CN216623844U

CN216623844U - Low-smoke halogen-free cable

Info

Publication number: CN216623844U
Application number: CN202122951652.1U
Authority: CN
Inventors: 吴庆钟
Original assignee: Fujian Jiangnan Shunda Cable Co ltd
Current assignee: Fujian Jiangnan Shunda Cable Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-27
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free cable which comprises a low-smoke halogen-free outer sheath and wires, wherein a flame-retardant layer is fixedly arranged inside the low-smoke halogen-free outer sheath, a reinforcing layer is fixedly arranged inside the flame-retardant layer, a low-smoke halogen-free inner sheath is arranged inside the reinforcing layer, a shielding layer is arranged inside the low-smoke halogen-free inner sheath, an insulating layer is arranged inside the shielding layer, a heat-insulating wire sleeve is arranged inside the insulating layer, and a plurality of wires are arranged inside the heat-insulating wire sleeve. Install the wire in the inside of thermal-insulated wire cover and make the wire and the area of contact of thermal-insulated wire cover diminish the heat dissipation of the wire of being convenient for through the interior support strip that sets up, and no longer the mutual contact between the wire has avoided thermal mutual influence, be provided with the louvre in addition on low smoke and zero halogen inner sheath and also can help the quick the giving out of heat with interior convex block, and the enhancement layer that sets up makes the bulk strength grow of cable not fragile with the enhancement strip.

Description

Low-smoke halogen-free cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free cable.

Background

Low smoke and zero halogen cable is one of cable industry cable sheath, its fire resistance is good, and there is not haloid acid gas to emit when the cable burns, the smoke volume of cable is also little, but low smoke and zero halogen cable under the prior art its mechanical properties is poor in the in-service use, yielding, easy fracture, and long service life, the in-process wire that is not good at the use of radiating effect of cable can produce more heat in addition, if can not be timely distribute away, along with the increase of load, calorific capacity can increase, lead to the cable current-carrying capacity to reduce, influence the normal use of cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-smoke halogen-free 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 low smoke and zero halogen cable, includes low smoke and zero halogen oversheath and wire, the fixed fire-retardant layer that is provided with in inside of low smoke and zero halogen oversheath, the fixed enhancement layer that is provided with in inside on fire-retardant layer, the inside of enhancement layer is provided with low smoke and zero halogen inner sheath, the inside of low smoke and zero halogen inner sheath is provided with the shielding layer, the inside of shielding layer is provided with thermal-insulated wire cover, the internally mounted of thermal-insulated wire cover has a plurality of wires.

Preferably, a plurality of reinforcing bars are fixedly arranged on the circumference of the outer side of the low-smoke halogen-free outer sheath.

Preferably, a plurality of heat dissipation holes are formed in the low-smoke halogen-free inner sheath, and a plurality of inner convex blocks are arranged on the inner circumference of the low-smoke halogen-free inner sheath.

Preferably, the surface of the inner convex block is free of an arc surface, the inner convex block is in contact with the shielding layer, and a certain space is formed between the low-smoke halogen-free inner sheath and the shielding layer.

Preferably, the heat-insulating wire sleeve is provided with a plurality of wire holes, and wires are inserted into the wire holes.

Preferably, a heat dissipation long groove is formed in a wire guide hole in the heat insulation wire guide sleeve, and an inner support bar is arranged in the wire guide hole and in a staggered manner with the heat dissipation long groove.

Compared with the prior art, the utility model has the beneficial effects that:

through the practicality of this technical scheme, install the wire in the inside of thermal-insulated wire cover and make the wire and the heat dissipation of the wire of being convenient for that the area of contact of thermal-insulated wire cover diminishes through the interior support strip that sets up, and no longer the mutual contact has avoided thermal mutual influence between the wire, be provided with the louvre in addition on low smoke and zero halogen inner sheath and also can help the quick the giving out of heat with interior convex block, and the enhancement layer that sets up makes the bulk strength grow of cable not fragile with the reinforcement strip.

Drawings

FIG. 1 is an exploded schematic view of a cable;

FIG. 2 is a schematic structural diagram of a low smoke zero halogen inner sheath;

fig. 3 is a schematic view of a thermally insulated wire cover.

In the figure: 1. a low smoke zero halogen outer sheath; 11. a reinforcing strip; 2. a flame retardant layer; 3. a reinforcing layer; 4. a low-smoke halogen-free inner sheath; 41. heat dissipation holes; 42. an inner bump; 5. a shielding layer; 6. an insulating layer; 7. a thermally insulated wire cover; 71. a wire guide hole; 711. a heat dissipation long groove; 712. an inner supporting bar; 8. and (4) conducting wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution:

the utility model provides a low smoke and zero halogen cable, includes low smoke and zero halogen oversheath 1 and wire 8, and the fixed outside circumference that is provided with fire-retardant layer 2 and low smoke and zero halogen oversheath 1 in low smoke and zero halogen oversheath 1 is fixed and is provided with a plurality of enhancement strips 11, and strengthens that the length that sets up and strengthen strip 11 for integrated into one piece between strip 11 and low smoke and zero halogen oversheath 1 equals and strengthen strip 11 for evenly setting up the distance between the enhancement strip 11 and equal.

