High-voltage cable painted conductor structure

Abstract

The utility model discloses a painted conductor structure of a high-voltage cable, which relates to the technical field of cable conductors and comprises a first conductor and a second conductor, insulation assemblies are arranged outside the first conductor and the second conductor, and a heat dissipation assembly used for accelerating heat dissipation of the cable is arranged on the circumferential outer wall of the second conductor. The insulation assembly is arranged outside the heat dissipation assembly, the number of the first conductors is six, and the six first conductors are twisted on the circumferential outer wall of the second conductor. According to the utility model, because the single cylindrical second conductor is located at the center and cooperates with the stranded first conductor, the electric field distribution in the cable is improved, the electric field is more uniform, the electric field intensity borne by the insulating layer is significantly reduced, the phenomena of partial discharge and insulation breakdown are reduced, the insulating performance of the cable is powerfully improved, and the service life of the cable is prolonged. And the service life of the cable is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cable conductor technology, and in particular to a high-voltage cable coated conductor structure. Background Technology

[0002] In the field of high-voltage cable conductor technology, traditional cable conductor structures have revealed a series of problems in practical applications. On the one hand, existing cable conductors lack flexibility, making them extremely difficult to lay in complex environments, such as when needing to bypass numerous obstacles inside buildings, pass through narrow pipes, or be laid in complex terrain. Excessive bending can easily damage the conductor, affecting the cable's normal service life. On the other hand, their mechanical strength is limited. During cable laying and use, if subjected to significant tensile force or external impact, the conductor is prone to breakage, leading to power outages. Simultaneously, traditional conductor structures have defects in electric field distribution. The uneven electric field distribution results in excessively high electric field strength on the insulation layer, leading to frequent partial discharge and insulation breakdown, seriously threatening the cable's insulation performance and operational stability.

[0003] Furthermore, with the continuous growth of electricity demand, the requirements for the current-carrying capacity of cables are increasing. The structural design of traditional cable conductors is insufficient to meet the needs of high-capacity power transmission, resulting in high resistance, significant power loss, and low transmission efficiency during transmission. Moreover, cables generate a large amount of heat during operation, and traditional conductor structures have poor heat dissipation. Heat accumulation not only accelerates conductor aging but also further reduces the cable's current-carrying capacity and may even pose safety hazards. Therefore, there is an urgent need for a high-voltage cable coated conductor structure to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-voltage cable coated conductor structure. Its advantages include: a more uniform electric field, which significantly reduces the electric field strength borne by the insulation layer, decreasing partial discharge and insulation breakdown, thus greatly improving the cable's insulation performance and extending its service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-voltage cable coated conductor structure includes a first conductor and a second conductor, wherein the first conductor and the second conductor are provided with an insulating component on their exterior.

[0007] The outer circumferential wall of the second conductor is provided with a heat dissipation component for accelerating heat dissipation of the cable;

[0008] The insulating component is disposed outside the heat dissipation component.

[0009] The above technical solutions provide basic electrical conductivity and insulation for the cable. The first conductor is stranded on the outer wall of the second conductor, which enhances the cable's flexibility and mechanical strength, facilitates laying in complex environments, and improves reliability.

[0010] The present invention is further configured such that the number of the first conductors is six groups, and the six groups of the first conductors are twisted together on the outer circumferential wall of the second conductor.

[0011] The above technical solutions effectively enhance the cable's flexibility through multi-strand stranded structure, enabling it to better adapt to complex laying environments while improving mechanical strength.

[0012] The present invention is further configured such that the insulating component includes an insulating varnish layer coated on the outer wall of the first conductor, and an insulating sheath is wrapped around the circumferential outer wall of the first conductor.

[0013] Through the above technical solutions: the insulating varnish layer is coated on the outer wall of the first conductor, which can directly insulate and protect the first conductor, reducing the risk of current leakage; the insulating sheath is wrapped around the outer wall of the first conductor circumference, further enhancing the insulation effect; the double insulation design effectively improves the insulation performance of the cable and ensures the safety of the cable during operation.

[0014] The present invention is further configured such that the insulating sheath forms a first gap with the first conductor, and the first gap is filled with an insulating filler.

