An air-cooled dry-type transformer

Abstract

The present invention relates to the technical field of dry-type transformers, and discloses an air-cooled dry-type transformer, comprising a dry-type transformer and a support base fixedly mounted at the bottom of the dry-type transformer, support rods being fixedly mounted at both ends of the top of the support base, guide plates being fixedly mounted at the upper ends of the two support rods, two symmetrical guide grooves being provided inside the guide plates, guide blocks being slidably inserted into the two guide grooves, vertical plates being fixedly mounted at the bottoms of the two guide blocks, support frames being contacted at the lower ends of the outer walls of the vertical plates, fans being fixedly inserted into the sides of the support frames, two symmetrical air guide plates being fixedly mounted at the lower ends of the inner parts of the support frames, semiconductor cooling fins being fixedly embedded in the interiors of the two air guide plates. The air-cooled dry-type transformer can, when the transformer is in use, cause the fan outside the transformer to reciprocate around the outside of the transformer to supply air, thereby minimizing manual intervention and enabling the transformer to operate stably.

Description

Technical Field

[0001] The present invention relates to the technical field of dry-type transformers, in particular to an air-cooled dry-type transformer. Background Art

[0002] Dry-type transformers are mainly composed of an iron core made of silicon steel sheets and a coil cast in epoxy resin. An insulating tube is placed between the high and low voltage coils to increase electrical insulation, and the coils are supported and constrained by pads. The fasteners that overlap its components all have anti-loosening properties. Dry-type transformers will generate a lot of heat during use, and thus require forced air cooling.

[0003] After searching, the publication number CN220065349U discloses an air-cooled dry-type transformer. This dry-type transformer is provided with a movable cooling mechanism on the transformer body. When the fan is started, external air can enter the ice storage tank through the through slot, so that the fan can blow out cold air. The movable plate can drive the fan to blow air to both sides of the transformer body in turn to dissipate heat. Through the above arrangement, the transformer can be cooled and dissipated more efficiently.

[0004] However, when the above-mentioned dry-type transformer is in operation, its outer movable cooling mechanism needs to be manually operated by the operator. When the overall specifications of the transformer are large and the heat generation is high, the operator needs to frequently move back and forth around the transformer to ensure the stable operation of the cooling mechanism, resulting in the transformer's air cooling work being unable to proceed autonomously and stably, reducing the convenience of heat dissipation during the operation of the transformer, consuming more manual labor, and reducing the use effect of the transformer. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the deficiencies in the prior art, the present invention provides an air-cooled dry-type transformer that is capable of stably driving an outer air-cooling mechanism thereof during operation of the dry-type transformer, and performing reciprocating blowing operation around the dry-type transformer, thereby minimizing manual intervention and improving the stability of the dry-type transformer during operation. This solves the problem that, when the dry-type transformer is in use, it is necessary for the operator to frequently reciprocate around the transformer during the cooling operation in order to ensure the stable operation of the cooling mechanism, resulting in the inability of the transformer's air cooling operation to be carried out independently and stably.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an air-cooled dry-type transformer, comprising a dry-type transformer and a support base fixedly arranged at the bottom of the dry-type transformer, support rods being fixedly arranged at both ends of the top of the support base, a guide plate being fixedly arranged at the upper ends of the two support rods, two symmetrical guide grooves being provided inside the guide plate, guide blocks being slidably passed through the two guide grooves, vertical plates being fixedly arranged at the bottoms of the two guide blocks, a support frame being contacted at the lower ends of the outer walls of the vertical plates, a fan being fixedly passed through the side of the support frame, two symmetrical air guide plates being fixedly arranged at the lower end of the interior of the support frame, semiconductor cooling fins being fixedly embedded in the interiors of the two air guide plates;

[0009] A vertical rod is rotatably provided at the middle end of the top of the guide plate, a winding wheel is fixedly provided on the rod wall of the vertical rod, two connecting ropes are fixedly wound inside the winding wheel, and the ends of the two connecting ropes are fixedly connected to the tops of the two guide blocks respectively.

[0010] A mounting bracket is fixedly provided on the back side of the guide plate, and a winding drive mechanism for driving the winding wheel to rotate is provided between the mounting bracket and the winding wheel;

[0011] A fixing plate is fixedly provided at the lower end of the vertical plate, and a movable air supply mechanism for driving the support frame to move longitudinally is provided between the vertical plate and the support frame.

[0012] Preferably, the winding drive mechanism includes a motor, two symmetrically arranged mounting plates are fixedly provided on the top of the mounting frame, a first reciprocating screw rod is rotatably provided between the two mounting plates, the motor is fixedly connected to the mounting frame, and the end of the output shaft passes through the mounting plate and is fixedly connected to the first reciprocating screw rod, a connecting plate is threadedly sleeved on the rod wall of the first reciprocating screw rod, a rack is fixedly provided on the end of the connecting plate, and a first gear is provided in conjunction with the rack, and the first gear is fixedly sleeved on the vertical rod, which can pull the guide block, thereby reducing manual intervention and ensuring stable air supply work of the fan.

