Self-cooled transformer

Abstract

The self-cooled transformer comprises a base, a first heat dissipation mechanism and a second heat dissipation mechanism, a power transformation box is arranged at the upper end of the base, insulating oil is filled in the power transformation box, mounting frames are arranged at the upper ends of the front side and the rear side of the power transformation box, and connecting bottom pipes are arranged at the lower ends of the front side and the rear side of the power transformation box; the first heat dissipation mechanism comprises rotating joints, coil pipes and heat dissipation plates, the rotating joints are arranged in the middles of the opposite inner side faces of the vertically adjacent mounting frames and the connecting bottom pipe, the coil pipes are arranged between the rotating ends of the two vertically adjacent rotating joints, and the heat dissipation plates are arranged on the outer surface of a whole formed by the four coil pipes; the self-cooled transformer is provided with the two sets of heat dissipation mechanisms, air cooling and water cooling are achieved while internal circulation heat dissipation is achieved, the heat dissipation efficiency is improved, the heat dissipation devices can be automatically started step by step according to the equipment temperature, and energy waste is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a self-cooling transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are windings and iron cores. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage regulation (magnetic saturation transformer), etc. When the transformer is working, it will emit a lot of heat. In order to prevent the equipment from being burned out, the transformer is usually equipped with a cooling device. Large transformers mostly use cooling fans and water cooling to achieve the purpose of heat dissipation. Existing transformers are mostly cooled by oil cooling, air cooling and water cooling. Small transformers are suitable for oil cooling. They mostly use insulating oil and heat sink fins to use natural blowing wind to achieve the purpose of cooling. When the insulating oil flows through the windings, it takes away the generated heat and conducts it to the heat sink fins. When the natural wind passes through the heat sink fins, it cools the fins to achieve the cooling of the equipment. Large transformers are suitable for air cooling and water cooling. The surface of the equipment is cooled by external fans and cooling coils. Traditional transformers have only two cooling methods at most, and the cooling efficiency is poor. Once the cooling device is started, it is at maximum power. It cannot automatically perform multi-stage cooling according to the equipment temperature, and the energy consumption is large. For this reason, we propose a self-cooling transformer. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a self-cooling transformer with two sets of heat dissipation mechanisms. While the internal circulation heat dissipation is combined with air cooling and water cooling, the heat dissipation efficiency is improved. The heat dissipation device can also be automatically opened step by step according to the temperature of the equipment, effectively avoiding the waste of energy, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a self-cooling transformer, comprising a base, a first heat dissipation mechanism and a second heat dissipation mechanism; Base: A transformer box is provided at the top, the interior of which is filled with insulating oil, sliding columns are provided at the middle of the left and right sides of the transformer box, mounting frames are provided at the top of the front and rear sides of the transformer box, and connecting bottom pipes are provided at the bottom of the front and rear sides of the transformer box; The first heat dissipation mechanism includes a rotary joint, a coil and a heat dissipation plate. The middle parts of the inner sides of the vertically adjacent mounting frames and the connecting bottom tubes are provided with a rotary joint. The rotating ends of the two vertically adjacent rotary joints are provided with a coil. The outer surface of the whole formed by the four coils is provided with a heat dissipation plate. The second heat dissipation mechanism: It is used for heat dissipation on the surface of the transformer box. It is equipped with two sets of heat dissipation mechanisms. While the internal circulation heat dissipation is combined with air cooling and water cooling, it improves the heat dissipation efficiency. It can also automatically open the heat dissipation device step by step according to the temperature of the equipment, effectively avoiding energy waste.

[0005] Furthermore, the first heat dissipation mechanism also includes a delivery pump, which is arranged in the middle of the upper end of the mounting frame, the input end of the delivery pump is electrically connected to the output end of the external control switch, the water inlet of the delivery pump is connected to the interior of the transformer box, and the water outlet of the delivery pump is connected to the interior of the vertically adjacent mounting frame, providing a basis for the circulation of insulating oil.

