Hollow series reactor applicable to small space

Abstract

The invention discloses a hollow series reactor capable of being used in a small space, and relates to the technical field of reactors, the hollow series reactor comprises an insulating frame, the upper end of the insulating frame is provided with a shell mechanism for placing the hollow series reactor and performing heat dissipation on the hollow series reactor, and the upper end of the shell mechanism is provided with a sealing cover mechanism matched with the shell mechanism for heat dissipation. The stacked design of the first reactor and the second reactor enables installation to be simpler and more convenient, only one shell mechanism is needed to accommodate a plurality of reactors, the installation time is shortened, and the installation complexity is reduced. Besides, if a certain reactor goes wrong, the reactor can be independently replaced or maintained, the whole reactor unit does not need to be disassembled, the first reactor or the second reactor can be selectively stacked according to actual requirements, even the first reactor and the second reactor are stacked in a mixed mode and then electrically connected in series, the flexibility can be adjusted according to different requirements of an electric power system, and the electric power system is more flexible. And diversified application scenes are satisfied.

Description

Technical Field

[0001] The present invention relates to the technical field of reactors, and particularly relates to a hollow series reactor that can be used in a small space. Background Art

[0002] For example, the patent document disclosed as CN222088368U, with the name of a hollow series reactor with rain erosion prevention, belongs to the technical field of reactors. It includes a base, and also includes: a first rainproof cap fixedly arranged at the top of the series reactor body; a rainproof cover; a fixing plate. A plurality of guide rods are fixedly arranged between the first rainproof cap and the base. The top of the rainproof cover is fixedly connected to the fixing plate, the bottom of the rainproof cover is fixedly provided with a moving plate, and the moving plate is slidably connected to the plurality of guide rods. By installing the rainproof cover inside the first rainproof cap, after use, the rainproof cover can be retracted into the first rainproof cap to avoid being exposed to the sun for a long time, which may cause the rainproof cover to age, become fragile, lose elasticity, or even crack and deform, affecting the rainproof effect. Moreover, dust is not likely to accumulate on the base, and cleaning is also relatively convenient, which helps to improve the user experience.

[0003] For example, the patent document with the publication number CN218730223U, with the name of a hollow series reactor that avoids rain erosion. When encountering heavy rain or rainy weather with strong winds, rain will not enter the series reactor body through the lower part of the rain shield and the side of the series reactor, which will not cause damage to the reactor coil, improve the service life of the series reactor body, and at the same time, when overhauling, the rainproof cover is closed and lowered to facilitate the overhaul by maintenance personnel.

[0004] The above inventions are installed in a three-phase vertical stacking manner. However, when a certain coil is damaged, it cannot be replaced or repaired individually. Moreover, the vertical stacking method adopted by the above inventions has a single application scenario and cannot be converted according to the requirements of the power system. In addition, the installation size is relatively large and is not suitable for use in some sites with limited space for wire collection. Therefore, the present application provides a hollow series reactor that can be used in a small space to meet the requirements. Summary of the Invention

[0005] The purpose of the present application is to provide a hollow series reactor that can be used in a small space, which can effectively solve the problems proposed in the above background art.

[0006] To achieve the above purpose, the present application provides the following technical solution: A hollow series reactor that can be used in a small space, including an insulating frame. An outer shell mechanism for placing and dissipating heat from the hollow series reactor is arranged at the upper end of the insulating frame. A cover mechanism for cooperating with the outer shell mechanism to dissipate heat is arranged at the upper end of the outer shell mechanism. Inside the outer shell mechanism, there are a first reactor formed by combining a plurality of coils in a circular array and a second reactor formed by sleeving a plurality of coils.

[0007] The first reactor and the second reactor can be stacked and connected in series through connecting wires and placed inside the housing mechanism, and each of the first reactor and the second reactor can be individually stacked and connected in series through connecting wires and placed inside the housing mechanism.

[0008] Wherein, the housing mechanism includes an insulating base installed at the upper end of an insulating frame, a middle part of the upper end of the insulating base is provided with an insulating disc, a plurality of flow channels distributed in an annular array are formed at the lower end of the insulating disc, and a plurality of exhaust holes are formed at the upper end of the insulating disc;

[0009] A positioning tube is provided in the middle of the upper end of the insulating disc, and a plurality of hole grooves distributed in an annular array are formed on the outer surface of the positioning tube.

