Ultrahigh-voltage direct-current combined transposed conductor

Abstract

The utility model discloses an ultrahigh-voltage direct-current combined transposed conductor, which relates to the technical field of transposed conductors and comprises a plurality of groups of transposed conductor bodies, the plurality of groups of transposed conductor bodies are arranged in a laminated manner, and acetal insulating paint layers are arranged on the outer walls of the plurality of groups of transposed conductor bodies. The end, away from the transposed conductor body, of the acetal insulating paint layer is provided with insulating lining paper, the end, away from the acetal insulating paint layer, of the insulating lining paper is provided with a first silicon carbide heat conduction layer, and the end, away from the insulating lining paper, of the first silicon carbide heat conduction layer is provided with a second silicon carbide heat conduction layer. According to the utility model, through cooperation of the first silicon carbide heat conduction layer, the second silicon carbide heat conduction layer, the heat conduction copper sheet and the heat conduction silica gel particles, heat on the transposed conductor body can be absorbed by the first silicon carbide heat conduction layer and conducted to the second silicon carbide heat conduction layer by the heat conduction copper sheet and the heat conduction silica gel particles, so that the heat dissipation effect is good; therefore, the high-temperature-resistant effect of the transposed conductor body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transposed conductors, in particular to an ultra-high voltage direct current combined transposed conductor. Background Art

[0002] The transposed conductor is a winding wire made of a certain odd number of enameled flat wires arranged in two rows with wide-side contact, and the upper and lower edges of the two rows of enameled flat wires are transposed in the same direction as required, and are continuously and tightly wrapped with electrical insulating paper tape in multiple layers. The ultra-high voltage DC combined transposed conductor is generally used for the windings of large power transformers. Compared with ordinary flat wires, the ultra-high voltage DC combined transposed conductor has many advantages, which can greatly reduce load losses, reduce the temperature rise of winding hot spots, and improve the mechanical strength of windings. At the same time, due to its relatively small size, it reduces the manufacturing cost of the transformer.

[0003] The Chinese utility model patent announcement number CN218447278U discloses a high-voltage transposed conductor with a pressure-resistant function. In order to solve the problem that the existing high-voltage transposed conductor generally does not have a pressure-resistant support frame structure, resulting in poor pressure resistance, easy deformation after being subjected to external pressure, thereby causing internal damage and affecting user use, the outer wall of the high-voltage transposed conductor body is provided with an outer PE protective sleeve, and the interior of the high-voltage transposed conductor body is provided with an inner insulating sheath layer; it also includes: an outer pressure-resistant support frame, which is arranged between the outer PE protective sleeve and the inner insulating sheath layer, and both ends of the outer pressure-resistant support frame are provided with end mounting pieces, and each end is provided with four end mounting pieces, and the four end mounting pieces are distributed on the four surfaces of the outer wall of the inner insulating sheath layer, and an arc-shaped connector is provided between adjacent end mounting pieces; a metal reinforcement rod, which is threadedly installed between the two end mounting pieces, and a plurality of metal reinforcement rods are provided, but the above-mentioned transposed conductor does not have a heat dissipation function, and the transposed conductor will generate a large amount of heat after long-term use, so that the overall high temperature resistance of the transposed conductor is not good, thereby greatly reducing the service life of the transposed conductor. Utility Model Content

[0004] In order to improve the problem that the existing transposed conductors mentioned above have no heat dissipation function, the transposed conductors will generate a large amount of heat after long-term use, making the overall high-temperature resistance of the transposed conductors poor, thereby greatly reducing the service life of the transposed conductors, the utility model provides an ultra-high voltage DC combined transposed conductor.