[0015] The above technical solutions can enhance insulation performance and further isolate current, while also acting as a buffer to reduce damage to the first conductor and insulation sheath from external impacts, thereby improving the stability and service life of the cable.

[0016] The present invention is further configured such that the heat dissipation component includes a first arc-shaped groove, a second arc-shaped groove and a third arc-shaped groove formed on the outer wall of the second conductor, wherein the interior of the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove are all filled with a second heat dissipation medium.

[0017] The above technical solutions increase the heat dissipation area, enabling rapid absorption and conduction of heat generated during cable operation, effectively improving heat dissipation efficiency and preventing heat accumulation from affecting cable performance.

[0018] The present invention is further configured such that the inner diameters of the first arc-shaped groove, the second arc-shaped groove, and the third arc-shaped groove increase sequentially.

[0019] The above technical solutions have created a multi-layered heat dissipation structure, which can dissipate heat more rationally according to the heat distribution, making the heat dissipation effect more uniform and efficient, and further improving the heat dissipation performance of the cable.

[0020] The present invention is further configured such that the outer circumferential wall of the first conductor and the outer circumferential wall of the second conductor are surrounded by a first heat dissipation medium, wherein both the first heat dissipation medium and the second heat dissipation medium are silicone oil.

[0021] Through the above technical solutions, silicone oil has good thermal conductivity and stability, can quickly transfer heat, effectively reduce the internal temperature of the cable, and improve the current carrying capacity and operational safety of the cable.

[0022] The present invention is further configured such that an annular groove is formed on the outer circumference of the second conductor, the annular groove being evenly distributed on the outer circumference of the second conductor, and the annular groove being connected to the heat dissipation assembly.

[0023] The above technical solution enables the second heat dissipation medium to circulate between the annular groove and the arc-shaped groove, further enhancing the heat dissipation effect, accelerating heat dissipation, and ensuring the temperature stability of the cable during long-term operation.

[0024] The beneficial effects of this utility model are as follows:

[0025] A high-voltage cable coated conductor structure, by using a first conductor made of multiple stranded wires, gives the cable good flexibility, making it easy to lay in complex environments and effectively cope with deformation caused by equipment movement. At the same time, the multi-strand structure enhances mechanical strength, and even if individual wires are damaged, the whole cable can still conduct electricity normally, improving the reliability of the cable during laying and use and reducing the risk of conductor damage caused by external forces.

[0026] A high-voltage cable coated conductor structure, with a single cylindrical second conductor located at the center, works synergistically with the stranded first conductor to improve the electric field distribution inside the cable, making the electric field more uniform. This significantly reduces the electric field strength borne by the insulation layer, reduces the occurrence of partial discharge and insulation breakdown, effectively improves the insulation performance of the cable, and extends the service life of the cable.

[0027] A high-voltage cable coated conductor structure, due to the combination of the first conductor and the second conductor, increases the effective cross-sectional area of ​​the conductor, thereby improving the current carrying capacity of the cable. When transmitting the same current, it can reduce the conductor resistance, reduce the loss of electrical energy during transmission, improve the power transmission efficiency, and meet the growing demand for high-capacity power transmission.

[0028] A high-voltage cable coated conductor structure includes a heat dissipation component on the outer circumference of a second conductor. This component comprises a first arc-shaped groove, a second arc-shaped groove, and a third arc-shaped groove with different inner diameters, filled with a second heat dissipation medium. Combined with the first heat dissipation medium (both silicone oil) between the first and second conductors, this structure can quickly dissipate the heat generated during cable operation. This not only improves the current carrying capacity of the cable but also avoids safety hazards caused by heat accumulation, ensuring the safe and stable operation of the cable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall end face cross-sectional structure of a high-voltage cable coated conductor structure proposed in this utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of a high-voltage cable coated conductor structure proposed in this utility model;

[0031] Figure 3 This utility model proposes a high-voltage cable coated conductor structure. Figure 2 Enlarged structural diagram at point A;

[0032] Figure 4 This is a schematic diagram showing the internal structure of a high-voltage cable coated conductor structure proposed in this utility model.