[0006] Furthermore, the first heat dissipation mechanism also includes a heat dissipation fan. Wind guide tubes are provided in the middle of the front and rear sides of the upper end of the base. The heat dissipation fans are arranged at the lower end of the inner part of the wind guide tubes. The input end of the heat dissipation fan is electrically connected to the output end of the external control switch to provide air cooling effect for the transformer.

[0007] Furthermore, the first heat dissipation mechanism also includes a temperature sensor, which is respectively arranged in the middle of the front and rear inner walls of the transformer box. The temperature sensor is bidirectionally electrically connected to the external control switch and can monitor the temperature inside the transformer in real time.

[0008] Furthermore, the second heat dissipation mechanism includes a movable frame, a screw rod and a nozzle. The movable frame is slidably connected to the middle of the outer surface of the sliding column, the screw rod is rotatably connected to the middle of the left and right sides of the transformer box, the outer surface of the screw rod is connected to the inner middle thread of the vertically adjacent movable frame, the nozzle is evenly arranged on one side of the movable frame close to the middle of the transformer box, the nozzle is connected to the interior of the vertically adjacent movable frame, the left and right sides of the transformer box are provided with evenly distributed heat dissipation fins, and the nozzles are staggered front and back with the vertically adjacent heat dissipation fins to provide water cooling effect for the left and right sides of the transformer box.

[0009] Furthermore, the second heat dissipation mechanism also includes a movable frame 2, a nozzle 2, a rack plate and a gear. A slide groove is opened in the middle of the left and right inner walls of the base. The movable frame 2 is slidably connected to the middle of the inner part of the base through the slide groove. The nozzles 2 are evenly arranged at the upper end of the movable frame 2. The nozzles 2 are connected to the interior of the movable frame 2. The lower end of the transformer box is provided with evenly distributed heat dissipation fins 2. The nozzles 2 are staggered left and right with the longitudinally adjacent heat dissipation fins 2. The rack plate is arranged at the upper right end of the movable frame 2. The gear is arranged at the lower end of the outer surface of the screw rod 1 on the right side. The gear is meshed with the rack plate to provide a water cooling effect for the lower end of the transformer box.

[0010] Furthermore, the second heat dissipation mechanism also includes a motor, which is respectively arranged in the middle of the left and right sides of the upper end of the transformer box, the input end of the motor is electrically connected to the output end of the external control switch, and the lower end of the output shaft of the motor is fixedly connected to the upper end of the vertically adjacent screw rod 1, providing stable drive for the water cooling work on the surface of the transformer box.

[0011] Furthermore, the second heat dissipation mechanism also includes a transmission component, which includes a screw rod 2, a pulley 1 and a pulley 2. The right side of the lower end of the mounting frame and the right side of the upper end of the base are both rotatably connected to the screw rod 2. The outer surface of the screw rod 2 is connected to the internal middle thread of the movable frame 1 on the right side. The thread lead angle of the screw rod 2 is greater than the static friction angle. The pulley 1 is arranged at the lower end of the outer surface of the screw rod 2. The pulley 2 is fixedly sleeved on the middle part of the outer surface of the rotating end of the rotating joint below. The diameter of the pulley 1 is smaller than the diameter of the pulley 2. The pulley 2 is connected to the laterally adjacent pulley 1 through a belt to provide stable transmission for the water cooling of the transformer box surface and the cooling of the insulating oil.

[0012] Furthermore, it also includes an iron core, windings, low-voltage insulating bushings and high-voltage insulating bushings. The iron core is arranged in the middle of the interior of the transformer box, the windings are all wound around the middle of the outer surface of the iron core, the low-voltage insulating bushings are all arranged on the upper right side of the transformer box, and the high-voltage insulating bushings are all arranged on the upper left side of the transformer box, providing a basis for voltage changes.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the self-cooling transformer has the following advantages: 1. The insulating oil circulates through the coil and the heat sink. The tortuous coil can increase the retention time of the insulating oil. Combined with the heat dissipation of the heat sink, the insulating oil can be efficiently exchanged and cooled, thereby achieving the initial cooling of the transformer.

