CN211427914U

CN211427914U - Flame-retardant fire-resistant halogen-free low-smoke power cable

Info

Publication number: CN211427914U
Application number: CN202020469311.3U
Authority: CN
Inventors: 谢玉伸
Original assignee: Shenzhen Honganda Cable Co ltd
Current assignee: Shenzhen Honganda Cable Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-09-04
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a fire-retardant fire-resistant type does not have steamed low cigarette power cable, including protective outer cover, protective outer cover's inside is provided with the articulamentum, and is connected with between protective outer cover and the articulamentum and is used for fire-retardant composite bed, fixed connection between protective outer cover, fire-retardant composite bed and the articulamentum, the inside of articulamentum is provided with the crushing layer. Fire-retardant fire-resistant type do not have steamed low cigarette power cable, through the protective sheath that sets up, compressive layer and support frame, adopt the wire net, strengthen the cooperation of metal isotructure and use, intensity when can guaranteeing the cable use, the resistance to compression effect has been improved, can not fracture because of exogenic action when guaranteeing the copper core use, the result of use of cable has been strengthened, service life is guaranteed, fire-retardant composite bed passes through ceramic silica gel layer, the toughness layer, fire-retardant glass fiber layer, the compound formation of insulating layer, fire-retardant thermal-insulated effect has been improved, fire-resistance has been strengthened.

Description

Flame-retardant fire-resistant halogen-free low-smoke power cable

Technical Field

The utility model relates to a power cable field, in particular to fire-retardant fire-resistant type does not have steamed low cigarette power cable.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables. Today, when fire disasters frequently occur, people begin to use flame-retardant and fire-resistant power cables in order to reduce potential safety hazards during cable use. The contents recorded in the novel halogen-free low-smoke flame-retardant fireproof power cable for rail transit disclosed in the Chinese patent No. CN203102990U can achieve rapid ceramization of a multilayer ceramic silicon rubber structure under a high-temperature condition, can avoid the spread of fire and improve the safety. But cable resistance to compression effect in this patent is general, very easily causes the fracture of copper core to the influence is used, and fire-retardant structure in this patent is ceramic silicon rubber structure, and single structure, fire-retardant effect receives the influence to a certain extent, has certain limitation during the use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides fire-retardant fire-resistant type does not have steamed low cigarette power cable, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

fire-retardant fire-resistant type does not have steamed low cigarette power cable, including protective sheath, protective sheath's inside is provided with the articulamentum, and is connected with between protective sheath and the articulamentum and is used for fire-retardant composite bed, fixed connection between protective sheath, fire-retardant composite bed and the articulamentum, the inside of articulamentum is provided with the resistance to compression layer, and is connected with support piece between resistance to compression layer and the articulamentum, the inside fixed mounting on resistance to compression layer has the support frame, and is provided with the copper core that is used for carrying electric power.

Preferably, the protective outer sleeve comprises a steel wire mesh, a first protective layer and a second protective layer, the first protective layer is fixed on the outer side of the steel wire mesh, the second protective layer is fixed on the inner side of the steel wire mesh, and the first protective layer, the second protective layer and the steel wire mesh are compounded together.

Preferably, the flame-retardant composite layer comprises a middle supporting layer, a heat-insulating layer, a flame-retardant glass fiber layer, a toughness layer and a ceramic silicon rubber layer, wherein the heat-insulating layer is fixed on the outer side of the middle supporting layer, the flame-retardant glass fiber layer is fixed on the heat-insulating layer, the toughness layer is arranged on the inner side of the middle supporting layer, and the ceramic silicon rubber layer is fixed on the inner side of the toughness layer.

Preferably, the support frame comprises a support block, reinforcing metal, a support ring and a circular hole, the reinforcing metal is fixed in the middle of the support block, the support ring is connected with the support block and fixedly connected with the support block, and the circular hole is formed in the support ring.

Preferably, the compression-resistant layer is fixedly connected with the connecting layer through the supporting piece, a first filler is arranged between the compression-resistant layer and the connecting layer, and a second filler is filled between the compression-resistant layer and the supporting frame.

Compared with the prior art, the utility model discloses following beneficial effect has: this fire-retardant fire-resistant type does not have steamed low cigarette power cable, protective sheath through setting up, compressive layer and support frame, adopt the wire net, strengthen structure cooperation such as metal and use, intensity when can guaranteeing the cable use, the resistance to compression effect has been improved, can not fracture because of exogenic action when guaranteeing the copper core use, the result of use of cable has been strengthened, service life has been guaranteed, fire-retardant composite bed passes through the ceramization silastic-layer, the toughness layer, fire-retardant glass fiber layer, the compound formation of insulating layer, fire-retardant thermal-insulated effect has been improved, fire resistance has been strengthened.