[0010] Wherein, a housing is provided at the upper end of the insulating base, a plurality of heat dissipation fins distributed in an annular array are provided on the inner wall of the housing, and a plurality of ventilation holes distributed in an annular array are formed at the lower part of the outer surface of the housing.

[0011] Wherein, the cover mechanism includes a sleeve and a top cover. A sleeve is sleeved on the upper part of the outer surface of the housing, a plurality of air-dissipating cyclone blades distributed in an annular array are provided at the bottom of the top cover, a support tube is provided in the middle of the bottom of the top cover, the support tube is sleeved on the upper part of the outer surface of the positioning tube, and the sleeve is fixedly installed at the lower end of the air-dissipating cyclone blades.

[0012] Wherein, the first reactor includes an insulating shell, a plurality of ventilation grooves distributed in an annular array are formed on the outer surface and the inner wall of the insulating shell, and a bottom ring is provided at the lower end of the insulating shell.

[0013] Wherein, the first reactor includes a plurality of winding frames located inside the insulating shell and distributed in an annular array. Arc-shaped coil windings are provided on the outer surfaces of the plurality of winding frames, heat dissipation tubes are provided inside the plurality of winding frames, and temperature-discharging partition tubes are provided between the plurality of heat dissipation tubes.

[0014] Wherein, the plurality of heat dissipation tubes are combined into a ring shape, and the interiors of the heat dissipation tubes and the temperature-discharging partition tubes are the same. The heat dissipation tubes are located between every two winding frames, and the insulating shell is sleeved on the outer surface of the positioning tube.

[0015] Wherein, the second reactor includes an insulating sleeve, the insulating sleeve is composed of an inner ring and an outer ring, an inner frame is provided on the inner wall of the inner ring of the insulating sleeve, the inner frame is sleeved on the outer surface of the positioning tube, and a wire port is provided on the outer wall of the outer ring of the insulating sleeve.

[0016] Among them, a plurality of horizontally wound coils formed by sleeving are arranged between the inner ring and the outer ring of the insulating sleeve, and insulating partition frames for separating the horizontally wound coils to accelerate heat dissipation are arranged between the plurality of horizontally wound coils.

[0017] Among them, a bottom air ring piece is arranged on the bottom wall of the insulating sleeve, an outer hole ring is arranged on the outer diameter of the upper end of the bottom air ring piece, a top air ring piece is arranged on the upper end of the insulating sleeve, an inner hole ring is arranged on the inner diameter of the lower end of the top air ring piece, and support heat dissipation frames are arranged on the lower end of the top air ring piece and the upper end of the bottom air ring piece.

[0018] The present invention also provides a method for using a hollow series reactor that can be used in a small space:

[0019] During use, stack the first reactor inside the outer shell mechanism reactor or stack the second reactor inside the outer shell mechanism reactor, or mix and stack the first reactor and the second reactor inside the outer shell mechanism reactor, and finally connect them in series electrically. The cooperation between the provided outer shell mechanism reactor and the cover mechanism reactor can dissipate heat from the stacked first reactor and second reactor.

[0020] The stacked design of the first reactor and the second reactor makes the installation more convenient. Only one outer shell mechanism reactor is needed to accommodate multiple reactors, reducing the installation time and complexity. In addition, if a certain reactor has a problem, it can be replaced or repaired individually without disassembling the entire reactor unit.

[0021] The cooperation design between the outer shell mechanism reactor and the cover mechanism reactor can effectively dissipate heat from the stacked first reactor and second reactor. It ensures the rationality of the air circulation path, improves the cooling efficiency, prevents the aging and performance degradation of insulating materials caused by overheating, and a fan or other cooling devices can be arranged in the outer shell mechanism reactor to achieve forced air cooling, or natural ventilation can be relied on to reduce energy consumption. Even when the first reactor and the second reactor are in a stacked state, an appropriate phase distance can still be ensured, thereby reducing the electromagnetic coupling between phases, reducing the mutual inductance effect, and improving the stability and reliability of the reactor.

