Dry-type transformer with coil compression structure

Abstract

The application discloses a dry-type transformer with a coil pressing structure, which comprises a support, at least two iron cores are distributed in the support, each of the iron cores is upwardly and downwardly conducted and is peripherally provided with a coil, wherein a connecting ring is fixed to the upper and lower ends of the coil, the connecting ring is rotatably connected with the iron core through an insulating sleeve, a plurality of pressing components are peripherally distributed on each of the coils, the pressing components are connected to the support, and the pressing components can adjust the pressing force of the coils through adjusting rods. Compared with the prior art, the application considers energy saving and performance, the open coil has fast air flow and high heat dissipation efficiency, the coil is pressed on the winding wire, the pressing force can be adjusted in real time, the wire is prevented from loosening, accidents are avoided, the cleaning scraper is attached to the coil, the surface of the coil is cleaned by rotating the coil, and phenomena such as arc generation and short circuit are prevented.

Description

Technical Field

[0001] This invention relates to the field of dry-type transformer technology, specifically a dry-type transformer with a coil clamping structure. Background Technology

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, and CNC machinery. Simply put, a dry-type transformer is a transformer whose core and windings are not immersed in insulating oil. Dry-type transformers are divided into enclosed and open structures. Enclosed transformers have their transformer body inside a sealed casing and are not in direct contact with the atmosphere. Due to poor sealing and heat dissipation, they are mainly used in mining and are explosion-proof. Open-type transformers have their transformer body in direct contact with the atmosphere and are suitable for relatively dry and clean indoor environments. They generally have two cooling methods: air self-cooling and air cooling. Open-type structures have high heat dissipation efficiency, but they are prone to dust and debris accumulation, which can affect equipment operation. Furthermore, in exposed environments, the coil windings are more likely to loosen, creating safety hazards.

[0003] Therefore, it is necessary to provide a dry-type transformer with a coil clamping structure to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dry-type transformer with a coil clamping structure, comprising a support frame, wherein at least two iron cores are distributed between the support frame, each iron core is vertically conductive and has a coil sleeved around its periphery, wherein the upper and lower ends of the coil are fixed with connecting rings, and the connecting rings are rotatably connected to the iron cores through insulating sleeves;

[0005] Each coil has multiple clamping components distributed around its periphery. These clamping components are connected to a bracket and can adjust the clamping force of the coil via an adjusting rod.

[0006] Furthermore, as a preferred embodiment, a toothed ring is fixedly fitted on the upper end of the insulating sleeve located at the bottom of each coil, and the toothed rings in two adjacent coils mesh with each other;

[0007] A drive motor is fixed to one side of the bracket, and a gear is connected to the output end of the drive motor, and the gear meshes with a gear ring nearby.

[0008] Furthermore, preferably, the winding directions of two adjacent coils are opposite, and the rotation direction of the drive motor causes each coil to rotate along its winding direction.

[0009] Furthermore, as a preferred embodiment, a ring of conductive graphite is fixed on the side of the connecting ring away from the coil, and the beginning and end of the wires in the coil are respectively connected to the conductive graphite on the connecting rings at their upper and lower ends.

[0010] The bracket is fixedly connected to the upper and lower parts of each connecting ring via insulating terminals. Each of the power receiving rods has a smooth arc surface at the end near its corresponding connecting ring, and the arc surface is in contact with the conductive graphite on the corresponding connecting ring.

[0011] The other end of the power receiving pole is connected to a wire.

[0012] Furthermore, as a preferred embodiment, the clamping assembly includes a vertical guide rail, which is fixedly connected to the bracket and has an adjusting rod slidably connected inside it. At least two horizontal guide rails are fixed on the side of the vertical guide rail corresponding to the position of the coil, and the plane of the horizontal guide rail passes through the axis of the coil.

[0013] Push rods are slidably connected to the horizontal guide rail, and the end of each push rod away from the vertical guide rail is fixedly connected to the pressure groove.

[0014] Each adjusting rod is connected to a clamping link between itself and each push rod. The two ends of the clamping link are hinged to the adjusting rod and the push rod, respectively. When the push rod moves to the direction closest to the vertical guide rail, there is an angle between the push rod and the clamping link.

