A three-phase autotransformer

Abstract

The present invention relates to the technical field of transformers, and discloses a three-phase auto-coupling power transformer, including a three-phase auto-coupling transformer, three groups of transformer shells are arranged in the middle position of the three-phase auto-coupling transformer, six groups of fixing frames are fixedly arranged on the upper and lower sides of the three-phase auto-coupling transformer near the front and rear ends, driving components are arranged on the front and upper and lower sides of the three groups of transformer shells, three groups of cooling components are arranged on the inner side of the driving component near the outer side of the three groups of transformer shells, and the driving component includes three groups of upper cooling liquid shells arranged on the upper side of the three groups of transformer shells corresponding to the lower end positions of the four groups of fixing frames. The three-phase auto-coupling power transformer described in the present invention realizes the purpose of driving the cooling component and completing the work of changing different cooling effects through overall coordinated use, while avoiding being wrapped in the outer position of the transformer shell all the time, affecting normal natural heat dissipation.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a three-phase auto-coupling power transformer. Background Art

[0002] The three-phase autotransformer is a kind of autotransformer, which can have the same connection group as the three-phase transformer, but there is an electrical connection between the coils. It is mainly used in high-power transmission and transformation occasions.

[0003] As disclosed in the public document: CN118588407A, an energy-saving dry-type transformer belongs to the technical field of transformers. An energy-saving dry-type transformer comprises: a base and a transformer body; characterized in that: the energy-saving dry-type transformer also comprises: a water inlet ring, fixedly connected to the transformer body; a first cooling pipe, connected to the water inlet ring; a second cooling pipe, connected to the water inlet ring; a third cooling pipe, connected to the water inlet ring; a first opening and closing member, installed in the first cooling pipe; a first transmission assembly, used to drive the opening and closing of the first opening and closing member; the first transmission assembly and the second transmission assembly are installed on the first push plate; the first transmission assembly comprises a first self-rotating member; the first transmission assembly and the second transmission assembly are transmitted in sequence through the first self-rotating member; the third transmission assembly is installed on the second push plate. The beneficial effect of the present application is to provide an energy-saving dry-type transformer with better heat dissipation effect.

[0004] In the above device, three groups of spiral cooling tubes are attached to the outside of the transformer to absorb heat and reduce the temperature. However, the three groups of spiral cooling tubes will be used one by one according to the temperature of the transformer. When the temperature of the transformer is not high, a single spiral cooling tube will be opened, and the other spiral tubes will be wrapped around the outside of the transformer, resulting in a lower natural heat dissipation effect at this position. Summary of the invention

[0005] The main purpose of the present invention is to provide a three-phase autotransformer which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A three-phase autotransformer comprises a three-phase autotransformer, wherein three sets of transformer housings are arranged in the middle of the three-phase autotransformer, six sets of fixing frames are fixedly arranged on the upper and lower sides of the three-phase autotransformer near the front and rear ends, driving components are arranged on the front and upper and lower sides of the three sets of transformer housings, three sets of cooling components are arranged on the inner side of the driving components near the outer sides of the three sets of transformer housings, the driving components comprise three sets of upper cooling liquid shells arranged on the upper sides of the three sets of transformer housings respectively corresponding to the lower end positions of the four fixing frames, and the lower end of the upper cooling liquid shell is fixedly arranged A fixing ring is provided on which three groups of separating water ring shells are arranged, and a branch pipe is fixedly arranged at one end of the inner side of the three groups of separating water ring shells, and electric water valves are fixedly arranged on the upper two groups of the three groups of branch pipes, and a connecting pipe is fixedly arranged on one side of the three groups of branch pipes, and three groups of lower coolant shells are arranged at the upper end positions of the four groups of fixing frames corresponding to the lower sides of the three groups of transformer casings, and an annular shell is fixedly arranged on the upper end of the lower coolant shell, and two groups of limiting rings are fixedly arranged on the outer sides of the fixing ring and the annular shell, and three groups of mounting plates are fixedly arranged between the three groups of upper coolant shells and the three groups of lower coolant shells corresponding to the lower sides.

[0008] Preferably, a water pump is fixedly arranged at the front end of one of the three groups of mounting plates, a round tube is fixedly arranged at the water inlet and outlet ends of the water pump, and water guide pipes are fixedly arranged on the upper and lower sides of the round tube; two groups of motors are fixedly arranged at the front end of one of the three groups of mounting plates close to the edge, gears are fixedly arranged at the rear ends of the rotating shafts of the two groups of motors, sliding sleeves are fixedly arranged at the rear ends of the three groups of mounting plates near the two groups of gears, two groups of long racks are slidably arranged in the sliding sleeves arranged at the rear ends of the three groups of mounting plates, short racks are fixedly arranged at the positions near the gears at the opposite ends of the two groups of long racks, and temperature detectors are fixedly arranged on one side of the three groups of upper coolant shells.

