Constant-power constant-voltage adjustable transformer

Abstract

The invention discloses a constant-power constant-voltage adjustable transformer, and relates to the field of transformers, the constant-power constant-voltage adjustable transformer comprises a transformer main body, the bottom of a mounting seat is provided with an air entraining flow stirring piece located between the transformer main body and an electromagnetic winding, and the top of the mounting seat is provided with a reversing driving unit. By arranging the air entraining flow stirring piece, when a transmission connecting rod rotates, a bottom plate presses one end of a movable pressing rod, so that a movable plate horizontally moves along a guide rod, the movable plate moves towards a supporting plate, and air between the movable plate and the supporting plate is sprayed out through air holes in an air pipe; meanwhile, a worm drives an air pipe to rotate through a worm gear, so that the air injection range of air holes is enlarged, the fluidity of air with heat in the transformer body is improved, when a positioning sliding block moves upwards relative to a mounting base, a corrugated telescopic pipe is shrunk and restored, and the overall heat dissipation efficiency of equipment is improved through cooperation with cooling fins; and the service life of the transformer is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of transformers, and more specifically, to a constant-power and constant-voltage adjustable transformer. Background Art

[0002] A power transformer is a static electrical device, simply referred to as a transformer, which is used to change an alternating voltage of a certain value into another or several different values of alternating voltages with the same frequency. A transformer is a device that uses the principle of electromagnetic induction to change the alternating voltage. Its main components are the primary coil, secondary coil, and iron core. Its main functions include: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, etc.

[0003] Generally, by driving a slider to move along the secondary winding, a change in the number of turns of the secondary winding of the transformer is formed, so as to achieve a continuous linear adjustment of the output voltage of the transformer between 5% and 100% of the maximum output voltage. During use, since the inside of the transformer is in a sealed state, the air flow of the hot air inside the transformer is poor at this time, and the heat dissipation efficiency is low. During use, the temperature of the transformer rises, resulting in a shortened service life of the insulating material and transformer oil, thereby shortening the service life of the transformer. Summary of the Invention

[0004] The purpose of the present invention is to provide a constant-power and constant-voltage adjustable transformer to solve the problem of low heat dissipation efficiency of the transformer.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A constant-power and constant-voltage adjustable transformer, including a transformer body, a heat sink is installed on the transformer body, an electromagnetic winding is arranged inside the transformer body, a mounting seat is installed on the top of the transformer body, an air guiding and stirring member located between the transformer body and the electromagnetic winding is arranged at the bottom of the mounting seat, and a commutation driving unit is arranged at the top of the mounting seat; The air-introducing and flow-agitating member includes a support frame installed on the top of the mounting seat. Inside the mounting seat, a corrugated expansion pipe extending to the inside of the transformer body is installed. At the bottom of the corrugated expansion pipe, there is a bottom plate. On the top of the bottom plate, there is a positioning slider located inside the corrugated expansion pipe. Inside the support frame, a transmission connecting rod is rotatably connected through a bearing. Inside the positioning slider, there is a reciprocating lead screw connected to the bottom of the transmission connecting rod. The bottom of the bottom plate is rotatably connected to a movable pressure rod through a rotating shaft. At the end of the movable pressure rod away from the bottom plate, there is a movable plate. On the inner wall of the transformer body, a positioning plate is installed. On the positioning plate, there is a guide rod, and the movable plate is slidably connected to the guide rod. On the top of the movable plate, a worm gear is rotatably connected through a bearing. Inside the worm gear, there is an air pipe passing through the movable plate. Air holes are formed in the air pipe. On the top of the movable plate, there is a worm meshing with the worm gear. At both ends of the worm, there are spur gears. On the positioning plate, there is a positioning rack meshing with the spur gears. The air pipe is connected to an annular chamber located below the worm gear. One side of the annular chamber is connected to a movable plate. On the side of the movable plate away from the annular chamber, there is a rectangular expansion sleeve. At the end of the rectangular expansion sleeve away from the movable plate, there is a support plate connected to the inner wall of the transformer body.

