CN213366235U - Flame-retardant and fire-resistant power cable - Google Patents

Abstract

The utility model discloses a flame-retardant fire-resistant power cable, which comprises a power cable, wherein an asbestos flame-retardant layer is arranged between a chloroprene rubber sheath and a fire-resistant fiber layer, so that the power cable is flame-retardant and fire-resistant, an anti-extrusion layer is arranged between a flame-retardant fire-resistant outer sleeve and an inner core, a buffer tube and a compression-resistant layer are arranged inside the compression-resistant layer, one end of the buffer tube is fixedly connected with the inner wall of the compression-resistant layer, one end of the buffer tube is fixedly connected with the periphery of the compression-resistant layer, the compression-resistant layer is extruded outside and is relieved by the buffer tube, so that the anti-extrusion performance of the power cable is improved, radiating tubes are arranged in the gaps of four electric wires and the inner core sheath, radiating fillers are arranged in the gaps of the electric wires and the radiating tubes in the inner core sheath, when local overheating occurs, heat is guided to the radiating tubes by the radiating, thereby achieving the purpose of heat dissipation.

Description

Flame-retardant and fire-resistant power cable

Technical Field

The utility model relates to a power cable technical field specifically is a fire-retardant fire-resistant power cable.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater, is gradually increased in proportion in the power line, is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system, and comprises various insulated power cables with voltage grades of 1-500KV and above.

When traditional power cable meets the conflagration, power cable catches fire easily, and the fire source spreads along power cable easily and enlarges the conflagration, and the power cable outside receives the extrusion, leads to the wire fracture easily to and the inside local high temperature of power cable, be difficult to the heat dissipation, influence power cable's electric conductive property.

To the above problems, the existing device is improved, and the flame-retardant fire-resistant power cable is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant fire-resistant power cable adopts this device to work to when having solved traditional power cable and having met the conflagration in the above-mentioned background, power cable catches fire easily, and the burning things which may cause a fire disaster stretches along power cable easily and enlarges the conflagration, and the power cable outside receives the extrusion, leads to the wire fracture easily, and the inside local high temperature of power cable, is difficult to the heat dissipation, influences power cable's the problem of conductivity.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant fire-resistant power cable, includes power cable, power cable includes fire-retardant fire-resistant overcoat, anti extrusion layer and inner core, is provided with anti extrusion layer and inner core on the inner wall of fire-retardant fire-resistant overcoat, and anti extrusion layer is located between fire-retardant fire-resistant overcoat and the inner core.

Furthermore, fire-retardant fire-resistant overcoat includes chloroprene rubber sheath, the fire-retardant layer of asbestos and fire-resistant fiber layer, fixedly connected with the fire-retardant layer of asbestos and fire-resistant fiber layer on the inner wall of chloroprene rubber sheath, and the fire-retardant layer of asbestos is located between chloroprene rubber sheath and the fire-resistant fiber layer.

Further, the anti-extrusion layer is provided with buffer tube and resistance to compression layer including compressing layer, buffer tube and resistance to compression layer, the inside on compression layer, and the one end on buffer tube and the inner wall fixed connection who compresses the layer, the one end on buffer tube and the periphery fixed connection on resistance to compression layer.

Further, the inner core comprises an inner core sheath, electric wires, radiating pipes and radiating fillers, the electric wires, the radiating pipes and the radiating fillers are arranged inside the inner core sheath, the number of the electric wires is four, the radiating pipes are located in gaps between the four electric wires and the inner core sheath, and the radiating fillers are arranged in gaps between the electric wires and the radiating pipes in the inner core sheath.

Further, the electric wire comprises a conducting wire and an insulating layer, and the outer periphery of the conducting wire is wrapped by the insulating layer.

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

1. the utility model provides a pair of fire-retardant fire-resistant power cable, through fixedly connected with fire-retardant layer of asbestos and fire-resistant fiber layer on the inner wall of chloroprene rubber sheath, and the fire-retardant level of asbestos lies in between chloroprene rubber sheath and the fire-resistant fiber layer to make the fire-retardant fire-resistant of power cable, solved when meeting the conflagration, power cable catches fire easily, the problem of expansion conflagration is stretched along power cable easily to the burning things which may cause a fire disaster.

2. The utility model provides a pair of fire-retardant fire-resistant power cable, through be provided with the anti-extrusion layer on the inner wall at fire-retardant fire-resistant overcoat, and the anti-extrusion layer is located between fire-retardant fire-resistant overcoat and the inner core, the inside that receives the pressure layer is provided with buffer tube and resistance to compression layer, and the one end of buffer tube and the inner wall fixed connection who receives the pressure layer, the one end of buffer tube and the periphery fixed connection on resistance to compression layer, receive external extrusion on the pressure layer, alleviate through the buffer tube, power cable's anti-extrusion performance has been improved, thereby avoided the power cable outside to receive the extrusion, lead to the wire.