[0009] Preferably, the cooling component includes two groups of fixed disks fixedly arranged on the outside of the fixed ring and the annular shell, movable disks are rotatably arranged at positions of the fixed ring and the outside of the annular shell corresponding to the two groups of limit rings, arc-shaped racks are fixedly arranged at the front ends of the two groups of movable disks, a plurality of groups of cooling tube 1s are fixedly arranged between the two groups of fixed disks, the cooling tube 1s are fitted with the fixed frame, a plurality of groups of cooling tube 2s are movably arranged on the inside of the two groups of fixed disks near the outside of the cooling tube 1s, a plurality of groups of cooling tube 3s are movably arranged on the inside of the two groups of fixed disks near the outside of the cooling tube 2s, and the inner sides of the two groups of fixed disks are opposite to each other. The positions of several groups of cooling tubes two are provided with small arc openings, the positions of several groups of cooling tubes three are provided with large arc openings on the inner sides of the two groups of fixed disks corresponding to the positions of several groups of cooling tubes two and three, the positions of several groups of cooling tubes three are provided with driving openings on the inner sides of the two groups of movable disks corresponding to the positions, sliding grooves are provided at the corners of several groups of driving openings on the inner side of the movable disk, a sliding block is slidably arranged on the inner side of the sliding groove, and fixed blocks are fixedly arranged on the upper and lower ends of the sliding block, two groups of fixing nails are fixedly arranged on the upper and lower ends of the movable disk near the front and rear sides of the fixed block, and elastic ropes are covered on the two groups of fixing nails on the front and rear sides of the fixed block.

[0010] Preferably, the upper coolant shell is fixedly connected to the upper fixing frame of the three-phase autotransformer, the two groups of the electric water valves are electrically connected to the external control end, the connecting pipe is fixedly connected to the upper coolant shell, the three groups of the lower coolant shells are fixedly connected to the lower fixing frame of the three-phase autotransformer, and the annular shell is communicated with the interior of the lower coolant shell.

[0011] Preferably, the water pump and the motor are electrically connected to an external control terminal, and the two groups of water pipes are fixedly connected to three groups of upper coolant shells and lower coolant shells respectively.

[0012] Preferably, the gear is meshed with the short rack, the two groups of long racks are respectively arranged to slide in three groups of sliding sleeves on the upper and lower sides, and the temperature detector is electrically connected to the external control terminal.

[0013] Preferably, the two groups of fixed disks and movable disks are respectively located at the upper and lower sides of the fixed frame, the movable disk is located at the rotation of the two groups of limit rings, the two groups of movable disks are located at the upper and lower sides of the two groups of fixed disks, the arc-shaped rack is meshed with the long rack, the lengths of cooling tube one, cooling tube two, and cooling tube three gradually increase, and hoses are provided at the upper and lower ends of cooling tube one, cooling tube two, and cooling tube three. The lower side hoses of cooling tube one, cooling tube two, and cooling tube three are fixedly connected to the annular shell, the upper side hoses of cooling tube one, cooling tube two, and cooling tube three are respectively fixedly connected to the three groups of separating water ring shells, and cooling tube two and cooling tube three are respectively connected to the middle and uppermost separating water ring shells.

[0014] Preferably, the upper and lower sides of cooling tube 2 pass through the small arc-shaped openings in the two groups of fixed disks to the inner sides of the two groups of driving openings, and the upper and lower sides of cooling tube 3 pass through the large arc-shaped openings in the two groups of fixed disks to the inner sides of the two groups of driving openings. The small arc-shaped openings and the large arc-shaped openings are different in length. The driving openings are adapted to cooling tube 2 and cooling tube 3. The two groups of elastic ropes are respectively arranged on the front and rear sides of the fixed blocks for restriction.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The coolant in the three groups of lower coolant shells is extracted into the three groups of upper coolant shells through water pumps, round pipes and water guide pipes. The coolant in the upper coolant shells naturally enters the connecting pipe and flows to the lowest branch pipe and the separating water ring shell. The cooling work is performed in cooperation with several groups of cooling pipes 1 in the three groups of cooling components. If the temperature of the three-phase autotransformer is detected to rise to a certain value through the temperature detector, the electric water valve on the middle branch pipe is opened through the control end at this time, and the coolant will also enter several groups of cooling pipes 2 at the same time. The cooling components are used to fit several groups of cooling pipes 2 on the transformer shell, thereby improving the cooling effect. Similarly, after opening a set of electric water valves on the upper side, cooperate with the cooling component to fit several sets of cooling pipes onto the transformer casing to wrap the transformer casing and further cool the transformer casing. Different degrees of cooling effects are adopted according to actual needs, and the two sets of motors will cooperate with the feedback of the temperature detector and be turned on by the control end to drive the two sets of gears to drive the two meshing short racks respectively, so that the long racks slide along the sleeves. During the movement of the two sets of long racks, the two sets of meshing arc racks will be driven to achieve the purpose of driving the cooling component and complete the change of different cooling effects.

