Dry-type transformer capable of preventing coil from loosening

Abstract

The invention discloses a dry-type transformer capable of preventing coil loosening, which comprises two supporting seats, two connecting plates fixedly connected between the two supporting seats, two iron cores and two coil windings arranged between the two supporting seats, the two coil windings respectively sleeve the two iron cores, and the two coil windings are connected with the two connecting plates. The opposite sides of the two supporting seats are each rotationally connected with two rotating rings, one sides of the four rotating rings are each provided with an annular groove, and the inner walls of the four annular grooves are each fixedly connected with a trapezoidal block which is annularly distributed. According to the coil winding clamping device, a coil winding can be clamped in multiple directions in the transverse direction, the situation that the coil winding deforms in the transverse direction is effectively reduced, then the effect of loosening the coil winding is effectively improved, and a structure used for clamping the coil winding can be disassembled very conveniently and rapidly; and therefore, a user can maintain the coil winding conveniently, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of dry-type transformers, in particular to a dry-type transformer capable of preventing coils from loosening. Background Art

[0002] A dry-type transformer is a transformer whose core and windings are not immersed in insulating oil. During the operation of a dry-type transformer, due to the influence of electromagnetic force, vibration, thermal expansion and contraction, its coil may become loose, which will affect the performance of the transformer, reduce efficiency and may even cause failure.

[0003] Setting a coil loosening prevention mechanism on the dry-type transformer can effectively prevent the coil from loosening, which may affect the performance of the transformer, reduce efficiency, and even cause malfunctions. The common coil loosening prevention mechanism applies downward pressure to the top of the coil winding, so that the coil winding shrinks after being compressed and finally returns to a tightly wound state. This method can only control the deformation in the vertical direction when in use to achieve the effect of preventing the coil from loosening. During the use of the dry-type transformer, the coil winding is also prone to deformation in the horizontal direction. The common coil loosening prevention mechanism is not ideal in use and may even aggravate the loosening of the coil. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a dry-type transformer that can prevent coil loosening, effectively reduce the deformation of the coil winding in the lateral direction, and improve the effect of preventing the coil winding from loosening.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: A dry-type transformer for preventing coil loosening, comprising two support seats, two connecting plates fixedly connected between the two support seats, two iron cores and two coil windings installed between the two support seats, the two coil windings are respectively sleeved on the two iron cores, two rotating rings are rotatably connected to the opposite sides of the two support seats, one side of the four rotating rings is provided with annular grooves, the inner walls of the four annular grooves are fixedly connected with annularly distributed trapezoidal blocks, the opposite sides of the two support seats are provided with annularly distributed grooves, the outer sides of the two coil windings are provided with annularly distributed clamping plates, the tops and bottoms of the two groups of clamping plates are respectively slidably connected to the inner walls of the four groups of grooves, two sliding rods are fixedly connected to one side of the two groups of clamping plates, one ends of the four groups of sliding rods are respectively located inside the four annular grooves, and a driving mechanism is provided between the two connecting plates.

[0006] As a further description of the above technical solution: The driving mechanism includes two slide grooves, and the two slide grooves are respectively opened on opposite sides of the two support seats, a movable plate is slidably connected between the two slide grooves, a screw rod is rotatably connected between the two connecting plates, a motor is fixedly connected to the back side of the back connecting plate, the output shaft of the motor passes through the back connecting plate and is fixedly connected to the screw rod, the movable plate is sleeved on the screw rod and threadedly connected to the screw rod, the top and bottom of the movable plate are fixedly connected to two racks, and the outer sides of the four rotating rings are provided with gear rings meshing with the racks.

[0007] As a further description of the above technical solution: One end of the slide rod is rotatably connected to a roller, and the outer side of the roller contacts the inner wall of the annular groove.

[0008] As a further description of the above technical solution: A limiting ring is embedded on one side of the support seat, and one side of the limiting ring is fixedly connected to the rotating ring.

[0009] As a further description of the above technical solution: A spring is fixedly connected to the inner wall of the groove, and the other end of the spring is in contact with the clamping plate.

[0010] As a further description of the above technical solution: The clamping plate is provided with a segmented groove, the inner wall of the segmented groove is slidably connected with a connecting block, one side of the connecting block is inserted with two screw rods slidably connected with it, and one end of the two screw rods is inserted into the clamping plate and threadedly connected with it.

[0011] As a further description of the above technical solution: The top and the bottom of the connection block are both fixedly connected with the limiting blocks, and the inner wall of the segmented groove is provided with two limiting grooves which are slidably connected with the limiting blocks.

[0012] As a further description of the above technical solution: The front side of the connecting plate is fixedly connected with a controller, a signal receiver and a signal transmitter.

[0013] Compared with the prior art, the advantages of the present invention are: This solution can perform multi-directional clamping of the coil winding in the lateral direction, effectively reduce the deformation of the coil winding in the lateral direction, and thus effectively improve the effect of loosening the coil winding, and can very conveniently and quickly disassemble the structure used to clamp the coil winding, thereby facilitating the user to maintain the coil winding and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the three-dimensional diagrams of the present invention; Figure 2 This is the second stereogram of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of part A in the middle; Figure 5 This is a diagram showing the position relationship between the trapezoidal block and the slide bar in the present invention.