[0006] As a further scheme of the present invention: The number of the movable pressure rods is multiple, and the multiple movable pressure rods are equidistantly distributed along the center of the bottom plate.

[0007] As a further scheme of the present invention: On the top of the positioning slider, there is a crescent pin matching the reciprocating lead screw, and the centers of the transmission connecting rod, the reciprocating lead screw, the bottom plate, and the corrugated expansion pipe are coaxial.

[0008] As a further scheme of the present invention: The inner diameter of the inner wall of the mounting seat is equal to the inner diameter of the corrugated expansion pipe, and a sealing gasket is provided at the connection between the mounting seat and the top of the transformer body.

[0009] As a further scheme of the present invention: On the movable plate, there is a through hole with a diameter larger than that of the air pipe, and the centers of the air pipe and the worm gear are coaxial.

[0010] As a further solution of the present invention: The commutation drive unit includes an inner connection ring installed on the outer side of the support frame. The outer wall of the inner connection ring is rotatably connected to an outer connection ring through a bearing. The outer wall of the outer connection ring is provided with a U-shaped frame. The top of the U-shaped frame is provided with a positioning bin located above the inner connection ring. The inner side of the positioning bin is provided with a rotating connecting shaft extending to the outside of the positioning bin. The top of the transmission connecting rod is provided with a second transmission bevel gear. The rotating connecting shaft is provided with a first transmission bevel gear located outside the positioning bin and meshing with the second transmission bevel gear. The rotating connecting shaft is provided with a six-blade rotating plate located inside the positioning bin. The top of the positioning bin is provided with an air guide pipe. The edge of the six-blade rotating plate extends to the inside of the air guide pipe. The two ends of the air guide pipe are installed with air collecting hoods. The outer wall of the air guide pipe is installed with support columns. The top of the support column is provided with a wind direction guiding plate.

[0011] As a further solution of the present invention: The minimum diameter of one end of the air collecting hood is greater than the inner diameter of the air guide pipe.

[0012] As a further solution of the present invention: The wind direction guiding plate is of a Y-shaped structure, and the vertical central axis of the wind direction guiding plate is aligned with the vertical central axis of the outer connection ring.

[0013] As a further solution of the present invention: The number of the positioning bins is two, and the two positioning bins are symmetrically distributed along the vertical central axis of the wind direction guiding plate. The support column and the center of the transmission connecting rod are coaxial.

[0014] As a further solution of the present invention: The diameter of the first transmission bevel gear is greater than the diameter of the second transmission bevel gear. The top of the positioning bin is provided with a through hole extending to the inside of the air guide pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting the air guiding and turbulence generating member, when the transmission connecting rod rotates, the bottom plate presses one end of the movable pressure rod, so as to make the movable plate move horizontally along the guiding rod, thereby making the movable plate move towards the supporting plate, so that the air between the movable plate and the supporting plate is ejected through the air holes on the air pipe. At the same time, the worm drives the air pipe to rotate through the worm gear, so as to increase the jet range of the air holes, improve the fluidity of the hot air inside the transformer body, and when the positioning slider moves upward relative to the mounting seat, the corrugated telescopic pipe contracts and restores, and cooperates with the heat sink to improve the overall heat dissipation efficiency of the equipment and extend the service life of the transformer; 2. By setting a reversing drive unit, when the wind blows through the transformer body, the wind guide plate will swing with the wind. During this process, the wind guide plate will drive the air guide tube to swing to rotate the U-shaped frame, so that the outer ring rotates relative to the inner ring. During this process, the first transmission bevel gear is always in a meshing state with the second transmission bevel gear, so that the direction of the air guide tube is the same as the wind direction. When the wind passes through the air guide tube, it will move the edge of the six-leaf rotating plate. At this time, the six-leaf rotating plate will rotate relative to the positioning bin, so that the six-leaf rotating plate drives the rotating coupling to rotate. When the rotating coupling rotates, it will drive the second transmission bevel gear to rotate through the first transmission bevel gear, so that the transmission connecting rod rotates with the second transmission bevel gear, thereby providing rotational force for the transmission connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the transformer body of the present invention; Figure 3 It is a schematic diagram of the connection between the mounting base and the air pipe of the present invention; Figure 4 It is a schematic diagram of the connection between the positioning bin and the mounting seat of the present invention; Figure 5 It is a schematic diagram of the internal structure of the bellows expansion tube of the present invention; Figure 6 This is a schematic diagram of the internal structure of the positioning bin of the present invention; Figure 7 It is a schematic diagram of the connection between the support plate and the air pipe of the present invention; Figure 8 It is a schematic diagram of the connection between the positioning plate and the movable plate of the present invention.

