CN217690571U

CN217690571U - Double-layer extruded low-smoke halogen-free crosslinked wire

Info

Publication number: CN217690571U
Application number: CN202222032605.1U
Authority: CN
Inventors: 胡伟杰; 李伟哲
Original assignee: Hebei Chaoyang Cable Co ltd
Current assignee: Hebei Chaoyang Cable Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-10-28
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a double-deck extruded low smoke and zero halogen crosslinked electric wire, including outer inoxidizing coating, the internal connection of outer inoxidizing coating has interior inoxidizing coating, reserve between outer inoxidizing coating and the interior inoxidizing coating and press the cavity, the buffering strip is installed to the inboard of outer inoxidizing coating, the utility model discloses a set up outer inoxidizing coating, interior inoxidizing coating, prevent pressing cavity, buffering strip, parting bead, buffer chamber, packing cavity, fire-retardant packing block, spacing strip, support bar and support cavity, outside extrusion can make outer inoxidizing coating inwards sunken, and the inside buffering strip and parting bead of cavity are prevented pressing in the extrusion, carry out buffering once through the buffer chamber, and the deformation extrusion of spacing strip outside the outer inoxidizing coating outside again blocks, and the inboard support bar of interior inoxidizing coating carries out the secondary buffering to outside extrusion, to the double-deck extruded buffering of outer inoxidizing coating and interior inoxidizing coating, makes outside extrusion can not crush inside crosslinked polyethylene insulating block and cable core.

Description

Double-layer extruded low-smoke halogen-free crosslinked wire

Technical Field

The utility model relates to the technical field of electric wire, specifically be a double-deck extruded low smoke and zero halogen crosslinked electric wire.

Background

The low-smoke halogen-free wire is an insulating layer material halogen substance of the wire, a halogen cross-linking material is adopted as the insulating layer material, the wire can be called a cross-linked wire, halogen-containing gas is not released under the condition of combustion, the smoke concentration is low, the domestic existing mass production manufacturers have production capacity, the low-smoke halogen-free wire has only light water mist when being combusted, the visible distance is more than 60 meters, no toxic substance is contained, and the wire achieves the flame-retardant effect through the irradiation cross-linking process;

however, the low-smoke halogen-free crosslinked wire on the market is easily extruded outside, so that the power transmission of the internal wire is blocked, and the power transmission effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double-deck extruded low smoke and zero halogen crosslinked electric wire can effectively solve and propose among the above-mentioned background art that low smoke and zero halogen crosslinked electric wire outside receives the extrusion easily on the existing market, causes that the transmission of electricity of inside electric wire is obstructed, influences the problem of transmission of electricity effect.

In order to achieve the above object, the utility model provides a following technical scheme: a double-layer extruded low-smoke halogen-free crosslinked wire comprises an outer protective layer, wherein an inner protective layer is connected inside the outer protective layer, a pressure-proof cavity is reserved between the outer protective layer and the inner protective layer, a buffer strip is installed on the inner side of the outer protective layer, a separation strip is connected to the middle of the buffer strip, a buffer cavity is formed between the buffer strip and the separation strip, a filling cavity is formed by surrounding the outer protective layer, the buffer strip and the separation strip, and a flame-retardant filling block is filled inside the filling cavity;

the outside of interior inoxidizing coating is connected with spacing, a plurality of support bars are installed to the inboard of interior inoxidizing coating, and is adjacent it has the support cavity to reserve between the support bar.

Preferably, the number of the limiting strips is twice that of the buffering strips, and two limiting strips are bonded on the outer side of one buffering strip.

Preferably, the buffer strip and the separation strip are both arc-shaped structures, and the concave surface of the buffer strip is opposite to the concave surface of the separation strip.

Preferably, the number of the supporting strips is equal to that of the limiting strips, and the supporting strips and the limiting strips are arranged on the inner side and the outer side of the inner protective layer in a staggered mode.

Preferably, the inboard of interior inoxidizing coating is connected with a plurality of crosslinked polyethylene insulating block, the mounting groove has been seted up to the inboard of crosslinked polyethylene insulating block, the inside embedding of mounting groove has the cable conductor, the outside of cable conductor bonds and has the connecting strip, the joint arc groove has been seted up to the outside of connecting strip corresponding cable conductor position department.

