Heat dissipation type overhead insulated wire

Abstract

The invention discloses a heat dissipation type overhead insulated wire, and relates to the technical field of wires, the heat dissipation type overhead insulated wire comprises a first insulating layer, a wrapping tape is arranged in the first insulating layer, a plurality of shielding layers are arranged in the wrapping tape, a second insulating layer is arranged in the shielding layers, and a conductor for electric conduction is arranged in the second insulating layer. The cable comprises a wrapping tape, a shielding layer is arranged on the wrapping tape, filler is arranged between the shielding layer and the wrapping tape, the cable further comprises a first heat conductor and a second heat conductor, the second heat conductor is arranged on the filler, one end of the first heat conductor is located in the filler and makes contact with the second heat conductor, and the other end of the first heat conductor makes contact with outside air. The LED lamp has the advantage of being good in heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of conductors, and in particular to a heat dissipation type overhead insulated conductor. Background Art

[0002] Overhead insulated cable is also called overhead insulated conductor. It is an overhead conductor with an insulating layer. The insulating layer is generally made of plastic or other insulating materials, such as cross-linked polyethylene (XLPE). Its insulating layer is wrapped around the conductor, isolating the conductor from the external environment (such as air, trees, buildings, etc.), reducing the probability of phase-to-phase short circuit and ground fault in the line.

[0003] However, the insulation layer also increases the external thermal resistance of the conductor and reduces the heat dissipation of the conductor, resulting in the allowable current carrying capacity of the overhead insulated conductor being lower than that of the overhead bare conductor with the same conductor cross-sectional size. During peak load periods, the current carrying capacity is prone to be insufficient, causing a bottleneck in power transmission.

[0004] Therefore, it is necessary to develop a heat dissipation type overhead insulated conductor to address the above defects. Summary of the invention

[0005] The purpose of the present invention is to provide a heat dissipation type overhead insulated conductor, which has the advantage of good heat dissipation effect.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a heat dissipation overhead insulated conductor, comprising a first insulating layer, a wrapping tape is arranged in the first insulating layer, a plurality of shielding layers are arranged in the wrapping tape, a second insulating layer is arranged in the shielding layer, a conductor for conducting electricity is arranged in the second insulating layer, a filler is arranged between the shielding layer and the wrapping tape, and further comprising a first heat conductor and a second heat conductor, the second heat conductor is arranged on the filler, one end of the first heat conductor is located in the filler and in contact with the second heat conductor, and the other end of the first heat conductor is in contact with the outside air.

[0008] Optionally, the second heat conductor is heat-conductive powder, and the heat-conductive powder is disposed on the filler.

[0009] Optionally, the thermally conductive powder is one or a combination of aluminum nitride, boron nitride, aluminum oxide, magnesium oxide and magnesium hydroxide.

[0010] Optionally, the first heat conductor is a rod or plate structure.

[0011] Optionally, the first heat conductor is made of copper, aluminum, stainless steel or graphene.

[0012] Optionally, a groove for increasing the heat dissipation area is formed on the end surface of the first heat conductor away from the filler.

[0013] Optionally, waterproof glue is provided between the first heat conductor and the first insulating layer.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] During the power transmission process, the conductor generates heat, which is first transferred to the second insulating layer and then to the shielding layer. The second heat conductor and filler absorb the heat on the shielding layer and transfer it to the first heat conductor. The first heat conductor dissipates the heat into the air, thereby improving the heat dissipation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0019] Explanation of the reference numerals: 1. first insulating layer; 2. wrapping tape; 3. shielding layer; 4. second insulating layer; 5. conductor; 6. filler; 7. first heat conductor; 701. groove; 8. second heat conductor; 9. waterproof glue. DETAILED DESCRIPTION

[0020] The core of the present invention is to provide a heat dissipation type overhead insulated conductor, which has the advantage of good heat dissipation effect.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In a specific embodiment of the present invention, it includes a first insulating layer 1, a wrapping tape 2 is arranged in the first insulating layer 1, a plurality of shielding layers 3 are arranged in the wrapping tape 2, a second insulating layer 4 is arranged in the shielding layer 3, a conductor 5 for conducting electricity is arranged in the second insulating layer 4, a filler 6 is arranged between the shielding layer 3 and the wrapping tape 2, and also includes a first heat conductor 7 and a second heat conductor 8, the second heat conductor 8 is arranged on the filler 6, one end of the first heat conductor 7 is located in the filler 6 and in contact with the second heat conductor 8, and the other end of the first heat conductor 7 is in contact with the outside air.

[0024] The first insulating layer 1 and the second insulating layer 4 can both be cross-linked polyethylene to play an insulating role.

