A DC air-core reactor

Abstract

The application discloses a DC air-core reactor, and particularly relates to the technical field of power equipment. The DC air-core reactor comprises a reactor body, the reactor body is formed by sequentially stacking a plurality of coil layers, and a plurality of supporting conditions are uniformly distributed between the plurality of coil layers. The design of the annular cavity can effectively shield, avoid the problem that the temperature rise of the foreign matter falling into the heat dissipation air duct is too large, and can introduce cooling air into the annular cavity to guarantee the cooling demand of the reactor body. By controlling the introduction of the cooling air pressure of the cooling fan, the sealing ring is forced to switch, the top of the reactor body is sealed, the moving part reciprocates up and down in the heat dissipation air duct, and the dust remaining on the surface of the coil layer is removed. Due to the increase of the cooling air and the blocking of the top of the heat dissipation air duct, the removed impurities are discharged from the bottom of the reactor body, and the impurities are prevented from flying.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a DC air-core reactor. Background Technology

[0002] Air-core reactors are inductive high-voltage electrical appliances used in power systems for limiting short-circuit current, reactive power compensation, and phase shifting. They are called air-core reactors because their magnetic flux forms a circuit through the air.

[0003] Air-core reactors are mainly composed of three parts: structural components, post insulators, and coils. The coils are usually made of multiple single-wire aluminum wires wound together, and the outside is surrounded by epoxy glass fiber impregnated with a special material to ensure external insulation and isolation from the external environment. In order to achieve the normal and safe operation of air-core reactors, their structure also pays special attention to heat dissipation. The coils are made into several encapsulations connected in parallel inside and outside, and each encapsulation is separated by glass fiber ventilation channel support bars to form heat dissipation channels, thereby completing the stable operation of the reactor.

[0004] Referring to the hollow reactor disclosed in patent publication number CN108335875B, the hollow reactor clamps the winding device through a clamping device, making the overall structure of the product compact, small in size, stable, and easy to operate. The winding device and clamping device are supported and fixed by the horizontal bottom beam, the vertical bottom beam and the support block of the base. While ensuring the stability of the hollow reactor, the structure is further simplified, the design difficulty is reduced and the cost is lowered.

[0005] Currently, reactors all use their own heat dissipation channels to dissipate heat. For example, the air-core reactor mentioned above also uses the space formed by the support bars and the coil to dissipate heat. However, due to the interference of environmental factors in the reactor's operation, relying solely on the heat dissipation channels cannot meet the cooling requirements of the air-core reactor. At the same time, since the heat dissipation channels are in an open state, external impurities and foreign objects can easily fall into the heat dissipation channels. After the impurities and foreign objects accumulate, the flow of heat dissipation channels will be obstructed, and the heat dissipation effect of the coil in the impurity accumulation area will be significantly reduced, resulting in excessive local temperature rise of the coil, which poses a significant safety hazard and is very likely to cause a safety accident. Summary of the Invention

[0006] The purpose of this invention is to provide a DC air-core reactor to solve the above-mentioned technical problems.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to a DC air-core reactor, comprising a reactor body, which is composed of multiple coil layers stacked sequentially. Multiple support structures are evenly distributed between the coil layers, forming multiple heat dissipation channels on the coil layers. Reinforcing frames are installed at the top and bottom of the coil layers. The reactor also includes:

[0009] Multiple annular cavities are distributed on the top of the reactor body. A first annular air duct is set at the bottom of the annular cavity, and a second annular air duct is set at the top of the annular cavity, which is interconnected with the first annular air duct. Multiple interconnecting paths are arranged in a circular array between the first annular air duct and the second annular air duct.

[0010] Multiple sealing rings are slidably disposed in multiple annular cavities. Under normal conditions, the sealing rings are separated from the top of the reactor body. The sealing rings are divided into pressure rings, air rings and plugging rings. The air ring is integrally disposed on the top of the pressure ring. An annular air zone is opened on the top of the air ring. The plugging ring is disposed on the air ring by a bracket, and the plugging ring and the annular air zone are staggered. Multiple reinforcing units are arranged in a circular array at the bottom of each sealing ring.