[0017] 2. The two rotating arc-shaped racks drive the two movable disks to rotate counterclockwise locally. Since the cooling tubes 2 and 3 in the two movable disks are arranged in the small arc-shaped opening and the large arc-shaped opening at the same time, the rotation of the movable disks will push the cooling tubes 2 and 3 to slide along the small arc-shaped opening and the large arc-shaped opening respectively through the driving opening, and move toward the center until the cooling tube 2 moves to the corner of the driving opening, and the cooling tube 2 will reach the end close to the center of the small arc-shaped opening. At this time, several groups of cooling tubes 2 are attached to the outside of the transformer casing. With the use of the driving assembly, the electric water valve on the intermediate branch pipe is opened, and the coolant enters several groups of cooling tubes 2. When the movable disk is driven counterclockwise, cooling tube two will remain stationary, and the driving port on the movable disk close to the center direction will be sleeved on the outside of cooling tube two, while cooling tube three will be pushed to the corner of the driving port by the movable disk. At the same time, cooling tube three is located at one end of the large arc-shaped port close to the center. Several groups of cooling tube three are attached to the outside of the transformer casing for cyclic heat absorption and cooling. When the movable disk is rotated in the opposite direction, several groups of cooling tube three and cooling tube three will leave the surface of the transformer casing one by one. When not in use, they can avoid being wrapped on the outside of the transformer casing, which affects the normal natural heat dissipation.

[0018] 3. When cooling tube 2 and cooling tube 3 move to the corner of the driving port, the slider will present a lateral resistance to them, pressing against the outer surfaces of cooling tube 2 and cooling tube 3, so that they can be stably fitted on the surface of the transformer casing, while cooling tube 2 slides in the slide groove, cooperating with the elastic elastic rope. However, when the movable disk rotates, cooling tube 2 needs to move to the side of the driving port, and the slider will contract to meet the requirement of passing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall internal structure of a three-phase auto-coupling power transformer of the present invention;

[0020] Figure 2 A schematic diagram of the transformer structure of a three-phase auto-coupling power transformer of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a driving component and a cooling component of a three-phase auto-coupling power transformer of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a driving component of a three-phase auto-coupling power transformer of the present invention;

[0023] Figure 5 A three-phase auto-coupling power transformer of the present invention Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0024] Figure 6 It is a partial cross-sectional structural schematic diagram of a driving component of a three-phase auto-coupling power transformer of the present invention;

[0025] Figure 7 A three-phase auto-coupling power transformer of the present invention Figure 6 The enlarged structural diagram of the middle B part;

[0026] Figure 8 It is a schematic structural diagram of a cooling component of a three-phase autotransformer of the present invention;

[0027] Fig. 9 It is a partial cross-sectional structural schematic diagram of a cooling component of a three-phase autotransformer according to the present invention;

[0028] Fig.10 A three-phase auto-coupling power transformer of the present invention Fig. 9 Schematic diagram of the enlarged structure of part C in the middle.

