Single-phase adjustable reactor structure

Abstract

The invention relates to a single-phase adjustable reactor structure and relates to the technical field of reactors, the single-phase adjustable reactor structure comprises a machine body, a core column and a side yoke, the core column comprises an upper iron core and a lower iron core, the single-phase adjustable reactor structure further comprises a driving mechanism, and the driving mechanism comprises a lead screw which is rotationally arranged on the machine body and is in threaded connection with the upper iron core and the lower iron core through two connecting assemblies; the lead screw rotates to drive the upper iron core and the lower iron core to get close to or away from each other. The driving part is used for driving the screw rod to rotate; and the guide assembly is arranged on the machine body, is in sliding connection with the connecting assembly and is used for guiding the movement of the upper iron core and the lower iron core. The upper iron core and the lower iron core are driven by the driving part to get close to or get away from each other, so that the impedance of the upper coil and the impedance of the lower coil are consistent, meanwhile, the upper iron core and the lower iron core are guided through the guiding assembly when moving, the moving precision of the upper iron core and the lower iron core is higher, and the loss of the reactor and the probability of vibration noise generation are reduced.

Description

Technical Field

[0001] This application relates to the technical field of reactors, and in particular, to a single-phase adjustable reactor structure. Background Art

[0002] A reactor, also known as an inductor, is widely used in circuits. Due to the effect of electromagnetic induction in the circuit, there is a certain inductance, which can play a role in blocking current changes.

[0003] A reactor usually consists of a body, an inductor coil, a core column, etc. The traditional core column includes a moving iron core at the upper part and a fixed iron core at the lower part. The air gap is adjusted by controlling the up and down movement of the moving iron core to adjust the inductance.

[0004] In the above adjustment process, only the moving iron core moves, and the fixed iron core remains stationary. The reactor coil has an upper and lower parallel structure, resulting in different impedances of the upper and lower coils, thus forming a circulating current, greatly increasing the probability of loss and vibration noise. Summary of the Invention

[0005] In order to reduce the loss and the probability of vibration noise of the reactor, this application provides a single-phase adjustable reactor structure.

[0006] A single-phase adjustable reactor structure provided by this application adopts the following technical solutions: A single-phase adjustable reactor structure includes a body, a core column arranged on the body, and side yokes located around the core column. The core column includes an upper iron core and a lower iron core arranged at intervals vertically. It also includes a driving mechanism arranged on the body. The driving mechanism includes: A lead screw rotatably arranged on the body; Two connecting components, respectively detachably arranged on the upper iron core and the lower iron core and both threadedly connected to the lead screw. The rotation of the lead screw is used to drive the upper iron core and the lower iron core to approach or move away from each other; A driving member for driving the lead screw to rotate; A guiding component arranged on the body and slidably connected to the connecting component and used to guide the movement of the upper iron core and the lower iron core.

[0007] By adopting the above technical solutions, the core column is located at the center, and multiple side yokes are evenly distributed around the core column and jointly form a closed magnetic circuit with the core column, so that more magnetic fluxes circulate inside the iron core, reducing the probability of magnetic leakage phenomenon, thereby reducing the loss of the reactor.

[0008] When adjustment is needed, the driving member drives the lead screw to rotate. The rotation of the lead screw drives the upper iron core and the lower iron core to approach or move away from each other, so that the impedances of the upper and lower coils are the same. At the same time, the guiding assembly guides the upper iron core and the lower iron core during movement, so that the upper iron core and the lower iron core can only move vertically and cannot rotate, making the movement process of the two more accurate, and also reducing the probability of the lead screw being worn due to the skew of the two, further reducing the probability of inconsistent impedances of the upper and lower coils, and reducing the loss and vibration noise of the reactor.

[0009] The connecting assembly is detachably arranged on the upper iron core and the lower iron core. The upper iron core and the lower iron core need to be made of special materials to realize the function of the reactor, and the connecting assembly needs to be convenient for threaded connection with the lead screw. Therefore, it can better match the needs of the two, and can also realize the installation and replacement of multiple structures of the reactor, improving the service life of the reactor.

[0010] Optionally, both the upper iron core and the lower iron core are of a radially integrated casting structure, and two mounting holes and a communication hole are coaxially formed during casting. The two mounting holes are located at both ends of the upper iron core or the lower iron core, and the diameter of the mounting holes is larger than that of the communication hole and they are communicated with each other through the communication hole. The connecting assembly passes through the communication hole and presses against the two mounting holes for positioning and can be removed from the mounting holes.

[0011] By adopting the above technical solution, the core column is of a radially integrated casting structure, so that when the air gap of the reactor is adjusted, the leakage magnetic flux of the coil will not cause eddy current heating of the steel structure; the radially integrated structure means that the magnetic flux distribution of the core column is more uniform, thereby reducing the local magnetic field intensity and reducing the generation of eddy currents. The integrated casting structure improves the stability of the core column. This design ensures that during the air gap adjustment operation of the reactor, even if the leakage magnetic flux of the coil increases, the eddy current heating of the steel structure can be effectively controlled, thereby reducing the loss of the reactor and improving the operating safety of the reactor.

