CN110718328B

CN110718328B - Fireproof hanging type cable

Info

Publication number: CN110718328B
Application number: CN201910999900.4A
Authority: CN
Inventors: 楼益强
Original assignee: Dongguan Boli Electric Co ltd
Current assignee: DONGGUAN BOLI ELECTRIC Co.,Ltd.
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2021-05-04
Anticipated expiration: 2039-10-21
Also published as: CN110718328A

Abstract

The invention discloses a fireproof hanging type cable which comprises a vertically hung cable main body, wherein the cable main body comprises a cable outer tegument and an inner core wire arranged in the cable outer tegument, more than one guide rod is fixedly arranged outside the cable outer tegument and extends and is arranged along the length direction of the cable main body, more than one fireproof ring is arranged on the guide rod at equal intervals along the cable main body, a through hole is formed in the middle of each fireproof ring, the cable outer tegument passes through the through holes of the fireproof rings, and the fireproof rings are fixed on the cable main body through more than one guide rod. The cable has good fireproof capacity, can quickly extinguish fire when spontaneous combustion occurs, forms a protective layer at the fire-starting position to prevent flame from spreading, and simultaneously carries out secondary repair protection on the outer tegument layer of the damaged cable.

Description

Fireproof hanging type cable

Technical Field

The invention relates to a cable, in particular to a fireproof hanging type cable.

Background

At present, the cable distributes and uses in each field, and the cable is after using for a long time, often because local short circuit and the scheduling problem of spontaneous combustion appear to reasons such as ageing, in case the spontaneous combustion of cable somewhere, flame or destruction cable tegument to along the rapid spread intensity of a fire of cable tegument, lead to adjacent cable also to catch fire equally, and then lead to the large tracts of land to catch fire, finally cause the getting on fire of building body, cause serious economic loss and casualties. The current way of putting up the mode of shower nozzle and come the response water spray, and then reach and put out a fire, but this kind of mode is easy wrong report to police, and the cable tegument top layer is damaged after extinguishing flame moreover, exposes the heart yearn, leads to short circuit once more at last, influences the use, so its use still exists a lot of not enoughly.

Disclosure of Invention

The invention aims to solve the technical problem that the fireproof hanging type cable has very good fireproof performance, is particularly suitable for hanging use, can quickly extinguish flame during spontaneous combustion, and then builds a safety protection layer outside a damaged point to perform secondary protection on the damaged cable, so that the safety of the cable can be improved, and the cable can be continuously used.

The invention is realized by the following technical scheme: the utility model provides a hanging cable of fire prevention type, includes the cable main part that hangs perpendicularly, this cable main part includes the outer tegument of cable and sets up in the outer intraformational heart yearn of quilt of cable, the outside of the outer tegument of cable is fixed and is provided with the more than one guide arm, and this guide arm extends along the length direction of cable main part and lays, lay more than one fire prevention ring along cable main part equidistance on the guide arm, the centre of fire prevention ring has a through-hole, and the outer tegument of cable passes the through-hole in the middle of each fire prevention ring, and the fire prevention ring is fixed on cable main part through.

According to the preferable technical scheme, the guide rods respectively comprise a metal filament, two ends of the metal filament are inserted into the outer covering layer of the cable and fixed by glue, a flexible air inflation layer wraps the outside of the metal filament, an air storage cavity is formed in the flexible air inflation layer, and the air storage cavity is filled with air to enable the flexible air inflation layer to expand.

As a preferable technical scheme, a penetrating guide hole is formed in the position, opposite to the guide rod, of the fireproof ring, the guide rod penetrates through the guide hole, and the expanded guide rod is tightly pressed and fixed with the inner wall of the guide hole.

As a preferable technical scheme, the through hole is not in contact with the cable outer layer, and a gap distance of 1-2mm is formed.

As an optimized technical scheme, the fireproof ring comprises a main body framework, more than one filling cavity is formed in the middle of the main body framework in a circle around the main body framework, materials are filled in the filling cavity, and the through hole is formed in the middle of the main body framework.

According to the preferable technical scheme, the material is sand, the outer wall surface of the main body framework is wrapped with a first fireproof layer, and the inner wall of the through hole is provided with a second fireproof layer.

As a preferred technical scheme, the first fireproof layer and the second fireproof layer are both made of aluminum foil paper materials and are bonded on the main body framework.

As a preferred technical scheme, the gas is air or inert gas, the flexible inflation layer is made of elastic rubber materials, and when no gas exists in the gas storage cavity, the fireproof ring is separated from the guide rod.

The invention has the beneficial effects that: the invention can be arranged on the cable in a segmented manner, can protect the cable section which needs to be protected in a key way, can extinguish flame at the first time, can build a protective layer at the damaged position to protect the damaged point, can prevent the core wire from being exposed, can still be used safely for a period of time without maintenance, and can well protect the core wire inside.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of the structure of the fire collar of the present invention;

FIG. 3 is a schematic cross-sectional view of a guide rod;

fig. 4 is a diagram showing a state of use of the present invention after ignition.

Detailed Description

As shown in fig. 1, the fireproof hanging type cable comprises a vertically hanging cable body, wherein the cable body comprises a cable outer layer 1 and an inner core wire 3 arranged in the cable outer layer 1, more than one guide rod 4 is fixedly arranged outside the cable outer layer 1, the guide rod 4 extends along the length direction of the cable body and is arranged, more than one fireproof ring 2 is equidistantly arranged on the guide rod 4 along the cable body, a through hole 6 is formed in the middle of each fireproof ring 2, the cable outer layer 1 penetrates through the through hole 6 in the middle of each fireproof ring 2, and the fireproof rings 2 are fixed on the cable body through more than one guide rod 4.