[0029] In the figure: 1, three-phase autotransformer; 2, transformer housing; 3, fixing frame; 4, driving assembly; 41, upper coolant shell; 42, fixing ring; 43, water ring shell; 44, branch pipe; 45, electric water valve; 46, connecting pipe; 47, lower coolant shell; 48, annular shell; 49, limiting ring; 410, mounting plate; 411, water pump; 412, round pipe; 413, water guide pipe; 414, motor; 415, gear; 416. Sliding sleeve; 417. Long rack; 418. Short rack; 419. Temperature detector; 5. Cooling assembly; 51. Fixed disk; 52. Movable disk; 53. Arc rack; 54. Cooling tube one; 55. Cooling tube two; 56. Cooling tube three; 57. Small arc opening; 58. Large arc opening; 59. Driving opening; 510. Slide groove; 511. Sliding block; 512. Fixed block; 513. Fixed nail; 514. Elastic rope. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] See also Figure 1-Figure 10The present invention provides an embodiment: a three-phase autotransformer, comprising a three-phase autotransformer 1, three sets of transformer housings 2 are arranged in the middle of the three-phase autotransformer 1, six sets of fixing frames 3 are fixedly arranged on the upper and lower sides of the three-phase autotransformer 1 near the front and rear ends, driving components 4 are arranged on the front and upper and lower sides of the three sets of transformer housings 2, three sets of cooling components 5 are arranged on the inner side of the driving components 4 near the outer side of the three sets of transformer housings 2, and the driving components 4 include the three sets of transformer housings 2. The upper side corresponds to three groups of upper coolant shells 41 at the lower end of the four groups of fixing frames 3, and the lower end of the upper coolant shell 41 is fixedly provided with a fixing ring 42, and three groups of separation water ring shells 43 are provided on the fixing ring 42. The inner ends of the three groups of separation water ring shells 43 are fixedly provided with branch pipes 44, and the upper two groups of the three groups of branch pipes 44 are fixedly provided with electric water valves 45, and one side of the three groups of branch pipes 44 is fixedly provided with connecting pipes 46. The lower side of the three groups of transformer housings 2 corresponds to the upper end of the four groups of fixing frames 3. The lower end is provided with three groups of lower coolant shells 47 , an annular shell 48 is fixedly provided at the upper end of the lower coolant shell 47, two sets of limit rings 49 are fixedly provided on the outer sides of the fixing ring 42 and the annular shell 48, three sets of mounting plates 410 are fixedly provided between the three sets of upper coolant shells 41 and the three sets of lower coolant shells 47 corresponding to the lower side, a water pump 411 is fixedly provided at the front end of one of the three sets of mounting plates 410, a round pipe 412 is fixedly provided at the water inlet and outlet ends of the water pump 411, and a water guide pipe 413 is fixedly provided on the upper and lower sides of the round pipe 412, and the three sets of mounting plates 410 near the edge Two motors 414 are fixedly arranged at the front end of one group, gears 415 are fixedly arranged at the rear ends of the rotating shafts of the two motors 414, sleeves 416 are fixedly arranged at the rear ends of the three mounting plates 410 near the two gears 415, two long racks 417 are slidably arranged in the sleeves 416 arranged at the rear ends of the three mounting plates 410, short racks 418 are fixedly arranged at the positions near the gears 415 at the opposite ends of the two long racks 417, and temperature detectors 419 are fixedly arranged at one side of the three upper coolant shells 41.

[0033] The upper coolant shell 41 is fixedly connected to the upper fixing frame 3 of the three-phase autotransformer 1, two sets of electric water valves 45 are electrically connected to the external control end, the connecting pipe 46 is fixedly connected to the upper coolant shell 41, three sets of lower coolant shells 47 are fixedly connected to the lower fixing frame 3 of the three-phase autotransformer 1, the annular shell 48 is communicated with the interior of the lower coolant shell 47, the water pump 411 and the motor 414 are electrically connected to the external control end, the two sets of water pipes 413 are respectively fixedly connected to the upper and lower three sets of upper coolant shells 41 and lower coolant shells 47, the gear 415 is meshed with the short rack 418, the two sets of long racks 417 are respectively set in the three sets of sliding sleeves 416 on the upper and lower sides to slide, and the temperature detector 419 is electrically connected to the external control end.

[0034] The coolant in the three groups of lower coolant shells 47 is extracted into the three groups of upper coolant shells 41 through the water pump 411, the round pipe 412, and the water guide pipe 413. The coolant in the upper coolant shell 41 naturally enters the connecting pipe 46 and flows to the lowest branch pipe 44 and the separating water ring shell 43, and cooperates with the several groups of cooling pipes 1 54 in the three groups of cooling components 5 to perform cooling work. If the temperature of the three-phase autotransformer 1 is detected to rise to a certain value through the temperature detector 419, the electric water valve 45 on the middle branch pipe 44 is opened through the control end at this time, and the coolant will also enter the several groups of cooling pipes 2 55 at the same time, and cooperate with the cooling component 5 to make the several groups of cooling pipes 2 55 fit on the transformer housing 2, thereby improving the cooling effect. Similarly, after opening a group of electric water valves 45 on the upper side, cooperate with the cooling component 5 to fit several groups of cooling pipes 55 on the transformer casing 2 to wrap the transformer casing 2, and further cool the transformer casing 2. Different degrees of cooling effects are adopted according to actual needs, and the two groups of motors 414 will cooperate with the feedback of the temperature detector 419, and be turned on by the control end to drive the two groups of gears 415 to respectively drive the two groups of meshing short racks 418, so that the long rack 417 slides along the sliding sleeve 416, and during the movement of the two groups of long racks 417, the two groups of meshing arc racks 53 will be driven to achieve the purpose of driving the cooling component 5 and complete the change of different cooling effects.