[0033] Figure 5 This utility model proposes a high-voltage cable coated conductor structure. Figure 4 Enlarged structural diagram at point B.

[0034] In the figure: 1. First conductor; 2. Insulating filler; 3. Insulating varnish layer; 4. Insulating sheath; 5. Second conductor; 6. Heat dissipation component; 6001. First arc groove; 6002. Second arc groove; 6003. Third arc groove; 7. First heat dissipation medium; 8. Second heat dissipation medium; 9. Annular groove. Detailed Implementation

[0035] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0036] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0037] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0038] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0039] Reference Figures 1-5 A high-voltage cable coated conductor structure includes a first conductor 1 and a second conductor 5, with insulating components disposed on the outside of the first conductor 1 and the second conductor 5;

[0040] The outer circumferential wall of the second conductor 5 is provided with a heat dissipation component 6 for accelerating heat dissipation of the cable;

[0041] An insulation component is disposed outside the heat dissipation component 6. A first conductor 1 and a second conductor 5 are disposed thereon, and an insulation component is disposed outside them to provide basic conductivity and insulation functions for the cable. The first conductor 1 is twisted into the outer circumference of the second conductor 5 to enhance the cable's flexibility and mechanical strength, making it easier to lay in complex environments and improving reliability.

[0042] Specifically, there are six sets of first conductors 1. The six sets of first conductors 1 are twisted on the outer circumference of the second conductor 5. The multi-strand twisted structure effectively enhances the flexibility of the cable, enabling it to better adapt to complex laying environments. At the same time, it improves mechanical strength. Even if some of the first conductors 1 are damaged, the overall conductivity can still be maintained, ensuring the normal operation of the cable.

[0043] Specifically, the insulation components include an insulating varnish layer 3 coated on the outer wall of the first conductor 1, and an insulating sheath 4 wrapped around the circumferential outer wall of the first conductor 1. The insulating varnish layer 3 coated on the outer wall of the first conductor 1 can directly provide insulation protection for the first conductor 1 and reduce the risk of current leakage. The insulating sheath 4 wrapped around the circumferential outer wall of the first conductor 1 further enhances the insulation effect. The double insulation design effectively improves the insulation performance of the cable and ensures the safety of the cable during operation.

[0044] Specifically, the insulating sheath 4 and the first conductor 1 form a first gap, and the first gap is filled with insulating filler 2. The insulating filler 2 fills the first gap formed by the insulating sheath 4 and the first conductor 1, which can enhance the insulation performance and further isolate the current. On the other hand, it can play a buffering role, reduce the damage of external impact to the first conductor 1 and the insulating sheath 4, and improve the stability and service life of the cable.

[0045] Specifically, the heat dissipation component 6 includes a first arc-shaped groove 6001, a second arc-shaped groove 6002, and a third arc-shaped groove 6003 formed on the outer circumference of the second conductor 5. The first arc-shaped groove 6001, the second arc-shaped groove 6002, and the third arc-shaped groove 6003 are all filled with a second heat dissipation medium 8. The first arc-shaped groove 6001, the second arc-shaped groove 6002, and the third arc-shaped groove 6003 are formed on the outer circumference of the second conductor 5 and filled with the second heat dissipation medium 8, which increases the heat dissipation area and can quickly absorb and conduct the heat generated during the operation of the cable, effectively improving the heat dissipation efficiency and avoiding the impact of heat accumulation on the performance of the cable.

[0046] Specifically, the inner diameters of the first arc-shaped groove 6001, the second arc-shaped groove 6002, and the third arc-shaped groove 6003 increase sequentially. The sequentially increasing inner diameters of the first arc-shaped groove 6001, the second arc-shaped groove 6002, and the third arc-shaped groove 6003 form a multi-layer heat dissipation structure, which can dissipate heat more rationally according to the heat distribution, making the heat dissipation effect more uniform and efficient, and further improving the heat dissipation performance of the cable.

[0047] Specifically, the outer circumference of the first conductor 1 and the outer circumference of the second conductor 5 are surrounded by a first heat dissipation medium 7. Both the first heat dissipation medium 7 and the second heat dissipation medium 8 are silicone oil. The first heat dissipation medium 7 between the first conductor 1 and the second conductor 5 and the second heat dissipation medium 8 in the arc groove are both made of silicone oil. Silicone oil has good thermal conductivity and stability, can quickly transfer heat, effectively reduce the internal temperature of the cable, and improve the current carrying capacity and operational safety of the cable.