[0005] The utility model provides an ultra-high voltage direct current combined transposed conductor, which adopts the following technical solution:

[0006] A super-high voltage direct current combined transposed conductor comprises a plurality of transposed conductor bodies, wherein the plurality of transposed conductor bodies are arranged in a stacked manner, the outer walls of the plurality of transposed conductor bodies are all provided with an acetal insulating varnish layer, an insulating lining paper is provided at one end of the acetal insulating varnish layer away from the transposed conductor body, a first silicon carbide heat-conducting layer is provided at one end of the insulating lining paper away from the acetal insulating varnish layer, a second silicon carbide heat-conducting layer is provided at one end of the first silicon carbide heat-conducting layer away from the insulating lining paper, a heat-conducting copper sheet and heat-conducting silica gel particles are respectively installed between the first silicon carbide heat-conducting layer and the second silicon carbide heat-conducting layer, a PE protective sleeve is provided at one end of the second silicon carbide heat-conducting layer away from the first silicon carbide heat-conducting layer, and a buffer component is provided between the second silicon carbide heat-conducting layer and the PE protective sleeve.

[0007] By adopting the above technical solution, the first silicon carbide thermal conductive layer can be used to absorb the heat on the transposed conductor body, and the heat on the first silicon carbide thermal conductive layer can be absorbed and conducted to the surface of the second silicon carbide thermal conductive layer through the thermal conductive copper sheet and the thermal conductive silica gel particles, thereby achieving heat conduction, thereby improving the high temperature resistance of the transposed conductor.

[0008] Optionally, the thermally conductive copper sheet and the thermally conductive silicone particles are provided in multiple groups, the thermally conductive copper sheet and the thermally conductive silicone particles are staggered, the longitudinal cross-section of the thermally conductive copper sheet presents a "V"-shaped structure, and the two ends of the thermally conductive copper sheet and the thermally conductive silicone particles are respectively bonded to the surface of one side of the first silicon carbide thermal conductive layer and the second silicon carbide thermal conductive layer.

[0009] By adopting the above technical solution, the heat on the first silicon carbide heat-conducting layer can be adsorbed and conducted to the surface of the second silicon carbide heat-conducting layer through the heat-conducting copper sheet and the heat-conducting silica gel particles, which has good heat-conducting effect and is easy to use.

[0010] Optionally, the top and bottom of the PE protective sleeve are connected with rubber protrusions at equal intervals.

[0011] By adopting the above technical solution, the anti-slip and wear resistance of the PE protective sleeve can be increased by the rubber protrusions, thereby making the transposed conductor more durable.

[0012] Optionally, the insulating lining paper is arranged in a honeycomb shape.

[0013] By adopting the above technical solution and arranging the insulating lining paper in a honeycomb shape, the supporting strength can be improved, so that the overall bending strength of the transposed conductor body is high.

[0014] Optionally, the buffer assembly includes a first fixed plate, the first fixed plate is installed on the outside of the second silicon carbide thermal conductive layer, a second fixed plate is installed on the inside of the PE protective cover, and a buffer spring is connected between the first fixed plate and the second fixed plate.

[0015] By adopting the above technical solution, when the transposed conductor body is subjected to pressure shock, a plurality of buffer springs are compressed and restored under the action of elastic force, so that the pressure can be dispersed and offset, thereby improving the pressure resistance of the transposed conductor body.

[0016] Optionally, a telescopic rod is installed in the inner cavity of the buffer spring, and two ends of the telescopic rod are respectively connected to the first fixing plate and the second fixing plate.

[0017] By adopting the above technical solution and setting the telescopic rod, the buffer spring can be guided.

[0018] In summary, the present invention has at least one of the following beneficial effects:

[0019] (1) Through the coordinated arrangement of the first silicon carbide heat-conducting layer, the second silicon carbide heat-conducting layer, the heat-conducting copper sheet and the heat-conducting silicone particles, the first silicon carbide heat-conducting layer can be used to absorb the heat on the transposed conductor body and the heat-conducting copper sheet and the heat-conducting silicone particles can be conducted to the second silicon carbide heat-conducting layer, thereby achieving good heat dissipation effect and improving the high temperature resistance of the transposed conductor body.

[0020] (2) Through the coordinated arrangement of the first fixing plate, the buffer spring, the second fixing plate and the telescopic rod, when the transposed conductor body is subjected to pressure shock, the plurality of buffer springs can disperse and offset the pressure, thereby improving the pressure resistance of the transposed conductor body, ensuring its strength, and thus extending the service life of the transposed conductor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the insulating lining paper structure of the utility model;

[0024] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0025] In the figure: 1. Insulating lining paper; 2. Acetal insulating varnish layer; 3. Transposed conductor body; 4. First silicon carbide thermal conductive layer; 5. Second silicon carbide thermal conductive layer; 6. PE protective cover; 7. Rubber protrusion; 8. Thermal conductive copper sheet; 9. Thermal conductive silicone particles; 10. Buffer assembly; 1001. First fixed plate; 1002. Buffer spring; 1003. Second fixed plate; 11. Telescopic rod. Implementation

[0026] The following is combined with Figure 1-3 The utility model is described in further detail.