[0011] The cooling fan is mounted on the reinforcing frame via a bracket, and the cooling fan is connected to the top of multiple annular cavities through pipes to complete the cooling airflow delivery.

[0012] Furthermore, it also includes:

[0013] Multiple sliding rods are arranged in a circular array on the top of the blocking ring. Each sliding rod slides through the annular cavity and a retaining ring is installed on the top of each sliding rod.

[0014] Multiple return springs are fitted onto the outside of multiple sliding rods, and each return spring is positioned between the annular cavity and the retaining ring.

[0015] Furthermore, each reinforcing unit includes:

[0016] Multiple normally open pipes are arranged in a circular array at the bottom of the pressure ring and are interconnected with the annular air zone. The multiple normally open pipes are respectively configured to cooperate with multiple heat dissipation air ducts.

[0017] Multiple pressurization pipes are arranged in a circular array at the bottom of the pressure ring and located on one side of the normally open pipe, and all of the pressurization pipes are interconnected with the annular air zone;

[0018] Multiple dynamic plugs are arranged in a circular array at the top of the annular cavity, and the bottom of each dynamic plug extends to the top of multiple pressurized pipes.

[0019] Furthermore, it also includes multiple reciprocating lead screws, each of which is rotatably mounted in the heat dissipation duct via a bracket. A heat dissipation cavity is opened in the center of the reciprocating lead screw, and the top of the heat dissipation cavity is slidably and sealed to the normally open pipe. Multiple air holes that communicate with the heat dissipation cavity are opened through the reciprocating lead screw from top to bottom.

[0020] Furthermore, a drive gear ring is fixedly sleeved on the top of the reciprocating lead screw, and a drive component that meshes with the drive gear ring is installed in the heat dissipation duct via a bracket. A lead screw nut is sleeved on the outside of the reciprocating lead screw, and a moving component connected to the lead screw nut is slidably arranged in the heat dissipation duct.

[0021] Furthermore, the drive unit includes a drive chamber, which is mounted in the heat dissipation duct via a bracket. The drive chamber has a rotating area, in which a rotating impeller is rotatably mounted. A sealing disc is mounted on the rotating impeller and makes rotatable sealing contact with the top of the rotating area. A drive gear that meshes and drives the drive gear ring is fixedly mounted on the sealing disc. An air inlet pipe is connected to one side of the drive chamber and is connected to a pressurization pipe via a flexible hose. An air outlet pipe is connected to the drive chamber on the side of the air inlet pipe.

[0022] Furthermore, the moving part includes a contour frame, which is connected to a lead screw nut, and both ends of the contour frame slide in contact with the side wall of the support condition. A reserved gap is provided between the two sides of the contour frame and the coil layer.

[0023] Furthermore, rollers that contact the coil layer are rotatably mounted at the four corners of the bottom of the contour frame via brackets. Multiple rollers compensate for the reserved gap between the contour frame and the coil layer. Cleaning strips are installed on the reserved gaps on both sides of the contour frame.

[0024] Furthermore, a lifting ring cavity is sleeved outside the reciprocating screw, and multiple air vents are arranged in a circular array on the inner wall of the lifting ring cavity. The air vents are configured in conjunction with the air holes. Two guide sleeves that communicate with the lifting ring cavity are symmetrically installed on both sides of the lifting ring cavity. A sliding rod is slidably installed inside the guide sleeve, and a wedge-shaped platform is installed at the front end of the sliding rod.

[0025] Furthermore, two assembly tables are symmetrically installed on both sides of the top of the contour frame. The two assembly tables are connected to two guide sleeves respectively. Control rods are slidably installed on both assembly tables. A second wedge platform that cooperates with the first wedge platform is installed on the top of each control rod. A tapping plate is installed at the bottom of each control rod. A control spring is sleeved on the outside of each control rod.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This invention adds annular cavities to the top of the heat dissipation ducts at the top of multiple coil layers. The annular cavity design effectively shields the ducts from foreign objects falling into them, preventing excessive temperature rise. At the same time, it ensures the natural ventilation effect of the heat dissipation ducts. The cooling fan design introduces cooling airflow into the annular cavity and evenly distributes it to multiple heat dissipation ducts to complete the cooling action, ensuring the cooling requirements of the reactor body and preventing safety accidents caused by excessive temperature.