[0025] The shielding layer 3 can be in the form of metal foil or woven metal mesh to play an electromagnetic shielding role.

[0026] The filler 6 can be a plurality of glass fibers or hemp ropes, etc., wherein the glass fiber, with its high mechanical strength, provides a solid support for the internal structure of the conductor, ensuring that each component maintains a relatively stable position relationship when subjected to external force compression and stretching, and meets the requirements of the power cable for the mechanical properties of the filler. At the same time, as an excellent electrical insulator, the glass fiber does not affect the electrical properties of the conductor at all, ensuring the safety of power transmission.

[0027] The wrapping tape 2 can be made of polyester film to protect the internal structure and fix the filler 6.

[0028] In a specific embodiment of the present invention, the second heat conductor 8 is a heat conductive powder, and the heat conductive powder is arranged on the filler 6. During manufacturing, the heat conductive powder is evenly "sprinkled" on the surface of multiple fillers 6, such as electrostatic spraying, plasma spraying, manual throwing or allowing the filler 6 to pass through the heat conductive powder, and then the first heat conductor 7 is inserted into the filler 6, followed by winding the wrapping tape 2, the wrapping tape 2 tightly wraps the filler 6 and the first heat conductor 7, and they are fixed by the mechanical pressure of wrapping to ensure the stability of the structure in subsequent processes and use, and the waterproof glue 9 is applied on the first heat conductor 7, and finally the first insulating layer 1 is extruded.

[0029] In a specific embodiment of the present invention, the thermally conductive powder is one or a combination of aluminum nitride, boron nitride, aluminum oxide, magnesium oxide and magnesium hydroxide. The thermally conductive powder has excellent thermal conductivity. For example, the thermal conductivity of aluminum nitride is as high as 80W / (m·K)-320W / (m·K).

[0030] In a specific embodiment of the present invention, the first heat conductor 7 is a rod or plate structure.

[0031] In a specific embodiment of the present invention, the first heat conductor 7 is made of copper, aluminum, stainless steel or graphene.

[0032] In a specific embodiment of the present invention, a groove 701 for increasing the heat dissipation area is formed on the end surface of the first heat conductor 7 away from the filler 6 to improve the heat dissipation efficiency.

[0033] In a specific embodiment of the present invention, a waterproof glue 9 is provided between the first heat conductor 7 and the first insulating layer 1, such as silicone waterproof glue, polyurethane waterproof glue or acrylate waterproof glue.

[0034] The working principle of a heat dissipation type overhead insulated conductor of the present invention is as follows: during the power transmission process, the conductor 5 generates heat, the heat is first transferred to the second insulating layer 4, and then transferred to the shielding layer 3, the second heat conductor 8 and the filler 6 absorb the heat on the shielding layer 3 and transfer it to the first heat conductor 7, and the first heat conductor 7 dissipates the heat into the air.

[0035] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0036] The above embodiments are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A heat dissipation overhead insulated conductor, comprising a first insulating layer (1), a wrapping tape (2) being arranged in the first insulating layer (1), a plurality of shielding layers (3) being arranged in the wrapping tape (2), a second insulating layer (4) being arranged in the shielding layer (3), a conductor (5) for conducting electricity being arranged in the second insulating layer (4), a filler (6) being arranged between the shielding layer (3) and the wrapping tape (2), characterized in that: It also comprises a first heat conductor (7) and a second heat conductor (8), wherein the second heat conductor (8) is arranged on the filler (6), one end of the first heat conductor (7) is located in the filler (6) and in contact with the second heat conductor (8), and the other end of the first heat conductor (7) is in contact with the outside air.

2. The heat dissipation type overhead insulated conductor according to claim 1, characterized in that: The second heat conductor (8) is heat-conducting powder, and the heat-conducting powder is arranged on the filler (6).

3. The heat dissipation type overhead insulated conductor according to claim 2, characterized in that: The thermally conductive powder is one of aluminum nitride, boron nitride, aluminum oxide, magnesium oxide and magnesium hydroxide, or a combination thereof.

4. The heat dissipation overhead insulated conductor according to claim 1, characterized in that: The first heat conductor (7) is a rod or plate structure.

5. The heat dissipation overhead insulated conductor according to claim 1 or 4, characterized in that: The first heat conductor (7) is made of one of copper, aluminum, stainless steel or graphene.

6. The heat dissipation type overhead insulated conductor according to claim 5, characterized in that: A groove (701) for increasing the heat dissipation area is provided on the end surface of the first heat conductor (7) away from the filler (6).

7. The heat dissipation overhead insulated conductor according to claim 1, characterized in that: A waterproof glue (9) is provided between the first heat conductor (7) and the first insulating layer (1).

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