[0014] 2. The movement of the mobile frame 1 and the mobile frame 2 allows the water mist to be evenly sprayed on the surface of the heat dissipation fin 1 and the heat dissipation fin 2, and the heat dissipation of the transformer box surface is achieved through the principle of water evaporation and heat absorption, further improving the heat dissipation efficiency of the transformer.

[0015] 3. The cooling fan blows the coil and the heat sink, which improves the cooling efficiency of the insulating oil. When the second heat dissipation mechanism is in operation, the coil and the heat sink also rotate synchronously. The coil and the heat sink are tangent to the surrounding air and cooperate with the internal circulation to further accelerate the cooling of the insulating oil. The heat dissipation device is automatically opened step by step according to the equipment temperature, which avoids energy waste and enables the transformer to dissipate heat efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the first heat sink and the second heat sink of the present invention; Figure 3 is a schematic cross-sectional structure diagram of the first heat dissipation mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the second heat dissipation mechanism of the present invention.

[0017] In the figure: 1 base, 2 transformer box, 3 sliding column, 4 mounting frame, 5 connecting bottom pipe, 6 first heat dissipation mechanism, 61 rotary joint, 62 coil, 63 heat dissipation plate, 64 delivery pump, 65 cooling fan, 66 temperature sensor, 7 second heat dissipation mechanism, 71 moving frame 1, 72 screw rod 1, 73 nozzle 1, 74 moving frame 2, 75 nozzle 2, 76 rack plate, 77 gear, 78 motor, 79 transmission assembly, 791 screw rod 2, 792 pulley 1, 793 pulley 2, 8 heat dissipation fin 1, 9 heat dissipation fin 2, 10 iron core, 11 winding, 12 low-voltage insulating sleeve, 13 high-voltage insulating sleeve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-4 , This embodiment provides a technical solution: a self-cooling transformer, comprising a base 1, a first heat dissipation mechanism 6 and a second heat dissipation mechanism 7; Base 1: A transformer box 2 is arranged at the upper end thereof, and the interior of the transformer box 2 is filled with insulating oil. Slide columns 3 are arranged at the middle of the left and right sides of the transformer box 2. Mounting frames 4 are arranged at the upper ends of the front and rear sides of the transformer box 2. Connecting bottom tubes 5 are arranged at the lower ends of the front and rear sides of the transformer box 2. The base 1 also includes an iron core 10, a winding 11, a low-voltage insulating sleeve 12 and a high-voltage insulating sleeve 13. The iron core 10 is arranged in the middle of the transformer box 2. The iron core 10 is the magnetic circuit part of the transformer, and is mainly composed of an iron core column and an iron yoke. The windings 11 are all wound around the middle of the outer surface of the iron core 10. The windings 11 are the core components of the transformer and are made of copper metal with good electrical conductivity. The low-voltage insulating bushings 12 are all arranged on the upper right side of the transformer box 2, and the high-voltage insulating bushings 13 are all arranged on the upper left side of the transformer box 2. The low-voltage insulating bushings 12 and the high-voltage insulating bushings 13 provide insulation for the transformer. The iron core 10 and the windings 11 together form a transformer device, which is immersed in insulating oil to provide a basis for the change of voltage. The first heat dissipation mechanism 6: it includes a rotary joint 61, a coil 62 and a heat sink 63. The middle of the inner side surfaces of the vertically adjacent mounting frame 4 and the connecting bottom tube 5 are both provided with a rotary joint 61. The rotating ends of two vertically adjacent rotary joints 61 are both provided with a coil 62. The four coils 62 on the same side are arranged in a cross shape. The outer surface of the whole formed by the four coils 62 is provided with a heat sink 63. The surface of the heat sink 63 is provided with heat dissipation holes. The coil 62 and the heat sink 63 are both made of metal copper. The first heat dissipation mechanism 6 also includes a delivery pump 64. The delivery pump 64 is arranged in the middle of the upper end of the mounting frame 4. The input end of the delivery pump 64 is electrically connected to the output end of the external control switch. The water inlet of the delivery pump 64 The outlet is connected to the interior of the transformer box 2, and the outlet of the delivery pump 64 is connected to the interior of the vertically adjacent mounting frame 4, providing a basis for the circulation of the insulating oil. The first heat dissipation mechanism 6 also includes a heat dissipation fan 65. The middle of the front and rear sides of the upper end of the base 1 are provided with an air guide tube, which is a hollow cylindrical shape. The