[0028] This invention incorporates a movable component that controls the pressure of the cooling airflow introduced by the cooling fan, forcing the sealing ring to switch. This seals the top of the reactor body while diverting the gas into the drive component, causing the movable component to move up and down within the heat dissipation duct. This removes residual dust from the surface of the coil layer. Simultaneously, the increased cooling airflow and the blockage at the top of the heat dissipation duct allow the removed impurities to be discharged through the bottom of the reactor body, preventing them from flying away.

[0029] This invention features a lifting ring cavity on the reciprocating screw. Multiple air vents are located on the inner wall of the lifting ring cavity. When the vents connect with the air holes, gas enters the guide sleeve through the lifting ring cavity, pushing the sliding rod and the first wedge platform forward. This pushes the second wedge platform, causing the control rod and the striking plate to move downwards and strike the cleaning strip once. Afterward, the gas is released and the striking plate resets, thus completing the intermittent striking process and preventing impurities from accumulating on the cleaning strip and affecting the cleaning process.

[0030] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0031] Figure 1 This is the overall front view of the invention;

[0032] Figure 2 This is a schematic diagram showing the distribution of the heat dissipation air ducts on the reactor body according to the present invention;

[0033] Figure 3 This is a schematic diagram showing the distribution of the movable component within the heat dissipation duct of the present invention;

[0034] Figure 4 This is a schematic diagram showing the distribution of the reinforcing units on the pressure ring according to the present invention;

[0035] Figure 5 This is a schematic diagram showing the separation of the sealing ring and the annular cavity according to the present invention;

[0036] Figure 6 This is a schematic diagram of the interior of the annular cavity of the present invention;

[0037] Figure 7 This is a schematic diagram of the reciprocating lead screw of the present invention installed in the heat dissipation duct;

[0038] Figure 8 This is a schematic diagram of the contoured frame of the present invention within the heat dissipation duct;

[0039] Figure 9 This is a schematic diagram showing the distribution of the annular cavity and the contoured frame of the present invention;

[0040] Figure 10 This is a schematic diagram of the plugging ring of the present invention installed in the annular cavity;

[0041] Figure 11 This is a schematic diagram of the installation of the dynamic plug and pressurization pipe of the present invention;

[0042] Figure 12 This is a schematic diagram of the driving component of the present invention;

[0043] Figure 13 This is a schematic diagram showing the distribution of the reciprocating lead screw and the contour frame of the present invention;

[0044] Figure 14 This is a schematic diagram of the cleaning strip of the present invention installed on the contour frame;

[0045] Figure 15 This is a schematic diagram of the patting plate of the present invention installed on the contour frame.

[0046] In the diagram: 1. Reactor body; 101. Coil layer; 102. Support condition; 103. Heat dissipation duct; 104. Reinforcing frame; 2. Annular cavity; 3. Annular duct No. 1; 4. Annular duct No. 2; 5. Interconnection path; 6. Pressure ring; 7. Air ring; 8. Plug ring; 9. Annular air zone; 10. Cooling fan; 11. Sliding rod; 12. Retaining ring; 13. Return spring; 14. Normally open pipe; 15. Pressurized pipe; 16. Dynamic plug; 17. Reciprocating screw; 18. Heat dissipation cavity; 19. Air... 20. Hole; 21. Drive gear ring; 22. Screw nut; 23. Drive chamber; 24. Rotating area; 25. Rotating impeller; 26. Drive gear; 27. Air inlet pipe; 28. Air outlet pipe; 29. ​​Contouring frame; 30. Reserved clearance; 31. Roller; 32. Cleaning strip; 33. Lifting ring cavity; 34. Air outlet; 35. Guide sleeve; 36. Sliding rod; 37. No. 1 wedge platform; 38. Assembly platform; 39. Control rod; 40. No. 2 wedge platform; 41. Beating plate; 42. Control spring. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0048] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0049] Example 1: The present invention provides a technical solution: such as Figure 1 , Figure 2 and Figure 3 As shown, a DC air-core reactor includes a reactor body 1, which is formed by stacking multiple coil layers 101 sequentially. Multiple support structures 102 are evenly distributed between the coil layers 101, forming multiple heat dissipation channels 103 on the coil layers 101 through the support structures 102. Reinforcing frames 104 are installed at the top and bottom of the coil layers 101. The reactor also includes:

