CN216697916U

CN216697916U - High-temperature-resistant crosslinked polyethylene armored fireproof cable

Info

Publication number: CN216697916U
Application number: CN202123417693.9U
Authority: CN
Inventors: 蒋琪; 孙迪; 蒋俞飞
Original assignee: Wuxi Jiangnan Cable Co Ltd
Current assignee: Wuxi Jiangnan Cable Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-07
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a high-temperature-resistant cross-linked polyethylene armored fireproof cable which comprises a wire core, wherein an insulating layer is arranged on the surface of the outer side of the wire core, an inner sheath is arranged on the outer side of the insulating layer, a flame-retardant wrapping layer is arranged on the outer side of the inner sheath, an installation cavity is arranged between the inner side of the flame-retardant wrapping layer and the inner sheath, a shielding structure is arranged inside the installation cavity, a high-temperature-resistant protective layer is arranged on the outer side of the flame-retardant wrapping layer, a steel strip armor layer is arranged on the outer side of the high-temperature-resistant protective layer, a flame-retardant layer and an outer sheath are arranged on the outer side of the steel strip armor layer, and the flame-retardant layer is arranged on the outer side of the flame-retardant layer. According to the utility model, the flame-retardant wrapping layer, the high-temperature-resistant protective layer, the flame-retardant layer and the high-temperature-resistant layer are arranged on the outer side of the wire core, and the flame-retardant particles forming the filling layer are combined, so that the overall high-temperature-resistant flame-retardant performance of the cable is greatly improved.

Description

High-temperature-resistant crosslinked polyethylene armored fireproof cable

Technical Field

The utility model relates to the related technical field of cables, in particular to a high-temperature-resistant crosslinked polyethylene armored fireproof cable.

Background

The polyethylene insulated cable is produced by chemical or physical process to convert the insulating polyethylene molecule from linear molecular structure to main netted molecular structure, i.e. thermoplastic polyethylene is converted to thermosetting crosslinked polyethylene, so that it has greatly raised heat resistance and mechanical performance, reduced shrinkage, no melting after being heated and excellent electric performance maintained.

The existing polyethylene armored cable has the following defects: the whole high temperature resistant fire behavior is relatively poor, and the cable is whole when receiving external acting force simultaneously, causes the damage to its inside sinle silk easily, influences its normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature-resistant crosslinked polyethylene armored fireproof cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high temperature resistant crosslinked polyethylene armor fireproof cable, includes the sinle silk, the outside surface of sinle silk is provided with the insulating layer, the outside of insulating layer is provided with the inner sheath, the outside of inner sheath is provided with fire-retardant around the covering, fire-retardant around the inboard of covering with be provided with the installation cavity between the inner sheath, the inside of installation cavity is provided with shielding structure, fire-retardant being provided with the high temperature resistant inoxidizing coating around the outside of covering, the outside of high temperature resistant inoxidizing coating is provided with the steel band armor, the outside of steel band armor is provided with fire-retardant layer and oversheath, fire-retardant layer sets up the outside at the steel band armor, the oversheath sets up the outside at fire-retardant layer.

As a further preferred of this technical scheme, shielding structure includes a plurality of partition strips and shielding copper shroud, filling layer, and is a plurality of partition strips will install the cavity and cut apart, partition strip's both ends respectively with fire-retardant outer wall butt around inner wall, the inner sheath of covering, partition strip's upper end equidistance has seted up a plurality of mounting grooves, shielding copper shroud is the heliciform and arranges in the mounting groove, the filling layer sets up the surface in shielding copper shroud.

As a further preferable mode of the present technical solution, the plurality of partition strips are all located on a plane where the diameter of the inner sheath is located.

As a further preferred feature of the present invention, the filling layer is made of flame retardant particles.

As a further preferred feature of the present invention, the inner surface of the shielding copper clad tape is covered with a rubber buffer layer, the rubber buffer layer has a fan-shaped cross section, and the inner surface of the rubber buffer layer abuts against the outer wall of the inner sheath.

