CN212541935U

CN212541935U - High-voltage power cable

Info

Publication number: CN212541935U
Application number: CN202021554787.3U
Authority: CN
Inventors: 王祖岚; 王祖宏
Original assignee: Anhui Tianhong Cable Co ltd
Current assignee: Anhui Tianhong Cable Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-12
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a high voltage power cable belongs to cable technical field. A high-voltage power cable comprises an outer sheath, wherein a waterproof layer is arranged on the inner wall of the outer sheath, a flame-retardant layer is arranged on the inner wall of the waterproof layer, an insulating layer is arranged on the inner wall of the flame-retardant layer, a plurality of groups of metal wires are arranged in the insulating layer, a cable core assembly is arranged on the inner wall of the insulating layer, the cable core assembly comprises a metal net layer, graphite particles are filled in the metal net layer, a cable core protective layer is arranged in the metal net layer, a cable core is arranged in the cable core protective layer, a heat absorption layer is arranged at the center of the inner part; the utility model discloses effectively solved the cable and probably produced the problem of electric leakage under transmission high voltage electric power, improved the security of cable when transmission high voltage electric power in the use greatly, avoided because the electric leakage and the personnel that cause or the loss of property's the condition, improved the life of cable.

Description

High-voltage power cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a high voltage power cable.

Background

The cable is made of one or more mutually insulated conductors and an outer-coated insulating protective layer, is a wire for transmitting electric power or information from one place to another place, is common data signal transmission equipment, and has the advantages of large communication capacity, high transmission stability and good confidentiality. The application is also more and more extensive, by simple city erection, has expanded mountain area, seabed, adverse circumstances district etc. unmanned area etc. and the prior art designs the high-voltage transmission of cable mostly, and has ignored the cable and can produce high temperature to outside under high-voltage transmission to lead to causing the inside damage of cable and then producing the condition emergence of electric leakage because of outside high temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the cable may produce the electric leakage under the transmission high voltage electricity among the prior art, and the high voltage electricity cable who provides.

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

the high-voltage power cable comprises an outer sheath, wherein a waterproof layer is arranged on the inner wall of the outer sheath, a flame-retardant layer is arranged on the inner wall of the waterproof layer, an insulating layer is arranged on the inner wall of the flame-retardant layer, a plurality of groups of metal wires are arranged in the insulating layer, and a cable core assembly is arranged on the inner wall of the insulating layer.

Preferably, the cable core assembly comprises a metal mesh layer, graphite particles are filled in the metal mesh layer, a cable core protective layer is arranged in the metal mesh layer, a cable core is arranged in the cable core protective layer, a heat absorption layer is arranged at the center of the inside of the metal mesh layer, and a liquid nitrogen pipe is arranged in the heat absorption layer.

Preferably, the outer sheath is made of neoprene.

Preferably, the waterproof layer is made of a water-soluble swelling material.

Preferably, the flame retardant layer is made of low smoke zero halogen polyethylene.

Preferably, the insulating layer is made of inter-crosslinked polyethylene.

Preferably, the metallic mesh layer is made of a compacted tin-plated copper conductor.

Preferably, the cable core is formed by winding a plurality of strands of copper wires.

Compared with the prior art, the utility model provides a high voltage power cable possesses following beneficial effect:

1. this high voltage power cable through a plurality of groups of metal wire of insulating layer cooperation, blocks and the water conservancy diversion to the inside electric power that spills of cable, has effectively prevented the emergence of incident simultaneously to outer destruction after inside electric power reveals.

2. This high voltage power cable through graphite particle and heat-sink shell, carries out the effective absorption to the inside heat that produces because of high-pressure transmission of cable, thereby prevents inside to take place because of the condition that high-pressure transmission leads to the high temperature to destroy to inside production.

3. This high voltage power cable, through the oversheath cooperation metal mesh layer of being made by chloroprene rubber, effectively increased the pliability of cable, prevented that the cable from producing destruction to inner structure because of external force is dragged, prolonged the life of cable.

4. This high voltage power cable through the fire-retardant layer of being made by low smoke and zero halogen polyethylene, effectively prevents the afferent of outside heat, is favorable to stabilizing the inside temperature of cable, improves the life of cable, prevents to lead to the emergence of the condition that cable work is not good or do not carry out work because of high temperature, reduces the manpower and materials cost of later maintenance and change simultaneously.

5. This high voltage power cable through the waterproof layer of being made by water-soluble expanding material, thereby prevents that the cable from causing the certain fracture of outside under the condition of long-time high temperature solarization to destroy the condition of cable inner structure in rainwater weather infiltration, the life of extension cable.

The part which is not involved in the device is the same as the prior art or can be realized by the prior art, the utility model effectively solves the problem that the cable can generate electric leakage when transmitting high-voltage power, greatly improves the safety of the cable when transmitting high-voltage power in the using process, avoids the condition of personnel or property loss caused by electric leakage, prolongs the service life of the cable, firstly, the outer sheath plays a role in protecting the inside of the cable, the waterproof layer prevents the water infiltration after the outer sheath is cracked, the flame-retardant layer prevents the introduction of external heat and is beneficial to stabilizing the temperature inside the cable, the insulating layer is matched with a plurality of groups of metal wires to block and guide the electric power leaked inside the cable, the damage to the outer layer after the internal electric power is leaked is effectively prevented, the graphite particles inside the cable core component and the liquid nitrogen pipe effectively absorb the heat generated by high-voltage transmission inside the cable, the situation that the inside is damaged due to overhigh temperature caused by high-voltage transmission is prevented.

