present invention provides a technical solution: the utility model provides a fire-retardant corrosion-resistant crosslinked polyethylene cable, includes a center section of

thick bamboo

1, and 1 outside circumference equidistance fixedly connected with of a center section of thick bamboo four groups support frame 2, integrated into one piece setting between four groups support frame 2 and a center section of thick bamboo 1 plays the effect that bears to sinle silk 3, can make cable construction firmer, prevents that the cable from suffering the extrusion and leading to sinle silk 3 to damage.

Be equipped with sinle silk 3 between two adjacent sets of support frames 2, sinle silk 3 includes conductor 301, internal shield layer 302, internal insulation 303 and outer shielding 304 in proper order from inside to outside, and conductor 301 is formed by the transposition of many copper wires. The inner shielding layer 302 and the outer shielding layer 304 are tin-plated copper mesh shielding layers, and the inner shielding layer 302 and the outer shielding layer 304 can prevent partial discharge of structures on the inner side and the outer side, so that the use safety of the cable is improved. The inner insulating layer 303 is a cross-linked polyethylene insulating layer, so that the cable is higher in insulating property and safer to use.

The outer sides of the four groups of wire cores 3 are wound by mica tapes 4, and the mica tapes 4 have excellent high-temperature resistance and combustion resistance. The gap between the mica tape 4 and the wire core 3 and the support frame 2 is filled with a filling layer 5, and specifically, the filling layer 5 can be a magnesium oxide mineral filling layer, so that the mica tape has the advantages of fire resistance, high temperature resistance, heat insulation and heat insulation. The central cylinder 1 is filled with a flame-retardant filling rope 6, and has flame-retardant performance.

An outer insulating layer 7 is arranged on the outer side of the mica tape 4, and the outer insulating layer 7 is a cross-linked polyethylene insulating layer, so that the insulating property of the cable is higher. An inner sheath layer 8 is arranged on the outer side of the outer insulating layer 7, and the inner sheath layer 8 is a low-smoke halogen-free polyolefin sheath layer. The inner sheath layer 8 outside is provided with dampproof course 9, has evenly seted up the through-hole in the dampproof course 9, and the through-hole intussuseption is filled with foaming filler strip 10, and foaming filler strip 10 meets water inflation, absorbs moisture, prevents moisture infiltration, plays the effect of blocking water.

The outer side of the moisture-proof layer 9 is wound with a steel belt layer 11, so that the mechanical strength of the cable is improved, the anti-corrosion capability is improved, and the service life of the cable is prolonged. The outer side of the steel belt layer 11 is provided with an outer sheath layer 12, the outer sheath layer 12 is a low-smoke halogen-free polyolefin sheath layer, the high-temperature resistance and the flame retardant property of the cable are improved, and the cable is low in smoke and small in pollution during combustion.

Specifically, when the cable is used, the four groups of support frames 2 and the central cylinder 1 are arranged to bear the cable core 3, so that the cable structure is firmer, and the cable is prevented from being damaged by the cable core 3 due to extrusion;

the inner shielding layer 302, the inner insulating layer 303 and the outer shielding layer 304 are arranged on the outer side of the conductor 301, so that partial discharge of a cable structure is prevented, and the insulating property and the use safety of the cable are improved;

through the arrangement of the mica tape 4, the filling layer 5 made of magnesium oxide mineral material and the flame-retardant filling rope 6, the fire resistance, high temperature resistance and flame retardance of the cable are improved;

through the arrangement of the moisture-proof layer 9 and the foaming filling strips 10 filled in the moisture-proof layer 9, the foaming filling strips 10 can expand when meeting water, absorb water, prevent the water from permeating and play a role in blocking water;

by arranging the steel belt layer 11, the mechanical strength of the cable is improved, the anti-corrosion capability is improved, and the service life of the cable is prolonged;

the inner sheath layer 8 and the outer sheath layer 12 are both low-smoke halogen-free polyolefin sheath layers, so that the high-temperature resistance and flame retardance of the cable are improved, and the cable is low in smoke and pollution during combustion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A flame-retardant corrosion-resistant cross-linked polyethylene cable comprises a central cylinder (1), and is characterized in that: the center tube (1) outer side circumference equidistance fixedly connected with four groups of support frames (2), adjacent two groups are equipped with sinle silk (3) between the support frames (2), sinle silk (3) from interior to exterior includes conductor (301), internal shield layer (302), internal insulation layer (303) and outer shielding layer (304) in proper order, four groups sinle silk (3) outside is twined through mica tape (4), space department between mica tape (4) and sinle silk (3) and support frame (2) is filled with filling layer (5), center tube (1) intussuseption is filled with fire-retardant packing rope (6), the mica tape (4) outside is equipped with external insulation layer (7), the external insulation layer (7) outside is equipped with inner sheath layer (8), the inner sheath layer (8) outside is provided with dampproof course (9), the through-hole has evenly been seted up in dampproof course (9), the through-hole intussuseption is filled with foaming filler strip (10), a steel belt layer (11) is wound on the outer side of the moisture-proof layer (9), and an outer sheath layer (12) is arranged on the outer side of the steel belt layer (11).

2. The flame-retardant corrosion-resistant crosslinked polyethylene cable according to claim 1, wherein: the four groups of support frames (2) and the central cylinder (1) are integrally formed.

3. The flame-retardant corrosion-resistant crosslinked polyethylene cable according to claim 1, wherein: the conductor (301) is formed by stranding a plurality of copper wires.

4. The flame-retardant corrosion-resistant crosslinked polyethylene cable according to claim 1, wherein: the inner shielding layer (302) and the outer shielding layer (304) are tin-plated copper mesh shielding layers, and the inner insulating layer (303) and the outer insulating layer (7) are cross-linked polyethylene insulating layers.

5. The flame-retardant corrosion-resistant crosslinked polyethylene cable according to claim 1, wherein: the filling layer (5) is a magnesium oxide mineral filling layer.

6. The flame-retardant corrosion-resistant crosslinked polyethylene cable according to claim 1, wherein: the inner sheath layer (8) and the outer sheath layer (12) are low-smoke halogen-free polyolefin sheath layers.