In this embodiment, as shown in fig. 3, each guide rod 4 includes a metal filament 43, two ends of each metal filament 43 are inserted into the cable jacket layer 1 and fixed by glue, a flexible air-filled layer 41 is wrapped outside each metal filament 43, an air storage cavity 42 is formed inside each flexible air-filled layer 41, and the air storage cavity 42 is filled with air and expands the flexible air-filled layer.

Wherein, the position of the fireproof ring 2 facing the guide rod 4 is provided with a through guide hole 7, the guide rod 4 passes through the guide hole 7, and the expanded guide rod 4 is pressed and fixed with the inner wall of the guide hole 7. The through hole 6 is not contacted with the cable outer layer 1, and a gap distance of 1-2mm is formed. The gap distance allows the flame ring to slide down the cable jacket.

As shown in fig. 2, the fire-proof ring 2 includes a main body frame 5, more than one filling cavity 8 is formed in the middle of the main body frame 5 around the main body frame 5, the filling cavity 8 is filled with a material, and the through hole 6 is formed in the middle of the main body frame 5. In addition, in order to increase the fire proofness, specially wrap up the first flame retardant coating 9 of one deck at the outer wall of main part skeleton, the through-hole inner wall sets up one deck second flame retardant coating 11, can not lighted when it contacts with flame like this to can utilize the physics friction mode to extinguish the flame on the cable outer tegument fast, reach the purpose of putting out a fire, whole fire prevention ring's whole needs certain weight, can descend and slide under the action of gravity fast like this when the guide arm is damaged.

In this embodiment, the first fireproof layer 9 and the second fireproof layer 11 are made of aluminum-foil paper, and are bonded to the main body framework 5. Of course, fire-retardant paints may also be used, but the service life of the fire-retardant paint is not long enough, and aluminium foil paper is preferred.

In this embodiment, gas is air or inert gas, the flexible layer of aerifing adopts elastic rubber material to make, when no gas in the gas storage chamber, separation between fire prevention ring and the guide arm, when the spontaneous combustion takes place for the cable somewhere and when producing the flame, flame can make cable tegillum local damage, and the flame can make the guide arm in this region lighted and damaged, because the guide arm is damaged, so inside gas is discharged, the diameter of each guide rod diminishes, originally the balanced structure through the fixed fire prevention ring of guide arm is broken this moment, all fire prevention rings slide down under the action of gravity, the fire prevention ring is through the time, it can take place physical frictional contact with the cable, and then reach the mesh of putting out a fire, if the inside inert gas that fills of guide arm, so can reduce the air content in the combustion area to a certain extent, reduce the intensity of a fire.

Because the outer layer of the cable is a combustible layer, the shape of the cable is changed after the cable is ignited, the outer diameter of a damaged part is increased, the downward sliding fireproof ring is contacted with the outer layer of the ignited cable, because the cable outer tegument layer is viscous in a burning melting state, the space between the through hole and the cable outer tegument layer can be continuously filled after the cable outer tegument layer is contacted with the through hole of the fireproof ring inner ring, therefore, the fireproof ring slides downwards for a certain distance with the outer layer of the cable in a partially molten state after passing through the combustion area, and is cooled and dried after being far away from the combustion area, so that the position of the fire-proof ring at the bottommost part is fixed and the fire-proof ring can not slide downwards any more, and meanwhile, the fire-proof ring at the top part is continuously superposed on the fire-proof ring at the bottommost part to form a secondary protective layer, the service life of the cable is prolonged due to the damage of the outer layer of the protective cable, as shown in figure 4.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a hanging cable of fire prevention type which characterized in that: the cable comprises a vertically suspended cable main body, wherein the cable main body comprises a cable outer tegument and an inner core wire arranged in the cable outer tegument, more than one guide rod is fixedly arranged outside the cable outer tegument and extends along the length direction of the cable main body, more than one fireproof ring is arranged on the guide rod at equal intervals along the cable main body, a through hole is formed in the middle of each fireproof ring, the cable outer tegument passes through the through hole in the middle of each fireproof ring, and the fireproof rings are fixed on the cable main body through more than one guide rod;

the guide rods comprise metal filaments, two ends of each metal filament are inserted into the outer coating layer of the cable and are fixed by glue, a flexible inflation layer is wrapped outside each metal filament, a gas storage cavity is formed inside each flexible inflation layer, and each gas storage cavity is filled with gas to enable the flexible inflation layer to expand;

and a penetrating guide hole is formed in the position, which is opposite to the guide rod, of the fireproof ring, the guide rod penetrates through the guide hole, and the expanded guide rod is tightly pressed and fixed with the inner wall of the guide hole.

2. The fire-resistant hanging cable according to claim 1, wherein: the through hole is not in contact with the cable outer layer, and a gap distance of 1-2mm is formed.

3. The fire-resistant hanging cable according to claim 1, wherein: the fireproof ring comprises a main body framework, more than one filling cavity is formed in the middle of the main body framework in a circle around the main body framework, materials are filled in the filling cavity, and the through hole is formed in the middle of the main body framework.

4. A fire-resistant hanging cable as claimed in claim 3, wherein: the material is sand, the outer wall surface of the main body framework is wrapped with a first fireproof layer, and the inner wall of the through hole is provided with a second fireproof layer.

5. The fire-resistant hanging cable according to claim 4, wherein: first flame retardant coating and second flame retardant coating all adopt aluminium foil paper material to make, and it bonds on the main part skeleton.

6. The fire-resistant hanging cable according to claim 1, wherein: the gas is air or inert gas, the flexible inflatable layer is made of elastic rubber materials, and when no gas exists in the gas storage cavity, the fireproof ring is separated from the guide rod.