A resonant reactor

Abstract

The utility model belongs to the technical field of electric reactor, disclose a kind of resonant electric reactor. The resonant electric reactor includes bottom plate, and bottom plate is fixed with outer tube, and spiral coil is arranged to the inner wall of outer tube, and coil is fixed on the inner wall of outer tube by multiple positioning cards, and positioning card is strip structure, and length is greater than the spiral height of coil, and multiple limit slots suitable for coil are set in the side of coil of positioning card, and coil is contained in limit slot, and the both ends of coil are respectively connected with first terminal and second terminal by penetrating the side wall of outer tube. When using, external circuit is electrically connected with binding post. The resonant electric reactor disclosed by the utility model is compact in structure, reliable in fixation, smooth in heat dissipation path, can effectively release internal pressure, excellent in insulation performance, and high in safety.

Description

Technical Field

[0001] This utility model belongs to the field of reactor technology, specifically relating to a resonant reactor. Background Technology

[0002] Reactors are important components commonly used in power systems. Resonant reactors are often used in series with capacitors to form a resonant circuit, used to filter out harmonics of specific frequencies or to compensate for reactive power. Existing resonant reactors typically consist of basic components such as coils, iron cores, and terminals.

[0003] However, in practical applications, especially in high-voltage, high-current, or complex electromagnetic environments, traditional reactor structures have the following problems: the coil fixing method is not stable enough, and it is prone to displacement or loosening when subjected to vibration or impact, affecting electrical performance or even causing failure; most importantly, during long-term operation, the coil generates a large amount of heat due to the Joule effect, causing its internal temperature to rise sharply. If the heat cannot be dissipated in time, the encapsulation material or internal air will expand, causing increased internal pressure accumulation, which poses a risk of the insulation layer cracking or even bursting, resulting in poor safety. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a resonant reactor, including a base plate with heat dissipation holes, an outer cylinder fixed on the base plate, a spiral coil inside the outer cylinder, and a positioning card with a limit groove to fix the coil to the inner wall of the outer cylinder. It has a compact structure, reliable fixation, smooth heat dissipation path, can effectively release internal pressure, excellent insulation performance, and high safety.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A resonant reactor includes a base plate 4, an outer cylinder 3 fixed on the base plate 4, a spiral coil 5 disposed against the inner wall of the outer cylinder 3, the coil 5 being fixed to the inner wall of the outer cylinder 3 by a plurality of positioning clips 6, the positioning clips 6 being strip-shaped structures with a length greater than the spiral height of the coil 5, the positioning clips 6 having a plurality of limiting grooves 12 adapted to the coil 5 on the side facing the coil 5, the coil 5 being accommodated in the limiting grooves 12, and the two ends of the coil 5 passing through the side wall of the outer cylinder 3 and respectively connected to a first terminal 801 and a second terminal 802.

[0006] The outer cylinder 3 is an epoxy resin insulating cylinder structure. The upper part of the cylinder is an open structure, covering the coil 5 and the positioning card 6. Multiple first threaded holes 701 are provided on the end face. Each first threaded hole 701 is threadedly connected to the first insulating bolt 201 that penetrates the bottom plate 4 to fix the bottom plate 4 and the outer cylinder 3.

[0007] Each positioning card 6 is fixed to the outer cylinder 3 by multiple second insulating bolts 202. Each second insulating bolt 202 passes through the outer cylinder 3 and the positioning card 6 in sequence and is threaded with an insulating nut 702 to fix the positioning card 6 to the outer cylinder 3.

[0008] Each of the positioning cards 6 has a second threaded hole 703 at one end near the base plate 4. Each second threaded hole 703 is threadedly connected to a third insulating bolt 203 that passes through the base plate 4 to fix the base plate 4 and the positioning card 6.

[0009] The base plate 4 has a circular heat dissipation hole 14, and a plurality of arc-shaped heat dissipation holes 15 are arranged at intervals around the circular heat dissipation hole 14. The third insulating bolt 203 is arranged at the intervals of the plurality of arc-shaped heat dissipation holes 15.

[0010] The first terminal 801 and the second terminal 802 are made of copper.