[0017] In the figure: 1. transformer body; 2. heat sink; 3. electromagnetic winding; 4. positioning chamber; 5. mounting seat; 6. positioning plate; 7. support plate; 8. corrugated telescopic tube; 9. bottom plate; 10. air guide tube; 11. wind guide plate; 12. movable pressure rod; 13. air pipe; 14. annular chamber; 15. movable plate; 16. six-leaf rotating plate; 17. first transmission bevel gear; 18. support frame; 19. inner link ring; 20. outer link ring; 21. transmission connecting rod; 22. second transmission bevel gear; 23. U-shaped frame; 24. air collecting cover; 25. rotating shaft; 26. reciprocating screw rod; 27. positioning slider; 28. support column; 29. ​​positioning rack; 30. worm gear; 31. movable plate; 32. rectangular telescopic sleeve; 33. air hole; 34. worm; 35. spur gear; 36. guide rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to its overall structure.

[0020] Please refer to Figures 1 to 8 , in an embodiment of the present invention, a constant power and constant voltage adjustable voltage transformer includes a transformer main body 1, a heat sink 2 is installed on the transformer main body 1, an electromagnetic winding 3 is arranged inside the transformer main body 1, a mounting seat 5 is installed on the top of the transformer main body 1, an air guiding and turbulence generating member located between the transformer main body 1 and the electromagnetic winding 3 is arranged at the bottom of the mounting seat 5, and a commutation driving unit is arranged on the top of the mounting seat 5; The air-introducing and flow-agitating member includes a support frame 18 installed on the top of the mounting base 5. Inside the mounting base 5, a corrugated expansion pipe 8 extending to the inside of the transformer body 1 is installed. At the bottom of the corrugated expansion pipe 8, a bottom plate 9 is provided. On the top of the bottom plate 9, a positioning slider 27 located inside the corrugated expansion pipe 8 is provided. Inside the support frame 18, a transmission connecting rod 21 is rotatably connected through a bearing. Inside the positioning slider 27, a reciprocating lead screw 26 connected to the bottom of the transmission connecting rod 21 is provided. At the bottom of the bottom plate 9, a movable pressure rod 12 is rotatably connected through a rotating shaft. At one end of the movable pressure rod 12 away from the bottom plate 9, a movable plate 31 is provided. On the inner wall of the transformer body 1, a positioning plate 6 is installed. On the positioning plate 6, a guide rod 36 is provided. The movable plate 31 is slidably connected to the guide rod 36. On the top of the movable plate 31, a worm gear 30 is rotatably connected through a bearing. Inside the worm gear 30, an air pipe 13 passing through the movable plate 31 is provided. Air holes 33 are formed in the air pipe 13. On the top of the movable plate 31, a worm 34 meshing with the worm gear 30 is provided. At both ends of the worm 34, spur gears 35 are installed. On the positioning plate 6, a positioning rack 29 meshing with the spur gears 35 is provided. The air pipe 13 is connected to an annular chamber 14 located below the worm gear 30. One side of the annular chamber 14 is connected to a movable plate 15. On the side of the movable plate 15 away from the annular chamber 14, a rectangular expansion sleeve 32 is provided. At one end of the rectangular expansion sleeve 32 away from the movable plate 15, a support plate 7 connected to the inner wall of the transformer body 1 is installed.