As a further preferred mode of the technical solution, the outer sheath is made of a plurality of steel wires and a high temperature resistant layer, and the steel wires are all inserted into the high temperature resistant layer.

As a further preferable mode of the present invention, an outer side surface of the outer sheath is provided with an anticorrosive layer.

The utility model provides a high-temperature-resistant crosslinked polyethylene armored fireproof cable which has the following beneficial effects:

(1) according to the utility model, the flame-retardant wrapping layer, the high-temperature-resistant protective layer, the flame-retardant layer and the high-temperature-resistant layer are arranged on the outer side of the wire core, and the flame-retardant particles forming the filling layer are combined, so that the overall high-temperature-resistant flame-retardant performance of the cable is greatly improved.

(2) According to the utility model, the shielding structure is arranged, the upper end and the lower end of the partition strip of the shielding structure are respectively abutted against the inner wall of the flame-retardant wrapping layer and the outer wall of the inner sheath, the shielding copper clad belt is arranged in the installation groove at the upper end of the partition strip, the shielding performance of the cable is improved, and the rubber buffer layer is arranged on the inner side of the shielding copper clad belt and abutted against the outer wall of the inner sheath, so that when the cable is wholly subjected to external acting force, effective buffering can be carried out, and the protection on an internal wire core is improved.

Drawings

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

FIG. 2 is a schematic diagram of the shielding structure of the present invention;

FIG. 3 is a schematic structural view of a partition strip of the present invention;

fig. 4 is a schematic structural view of the outer sheath of the present invention.

In the figure: 1. a wire core; 2. an insulating layer; 3. an inner sheath; 4. a flame-retardant wrapping layer; 5. installing a cavity; 6. a high temperature resistant protective layer; 7. a steel tape armor layer; 8. a flame retardant layer; 9. an outer sheath; 10. partition bars; 11. shielding the copper clad tape; 12. a filling layer; 13. mounting grooves; 14. a steel wire; 15. a high temperature resistant layer; 16. an anticorrosive layer; 17. a rubber cushion layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the present invention provides the technical solutions: the utility model provides a high temperature resistant crosslinked polyethylene armor fireproof cable, includes sinle silk 1, the outside surface of sinle silk 1 is provided with insulating layer 2, the outside of insulating layer 2 is provided with inner sheath 3, the outside of inner sheath 3 is provided with fire-retardant covering 4, fire-retardant covering 4 the inboard with be provided with installation cavity 5 between the inner sheath 3, the inside of installation cavity 5 is provided with shielding structure, fire-retardant covering 4's the outside is provided with high temperature resistant inoxidizing coating 6, high temperature resistant inoxidizing coating 6's the outside is provided with steel tape armoring layer 7, steel tape armoring layer 7's the outside is provided with fire-retardant layer 8 and oversheath 9, fire-retardant layer 8 sets up the outside at steel tape armoring layer 7, oversheath 9 sets up the outside at fire-retardant layer 8.

In this embodiment, specifically: shielding structure includes a plurality of partition strip 10 and shielding copper shroud 11, filling layer 12, and is a plurality of partition strip 10 will install cavity 5 and cut apart, partition strip 10 both ends respectively with fire-retardant outer wall butt around inner wall, inner sheath 3 of covering 4, a plurality of mounting grooves 13 have been seted up to the upper end equidistance of partition strip 10, shielding copper shroud 11 is the heliciform and arranges in mounting groove 13, filling layer 12 sets up the surface at shielding copper shroud 11.

In this embodiment, specifically: a plurality of said partition strips 10 are all located on the plane of the diameter of the inner sheath 3.

In this embodiment, specifically: the filling layer 12 is made of flame-retardant particles, so that the overall flame-retardant performance of the cable is further improved.