[0012] By coaxially integrally forming two mounting holes and a communication hole, and then the connecting assembly passes through the communication hole and presses against the two mounting holes, the connection of the connecting assembly with the upper iron core or the lower iron core can be realized. Then, the lead screw is connected with the connecting assembly to realize the connection of the upper iron core and the lower iron core with the lead screw. Therefore, the convenience during the production process of the upper iron core and the lower iron core is improved, thereby further improving the concentricity and the accuracy of other parameters of the structures of the upper iron core and the lower iron core, making the structures of the two more stable. At the same time, the accuracy of the position after the driving mechanism is connected with the upper iron core and the lower iron core is improved, and the accuracy during the adjustment process is improved, thereby reducing the loss of the reactor and improving the operating safety of the reactor.

[0013] Furthermore, the connecting component needs to be threadedly connected to the lead screw and slidably connected to the guiding component. Therefore, the connecting component needs to be designed with materials and parameters suitable for threaded connection. When the connecting component is connected to the upper iron core and the lower iron core, it presses against the mounting holes for connection. This connection method has no special requirements for materials. Therefore, the connecting component can better adapt to the threaded connection with the lead screw, improve the accuracy after the upper iron core and the lower iron core are connected to the lead screw, thus greatly improving the stability during the adjustment process, reducing the probability of magnetic leakage, reducing the loss of the reactor, and improving the operation safety of the reactor.

[0014] Optionally, the connecting component includes: The first connecting column and the second connecting column are both snap-fitted and installed on the communication hole, respectively press against the two mounting holes for positioning and are slidably connected to the connecting component. The two first connecting columns are respectively located at one end of the upper iron core and the lower iron core close to each other and are located inside the mounting holes. The lead screw is threadedly connected to the two first connecting columns and slidably passes through the two second connecting columns; A plurality of double-headed screws are arranged at intervals and threadedly connected to the first connecting column and slidably pass through the second connecting column. A positioning nut that presses against the second connecting column for positioning is threadedly connected to each double-headed screw.

[0015] By adopting the above technical solution, a plurality of double-headed screws are threadedly connected to the first connecting column, the first connecting column is snap-fitted and installed on the communication hole, a plurality of double-headed screws are slidably passed through the second connecting column, so that the second connecting column is snap-fitted and installed on the other end of the communication hole, the positioning nut is threadedly connected to the double-headed screw, so that the positioning nut presses against the second connecting column, so that the first connecting column and the second connecting column respectively press against the two mounting holes for positioning, so as to fixedly install the connecting component on the upper iron core and the lower iron core, and make the two first connecting columns located at one end of the upper iron core and the lower iron core close to each other. Then, the lead screw is threadedly connected to the two first connecting columns and passes through the second connecting column, and the guiding component is slidably connected to the first connecting column and the second connecting column, so as to realize the connection between the lead screw and the upper iron core and the lower iron core, and the guiding component is slidably connected to the first connecting column and the second connecting column.

[0016] The two positioning nuts are located at one end of the upper iron core and the lower iron core away from each other, and the two first connecting columns are located inside the mounting holes. Therefore, when the upper iron core and the lower iron core approach each other, the positioning nuts will not interfere with their movement, so that they can approach each other infinitely, and even be in contact with each other, so as to improve the adjustment effect while realizing the connection, reduce the probability of magnetic leakage, reduce the loss of the reactor, and improve the operation safety of the reactor.

[0017] Optionally, the guiding component includes: Two mounting tubes are vertically arranged at intervals on the machine body, and the lead screw coaxially passes through the two mounting tubes; Two guiding columns are arranged at intervals on two mounting pipes and slidably penetrate through two connecting columns I and two connecting columns II for guiding.

[0018] By adopting the above technical solution, the two guiding columns slidably penetrate through the two connecting columns I and the two connecting columns II for guiding, so as to guide the upper iron core and the lower iron core during the moving process. Moreover, the two guiding columns are arranged at intervals, so that the guiding holes for the guiding columns to pass through on the connecting columns I and II are also evenly distributed. Thus, guiding can be realized and the requirements for the stability of the upper iron core and the lower iron core can be met at the same time, the probability of magnetic leakage is reduced, the loss of the reactor is reduced, and the operation safety of the reactor is improved.

[0019] Optionally, both the lead screw and the connecting assembly are made of non-magnetic steel material, and a groove for destroying the eddy current path is coaxially formed inside the lead screw.

[0020] By adopting the above technical solution, both the lead screw and the connecting assembly are made of non-magnetic steel. Non-magnetic steel has a low magnetic permeability and will not be strongly magnetized by the magnetic field, thus reducing the generation of eddy currents. The opening of the groove further reduces the eddy current loss. The groove destroys the continuous path of the eddy current, so that even if a small amount of eddy currents are generated, they cannot form a closed loop because the path is cut off, thus significantly reducing the eddy current loss, reducing the probability of magnetic leakage, reducing the loss of the reactor, and improving the operation safety of the reactor.

[0021] Optionally, two supporting assemblies that are threadedly connected to the lead screw and slidably connected to the guiding assembly are provided. The two connecting columns II are located between the two supporting assemblies and are respectively connected to the two supporting assemblies. The two supporting assemblies move simultaneously with the two connecting columns II and maintain an upward acting force on the upper iron core and the lower iron core under the action of elastic force.