[0021] In this embodiment, when the wind blows over the transformer body 1, the air-introducing and flow-agitating member drives the transmission connecting rod 21 to rotate. At this time, the positioning slider 27 will move up and down reciprocally along the reciprocating lead screw 26. When the positioning slider 27 moves downward relative to the mounting base 5, the corrugated expansion pipe 8 extends. At the same time, the bottom plate 9 presses one end of the movable pressure rod 12, so as to make the movable plate 31 move horizontally along the guide rod 36, thereby making the movable plate 31 move towards the positioning plate 6. During this process, the air pipe 13 presses the movable plate 15 through the annular chamber 14, and the movable plate 15 will move towards the support plate 7. At the same time, the rectangular expansion sleeve 32 contracts, so as to make the air between the movable plate 15 and the support plate 7 spray out through the air holes 33 on the air pipe 13. At the same time, the spur gear 35 will rotate selflessly along the positioning rack 29, making the worm 34 drive the air pipe 13 to rotate through the worm gear 30, so as to increase the jet range of the air holes 33 and improve the fluidity of the hot air inside the transformer body 1. When the positioning slider 27 moves upward relative to the mounting base 5, the corrugated expansion pipe 8 contracts and restores. At this time, the movable plate 31 moves in a direction away from the positioning plate 6. At this time, the air around the air pipe 13 will enter between the support plate 7 and the movable plate 15 due to the negative pressure state between the movable plate 15 and the support plate 7, cooperating with the heat sink 2 to improve the overall heat dissipation efficiency of the equipment and extend the service life of the transformer.

[0022] Please refer specifically to Figure 2 、Figure 3 , Figure 4 There are multiple movable pressure rods 12, and the multiple movable pressure rods 12 are equidistantly distributed along the center of the bottom plate 9.

[0023] In this embodiment, by setting this structure, the suction and jet ranges of the air pipe 13 are improved, and further the fluidity of the hot air inside the transformer body 1 is improved.

[0024] Please refer particularly to Figure 5 , a crescent pin matching the reciprocating lead screw 26 is provided at the top of the positioning slider 27, and the centers of the transmission connecting rod 21, the reciprocating lead screw 26, the bottom plate 9, and the corrugated expansion pipe 8 are coaxial.

[0025] In this embodiment, by setting this structure, the vertical up-and-down movement of the bottom plate 9 is realized, and the corrugated expansion pipe 8 is prevented from shifting when it expands and contracts with the movement of the bottom plate 9.

[0026] Please refer particularly to Figure 1 , Figure 5 , the inner wall diameter of the mounting seat 5 is equal to the inner wall diameter of the corrugated expansion pipe 8, and a gasket is provided at the connection between the mounting seat 5 and the top of the transformer body 1.

[0027] In this embodiment, by setting this structure, the corrugated expansion pipe 8 blocks the outside air, and prevents the outside air from entering the transformer body 1 through the mounting seat 5.

[0028] Please refer particularly to Figure 7 , Figure 8 , a through hole with a diameter larger than that of the air pipe 13 is provided on the movable plate 31, and the air pipe 13 and the center of the worm gear 30 are coaxial.

[0029] In this embodiment, by setting this structure, the air pipe 13 is prevented from being damaged due to friction with the movable plate 31 during rotation, thereby improving the service lives of the air pipe 13 and the movable plate 31.