[0022] The outer shell mechanism reactor and the cover mechanism reactor can be used as part of electromagnetic shielding to reduce external electromagnetic interference, and at the same time limit the electromagnetic radiation of the reactor to the outside world, improving the electromagnetic compatibility of the system. Moreover, the first reactor or the second reactor can be selected for stacking according to actual needs, or even the two can be mixed and stacked, and then connected in series electrically. This flexibility can be adjusted according to different requirements of the power system to meet diverse application scenarios.

[0023] In summary, the technical effects and advantages of the present invention are as follows:

[0024] 1. In the present invention, the stacked design of the first reactor and the second reactor makes the installation more convenient. Only one housing mechanism is needed to accommodate multiple reactors, reducing the installation time and complexity. In addition, if a certain reactor has a problem, it can be replaced or repaired individually without disassembling the entire reactor unit. Moreover, the first reactor or the second reactor can be selected for stacking according to actual needs, or even the two can be mixed and stacked, and then electrically connected in series. This flexibility can be adjusted according to different requirements of the power system to meet diverse application scenarios.

[0025] 2. In the present invention, since each arc ring coil is separated into independent circular ring units and a certain distance is maintained between each unit, the electromagnetic coupling between phases is effectively reduced, and the mutual inductance effect is lowered. The circular ring arrangement design of the heat dissipation tubes and the exhaust temperature isolation tubes greatly increases the space for air circulation, making the natural cooling or forced air cooling effect better. Air can enter the interior of the exhaust temperature isolation tube through the ventilation slots and then flow into the heat dissipation tubes to form an effective cooling path. Good heat dissipation conditions can prevent the aging and performance degradation of the insulating material caused by overheating, thereby prolonging the overall service life of the reactor. The design of the winding frame and the arc ring coil unit type winding can reduce the size and weight of a single coil without sacrificing electrical performance, which is particularly beneficial for applications that require a compact installation space, such as urban substations, offshore platforms and other restricted environments. The adoption of a combination of multiple independent arc ring coils and winding frames simplifies the manufacturing process. When a certain coil has a problem, it can be repaired or replaced individually without disassembling the entire reactor device.

[0026] 3. In the present invention, the insulating spacer and the supporting heat dissipation frame are used to separate the spacing between multiple horizontally wound coils sleeved together, increasing the distance between each coil, thereby reducing the electromagnetic coupling between phases and lowering the mutual inductance effect, making the operation of each phase reactor more independent and improving the stability and reliability of the reactor. Air first enters the interior of the insulating sleeve through the outer hole ring, then flows upward in the insulating sleeve, and finally exits through the inner hole ring. This design forms an effective cooling path to help quickly remove the heat generated during the use of the horizontally wound coils. The insulating spacer not only plays a supporting role but also can accelerate the heat dissipation of the horizontally wound coils, ensuring good heat conduction and air circulation conditions, preventing the aging and performance degradation of the insulating material caused by overheating, and prolonging the service life of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a sectional view of the three-dimensional structure of a hollow series reactor;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of a hollow series reactor;

[0030] Figure 3 It is a sectional view of the three-dimensional connection structure of the housing mechanism;

[0031] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the housing mechanism;

[0032] Figure 5 It is a schematic diagram of the partial three-dimensional connection structure of the housing mechanism;

[0033] Figure 6 It is a schematic diagram of the three-dimensional connection structure of the capping mechanism;

[0034] Figure 7 It is a schematic diagram of the three-dimensional connection structure of the first reactor;

[0035] Figure 8 It is an exploded view of the three-dimensional connection structure of the first reactor;

[0036] Figure 9 It is a schematic diagram of the three-dimensional connection structure of the heat dissipation pipe and the temperature discharge partition pipe;

[0037] Figure 10 It is a schematic diagram of the three-dimensional connection structure of the arc ring coil and the winding frame;

[0038] Figure 11 It is a schematic diagram of the three-dimensional connection structure of the second reactor;

[0039] Figure 12 It is a sectional view of the three-dimensional connection structure of the second reactor from the first perspective;

[0040] Figure 13 It is a sectional view of the three-dimensional connection structure of the second reactor from the second perspective;

[0041] Figure 14 It is a sectional view of the partial three-dimensional connection structure of the second reactor;

[0042] Figure 15 It is a schematic diagram of the internal gas flow of the second reactor;

[0043] Figure 16 Schematic diagram of the three-dimensional connection structure for supporting the heat dissipation rack.