[0022] By adopting the above technical solution, since the two connecting columns I are located at one end where the upper iron core and the lower iron core are close to each other, and at the same time, in order to make the connecting column II and the connecting column I press against the two mounting holes, the lead screw can only be slidably connected to the connecting column II, so that the lead screw will not interfere with the connection between the connecting column I and the connecting column II and the two mounting holes. Therefore, the gravity of the upper iron core and the lower iron core will be concentrated at the connection between the lead screw and the two connecting columns I, making the connection between the two prone to wear and even damage, thus reducing the accuracy during the adjustment process, increasing the loss of the reactor, and reducing the operation safety of the reactor. Moreover, the two connecting columns I are located at one end where the upper iron core and the lower iron core are close to each other, and the lead screw does not contact the two connecting columns II, so that the support for the upper iron core and the lower iron core is only concentrated at one end of the two, thus reducing the support effect on the two and reducing the stability during the operation of the two.

[0023] The two support components cooperate to push the upper iron core and the lower iron core upward under the action of elastic force, thereby reducing the pressure on the lead screw and the connection between the lead screw and one of the two connecting columns, reducing the probability of wear or even damage at the connection, thereby improving the accuracy during the adjustment process, reducing the loss of the reactor, and improving the operating safety of the reactor.

[0024] When the lead screw rotates and under the action of the guiding component, the two support components and the second connecting column move simultaneously, so that support can be achieved regardless of the positions of the upper iron core and the lower iron core and the supporting force remains unchanged, further reducing the loss of the reactor and improving the operating safety of the reactor.

[0025] Since the weight of the structure connected to the upper iron core and the lower iron core is much greater than the mass of the support component, the inertia formed by the former is greater than that of the latter at the end of the movement. Therefore, through the action of elastic force, the movement of the upper iron core and the lower iron core can be buffered, reducing the impact force on the connection between the lead screw and the first connecting column under the action of inertia, reducing the probability of wear or even damage at the connection, thereby improving the accuracy during the adjustment process, reducing the loss of the reactor, and improving the operating safety of the reactor.

[0026] At the same time, the connection between the first connecting column and the lead screw is located at one end of the upper iron core, and the support component can support the end of the upper iron core far from the first connecting column, so that both ends of the upper iron core and both ends of the lower iron core can be supported, improving the stability of the upper iron core and the lower iron core during movement. Therefore, the loss of the reactor is further reduced, and the operating safety of the reactor is improved.

[0027] Optionally, the support component includes: A support disk, which is slidably connected to the guiding component and threadedly connected to the lead screw; A fixed ring, which is detachably arranged on the second connecting column; A spring, which is sleeved on the lead screw and both ends are connected to the fixed ring and the support disk; one of the springs generates an upward pulling force on the upper iron core, and the other spring generates an upward pushing force on the lower iron core.

[0028] By adopting the above technical solution, the spring is used to apply an upward pulling force on the upper iron core, and the other spring is used to apply an upward pushing force on the lower iron core to overcome the gravity of the two; at the same time, the lead screw rotates to drive the upper iron core and the second connecting column to move, and the guiding rod prevents the support disk from rotating, that is, the fixed ring, the spring and the support disk move simultaneously to maintain the upward acting force on the upper iron core and the lower iron core. At the same time, the spring can also buffer the inertia of the upper iron core and the lower iron core. The above structure is simple and stable, thereby reducing the loss of the reactor and improving the operating safety of the reactor.

[0029] The support plate is connected to the second connecting column through the guide rod and the fixed ring, so that the end of the upper iron core away from the first connecting column can be supported by the support plate, and thus the support for both ends of the upper iron core and the lower iron core can be realized. Moreover, the spring is sleeved on the screw rod, and the gap between the springs is small, so that impurities and moisture can be blocked from contacting the screw rod and damaging the screw rod. Therefore, the loss of the reactor is further reduced, and the operation safety of the reactor is improved.

[0030] By adopting the above technical solution, the supporting force of the spring on the lower iron core is less than or equal to the gravity of the lower iron core. Protective sleeves respectively connected to the fixed ring and the frame are arranged on the opposite side walls of the support plate at the first connecting column, and the screw rod passes through the protective sleeve for protection.

[0031] By adopting the above technical solution, the spring can support the lower iron core as much as possible, thereby reducing the probability of damage to the thread on the screw rod caused by the gravity of the lower iron core; since the lower iron core generates pressure on the spring, the spring is compressed and the gap is small, so that the external dust can be blocked and protected; however, since the upper iron core generates a downward pulling force on the spring, the spring is stretched and the gap is increased, and at this time, the dust is easily moved onto the screw rod. Therefore, through the design of the protective sleeve, the dust can be blocked from moving onto the screw rod, thereby reducing the adverse effect of the dust on the movement of the screw rod, improving the accuracy during the adjustment process, and further improving the service life of the reactor.

[0032] Optionally, through holes for multiple double-headed screws and guide components to pass through are formed in the fixed ring, and the positioning nut pushes the fixed ring to press against the second connecting column for positioning.

