CN210271838U

CN210271838U - Flexible fireproof cable

Info

Publication number: CN210271838U
Application number: CN201921086009.3U
Authority: CN
Inventors: 陈龙; 叶斌; 王平; 蹇锡高
Original assignee: ANHUI HUALING CABLE GROUP CO LTD
Current assignee: ANHUI HUALING CABLE GROUP CO LTD
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-07
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a flexible fireproof cable, including the sheath in the outside, the inboard parcel of sheath has fire-retardant layer, insulating layer, fire prevention bag pipe, flame retardant coating and silica gel cover in proper order, fire prevention bag pipe and silica gel cover staggered arrangement, the space department in the inside of insulating layer and be located the fire prevention bag pipe and the silica gel cover outside is filled to the flame retardant coating. The utility model discloses in, the one end of fire prevention bag pipe is passed through the flange and is connected with flame retardant gas's air feeder, when the sheath was burnt, flame retardant layer can effectively prevent the direct combustion of flame to the insulating layer, thereby make the insulating layer keep permanent thermal-insulated effect by the in-process of burning at the cable, the heat is difficult to the inside transmission of insulating layer, when the temperature on flame retardant layer was too high, discharge gate terminal surface with the laminating of flame retardant layer can be melted, form the opening, it spills over to be located the inside flame retardant gas of fire prevention bag pipe, the processing of putting out a fire, at the in-process of putting out, air feeder continuously supplies flame retardant gas, make flame finally put out.

Description

Flexible fireproof cable

Technical Field

The utility model relates to a cable field specifically is a flexible fireproof cable.

Background

The demands of cables in actual life are greatly increased, such as buildings, tunnels, airports and other places which all need long cable fire-resistant time, the existing cables are poor in fire-resistant performance and cannot guarantee electrification once being burnt, and some public places such as passageway emergency lighting, fire-proof alarm devices and automatic fire-fighting facilities need to be kept electrified normally within a specified time when a fire disaster occurs, and the existing cables have defects due to natural defects in structural design.

To this end, we propose a flexible fire-proof cable to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible fireproof cable to the problem that needs constantly change the frock in the small batch production process that proposes in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flexible fireproof cable, includes the sheath in the outside, the inboard parcel in proper order of sheath has fire-retardant layer, insulating layer, fire prevention bag pipe, flame retardant coating and silica gel cover, fire prevention bag pipe and silica gel cover staggered arrangement, the flame retardant coating is filled in the inside of insulating layer and is located the space department in the fire prevention bag pipe and the silica gel cover outside.

Preferably, the fire-retardant layer is attached to the heat-insulating layer, and the end parts of the discharge ports uniformly arranged on the fire-proof bag tube penetrate through the heat-insulating layer and are attached to the inner wall of the fire-retardant layer.

Preferably, the material of silica gel cover is ceramic silica gel, and the inside of silica gel cover all wraps up there is the wire.

Preferably, the material of the flame-retardant layer is aluminum foil, and the outer surface of the flame-retardant layer is serrated.

Preferably, a wrapping layer is wrapped between the lead and the silica gel sleeve and is wound on the surface of the lead.

Preferably, the end face of the sheath is connected with a flange, and the flange is connected with an air supply device.

Preferably, a plurality of air inlets are uniformly arranged on the end face of the flange, and the air inlets correspond to the fireproof bag tubes.

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

1. the utility model discloses in, lay a plurality of fire prevention bag pipe in the inside of sheath, and the one end of fire prevention bag pipe is passed through the flange and is connected with flame retardant gas's air feeder, when the sheath is burnt, fire-retardant layer can effectively prevent the direct combustion of flame to the insulating layer, thereby make the insulating layer keep permanent thermal-insulated effect at the in-process that the cable was burnt, the heat is difficult to the inside transmission of insulating layer, when the high temperature on fire-retardant layer, the discharge gate terminal surface with the laminating of fire-retardant layer can be melted, form the opening, it spills over to be located the inside flame retardant gas of fire prevention bag pipe, the processing of putting out a fire, at the in-process of putting out, air feeder continuously supplies flame retardant gas, make flame finally put out.

2. The utility model discloses in, the flame retardant gas that air feeder sent into in the fire prevention bag pipe keeps constant pressure, in case pressure variation appears, then shows that the fire prevention bag pipe breaks, and the sheath receives the damage to be convenient for monitor the circuit condition constantly.

Description of the 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 these drawings without creative efforts.

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

fig. 2 is a schematic structural view of the middle flange of the present invention.

In the figure: 1. a sheath; 2. a flame retardant layer; 3. a thermal insulation layer; 4. a fire-resistant bag tube; 5. a refractory layer; 6. a silica gel sleeve; 7. a discharge port; 8. a wire; 9. a belting layer; 10. a flange; 11. an air inlet.