[0050] Multiple annular cavities 2 are distributed on the top between adjacent coil layers 101 of the reactor body 1. Each annular cavity 2 is connected to the reinforcing frame 104. The bottom of each annular cavity 2 is open. A first annular air duct 3 is provided at the bottom of the annular cavity 2. A second annular air duct 4 is provided at the top of the annular cavity 2, which communicates with the first annular air duct 3. Multiple interconnecting paths 5 are arranged in a circular array between the first annular air duct 3 and the second annular air duct 4.

[0051] like Figure 4 , Figure 5 and Figure 6 As shown, multiple sealing rings are slidably disposed within multiple annular cavities 2. Normally, the sealing rings are separated from the top of the reactor body 1. The sealing rings consist of a pressure ring 6, an air ring 7, and a blocking ring 8. The air ring 7 is integrally disposed on top of the pressure ring 6 and slidably disposed within the first annular air duct 3. A first sliding track is provided within the first annular air duct 3 to cooperate with the air ring 7. The size of the pressure ring 6 is consistent with the size of the heat dissipation air duct 103 between adjacent coils, enabling it to seal the top of the heat dissipation air duct 103. A limiting device for the blocking ring 8 is provided within the second annular air duct 4. The limiting block prevents the blocking ring 8 from excessively resetting. Under normal conditions, the top of the blocking ring 8 is located below the interconnection path 5. An annular air zone 9 is opened at the top of the air ring 7. The blocking ring 8 is set on the air ring 7 by a bracket and slides into the second annular air duct 4. Under normal conditions, the blocking ring 8 blocks the first annular air duct 3, so that the airflow enters the second annular air duct 4 through the interconnection path 5. The blocking ring 8 and the annular air zone 9 are staggered. The bottom of each sealing ring is arranged in a circular array with multiple reinforcing units. The multiple reinforcing units are respectively set in conjunction with multiple heat dissipation air ducts 103.

[0052] The cooling fan 10 is mounted on the reinforcing frame 104 by a bracket, and the cooling fan 10 communicates with the top of multiple annular cavities 2 through pipes to complete the cooling airflow delivery. Specifically, the cooling fan 10 communicates with the second annular air duct 4 through pipes.

[0053] Also includes:

[0054] Multiple sliding rods 11 are arranged in a circular array on the top of the blocking ring 8. Each sliding rod 11 slides through the annular cavity 2, and a retaining ring 12 is installed on the top of each sliding rod 11.

[0055] Multiple return springs 13 are correspondingly sleeved on the outside of multiple sliding rods 11. Each return spring 13 is set between the annular cavity 2 and the retaining ring 12. The multiple return springs 13 pull the blocking ring 8 back to the first annular air duct 3.

[0056] In embodiments of the present invention, such as Figure 10 and Figure 11 As shown, each reinforcing unit includes:

[0057] Multiple normally open pipes 14 are arranged in a circular array at the bottom of the pressure ring 6 and are interconnected with the annular air zone 9. The multiple normally open pipes 14 are respectively arranged in conjunction with multiple heat dissipation air ducts 103.