[0011] The first terminal 801 and the second terminal 802 are respectively fixed to the outer cylinder 3 by two terminals 1. The terminals 1 are threaded rod-shaped structures. A limiting ring 101 is provided in the middle of the threaded rod-shaped structure to engage with the first terminal 801 or the second terminal 802. One end of the terminal 1 passes through the first terminal 801 or the second terminal 802 and the outer cylinder 3 in sequence. A nut 13 is threadedly connected inside the outer cylinder 3.

[0012] An outer liner 9 is provided between the first terminal 801 or the second terminal 802 and the outer cylinder 3. The side of the outer liner 9 near the outer cylinder 3 is a concave arc surface that fits into the outer cylinder 3, and the side of the outer liner 9 near the first terminal 801 or the second terminal 802 is a flat surface that fits into the first terminal 801 or the second terminal 802.

[0013] An inner liner plate 10 is provided between the nut 13 and the outer cylinder 3. The inner liner plate 10 has a convex arc surface that fits against the outer cylinder 3 on the side closer to the outer cylinder 3, and a flat surface on the side closer to the nut 13.

[0014] The outer liner 9 is made of aluminum, and the inner liner 10 is made of epoxy resin.

[0015] The two ends of the coil 5 are connected to the first terminal 801 and the second terminal 802 respectively through L-shaped copper connectors 11. One end of the connector 11 passes through the outer cylinder 3 and is fixedly connected to the first terminal 801 or the second terminal 802, while the other end is perpendicular to the inner wall of the outer cylinder 3 and is fixedly connected to the end of the coil 5.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model employs a positioning clip 6 with a limiting groove 12 to fix the spiral coil 5 to the inner wall of the outer cylinder 3. The coil 5 is raised above the base plate 4 by the positioning clip 6, forming an open heat dissipation channel between the coil 5 and the base plate 4, as well as between adjacent spiral coils of the coil 5. This effectively increases the heat dissipation area of ​​the coil and accelerates the convection and radiation of heat to the surrounding environment, thereby reducing the risk of temperature rise and internal pressure accumulation from the source. This provides a natural pressure relief channel for any possible trace expansion gas, preventing the unlimited increase of pressure in the confined space and eliminating the risk of explosion caused by excessive internal pressure. In addition, multiple positioning clips 6 with limiting grooves 12 are used to limit the axial and radial positioning of the coil 5 relative to the outer cylinder 3, making the coil 5 more stable.

[0017] 2. This utility model, through the combined design of the base plate 4, outer cylinder 3, and positioning clip 6, and their mutual fixation by insulating bolts, achieves dual fixation (axial tightening and radial locking and limiting) of the coil 5 on the base plate 4, greatly enhancing the mechanical stability of the coil 5 and effectively preventing it from shifting or loosening due to vibration or electromagnetic force during operation. Simultaneously, multiple insulation designs (inner liner, base plate, outer cylinder) constitute a reliable insulation barrier, improving the overall insulation capacity and ensuring safe operation under high voltage.

[0018] 3. In addition to the circular heat dissipation holes 14, the base plate 4 of this utility model has multiple arc-shaped heat dissipation holes 15, and a third insulating bolt 203 is provided at the interval of the arc-shaped heat dissipation holes 15. This increases the heat dissipation channels and ensures the stability of the connection between the positioning card 6 and the base plate 4.

[0019] 4. By setting an outer liner plate 9 and an inner liner plate 10 with an arc surface structure, this utility model makes the terminal block 1 and nut 13 more stable when fixing the terminal.

[0020] In summary, this utility model has a compact structure, reliable fixation, unobstructed heat dissipation path, can effectively release internal pressure, has excellent insulation performance, and high safety. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention from the first direction.

[0022] Figure 2 This is a three-dimensional structural diagram of the second direction of this utility model.

[0023] Figure 3 This is a cross-sectional view of the present invention.

[0024] Figure 4 This is a bottom view of the present invention.

[0025] Figure 5This is a schematic diagram of the positioning card 6 described in this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the outer cylinder 3 of this utility model.

[0027] Figure 7 This is a schematic diagram of the structure of the terminal block 1 described in this utility model.

