CN216902351U

CN216902351U - Halogen-free low-smoke flame-retardant power cable

Info

Publication number: CN216902351U
Application number: CN202123358070.9U
Authority: CN
Inventors: 刘齐军
Original assignee: Qiqihar Shenjiang Cable Manufacturing Co ltd
Current assignee: Qiqihar Shenjiang Cable Manufacturing Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-05
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to the technical field of power cables, and discloses a halogen-free low-smoke flame-retardant power cable which comprises a supporting electric core, wherein a cable wire is fixedly arranged on the outer surface of the supporting electric core, a filler is fixedly arranged on the outer surface of the cable wire, an inner armor layer is fixedly arranged on the outer surface of the filler, an insulating layer is fixedly arranged on the outer surface of the inner armor layer, a fireproof layer is fixedly arranged on the outer surface of the insulating layer, a heat conduction layer is fixedly arranged on the outer surface of the fireproof layer, an outer armor layer is fixedly arranged on the outer surface of the heat conduction layer, a gas guide groove is formed in the outer surface of the inner armor layer, the low-smoke halogen-free flame-retardant power cable generates a fire disaster when in use, the outer armor layer can protect the cable from being burnt and deformed by the fire disaster, the heat conduction layer conducts the heat of the outer layer to other parts of the cable, and can reduce the temperature of the fire-receiving part of the cable, when the heat-conducting layer loses the effect, inside flame retardant coating can guarantee that inside can not take place the burning phenomenon.

Description

Halogen-free low-smoke flame-retardant power cable

Technical Field

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

Background

The power cable is mainly used for a power transmission system, the traditional power cable adopts a PVC (polyvinyl chloride) insulating or protecting layer, when a fire disaster happens, a PVC mixture is easily decomposed after being heated to escape a large amount of highly toxic and corrosive HCL (hydrogen chloride) gas, a large amount of highly toxic dense smoke is generated, great life and property losses are caused, and great difficulty is brought to rescue work. For places with high requirements on safety and environmental protection, such as: in order to avoid and reduce fire and secondary damage caused by fire and the safety of operation of a power cable in crowded places such as stations, subways, airports, hospitals, large libraries, schools, markets and the like as much as possible, the power cable is required to have the characteristics of no halogen, low smoke, flame retardance and the like.

The fire hazard takes place when using for current power cable, and the outer protective rubber of cable can be burnt soft by the very first time, and outmost being lighted when reaching the burning critical point burns out the cable, and when the cable overload used, the temperature of cable can rise along with the time, makes the cable from inside burning.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects in the prior art, the utility model provides a halogen-free low-smoke flame-retardant power cable which can effectively solve the problem that the cable in the prior art starts to be natural from the inside due to the fact that the cable cannot resist external fire or high temperature and starts to burn from the outside.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model discloses a halogen-free low-smoke flame-retardant power cable which comprises a supporting electric core, wherein a cable wire is fixedly arranged on the outer surface of the supporting electric core, a filler is fixedly arranged on the outer surface of the cable wire, an inner armor layer is fixedly arranged on the outer surface of the filler, an insulating layer is fixedly arranged on the outer surface of the inner armor layer, a fireproof layer is fixedly arranged on the outer surface of the insulating layer, a heat conduction layer is fixedly arranged on the outer surface of the fireproof layer, an outer armor layer is fixedly arranged on the outer surface of the heat conduction layer, a gas guide groove is formed in the outer surface of the inner armor layer, and a heat exhaust groove is formed in the inner surface of the supporting electric core.

Furthermore, the filler is made of silica gel clay, and the silica gel clay has good high-temperature resistance and thermal conductivity.

Furthermore, the fireproof layer is made of thermoplastic low-smoke halogen-free flame-retardant insulating materials, so that the thermoplastic low-smoke halogen-free flame-retardant insulating materials cannot generate toxic gas when being combusted, and a large amount of smoke cannot be generated during combustion.

Furthermore, the outer surface of the outer armor layer is sprayed with antirust nano paint.

Furthermore, the insulating layer is made of carbon fiber composite cloth.

(III) advantageous effects

Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:

1. according to the utility model, through the design of increasing external fireproof heat insulation, the external fire source is primarily isolated by the external armor layer to directly ignite the cable, the heat conduction layer conducts the external temperature to other parts, and the fire-proof layer isolates the burnt outer layer, so that the cable can be ensured not to be burnt inside in a fire disaster, and the problem that the cable is burnt due to overhigh external temperature or the fact that the cable touches the fire source is avoided.