[0030] Please refer particularly to Figure 1 , Figure 2 , Figure 4 , Figure 6, the commutation drive unit includes an inline ring 19 installed outside the support frame 18. The outer wall of the inline ring 19 is rotatably connected to an outer link ring 20 through a bearing. The outer wall of the outer link ring 20 is provided with a U-shaped frame 23. The top of the U-shaped frame 23 is provided with a positioning bin 4 located above the inline ring 19. The inner side of the positioning bin 4 is provided with a rotating connecting shaft 25 extending outside the positioning bin 4. The top of the transmission connecting rod 21 is provided with a second transmission bevel gear 22. The rotating connecting shaft 25 is provided with a first transmission bevel gear 17 located outside the positioning bin 4 and meshing with the second transmission bevel gear 22. The rotating connecting shaft 25 is provided with a six-blade rotating plate 16 located inside the positioning bin 4. The top of the positioning bin 4 is provided with an air guide pipe 10. The edge of the six-blade rotating plate 16 extends inside the air guide pipe 10. Both ends of the air guide pipe 10 are provided with air collecting hoods 24. The outer wall of the air guide pipe 10 is provided with support columns 28. The top of the support columns 28 is provided with a wind direction deflector 11.

[0031] In this embodiment, when the wind blows through the transformer body 1, the wind direction deflector 11 will swing along with the blowing of the wind. During this process, the wind direction deflector 11 will drive the air guide pipe 10 to swing, so as to rotate the U-shaped frame 23, thereby enabling the outer link ring 20 to rotate relative to the inline ring 19. During this process, the first transmission bevel gear 17 is always in meshing with the second transmission bevel gear 22, so as to make the orientation of the air guide pipe 10 the same as the wind direction. When the wind passes through the air guide pipe 10, it will deflect the edge of the six-blade rotating plate 16. At this time, the six-blade rotating plate 16 will rotate relative to the positioning bin 4, so as to make the six-blade rotating plate 16 drive the rotating connecting shaft 25 to rotate. When the rotating connecting shaft 25 rotates, it will drive the second transmission bevel gear 22 to rotate through the first transmission bevel gear 17, so as to make the transmission connecting rod 21 rotate along with the second transmission bevel gear 22, thereby providing a rotational force for the transmission connecting rod 21.

[0032] Please refer specifically to Figure 4 , Figure 6 , the minimum diameter at one end of the air collecting hood 24 is greater than the inner diameter of the air guide pipe 10.

[0033] In this embodiment, by setting this structure, the flow rate of the wind passing through the inside of the air guide pipe 10 is increased, thereby improving the rotation efficiency of the six-blade rotating plate 16.

[0034] Please refer specifically to Figure 4 , Figure 6 , the wind direction deflector 11 is of a Y-shaped structure, and the vertical central axis of the wind direction deflector 11 is aligned with the vertical central axis of the outer link ring 20.

[0035] In this embodiment, by setting this structure, the wind direction deflector 11 swings along with the change of the wind direction, so as to make the air flow always pass through the air guide pipe 10.

[0036] Please refer specifically to Figure 4, there are two positioning bins 4, and the two positioning bins 4 are symmetrically distributed along the vertical central axis of the wind direction guide plate 11, and the centers of the support columns 28 and the transmission connecting rods 21 are coaxial.

[0037] In this embodiment, by setting this structure, the stability of the rotation of the wind direction guide plate 11 is improved.

[0038] Please refer specifically to Figure 4 , the diameter of the first transmission bevel gear 17 is larger than the diameter of the second transmission bevel gear 22, and a through hole extending into the inside of the air guide pipe 10 is provided at the top of the positioning bin 4.

[0039] In this embodiment, by setting this structure, the rotation speed of the transmission connecting rod 21 is greater than the rotation speed of the first transmission bevel gear 17 when the six-page rotating plate 16 rotates, further improving the fluidity of the hot air inside the transformer body 1.