[0058] Multiple pressurizing pipes 15 are arranged in a circular array at the bottom of the pressure ring 6 and located on one side of the normally open pipe 14, and all multiple pressurizing pipes 15 are interconnected with the annular air zone 9;

[0059] Multiple dynamic plugs 16 are arranged in a circular array at the top of the annular cavity 2. The bottom of each dynamic plug 16 extends to the top of the multiple pressurizing pipes 15. Multiple clearance areas are provided on the plugging ring 8 to cooperate with the multiple dynamic plugs 16. Under normal conditions, the dynamic plugs 16 move to the top of the pressurizing pipes 15 to complete the sealing.

[0060] It is worth noting that during the conventional cooling of the reactor body 1: the cooling airflow introduced by the cooling fan 10 is sent into the annular cavity 2 through the annular cavity 2. Since the blocking ring 8 normally blocks the second annular air duct 4, the cooling airflow entering the annular cavity 2 is sent into the first annular air duct 3 through multiple interconnected paths 5, and then into multiple normally open pipes 14 through the annular air zone 9 of the air ring 7. Since the bottom of the normally open pipe 14 is interconnected with the heat dissipation cavity 18, the cooling airflow is sent into the heat dissipation cavity 18 and discharged into the heat dissipation air duct 103 at various heights through multiple air holes 19. This completes the accelerated cooling and temperature reduction operation of the heat dissipation air duct 103, which provides assistance for the operation of the reactor body 1 and avoids the reactor body 1 from overheating and affecting operation. At the same time, the design of the annular cavity 2 and the sealing ring can complete the interval shielding of the top of the heat dissipation air duct 103, preventing impurities from falling into the heat dissipation air duct 103 and accumulating, which affects the heat dissipation operation, and further improves the safety of the reactor body 1 operation.

[0061] Example 2: This example provides a further technical solution for the moving part.

[0062] like Figure 7 , Figure 8 and Figure 9 As shown, it also includes multiple reciprocating screws 17. Each reciprocating screw 17 is rotatably mounted in the heat dissipation duct 103 via a bracket. A heat dissipation cavity 18 is opened in the center of the reciprocating screw 17. The top of the heat dissipation cavity 18 is open and the bottom is sealed. The top of the heat dissipation cavity 18 is slidably sealed to the normally open pipe 14. Multiple air holes 19 are opened from top to bottom around the reciprocating screw 17 and communicate with the heat dissipation cavity 18.

[0063] A drive gear ring 20 is fixedly sleeved on the top of the reciprocating lead screw 17. A drive component that meshes with the drive gear ring 20 is installed in the heat dissipation duct 103 through a bracket. A lead screw nut 21 is sleeved on the outside of the reciprocating lead screw 17. A moving component connected to the lead screw nut 21 is slidably arranged in the heat dissipation duct 103.

[0064] like Figure 12As shown, the drive unit includes a drive chamber 22, which is mounted in the heat dissipation duct 103 via a bracket. A rotating area 23 is provided in the drive chamber 22. A rotating impeller 24 is rotatably mounted in the rotating area 23. A sealing disc is provided on the rotating impeller 24 to rotate and seal against the top of the rotating area 23. A drive gear 25 that meshes and drives the drive gear ring 20 is fixedly mounted on the sealing disc. An air inlet pipe 26 is connected to one side of the drive chamber 22 and is connected to a pressurization pipe 15 via a hose. A first check valve is installed at the end of the air inlet pipe 26 to unidirectionally introduce gas into the rotating area 23. An air outlet pipe 27 is connected to one side of the air inlet pipe 26 in the drive chamber 22. A second check valve is installed at the end of the air outlet pipe 27 to unidirectionally discharge gas from the rotating area 23.

[0065] In embodiments of the present invention, such as Figure 13 As shown, the moving part includes a contour frame 28, which is connected to the lead screw nut 21. Both ends of the contour frame 28 slide and fit against the side wall of the support condition 102. A reserved gap 29 is provided between the two sides of the contour frame 28 and the coil layer 101.