2. According to the utility model, through increasing an internal cooling design, through the matched use of the supporting battery cell and the temperature exhaust and exhaust groove, through the matched use of the inner armor layer and the gas guide groove, through the matched use of the gas guide groove and the temperature exhaust and exhaust groove, and through the matched use of the filler, the effect of cooling the cable wire is achieved, the problem that the internal temperature of the cable battery cell is sharply increased to cause the internal nature of the cable is avoided, and the effect of continuously cooling the internal part of the cable is realized.

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 utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a front view of the internal structure of the present invention;

FIG. 2 is a perspective view of an inner armor layer in an embodiment;

fig. 3 is a perspective structure diagram of a support cell in the embodiment;

the reference numerals in the drawings denote: 1. supporting the battery cell; 2. a cable wire; 3. a filler; 4. an inner armor layer; 5. an insulating layer; 6. a fire-resistant layer; 7. a heat conductive layer; 8. an outer armor layer; 9. a gas guiding groove; 10. a temperature exhaust and air exhaust groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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.

The present invention will be further described with reference to the following examples.

Examples

The utility model provides a fire-retardant power cable of halogen-free low smoke, as shown in fig. 1 to 3, including supporting electric core 1, the fixed surface of supporting electric core 1 installs cable wire 2, the fixed surface of cable wire 2 installs filler 3, armor 4 in the fixed surface of filler 3 installs, the fixed surface of interior armor 4 installs insulating layer 5, the fixed surface of insulating layer 5 installs flame retardant coating 6, the fixed surface of flame retardant coating 6 installs heat-conducting layer 7, the fixed surface of heat-conducting layer 7 installs outer armor 8, gaseous guiding groove 9 has been seted up to the surface of interior armor 4, the interior surface of supporting electric core 1 has seted up row's of temperature exhaust groove 10.

As shown in fig. 1, the filler 3 is made of silica gel.

As shown in FIG. 1, the fireproof layer 6 is made of thermoplastic low-smoke halogen-free flame-retardant insulating material.

As shown in fig. 1, the outer surface of the outer armor layer 8 is sprayed with antirust nano paint.

As shown in fig. 1, the insulating layer 5 is made of carbon fiber composite cloth.

In this embodiment, the staff puts into wall body or underground with the cable, when the conflagration breaing out, outer armor 8 can protect the cable can not burnt by the conflagration and warp, other positions of heat-conducting layer 7 with outer heat conduction to cable, can reduce the temperature of the part of receiving a fire of cable, lose the effect when heat-conducting layer 7, inside flame retardant coating 6 can guarantee that the inside phenomenon of can not taking place to burn, outside air gets into on the gas guiding groove 9 on the outer armor 8 through row warm exhaust groove 10, carry out the heat energy exchange with the inside temperature of cable and outside air, can guarantee that the inside temperature of cable keeps invariable.

To sum up, this do not have steamed low fire-retardant power cable of cigarette and take place the conflagration when using, outer armor 8 can protect the cable can not burnt by the conflagration and warp, heat-conducting layer 7 conducts other positions of outer heat to cable, can reduce the temperature of the part of receiving a fire of cable, lose the effect when heat-conducting layer 7, inside flame retardant coating 6 can guarantee that inside can not take place the burning phenomenon, outside air gets into on the gas guiding groove 9 on the outer armor 8 through exhaust-temperature exhaust groove 10, carry out the heat energy exchange with the inside temperature of cable and outside air, can guarantee that the inside temperature of cable keeps invariable.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a there is not steamed low fire-retardant power cable of cigarette, includes support electric core (1), its characterized in that: the utility model discloses a cable protection device, including support electric core (1), outer fixed surface installs cable wire (2), the outer fixed surface of cable wire (2) installs filler (3), armor (4) in the outer fixed surface of filler (3) installs, the outer fixed surface of interior armor (4) installs insulating layer (5), the outer fixed surface of insulating layer (5) installs flame retardant coating (6), the outer fixed surface of flame retardant coating (6) installs heat-conducting layer (7), the outer fixed surface of heat-conducting layer (7) installs outer armor (8), gaseous guiding groove (9) have been seted up to the surface of interior armor (4), row's of temperature exhaust groove (10) have been seted up to the internal surface of support electric core (1).

2. The halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: the filler (3) is made of silica gel mud.

3. The halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: the fireproof layer (6) is made of thermoplastic low-smoke halogen-free flame-retardant insulating material.

4. A halogen-free low-smoke flame-retardant power cable according to claim 3, characterized in that: and the outer surface of the outer armor layer (8) is sprayed with antirust nano paint.

5. A halogen-free low-smoke flame-retardant power cable according to claim 3, characterized in that: the insulating layer (5) is made of carbon fiber composite cloth.