heat dissipation fan 65 is arranged at the lower end of the inner part of the air guide tube. The input end of the heat dissipation fan 65 is electrically connected to the output end of the external control switch to provide an air cooling effect for the transformer. The first heat dissipation mechanism 6 also includes a temperature sensor 66, which is respectively arranged in the middle of the front and rear inner walls of the transformer box 2. The temperature sensor 66 is bidirectionally electrically connected to the external control switch, and can monitor the temperature inside the transformer in real time. The second heat dissipation mechanism 7: It is used for heat dissipation on the surface of the transformer box 2. The second heat dissipation mechanism 7 includes a movable frame 71, a screw rod 72 and a nozzle 73. The movable frame 71 is slidably connected to the middle of the outer surface of the sliding column 3, and the screw rod 72 is respectively rotatably connected to the middle of the left and right sides of the transformer box 2. The outer surface of the screw rod 72 is connected with the inner middle thread of the vertically adjacent movable frame 71. The nozzle 73 is evenly arranged on one side of the movable frame 71 close to the middle of the transformer box 2. The nozzle 73 is connected with the inner part of the vertically adjacent movable frame 71. The left and right sides of the transformer box 2 are provided with uniformly distributed heat dissipation fins 8. The nozzles 73 are staggered with the vertically adjacent heat dissipation fins 8 front and back to provide water cooling effect for the left and right sides of the transformer box 2. The second heat dissipation mechanism 7 The thermal mechanism 7 also includes a movable frame 2 74, a nozzle 2 75, a rack plate 76 and a gear 77. The middle parts of the left and right inner walls of the base 1 are provided with a slide groove. The movable frame 2 74 is slidably connected to the middle of the inner part of the base 1 through the slide groove. The movable frame 1 71 and the movable frame 2 74 are both connected to the external water pump through a conduit. The nozzle 2 75 is evenly arranged at the upper end of the movable frame 2 74. The nozzle 2 75 is connected to the inside of the movable frame 2 74. The lower end of the transformer box 2 is provided with evenly distributed heat dissipation fins 2 9. The heat dissipation fins 1 8 and the heat dissipation fins 2 9 are both made of metal copper. The nozzles 2 75 are staggered with the longitudinally adjacent heat dissipation fins 2 9 on the left and right. The rack plate 76 is arranged at the upper right end of the movable frame 2 74. The gear 77 is arranged at the lower end of the outer surface of the right screw rod 1 72. The gear 77 is meshed with the rack plate 76 to provide a water cooling effect for the lower end of the transformer box 2. The second heat dissipation mechanism 7 also includes a motor 78, which is respectively arranged at the middle of the left and right sides of the upper end of the transformer box 2. The input end of the motor 78 is electrically connected to the output end of the external control switch. The lower end of the output shaft of the motor 78 is fixedly connected to the upper end of the vertically adjacent screw rod 1 72 to provide a stable drive for the water cooling work on the surface of the transformer box 2. The second heat dissipation mechanism 7 also includes a transmission assembly 79. The second heat dissipation mechanism 7 also includes a transmission assembly 79. The transmission assembly 79 includes a screw rod 2 791, a pulley 1 792 and a pulley 2 793. The screw rod 2 791 is rotatably connected between the right side of the lower end of the mounting frame 4 and the right side of the upper end of the base 1. The outer surface of the screw rod 2 791 is connected to the right The inner middle thread connection of the movable frame 1 71 on the side, the thread lead angle of the screw rod 2 791 is greater than the static friction angle, the pulley 1 792 is arranged at the lower end of the outer surface of the screw rod 2 791, and the pulley 2 793 is fixedly sleeved on the middle part of the outer surface of the rotating end of the rotating joint 61 below. The diameter of the pulley 1 792 is smaller than the diameter of the pulley 2 793. The pulley 2 793 is connected to the pulley 1 792 adjacent to the horizontal through a belt. The belt runs through the middle of the right side of the inner wall of the longitudinally adjacent air guide tube, providing stable transmission for the water cooling of the surface of the transformer box 2 and the cooling of the insulating oil. Two sets of heat dissipation mechanisms are provided. While the internal circulation heat dissipation is combined with air cooling and water cooling, the heat dissipation efficiency is improved. The heat dissipation device can also be automatically opened step by step according to the temperature of the equipment.Effectively avoids energy waste.