3. The utility model provides a fire-retardant fire-resistant power cable, through be provided with the electric wire in the inside of inner core sheath, cooling tube and heat dissipation filler, and the electric wire is provided with four, the cooling tube is located among four electric wires and the space of inner core sheath, be provided with the heat dissipation filler among the gap of electric wire and cooling tube in the inner core sheath, when local overheat, the heat leads this section cooling tube through the heat dissipation filler on, the inside air of this section cooling tube is heated the inflation, make the inside hot-air of this section cooling tube pass through the cooling tube to other directions diffusion, thereby reach radiating purpose, avoid appearing because the inside local high temperature of power cable, be difficult to the heat dissipation, influence power cable's the problem of conductivity.

Drawings

Fig. 1 is an overall sectional view of the present invention;

FIG. 2 is a cross-sectional view of the flame-retardant and fire-resistant jacket of the present invention;

fig. 3 is a cross-sectional view of an anti-extrusion layer of the present invention;

fig. 4 is a sectional view of the inner core of the present invention.

In the figure: 1. a power cable; 11. a flame-retardant and fire-resistant outer sleeve; 111. a neoprene sheath; 112. an asbestos flame retardant layer; 113. a refractory fiber layer; 12. an anti-extrusion layer; 121. a pressure receiving layer; 122. a buffer tube; 123. A pressure resistant layer; 13. an inner core; 131. an inner core sheath; 132. an electric wire; 1321. a wire; 1322. an insulating layer; 133. a radiating pipe; 134. and (4) heat dissipation filler.

Detailed Description

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 and 2, a flame-retardant and fire-resistant power cable includes a power cable 1, the power cable 1 includes a flame-retardant and fire-resistant outer jacket 11, an anti-extrusion layer 12 and an inner core 13, the anti-extrusion layer 12 and the inner core 13 are disposed on an inner wall of the flame-retardant and fire-resistant outer jacket 11, the anti-extrusion layer 12 is disposed between the flame-retardant and fire-resistant outer jacket 11 and the inner core 13, the flame-retardant and fire-resistant outer jacket 11 includes a neoprene sheath 111, an asbestos flame-retardant layer 112 and a fire-resistant fiber layer 113, the inner wall of the neoprene sheath 111 is fixedly connected with the asbestos flame-retardant layer 112 and the fire-resistant fiber layer 113, the asbestos flame-retardant layer 112 is disposed between the neoprene sheath 111 and the fire-resistant fiber layer 113, so that the power cable 1 is flame-retardant and fire-resistant, the problem of when meeting the conflagration, power cable 1 easily catches fire, and the fire source easily spreads along power cable 1 and enlarges the conflagration is solved.

Referring to fig. 3, an anti-extrusion layer 12 includes a compression layer 121, a buffer tube 122 and a compression layer 123, the compression layer 121 is internally provided with the buffer tube 122 and the compression layer 123, one end of the buffer tube 122 is fixedly connected with the inner wall of the compression layer 121, one end of the buffer tube 122 is fixedly connected with the periphery of the compression layer 123, the anti-extrusion layer 12 is arranged on the inner wall of the flame-retardant and fire-resistant outer jacket 11, the anti-extrusion layer 12 is located between the flame-retardant and fire-resistant outer jacket 11 and the inner core 13, the buffer tube 122 and the compression layer 123 are arranged inside the compression layer 121, one end of the buffer tube 122 is fixedly connected with the inner wall of the compression layer 121, one end of the buffer tube 122 is fixedly connected with the periphery of the compression layer 123, the compression layer 121 is extruded from the outside, the buffer tube 122 is relieved to improve the anti-extrusion performance of the power cable 1, causing the wire 1321 to break.

Referring to fig. 4, a flame-retardant fire-resistant power cable, an inner core 13 includes an inner core sheath 131, electric wires 132, heat dissipation pipes 133 and heat dissipation fillers 134, the electric wires 132, the heat dissipation pipes 133 and the heat dissipation fillers 134 are disposed inside the inner core sheath 131, four electric wires 132 are disposed in the inner core sheath 131, the heat dissipation pipes 133 are disposed in gaps between the four electric wires 132 and the inner core sheath 131, the heat dissipation fillers 134 are disposed in gaps between the electric wires 132 and the heat dissipation pipes 133 in the inner core sheath 131, the electric wires 132 include wires 1321 and insulating layers 1322, an insulating layer 1322 is wrapped around the wires 1321, the electric wires 132, the heat dissipation pipes 133 and the heat dissipation fillers 134 are disposed inside the inner core sheath 131, the four electric wires 132 are disposed in gaps between the four electric wires 132 and the inner core sheath 131, and the heat dissipation fillers 134 are disposed in gaps between the electric wires 132, when local overheat, the heat is conducted to the section of the heat dissipation pipe 133 through the heat dissipation filler 134, and the internal air of the section of the heat dissipation pipe 133 is heated and expanded, so that the internal hot air of the section of the heat dissipation pipe 133 is diffused to other directions through the heat dissipation pipe 133, thereby achieving the purpose of heat dissipation, and avoiding the problem that the electric conductivity of the power cable 1 is affected due to the fact that the internal local high temperature of the power cable 1 is difficult to dissipate.