[0013] Preferably, the connecting plate contacts and cooperates with the surface of the mounting frame to limit the movement of the connecting plate.

[0014] Preferably, a return spring is provided in each of the two guide grooves, one end of the return spring is fixedly connected to the inner wall of the guide groove, and the other end of the return spring is in contact with the guide block, so that the guide block can return to its original position after being pulled.

[0015] Preferably, the movable air supply mechanism includes a second reciprocating screw, which is rotatably arranged inside the fixed plate, and the upper end of the second reciprocating screw is threadedly arranged at the lower end of the support frame, so that the fan can move longitudinally, thereby increasing the blowing and heat dissipation range of the transformer.

[0016] Preferably, the outer wall fixed sleeve of the support base is provided with a gear ring, and the lower end fixed sleeve of the second reciprocating screw is provided with a second gear, and the second gear is matched with the gear ring so that the second reciprocating screw can be driven to rotate stably when the guide block moves laterally.

[0017] Preferably, a telescopic rod is fixedly provided at the lower end of the support frame, and the upper end of the telescopic rod is fixedly connected to the bottom of the guide block, which can provide limited support for the longitudinal movement of the support frame.

[0018] Preferably, the interiors of the two adjacent air guide plates are hollow, and a heat-conducting copper plate is fixedly embedded on the adjacent side. One end of the semiconductor refrigeration plate contacts and cooperates with the side wall of the heat-conducting copper plate, so that the heat-conducting copper plate can receive the coldness of the semiconductor refrigeration plate and cool the cooling air blown out by the fan.

[0019] Preferably, two adjacent air guide plates are arranged obliquely to speed up the flow rate of the cooling air and reduce the temperature lost during the cooling air transportation process.

[0020] Preferably, the winding directions of the two connecting ropes are opposite, and the two connecting ropes can be pulled simultaneously when the winding wheel rotates, so that the two guide blocks and the fan move simultaneously.

[0021] (3) Beneficial effects

[0022] Compared with the prior art, the present invention provides an air-cooled dry-type transformer with the following beneficial effects:

[0023] 1. The air-cooled dry-type transformer is provided with a support base, a support rod, a guide plate, a guide groove, a vertical plate, a support frame, a fan, a vertical rod, a winding wheel, a connecting rope, a return spring and a winding drive mechanism. When the transformer is in use, the fan outside the transformer can reciprocate around the outside of the transformer to supply air, thereby minimizing manual intervention and ensuring stable operation of the transformer.

[0024] 2. The air-cooled dry-type transformer, through the vertical plate, support frame and movable air supply mechanism as well as the second gear and gear ring, can move longitudinally when the fan moves around the outside of the transformer, thereby increasing the fan's air supply range to the transformer and improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of an air-cooled dry-type transformer proposed in the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the top view of the middle support frame, fan, and air guide plate;

[0027] Figure 3 for Figure 1 A schematic diagram of the top view of the middle guide plate;

[0028] Figure 4 for Figure 3 A magnified view of the structure of part A in the middle;

[0029] Figure 5 for Figure 1 A sectional perspective view of the center air deflector.

[0030] In the figure: 1 dry-type transformer, 2 support base, 3 support rod, 4 guide plate, 5 guide block, 6 vertical plate, 7 support frame, 8 fan, 9 air guide plate, 10 semiconductor refrigeration plate, 11 vertical rod, 12 winding wheel, 13 connecting rope, 14 mounting frame, 15 fixing plate, 16 motor, 17 mounting plate, 18 first reciprocating screw, 19 connecting plate, 20 rack, 21 first gear, 22 return spring, 23 second reciprocating screw, 24 ring gear, 25 second gear, 26 telescopic rod, 27 heat-conducting copper plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example

[0032] See also Figure 1-5 A wind-cooled dry-type transformer comprises a dry-type transformer 1 and a support base 2 fixed to the bottom of the dry-type transformer 1, support rods 3 are fixed to both ends of the top of the support base 2, a guide plate 4 is fixed to the upper ends of the two support rods 3, two symmetrical guide grooves are provided inside the guide plate 4, guide blocks 5 are slidably penetrated in the two guide grooves, vertical plates 6 are fixed to the bottoms of the two guide blocks 5, the lower ends of the outer walls of the vertical plates 6 are in contact with a support frame 7, a fan 8 is fixedly penetrated on the side of the support frame 7, two symmetrical air guide plates 9 are fixed to the lower end of the inner part of the support frame 7, and semiconductor cooling fins 10 are fixedly embedded in the inner parts of the two air guide plates 9;