[0020] The working principle of the self-cooling transformer provided by the present invention is as follows: when the transformer is working, the current realizes the change of voltage through the principle of electromagnetic induction. In this process, the winding 11 will generate heat, which is then conducted to the insulating oil. The volume of the insulating oil increases due to the heat, and the specific gravity decreases, so it moves toward the top of the transformer box 2. At this time, the external control switch controls the temperature sensor 66 to work. The temperature sensor 66 detects the temperature of the insulating oil and sends an electrical signal to the external control switch. The external control switch controls the operation of the device according to the temperature of the insulating oil. It is divided into three stages. The temperature of the insulating oil becomes higher in each stage. In the first stage, the insulating oil conducts the temperature to the heat dissipation fin 1 8 and the heat dissipation fin 2 9. The natural wind takes away the heat when passing through the surface of the heat dissipation fin 1 8 and the heat dissipation fin 2 9, thereby realizing initial heat dissipation. Then, the external control switch controls the delivery pump 64 to operate. The delivery pump 64 delivers the insulating oil above the transformer box 2 into the coil 62 through the mounting frame 4 and the rotary joint 61. The insulating oil moves downward in the tortuous coil 62. During this process, the insulating oil transfers the temperature to the coil, and then transfers it to the heat sink 63 through the coil. The insulating oil is cooled by heat exchange. As the delivery pump 64 continues to operate, the cooled insulating oil is injected into the transformer box 2 again through the connecting bottom pipe 5, absorbs the heat of the winding 11, and cools the equipment by the internal circulation of the insulating oil. When the temperature of the insulating oil reaches the second stage, the insulating oil can no longer be cooled efficiently by heat exchange only through the coil 62 and the heat sink 63. The external control switch controls the cooling fan 65 to operate. The hot fan 65 absorbs the surrounding air, and the air flows through the surface of the coil 62 and the heat sink 63 after being accelerated by the heat dissipation fan 65. The air guide tube allows the air to always pass through the surface of the coil 62 and the heat sink 63. The high-speed flowing air can quickly take away the heat on the surface of the coil 62 and the heat sink 63, thereby realizing the second stage of heat dissipation of the equipment. When the temperature of the insulating oil reaches the third stage, more efficient heat dissipation is required. The external control switch controls the operation of the motor 78, and the output shaft of the motor 78 drives the screw rod 1 72 to rotate, and the movable frame 1 71 also moves synchronously, driving the nozzle 1 73 to move accordingly. At this time, the external control switch controls the external water pump, and the external water pump pumps water into the interior of the movable frame 1 71 and the interior of the movable frame 2 74, and then passes through the nozzle 1 73 and the nozzle 2 74. 5 forms water mist and sprays out. The water mist sprayed by the nozzle 73 contacts the surface of the heat dissipation fin 8. When the movable frame 71 moves to a certain position, the motor 78 reverses and the movable frame 71 moves in the opposite direction accordingly. This reciprocating process realizes the heat dissipation work on the left and right sides of the transformer box 2 through the principle of water evaporation and heat absorption. At this time, as the screw rod 72 rotates, the gear 77 also rotates accordingly, driving the rack plate 76 to move, and the movable frame 2 74 and the nozzle 2 75 also move accordingly. The water mist sprayed by the nozzle 2 75 contacts the surface of the heat dissipation fin 2 9. When the motor 78 reverses, the movable frame 2 74 also moves in the opposite direction synchronously. The heat dissipation work under the transformer box 2 is realized again through the principle of water evaporation and heat absorption. At the same time, because the thread lead angle of the screw rod 2 791 is greater than the static friction angle,The movable frame 1 71 can be moved up and down to drive the screw rod 2 791 to rotate. Therefore, as the movable frame 1 71 on the right moves, the screw rod 2 791 also rotates, driving the pulley 1 792 to rotate. Because the diameter of the pulley 1 792 is smaller than the diameter of the pulley 2 793, a transmission effect can be formed, so the pulley 2 793 also rotates, driving the rotating end of the rotary joint 61 to rotate, and the coil 62 and the heat sink 63 also rotate accordingly. The rotating coil 62 and the heat sink 63 quickly tangent to the surrounding air, and the industry performs heat exchange more efficiently. At this time, the combination of oil cooling, air cooling and water cooling can quickly cool the equipment.