[0015] Furthermore, preferably, a pressure roller is connected to the side of the pressure groove away from the push rod, and the two ends of the pressure roller are rotatably connected to the upper and lower end faces of the pressure groove via a rotating shaft;

[0016] Furthermore, when the push rod moves to the direction closest to the vertical guide rail, there is a gap between the pressure roller and the coil; and it can fit into the coil as the push rod moves away from the vertical guide rail.

[0017] Furthermore, as a preferred embodiment, the sides of the pressure grooves on both sides of the pressure roller are provided with rotatable cleaning scrapers, and a scraper connecting rod is connected between the cleaning scraper and the side of the pressure groove. The cleaning scraper can be rotated to fit against the coil through the scraper connecting rod.

[0018] Furthermore, as a preferred embodiment, the two ends of the pressure groove are provided with sliding grooves, and a slider is provided in the sliding groove that can slide up and down. The rotating shaft of the pressure roller is rotatably connected to the slider, and a support spring is provided between the slider and the bottom of the pressure groove. The support spring provides a supporting force to move the slider away from the bottom of the pressure groove.

[0019] A through groove is provided in the groove corresponding to the position of the scraper connecting rod. One end of the scraper connecting rod is hinged to the inner side of the cleaning scraper, and the other end passes through the through groove and is hinged to the slider.

[0020] Furthermore, as a preferred embodiment, the upper ends of each adjusting rod corresponding to the same coil are fixedly connected to the adjusting plate, and the adjusting plate is connected to the bracket through a servo telescopic rod, which enables synchronous adjustment of the adjusting rods in the same coil.

[0021] Furthermore, preferably, a cooling fan is provided on one side of the support corresponding to each coil. Compared with the prior art, the beneficial effects of the present invention are:

[0022] In this invention, the transformer can be cooled by natural air cooling or forced air cooling. When cooled by natural air, the transformer can operate at its rated capacity. When the transformer is intermittently overloaded and forced air cooling is used, the cooling fan operates to dissipate heat from the coil, and the drive motor drives the coil to rotate, making the heat dissipation uniform. This allows the transformer to balance energy saving and performance, and the open coil with fast airflow has high heat dissipation efficiency.

[0023] In this invention, when the adjusting rod changes its vertical position, the pressing rod connected to it drives the push rod to slide in the horizontal guide rail. When the coil rotates, the push rod is pushed to make the pressure roller fit against the coil, so that the pressure roller can rotate with the coil, thereby pressing the wire wound on the coil. The pressing force can be adjusted in real time to prevent the wire from loosening, avoid accidents, and also improve the service life of the equipment.

[0024] In this invention, when the pressure roller presses the coil, the support spring is compressed, causing the slider to move towards the bottom of the pressure groove. This causes the scraper connecting rod to push the cleaning scraper to rotate away from the coil, thereby separating the cleaning scraper from the coil. This prevents the coil from being disturbed by the collision between the cleaning scraper and debris during operation, thus preventing phenomena such as electric arcs and short circuits.

[0025] When the coil stops operating, the pressure of the pressure roller is released, allowing the cleaning scraper to adhere to the coil. The surface of the coil is then cleaned by rotating the coil, preventing dust from accumulating over a long period, which would reduce the coil's heat dissipation and cause malfunctions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a dry-type transformer with a coil clamping structure;

[0027] Figure 2 This is a schematic diagram of the clamping assembly structure of a dry-type transformer with a coil clamping structure;

[0028] Figure 3 A schematic diagram of a cleaning scraper structure for a dry-type transformer with a coil clamping structure;

[0029] In the diagram: 1. Bracket; 2. Iron core; 3. Coil; 4. Connecting ring; 5. Insulating sleeve; 6. Clamping assembly; 7. Adjusting rod; 8. Gear ring; 9. Drive motor; 10. Adjusting plate; 11. Servo telescopic rod; 12. Power receiving rod; 13. Insulating terminal; 14. Cooling fan; 61. Vertical guide rail; 62. Horizontal guide rail; 63. Push rod; 64. Pressure groove; 65. Clamping connecting rod; 66. Pressure roller; 661. Rotating shaft; 67. Cleaning scraper; 68. Scraper connecting rod; 69. Slide groove; 610. Sliding block; 611. Support spring. Detailed Implementation

[0030] Please see Figure 1 In this embodiment of the invention, a dry-type transformer with a coil clamping structure includes a support 1, at least two iron cores 2 are distributed between the support 1, each iron core 2 is vertically conductive and is surrounded by a coil 3, wherein the upper and lower ends of the coil 3 are fixed with connecting rings 4, and the connecting rings 4 are rotatably connected to the iron core 2 through an insulating sleeve 5.