[0066] At the four corners of the bottom of the contour frame 28, rollers 30 are rotatably mounted on the brackets to contact the coil layer 101. Multiple rollers 30 compensate for the reserved gap 29 between the contour frame 28 and the coil layer 101. Cleaning strips 31 are installed on the reserved gaps 29 on both sides of the contour frame 28. The cleaning strips 31 are specifically replaced by flexible brushes, flexible scrapers and other cleaning materials that can complete the cleaning.

[0067] It is worth noting that when processing the heat dissipation duct 103 of the reactor body 1: by setting a moving part, the airflow of the cooling fan 10 is increased, which increases the air pressure in the first annular duct 3, pushing the blocking ring 8 to move within the first annular duct 3 and overcoming the tension of the return spring 13, so that the first annular duct 3 and the second annular duct 4 are interconnected. When the blocking ring 8 moves down, the pressure ring 6 moves down synchronously to block the top of the heat dissipation duct 103. At the same time, when the blocking ring 8 moves down, the dynamic plug 16 and the pressurization pipe 15 move relative to each other, so that the pressurization pipe 15 opens. Then the cooling airflow is introduced into the air inlet pipe 26 through the pressurization pipe 15, driving the rotating impeller 24 to rotate. The air is discharged through the outlet pipe 27 into the heat dissipation air duct 103 for auxiliary cooling and to accelerate the air flow. When the rotating impeller 24 rotates, the power is transmitted to the reciprocating lead screw 17 through the drive gear 25 and the drive gear ring 20, which drives the lead screw nut 21 and the contour frame 28 to move up and down in the heat dissipation air duct 103. Cleaning strips 31 are provided on both sides of the contour frame 28, which can scrape and clean the surface of the coil layer 101 to avoid the accumulation of impurities on the surface of the coil layer 101 and affect the heat dissipation. The cleaning frequency and cleaning position can be controlled. When cleaning is not required, simply reduce the air pressure of the cooling fan 10 to reset the pressure ring 6 and the plugging ring 8, and the processing work can be stopped.

[0068] Example 3: This example provides a further technical solution for the slapping plate 40.

[0069] like Figure 14 and Figure 15 As shown, a lifting ring cavity 32 is sleeved outside the reciprocating screw 17, and multiple air vents 33 are arranged in a circular array on the inner wall of the lifting ring cavity 32. The air vents 33 are configured to cooperate with the air holes 19. Two guide sleeves 34 that communicate with the lifting ring cavity 32 are symmetrically installed on both sides of the lifting ring cavity 32. A sliding rod 35 is slidably installed in the guide sleeve 34, and a sliding track is opened in the guide sleeve 34 to restrict the sliding rod 35. A cleaning brush is installed on the inner wall of the lifting ring cavity 32 to actively clean the reciprocating screw 17. A wedge-shaped platform 36 is installed at the front end of the sliding rod 35.

[0070] Two assembly platforms 37 are symmetrically installed on both sides of the top of the contour frame 28. The two assembly platforms 37 are connected to two guide sleeves 34 respectively. Control rods 38 are slidably passed through the two assembly platforms 37. Each assembly platform 37 is provided with a sliding area to limit the control rods 38. A second wedge platform 39 that cooperates with the first wedge platform 36 is installed on the top of each control rod 38. A tapping plate 40 is installed at the bottom of each control rod 38. A control spring 41 is sleeved on the outside of each control rod 38. The control spring 41 is located between the assembly platform 37 and the tapping plate 40 to control the reset.

[0071] It is worth noting that when performing auxiliary cleaning on moving parts: by setting a lifting ring cavity 32 on the reciprocating screw 17, the lifting ring cavity 32 and the reciprocating screw 17 generate relative movement, which can clean the reciprocating screw 17. Since multiple air vents 33 are opened on the inner wall of the lifting ring cavity 32, when the contour frame 28 moves, when the air vent 33 connects with the air hole 19, the gas enters the guide sleeve 34 through the lifting ring cavity 32, pushing the sliding rod 35 and the first wedge platform 36 forward, squeezing the second wedge platform 39, causing the control rod 38 and the tapping plate 40 to move down to tap the cleaning strip 31 once. After the gas is released, the tapping plate 40 resets, thus completing the intermittent tapping process and avoiding the accumulation of impurities on the cleaning strip 31, which affects the cleaning.