[0044] In the figure: 1. Capping mechanism; 11. Top cover; 12. Support tube; 13. Air-dissipating cyclone blade; 14. Sleeve; 2. Outer shell mechanism; 21. Outer shell; 22. Insulating base; 23. Vent hole; 24. Insulating disc; 25. Flow-through groove; 26. Exhaust hole; 27. Positioning tube; 28. Hole groove; 29. Heat dissipation fin; 3. Insulating rack; 4. First reactor; 41. Insulating shell; 42. Venting groove; 43. Bottom ring; 44. Arc ring coil; 45. Winding rack; 46. Temperature-discharging partition tube; 47. Heat dissipation tube; 5. Second reactor; 51. Wire port; 52. Insulating sleeve; 53. Bottom air ring piece; 54. Top air ring piece; 55. Inner rack; 57. Horizontally wound coil; 58. Insulating partition rack; 59. Support heat dissipation rack; 511. Outer hole ring; 512. Inner hole ring. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1. Refer to Figures 1 to 16 A kind of hollow series reactor applicable to small spaces, which includes an insulating rack 3. At the upper end of the insulating rack 3, there is an outer shell mechanism 2 for placing and dissipating heat from the hollow series reactor. At the upper end of the outer shell mechanism 2, there is a capping mechanism 1 for cooperating with the outer shell mechanism 2 to dissipate heat. Inside the outer shell mechanism 2, there are a first reactor 4 composed of multiple groups of coils in an annular array combination and a second reactor 5 composed of multiple groups of coils sleeved;

[0047] The first reactor 4 and the second reactor 5 can be stacked and connected in series through connecting wires and placed inside the outer shell mechanism 2. Both the first reactor 4 and the second reactor 5 can be individually stacked and connected in series through connecting wires and placed inside the outer shell mechanism 2.

[0048] It is worth noting that during use, the first reactor 4 can be stacked inside the outer shell mechanism 2, or the second reactor 5 can be stacked inside the outer shell mechanism 2, or the first reactor 4 and the second reactor 5 can be mixed and stacked inside the outer shell mechanism 2. Finally, they can be connected in series electrically. The provided outer shell mechanism 2 and the capping mechanism 1 can cooperate to dissipate heat from the stacked first reactor 4 and second reactor 5.

[0049] Among them, the stacked design of the first reactor 4 and the second reactor 5 makes the installation more convenient. Only one housing mechanism 2 is needed to accommodate multiple reactors, reducing the installation time and complexity. In addition, if a certain reactor has a problem, it can be replaced or repaired individually without disassembling the entire reactor unit.

[0050] The housing mechanism 2 and the cover mechanism 1 are designed in cooperation to effectively dissipate heat from the stacked first reactor 4 and second reactor 5. It ensures the rationality of the air circulation path, improves the cooling efficiency, prevents the aging of insulating materials and the decline of performance caused by overheating, and a fan or other cooling devices can be set in the housing mechanism 2 to achieve forced air cooling, or natural ventilation can be relied on to reduce energy consumption.

[0051] Even when the first reactor 4 and the second reactor 5 are in a stacked state, an appropriate phase-to-phase distance can still be ensured, thereby reducing the electromagnetic coupling between phases, reducing the mutual inductance effect, and improving the stability and reliability of the reactor.

[0052] The housing mechanism 2 provides mechanical support to ensure that all stacked reactors remain in fixed positions, enhancing the mechanical strength of the overall structure and enabling it to better withstand vibrations during transportation and mechanical stresses during operation.

[0053] The housing mechanism 2 and the cover mechanism 1 can be part of electromagnetic shielding to reduce external electromagnetic interference, and at the same time limit the electromagnetic radiation of the reactor to the outside world, enhancing the electromagnetic compatibility of the system. Moreover, the first reactor 4 or the second reactor 5 can be selected for stacking according to actual needs, or even the two can be stacked mixedly, and then electrically connected in series. This flexibility can be adjusted according to different requirements of the power system to meet diverse application scenarios.