Drawings

Fig. 1 is a schematic structural view of a high voltage power cable according to the present invention;

fig. 2 is a schematic structural diagram of the cable core assembly of the present invention.

In the figure:

1. an outer sheath; 2. a waterproof layer; 3. a flame retardant layer; 4. an insulating layer; 5. a metal wire; 6. a cable core assembly; 61. a metal mesh layer; 62. graphite particles; 63. a cable core protective layer; 64. a cable core; 65. a heat absorbing layer; 66. a liquid nitrogen pipe.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a high-voltage power cable, including the oversheath 1, the oversheath 1 is made of neoprene, has effectively increased the pliability of the cable, prevent the cable from pulling and producing the destruction to the inner structure because of the external force, has lengthened the service life of the cable, the inner wall of the oversheath 1 has waterproof layers 2, the waterproof layers 2 are made of water-soluble expanded material, prevent the cable from causing the external certain condition to split under the condition of long-time high temperature solarization, thus damage the inner structure of the cable in the rainwater weather, and the inner wall of the waterproof layer 2 has fire-retardant layer 3, the fire-retardant layer 3 is made of low smoke halogen-free polyethylene, prevent the transmission of the external heat effectively, help to stabilize the temperature inside the cable, the inner wall of the fire-retardant layer 3 has insulating layer 4, the insulating layer 4 is made of inner cross-linked polyethylene, and there are several, block and the water conservancy diversion to the inside electric power that spills of cable, effectively prevented inside electric power and revealed the back to outer destruction, avoided the emergence of incident simultaneously, 4 inner walls of insulating layer are equipped with cable core subassembly 6, and cable core subassembly 6 includes metal mesh layer 61: metal mesh layer 61 is made by sticising the tin-plated copper conductor, the inside packing of metal mesh layer 61 has graphite granule 62, the inside cable core protective layer 63 that is equipped with of metal mesh layer 61, and the inside cable core 64 that is equipped with of cable core protective layer 63, cable core 64 has the winding of stranded copper wire to constitute, the inside center department of metal mesh layer 61 is equipped with heat-sink shell 65, and the inside liquid nitrogen pipe 66 that is equipped with of heat-sink shell 65, through graphite granule 62, heat-sink shell 65 and liquid nitrogen pipe 66, effectively absorb the inside heat that produces because of high-pressure transmission of cable, thereby prevent inside because of high-pressure transmission leads to the high temperature to take place the condition of.

The utility model discloses a theory of operation: at first oversheath 1 plays the guard action to the cable inside, waterproof layer 2 prevents the moisture infiltration after oversheath 1 ftractures, fire-retardant layer 3 prevents the afferent of outside heat, be favorable to stabilizing the inside temperature of cable, insulating layer 4 cooperates the inside electric power that spills of a plurality of groups of metal wire 5 to the cable to block and the water conservancy diversion, the destruction to outer after effectively having prevented inside electric power to reveal, the graphite granule 62 and the liquid nitrogen pipe 66 of cable core subassembly 6 inside effectively absorb the heat that the cable inside produced because of high-pressure transmission, thereby it takes place to prevent inside the condition that produces the destruction because of high-pressure transmission leads to the high temperature.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high-voltage power cable comprising an outer sheath (1), characterized in that: the inner wall of the outer sheath (1) is provided with a waterproof layer (2), the inner wall of the waterproof layer (2) is provided with a flame-retardant layer (3), the inner wall of the flame-retardant layer (3) is provided with an insulating layer (4), a plurality of groups of metal wires (5) are arranged inside the insulating layer (4), and the inner wall of the insulating layer (4) is provided with a cable core assembly (6).

2. A high voltage power cable according to claim 1, characterized in that: the cable core assembly (6) comprises a metal mesh layer (61), graphite particles (62) are filled in the metal mesh layer (61), a cable core protective layer (63) is arranged in the metal mesh layer (61), a cable core (64) is arranged in the cable core protective layer (63), a heat absorption layer (65) is arranged at the center of the interior of the metal mesh layer (61), and a liquid nitrogen pipe (66) is arranged in the heat absorption layer (65).

3. A high voltage power cable according to claim 1, characterized in that: the outer sheath (1) is made of neoprene.

4. A high voltage power cable according to claim 1, characterized in that: the waterproof layer (2) is made of water-soluble expansion materials.

5. A high voltage power cable according to claim 1, characterized in that: the flame-retardant layer (3) is made of low-smoke halogen-free polyethylene.

6. A high voltage power cable according to claim 1, characterized in that: the insulating layer (4) is made of internally crosslinked polyethylene.

7. A high voltage power cable according to claim 2, characterized in that: the metallic mesh layer (61) is made of a compacted tin-plated copper conductor.

8. A high voltage power cable according to claim 2, characterized in that: the cable core (64) is formed by winding a plurality of strands of copper wires.