[0033] By adopting the above technical solution, multiple double-headed screws and multiple guide rods are passed through multiple through holes, and then the positioning nut is threadedly connected to the double-headed screw, so that the positioning nut presses against the fixed ring for positioning, thereby realizing the fixed installation of the fixed ring on the second connecting column, improving the convenience during the installation process, and moreover, the multiple double-headed screws can be connected into one body through the fixed ring, thereby improving the stability after connection, reducing the loss of the reactor, and improving the operation safety of the reactor.

[0034] Optionally, fixing components for fixing the inductance coil are arranged on the machine body and between multiple yokes and core columns. The fixing components include: The first fixing strip is arranged on the machine body; The second fixing strip is detachably arranged on the first fixing strip, and a plurality of fixing holes are vertically and spaced apart on the side walls that are in contact with each other. Two fixing holes on the first fixing strip and the second fixing strip are used in cooperation to position the inductance coil.

[0035] By adopting the above technical solution, the inductance coil is wound around a plurality of fixing bars one, and the inductance coil is located on the fixing holes of the fixing bar one. Then, the fixing bar two is fixedly installed on the fixing bar one. Therefore, the fixing bar one and the fixing bar two limit the inductance coil in the fixing holes, so as to fix the inductance coil through the cooperation of the plurality of fixing holes on the plurality of fixing bars one and the plurality of fixing bars two, improving the stability of the inductance coil, reducing the loss of the reactor, and improving the safety of the reactor operation.

[0036] Optionally, both ends of the fixing bar one are positioned on the machine body through plug-in blocks, and the fixing bar two is fixedly connected to the fixing bar one by screws.

[0037] By adopting the above technical solution, both ends of the fixing bar one are plugged and installed on the machine body for positioning, and the fixing bar two is fixedly installed on the fixing bar one through fixing screws, so as to realize the fixation of the inductance coil.

[0038] In summary, the present application includes at least one of the following beneficial technical effects: 1. By having the core column located at the center, a plurality of side yokes are evenly distributed around the core column and jointly form a closed magnetic circuit with the core column, enabling more magnetic flux to circulate inside the iron core, reducing the probability of magnetic leakage, and thus reducing the loss of the reactor.

[0039] 2. By driving the upper iron core and the lower iron core to approach or move away from each other through a driving member, the impedance of the upper and lower coils is made consistent. At the same time, through a guiding assembly to guide the upper and lower iron cores during movement, the upper and lower iron cores can only move vertically and cannot rotate, making the movement process more accurate, reducing the probability of wear of the lead screw due to skewing of the two, further reducing the probability of inconsistent impedance of the upper and lower coils, and reducing the loss and the probability of vibration and noise generation of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a three-dimensional structural schematic diagram of Embodiment 1 of the reactor structure; Figure 2 is Figure 1 the sectional schematic diagram of A-A in Figure 3 is a partial structural schematic diagram of Embodiment 1 of the reactor structure; Figure 4 is a partial structural schematic diagram of Embodiment 2 of the reactor structure; Figure 5 is Figure 4 the enlarged schematic diagram of part B in

[0041] Reference numerals: 1, body; 11, side yoke; 12, upper cover body; 13, lower cover body; 14, upper cover bracket; 15, lower cover bracket; 17, sliding channel; 18, annular plate; 19, protective tube; 2, core column; 21, upper iron core; 22, lower iron core; 23, mounting hole; 24, communication hole; 3, fixing component; 31, first fixing bar; 32, second fixing bar; 33, fixing hole; 4, driving mechanism; 41, lead screw; 42, driving member; 43, guiding component; 44, mounting tube; 45, guiding column; 46, groove body; 5, connecting component; 51, first connecting column; 52, second connecting column; 53, double-headed screw; 531, positioning nut; 54, inserting section; 55, pressing break; 56, guiding hole; 57, threaded hole; 58, sliding hole; 6, supporting component; 61, supporting disc; 62, fixing ring; 63, spring. Detailed implementation mode

[0042] The following further details the present application.

[0043] The embodiment of the present application discloses a single-phase adjustable reactor structure.

[0044] Embodiment 1, referring to Figure 1 , the single-phase adjustable reactor structure includes a body 1, a core column 2 arranged on the body 1, and side yokes 11 located around the core column 2. The core column 2 includes an upper iron core 21 and a lower iron core 22 arranged vertically at intervals. The upper iron core 21 and the lower iron core 22 are coaxially and oppositely arranged. The upper iron core 21 is located below the lower iron core 22 and their structural dimensions are the same. It also includes a driving mechanism 4 arranged on the body 1 and used to drive the upper iron core 21 and the lower iron core 22 to approach or move away from each other. Starting the driving mechanism 4 is used to adjust the air gap size to achieve the adjustment of inductance.