[0021] It is worth noting that the delivery pump 64 disclosed in the above embodiment is a GY-200PS delivery pump, the cooling fan 65 is a FB-2200 cooling fan, the temperature sensor 66 is a JXTR-WDS temperature sensor, and the motor 78 is a SGF30-HL-100-450-S motor. The external control switch controls the operation of the delivery pump 64, the cooling fan 65, the temperature sensor 66 and the motor 78 using methods commonly used in the prior art. The external control switch is provided with switch buttons corresponding to the delivery pump 64, the cooling fan 65, the temperature sensor 66 and the motor 78 for controlling their switching operations.

[0022] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Self-cooling transformer, characterized by: It comprises a base (1), a first heat dissipation mechanism (6) and a second heat dissipation mechanism (7); Base (1): A transformer box (2) is provided at the upper end thereof, the interior of the transformer box (2) is filled with insulating oil, sliding columns (3) are provided at the middle of the left and right sides of the transformer box (2), mounting frames (4) are provided at the upper ends of the front and rear sides of the transformer box (2), and connecting bottom pipes (5) are provided at the lower ends of the front and rear sides of the transformer box (2); A first heat dissipation mechanism (6): comprising a rotary joint (61), a coil (62) and a heat dissipation plate (63); a rotary joint (61) is provided at the middle of the inner side surfaces of the vertically adjacent mounting frames (4) and the connecting bottom tube (5); a coil (62) is provided between the rotating ends of two vertically adjacent rotary joints (61); and a heat dissipation plate (63) is provided on the outer surface of the whole formed by the four coils (62); The second heat dissipation mechanism (7) is used for dissipating heat on the surface of the transformer box (2).

2. The self-cooling transformer according to claim 1, characterized in that: The first heat dissipation mechanism (6) further comprises a delivery pump (64), wherein the delivery pump (64) is arranged at the middle of the upper end of the mounting frame (4), the input end of the delivery pump (64) is electrically connected to the output end of the external control switch, the water inlet of the delivery pump (64) is connected to the interior of the transformer box (2), and the water outlet of the delivery pump (64) is connected to the interior of the vertically adjacent mounting frame (4).

3. The self-cooling transformer according to claim 1, characterized in that: The first heat dissipation mechanism (6) further comprises a heat dissipation fan (65), and air guide tubes are provided in the middle of both front and rear sides of the upper end of the base (1), and the heat dissipation fans (65) are arranged at the lower end of the inner part of the air guide tubes, and the input end of the heat dissipation fan (65) is electrically connected to the output end of the external control switch.