Drawings

Fig. 1 is a schematic view of the overall structure of the flame-retardant fire-resistant halogen-free low-smoke power cable of the present invention;

fig. 2 is a schematic view of the internal structure of the flame-retardant fire-resistant halogen-free low-smoke power cable;

FIG. 3 is a schematic structural view of the flame-retardant fire-resistant halogen-free low-smoke power cable protective jacket of the present invention;

FIG. 4 is a schematic structural view of the flame-retardant fire-resistant halogen-free low-smoke power cable flame-retardant composite layer of the present invention;

fig. 5 is the structure diagram of the flame-retardant fire-resistant halogen-free low-smoke power cable support frame of the present invention.

In the figure: 1. a protective outer sleeve; 101. steel wire mesh; 102. a first protective layer; 103. a second protective layer; 2. a connecting layer; 3. a flame-retardant composite layer; 301. a middle support layer; 302. a thermal insulation layer; 303. a flame retardant fiberglass layer; 304. a ductile layer; 305. a silicon rubber layer is ceramic; 4. a support member; 5. a first filler; 6. a pressure resistant layer; 7. a support frame; 701. a support block; 702. a reinforcing metal; 703. a support ring; 704. a circular hole; 8. a copper core; 9. a second filler.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, the flame-retardant fire-resistant halogen-free low-smoke power cable comprises a protective outer sleeve 1, a connecting layer 2 is arranged inside the protective outer sleeve 1, a flame-retardant composite layer 3 for flame retardance is connected between the protective outer sleeve 1 and the connecting layer 2, the protective outer sleeve 1, the flame-retardant composite layer 3 and the connecting layer 2 are fixedly connected, a pressure-resistant layer 6 is arranged inside the connecting layer 2, a supporting member 4 is connected between the pressure-resistant layer 6 and the connecting layer 2, a supporting frame 7 is fixedly arranged inside the pressure-resistant layer 6, and a copper core 8 for transmitting electric power is arranged on the supporting frame 7;

the protective outer sleeve 1 comprises a steel wire mesh 101, a first protective layer 102 and a second protective layer 103, wherein the first protective layer 102 is fixed on the outer side of the steel wire mesh 101, the second protective layer 103 is fixed on the inner side of the steel wire mesh 101, and the first protective layer 102, the second protective layer 103 and the steel wire mesh 101 are compounded together; the flame-retardant composite layer 3 comprises a middle support layer 301, a heat insulation layer 302, a flame-retardant glass fiber layer 303, a toughness layer 304 and a ceramic silicon rubber layer 305, wherein the heat insulation layer 302 is fixed on the outer side of the middle support layer 301, the flame-retardant glass fiber layer 303 is fixed on the heat insulation layer 302, the toughness layer 304 is arranged on the inner side of the middle support layer 301, and the ceramic silicon rubber layer 305 is fixed on the inner side of the toughness layer 304; the supporting frame 7 comprises a supporting block 701, a reinforcing metal 702, a supporting ring 703 and a circular hole 704, wherein the reinforcing metal 702 is fixed at the middle position of the supporting block 701, the supporting ring 703 is connected with the supporting block 701, the supporting ring 703 is fixedly connected with the supporting block 701, and the circular hole 704 is arranged on the supporting ring 703; fixed connection between anti-compression layer 6 passes through support piece 4 and articulamentum 2, and be provided with first filler 5 between anti-compression layer 6 and the articulamentum 2, it has second filler 9 to fill between anti-compression layer 6 and the support frame 7, protective sheath 1 through setting up, anti-compression layer 6 and support frame 7, adopt wire net 101, strengthen structure cooperation such as metal 702 and use, intensity when can guaranteeing the cable use, the pressure-resistant effect has been improved, can not fracture because of exogenic action when guaranteeing copper core 8 to use, the result of use of cable has been strengthened, service life has been guaranteed, fire-retardant composite bed 3 passes through ceramic silicon rubber layer 305, toughness layer 304, fire-retardant glass fiber layer 303, insulating layer 302 is compound to be formed, fire-retardant thermal-insulated effect has been improved, fire-resistance has been strengthened.