[0035] The cooling component 5 includes two groups of fixed disks 51 fixedly arranged on the outside of the fixed ring 42 and the annular shell 48, and movable disks 52 are rotatably arranged at the positions of the two groups of limit rings 49 on the outside of the fixed ring 42 and the annular shell 48. The front ends of the two groups of movable disks 52 are fixedly arranged with arc-shaped racks 53. Several groups of cooling pipes 1 54 are fixedly arranged between the two groups of fixed disks 51. The cooling pipes 1 54 are fitted with the fixed frame 3. Several groups of cooling pipes 2 55 are movably arranged on the inside of the two groups of fixed disks 51 near the outside of the cooling pipes 1 54. Several groups of cooling pipes 3 56 are movably arranged on the inside of the two groups of fixed disks 51 near the outside of the cooling pipes 2 55. The insides of the two groups of fixed disks 51 correspond to several groups of cooling pipes 2 55. Small arc openings 57 are provided at the positions thereof, large arc openings 58 are provided at the positions of the groups of cooling tube three 56 corresponding to the inner sides of the two groups of fixed disks 51, driving openings 59 are provided at the positions of the groups of cooling tube two 55 and cooling tube three 56 corresponding to the inner sides of the two groups of movable disks 52, sliding grooves 510 are provided at the corners of the groups of driving openings 59 corresponding to the inner sides of the movable disk 52, sliding blocks 511 are slidably provided at the inner sides of the sliding grooves 510, and fixing blocks 512 are fixedly provided at the upper and lower ends of the sliding blocks 511, two groups of fixing nails 513 are fixedly provided at the upper and lower ends of the movable disk 52 near the front and rear sides of the fixing block 512, and elastic ropes 514 are sleeved on the two groups of fixing nails 513 at the front and rear sides of the fixing block 512.

[0036] The two groups of fixed disks 51 and the movable disk 52 are respectively located at the upper and lower sides of the fixed frame 3, the movable disk 52 is located at the two groups of limit rings 49 for rotation, the two groups of movable disks 52 are located at the upper and lower sides of the two groups of fixed disks 51, the arc-shaped rack 53 is meshed with the long rack 417, the lengths of the cooling pipe 1 54, the cooling pipe 2 55, and the cooling pipe 3 56 are gradually increased, and the upper and lower ends of the cooling pipe 1 54, the cooling pipe 2 55, and the cooling pipe 3 56 are all provided with hoses, and the lower side hoses of the cooling pipe 1 54, the cooling pipe 2 55, and the cooling pipe 3 56 are fixedly connected to the annular shell 48, and the cooling pipe 1 54, the cooling pipe 2 55, and the cooling pipe 3 56 are fixedly connected to the annular shell 48. The upper hose is fixedly connected to the three groups of water ring shells 43, respectively. The cooling pipe 2 55 and the cooling pipe 3 56 are connected to the middle and uppermost water ring shells 43, respectively. The upper and lower sides of the cooling pipe 2 55 pass through the small arc-shaped openings 57 in the two groups of fixed disks 51 to the inner sides of the two groups of driving openings 59. The upper and lower sides of the cooling pipe 3 56 pass through the large arc-shaped openings 58 in the two groups of fixed disks 51 to the inner sides of the two groups of driving openings 59. The small arc-shaped openings 57 and the large arc-shaped openings 58 are of different lengths. The driving openings 59 are adapted to the cooling pipe 2 55 and the cooling pipe 3 56. The two groups of elastic ropes 514 are respectively set at the front and rear sides of the fixed block 512 for restriction.