[0031] Each coil 3 has multiple clamping components 6 distributed around its periphery. The clamping components 6 are connected to the bracket 1, and the clamping force of the clamping components 6 can be adjusted by the adjusting rod 7.

[0032] In this embodiment, a toothed ring 8 is fixedly sleeved on the upper end of the insulating sleeve 5 located at the bottom of each coil 3, and the toothed rings 8 in two adjacent coils 3 mesh with each other.

[0033] A drive motor 9 is fixed on one side of the bracket 1. The output end of the drive motor 9 is connected to a gear, and the gear meshes with a gear ring 8 located nearby.

[0034] In other words, the drive motor 9 can simultaneously drive each meshing gear ring 8, thereby enabling each coil 3 to rotate simultaneously.

[0035] In this embodiment, the winding directions of two adjacent coils 3 are opposite, and the rotation direction of the drive motor 9 causes each coil 3 to rotate along its winding direction, thereby enabling the clamping assembly 6 to clamp the coil 3 along its winding direction.

[0036] In this embodiment, a ring of conductive graphite is fixed on the side of the connecting ring 4 away from the coil 3, and the first and last ends of the wires in the coil 3 are respectively connected to the conductive graphite on the connecting ring 4 at its upper and lower ends.

[0037] The bracket 1 is fixedly connected to the upper and lower parts of each connecting ring 4 via insulating terminals 13. Each of the current receiving rods 12 has a smooth arc surface at one end near its corresponding connecting ring 4, and the arc surface is in contact with the conductive graphite on the corresponding connecting ring 4.

[0038] The other end of the power receiving pole 12 is connected to a wire.

[0039] Please see Figure 2 In this embodiment, the pressing component 6 includes a vertical guide rail 61, which is fixedly connected to the bracket 1 and has an adjusting rod 7 slidably connected inside it. At least two horizontal guide rails 62 are fixed on the side of the vertical guide rail 61 corresponding to the position of the coil 3, and the plane of the horizontal guide rail 62 passes through the axis of the coil 3.

[0040] Push rods 63 are slidably connected to the horizontal guide rail 62, and the end of each push rod 63 away from the vertical guide rail 61 is fixedly connected to the pressure groove 64.

[0041] Each of the adjusting rods 7 and each push rod 63 is connected by a clamping link 65. The two ends of the clamping link 65 are respectively hinged to the adjusting rod 7 and the push rod 63. When the push rod 63 moves to the direction closest to the vertical guide rail 61, there is an angle between the push rod 63 and the clamping link 65.

[0042] In other words, when the adjusting rod 7 changes its vertical position, the pressing connecting rod 65 connected to it drives the push rod 63 to slide in the horizontal guide rail 62, thereby changing the distance between the pressing groove 64 and the coil 3.

[0043] In this embodiment, a pressure roller 66 is connected to the side of the pressure groove 64 away from the push rod 63, and the two ends of the pressure roller 66 are rotatably connected to the upper and lower end faces of the pressure groove 64 through a rotating shaft 661.

[0044] Furthermore, when the push rod 63 moves to the direction closest to the vertical guide rail 61, there is a gap between the pressure roller 66 and the coil 3; and it can fit into the coil 3 as the push rod 63 moves away from the vertical guide rail 61.

[0045] In other words, when the coil 3 rotates, the pressure roller 66 is brought into contact with the coil 3 by pushing the push rod 63, so that the pressure roller 66 can rotate with the coil 3, thereby pressing the wire wound on the coil 3.

[0046] In this embodiment, the sides of the pressure grooves 64 on both sides of the pressure roller 66 are provided with rotatable cleaning scrapers 67. A scraper connecting rod 68 is also connected between the cleaning scraper 67 and the sides of the pressure grooves 64. The cleaning scraper 67 can be rotated to fit with the coil 3 through the scraper connecting rod 68.