[0028] In the diagram, 1 is the terminal block, 101 is the limiting ring, 201 is the first insulating bolt, 202 is the second insulating bolt, 203 is the third insulating bolt, 3 is the outer cylinder, 4 is the base plate, 5 is the coil, 6 is the positioning clip, 701 is the first threaded hole, 702 is the insulating nut, 703 is the second threaded hole, 801 is the first terminal, 802 is the second terminal, 9 is the outer liner plate, 10 is the inner liner plate, 11 is the connector, 12 is the limiting groove, 13 is the nut, 14 is the circular heat dissipation hole, and 15 is the arc-shaped heat dissipation hole. Detailed Implementation

[0029] The structural and working principles of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 2 , Figure 3 As shown, a resonant reactor includes a base plate 4, on which an outer cylinder 3 is fixed for mechanical protection. A spiral coil 5 is disposed against the inner wall of the outer cylinder 3. The coil 5 is fixed to the inner wall of the outer cylinder 3 by four positioning clips 6. The four positioning clips 6 provide uniform limiting force to ensure the coil is subjected to balanced force and the fixation is more reliable. This design greatly enhances the rigidity and vibration resistance of the overall structure. The positioning clips 6 are strip-shaped structures (see...). Figure 5 The length is greater than the spiral height of the coil 5. The positioning card 6 has 6 limiting grooves 12 that are adapted to the coil 5 on the side facing the coil 5. The coil 5 is housed in the limiting grooves 12 to realize the axial and radial limiting of the coil 5 relative to the outer cylinder 3, effectively preventing the coil 5 from shifting or deforming during working vibration and ensuring its structural stability. The two ends of the coil 5 pass through the side wall of the outer cylinder 3 and are respectively connected to the first terminal 801 and the second terminal 802.

[0031] The outer cylinder 3 is an epoxy resin insulating cylinder structure. The upper part of the cylinder is open, covering the coil 5 and the positioning card 6. Eight first threaded holes 701 are provided on the end face (see Figure 6 Each first threaded hole 701 is threadedly connected to the first insulating bolt 201 that passes through the base plate 4 to fix the base plate 4 and the outer cylinder 3.

[0032] Each of the positioning cards 6 is fixed to the outer cylinder 3 by two second insulating bolts 202. Each second insulating bolt 202 passes through the outer cylinder 3 and the positioning card 6 in sequence and is threaded with an insulating nut 702 to fix the positioning card 6 to the outer cylinder 3.

[0033] like Figure 5 As shown, each of the positioning cards 6 has a second threaded hole 703 at one end near the base plate 4. Each second threaded hole 703 is threadedly connected to a third insulating bolt 203 that penetrates the base plate 4 to fix the base plate 4 and the positioning card 6. Through the above structural arrangement, a double mechanical fixation is formed, which constitutes a robust mechanical support and electrical isolation system.

[0034] like Figure 4 As shown, a circular heat dissipation hole 14 is provided on the base plate 4, and four arc-shaped heat dissipation holes 15 are arranged around the circular heat dissipation hole 14 at intervals. The third insulating bolt 203 is arranged at the intervals of the four arc-shaped heat dissipation holes 15. Through the design of multiple heat dissipation holes and the upper part of the outer cylinder 3 being open, the air convection between the upper and lower surfaces of the base plate can be effectively enhanced, the heat dissipation conditions can be improved, thereby reducing the temperature rise of the reactor during operation and improving the long-term operational reliability.

[0035] The first terminal 801 and the second terminal 802 are made of copper and have excellent conductivity.

[0036] The first terminal 801 and the second terminal 802 are respectively fixed to the outer cylinder 3 by two terminal posts 1. The terminal posts 1 are threaded rod-shaped structures for easy external connection. A limiting ring 101 is provided in the middle of the threaded rod-shaped structure to engage with the first terminal 801 or the second terminal 802 (see...). Figure 7 One end of the terminal 1 passes through the first terminal 801 or the second terminal 802 and the outer cylinder 3 in sequence, and a nut 13 is threadedly connected inside the outer cylinder 3.

[0037] An outer liner 9 is provided between the first terminal 801 or the second terminal 802 and the outer cylinder 3. The side of the outer liner 9 near the outer cylinder 3 is a concave arc surface that fits into the outer cylinder 3, and the side of the outer liner 9 near the first terminal 801 or the second terminal 802 is a flat surface that fits into the first terminal 801 or the second terminal 802.