[0054] Embodiment 2: Based on the housing mechanism 2 and the cover mechanism 1 proposed in Embodiment 1, this embodiment provides further technical solutions for the housing mechanism 2 and the cover mechanism 1.

[0055] Among them, the housing mechanism 2 includes an insulating base 22 installed at the upper end of the insulating frame 3. In the middle of the upper end of the insulating base 22, there is an insulating disc 24. A plurality of flow channels 25 distributed in an annular array are opened at the lower end of the insulating disc 24, and a plurality of exhaust holes 26 are opened at the upper end of the insulating disc 24;

[0056] In the middle of the upper end of the insulating disc 24, there is a positioning tube 27. A plurality of hole grooves 28 distributed in an annular array are opened on the outer surface of the positioning tube 27, and the provided positioning tube 27 is made of insulating material.

[0057] The upper end of the insulating base 22 is provided with a housing 21. The inner wall of the housing 21 is provided with a number of heat dissipation fins 29 distributed in an annular array. A number of ventilation holes 23 distributed in an annular array are provided below the outer surface of the housing 21.

[0058] It should be noted that both the first reactor 4 and the second reactor 5 are installed on the surface of the positioning tube 27, and the provided insulating disc 24 is located in the upper part of the insulating base 22 for placing the first reactor 4 or the second reactor 5. When dissipating heat from the first reactor 4 or the second reactor 5, air will enter the interior of the housing 21 through the ventilation holes 23, and the air entering the interior of the housing 21 will enter the interior of the insulating disc 24 through the flow groove 25 and then be discharged through the exhaust holes 26. The provided insulating disc 24 is used to insulate the bottom of the first reactor 4 or the second reactor 5. When heat is generated during the use of the first reactor 4 and the second reactor 5, the heat will be transferred to the surface of the housing 21 through the heat dissipation fins 29, and since hot air flows upward, when the air entering the interior of the housing 21 through the ventilation holes 23 replenishes the interior of the housing 21, the flowing air will carry away the heat on the surface of the heat dissipation fins 29.

[0059] The capping mechanism 1 includes a sleeve 14 and a top cover 11. The sleeve 14 is sleeved on the upper part of the outer surface of the housing 21. A number of air-dispersing cyclone blades 13 distributed in an annular array are provided at the bottom of the top cover 11. A support tube 12 is provided in the middle of the bottom of the top cover 11. The support tube 12 is sleeved on the upper part of the outer surface of the positioning tube 27, and the sleeve 14 is fixedly installed at the lower end of the air-dispersing cyclone blades 13.

[0060] It should be noted that when air enters the interior of the housing 21, the air will be discharged through the guidance of the support tube 12, and the provided top cover 11 is used to block wind and rain, and the provided air-dispersing cyclone blades 13 will guide the hot air to be discharged through the top cover 11, enabling the air inside the housing 21 to circulate.

[0061] Among them, air enters the interior of the housing 21 through the ventilation holes 23, reaches the interior of the insulating disc 24 through the flow groove 25, and is finally discharged through the exhaust holes 26, ensuring that air can flow smoothly through the entire reactor and carry away the heat generated during the operation of the reactor.

[0062] Since hot air naturally rises, after the cold air entering through the ventilation holes 23 replenishes the interior of the housing 21, the flowing air will carry away the heat on the surface of the heat dissipation fins 29, forming an effective natural convection cycle. The support tube 12 guides the air flow to ensure that the air can be evenly distributed and effectively carry away the heat. The air-dispersing cyclone blades 13 on the top cover 11 further promote the discharge of hot air and enhance the heat dissipation efficiency.

[0063] The insulating disc 24 is located above the insulating base 22 and is used to place the first reactor 4 or the second reactor 5. It plays a role in heat insulation, reducing the possibility of heat conduction downward to the base, protecting the equipment below from high temperatures. The positioning tube 27 provides stable mechanical support, ensuring that the reactor remains in a fixed position during installation and operation, and enhancing the mechanical strength of the overall structure.

