High radiation electric reactor

Abstract

The utility model aims at providing a kind of high heat dissipation electric reactor, it includes iron core, coil and baffle, coil includes foil and insulating septum, foil and insulating septum are superimposed and are wound on iron core to form coil, a plurality of partitions are provided in coil to form a plurality of partition grooves, baffle is set between foil and insulating septum to be clamped, and the both ends of baffle extend from the both ends of coil, and baffle adjacent partition groove setting.

Description

Technical Field

[0001] This utility model relates to the technical field of reactors, and in particular to a high heat dissipation reactor. Background Technology

[0002] Reactors are core passive components in power systems and power electronics. By adjusting their inductance, they can achieve functions such as "limiting current changes, suppressing harmonics, and compensating reactive power". They are widely used in power grids, new energy, industrial control and other scenarios.

[0003] Reactors can be classified into different types according to different dimensions. For example, according to structure, they can be classified into foil-wound reactors and wire-wound reactors; according to magnetic circuit medium, they can be classified into air-core reactors and iron-core reactors; according to cooling method, they can be classified into dry-type reactors, oil-immersed reactors, water-cooled reactors, etc.

[0004] For example, Chinese patent document CN202422952U discloses a foil-wound dry-core reactor, which includes an iron core, iron yokes at both ends of the iron core, and a coil wound around the iron core. The coil is made of aluminum foil, with insulating prepreg bonded between the layers of aluminum foil, and the inner and outer surfaces of the coil are wrapped with insulating prepreg.

[0005] The aforementioned prior art involves dry-type reactors formed by winding aluminum foil around an iron core, typically used in indoor switchgear. During operation, these reactors generate heat due to eddy currents, requiring fans or other cooling devices for heat dissipation. However, because the iron core is located in the center and the gaps between the aluminum foil layers are small, airflow is difficult to effectively pass through the reactor for heat dissipation, resulting in poor heat dissipation. Therefore, to address these issues, the high-heat-dissipation reactor of this application is proposed. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high heat dissipation reactor that can improve heat dissipation efficiency.

[0007] The objective of this utility model is achieved through the following technical solution: A high heat dissipation reactor, comprising: Iron core; A coil, comprising a foil and an insulating diaphragm, wherein the foil and the insulating diaphragm are stacked and wound on the iron core to form the coil, and the coil has a plurality of spacers forming a plurality of slots; and A baffle is disposed between the foil and the insulating diaphragm to be clamped, and the two ends of the baffle extend from the two ends of the coil and are disposed adjacent to the slot.

[0008] Optionally, the foil is aluminum foil or copper foil.

[0009] Optionally, a side plate is provided on each of the opposite sides of the iron core, and the two ends of the side plate extend from the two ends of the coil.

[0010] Optionally, a U-shaped groove is provided on the end of the side plate.

[0011] Optionally, the iron core is formed by stacking several silicon steel sheets in sequence.

[0012] Optionally, the coil further includes two terminal blocks, which are respectively welded to both ends of the foil, with one terminal block located inside the coil and the other terminal block located outside the coil, and the two terminal blocks extending from both ends of the coil.

[0013] Optionally, the terminal block is provided with wiring holes.

[0014] Optionally, the outer wall of the coil is also covered with an outer film.

[0015] Optionally, the spacer is made of glass fiber reinforced plastic.

[0016] Optionally, both the baffle and the insulating diaphragm are made of AMA material.

[0017] Compared with the prior art, the present invention has at least the following advantages: This utility model discloses a high-heat-dissipation reactor, comprising an iron core, a coil, and baffles. The coil includes foil and an insulating diaphragm, which are stacked and wound on the iron core to form the coil. Several spacers are arranged within the coil to form several slots. The baffles are positioned between the foil and the insulating diaphragm and clamped together, with both ends of the baffles extending from both ends of the coil and positioned adjacent to the slots. Thus, for foil-wound dry-core reactors, the slot structure formed by the baffles and spacers works together to effectively improve the reactor's heat dissipation efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a high heat dissipation reactor according to one embodiment of the present invention; Figure 2 for Figure 1A schematic diagram of the high heat dissipation reactor in its wound state is shown. Figure 3 for Figure 1 A partial schematic diagram of the high heat dissipation reactor from another angle; Figure 4 for Figure 1 The front view of the high heat dissipation reactor is shown.