In summary, the following steps: the utility model provides a fire-retardant fire-resistant power cable, through fixedly connected with asbestos fire-retardant layer 112 and fire-resistant fiber layer 113 on the inner wall of chloroprene rubber sheath 111, and asbestos fire-retardant layer 112 is located between chloroprene rubber sheath 111 and fire-resistant fiber layer 113, thereby make power cable 1 fire-retardant fire-resistant, when having solved the conflagration, power cable 1 catches fire easily, the fire disaster easily spreads the problem of expanding the conflagration along power cable 1, be provided with anti extrusion layer 12 on the inner wall of fire-retardant fire-resistant overcoat 11, and anti extrusion layer 12 is located between fire-retardant fire-resistant overcoat 11 and inner core 13, the inside of compression layer 121 is provided with buffer tube 122 and compression layer 123, and the one end of buffer tube 122 and the inner wall fixed connection of compression layer 121, the one end of buffer tube 122 and the periphery fixed connection of compression layer 123, compression layer 121 receives external extrusion, alleviate through 122, the anti extrusion performance of power cable 1 is improved, thereby avoiding that power cable 1 is externally extruded, lead to wire 1321 to break, be provided with electric wire 132 in the inside of inner core sheath 131, cooling tube 133 and heat dissipation filler 134, and electric wire 132 is provided with four, cooling tube 133 is arranged in four electric wires 132 and inner core sheath 131's space, be provided with heat dissipation filler 134 among electric wire 132 in inner core sheath 131 and the gap of cooling tube 133, when local overheat, the heat leads to this section of cooling tube 133 through heat dissipation filler 134, the inside air of this section of cooling tube 133 is heated and expanded, make the inside hot air of this section of cooling tube 133 diffuse to other directions through cooling tube 133, thereby reach radiating purpose, avoid appearing because the inside local high temperature of power cable 1, be difficult to dispel the heat, influence the problem of power cable 1's electric conductivity.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A flame-retardant fire-resistant power cable, comprising a power cable (1), characterized in that: the power cable (1) comprises a flame-retardant and fire-resistant outer sleeve (11), an anti-extrusion layer (12) and an inner core (13), wherein the anti-extrusion layer (12) and the inner core (13) are arranged on the inner wall of the flame-retardant and fire-resistant outer sleeve (11), and the anti-extrusion layer (12) is located between the flame-retardant and fire-resistant outer sleeve (11) and the inner core (13).

2. A flame retardant and fire resistant power cable according to claim 1, characterized in that: the flame-retardant and fire-resistant outer sleeve (11) comprises a chloroprene rubber sheath (111), an asbestos flame-retardant layer (112) and a fire-resistant fiber layer (113), wherein the asbestos flame-retardant layer (112) and the fire-resistant fiber layer (113) are fixedly connected to the inner wall of the chloroprene rubber sheath (111), and the asbestos flame-retardant layer (112) is located between the chloroprene rubber sheath (111) and the fire-resistant fiber layer (113).

3. A flame retardant and fire resistant power cable according to claim 1, characterized in that: the anti-extrusion layer (12) comprises a compression layer (121), a buffer tube (122) and a compression layer (123), the buffer tube (122) and the compression layer (123) are arranged inside the compression layer (121), one end of the buffer tube (122) is fixedly connected with the inner wall of the compression layer (121), and one end of the buffer tube (122) is fixedly connected with the periphery of the compression layer (123).

4. A flame retardant and fire resistant power cable according to claim 1, characterized in that: the inner core (13) comprises an inner core sheath (131), electric wires (132), a radiating pipe (133) and radiating fillers (134), the electric wires (132), the radiating pipe (133) and the radiating fillers (134) are arranged inside the inner core sheath (131), the electric wires (132) are four, the radiating pipe (133) is located in a gap between the four electric wires (132) and the inner core sheath (131), and the radiating fillers (134) are arranged in gaps between the electric wires (132) and the radiating pipe (133) in the inner core sheath (131).

5. A flame retardant and fire resistant power cable according to claim 4, characterized in that: the electric wire (132) comprises a conducting wire (1321) and an insulating layer (1322), wherein the insulating layer (1322) wraps the periphery of the conducting wire (1321).

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