4. The self-cooling transformer according to claim 1, characterized in that: The first heat dissipation mechanism (6) further comprises a temperature sensor (66), wherein the temperature sensor (66) is respectively arranged at the middle of the front and rear inner walls of the transformer box (2), and the temperature sensor (66) is bidirectionally electrically connected to an external control switch.

5. The self-cooling transformer according to claim 1, characterized in that: The second heat dissipation mechanism (7) comprises a movable frame (71), a screw rod (72) and a nozzle (73); the movable frame (71) is slidably connected to the middle of the outer surface of the sliding column (3); the screw rod (72) is rotatably connected to the middle of the left and right sides of the transformer box (2); the outer surface of the screw rod (72) is connected to the inner middle thread of the vertically adjacent movable frame (71); the nozzle (73) is evenly arranged on one side of the movable frame (71) close to the middle of the transformer box (2); the nozzle (73) is connected to the inside of the vertically adjacent movable frame (71); the left and right sides of the transformer box (2) are provided with evenly distributed heat dissipation fins (8); the nozzles (73) are staggered in front and back with the vertically adjacent heat dissipation fins (8).

6. The self-cooling transformer according to claim 5, characterized in that: The second heat dissipation mechanism (7) further comprises a second movable frame (74), a second nozzle (75), a rack plate (76) and a gear (77). The middle parts of the left and right inner walls of the base (1) are provided with a slide groove. The second movable frame (74) is slidably connected to the middle of the interior of the base (1) through the slide groove. The second nozzle (75) is evenly arranged at the upper end of the second movable frame (74). The second nozzle (75) is connected to the interior of the second movable frame (74). The lower end of the transformer box (2) is provided with two evenly distributed heat dissipation fins (9). The second nozzles (75) are staggered with the heat dissipation fins (9) adjacent to each other in the longitudinal direction. The rack plate (76) is arranged at the upper right end of the second movable frame (74). The gear (77) is arranged at the lower end of the outer surface of the first screw rod (72) on the right side. The gear (77) is meshedly connected with the rack plate (76).

7. The self-cooling transformer according to claim 6, characterized in that: The second heat dissipation mechanism (7) further comprises a motor (78), wherein the motor (78) is respectively arranged at the middle of the left and right sides of the upper end of the transformer box (2), the input end of the motor (78) is electrically connected to the output end of the external control switch, and the lower end of the output shaft of the motor (78) is fixedly connected to the upper end of the vertically adjacent screw rod 1 (72).

8. The self-cooling transformer according to claim 5, characterized in that: The second heat dissipation mechanism (7) further comprises a transmission assembly (79), the transmission assembly (79) comprising a screw rod 2 (791), a pulley 1 (792) and a pulley 2 (793); the screw rod 2 (791) is rotatably connected between the right side of the lower end of the mounting frame (4) and the right side of the upper end of the base (1); the outer surface of the screw rod 2 (791) is connected to the inner middle thread of the movable frame 1 (71) on the right side; the thread lead angle of the screw rod 2 (791) is greater than the static friction angle; the pulley 1 (792) is arranged at the lower end of the outer surface of the screw rod 2 (791); the pulley 2 (793) is fixedly sleeved on the middle part of the outer surface of the rotating end of the rotating joint (61) below; the diameter of the pulley 1 (792) is smaller than the diameter of the pulley 2 (793); the pulley 2 (793) is connected to the pulley 1 (792) adjacent to the pulley 1 (792) via a belt.

9. The self-cooling transformer according to claim 1, characterized in that: It also includes an iron core (10), a winding (11), a low-voltage insulating bushing (12), and a high-voltage insulating bushing (13); the iron core (10) is arranged in the middle of the transformer box (2); the windings (11) are all wound around the middle of the outer surface of the iron core (10); the low-voltage insulating bushings (12) are all arranged on the right side of the upper end of the transformer box (2); and the high-voltage insulating bushings (13) are all arranged on the left side of the upper end of the transformer box (2).

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