[0037] The two rotating arc-shaped racks 53 drive the two movable disks 52 to rotate partially counterclockwise. Since the cooling tubes 2 55 and 3 56 in the two movable disks 52 are arranged in the small arc-shaped opening 57 and the large arc-shaped opening 58 at the same time, the rotation of the movable disk 52 will push the cooling tubes 2 55 and 3 56 to slide along the small arc-shaped opening 57 and the large arc-shaped opening 58 respectively through the driving opening 59 and move toward the center until the cooling tube 2 55 moves to the corner of the driving opening 59, and the cooling tube 2 55 will reach the end near the center of the small arc-shaped opening 57. At this time, several groups of cooling pipes 55 are attached to the outer side of the transformer housing 2. With the use of the driving component 4, the electric water valve 45 on the middle branch pipe 44 is opened, and the coolant enters several groups of cooling pipes 55 and then is discharged into the annular shell 48 on the lower side to perform circulation work. When the movable disk 52 is driven counterclockwise again, the cooling pipe 55 will remain stationary, and the driving opening 59 on the movable disk 52 near the center direction will be sheathed on the cooling pipe 55. 5, and the cooling tube three 56 will be pushed to the corner of the driving opening 59 by the movable disk 52, and the cooling tube three 56 is located at one end of the large arc opening 58 close to the center, and several groups of cooling tube three 56 are attached to the outer side of the transformer housing 2 for circulating heat absorption and cooling, and the reverse rotation of the movable disk 52 will make several groups of cooling tube three 56 and cooling tube three 56 leave the surface of the transformer housing 2 one by one, and avoid being wrapped on the outer side of the transformer housing 2 when not in use, which affects the normal natural heat dissipation; in addition, when the cooling tube two 55 and cooling tube three 56 move to the corner of the driving opening 59, the slider 511 will present a lateral resistance to them, pressing on the outer surface of the cooling tube two 55 and cooling tube three 56, so that it is stable in the attachment to the surface of the transformer housing 2, and the cooling tube two 55 slides in the slide groove 510, cooperating with the elastic elastic rope 514, but when the movable disk 52 rotates, the cooling tube two 55 needs to move to the side of the driving opening 59, and the slider 511 will shrink to meet the passing.

[0038] Working principle: When in use, the coolant in the three groups of lower coolant shells 47 is extracted into the three groups of upper coolant shells 41 through the water pump 411, the round pipe 412, and the water guide pipe 413. The coolant in the upper coolant shell 41 naturally enters the connecting pipe 46 and flows to the lowest branch pipe 44 and the separating water ring shell 43, and cooperates with the several groups of cooling pipes 1 54 in the three groups of cooling components 5 to perform cooling work. If the temperature of the three-phase autotransformer 1 is detected to rise to a certain value through the temperature detector 419, the electric water valve 45 on the middle branch pipe 44 is opened through the control end at this time, and the coolant will also enter the several groups of cooling pipes 2 55 at the same time, and cooperate with the cooling component 5 to make the several groups of cooling pipes 2 55 fit on the transformer housing 2, thereby improving the cooling effect. Similarly, after opening the upper set of electric water valves 45, cooperate with the cooling component 5 to fit several sets of cooling pipes 55 on the transformer housing 2 to wrap the transformer housing 2, and further cool the transformer housing 2. Different degrees of cooling effects are adopted according to actual needs, and the two sets of motors 414 will cooperate with the feedback of the temperature detector 419, and be turned on by the control end to drive the two sets of gears 415 to respectively drive the two meshing short racks 418, so that the long racks 417 slide along the sliding sleeve 416. During the movement of the two sets of long racks 417, the two sets of meshing arc racks 53 will be driven to achieve the purpose of driving the cooling component 5 and complete the change of different cooling effects; and the two sets of rotating arc racks 5 3 drives the two groups of movable disks 52 to rotate counterclockwise locally. Since the cooling tubes 2 55 and 3 56 in the two groups of movable disks 52 are simultaneously arranged in the small arc opening 57 and the large arc opening 58, the rotation of the movable disk 52 will push the cooling tubes 2 55 and 3 56 to slide along the small arc opening 57 and the large arc opening 58 respectively through the driving opening 59, and move toward the center until the cooling tube 2 55 moves to the corner of the driving opening 59, and the cooling tube 2 55 will reach the end near the center of the small arc opening 57. At this time, several groups of cooling tubes 2 55 are attached to the outside of the transformer housing 2. With the use of the driving assembly 4, the electric water valve 45 on the intermediate branch pipe 44 is opened, and the coolant enters several groups of cooling tubes 2 55, and then The cooling tube 2 55 is arranged in the annular shell 48 on the lower side for circulation work. When the movable disk 52 is driven counterclockwise, the cooling tube 2 55 will remain stationary, and the driving port 59 on the movable disk 52 near the center direction will be sleeved on the outside of the cooling tube 2 55, and the cooling tube 3 56 will be pushed to the corner position of the driving port 59 by the movable disk 52. At the same time, the cooling tube 3 56 is located at one end of the large arc-shaped port 58 near the center. Several groups of cooling tubes 3 56 are attached to the outside of the transformer housing 2 for circulation heat absorption and cooling. When the movable disk 52 is rotated in the opposite direction, several groups of cooling tubes 3 56 and cooling tubes 3 56 will leave the surface of the transformer housing 2 one by one. When not in use, they are prevented from being wrapped on the outside of the transformer housing 2 to affect normal natural heat dissipation.In addition, when the cooling tube 2 55 and the cooling tube 3 56 move to the corner of the driving port 59, the slider 511 will present a lateral resistance to them, pressing against the outer surface of the cooling tube 2 55 and the cooling tube 3 56, so that they are stably attached to the surface of the transformer housing 2, and the cooling tube 2 55 slides in the slide groove 510, cooperating with the elastic elastic rope 514, but when the movable disk 52 rotates, the cooling tube 2 55 needs to move to the side of the driving port 59, and the slider 511 will shrink to meet the passing. ;