[0033] A vertical rod 11 is rotatably provided at the middle end of the top of the guide plate 4, and a winding wheel 12 is fixedly provided on the rod wall of the vertical rod 11. Two connecting ropes 13 are fixedly wound inside the winding wheel 12. The winding directions of the two connecting ropes 13 are opposite. The two connecting ropes 13 are fixedly connected to the tops of the two guide blocks 5 at one end away from each other. A return spring 22 is provided in each of the two guide grooves. One end of the return spring 22 is fixedly connected to the inner wall of the guide groove, and the other end of the return spring 22 is in contact with the guide block 5. A mounting bracket 14 is fixedly provided on the back side of the guide plate 4. A device for driving the winding wheel 12 to rotate is provided between the mounting bracket 14 and the winding wheel 12. The dynamic winding drive mechanism includes a motor 16, two symmetrically arranged mounting plates 17 are fixed on the top of the mounting frame 14, and a first reciprocating screw rod 18 is rotatably provided between the two mounting plates 17. The motor 16 is fixedly connected to the mounting frame 14, and the end of the output shaft passes through the mounting plate 17 and is fixedly connected to the first reciprocating screw rod 18. The rod wall of the first reciprocating screw rod 18 is threadedly sleeved with a connecting plate 19, and the connecting plate 19 is in contact with the surface of the mounting frame 14. A rack 20 is fixedly provided at the end of the connecting plate 19, and the rack 20 is matched with a first gear 21, and the first gear 21 is fixedly sleeved with the vertical rod 11.

[0034] When the transformer is in use, the semiconductor refrigeration sheet 10 can be started so that the semiconductor refrigeration sheet 10 can cool the side close to the two adjacent air guide plates 9. At this time, the fan 8 is started so that the cooling air output by the fan 8 can effectively cool down after passing through the air guide plates 9 and contact the transformer, thereby effectively blowing and cooling the transformer.

[0035] When the fan 8 is running, the motor 16 can be started, so that the motor 16 drives the first reciprocating screw 18 to rotate. At this time, the first reciprocating screw 18 can drive the rack 20 to move back and forth laterally through the connection with the connecting plate 19. Since the rack 20 is engaged with the first gear 21, the vertical rod 11 can drive the winding wheel 12 to rotate back and forth. During the rotation of the winding wheel 12, the two connecting ropes 13 can be wound and pull the guide block 5, so that the guide block 5 slides in the guide groove and squeezes the return spring 22. At this time, the guide block 5 can drive the support frame 7 and the fan 8 to rotate around the outside of the transformer. When the winding wheel 12 rotates, the elastic force of the return spring 22 can make the fan 8 return to its original position. At this time, under the continuous rotation of the winding wheel 12, the fans 8 on both sides can reciprocate around the transformer, thereby completing effective air cooling and heat dissipation of the transformer. Example

[0036] In order to improve the blowing range of the fan 8 to the transformer during the lateral movement of the fan 8 on the basis of the embodiment 1, Figure 1As shown, a fixed plate 15 is fixed to the lower end of the vertical plate 6, and a mobile air supply mechanism for driving the support frame 7 to move longitudinally is provided between the vertical plate 6 and the support frame 7. The mobile air supply mechanism includes a second reciprocating screw 23, and the second reciprocating screw 23 is rotatably arranged inside the fixed plate 15. The upper end of the second reciprocating screw 23 is threadedly arranged on the lower end of the inner part of the support frame 7, and the lower end of the support frame 7 is fixed with a telescopic rod 26. The upper end of the telescopic rod 26 is fixedly connected to the bottom of the guide block 5. The outer wall of the support base 2 is fixedly sleeved with a gear ring 24, and the lower end of the second reciprocating screw 23 is fixedly sleeved with a second gear 25, and the second gear 25 is matched with the gear ring 24.

[0037] When the guide block 5 drives the vertical plate 6 and the support frame 7 to move horizontally, the second gear 25 engages with the ring gear 24, so that the second gear 25 can drive the second reciprocating screw 23 to rotate. At this time, the second reciprocating screw 23 drives the support frame 7 to move longitudinally. At this time, the support frame 7 can only move longitudinally back and forth under the support of the telescopic rod 26, so that the fan 8 can move horizontally and follow the longitudinal reciprocating movement of the support frame 7 at the same time, thereby increasing the blowing range of the fan 8 to the transformer and improving the cooling effect on the transformer. Example

[0038] In order to further improve the heat dissipation effect based on Example 1, Example 3 Figure 2 and Figure 5 As shown, two adjacent air guide plates 9 are arranged obliquely, the interiors of the two adjacent air guide plates 9 are hollow, and a heat-conducting copper plate 27 is fixedly embedded on the adjacent side, and one end of the semiconductor refrigeration plate 10 is in contact with the side wall of the heat-conducting copper plate 27.