[0040] Working principle: When the wind blows through the transformer body 1, the wind guide plate 11 will swing with the wind. In this process, the wind guide plate 11 will drive the air guide tube 10 to swing to rotate the U-shaped frame 23, so that the outer ring 20 rotates relative to the inner ring 19. In this process, the first transmission bevel gear 17 is always in meshing state with the second transmission bevel gear 22, so that the direction of the air guide tube 10 is the same as the wind direction. When the wind passes through the air guide tube 10, it will move the edge of the six-leaf rotating plate 16, and the six-leaf rotating plate 16 will rotate relative to the inner ring 19. The positioning bin 4 is rotated to make the six-leaf rotating plate 16 drive the rotating coupling 25 to rotate. When the rotating coupling 25 rotates, the second transmission bevel gear 22 is driven to rotate through the first transmission bevel gear 17, so that the transmission connecting rod 21 rotates along with the second transmission bevel gear 22, thereby providing a rotational force for the transmission connecting rod 21. At this time, the positioning slider 27 reciprocates up and down along the reciprocating screw rod 26. When the positioning slider 27 moves downward relative to the mounting seat 5, the bellows expansion tube 8 is extended, and at the same time, the bottom plate 9 presses the movable pressure One end of the rod 12 is pressed to make the movable plate 31 move horizontally along the guide rod 36, so that the movable plate 31 moves toward the positioning plate 6. In this process, the air pipe 13 squeezes the movable plate 15 through the annular bin 14, and the movable plate 15 moves toward the support plate 7. At the same time, the rectangular telescopic sleeve 32 contracts, so that the air between the movable plate 15 and the support plate 7 is ejected through the air hole 33 on the air pipe 13. At the same time, the spur gear 35 rotates along the positioning rack 29, so that the worm 34 drives the worm gear 30 to rotate. The moving air pipe 13 rotates to increase the jet range of the air hole 33, thereby improving the fluidity of the hot air inside the transformer body 1. When the positioning slider 27 moves upward relative to the mounting seat 5, the bellows expansion tube 8 contracts and recovers. At this time, the movable plate 31 moves away from the positioning plate 6. At this time, the air around the air pipe 13 will enter between the support plate 7 and the movable plate 15 due to the negative pressure between the movable plate 15 and the support plate 7, thereby cooperating with the heat sink 2 to improve the overall heat dissipation efficiency of the equipment and extend the service life of the transformer.

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A constant power constant voltage adjustable transformer, comprising a transformer body (1), characterized in that: A heat sink (2) is mounted on the transformer body (1), an electromagnetic winding (3) is arranged inside the transformer body (1), a mounting seat (5) is mounted on the top of the transformer body (1), an air induced flow stirring member located between the transformer body (1) and the electromagnetic winding (3) is arranged at the bottom of the mounting seat (5), and a reversing drive unit is arranged at the top of the mounting seat (5); The air induced flow stirring member comprises a support frame (18) mounted on the top of a mounting seat (5); a corrugated telescopic tube (8) extending to the inside of a transformer body (1) is mounted inside the mounting seat (5); a bottom plate (9) is arranged at the bottom of the corrugated telescopic tube (8); and a positioning slider (27) located inside the corrugated telescopic tube (8) is arranged at the top of the bottom plate (9).

2. A constant power constant voltage adjustable transformer according to claim 1, characterized in that: The air induced flow stirring member also includes a transmission connecting rod (21) rotatably connected to the inner side of the support frame (18) via a bearing, a reciprocating screw (26) connected to the bottom of the transmission connecting rod (21) is arranged on the inner side of the positioning slider (27), a movable pressure rod (12) is rotatably connected to the bottom of the bottom plate (9) via a rotating shaft, and an end of the movable pressure rod (12) away from the bottom plate (9) is provided with a movable plate (31), a positioning plate (6) is installed on the inner wall of the transformer body (1), a guide rod (36) is arranged on the positioning plate (6), the movable plate (31) is slidably connected to the guide rod (36), the top of the movable plate (31) is rotatably connected to a worm gear (30) via a bearing, an air pipe (13) penetrating the movable plate (31) is arranged on the inner side of the worm gear (30), and an air pipe (13) is provided on the air pipe (13) (33), a worm (34) meshing with the worm gear (30) is arranged on the top of the movable plate (31), spur gears (35) are installed at both ends of the worm gear (34), a positioning rack (29) meshing with the spur gear (35) is arranged on the positioning plate (6), an annular bin (14) located below the worm gear (30) is connected to the air pipe (13), one side of the annular bin (14) is connected to the movable plate (15), a rectangular telescopic sleeve (32) is arranged on the side of the movable plate (15) away from the annular bin (14), a support plate (7) connected to the inner wall of the transformer body (1) is installed on the end of the rectangular telescopic sleeve (32) away from the movable plate (15), and a plurality of movable pressure rods (12) are arranged, and the plurality of movable pressure rods (12) are distributed at equal distances along the center of the bottom plate (9).