[0045] Referring to Figure 1 and Figure 2 , the body 1 includes an upper cover body 12 and a lower cover body 13 arranged vertically opposite to each other. An upper cover bracket 14 is fixedly installed at the top of the upper cover body 12, and a lower cover bracket 15 is fixedly installed at the bottom of the lower cover body 13. The side yokes 11 are in a vertical state and are fixedly installed on the side walls of the opposite sides of the upper cover body 12 and the lower cover body 13. A plurality of side yokes 11 are arranged in a circumferential array around the axis of the core column 2. Sliding channels 17 are opened on the side walls of the opposite sides of the upper cover body 12 and the lower cover body 13. The sliding channels 17 and the core column 2 are coaxially arranged. Protective tubes 19 coaxial with the sliding channels 17 are fixedly installed at the opposite ends of the upper cover body 12 and the lower cover body 13. The inner diameter of the protective tubes 19 is the same as the diameter of the sliding channels 17. The top end of the upper iron core 21 is slidably installed in the sliding channel 17 and can slide into the protective tube 19. The bottom end of the upper iron core 21 extends vertically downward between the four side yokes 11. Similarly, the bottom end of the lower iron core 22 is slidably installed on another sliding channel 17 and can slide into the protective tube 19. The top end of the lower iron core 22 extends vertically upward between the four side yokes 11.

[0046] On the body 1 and between the four side yokes 11 and the core column 2, there are fixed components 3 for fixing the inductance coil. The four fixed components 3 cooperate to fix the inductance coil. The fixed component 3 includes a first fixing strip 31 and a second fixing strip 32. On the opposite side walls of the upper cover body 12 and the lower cover body 13, an annular plate 18 is fixedly installed. The annular plate 18 is formed with an annular hole coaxial with the sliding channel 17. The two annular holes are for the upper iron core 21 and the lower iron core 22 to pass through. The top and bottom of the first fixing strip 31 are respectively abutted against the opposite side walls of the two annular plates 18 for positioning, and both ends of the first fixing strip 31 are inserted and matched with the two annular plates 18 through two inserting blocks for positioning. After removing the upper cover body 12, the first fixing strip 31 can be removed, so as to realize the disassembly and installation of the first fixing strip 31.

[0047] The second fixing strip 32 is fixedly installed on the side wall of the first fixing strip 31 close to the side yoke 11 by screws. On the opposite side walls of the first fixing strip 31 and the second fixing strip 32 that are abutted against each other, a plurality of first fixing holes 33 are vertically spaced. The inductance coil is first wound around the first fixing holes 33 of the plurality of first fixing strips 31 for positioning, and then the second fixing strip 32 is fixedly installed on the first fixing strip 31. The two corresponding fixing holes 33 on the first fixing strip 31 and the second fixing strip 32 cooperate to limit the inductance coil, thereby improving the stability of the cable coil, that is, improving the service life of the reactor.

[0048] Refer to Figure 1 and Figure 3 As shown in, both the upper iron core 21 and the lower iron core 22 are of a radially integrated casting structure, and two installation holes 23 and a communication hole 24 are coaxially formed during casting. The two installation holes 23 are located at both ends of the upper iron core 21 or the lower iron core 22, and the communication hole 24 communicates the two installation holes 23. The diameter of the installation hole 23 is larger than the diameter of the communication hole 24.

[0049] Refer to Figures 1 - 3 As shown in, the driving mechanism 4 includes a lead screw 41 and a driving member 42. The lead screw 41 is rotatably installed on the opposite side walls of the upper cover bracket 14 and the lower cover bracket 15. The lead screw 41 coaxially passes through the two protective tubes 19 and the two sliding channels 17, and the top end of the lead screw 41 extends above the upper cover bracket 14. The driving member 42 is used to drive the lead screw 41 to rotate. The driving member 42 is a servo motor. The driving member 42 is fixedly installed on the upper surface of the upper cover bracket 14, and the piston rod of the driving member 42 is connected to the lead screw 41 and is used to drive the lead screw 41 to rotate.

[0050] Refer to Figure 1 、 Figure 3The screw rod 41 is mirror-imaged on two threaded segments with opposite spiral lines. The two screw segments are threadedly connected to the upper iron core 21 and the lower iron core 22 through two connecting components 5 respectively. The screw rod 41 rotates to drive the upper iron core 21 and the lower iron core 22 to move closer to or away from each other. The connecting component 5 passes through the connecting hole 24 and presses against the two mounting holes 23 for positioning.

[0051] The two connecting components 5 have the same structure. The following is an explanation of the connecting component 5 connected to the upper iron core 21; the connecting component 5 includes a connecting column 1 51, a connecting column 2 52 and a double-headed screw 53, and the connecting column 1 51 and the connecting column 2 52 are both coaxially arranged with the upper iron core 21, and the connecting column 1 51 and the connecting column 2 52 are respectively located at the bottom and the top of the upper iron core 21, and the other connecting column 1 51 and the connecting column 2 52 are respectively located at the top and the bottom of the lower iron core 22, so that the two connecting columns 1 51 are located on the end where the upper iron core 21 and the lower iron core 22 are close to each other, and the two connecting columns 2 52 are located on the end where the upper iron core 21 and the lower iron core 22 are away from each other.

[0052] The connecting column 1 51 and the connecting column 2 52 have the same structure, the screw rod 41 is coaxially threadedly connected to the connecting column 1 51 and coaxially slidably penetrates the connecting column 2 52; the connecting column 1 51 includes a coaxially arranged plug-in section 54 and a pressure break 55 with gradually increasing diameters, the plug-in section 54 is coaxially plugged and installed on the connecting hole 24, and the pressure break 55 is pressed on the mounting hole 23 for positioning, and the pressure break 55 is located in the mounting hole 23, and the length of the plug-in section 54 on the connecting column 1 51 is greater than the length of the plug-in section 54 on the connecting column 2 52, thereby increasing the length of the threaded connection with the screw rod 41 and improving the connection strength.