[0039] Since the semiconductor refrigeration sheet 10 is embedded in the air guide plate 9, the cold end of the semiconductor refrigeration sheet 10 contacts the heat-conducting copper plate 27 and can cool the air blown out by the fan 8. At the same time, the hot end of the semiconductor refrigeration sheet 10 is exposed to the outside, and the generated heat can be transported outward without affecting the transformer. Since the two adjacent air guide plates 9 are arranged obliquely, when the cooling air generated by the fan 8 passes through the angle between the two air guide plates 9, the flow rate of the cooling air is accelerated and quickly contacts the transformer, reducing the heat lost by the cooling air during the flow process, and further improving the cooling effect on the transformer.

[0040] It should be noted that the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An air-cooled dry-type transformer, comprising a dry-type transformer (1) and a support base (2) fixedly arranged at the bottom of the dry-type transformer (1), characterized in that: Support rods (3) are fixedly provided at both ends of the top of the support base (2), and a guide plate (4) is fixedly provided at the upper ends of the two support rods (3), and two symmetrically arranged guide grooves are provided inside the guide plate (4), and guide blocks (5) are slidably passed through the two guide grooves, and vertical plates (6) are fixedly provided at the bottoms of the two guide blocks (5), and the lower ends of the outer walls of the vertical plates (6) are in contact with a support frame (7), and a fan (8) is fixedly passed through the side of the support frame (7), and two symmetrically arranged air guide plates (9) are fixedly provided at the lower end of the interior of the support frame (7), and semiconductor cooling fins (10) are fixedly embedded in the interiors of the two air guide plates (9); A vertical rod (11) is rotatably provided at the middle end of the top of the guide plate (4), a winding wheel (12) is fixedly provided on the rod wall of the vertical rod (11), two connecting ropes (13) are fixedly wound inside the winding wheel (12), and the two connecting ropes (13) are fixedly connected to the tops of the two guide blocks (5) at their ends away from each other; A mounting frame (14) is fixedly provided on the back side of the guide plate (4), and a winding drive mechanism for driving the winding wheel (12) to rotate is provided between the mounting frame (14) and the winding wheel (12); A fixed plate (15) is fixedly provided at the lower end of the vertical plate (6), and a movable air supply mechanism for driving the support frame (7) to move longitudinally is provided between the vertical plate (6) and the support frame (7); A return spring (22) is provided in each of the two guide grooves. One end of the return spring (22) is fixedly connected to the inner wall of the guide groove, and the other end of the return spring (22) is in contact with the guide block (5).

2. The air-cooled dry-type transformer according to claim 1, characterized in that: The winding drive mechanism includes a motor (16), two symmetrically arranged mounting plates (17) are fixedly provided on the top of the mounting frame (14), a first reciprocating screw rod (18) is rotatably provided between the two mounting plates (17), the motor (16) is fixedly connected to the mounting frame (14), and the end of the output shaft passes through the mounting plate (17) and is fixedly connected to the first reciprocating screw rod (18), a connecting plate (19) is threadedly sleeved on the rod wall of the first reciprocating screw rod (18), a rack (20) is fixedly provided on the end of the connecting plate (19), the rack (20) is matched with a first gear (21), and the first gear (21) is fixedly sleeved on the vertical rod (11).

3. The air-cooled dry-type transformer according to claim 2, characterized in that: The connecting plate (19) is in contact with and fits the surface of the mounting frame (14).

4. The air-cooled dry-type transformer according to claim 1, characterized in that: The movable air supply mechanism comprises a second reciprocating screw (23), the second reciprocating screw (23) being rotatably arranged inside the fixed plate (15), and the upper end of the second reciprocating screw (23) being threadedly arranged on the lower end inside the support frame (7).

5. The air-cooled dry-type transformer according to claim 4, characterized in that: The outer wall of the support base (2) is fixedly sleeved with a gear ring (24), the lower end of the second reciprocating screw (23) is fixedly sleeved with a second gear (25), and the second gear (25) is arranged in coordination with the gear ring (24).

6. The air-cooled dry-type transformer according to claim 1, characterized in that: A telescopic rod (26) is fixedly provided at the lower end of the support frame (7), and the upper end of the telescopic rod (26) is fixedly connected to the bottom of the guide block (5).

7. The air-cooled dry-type transformer according to claim 1, characterized in that: The interiors of the two adjacent air guide plates (9) are both hollow, and a heat-conducting copper plate (27) is fixedly embedded on one side thereof. One end of the semiconductor refrigeration plate (10) contacts and cooperates with the side wall of the heat-conducting copper plate (27).

8. The air-cooled dry-type transformer according to claim 1, characterized in that: The two adjacent air guide plates (9) are arranged obliquely.

9. The air-cooled dry-type transformer according to claim 1, characterized in that: The winding directions of the two connecting ropes (13) are opposite.

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