[0015] Description of the numbers in the figure: 1. Support seat; 2. Connecting plate; 3. Iron core; 4. Coil winding; 5. Rotating ring; 6. Ring groove; 7. Trapezoidal block; 8. Groove; 9. Clamp; 10. Slide rod; 11. Driving mechanism; 111. Slide groove; 112. Moving plate; 113. Screw rod; 114. Motor; 115. Rack; 12. Roller; 13. Limiting ring; 14. Spring; 15. Segmented groove; 16. Connecting block; 17. Screw rod; 18. Limiting block; 19. Limiting groove; 20. Controller; 21. Signal receiver; 22. Signal transmitter. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] See also Figures 1 to 5, the present invention: a dry-type transformer for preventing coil loosening, comprising two support seats 1, two connecting plates 2 are fixedly connected between the two support seats 1, two iron cores 3 and two coil windings 4 are installed between the two support seats 1, the two coil windings 4 are respectively sleeved on the two iron cores 3, two rotating rings 5 ​​are rotatably connected to the opposite side of the two support seats 1, one side of the four rotating rings 5 ​​is provided with an annular groove 6, the inner walls of the four annular grooves 6 are fixedly connected with annularly distributed trapezoidal blocks 7, the opposite side of the two support seats 1 is provided with annularly distributed grooves 8, the outer sides of the two coil windings 4 are provided with annularly distributed clamping plates 9, the tops and bottoms of the two groups of clamping plates 9 are respectively slidably connected to the inner walls of the four groups of grooves 8, one side of the two groups of clamping plates 9 is fixedly connected with two sliding rods 10, one end of the four groups of sliding rods 10 is respectively located at Inside the four annular grooves 6, a driving mechanism 11 is arranged between the two connecting plates 2; a controller 20, a signal receiver 21 and a signal transmitter 22 are fixedly connected to the front of the front connecting plate 2; the driving mechanism 11 includes two slide grooves 111, and the two slide grooves 111 are respectively opened on the opposite sides of the two support seats 1, a moving plate 112 is slidably connected between the two slide grooves 111, a screw rod 113 is rotatably connected between the two connecting plates 2, a motor 114 is fixedly connected to the back of the back connecting plate 2, the output shaft of the motor 114 passes through the back connecting plate 2 and is fixedly connected to the screw rod 113, the moving plate 112 is sleeved on the screw rod 113 and is threadedly connected to it, the top and bottom of the moving plate 112 are fixedly connected to two racks 115, and the outer sides of the four rotating rings 5 ​​are opened with gear rings meshing with the racks 115.

[0018] In the present invention, the connecting plate 2 is used to connect the two supporting seats 1, and the two supporting seats 1 are used to limit the vertical direction of the coil winding 4 to prevent the coil winding 4 from being deformed and loosened in the vertical direction.

[0019] The user turns on the motor 114 to drive the screw rod 113 to rotate. The screw rod 113 is threadedly connected to the moving plate 112. Therefore, after the motor 114 is started, it will drive the moving plate 112 to slide along the slide groove 111. During the movement of the moving plate 112, the rack 115 will move. After the rack 115 moves, it will then drive the rotating ring 5 to rotate through the gear ring provided on the outer side of the rotating ring 5. After the rotating ring 5 rotates, the sliding rod 10 will move relatively in the ring groove 6. The sliding rod 10 will first contact the inclined surface of the trapezoidal block 7. As ... The rod 10 will slide onto the inclined surface of the trapezoidal block 7, and the trapezoidal block 7 will push the sliding rod 10, which will then drive the clamping plate 9 to move. The clamping plate 9 will approach the coil winding 4 along the inner wall of the groove 8 until the clamping plate 9 is in close contact with the coil winding 4, thereby achieving the effect of tightening the coil winding 4. The clamping plate 9 is evenly distributed in a ring shape on the outside of the coil winding 4, and thus can limit the coil winding 4 in multiple lateral directions, effectively avoiding the lateral deformation of the coil winding 4 and reducing the loosening of the coil winding 4.

[0020] The user can send instructions to the signal receiver 21 through the terminal device, and then the controller 20 will start the control motor 114 to open and close, thereby achieving the purpose of remote control to adjust the force of the loosening mechanism of the dry-type transformer coil winding 4, thereby improving the practicality of the device.

[0021] See also Figure 4 , wherein: one end of the slide rod 10 is rotatably connected to a roller 12 , and the outer side of the roller 12 contacts the inner wall of the annular groove 6 .

[0022] In the present invention, the roller 12 rotatably connected to one end of the slide rod 10 can effectively reduce friction, improve the running smoothness of the device, reduce wear and tear, and increase the service life of the device.

[0023] See also Figure 4 , wherein: a limiting ring 13 is embedded on one side of the support seat 1 , and one side of the limiting ring 13 is fixedly connected to the rotating ring 5 .