[0053] Reference Figure 1 , Figure 3 Two guide holes 56 are arranged in a circular array around the axis of the connecting column 1 51 and the connecting column 2 52. The connecting column 1 51 also has two threaded holes 57 arranged in a circular array around the axis of the connecting column 1 51. The connecting column 2 52 also has two sliding holes 58 arranged in a circular array around the axis of the connecting column 2. The two sliding holes 58 are arranged in a one-to-one correspondence with the two threaded holes 57 and are aligned with each other. The two guide holes 56 are both located between the two threaded holes 57. The angle between the guide hole 56 and the adjacent threaded hole 57 is 90 degrees, and the angle between the threaded hole 57 and the adjacent guide hole 56 is also 90 degrees.

[0054] There are two double-headed screws 53, which are respectively threadedly connected to the two threaded holes 57 for positioning, and the double-headed screws 53 are slidably inserted into the sliding holes 58. Each double-headed screw 53 is threadedly connected with a positioning nut 531 which presses against the side wall of the connecting column 2 52 away from the connecting column 1 51 for positioning.

[0055] The two double-headed screws 53 are threadedly connected to the two threaded holes 57 for positioning. The connecting column one 51 is snap-fitted and installed into the communication hole 24 and pressed against the installation hole 23 for positioning. At the same time, the two double-headed screws 53 pass through the communication hole 24. Then, the connecting column two 52 is snap-fitted and installed into the communication hole 24, so that the two double-headed screws 53 slide through the two sliding holes 58. Finally, the two positioning nuts 531 are respectively threadedly connected to the two double-headed screws 53, and the positioning nuts 531 are screwed to press against the connecting column two 52 and make the connecting column two 52 press against the installation hole 23 for positioning, so as to complete the fixed connection between the connecting assembly 5 and the upper iron core 21. At the same time, the connecting assembly 5 is fixedly connected to the lower iron core 22 in the same way.

[0056] Referring to Figure 1 、 Figure 3 Figure, the driving mechanism 4 further includes a guiding assembly 43. The guiding assembly 43 is arranged on the machine body 1 and is slidably connected to the connecting assembly 5, so as to guide the movement of the upper iron core 21 and the lower iron core 22 and make them move vertically only.

[0057] The guiding assembly 43 includes two mounting tubes 44 and two guiding columns 45. The two mounting tubes 44 are fixedly installed on the side walls of the opposite sides of the upper cover bracket 14 and the lower cover bracket 15. The two ends of the lead screw 41 coaxially pass through the two mounting tubes 44. The two guiding columns 45 are fixedly installed at the opposite ends of the two mounting tubes 44, and the two guiding columns 45 are slidably installed in the two guiding holes 56 of the connecting column one 51 and the connecting column two 52, so as to realize the guiding when the upper iron core 21 and the lower iron core 22 move vertically.

[0058] When the upper iron core 21 and the lower iron core 22 are connected to the lead screw 41, the two guiding columns 45 are slidably passed through the two guiding holes 56 of the upper iron core 21 and the lower iron core 22. Finally, the lead screw 41 and the mounting tubes 44 are installed on the machine body 1, and finally the lead screw 41 is connected to the driving member 42, so as to complete the installation. The driving member 42 is started to drive the lead screw 41 to rotate, so as to drive the upper iron core 21 and the lower iron core 22 to approach or move away from each other.

[0059] The lead screw 41, the connecting assembly 5 and the guiding assembly 43 are all made of non-magnetic steel material. A groove body 46 is coaxially opened inside the lead screw 41. The non-magnetic steel has a low magnetic permeability and will not be strongly magnetized by the magnetic field, thus reducing the generation of eddy currents. The opening of the groove body 46 further reduces the eddy current loss. The groove body 46 destroys the continuous path of the eddy current, so that even if a small amount of eddy currents are generated, they will not be able to form a closed loop because the path is cut off, thus significantly reducing the eddy current loss.

[0060] The working principle of the embodiment of the present application is as follows: The driving member 42 starts to drive the lead screw 41 to rotate. The rotation of the lead screw 41 drives the upper iron core 21 and the lower iron core 22 to approach or move away from each other, so that the impedances of the upper and lower coils are the same. At the same time, two guide posts 45 are used to guide the movement of the upper iron core 21 and the lower iron core 22, making the movement of the upper iron core 21 and the lower iron core 22 more stable and accurate. At the same time, the probability of the lead screw 41 being worn due to the skew of the upper iron core 21 and the lower iron core 22 is reduced, the probability of the impedances of the upper and lower coils being inconsistent is further reduced, and the losses and vibration noises of the reactor are reduced.

[0061] Embodiment 2, referring to Figure 4 and Figure 5 , the difference between this embodiment and Embodiment 1 is that two support assemblies 6 are arranged on the lead screw 41. Two connecting columns II 52 are located between the two support assemblies 6, and the two connecting columns II 52 are respectively connected to the two support assemblies 6. The two support assemblies 6 are threadedly connected to the lead screw 41 and slidably connected to the two guide posts 45, so as to maintain an upward thrust on the upper iron core 21 and the lower iron core 22 under the action of elastic force, thereby reducing the probability of wear or even damage at the connection between the two connecting columns I 51 and the lead screw 41 due to gravity, reducing the loss of the reactor, and improving the safety of the reactor operation.