Preferably, the connecting strip is located between the plurality of crosslinked polyethylene insulation blocks, and an installation gap is reserved between the connecting strip and the crosslinked polyethylene insulation blocks.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. through setting up outer inoxidizing coating, interior inoxidizing coating, prevent pressing the cavity, the buffering strip, the parting bead, the buffering cavity, fill the cavity, fire-retardant filling block, spacing strip, support bar and support cavity, outside extrusion can make outer inoxidizing coating inwards sunken, the inside buffering strip and the parting bead of cavity are prevented pressing in the extrusion, cushion once through the buffering cavity, spacing strip through the interior inoxidizing coating outside again stops the deformation extrusion of outside buffering strip, the inboard support bar of interior inoxidizing coating carries out the secondary buffering to outside extrusion, to the double-deck extruded buffering of outer inoxidizing coating and interior inoxidizing coating, make outside extrusion can not crush inside crosslinked polyethylene insulating block and cable conductor.

2. Through setting up crosslinked polyethylene insulating block, the mounting groove, the cable conductor, connecting strip and joint arc groove, when the wiring, shell outside outer inoxidizing coating and interior inoxidizing coating, break off crosslinked polyethylene insulating block outwards, the cable conductor spills, the cable conductor that will need the wiring is torn from the connecting strip outside, the connecting strip can continue fixed remaining cable conductor, crosslinked polyethylene insulating block and connecting strip are fixed stable to making the cable conductor, crosslinked polyethylene insulating block and connecting strip separation are convenient, make things convenient for the wiring operation of cable conductor.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of an inner protective layer of the present invention;

FIG. 3 is a schematic view of the supporting bar of the present invention;

FIG. 4 is a schematic structural diagram of the cross-linked polyethylene insulating block of the present invention;

FIG. 5 is a schematic structural view of the connecting strip of the present invention;

the reference numbers in the figures: 1. an outer protective layer; 2. an inner protective layer; 3. a pressure-proof cavity; 4. a buffer strip; 5. a dividing strip; 6. a buffer chamber; 7. filling the chamber; 8. a flame retardant filler block; 9. a limiting strip; 10. a supporting strip; 11. a support chamber; 12. a cross-linked polyethylene insulation block; 13. mounting grooves; 14. a cable core; 15. a connecting strip; 16. the arc groove is clamped.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-5, the utility model provides a technical scheme, a double-deck extruded low smoke and zero halogen crosslinked electric wire, including outer inoxidizing coating 1, the internal connection of outer inoxidizing coating 1 has interior inoxidizing coating 2, it presses cavity 3 to reserve between outer inoxidizing coating 1 and the interior inoxidizing coating 2, buffering strip 4 is installed to the inboard of outer inoxidizing coating 1, the middle part of buffering strip 4 is connected with parting bead 5, buffering strip 4 and parting bead 5 are arc structure, the concave surface of buffering strip 4 is relative with the concave surface of parting bead 5, make the cushioning effect better, be formed with buffer chamber 6 between buffering strip 4 and parting bead 5, enclose between outer inoxidizing coating 1, buffering strip 4 and the parting bead 5 and form and fill cavity 7, it has fire-retardant filling block 8 to fill cavity 7 inside packing;

the outside of interior inoxidizing coating 2 is connected with spacing 9, the quantity of spacing 9 is the twice of 4 quantity of buffering strip, 4 outside bonds of a buffering strip have two spacing 9, make things convenient for buffering strip 4 and spacing 9 to be connected, it is stable to make to connect between outer inoxidizing coating 1 and the interior inoxidizing coating 2, a plurality of support bars 10 are installed to the inboard of interior inoxidizing coating 2, the number of support bar 10 equals with spacing 9's number, the inside and outside both sides of inoxidizing coating 2 including support bar 10 and the crisscross setting of spacing 9, make support bar 10 and spacing 9 evenly distributed, it has support cavity 11 to reserve between the adjacent support bar 10.