[0027] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The utility model provides an embodiment: an ultra-high voltage direct current combined transposed conductor, comprising a plurality of transposed conductor bodies 3, the plurality of transposed conductor bodies 3 are arranged in a stacked manner, the outer walls of the plurality of transposed conductor bodies 3 are all provided with an acetal insulating paint layer 2, an end of the acetal insulating paint layer 2 away from the transposed conductor body 3 is provided with an insulating lining paper 1, and the insulating lining paper 1 is arranged in a honeycomb shape. By arranging the insulating lining paper 1 in a honeycomb shape, the supporting strength can be improved, so that the overall bending strength of the transposed conductor body 3 is high.

[0028] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 The end of the insulating backing paper 1 away from the acetal insulating varnish layer 2 is provided with a first silicon carbide heat conductive layer 4, and the end of the first silicon carbide heat conductive layer 4 away from the insulating backing paper 1 is provided with a second silicon carbide heat conductive layer 5. A heat conductive copper sheet 8 and a heat conductive silicone particle 9 are respectively installed between the first silicon carbide heat conductive layer 4 and the second silicon carbide heat conductive layer 5. The heat conductive copper sheet 8 and the heat conductive silicone particle 9 are provided in multiple groups. The heat conductive copper sheet 8 and the heat conductive silicone particle 9 are staggered. The longitudinal section of the heat conductive copper sheet 8 is a "V"-shaped structure. The two ends of the heat conductive copper sheet 8 and the heat conductive silicone particle 9 are respectively attached to the surface of one side of the first silicon carbide heat conductive layer 4 and the second silicon carbide heat conductive layer 5. The heat on the first silicon carbide heat conductive layer 4 can be adsorbed and conducted to the surface of the second silicon carbide heat conductive layer 5 through the heat conductive copper sheet 8 and the heat conductive silicone particle 9, and the heat conductive effect is good and easy to use.

[0029] Please refer to the attached figure in the instruction manual Figure 1 A PE protective sleeve 6 is provided at one end of the second silicon carbide heat conducting layer 5 away from the first silicon carbide heat conducting layer 4, and a plurality of rubber protrusions 7 are connected at equal intervals at the top and bottom of the PE protective sleeve 6. The rubber protrusions 7 can increase the anti-slip and wear resistance of the PE protective sleeve 6, thereby making the transposed conductor more durable.

[0030] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3A buffer assembly 10 is arranged between the second silicon carbide heat conductive layer 5 and the PE protective sleeve 6. The buffer assembly 10 includes a first fixed plate 1001, the first fixed plate 1001 is fixedly installed on the outside of the second silicon carbide heat conductive layer 5, a second fixed plate 1003 is fixedly installed on the inside of the PE protective sleeve 6, and a buffer spring 1002 is fixedly connected between the first fixed plate 1001 and the second fixed plate 1003. When the transposed conductor body 3 is subjected to pressure shock, a plurality of buffer springs 1002 are compressed by force and restored under the action of elastic force, which can disperse and offset the pressure received, thereby improving the compression resistance of the transposed conductor body 3. A telescopic rod 11 is installed in the inner cavity of the buffer spring 1002, and the two ends of the telescopic rod 11 are fixedly connected to the first fixed plate 1001 and the second fixed plate 1003 respectively. Through the setting of the telescopic rod 11, the buffer spring 1002 can be guided.