[0072] This invention provides a DC air-core reactor, the specific working principle of which is as follows: The reactor body 1 is installed in the working area by the reinforcing frame 104, and the wiring is completed before use. Annular cavities 2 are added to the top of the heat dissipation ducts 103 at the top of multiple coil layers 101. The design of the annular cavities 2 effectively shields against foreign objects falling into the heat dissipation ducts 103, preventing excessive temperature rise. Simultaneously, it ensures the natural ventilation effect of the heat dissipation ducts 103. The cooling fan 10 introduces cooling airflow into the annular cavities 2 and evenly distributes it to the multiple heat dissipation ducts 103 to complete the cooling action, ensuring the cooling of the reactor body 1. To address the need for avoiding overheating and potential safety hazards, and to resolve dust accumulation caused by long-term airflow within the heat dissipation duct 103, a movable component is installed. This component controls the pressure of the cooling airflow introduced by the cooling fan 10, forcing the sealing ring to switch. While sealing the top of the reactor body 1, the gas is diverted to the drive component, causing the movable component to move up and down within the heat dissipation duct 103. This removes residual dust from the surface of the coil layer 101. Simultaneously, due to the increased cooling airflow and the sealing of the top of the heat dissipation duct 103, the removed impurities are discharged through the bottom of the reactor body 1, preventing impurities from flying and ensuring the stable operation of the reactor body 1.

[0073] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A direct current air-core reactor, comprising a reactor body (1), the reactor body (1) is sequentially and superimposedly sleeved by a plurality of coil layers (101), a plurality of supporting conditions (102) are uniformly distributed between the plurality of coil layers (101), a plurality of heat dissipation air ducts (103) are formed on the plurality of coil layers (101) through the plurality of supporting conditions (102), and a reinforcing frame (104) is installed at the top and bottom of the plurality of coil layers (101), characterized in that, Also include: A plurality of annular cavities (2) are arranged at the top of the reactor body (1), the inner bottom of the annular cavity (2) is provided with a first annular air duct (3), the inner top of the annular cavity (2) is provided with a second annular air duct (4) intercommunicating with the first annular air duct (3), and a plurality of intercommunication paths (5) are arranged in a circular array between the first annular air duct (3) and the second annular air duct (4); A plurality of sealing ring members are slidingly arranged in the plurality of annular cavities (2), the sealing ring members are normally arranged separately from the top of the reactor body (1), the sealing ring members are divided into a compression ring (6), an air ring (7) and a plugging ring (8), the air ring (7) is integrally arranged at the top of the compression ring (6), the annular air area (9) is formed at the top of the air ring (7), the plugging ring (8) is arranged on the air ring (7) through a support, and the plugging ring (8) is distributed in a staggered manner with the annular air area (9), and the bottom of each sealing ring member is provided with a plurality of reinforcing units in a circular array; A cooling fan (10) is arranged on the reinforcing frame (104) through a support, and the cooling fan (10) is connected with the top of the plurality of annular cavities (2) through a pipeline to complete the cooling air flow transmission. The direct-current air-core reactor further comprises: A plurality of sliding rods (11) are arranged in a circular array at the top of the plugging ring (8), each sliding rod (11) slidingly passes through the annular cavity (2), and a stop ring (12) is arranged at the top of each sliding rod (11); A plurality of reset springs (13) are correspondingly arranged outside the plurality of sliding rods (11), and each reset spring (13) is arranged between the annular cavity (2) and the stop ring (12).

2. A DC air-core reactor according to claim 1, characterized in that: Each reinforcing unit comprises: A plurality of always-open pipes (14) are arranged in a circular array at the bottom of the compression ring (6) and are in intercommunication with the annular air area (9), and the plurality of always-open pipes (14) are arranged in cooperation with the plurality of heat dissipation air ducts (103); A plurality of pressurizing pipes (15) are arranged in a circular array at the bottom of the compression ring (6) and are located on one side of the always-open pipe (14), and the plurality of pressurizing pipes (15) are in intercommunication with the annular air area (9); A plurality of dynamic plugs (16) are arranged in a circular array at the inner top of the annular cavity (2), and the bottoms of the plurality of dynamic plugs (16) are sealingly extended to the tops of the plurality of pressurizing pipes (15).