[0064] The outer shell 21 can be part of the electromagnetic shielding, reducing external electromagnetic interference. At the same time, it also limits the electromagnetic radiation of the reactor to the outside world, improving the electromagnetic compatibility of the system. Through reasonable layout and integrated design, efficient heat dissipation and stable operation can be achieved in a limited space, which is particularly suitable for space-constrained environments such as urban substations and offshore platforms.

[0065] Example 3. Regarding the first reactor 4 proposed in Example 1, this example provides a further technical solution for the first reactor 4.

[0066] The first reactor 4 includes an insulating shell 41. A number of ventilation grooves 42 distributed in an annular array are provided on both the outer surface and the inner wall of the insulating shell 41. A bottom ring 43 is provided at the lower end of the insulating shell 41.

[0067] The first reactor 4 includes a number of winding frames 45 located inside the insulating shell 41 and distributed in an annular array. Arc-shaped ring coils 44 are wound around the outer surfaces of the number of winding frames 45. Heat dissipation tubes 47 are provided inside the number of winding frames 45. Exhaust temperature separation tubes 46 are provided between the number of heat dissipation tubes 47.

[0068] It should be noted that the arc-shaped ring coils 44 are wound around the outer surfaces of the winding frames 45. When a number of the winding frames 45 are spliced and connected in series by wires, they are combined into a circular ring shape, thus forming a hollow series reactor. This reactor is formed by combining a number of individual arc-shaped ring coils 44. When the coils of the original reactor are divided into multiple independent circular ring-shaped units composed of arc-shaped ring coils 44 and winding frames 45, the distance between each unit increases, thereby reducing the interphase coupling effect.

[0069] A number of heat dissipation tubes 47 are combined into a ring shape, and the interiors of the heat dissipation tubes 47 and the exhaust temperature separation tubes 46 are the same. The heat dissipation tubes 47 are located between every two winding frames 45. The insulating shell 41 is sleeved on the outer surface of the positioning tube 27.

[0070] Among them, when multiple winding frames 45 are spliced together, the arranged heat dissipation tubes 47 are located inside the winding frames 45, and the arranged temperature discharge partition tubes 46 are located between two winding frames 45. Air can enter the interior of the temperature discharge partition tubes 46 through the ventilation slots 42, and then the air enters the interior of the heat dissipation tubes 47 through the temperature discharge partition tubes 46. The cooperation of the heat dissipation tubes 47 and the temperature discharge partition tubes 46 is used to dissipate heat from the arc ring coil 44. Moreover, the circular arrangement of the heat dissipation tubes 47 and the temperature discharge partition tubes 46 increases the space for air circulation, which is beneficial to natural cooling or forced air cooling. Better heat dissipation conditions can prevent the aging of insulating materials and the decline of performance caused by overheating, extend the service life of the reactor, and the designed arc ring coil 44 and winding frame 45 as a unit type winding can reduce the size and weight of a single coil without sacrificing electrical performance, which is particularly advantageous for applications that require a compact installation space, such as in restricted environments like urban substations and offshore platforms.

[0071] Among them, since each arc ring coil 44 is separated into independent circular ring units, and a certain distance is maintained between each unit, the electromagnetic coupling between phases is effectively reduced, and the mutual inductance effect is decreased. The circular arrangement design of the heat dissipation tubes 47 and the temperature discharge partition tubes 46 greatly increases the space for air circulation, making the effect of natural cooling or forced air cooling better. Air can enter the interior of the temperature discharge partition tubes 46 through the ventilation slots 42 and then flow into the heat dissipation tubes 47 to form an effective cooling path. Good heat dissipation conditions can prevent the aging of insulating materials and the decline of performance caused by overheating, thereby extending the overall service life of the reactor.

[0072] The designed winding frame 45 and arc ring coil 44 as a unit type winding can reduce the size and weight of a single coil without sacrificing electrical performance, which is particularly advantageous for applications that require a compact installation space, such as in restricted environments like urban substations and offshore platforms.