[0039] The three-phase autotransformer 1, transformer housing 2, electric water valve 45, water pump 411, motor 414, and temperature detector 419 in the present invention are common knowledge in the field, and their working principles are already well-known technologies. Suitable models can be selected according to actual use, so they will not be explained in detail.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-phase autotransformer, comprising a three-phase autotransformer (1), characterized in that: Three sets of transformer housings (2) are arranged at the middle position of the three-phase autotransformer (1); six sets of fixing frames (3) are fixedly arranged at the upper and lower sides of the three-phase autotransformer (1) near the front and rear ends; driving components (4) are arranged at the front and upper and lower sides of the three sets of transformer housings (2); three sets of cooling components (5) are arranged at the inner side of the driving components (4) near the outer side of the three sets of transformer housings (2); the driving components (4) include three sets of upper cooling liquid shells (41) arranged at the upper sides of the three sets of transformer housings (2) and corresponding to the lower ends of the four fixing frames (3); a fixing ring (42) is fixedly arranged at the lower end of the upper cooling liquid shell (41); and three sets of separation water ring shells are arranged on the fixing ring (42). (43), a branch pipe (44) is fixedly provided at one end of the inner side of the three groups of water separation ring shells (43), an electric water valve (45) is fixedly provided on the upper two groups of the three groups of branch pipes (44), a connecting pipe (46) is fixedly provided on one side of the three groups of branch pipes (44), three groups of lower coolant shells (47) are provided at the upper end positions of the four groups of fixing frames (3) corresponding to the lower sides of the three groups of transformer shells (2), an annular shell (48) is fixedly provided at the upper end of the lower coolant shells (47), two groups of limiting rings (49) are fixedly provided on the outer sides of the fixing rings (42) and the annular shells (48), and three groups of mounting plates (410) are fixedly provided between the three groups of upper coolant shells (41) and the three groups of lower coolant shells (47) corresponding to the lower sides; A water pump (411) is fixedly arranged at the front end of one of the three groups of mounting plates (410), a round tube (412) is fixedly arranged at the water inlet and outlet ends of the water pump (411), and water guide pipes (413) are fixedly arranged on the upper and lower sides of the round tube (412); two groups of motors (414) are fixedly arranged at the front end of one of the three groups of mounting plates (410) close to the edge, and gears (415) are fixedly arranged at the rear ends of the rotating shafts of the two groups of motors (414); a sliding sleeve (416) is fixedly arranged at the rear ends of the three groups of mounting plates (410) close to the two groups of gears (415); two groups of long racks (417) are slidably arranged in the sliding sleeves (416) arranged at the rear ends of the three groups of mounting plates (410), and short racks (418) are fixedly arranged at the positions of the opposite ends of the two groups of long racks (417) close to the gears (415); and a temperature detector (419) is fixedly arranged at one side of the three groups of upper cooling liquid shells (41); The cooling component (5) comprises two groups of fixed disks (51) fixedly arranged on the outside of the fixed ring (42) and the annular shell (48); movable disks (52) are rotatably arranged at positions corresponding to the two groups of limit rings (49) on the outside of the fixed ring (42) and the annular shell (48); arc-shaped racks (53) are fixedly arranged at the front ends of the two groups of movable disks (52); a plurality of groups of cooling pipes (54) are fixedly arranged between the two groups of fixed disks (51); the cooling pipes (54) are fitted with the fixed frame (3); a plurality of groups of cooling pipes (55) are movably arranged on the outside of the cooling pipes (54) on the inner sides of the two groups of fixed disks (51); a plurality of groups of cooling pipes (56) are movably arranged on the outside of the cooling pipes (55) on the inner sides of the two groups of fixed disks (51); and a plurality of groups of cooling pipes (57) are movably arranged on the inside of the two groups of fixed disks (51) corresponding to the plurality of groups of cooling pipes (57) on the inner sides of the two groups of fixed disks (51). 5) are provided with a small arc-shaped opening (57), the inner sides of the two groups of fixed disks (51) are provided with a large arc-shaped opening (58) at positions corresponding to the plurality of groups of cooling tube three (56), the inner sides of the two groups of movable disks (52) are provided with a driving opening (59) at positions corresponding to the plurality of groups of cooling tube two (55) and cooling tube three (56), the inner sides of the movable disks (52) are provided with a sliding groove (510) at a corner corresponding to the plurality of groups of driving openings (59), the inner side of the movable disks (52) are provided with a sliding block (511) for sliding movement inside the sliding groove (510), the upper and lower ends of the sliding block (511) are fixedly provided with a fixing block (512), the upper and lower ends of the movable disks (52) are fixedly provided with two groups of fixing nails (513) near the front and rear sides of the fixing block (512), and the two groups of fixing nails (513) on the front and rear sides of the fixing block (512) are covered with elastic ropes (514).