[0062] The support assembly 6 includes a support disk 61, a fixing ring 62 and a spring 63. The support disk 61 is threadedly connected to the lead screw 41. The two connecting columns II 52, the upper iron core 21 and the lower iron core 22 are all located between the two support disks 61, and the two guide posts 45 are slidably penetrated through the support disk 61, so as to guide the movement of the support disk 61 when it moves and to limit the rotation of the support disk 61, so that the support disk 61 can only move vertically.

[0063] The fixing ring 62 is coaxially arranged with the connecting column II 52 and is provided with a plurality of through holes at intervals. The plurality of through holes are for the two guide posts 45 and the two double-headed screws 53 to pass through. The two double-headed screws 53 and the two guide posts 45 respectively pass through the plurality of through holes, and then the positioning nuts 531 are threadedly connected to the double-headed screws 53, and the positioning nuts 531 push the fixing ring 62 to press against the connecting column II 52 for positioning. At the same time, the fixing ring 62 can be removed by removing the positioning nuts 531, so as to realize the installation and disassembly of the fixing ring 62; the spring 63 is sleeved on the lead screw 41 and its two ends are fixedly connected to the opposite side walls of the fixing ring 62 and the support disk 61.

[0064] Referring to Figure 3 , Figure 4 and Figure 5, the spring 63 located at the upper iron core 21 is in a stretched state to maintain an upward pulling force on the upper iron core 21, and the spring 63 located at the lower iron core 22 is in a compressed state to maintain an upward pushing force on the lower iron core 22, thereby reducing the probability of damage to the connection between the lead screw 41 and the first connecting column 51 caused by the gravity of the upper iron core 21 and the lower iron core 22; at the same time, since the lead screw 41 slides through the second connecting column 52, the support of the second connecting column 52 is realized through the cooperation of the support plate 61, the fixing ring 62 and the spring 63, so that the two ends of the upper iron core 21 and the two ends of the lower iron core 22 can be supported, improving the stability during the movement of the upper iron core 21 and the lower iron core 22, and reducing the probability of damage to the lead screw 41.

[0065] The rotation of the lead screw 41 drives the support plate 61, the spring 63 and the second connecting column 52 to move simultaneously. After adjusting the air gap, the spring 63 can still support the upper iron core 21 and the lower iron core 22 without changing the magnitude of the supporting force, thereby greatly improving the stability during the adjustment process. At the same time, the mass of the structure fixedly connected to the upper iron core 21 is much larger than the mass of the support plate 61. Therefore, when the second connecting column 52 stops moving after completion, the inertia is greater than the inertia of the support plate 61. Therefore, the movement of the upper iron core 21 can be buffered by the spring 63, reducing the buffering force at the connection between the upper iron core 21 and the lower iron core 22 and the lead screw 41, thereby further improving the stability during the adjustment process, reducing the loss of the reactor, and improving the safety of the reactor operation.

[0066] The supporting force of the spring 63 on the lower iron core 22 is less than or equal to the gravity of the lower iron core 22, and the pulling force of the spring 63 on the upper iron core 21 is less than or equal to the gravity of the upper iron core 21; the lower iron core 22 forms a downward pressure on the spring 63, causing the spring 63 to compress and reducing the gap between two adjacent working coils of the spring 63, making the gap small and dust difficult to pass through, thereby blocking the movement of dust onto the lead screw 41; the upper iron core 21 forms a downward pulling force on the spring 63, causing the spring 63 to be stretched, increasing the gap between two adjacent working coils of the spring 63, making it easy for dust to pass through and move onto the lead screw 41; on the opposite side walls of the support plate 61 at the first connecting column 51, that is, on the opposite side walls of the fixing ring 62 and the mounting pipe 44, protective sleeves are fixedly installed. The other ends of the two protective sleeves are respectively fixedly connected to the fixing ring 62 and the mounting pipe 44. The two protective sleeves are in a telescopic state and can be bellows. The lead screw 41 passes through the two protective sleeves to prevent dust from moving onto the lead screw 41 and achieve protection.

[0067] The working principle of the embodiment of the present application is as follows: The spring 63 drives the upper iron core 21 and the lower iron core 22 to both maintain an upward movement trend, thereby being able to reduce the probability of damage occurring at the connection between the lead screw 41 and the first connecting column 51, and improving the stability of the vertical movement of the upper iron core 21 and the lower iron core 22; at the same time, when the upper iron core 21 and the lower iron core 22 move, the support disk 61, the fixed ring 62 and the spring 63 can all move simultaneously, so that the upper iron core 21 and the lower iron core 22 can continue to be supported and the supporting force remains unchanged after moving, thereby further improving the supporting effect. At the same time, the inertia during the movement of the upper iron core 21 and the lower iron core 22 can be buffered through the spring 63, further reducing the loss of the reactor and improving the safety of the reactor operation.