The specific implementation mode is as follows:

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 an embodiment: a flexible fireproof cable comprises a sheath 1 on the outermost side, wherein the inner side of the sheath 1 is sequentially wrapped with a flame-retardant layer 2, a heat-insulating layer 3, a fireproof bag tube 4, a flame-retardant layer 5 and a silica gel sleeve 6, the fireproof bag tube 4 and the silica gel sleeve 6 are arranged in a staggered manner, the flame-retardant layer 5 is filled in the heat-insulating layer 3 and is positioned in a gap between the outer sides of the fireproof bag tube 4 and the silica gel sleeve 6, the sheath 1 is positioned on the outermost layer to protect the flame-retardant layer 2 and the heat-insulating layer 3, when the sheath 1 is burnt, heat is transmitted to the inner side through the sheath 1, the flame-retardant layer 2 firstly blocks the heat, the heat is isolated on the outer side by the heat-insulating layer 3, the transmission of heat energy is blocked, as the end part of a discharge port 7 on the fireproof bag tube 4 passes through the heat-insulating layer 3 and is attached to the inner wall, and (5) carrying out fire extinguishing treatment.

Silica gel cover 6's material is ceramic silica gel, and silica gel cover 6's inside all wraps up has wire 8, fire-retardant layer 2's material is the aluminium foil, fire-retardant layer 2's surface is the cockscomb structure, the parcel has band layer 9 between wire 8 and the silica gel cover 6, band layer 9 is around the surface of locating wire 8, ceramic silica gel has the characteristic that becomes comparatively hard after the sintering and can further protect wire 8, and the aluminium foil has better plasticity, characteristics such as incombustible, can the direct combustion of separation flame to insulating layer 3, thereby improve insulating layer 3's effective heat-proof time.

The terminal surface department of sheath 1 is connected with flange 10, flange 10 is connected with air feeder, evenly arranged a plurality of air inlets 11 on the terminal surface of flange 10, air inlet 11 corresponds with fire prevention bag pipe 4, constantly supply flame retardant gas in to fire prevention bag pipe 4 through air feeder, even if melt the back at 7 tip of discharge gate, still have sufficient flame retardant gas to flow, realize fire-retardant, judge whether damaged appears in sheath 1 according to air feed pressure's change simultaneously.

The working principle is as follows: when sheath 1 is by the burning, the heat is through sheath 1 to inside transmission, fire-retardant layer 2 at first blocks, insulating layer 3 is completely cut off the heat in the outside, the transmission of separation heat energy, because the tip of fire prevention bag pipe 4 upper discharge gate 7 passes insulating layer 3 and with the inner wall laminating of fire-retardant layer 2, when fire-retardant layer 2's temperature is too high, can melt discharge gate 7 tip, form the opening, it spills over to be located the inside flame retardant gas of fire prevention bag pipe 4, put out a fire and handle, simultaneously the terminal surface department of sheath 1 is connected with air feeder through flange 10, make flame retardant gas continuously provided in fire prevention bag pipe 4, guarantee that flame is put out.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flexible fireproof cable, includes sheath (1) in the outside, its characterized in that, the inboard parcel in proper order of sheath (1) has fire-retardant layer (2), insulating layer (3), fire prevention bag pipe (4), flame retardant coating (5) and silica gel cover (6), fire prevention bag pipe (4) and silica gel cover (6) staggered arrangement, flame retardant coating (5) are filled in the inside of insulating layer (3) and are located the space department in fire prevention bag pipe (4) and silica gel cover (6) outside.

2. The flexible fireproof cable of claim 1, wherein the flame retardant layer (2) is attached to the heat insulating layer (3), and the ends of the uniformly arranged discharge holes (7) on the fireproof bag tube (4) penetrate through the heat insulating layer (3) and are attached to the inner wall of the flame retardant layer (2).

3. The flexible fireproof cable according to claim 1, wherein the silicone sleeve (6) is made of ceramic silicone, and the silicone sleeve (6) is wrapped with the conductive wire (8).

4. A flexible fireproof cable according to claim 1, wherein the material of the flame retardant layer (2) is aluminum foil, and the outer surface of the flame retardant layer (2) is serrated.

5. A flexible fireproof cable according to claim 3, wherein a wrapping layer (9) is wrapped between the conducting wire (8) and the silicone sheath (6), and the wrapping layer (9) is wound around the surface of the conducting wire (8).

6. A flexible fire-proof cable according to claim 1, characterized in that a flange (10) is connected to the end face of the sheath (1), and the flange (10) is connected to a gas supply device.

7. Flexible fire-protection cable according to claim 6, characterised in that a plurality of air inlets (11) are uniformly arranged on the end face of the flange (10), said air inlets (11) corresponding to the fire-protection capsule (4).