[0020] Explanation of reference numerals in the attached figures: 10. High heat dissipation reactor; 100. Iron core; 200. Coil; 300. Baffle; 210. Foil; 220. Insulating diaphragm; 400. Spacer bar; 201. Spacing; 500. Side plate; 510. U-shaped groove; 230. Terminal block; 231. Wiring hole; 600. Outer film. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0022] like Figures 1 to 4 As shown, a high heat dissipation reactor 10 includes an iron core 100, a coil 200, and a baffle 300. The coil 200 includes a foil 210 and an insulating diaphragm 220. The foil 210 and the insulating diaphragm 220 are stacked and wound on the iron core 100 to form the coil 200. A plurality of spacers 400 are provided inside the coil 200 to form a plurality of slots 201. The baffle 300 is disposed between the foil 210 and the insulating diaphragm 220 to be clamped, and both ends of the baffle 300 extend from both ends of the coil 200, and the baffle 300 is disposed adjacent to the slots 201.

[0023] It should be noted that after the foil 210 and the insulating diaphragm 220 are stacked, one end of the foil 210 is placed close to the iron core 100 before winding, so that the foil 210 and the insulating diaphragm 220 are wound on the outer wall of the iron core 100 to form a coil 200 structure. The foil 210 and the iron core 100 are separated by the insulating diaphragm 220, thus ensuring good insulation between the iron core 100 and the foil 210. Furthermore, during the winding process, after a certain number of turns, spacers 400 are attached and fixed to the outer wall of the wound foil 210, and then the foil 210 and the insulating diaphragm 220 are wound again. In this way, multiple slots 201 are formed on the wound coil 200 by the spacers 400. It should be noted that the number of turns of the foil 210 and insulating diaphragm 220 to place the spacer 400 is set according to actual needs, as long as the spacer 400 can be used to form spacer slots 201 in the coil 200 formed by the winding. Furthermore, it should be noted that the cross-sectional shape of the iron core 100 used in this application can be square or circular, and the shape of the iron core 100 can be set according to actual needs. Further, when the foil 210 and insulating diaphragm 220 are about to be fully wound, a baffle 300 is placed on the foil 210, and then the foil 210 and insulating diaphragm 220 continue to be wound to press the baffle 300 tightly. For example, according to the design, the foil 210 and insulating membrane 220 can be wound ten times to form a coil 200. Therefore, when the foil 210 and insulating membrane 220 have been wound eight or nine times, the baffle 300 can be placed so that the baffle 300 can be clamped when the remaining foil 210 and insulating membrane 220 are wound. It should be noted that the above embodiment of the foil 210 and insulating membrane 220 being wound ten times to form a coil 200 is only for illustrating the placement of the baffle 300 and is not a limitation on the formation of the coil 200 by winding the foil 210 and insulating membrane 220. It is conceivable that the baffle 300 can be placed during the winding of the foil 210 and insulating membrane 220 so that the baffle 300 can be clamped when the foil 210 and insulating membrane 220 are wound subsequently. Moreover, the two ends of the baffle 300 extend a certain distance from the two ends of the coil 200. In this way, the slot 201 formed by the spacers 400 is located on the side of the baffle 300 closest to the iron core 100. When subsequently assembled into the cabinet, as the fan drives airflow through the high-heat-dissipation reactor 10 of this application, the air is blocked by the extended baffle 300 and flows through the slot 201. Thus, for foil-wound dry-core reactors, the slot 201 structure formed by the baffle 300 and the spacers 400 works together to effectively improve the reactor's heat dissipation efficiency.In one embodiment, two baffles 300 can be provided as needed, with the two baffles 300 located on the directions of two adjacent right-angled sides of the square iron core 100, so that the two baffles 300 can effectively guide air to flow through the slot 201. Furthermore, it should be noted that... Figure 4 The dashed area in the figure represents the structure of the foil 210 and insulating diaphragm 220 wound into coil 200. This is because the foil 210 and insulating diaphragm 220 are thin, and when wound into coil 200, they form a wound, layered structure. Since it is difficult to show this sheet-like layered structure in the figure, the winding structure of the foil 210 and insulating diaphragm 220 is represented by a dashed area to more conveniently and clearly show the winding structure of the foil 210 and insulating diaphragm 220. It should be emphasized that this dashed area does not represent the cross-sectional structure of coil 200.

[0024] In one embodiment, the foil 210 is aluminum foil or copper foil. Further, in one embodiment, the thickness of the foil 210 is 0.1 mm to 2.5 mm. Preferably, the thickness of the foil 210 is 0.5 mm.

[0025] like Figures 1 to 3 As shown, in one embodiment, a side plate 500 is provided on each of the opposite sides of the iron core 100, and the two ends of the side plate 500 extend from the two ends of the coil 200.