The fixed enhancement layer 3 that is provided with in inside of fire-retardant layer 2, the inside of enhancement layer 3 is provided with low smoke and zero halogen inner sheath 4, the inside of low smoke and zero halogen inner sheath 4 is provided with shielding layer 5 and has seted up a plurality of louvres 41 on the low smoke and zero halogen inner sheath 4, and between the interior lug 42 of louvre 41 was seted up, the inside circumference of low smoke and zero halogen inner sheath 4 is provided with a plurality of interior lugs 42 and the surface of interior lug 42 does not have the arc surface and interior lug 42 contacts with shielding layer 5 in addition, make the area of contact between low smoke and zero halogen inner sheath 4 and the shielding layer 5 diminish under the effect of lug 42 including forming certain space between low smoke and zero halogen inner sheath 4 and the shielding layer 5.

The shielding layer 5 is internally provided with an insulating layer 6, the insulating layer 6 is internally provided with a heat-insulating wire sleeve 7, the heat-insulating wire sleeve 7 is internally provided with a plurality of wires 8, the heat-insulating wire sleeve 7 is provided with a plurality of wire holes 71, the wire holes 71 are inserted with wire holes 71, the wire holes 71 of the heat-insulating wire sleeve 7 are provided with heat dissipation long grooves 711, the wire holes 71 are internally provided with inner support bars 712 in a staggered manner, the wires 8 are in contact with the inner support bars 712 inside the wire holes 71, the diameter of the wires 8 is smaller than that of the wire holes 71, and the heat dissipation long grooves 711 on the wire holes 71 penetrate through the heat-insulating wire sleeve 7.

When the low-smoke halogen-free outer sheath 1 works, the reinforcing strips 11 arranged on the outer side of the low-smoke halogen-free outer sheath 1 enable the overall strength of cables to be increased, the service life is longer, in addition, certain gaps exist among the cables under the action of the reinforcing strips 11 when the cables are gathered together under the action of the reinforcing strips 11, the heat dissipation of the cables in the working process is facilitated, the reinforcing layers 3 arranged inside the low-smoke halogen-free outer sheath 1 also play a role in reinforcing the cables to enable the cables not to be easily deformed and damaged, the heat generated by the wires 8 can be timely dissipated through the heat dissipation holes 41 arranged on the low-smoke halogen-free inner sheath 4 arranged on the inner side of the reinforcing layers 3, the contact area between the low-smoke halogen-free inner sheath 4 and the shielding layers 5 arranged inside the low-smoke halogen-free outer sheath 4 is reduced through the arranged inner bumps 42 to facilitate the heat circulation, and the heat insulation wire sleeves 7 arranged on the innermost portion of the cables are separated and do not contact with each other under the action of the wire holes 71, and the heat insulation wire sleeves 8 are prevented from being generated by the wires 8 The heat of carrying out mutual influence, and wire 8 is installed in wire guide 71's inside through interior support bar 712 for the area of contact between wire 8 and the thermal-insulated wire cover 7 is less leaves the heat dissipation space, can make the heat in time transmit away from heat dissipation elongated slot 711, makes the radiating effect of whole cable very good can guarantee the long-time normal use of cable, and moreover just oversheath and inner sheath all are made by low smoke and zero halogen material and have guaranteed the low smoke and zero halogen's of cable operation requirement.

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. A low smoke and zero halogen cable, includes low smoke and zero halogen oversheath (1) and wire (8), its characterized in that: the inner part of the low-smoke halogen-free outer sheath (1) is fixedly provided with a flame-retardant layer (2), a reinforcing layer (3) is fixedly arranged inside the flame-retardant layer (2), a low-smoke halogen-free inner sheath (4) is arranged inside the reinforcing layer (3), a plurality of radiating holes (41) are formed in the low-smoke halogen-free inner sheath (4), and a plurality of inner bumps (42) are arranged on the inner circumference of the low-smoke halogen-free inner sheath (4), a shielding layer (5) is arranged inside the low-smoke halogen-free inner sheath (4), an insulating layer (6) is arranged inside the shielding layer (5), a heat insulation wire sleeve (7) is arranged inside the insulating layer (6), a heat dissipation elongated slot (711) is arranged in a wire guide hole (71) on the heat insulation wire sleeve (7), and the wire guide hole (71) is provided with an inner supporting bar (712) which is staggered with the heat dissipation long groove (711), a plurality of leads (8) are arranged in the heat insulation lead sleeve (7).

2. A low smoke zero halogen cable according to claim 1, characterized in that: the outer circumference of the low-smoke zero-halogen outer sheath (1) is fixedly provided with a plurality of reinforcing bars (11).

3. A low smoke zero halogen cable according to claim 1, characterized in that: the surface of the inner convex block (42) is free of an arc surface, the inner convex block (42) is in contact with the shielding layer (5), and a certain space is formed between the low-smoke halogen-free inner sheath (4) and the shielding layer (5).

4. A low smoke zero halogen cable according to claim 1, characterized in that: a plurality of wire holes (71) are formed in the heat insulation wire sleeve (7), and wires (8) are inserted into the wire holes (71).