[0047] Please see Figure 3 In this embodiment, the two ends of the pressure groove 64 are provided with sliding grooves 69, and the sliding groove 69 is provided with a slider 610 that can slide up and down. The rotating shaft 661 of the pressure roller 66 is rotatably connected to the slider 610, and a support spring 611 is provided between the slider 610 and the bottom of the pressure groove 64. The support spring 611 provides a support force to make the slider 610 move away from the bottom of the pressure groove 64.

[0048] The pressure groove 64 has a through groove at the position corresponding to the scraper connecting rod 68. One end of the scraper connecting rod 68 is hinged to the inner side of the cleaning scraper 67, and the other end passes through the through groove and is hinged to the slider 610.

[0049] In other words, when the pressure roller 66 presses the coil 3, the support spring 611 is compressed, causing the slider 610 to move towards the bottom of the pressure groove 64. This causes the scraper connecting rod 68 to push the cleaning scraper 67 to rotate away from the coil 3, thereby separating the cleaning scraper 67 from the coil 3. This prevents the coil 3 from being disturbed by the collision between the cleaning scraper 67 and debris during operation, thus preventing the generation of electric arcs, short circuits, and other phenomena. When the coil 3 stops operating, the pressure of the pressure roller 66 is released, allowing the cleaning scraper 67 to adhere to the coil 3 and clean the surface of the coil 3 by rotating the coil 3.

[0050] Please see Figure 1 In this embodiment, the upper ends of each adjusting rod 7 corresponding to the same coil 3 are fixedly connected to the adjusting plate 10. The adjusting plate 10 is connected to the bracket 1 through the servo telescopic rod 11, and the adjusting rods 7 in the same coil 3 can be adjusted synchronously through the servo telescopic rod 11.

[0051] In this embodiment, a cooling fan 14 is provided on one side of the bracket 1 for each coil 3.

[0052] In practice, the transformer cooling method can be either natural air cooling or forced air cooling. Under natural air cooling, the transformer can operate at its rated capacity. When forced air cooling is used during intermittent overload operation, the cooling fan 14 operates to dissipate heat from the coil 3, and the drive motor 9 drives the coil 3 to rotate, ensuring uniform heat dissipation. Furthermore, as the coil 3 rotates, the clamping assembly 6 clamps the coil windings. The specific method is as follows:

[0053] The adjusting rod 7 in the same coil 3 is synchronously adjusted by the servo telescopic rod 11. When the adjusting rod 7 changes its up and down position, the pressing rod 65 connected to it drives the push rod 63 to slide in the horizontal guide rail 62. When the coil 3 rotates, the pressure roller 66 is pushed to fit the coil 3 by pushing the push rod 63. The pressure roller 66 can rotate with the coil 3, thereby pressing the wire wound on the coil 3.

[0054] Furthermore, when the pressure roller 66 presses the coil 3, the support spring 611 is compressed, causing the slider 610 to move towards the bottom of the pressure groove 64, which in turn causes the scraper connecting rod 68 to push the cleaning scraper 67 to rotate away from the coil 3, thereby separating the cleaning scraper 67 from the coil 3. This prevents the coil 3 from being disturbed by the collision between the cleaning scraper 67 and debris during operation, thus preventing the generation of electric arcs, short circuits, and other phenomena.

[0055] When coil 3 stops operating, the pressure of pressure roller 66 is released, causing cleaning scraper 67 to adhere to coil 3, and the surface of coil 3 is cleaned by rotating coil 3.