[0073] Adopting the method of combining multiple independent arc ring coils 44 and winding frames 45 simplifies the manufacturing process. When a problem occurs in a certain coil, it can be repaired or replaced separately without the need to disassemble the entire reactor device.

[0074] Embodiment 4. For the second reactor 5 proposed according to Embodiment 1, this embodiment provides a further technical solution for the second reactor 5.

[0075] The second reactor 5 includes an insulating sleeve 52. The insulating sleeve 52 is composed of an inner ring and an outer ring. An inner frame 55 is arranged on the inner wall of the inner ring of the insulating sleeve 52. The inner frame 55 is sleeved on the outer surface of the positioning tube 27. A wire port 51 is arranged on the outer wall of the outer ring of the insulating sleeve 52.

[0076] A plurality of transverse coils 57 are arranged between the inner ring and the outer ring of the insulating sleeve 52 , and insulating spacers 58 are arranged between the plurality of transverse coils 57 to separate the transverse coils 57 and accelerate heat dissipation.

[0077] It is worth mentioning that during installation, multiple horizontal winding coils 57 are nested together and their shapes are supported by insulating spacers 58, and then the first inductor 4 or the second inductor 5 is electrically connected through the wire opening 51. The set insulating spacers 58 can accelerate the heat dissipation of the horizontal winding coils 57, and the insulating spacers 58 are used to separate the distances between multiple horizontal winding coils 57 nested together, allowing air to circulate through the insulating spacers 58.

[0078] A bottom air ring piece 53 is provided on the bottom wall of the insulating sleeve 52, an outer hole ring 511 is provided on the upper outer diameter of the bottom air ring piece 53, a top air ring piece 54 is provided on the upper end of the insulating sleeve 52, an inner hole ring 512 is provided on the lower inner diameter of the top air ring piece 54, and a supporting heat dissipation frame 59 is provided on the lower end of the top air ring piece 54 and the upper end of the bottom air ring piece 53.

[0079] Among them, when the horizontal winding coil 57 is in use, the air first enters the interior of the insulating sleeve 52 through the outer hole ring 511, and the supporting heat dissipation frame 59 is used to insulate the horizontal winding coil 57 and increase the spacing between the stacked second inductor 5 or the first inductor 4, thereby reducing the phase coupling effect and reducing the phase mutual inductance, so that the operation of each phase reactor is more independent. After entering the interior of the insulating sleeve 52, the air will flow upward through every other horizontal winding coil 57, and then be discharged through the inner hole ring 512, so that the air circulates inside the insulating sleeve 52 to take away the heat energy generated when the horizontal winding coil 57 is in use, and the insulating sleeve 52 is installed on the outer surface of the positioning tube 27 through the inner frame 55.

[0080] Among them, the insulating spacer 58 and the supporting heat dissipation frame 59 are used to separate the spacing between multiple horizontally wound coils 57 that are nested together, increasing the distance between each coil, thereby reducing the electromagnetic coupling between phases, reducing the mutual inductance effect, making the operation of each phase reactor more independent, and improving the stability and reliability of the reactor.

[0081] The air first enters the interior of the insulating sleeve 52 through the outer hole ring 511, then circulates upward in the insulating sleeve 52, and is finally discharged through the inner hole ring 512. This design forms an effective cooling path to help quickly remove the heat generated by the transverse winding coil 57 when it is in use. The insulating spacer 58 not only plays a supporting role, but also accelerates the heat dissipation of the transverse winding coil 57, ensuring good heat conduction and air circulation conditions, preventing aging and performance degradation of the insulating material due to overheating, and extending the service life of the reactor.

[0082] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hollow series reactor applicable to small spaces, comprising an insulating frame (3), characterized in that: The upper end of the insulating frame (3) is provided with a housing mechanism (2) for placing and dissipating heat from the hollow series reactor, and the upper end of the housing mechanism (2) is provided with a cover mechanism (1) for cooperating with the housing mechanism (2) to dissipate heat. Inside the housing mechanism (2), there are a first reactor (4) composed of multiple groups of coils in an annular array combination and a second reactor (5) composed of multiple groups of coils sleeved together. The first reactor (4) and the second reactor (5) can be stacked and connected in series through connecting wires and placed inside the housing mechanism (2), and both the first reactor (4) and the second reactor (5) can be individually stacked and connected in series through connecting wires and placed inside the housing mechanism (2).