[0038] An inner liner plate 10 is provided between the nut 13 and the outer cylinder 3. The inner liner plate 10 has a convex arc surface that fits against the outer cylinder 3 on the side closer to the outer cylinder 3, and a flat surface on the side closer to the nut 13.

[0039] The double-layer liner not only serves as structural filling and support, but also effectively prevents internal components from loosening and causing noise and wear, further enhancing the overall mechanical stability, durability, and safety of the product.

[0040] The two ends of the coil 5 are connected to the first terminal 801 and the second terminal 802 respectively through L-shaped copper connectors 11. One end of the connector 11 passes through the outer cylinder 3 and is welded to the first terminal 801 or the second terminal 802, while the other end is welded perpendicular to the inner wall of the outer cylinder 3 to the end of the coil 5. This connection method not only has a short electrical path and reliable contact, but also facilitates the transfer and welding construction between the inner and outer spaces, and ensures low resistance and high reliability of the current path, thus improving the convenience of installation and maintenance.

[0041] The outer liner 9 is made of aluminum. When welding the L-shaped connector 11 and the first terminal 801 or the second terminal 802, the aluminum outer liner 9 quickly dissipates heat into the air. The inner liner 10 is made of epoxy resin.

[0042] like Figure 1 As shown, the assembly process of the resonant reactor of this utility model is as follows: S1: Pre-assembly of coil 5 and positioning card 6 First, place the wound coil 5 horizontally. Take four positioning clips 6, align the arc-shaped limiting grooves 12 on them with the outer circumferential wall of the coil 5, and evenly fit them around the coil 5 to achieve radial positioning of the coil, forming a coil 5-positioning clip 6 assembly.

[0043] S2: The assembly is inserted into the outer cylinder 3 and initially secured. The coil 5-positioning clip 6 assembly from the above steps is inserted axially into the epoxy resin outer cylinder 3. The mounting holes at the bottom of the four positioning clips 6 are aligned with the pre-drilled mounting holes on the inner bottom of the outer cylinder 3. Then, from the outside of the outer cylinder 3, the second insulating bolt 202 is passed through these aligned mounting holes and tightened inside the outer cylinder 3 using an insulating nut 702, thereby initially fixing the coil 5-positioning clip 6 assembly into the internal cavity of the outer cylinder 3.

[0044] S3: Install connector 11 and weld both ends. S3.1: Fixing the outer liner plate: Fit the outer liner plate 9 to the curve of the outer wall of the outer cylinder 3, with pre-drilled holes for the terminal block 1 to pass through. Firmly adhere it to the outer cylinder wall, covering the mounting hole area.

[0045] S3.2: Welding connector 11: From the inside of the outer cylinder 3, the long side of the L-shaped connector 11 is passed sequentially through the opening reserved in the inner liner plate 10, the corresponding opening on the outer cylinder 3, and the opening reserved on the outer liner plate 9. Inside the outer cylinder 3, the short side of the connector 11 is welded to the lead wire of the coil 5 winding. On the outside, the long side of the connector 11 that has been passed through is aligned and welded to the wiring hole on the copper first terminal 801 or the second terminal 802.

[0046] S3.3: Install the inner liner plate 10 and the terminal block 1: Pass the terminal block 1 from its stud end through the mounting hole on the first terminal 801 or the second terminal 802, the corresponding hole on the outer liner plate 9, the hole in the outer cylinder 3, and the hole in the inner liner plate 10 in sequence. Inside the outer cylinder 3, tighten the nut 13 onto the stud, thereby pressing the first terminal 801 or the second terminal 802, the outer liner plate 9, the outer cylinder 3, and the inner liner plate 10 into a single unit.

[0047] S4: Install base plate 4 and final fixation Invert the assembled components so that the open end of the outer cylinder 3 faces downwards. Take the insulating base plate 4 and align its mounting holes with the bottom of the positioning clip 6 and the first threaded hole 701 and second threaded hole 703 on the outer cylinder 3. Use the first insulating bolt 201 and the third insulating bolt 203 to screw them into the through hole at the bottom of the base plate, finally securing all components together. During this process, the circular heat dissipation hole 14 and the arc-shaped heat dissipation hole 15 on the base plate 4, together with the open structure at the top of the outer cylinder 3, form a complete heat dissipation channel.