[0056] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dry-type transformer with a coil clamping structure, comprising a support (1), wherein at least two iron cores (2) are distributed between the support (1), each iron core (2) is vertically conductive and has a coil (3) sleeved around its periphery, characterized in that, The coil (3) is fixed with connecting rings (4) at its upper and lower ends. The connecting rings (4) are rotatably connected to the iron core (2) through insulating sleeves (5). Each coil (3) has multiple clamping components (6) distributed around its periphery. The clamping components (6) are connected to the bracket (1). The clamping components (6) can adjust the clamping force of the coil (3) by means of the adjusting rod (7). The clamping assembly (6) includes a vertical guide rail (61), which is fixedly connected to the bracket (1) and has an adjusting rod (7) slidably connected inside it. At least two horizontal guide rails (62) are fixed on the side of the vertical guide rail (61) corresponding to the position of the coil (3). The plane of the horizontal guide rail (62) passes through the axis of the coil (3). Push rods (63) are slidably connected to the horizontal guide rail (62), and the end of each push rod (63) away from the vertical guide rail (61) is fixedly connected to the pressure groove (64); Each of the adjusting rod (7) and each push rod (63) is connected by a clamping link (65). The two ends of the clamping link (65) are respectively hinged to the adjusting rod (7) and the push rod (63). When the push rod (63) moves to the direction closest to the vertical guide rail (61), there is an angle between the push rod (63) and the clamping link (65).

2. The dry-type transformer having a coil press structure according to claim 1, characterized by, The upper end of the insulating sleeve (5) located at the bottom of each coil (3) is fixedly fitted with a toothed ring (8), and the toothed rings (8) in two adjacent coils (3) mesh with each other; A drive motor (9) is fixed on one side of the bracket (1). The output end of the drive motor (9) is connected to a gear, and the gear meshes with a gear ring (8) located nearby.

3. A dry-type transformer having a coil press structure according to claim 2, characterized in that, The winding directions of two adjacent coils (3) are opposite, and the rotation direction of the drive motor (9) causes each coil (3) to rotate along its winding direction.

4. The dry-type transformer having a coil press structure according to claim 1, characterized by, A ring of conductive graphite is fixed on the side of the connecting ring (4) away from the coil (3), and the first and last ends of the wires in the coil (3) are respectively connected to the conductive graphite on the connecting ring (4) at its upper and lower ends; The upper and lower parts of the bracket (1) are fixedly connected to the positions of each connecting ring (4) by insulating terminals (13). Each of the current receiving rods (12) has a smooth arc surface at one end near the corresponding connecting ring (4), and the arc surface is in contact with the conductive graphite on the corresponding connecting ring (4). The other end of the power receiving pole (12) is connected to a wire.

5. The dry-type transformer having a coil press structure according to claim 1, characterized by, The side of the pressure groove (64) away from the push rod (63) is connected to a pressure roller (66), and the two ends of the pressure roller (66) are rotatably connected to the upper and lower end faces of the pressure groove (64) through a rotating shaft (661). Furthermore, when the push rod (63) moves to the direction closest to the vertical guide rail (61), there is a gap between the pressure roller (66) and the coil (3), and it can fit into the coil (3) when the push rod (63) moves away from the vertical guide rail (61).

6. A dry-type transformer having a coil press structure according to claim 5, characterized in that, The pressure grooves (64) on both sides of the pressure roller (66) are provided with rotatable cleaning scrapers (67). A scraper connecting rod (68) is also connected between the cleaning scraper (67) and the side of the pressure groove (64). The cleaning scraper (67) can be rotated to fit with the coil (3) through the scraper connecting rod (68).

7. A dry-type transformer with a coil clamping structure according to claim 6, characterized in that, The pressure groove (64) has sliding grooves (69) at both ends. A slider (610) is provided in the sliding groove (69) and can slide up and down. The rotating shaft (661) of the pressure roller (66) is rotatably connected to the slider (610). A support spring (611) is provided between the slider (610) and the bottom of the pressure groove (64). The support spring (611) provides a supporting force to move the slider (610) away from the bottom of the pressure groove (64). The pressure groove (64) has a through groove in the position corresponding to the scraper connecting rod (68). One end of the scraper connecting rod (68) is hinged to the inner side of the cleaning scraper (67), and the other end passes through the through groove and is hinged to the slider (610).

8. A dry-type transformer with a coil clamping structure according to claim 1, characterized in that, The upper ends of each adjusting rod (7) corresponding to the same coil (3) are fixedly connected to the adjusting plate (10). The adjusting plate (10) is connected to the bracket (1) through the servo telescopic rod (11). The adjusting rod (7) in the same coil (3) can be adjusted synchronously through the servo telescopic rod (11).

9. A dry-type transformer with a coil clamping structure according to claim 1, characterized in that, One side of the bracket (1) is provided with a cooling fan (14) corresponding to each coil (3).

Images