In this embodiment, specifically: the inside surface cladding of shielding copper shroud 11 has rubber buffer layer 17, rubber buffer layer 17's cross-section is fan-shaped, rubber buffer layer 17's inside surface and inner sheath 3's outer wall butt, the bronze drum with rubber buffer layer 17 and inner sheath 3 butt to when the cable wholly receives outside effort, can carry out effectual buffering, improve the protection to inside sinle silk 1.

In this embodiment, specifically: the outer sheath 9 is made of a plurality of steel wires 14 and a high-temperature resistant layer 15, and the steel wires 14 are inserted into the high-temperature resistant layer 15 in a penetrating mode, so that the strength and the toughness of the outer sheath are enhanced.

In this embodiment, specifically: the outer side surface of the outer sheath 9 is provided with the anticorrosive layer 16, so that the anticorrosive capability of the outer sheath 9 is improved, and the integral protective performance of the cable is improved.

The theory of operation, through set up fire-retardant around covering 4, high temperature resistant inoxidizing coating 6 and fire-retardant layer 8, high temperature resistant layer 15 in sinle silk 1's the outside, combine to constitute the fire-retardant granule of filling layer 12, great improvement the holistic high temperature resistant flame retardant property of cable, set up the shielding structure in the inside of installation cavity 5 simultaneously, with shielding structure's wall strip 10 upper and lower both ends respectively with fire-retardant inner wall, the outer wall butt of inner sheath 3 around covering 4, set up shielding copper shroud 11 in the mounting groove 13 of wall strip 10 upper end, improve the shielding property of cable to the outer wall butt through setting up rubber buffer layer 17 and inner sheath 3 in shielding copper shroud 11's inboard, thereby when the cable wholly received outside effort, can carry out effectual buffering, improve the protection to inside sinle silk 1.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high temperature resistant crosslinked polyethylene armor fireproof cable which characterized in that: comprises a wire core (1), an insulating layer (2) is arranged on the outer side surface of the wire core (1), an inner sheath (3) is arranged on the outer side of the insulating layer (2), a flame-retardant wrapping layer (4) is arranged on the outer side of the inner sheath (3), an installation cavity (5) is arranged between the inner side of the flame-retardant wrapping layer (4) and the inner sheath (3), a shielding structure is arranged in the installation cavity (5), a high-temperature-resistant protective layer (6) is arranged on the outer side of the flame-retardant wrapping layer (4), a steel tape armor layer (7) is arranged on the outer side of the high-temperature resistant protective layer (6), a flame retardant layer (8) and an outer sheath (9) are arranged on the outer side of the steel tape armor layer (7), the flame-retardant layer (8) is arranged on the outer side of the steel tape armor layer (7), and the outer sheath (9) is arranged on the outer side of the flame-retardant layer (8).

2. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 1, wherein: shielding structure includes a plurality of partition strip (10) and shielding copper shroud (11), filling layer (12), and is a plurality of partition strip (10) will install cavity (5) and cut apart, partition strip (10) both ends respectively with fire-retardant outer wall butt around inner wall, inner sheath (3) of covering (4), a plurality of mounting grooves (13) have been seted up to the upper end equidistance of partition strip (10), shielding copper shroud (11) are the heliciform and arrange in mounting groove (13), filling layer (12) set up the surface at shielding copper shroud (11).

3. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 2, wherein: the plurality of partition strips (10) are all located on the plane where the diameter of the inner sheath (3) is located.

4. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 2, wherein: the filling layer (12) is made in particular of flame-retardant particles.

5. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 2, wherein: the inside surface cladding of shielding copper shroud band (11) has rubber buffer layer (17), the cross-section of rubber buffer layer (17) is fan-shaped, the inside surface of rubber buffer layer (17) and the outer wall butt of inner sheath (3).

6. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 1, wherein: the outer sheath (9) is made of a plurality of steel wires (14) and a high-temperature-resistant layer (15), and the steel wires (14) are all inserted into the high-temperature-resistant layer (15).

7. The high temperature resistant crosslinked polyethylene armored fireproof cable according to claim 1, wherein: and the outer side surface of the outer sheath (9) is provided with an anticorrosive layer (16).