High-temperature-resistant and high-voltage-resistant power cable

Abstract

The utility model discloses a high-temperature-resistant and high-voltage-resistant power cable, and belongs to the technical field of cables. Comprising a wire core body and further comprises a flame retardant layer and a heat dissipation assembly which are arranged in the wire core body, and a shielding layer, a heat insulation layer, an insulation layer and a protection layer are sequentially arranged on the periphery of the wire core body from inside to outside; a buffer assembly is arranged in the heat insulation layer. A first heat dissipation hole is formed in an outlet of the heat dissipation channel, and a plurality of second heat dissipation holes are formed in the surface of the heat insulation layer. Heat generated by the core body is dissipated and discharged through the heat dissipation assembly, the first heat dissipation holes and the second heat dissipation holes, the heat dissipation performance of the cable is improved, external force borne by the cable is buffered through the buffer assembly, force borne by the core body is reduced, and the service life of the core body is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a high temperature and high voltage resistant power cable. Background Art

[0002] Cable is a bridge between power supply equipment and power consumption equipment, and plays the role of transmitting electric energy. It usually consists of one or more insulated wire cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors.

[0003] The Chinese utility model patent application number 2019206614147 discloses a high temperature and high voltage resistant cable, comprising a cable core body (1), characterized in that: the outer periphery of the cable core body (1) is fixedly coated with a silicone rubber insulating inner layer (3), a silicone rubber insulating outer layer (5) is provided on the silicone rubber insulating inner layer (3), a heat insulating layer (4) is provided between the silicone rubber insulating outer layer (5) and the silicone rubber insulating inner layer (3), and the heat insulating layer (4) comprises a polyamide resin layer (40 1), two polyamide resin layers (401) are provided and are respectively bonded and fixed to the outer wall of the silicone rubber insulation inner layer (3) and the inner wall of the silicone rubber insulation outer layer (5), a support column (403) is fixedly connected between the polyamide resin layers (401), a heat dissipation copper sheet (404) is fixedly connected to the support column (403), a mica tape layer (6) is fixedly coated on the silicone rubber insulation outer layer (5), and a silicone rubber protective sleeve (7) is fixedly coated on the mica tape layer (6).

[0004] However, the above-mentioned high-temperature and high-voltage resistant cables still have a large amount of heat that cannot be dissipated, and the cable heat dissipation effect is poor, which causes the cable to heat up. Under such long-term overload operation conditions, the cables are prone to aging and cracking, and power cable failures are very likely to occur, posing certain safety hazards. In addition, the existing high-temperature and high-voltage resistant cables are not easy to bend or are bent excessively by external force, resulting in damage to the cable core. Utility Model Content

[0005] Technical problem solved by the utility model: In order to solve the above problems, the utility model proposes a high temperature and high voltage resistant power cable, which improves the heat dissipation effect of the cable and can buffer the wire core when the cable is subjected to external force.

[0006] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0007] A high temperature and high voltage resistant power cable comprises a core body, a flame retardant layer and a heat dissipation component arranged in the core body, a shielding layer, a heat insulation layer, an insulating layer and a protective layer are arranged in sequence from the inside to the outside on the periphery of the core body; a buffer component is arranged in the heat insulation layer.

[0008] Preferably, the heat dissipation assembly comprises a core body, a heat dissipation channel and a heat sink; the heat dissipation channel is Y-shaped and is arranged in the middle of the core body, and the heat sink is arranged in the heat dissipation channel.

[0009] Preferably, there are multiple cores, which are separated by heat dissipation channels.

[0010] Preferably, a plurality of first heat dissipation holes are provided at the outlet of the heat dissipation channel.

[0011] Preferably, the flame retardant layer is arranged on the outer surface of the core.

[0012] Preferably, the buffer component comprises an elastic ball, an elastic component and a fixed block; the fixed block is arranged on the shielding layer, the other end of the fixed block is fixedly connected with the elastic component, and the elastic ball is arranged on the elastic component.

[0013] Preferably, a plurality of evenly distributed second heat dissipation holes are provided on the surface of the heat insulation layer.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0015] (1) The utility model provides a flame retardant layer on the surface of the core body and fills the flame retardant material in the flame retardant layer, thereby protecting the core body from flame retardancy and high temperature resistance, and effectively preventing fire.

[0016] (2) The utility model provides a heat dissipation component in the cable core body, and a second heat dissipation hole is provided on the surface of the heat insulation layer. The heat dissipation component includes a core body, a heat dissipation channel and a heat sink. The heat generated by the core body when working is absorbed by the heat sink. The first heat dissipation hole is provided at the outlet of the heat dissipation channel. The first heat dissipation hole and the second heat dissipation hole discharge the heat generated by the core body, thereby improving the heat dissipation effect of the cable and enhancing the high temperature resistance of the cable.

[0017] (3) The utility model sets a buffer component in the insulation layer, and the buffer component includes an elastic ball, an elastic component and a fixed block; when the cable is squeezed or impacted by an external force, the elastic ball also applies force to the elastic component along with the external force. The elastic component is elastic and buffers the external force, thereby reducing the force on the core body and avoiding damage to the core body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the wire core body of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the heat insulation layer of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the first heat dissipation hole of the utility model. DETAILED DESCRIPTION

[0022] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1-4 As shown, the utility model proposes a high temperature and high voltage resistant power cable, comprising a core body 1, a flame retardant layer 2, a shielding layer 3, a heat insulation layer 4, an insulating layer 5 and a protective layer 6; the flame retardant layer 2 is fixedly provided inside the core body 1, and the shielding layer 3, the heat insulation layer 4, the insulating layer 5 and the protective layer 6 are sequentially provided on the periphery of the flame retardant layer 2.