[0048] Specifically, the outer circumference of the second conductor 5 is provided with annular grooves 9. The annular grooves 9 are evenly distributed on the outer circumference of the second conductor 5 and are connected to the heat dissipation component 6. The annular grooves 9 are evenly distributed on the outer circumference of the second conductor 5 and are connected to the heat dissipation component 6, which allows the second heat dissipation medium 8 to form a circulation flow between the annular grooves 9 and the arc grooves, further enhancing the heat dissipation effect, accelerating heat dissipation, and ensuring the temperature stability of the cable during long-term operation.

[0049] Working principle: This cable transmits electrical energy through a stranded first conductor 1 and a single cylindrical second conductor 5. The stranded first conductor 1 consists of multiple wires, giving the cable excellent flexibility, facilitating laying in complex environments and handling equipment movement. Its multi-strand structure enhances mechanical strength, ensuring overall conductivity even if individual wires are damaged, and also reducing the skin effect. Meanwhile, the single cylindrical second conductor 5 is located in the center, working in conjunction with the first conductor 1 to improve the internal electric field distribution of the cable, making the electric field more uniform, reducing the electric field strength of the insulation layer, and improving insulation performance. The combination of the two increases the effective cross-sectional area of ​​the conductor, improves the current carrying capacity, reduces resistance and energy loss, and meets the needs of high-capacity power transmission. At the same time, the heat dissipation component 6 set on the outer circumference of the second conductor 5, together with the first heat dissipation medium 7 and the second heat dissipation medium 8, can accelerate the heat dissipation effect of the entire conductor, further improving the cable's current carrying capacity and safety.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high voltage cable coated conductor structure comprising a first conductor (1) and a second conductor (5), characterized in that, The first conductor (1) and the second conductor (5) are externally provided with an insulation assembly; The circumferential outer wall of the second conductor (5) is provided with a heat dissipation assembly (6) for accelerating heat dissipation of the cable; The insulation assembly is arranged outside the heat dissipation assembly (6).

2. A high voltage cable coated conductor construction according to claim 1, characterised in that, The number of the first conductors (1) is six groups, and the six groups of the first conductors (1) are stranded on the circumferential outer wall of the second conductor (5).

3. A high voltage cable coated conductor construction according to claim 2, characterised in that, The insulation assembly includes an insulation paint layer (3) coated on the outer wall of the first conductor (1), and the circumferential outer wall of the first conductor (1) is wrapped with an insulation sheath (4).

4. A high voltage cable coated conductor construction according to claim 3, characterised in that, The insulation sheath (4) and the first conductor (1) form a first gap, and the first gap is filled with an insulation filler (2).

5. A high voltage cable coated conductor construction according to claim 4, characterised in that, The heat dissipation assembly (6) includes a first arc-shaped groove (6001), a second arc-shaped groove (6002) and a third arc-shaped groove (6003) opened on the circumferential outer wall of the second conductor (5), and the interiors of the first arc-shaped groove (6001), the second arc-shaped groove (6002) and the third arc-shaped groove (6003) are filled with a second heat dissipation medium (8).

6. A high voltage cable coated conductor construction according to claim 5, characterised in that, The inner diameters of the first arc-shaped groove (6001), the second arc-shaped groove (6002) and the third arc-shaped groove (6003) increase in turn.

7. A high voltage cable coated conductor construction according to claim 6, characterised in that, The circumferential outer wall of the first conductor (1) and the circumferential outer wall of the second conductor (5) surround a first heat dissipation medium (7), and the first heat dissipation medium (7) and the second heat dissipation medium (8) are both silicon oil.

8. A high voltage cable coated conductor construction according to claim 7, characterised in that, The circumferential outer wall of the second conductor (5) is provided with a circular groove (9), the circular grooves (9) are equidistantly distributed on the circumferential outer wall of the second conductor (5), and the circular grooves (9) are in communication with the heat dissipation assembly (6).

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