2. A three-phase autotransformer according to claim 1, characterized in that: The three groups of upper cooling liquid shells (41) are fixedly connected to the upper fixing frame (3) of the three-phase autotransformer (1), the two groups of electric water valves (45) are electrically connected to the external control end, the connecting pipe (46) is fixedly connected to the upper cooling liquid shell (41), the three groups of lower cooling liquid shells (47) are fixedly connected to the lower fixing frame (3) of the three-phase autotransformer (1), and the annular shell (48) is communicated with the interior of the lower cooling liquid shell (47).

3. A three-phase autotransformer according to claim 1, characterized in that: The water pump (411) and the motor (414) are electrically connected to an external control terminal, and the two groups of water pipes (413) are respectively fixedly connected to the upper and lower three groups of upper cooling liquid shells (41) and lower cooling liquid shells (47).

4. A three-phase autotransformer according to claim 1, characterized in that: The gear (415) is meshed with the short rack (418), the two groups of long racks (417) are respectively arranged to slide in three groups of sliding sleeves (416) on the upper and lower sides, and the temperature detector (419) is electrically connected to an external control terminal.

5. A three-phase autotransformer according to claim 1, characterized in that: The two groups of fixed disks (51) and movable disks (52) are respectively located at the upper and lower sides of the fixed frame (3); the movable disks (52) are located at the two groups of limit rings (49) for rotation; the two groups of movable disks (52) are located at the upper and lower sides of the two groups of fixed disks (51); the arc-shaped racks (53) are meshed with the long racks (417); the lengths of the cooling tubes 1 (54), 2 (55), and 3 (56) gradually increase; the cooling tubes 1 (54), 2 (55), and 3 (56) are gradually increased ... 5) The upper and lower ends of cooling tube three (56) are provided with hoses, the lower hoses of cooling tube one (54), cooling tube two (55) and cooling tube three (56) are fixedly connected to the annular shell (48), the upper hoses of cooling tube one (54), cooling tube two (55) and cooling tube three (56) are respectively fixedly connected to three groups of partition water annular shells (43), and cooling tube two (55) and cooling tube three (56) are respectively connected to the middle and uppermost partition water annular shells (43).

6. A three-phase autotransformer according to claim 1, characterized in that: The upper and lower sides of the cooling tube 2 (55) pass through the small arc-shaped openings (57) in the two groups of fixed plates (51) to the inner sides of the two groups of driving openings (59), and the upper and lower sides of the cooling tube 3 (56) pass through the large arc-shaped openings (58) in the two groups of fixed plates (51) to the inner sides of the two groups of driving openings (59). The small arc-shaped openings (57) and the large arc-shaped openings (58) have different lengths. The driving openings (59) are compatible with the cooling tube 2 (55) and the cooling tube 3 (56). The two groups of elastic ropes (514) are respectively set on the front and rear sides of the fixed block (512) for restriction.

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