[0024] like Figure 2 , 4 As shown, a heat dissipation component is provided inside the wire core body 1, and the heat dissipation component includes a core body 1.1, a heat dissipation channel 1.2 and a heat sink 1.3; in the present embodiment, three core bodies 1.1 are provided inside the wire core body 1, and the heat dissipation channel 1.2 is Y-shaped and is arranged in the middle of the wire core body 1 to separate the core bodies 1.1, and a plurality of first heat dissipation holes 1.2.1 are arranged at the outlet of the heat dissipation channel 1.2, and the heat sink 1.3 is arranged in the heat dissipation channel 1.2. In the present embodiment, there are three outlets of the heat dissipation channel 1.2, and the core bodies 1.1 are independent of each other, and a flame retardant layer 2 is provided on the outer surface of the core body 1.1, and flame retardant material is filled in the flame retardant layer 2 to protect the core body 1.1 from flame retardancy and high temperature resistance.

[0025] Currently available flame retardant fillers include mineral fillers, polystyrene foam, silicone fillers, etc. These filling materials have good flame retardant properties and can effectively prevent the occurrence of fire.

[0026] The materials of the heat sink include low-carbon steel, aluminum, steel-aluminum composite radiator and pure copper. In this embodiment, pure copper is selected.

[0027] like Figure 3As shown, a buffer component is provided in the insulation layer 4, and the buffer component includes an elastic ball 4.1, an elastic component 4.2 and a fixed block 4.3; the fixed block 4.3 is fixedly connected to the shielding layer 2, and the other end of the fixed block 4.3 is provided with an elastic component 4.2, and the elastic ball 4.1 is arranged on the elastic component 4.2; when the cable is squeezed or impacted by an external force, the elastic ball 4.1 also applies force to the elastic component 4.2 along with the external force, and the elastic component 4.2 is elastic and buffers the external force, thereby reducing the force on the core body 1 and avoiding damage to the core body 1.1.

[0028] A plurality of second heat dissipation holes are evenly arranged on the surface of the heat insulation layer 4. When the cable is working, the heat generated by the core body 1 is absorbed by the heat sink 1.3, and the absorbed heat is discharged through the first heat dissipation hole 1.2.1 and the second heat dissipation hole, thereby improving the heat dissipation effect of the cable and enhancing the high temperature resistance of the cable.

[0029] The working principle or use process of the utility model: during the use of the cable, a flame retardant layer 2 is arranged on the periphery of the core body 1.1, and flame retardant materials are filled to effectively protect the core body 1.1 from flame retardancy and high temperature resistance. A shielding layer 3 is arranged on the periphery of the core body 1. The shielding layer 3 ensures the anti-interference ability of the cable. A heat insulation layer 4 is arranged on the periphery of the shielding layer 3. The heat insulation layer and the buffer component inside 4 can effectively reduce and buffer the external force applied to the cable during transportation or laying, thereby reducing the probability of cable damage. When the cable is squeezed or impacted by external force, an insulating layer 5 and a protective layer 6 are arranged in sequence on the periphery of the heat insulation layer 4, thereby enhancing the safety of the cable and reducing the influence of the harsh external environment on the cable. A heat dissipation component is also arranged in the core body 1, and the heat generated by the core body 1.1 is discharged through the heat sink, the first heat dissipation hole 1.2.1 and the second heat dissipation hole.

[0030] When the cable is squeezed or hit by external force, the elastic ball 4.1 also applies force to the elastic component 4.2 along with the external force. The elastic component 4.2 is elastic and buffers the external force, reducing the force on the core body 1, avoiding damage to the core body 1.1 and extending the service life of the core body 1.1.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high temperature and high voltage resistant power cable, comprising a core body (1), characterized in that: It also comprises a flame retardant layer (2) and a heat dissipation component arranged in the wire core body (1); a shielding layer (3), a heat insulation layer (4), an insulating layer (5) and a protective layer (6) are arranged in sequence from the inside to the outside on the periphery of the wire core body (1); and a buffer component is arranged in the heat insulation layer (4).

2. A high temperature and high voltage resistant power cable according to claim 1, characterized in that: The heat dissipation component comprises a core body (1.1), a heat dissipation channel (1.2) and a heat dissipation fin (1.3); the heat dissipation channel (1.2) is Y-shaped and is arranged in the middle of the wire core body (1); and the heat dissipation fin (1.3) is arranged in the heat dissipation channel (1.2).

3. A high temperature and high voltage resistant power cable according to claim 2, characterized in that: The core bodies (1.1) are multiple in number, and the core bodies (1.1) are separated by heat dissipation channels (1.2).

4. A high temperature and high voltage resistant power cable according to claim 2, characterized in that: A plurality of first heat dissipation holes (1.2.1) are provided at the outlet of the heat dissipation channel (1.2).

5. The high temperature and high voltage resistant power cable according to claim 1, characterized in that: The flame retardant layer (2) is arranged on the outer surface of the core (1.1).

6. A high temperature and high voltage resistant power cable according to claim 1, characterized in that: The buffer component comprises an elastic ball (4.1), an elastic component (4.2) and a fixed block (4.3); the fixed block (4.3) is arranged on the shielding layer (3), the other end of the fixed block (4.3) is fixedly connected to the elastic component (4.2), and the elastic ball (4.1) is arranged on the elastic component (4.2).

7. The high temperature and high voltage resistant power cable according to claim 1, characterized in that: A plurality of evenly distributed second heat dissipation holes are provided on the surface of the heat insulation layer (4).

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