3. A DC air core reactor according to claim 2, characterized in that: Further comprising a plurality of reciprocating screw rods (17), each reciprocating screw rod (17) is rotatably arranged in the heat dissipation air duct (103) through a support, a heat dissipation cavity (18) is formed at the center of the reciprocating screw rod (17), the top of the heat dissipation cavity (18) is slidingly and sealingly connected with the always-open pipe (14), and a plurality of air holes (19) in intercommunication with the heat dissipation cavity (18) are formed in the reciprocating screw rod (17) in a penetrating manner from top to bottom around the reciprocating screw rod (17).

4. A DC air core reactor according to claim 3, characterized in that: A driving gear ring (20) is fixedly arranged at the top of the reciprocating screw rod (17), a driving member in meshing transmission with the driving gear ring (20) is arranged in the heat dissipation air duct (103) through a support, a screw nut (21) is drivingly arranged outside the reciprocating screw rod (17), and a moving member connected with the screw nut (21) is slidingly arranged in the heat dissipation air duct (103).

5. A DC air core reactor according to claim 4, characterized in that: The driving member comprises a driving chamber (22), the driving chamber (22) is arranged in the heat dissipation air duct (103) through a support, a rotating area (23) is arranged in the driving chamber (22), a rotating impeller (24) is rotatably arranged in the rotating area (23), a sealing disc is arranged on the rotating impeller (24) and is in rotating sealing contact with the top of the rotating area (23), a driving gear (25) is fixedly arranged on the sealing disc and is in meshing transmission connection with the driving gear ring (20), an air inlet pipe (26) is communicated and arranged on one side of the driving chamber (22), the air inlet pipe (26) is communicated with the pressurizing pipe (15) through a hose, and an air outlet pipe (27) is communicated and arranged on the driving chamber (22) on the side of the air inlet pipe (26).

6. A DC air core reactor according to claim 5, characterized in that: The moving member comprises a profiling frame (28), the profiling frame (28) is connected with the screw nut (21), and the profiling frame (28) is in sliding and close contact with the side wall of the support condition (102) at both ends, and a reserved gap (29) is arranged between the profiling frame (28) and the coil layer (101).

7. A DC air core reactor according to claim 6, characterized in that: Rollers (30) in contact with the coil layer (101) are rotatably arranged at the four corners of the bottom of the profiling frame (28) through supports, the reserved gap (29) between the profiling frame (28) and the coil layer (101) is compensated by the plurality of rollers (30), and cleaning strips (31) are arranged on the reserved gaps (29) on both sides of the profiling frame (28).

8. A DC air core reactor according to claim 3, characterized in that: A lifting ring cavity (32) is arranged outside the reciprocating screw rod (17), a plurality of air ports (33) are circularly arranged on the inner wall of the lifting ring cavity (32), the air ports (33) are arranged in cooperation with the air holes (19), two guide sleeves (34) are symmetrically arranged on both sides of the lifting ring cavity (32) and are in communication with the lifting ring cavity (32), a sliding rod (35) is slidably arranged in the guide sleeve (34), and a first wedge-shaped table (36) is arranged at the front end of the sliding rod (35).

9. A DC air core reactor according to claim 8, characterized in that: Two assembly tables (37) are symmetrically arranged on both sides of the top of the profiling frame (28), the two assembly tables (37) are connected with the two guide sleeves (34) respectively, a control rod (38) is slidably arranged on each of the two assembly tables (37), a second wedge-shaped table (39) is arranged at the top of each control rod (38) and cooperates with the first wedge-shaped table (36), a beating plate (40) is arranged at the bottom of each control rod (38), and a control spring (41) is arranged outside each control rod (38).

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