[0068] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A single-phase adjustable reactor structure, characterized in that: The invention comprises a machine body (1), a core column (2) arranged on the machine body (1), and a side yoke (11) located around the core column (2), wherein the core column (2) comprises an upper iron core (21) and a lower iron core (22) arranged vertically at intervals, and further comprises a driving mechanism (4) arranged on the machine body (1), wherein the driving mechanism (4) comprises: A screw rod (41) rotatably mounted on the machine body (1); Two connecting assemblies (5) are respectively detachably arranged on the upper iron core (21) and the lower iron core (22) and are threadedly connected to the screw rod (41), wherein the screw rod (41) rotates to drive the upper iron core (21) and the lower iron core (22) to move closer to or farther from each other; A driving member (42), used for driving the screw rod (41) to rotate; A guide assembly (43) is arranged on the machine body (1) and is slidably connected to the connection assembly (5) and is used to guide the movement of the upper iron core (21) and the lower iron core (22).

2. A single-phase adjustable reactor structure according to claim 1, characterized in that: The upper iron core (21) and the lower iron core (22) are both radial integral cast structures and are coaxially formed with two mounting holes (23) and a connecting hole (24) during casting. The two mounting holes (23) are located at both ends of the upper iron core (21) or the lower iron core (22) and have a diameter greater than that of the connecting hole (24). The two mounting holes (23) are connected to each other through the connecting hole (24). The connecting assembly (5) passes through the connecting hole (24) and is pressed against the two mounting holes (23) for positioning and can be removed from the two mounting holes (23) for replacement.

3. A single-phase adjustable reactor structure according to claim 2, characterized in that: The connection component (5) comprises: The first connecting column (51) and the second connecting column (52) are both mounted on the connecting hole (24) and pressed against the two mounting holes (23) for positioning and are slidably connected to the connecting assembly (5); the two first connecting columns (51) are respectively located at the ends of the upper iron core (21) and the lower iron core (22) close to each other and are located in the mounting holes (23); the screw rod (41) is threadedly connected to the two first connecting columns (51) and is slidably penetrated on the two second connecting columns (52); A plurality of double-headed screw rods (53) are arranged at intervals and threadedly connected to the first connecting column (51) and slidably penetrate the second connecting column (52); each of the double-headed screw rods (53) is threadedly connected to a positioning nut (531) that presses against the second connecting column (52) for positioning.

4. A single-phase adjustable reactor structure according to claim 3, characterized in that: The guide assembly (43) comprises: Two mounting tubes (44) are vertically spaced apart and arranged on the machine body (1), and the screw rod (41) coaxially passes through the two mounting tubes (44); Two guide posts (45) are arranged at intervals on the two mounting tubes (44) and are slidably arranged on the two first connecting posts (51) and the two second connecting posts (52) for guidance.

5. A single-phase adjustable reactor structure according to claim 3, characterized in that: The screw rod (41) and the connecting assembly (5) are both made of non-magnetic steel material, and a groove body (46) for destroying the eddy current path is coaxially formed inside the screw rod (41).

6. A single-phase adjustable reactor structure according to claim 3, characterized in that: The screw rod (41) is threadedly connected to two support assemblies (6) which are slidably connected to the guide assembly (43); the two connecting columns (52) are located between the two support assemblies (6) and are respectively connected to the two support assemblies (6); the two support assemblies (6) respectively move simultaneously with the two connecting columns (52) and maintain an upward force on the upper iron core (21) and the lower iron core (22) under the action of elastic force.

7. A single-phase adjustable reactor structure according to claim 6, characterized in that: The support assembly (6) comprises: A support plate (61) is slidably connected to the guide assembly (43) and is threadedly connected to the lead screw (41); A fixing ring (62) detachably disposed on the second connecting column (52); A spring (63) is sleeved on the screw rod (41) and has two ends connected to the fixing ring (62) and the support plate (61); one of the springs (63) generates an upward pulling force on the upper iron core (21), and the other spring (63) generates an upward pushing force on the lower iron core (22).

8. A single-phase adjustable reactor structure according to claim 7, characterized in that: The supporting force of the spring (63) on the lower iron core (22) is less than or equal to the weight of the lower iron core (22); protective sleeves respectively connected to the fixing ring (62) and the body (1) are provided on opposite side walls of the support plate (61) located at the first connecting column (51); and the screw rod (41) passes through the protective sleeve for protection.

9. A single-phase adjustable reactor structure according to claim 7, characterized in that: The fixing ring (62) is provided with through holes for a plurality of double-headed screws (53) and a guide assembly (43) to pass through, and the positioning nut (531) pushes the fixing ring (62) to press against the second connecting column (52) for positioning.

10. The single-phase adjustable reactor structure according to claim 1, characterized in that: A fixing assembly (3) for fixing the inductor coil is disposed on the machine body (1) and between the plurality of return yokes (11) and the core column (2), and the fixing assembly (3) comprises: A fixing strip 1 (31), arranged on the machine body (1); The second fixing strip (32) is detachably arranged on the first fixing strip (31) and has a plurality of fixing holes (33) vertically spaced apart on the side wall that contacts the first fixing strip (31). The two fixing holes (33) located on the first fixing strip (31) and the second fixing strip (32) are used in combination to position the inductor coil.

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