It should be noted that, the utility model relates to a fire-retardant fire-resistant type low smoke and halogen power cable, when processing, fill copper core 8 into round hole 704 on support ring 703 in support frame 7, and set up compressive layer 6 outside support frame 7, then fill second filler 9 in compressive layer 6 inboard blank position, make compressive layer 6 full, after compressive layer 6 and second filler 9 set up, set up connecting layer 2 in the periphery of compressive layer 6 through support piece 4, and fill first filler 5 between connecting layer 2 and compressive layer 6, then set up fire-retardant composite bed 3 and protective coat 1 in proper order, so that the whole cable is ready for use just in the completion of making, when using the cable, connect copper core 8 to relevant circuit, and bury the cable in soil underground, begin to carry out power transmission afterwards, when carrying power, support frame 7 guarantees the transport effect of copper core 8, meanwhile, the pressure resistant layer 6 can bear certain pressure and is matched with the middle supporting layer 301 for use, the integrity inside the cable is ensured, if a short circuit fault occurs, the copper core 8 generates a large amount of heat which acts inside the cable, when the heat contacts the flame-retardant composite layer 3, the ceramic silicon rubber layer 305, the heat insulating layer 302 and the flame-retardant glass fiber layer 303 in the flame-retardant composite layer 3 can effectively insulate heat and retard flame, the heat is prevented from being transmitted to the outside, further a fire disaster is avoided, if the local combustion of the internal structure of the cable is still caused by the short circuit, the ceramic silicon rubber layer 305 is heated and ceramic to form a non-combustible ceramic object, meanwhile, the flame-retardant glass fiber layer 303 can not combust, further transmission and expansion of fire are avoided, the safety of the cable in use is ensured, if the cable receives external force due to other reasons, wire net 101 in protective outer cover 1 can offset partial external force, avoids leading to the fracture of copper core 8 because of the exogenic action, and compressive layer 6 and toughness layer 304 also can provide certain pliability simultaneously, have further guaranteed the integrity of copper core 8, have improved life.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Fire-retardant fire-resistant type does not have steamed low cigarette power cable, its characterized in that: including protective outer cover (1), the inside of protective outer cover (1) is provided with articulamentum (2), and is connected with between protective outer cover (1) and articulamentum (2) and is used for fire-retardant composite bed (3), fixed connection between protective outer cover (1), fire-retardant composite bed (3) and articulamentum (2), the inside of articulamentum (2) is provided with resistance to compression layer (6), and is connected with support piece (4) between resistance to compression layer (6) and articulamentum (2), the inside fixed mounting of resistance to compression layer (6) has support frame (7), and is provided with copper core (8) that are used for carrying electric power on support frame (7).

2. The flame-retardant fire-resistant halogen-free low-smoke power cable according to claim 1, characterized in that: the protective outer sleeve (1) comprises a steel wire mesh (101), a first protective layer (102) and a second protective layer (103), wherein the first protective layer (102) is fixed on the outer side of the steel wire mesh (101), the second protective layer (103) is fixed on the inner side of the steel wire mesh (101), and the first protective layer (102), the second protective layer (103) and the steel wire mesh (101) are compounded together.

3. The flame-retardant fire-resistant halogen-free low-smoke power cable according to claim 1, characterized in that: the flame-retardant composite layer (3) comprises a middle support layer (301), a heat insulation layer (302), a flame-retardant glass fiber layer (303), a toughness layer (304) and a ceramic silicon rubber layer (305), wherein the heat insulation layer (302) is fixed on the outer side of the middle support layer (301), the flame-retardant glass fiber layer (303) is fixed on the heat insulation layer (302), the toughness layer (304) is arranged on the inner side of the middle support layer (301), and the ceramic silicon rubber layer (305) is fixed on the inner side of the toughness layer (304).

4. The flame-retardant fire-resistant halogen-free low-smoke power cable according to claim 1, characterized in that: the supporting frame (7) comprises a supporting block (701), reinforcing metal (702), a supporting ring (703) and a circular hole (704), wherein the reinforcing metal (702) is fixed at the middle position of the supporting block (701), the supporting ring (703) is connected with the supporting block (701), the supporting ring (703) is fixedly connected with the supporting block (701), and the circular hole (704) is arranged on the supporting ring (703).

5. The flame-retardant fire-resistant halogen-free low-smoke power cable according to claim 1, characterized in that: the pressure-resistant layer (6) is fixedly connected with the connecting layer (2) through the supporting piece (4), a first filler (5) is arranged between the pressure-resistant layer (6) and the connecting layer (2), and a second filler (9) is filled between the pressure-resistant layer (6) and the supporting frame (7).