[0024] In the present invention, the setting of the limiting ring 13 can limit the rotation ring 5, thereby improving the stability of the device.

[0025] See also Figure 4 , wherein: a spring 14 is fixedly connected to the inner wall of the groove 8 , and the other end of the spring 14 is in contact with the clamping plate 9 .

[0026] In the present invention, the setting of the spring 14 allows the slide bar 10 on the clamping plate 9 to always contact the inner wall of the annular groove 6 or the trapezoidal block 7, so that the position of the clamping plate 9 can be better controlled by the motor 114, thereby improving the practicality of the device.

[0027] See also Figure 4, wherein: a segmented groove 15 is opened on the clamping plate 9, and a connecting block 16 is slidably connected to the inner wall of the segmented groove 15, and two screws 17 slidably connected to one side of the connecting block 16 are inserted, and one end of the two screws 17 are inserted into the clamping plate 9 and threadedly connected to it.

[0028] In the present invention, the setting of the segmented groove 15 can divide the splint 9 into two parts, and the connecting block 16 and the screw 17 can connect the splint 9 that is divided into two parts. The user can remove the connecting block 16 by rotating the screw 17. At this time, the splint 9 will be divided into two parts. The user can remove the splint 9 divided into two parts, thereby leaving space for the user to observe the coil winding 4, making it convenient for the user to maintain the coil winding 4, thereby improving the practicality of the device.

[0029] See also Figure 4 , wherein: the top and the bottom of the connecting block 16 are fixedly connected to the limiting block 18 , and the inner wall of the segmented groove 15 is provided with two limiting grooves 19 slidably connected to the limiting block 18 .

[0030] In the present invention, the limiting block 18 and the limiting groove 19 are used together to limit the connection block 16 and the clamping plate 9, which is beneficial to improve the connection stability of the clamping plate 9 after segmentation and maintain the clamping effect of the clamping plate 9 on the coil winding 4.

[0031] The above are only preferred specific implementations of the present invention; however, 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 solutions and improved concepts 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 dry-type transformer for preventing coil loosening, comprising two support bases (1), characterized in that: Two connecting plates (2) are fixedly connected between the two support seats (1), two iron cores (3) and two coil windings (4) are installed between the two support seats (1), and the two coil windings (4) are respectively sleeved on the two iron cores (3). Two rotating rings (5) are rotatably connected to the opposite sides of the two support seats (1), and one side of the four rotating rings (5) is provided with an annular groove (6), and the inner walls of the four annular grooves (6) are fixedly connected with annularly distributed trapezoidal blocks (7), and the opposite sides of the two support seats (1) are provided with annularly distributed grooves (8). The outer sides of the two coil windings (4) are provided with annularly distributed clamping plates (9), and the tops and bottoms of the two groups of clamping plates (9) are respectively slidably connected to the inner walls of the four groups of grooves (8), and one side of the two groups of clamping plates (9) is fixedly connected to two sliding rods (10), and one end of the four groups of sliding rods (10) is respectively located inside the four annular grooves (6), and a driving mechanism (11) is provided between the two connecting plates (2).

2. A dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The driving mechanism (11) comprises two slide grooves (111), the two slide grooves (111) are respectively opened at opposite sides of the two support seats (1), a movable plate (112) is slidably connected between the two slide grooves (111), a screw rod (113) is rotatably connected between the two connecting plates (2), a motor (114) is fixedly connected to the back side of the connecting plate (2), an output shaft of the motor (114) passes through the back connecting plate (2) and is fixedly connected to the screw rod (113), the movable plate (112) is sleeved on the screw rod (113) and is threadedly connected thereto, two racks (115) are fixedly connected to the top and bottom of the movable plate (112), and a gear ring meshing with the racks (115) is opened on the outer sides of the four rotating rings (5).

3. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: One end of the slide rod (10) is rotatably connected to a roller (12), and the outer side of the roller (12) is in contact with the inner wall of the annular groove (6).

4. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: A limiting ring (13) is embedded on one side of the support seat (1), and one side of the limiting ring (13) is fixedly connected to the rotating ring (5).

5. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: A spring (14) is fixedly connected to the inner wall of the groove (8), and the other end of the spring (14) is in contact with the clamping plate (9).

6. A dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The clamping plate (9) is provided with a segmented groove (15), the inner wall of the segmented groove (15) is slidably connected to a connecting block (16), one side of the connecting block (16) is penetrated by two screw rods (17) slidably connected thereto, one end of the two screw rods (17) are penetrated by the clamping plate (9) and are threadedly connected thereto.

7. A dry-type transformer for preventing coil loosening according to claim 6, characterized in that: The top and bottom of the connection block (16) are fixedly connected to the limit block (18), and the inner wall of the segmented groove (15) is provided with two limit grooves (19) slidably connected to the limit block (18).

8. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: A controller (20), a signal receiver (21) and a signal transmitter (22) are fixedly connected to the front side of the connecting plate (2).

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