2. The hollow series reactor capable of being applied to small spaces according to claim 1, wherein: The housing mechanism (2) includes an insulating base (22) installed at the upper end of the insulating frame (3). In the middle of the upper end of the insulating base (22), there is an insulating disc (24). Several flow channels (25) distributed in an annular array are opened at the lower end of the insulating disc (24), and several exhaust holes (26) are opened at the upper end of the insulating disc (24). In the middle of the upper end of the insulating disc (24), there is a positioning tube (27), and several hole grooves (28) distributed in an annular array are opened on the outer surface of the positioning tube (27).

3. The hollow series reactor capable of being applied to small spaces according to claim 2, wherein: The upper end of the insulating base (22) is provided with a housing (21). Several heat dissipation fins (29) distributed in an annular array are arranged on the inner wall of the housing (21), and several ventilation holes (23) distributed in an annular array are opened at the lower part of the outer surface of the housing (21).

4. A hollow series reactor capable of being used in a small space according to claim 1, characterized in that: The cover mechanism (1) includes a sleeve (14) and a top cover (11). The sleeve (14) is sleeved on the upper part of the outer surface of the housing (21). Several air-dissipating cyclone blades (13) distributed in an annular array are arranged at the bottom of the top cover (11). In the middle of the bottom of the top cover (11), there is a support tube (12), and the support tube (12) is sleeved on the upper part of the outer surface of the positioning tube (27). The sleeve (14) is fixedly installed at the lower end of the air-dissipating cyclone blades (13).

5. The hollow series reactor capable of being applied to small spaces according to claim 1, wherein: The first reactor (4) includes an insulating shell (41). Several ventilation grooves (42) distributed in an annular array are opened on both the outer surface and the inner wall of the insulating shell (41). The lower end of the insulating shell (41) is provided with a bottom ring (43).

6. The hollow series reactor capable of being applied to small spaces according to claim 5, characterized in that: The first reactor (4) includes several winding frames (45) located inside the insulating shell (41) and distributed in an annular array. Arc-shaped coil (44) is wound around the outer surface of each of the several winding frames (45). Heat dissipation tubes (47) are arranged inside each of the several winding frames (45), and temperature-discharging partition tubes (46) are arranged between each of the several heat dissipation tubes (47).

7. An air-core series reactor applicable to small spaces according to claim 6, characterized in that: The several heat dissipation tubes (47) are combined into a ring shape, and the interiors of the heat dissipation tubes (47) and the temperature-discharging partition tubes (46) are the same. The heat dissipation tubes (47) are located between every two winding frames (45), and the insulating shell (41) is sleeved on the outer surface of the positioning tube (27).

8. A hollow series reactor capable of being applied to small spaces according to claim 1, characterized in that: The second reactor (5) includes an insulating sleeve (52), which is composed of an inner ring and an outer ring. An inner frame (55) is provided on the inner wall of the inner ring of the insulating sleeve (52). The inner frame (55) is sleeved on the outer surface of the positioning tube (27). A wire port (51) is provided on the outer wall of the outer ring of the insulating sleeve (52).

9. A hollow series reactor capable of being used in a small space according to claim 8, characterized in that: A plurality of horizontally wound coils (57) formed by sleeving are arranged between the inner ring and the outer ring of the insulating sleeve (52). An insulating partition frame (58) for separating the horizontally wound coils (57) to accelerate heat dissipation is arranged between the plurality of horizontally wound coils (57).

10. A hollow series reactor capable of being used in a small space according to claim 9, characterized in that: A bottom air ring piece (53) is provided on the bottom wall of the insulating sleeve (52). An outer hole ring (511) is provided on the outer diameter of the upper end of the bottom air ring piece (53). A top air ring piece (54) is provided at the upper end of the insulating sleeve (52). An inner hole ring (512) is provided on the inner diameter of the lower end of the top air ring piece (54). Support heat dissipation frames (59) are provided at the lower end of the top air ring piece (54) and the upper end of the bottom air ring piece (53).

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