3. A constant power constant voltage adjustable transformer according to claim 2, characterized in that: A crescent pin matching the reciprocating screw (26) is arranged on the top of the positioning slide block (27), and the centers of the driving connecting rod (21), the reciprocating screw (26), the bottom plate (9), and the bellows telescopic tube (8) are coaxial.

4. A constant power constant voltage adjustable transformer according to claim 2, characterized in that: The inner wall diameter of the mounting seat (5) is equal to the inner wall diameter of the corrugated expansion tube (8), and a sealing gasket is provided at the connection between the mounting seat (5) and the top of the transformer body (1).

5. The constant power constant voltage adjustable transformer according to claim 2, characterized in that: The movable plate (31) is provided with a through hole having a diameter greater than that of the air pipe (13), and the centers of the air pipe (13) and the worm wheel (30) are coaxial.

6. A constant power constant voltage adjustable transformer according to claim 2, characterized in that: The reversing drive unit comprises an inner link ring (19) mounted on the outside of a support frame (18); the outer wall of the inner link ring (19) is rotatably connected to an outer link ring (20) via a bearing; a U-shaped frame (23) is mounted on the outer wall of the outer link ring (20); a positioning bin (4) located above the inner link ring (19) is arranged on the top of the U-shaped frame (23); a rotating shaft (25) extending to the outside of the positioning bin (4) is arranged on the inner side of the positioning bin (4); a second transmission bevel gear (22) is arranged on the top of the transmission connecting rod (21); and a rotating shaft (25) is arranged on the rotating shaft (25). A first transmission bevel gear (17) is disposed outside the positioning bin (4) and meshed with the second transmission bevel gear (22); a six-leaf rotating plate (16) is disposed on the rotating shaft (25) and is disposed inside the positioning bin (4); an air guide tube (10) is disposed on the top of the positioning bin (4); an edge of the six-leaf rotating plate (16) extends to the inside of the air guide tube (10); air collecting hoods (24) are mounted at both ends of the air guide tube (10); a support column (28) is mounted on the outer wall of the air guide tube (10); and a wind deflector plate (11) is disposed on the top of the support column (28).

7. A constant power constant voltage adjustable transformer according to claim 6, characterized in that: The minimum diameter of one end of the air collecting hood (24) is greater than the inner diameter of the air guide pipe (10).

8. The constant power constant voltage adjustable transformer according to claim 6, characterized in that: The wind deflector plate (11) is of a Y-shaped structure, and the vertical center axis of the wind deflector plate (11) is aligned with the vertical center axis of the outer link ring (20).

9. The constant power constant voltage adjustable transformer according to claim 6, characterized in that: The number of the positioning bins (4) is two, and the two positioning bins (4) are symmetrically distributed along the vertical center axis of the wind deflector plate (11), and the support column (28) is coaxial with the center of the transmission connecting rod (21).

10. The constant power constant voltage adjustable transformer according to claim 6, characterized in that: The diameter of the first transmission bevel gear (17) is greater than the diameter of the second transmission bevel gear (22), and a through hole extending to the interior of the air guide tube (10) is provided on the top of the positioning chamber (4).

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