[0031] Working principle: When in use, the first silicon carbide thermal conductive layer 4 can be used to absorb the heat on the transposed conductor body 3, and the heat on the first silicon carbide thermal conductive layer 4 can be absorbed and conducted to the surface of the second silicon carbide thermal conductive layer 5 through the thermal conductive copper sheet 8 and the thermal conductive silica gel particles 9, so as to conduct the heat, thereby improving the high temperature resistance of the transposed conductor. Through the coordinated arrangement of the insulating lining paper 1 and the acetal insulating varnish layer 2, the transposed conductor body 3 has better insulation performance, and by arranging the insulating lining paper 1 in a honeycomb shape, the internal structure of the insulating lining paper 1 is more stable, thereby improving the strength of the insulating lining paper 1.

[0032] When the transposed conductor body 3 is subjected to pressure shock, the PE protective sleeve 6 moves toward the direction of the second silicon carbide thermal conductive layer 5, causing the telescopic rod 11 to contract. At this time, the buffer spring 1002 is compressed, and the pressure transmitted by the PE protective sleeve 6 is converted into elastic potential energy, and the elasticity of the buffer spring 1002 is restored, so that the PE protective sleeve 6 moves in the opposite direction, converts the elastic potential energy into kinetic energy and releases it in the original direction, thereby reducing the pressure transmitted by the PE protective sleeve 6 to the first silicon carbide thermal conductive layer 4, thereby reducing the impact force on the transposed conductor body 3. Several buffer springs 1002 can disperse and offset the pressure, thereby improving the compressive performance of the transposed conductor body 3, ensuring its strength, and thus extending the service life of the transposed conductor body 3.

[0033] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An ultra-high voltage direct current combined transposed conductor, comprising a plurality of transposed conductor bodies (3), characterized in that: A plurality of groups of transposed conductor bodies (3) are arranged in a stacked manner, and the outer walls of the plurality of groups of transposed conductor bodies (3) are all provided with an acetal insulating varnish layer (2), an insulating lining paper (1) is provided at one end of the acetal insulating varnish layer (2) away from the transposed conductor body (3), a first silicon carbide heat conductive layer (4) is provided at one end of the insulating lining paper (1) away from the acetal insulating varnish layer (2), a second silicon carbide heat conductive layer (5) is provided at one end of the first silicon carbide heat conductive layer (4) away from the insulating lining paper (1), a heat conductive copper sheet (8) and heat conductive silica gel particles (9) are respectively installed between the first silicon carbide heat conductive layer (4) and the second silicon carbide heat conductive layer (5), a PE protective sleeve (6) is provided at one end of the second silicon carbide heat conductive layer (5) away from the first silicon carbide heat conductive layer (4), and a buffer component (10) is provided between the second silicon carbide heat conductive layer (5) and the PE protective sleeve (6).

2. The ultra-high voltage direct current combined transposed conductor according to claim 1, characterized in that: The thermally conductive copper sheet (8) and the thermally conductive silicone particles (9) are provided in multiple groups. The thermally conductive copper sheet (8) and the thermally conductive silicone particles (9) are arranged in a staggered manner. The longitudinal section of the thermally conductive copper sheet (8) presents a "V"-shaped structure. The two ends of the thermally conductive copper sheet (8) and the thermally conductive silicone particles (9) are respectively bonded to the surface of one side of the first silicon carbide thermal conductive layer (4) and the second silicon carbide thermal conductive layer (5).

3. The ultra-high voltage direct current combined transposed conductor according to claim 1, characterized in that: The top and bottom of the PE protective sleeve (6) are connected with rubber protrusions (7) at equal intervals.

4. The ultra-high voltage direct current combined transposed conductor according to claim 1, characterized in that: The insulating lining paper (1) is arranged in a honeycomb shape.

5. The ultra-high voltage direct current combined transposed conductor according to claim 1, characterized in that: The buffer assembly (10) comprises a first fixing plate (1001), the first fixing plate (1001) being mounted on the outside of the second silicon carbide heat conducting layer (5), a second fixing plate (1003) being mounted on the inside of the PE protective sleeve (6), and a buffer spring (1002) being connected between the first fixing plate (1001) and the second fixing plate (1003).

6. The ultra-high voltage direct current combined transposed conductor according to claim 5, characterized in that: A telescopic rod (11) is installed in the inner cavity of the buffer spring (1002), and two ends of the telescopic rod (11) are respectively connected to the first fixing plate (1001) and the second fixing plate (1003).

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