[0048] At this point, the entire resonant reactor assembly is complete.

[0049] When in use, connect the external circuit to terminal 1 electrically.

Claims

1. A resonant reactor comprising a base plate (4), characterized in that, An outer cylinder (3) is fixed on the base plate (4). A spiral coil (5) is provided in close contact with the inner wall of the outer cylinder (3). The coil (5) is fixed to the inner wall of the outer cylinder (3) by multiple positioning clips (6). The positioning clips (6) are strip-shaped structures with a length greater than the spiral height of the coil (5). Multiple limiting grooves (12) adapted to the coil (5) are opened on the side of the positioning clips (6) facing the coil (5). The coil (5) is housed in the limiting grooves (12). The two ends of the coil (5) pass through the side wall of the outer cylinder (3) and are respectively connected to the first terminal (801) and the second terminal (802).

2. The resonant reactor according to claim 1, characterized in that, The outer cylinder (3) is an epoxy resin insulating cylinder structure. The upper part of the cylinder has an open structure and covers the outside of the coil (5) and the positioning card (6). Multiple first threaded holes (701) are provided on the end face. Each first threaded hole (701) is threadedly connected to the first insulating bolt (201) that penetrates the bottom plate (4) to fix the bottom plate (4) and the outer cylinder (3).

3. The resonant reactor of claim 1, wherein, Each of the positioning cards (6) is fixed to the outer cylinder (3) by multiple second insulating bolts (202). Each second insulating bolt (202) passes through the outer cylinder (3) and the positioning card (6) in sequence and is threaded with an insulating nut (702) to fix the positioning card (6) and the outer cylinder (3).

4. The resonant reactor of claim 1, wherein, Each of the positioning cards (6) has a second threaded hole (703) at one end near the base plate (4), and each second threaded hole (703) is threadedly connected to a third insulating bolt (203) that passes through the base plate (4) to fix the base plate (4) and the positioning card (6).

5. The resonant reactor of claim 4, wherein, The base plate (4) has a circular heat dissipation hole (14), and a plurality of arc-shaped heat dissipation holes (15) are arranged around the circular heat dissipation hole (14) at intervals. The third insulating bolt (203) is arranged at the intervals of the plurality of arc-shaped heat dissipation holes (15).

6. The resonant reactor of claim 1, wherein, The first terminal (801) and the second terminal (802) are made of copper.

7. The resonant reactor of claim 1, wherein, The first terminal (801) and the second terminal (802) are respectively fixed to the outer cylinder (3) by two terminals (1). The terminals (1) are threaded rod-shaped structures. A limiting ring (101) is provided in the middle of the threaded rod-shaped structure to engage with the first terminal (801) or the second terminal (802). One end of the terminal (1) passes through the first terminal (801) or the second terminal (802) and the outer cylinder (3) in sequence. A nut (13) is threadedly connected inside the outer cylinder (3).

8. The resonant reactor of claim 7, wherein, An outer liner plate (9) is provided between the first terminal (801) or the second terminal (802) and the outer cylinder (3). The side of the outer liner plate (9) near the outer cylinder (3) is a concave arc surface that fits against the outer cylinder (3), and the side of the outer liner plate (9) near the first terminal (801) or the second terminal (802) is a flat surface that fits against the first terminal (801) or the second terminal (802). An inner liner plate (10) is provided between the nut (13) and the outer cylinder (3). The inner liner plate (10) has a convex arc surface that fits against the outer cylinder (3) on the side closer to the outer cylinder (3), and a flat surface on the side closer to the nut (13).

9. The resonant reactor of claim 8, wherein, The outer liner (9) is made of aluminum, and the inner liner (10) is made of epoxy resin.

10. The resonant reactor according to claim 1, characterized in that, The two ends of the coil (5) are connected to the first terminal (801) and the second terminal (802) respectively through L-shaped copper connectors (11). One end of the connector (11) passes through the outer cylinder (3) and is fixedly connected to the first terminal (801) or the second terminal (802), while the other end is perpendicular to the inner wall of the outer cylinder (3) and fixedly connected to the end of the coil (5).

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