[0026] It should be noted that, in order to facilitate the fixed installation of the high heat dissipation reactor 10 of this application on the reactor base, a side plate 500 is provided on each of the opposite sides of the iron core 100. The side plate 500 extends from the end of the coil 200. In this way, the high heat dissipation reactor 10 can be fixed by fixing the two side plates 500.

[0027] like Figures 1 to 3 As shown, in one embodiment, a U-shaped groove 510 is provided on the end of the side plate 500. In this way, the side plate 500 can be conveniently and quickly fixedly installed on the base of the reactor through the U-shaped groove 510.

[0028] In one embodiment, the iron core 100 is formed by sequentially stacking several silicon steel sheets. Further, in another embodiment, the side sheets 500 are also made of silicon steel.

[0029] like Figures 1 to 4 As shown, in one embodiment, the coil 200 further includes two terminal blocks 230, which are respectively welded to both ends of the foil 210. One terminal block 230 is located inside the coil 200, and the other terminal block 230 is located outside the coil 200. The two terminal blocks 230 extend from both ends of the coil 200.

[0030] It should be noted that when the foil 210 is unfolded, the two terminal blocks 230 are located at opposite ends of the foil 210 along its length. When the foil 210 and insulating diaphragm 220 are wound around the iron core 100, one terminal block 230 will be positioned closer to the iron core 100, i.e., inside the subsequently formed coil 200, while the other terminal block 230 will be positioned further away from the iron core 100, i.e., outside the subsequently formed coil 200. Furthermore, the two terminal blocks 230 extend from both ends of the coil 200. This facilitates wiring between the two terminal blocks 230 during subsequent installation and use.

[0031] Furthermore, such as Figures 1 to 4 As shown, in one embodiment, the terminal block 230 has a wiring hole 231. Thus, when connecting wires later, the wires can be stably connected to the terminal block 230 using screws and nuts.

[0032] like Figure 1 As shown, in one embodiment, the outer wall of the coil 200 is further covered with an outer film 600. For example, the outer film 600 is a polyester film. By wrapping the outer wall of the coil 200 with the outer film 600, it can provide insulation protection.

[0033] In one embodiment, the spacer 400 is made of glass fiber reinforced plastic. Further, in one embodiment, the spacer 400 has an H-shaped cross-section, thus using the spacer 400 to space the foil 210 to form the slots 201.

[0034] In one embodiment, both the baffle 300 and the insulating diaphragm 220 are made of AMA material. Specifically, both the baffle 300 and the insulating diaphragm 220 are AMA insulating paper. AMA insulating paper is a high-performance electrical insulating material, officially named AMA polyester film aramid fiber paper flexible composite material. It is composed of two aramid fiber papers bonded to a polyester film in the middle using Class F insulating adhesive. This material has excellent high-temperature resistance and can maintain stable electrical insulation properties and mechanical strength at high temperatures.

[0035] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-heat-dissipation reactor, characterized in that, include: Iron core; A coil, comprising a foil and an insulating diaphragm, wherein the foil and the insulating diaphragm are stacked and wound on the iron core to form the coil, and a plurality of spacers are provided inside the coil to form a plurality of slots; and A baffle is disposed between the foil and the insulating diaphragm to be clamped, and both ends of the baffle extend from both ends of the coil, and the baffle is disposed adjacent to the slot.

2. The high heat dissipation reactor according to claim 1, characterized in that, The foil is aluminum foil or copper foil.

3. The high heat dissipation reactor according to claim 1, characterized in that, The iron core has a side plate on each of its opposite sides, and the two ends of the side plate extend from the two ends of the coil.

4. The high heat dissipation reactor according to claim 3, characterized in that, A U-shaped groove is provided on the end of the side plate.

5. The high heat dissipation reactor according to claim 3, characterized in that, The iron core is composed of several silicon steel sheets stacked sequentially.

6. The high heat dissipation reactor according to claim 1, characterized in that, The coil also includes two terminal blocks, which are respectively welded to both ends of the foil. One of the terminal blocks is located inside the coil, and the other terminal block is located outside the coil. The two terminal blocks extend from both ends of the coil.

7. The high heat dissipation reactor according to claim 6, characterized in that, The terminal block has wiring holes.

8. The high heat dissipation reactor according to claim 1, characterized in that, The outer wall of the coil is also covered with an outer film.

9. The high heat dissipation reactor according to claim 1, characterized in that, The spacer is made of glass fiber reinforced plastic.

10. The high heat dissipation reactor according to claim 1, characterized in that, Both the baffle and the insulating diaphragm are made of AMA material.

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