The inboard of interior inoxidizing coating 2 is connected with a plurality of crosslinked polyethylene insulating block 12, mounting groove 13 has been seted up to the inboard of crosslinked polyethylene insulating block 12, the inside embedding of mounting groove 13 has cable core 14, the outside bonding of cable core 14 has connecting strip 15, connecting strip 15 is located between a plurality of crosslinked polyethylene insulating block 12, it has the installation space to reserve between connecting strip 15 and the crosslinked polyethylene insulating block 12, make things convenient for the follow-up electric wire of shelling to work a telephone switchboard, joint arc groove 16 has been seted up to the outside of connecting strip 15 corresponding cable core 14 position department.

The utility model discloses a theory of operation and use flow: when the electric wire is extruded, the outer protective layer 1 can be inwards sunken due to external extrusion, the buffer strips 4 and the partition strips 5 inside the anti-pressure cavity 3 are extruded, primary buffering is carried out through the buffer cavity 6, then deformation extrusion of the outer buffer strips 4 is stopped through the limiting strips 9 outside the inner protective layer 2, secondary buffering is carried out on the external extrusion through the supporting strips 10 inside the inner protective layer 2, and the crosslinked polyethylene insulating blocks 12 and the cable cores 14 inside the electric wire cannot be crushed due to the external extrusion through double-layer extrusion buffering of the outer protective layer 1 and the inner protective layer 2;

when carrying out the wiring, earlier peel off outside outer inoxidizing coating 1 and interior inoxidizing coating 2 open, then break off crosslinked polyethylene insulating block 12 outwards, make cable conductor 14 spill, the cable conductor 14 that will need the wiring is torn from the connecting strip 15 outside, the wiring of being convenient for, and connecting strip 15 can continue fixed remaining cable conductor 14, through crosslinked polyethylene insulating block 12 and connecting strip 15 to 14 fixed of cable conductor, make 14 fixed more stable of cable conductor, and crosslinked polyethylene insulating block 12 and connecting strip 15 separation convenience, the wiring operation of 14 of cable conductor of being convenient for.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double extrusion's low smoke and zero halogen crosslinked wire, includes outer inoxidizing coating (1), its characterized in that: the inner protection layer (2) is connected to the inner portion of the outer protection layer (1), a pressure-proof cavity (3) is reserved between the outer protection layer (1) and the inner protection layer (2), a buffer strip (4) is installed on the inner side of the outer protection layer (1), a separation strip (5) is connected to the middle of the buffer strip (4), a buffer chamber (6) is formed between the buffer strip (4) and the separation strip (5), a filling chamber (7) is formed by surrounding the outer protection layer (1), the buffer strip (4) and the separation strip (5), and a flame-retardant filling block (8) is filled in the filling chamber (7);

the outside of interior inoxidizing coating (2) is connected with spacing (9), a plurality of support bars (10) are installed to the inboard of interior inoxidizing coating (2), and is adjacent it has support cavity (11) to reserve between support bar (10).

2. The double-layer extruded low-smoke zero-halogen crosslinked wire according to claim 1, wherein the number of the limiting strips (9) is twice that of the buffer strips (4), and two limiting strips (9) are bonded on the outer side of one buffer strip (4).

3. The double-layer extruded low-smoke zero-halogen crosslinked wire according to claim 1, wherein the buffer strip (4) and the separator strip (5) are both arc-shaped structures, and the concave surface of the buffer strip (4) is opposite to the concave surface of the separator strip (5).

4. The double-layer extruded low-smoke zero-halogen crosslinked wire according to claim 1, wherein the number of the support bars (10) is equal to that of the limit bars (9), and the support bars (10) and the limit bars (9) are arranged on the inner side and the outer side of the inner protective layer (2) in a staggered manner.

5. The double-layer extruded low-smoke zero-halogen crosslinked wire according to claim 1, characterized in that the inner side of the inner protective layer (2) is connected with a plurality of crosslinked polyethylene insulating blocks (12), an installation groove (13) is formed in the inner side of each crosslinked polyethylene insulating block (12), a cable core (14) is embedded in each installation groove (13), a connecting strip (15) is bonded on the outer side of each cable core (14), and a clamping arc groove (16) is formed in the position of the outer side of each connecting strip (15) corresponding to the cable core (14).

6. The double-layer extruded low-smoke zero-halogen crosslinked wire according to claim 5, wherein the connecting bar (15) is located between a plurality of crosslinked polyethylene insulating blocks (12), and a mounting gap is reserved between the connecting bar (15) and the crosslinked polyethylene insulating blocks (12).