Air-cooled dry-type transformer

Abstract

The invention relates to the technical field of dry-type transformers, and discloses an air-cooled dry-type transformer which comprises a dry-type transformer body and a supporting base fixedly arranged at the bottom of the dry-type transformer body, supporting rods are fixedly arranged at the two ends of the top of the supporting base, and a guide plate is fixedly arranged at the upper ends of the two supporting rods jointly; two symmetrically-arranged guide grooves are formed in the guide plate, guide blocks are slidably arranged in the two guide grooves in a penetrating mode, vertical plates are fixedly arranged at the bottoms of the two guide blocks, a supporting frame is arranged at the lower end of the outer wall of each vertical plate in a contact mode, a fan is fixedly arranged on the side portion of each supporting frame in a penetrating mode, and two symmetrically-arranged air guide plates are fixedly arranged at the lower end of the interior of each supporting frame. And semiconductor chilling plates are fixedly embedded in the two air deflectors. According to the air-cooled dry-type transformer, when the transformer is used, the fan on the outer side of the transformer can reciprocate around the outer side of the transformer to supply air, manual intervention is avoided as much as possible, and the transformer can operate stably.

Description

Technical Field

[0001] The 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 coils cast with 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 overlapping its components have anti-loosening properties. Dry-type transformers will generate a lot of heat when in use, so forced air cooling is required.

[0003] After searching, the announcement number CN220065349U discloses an air-cooled dry-type transformer. The dry-type transformer is provided with an active cooling mechanism on the transformer body. After the fan is started, the external air can enter the ice storage tank through the through groove, so that the fan can blow out cold air, and the active 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 dissipated and cooled 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 is required to frequently move back and forth around the transformer to ensure the stable operation of the cooling mechanism, resulting in the inability of the transformer to carry out air cooling work independently and stably, reducing the convenience of heat dissipation during the operation of the transformer, and at the same time consuming more manual labor, reducing the use effect of the transformer. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides an air-cooled dry-type transformer which has the advantages of being able to stably drive the outer air-cooling mechanism of the dry-type transformer during operation, and to perform reciprocating blowing work around the dry-type transformer, thereby avoiding manual intervention as much as possible and improving the stability of the dry-type transformer during operation. This solves the problem that when the dry-type transformer is in use, the operator needs to frequently reciprocate around the transformer during the cooling operation so that the cooling mechanism can operate stably, resulting in the inability of the transformer's air cooling work to be performed autonomously and stably.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: 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 are fixedly arranged at both ends of the top of the support base, a guide plate is fixedly arranged at the upper ends of the two support rods, two symmetrical guide grooves are provided inside the guide plate, guide blocks are slidably penetrated in the two guide grooves, vertical plates are fixedly arranged at the bottoms of the two guide blocks, a support frame is contacted at the lower end of the outer wall of the vertical plate, a fan is fixedly penetrated at the side of the support frame, two symmetrical air guide plates are fixedly arranged at the lower end of the inner part of the support frame, and semiconductor cooling sheets are fixedly embedded in the inner parts 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 that are far away are respectively fixedly connected to the tops of the two guide blocks;

[0010] A mounting frame is fixedly provided on the back side of the guide plate, and a winding driving mechanism for driving the winding wheel to rotate is provided between the mounting frame 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 cooperated with the rack, the first gear is fixedly sleeved on the vertical rod, and can pull the guide block, thereby reducing manual intervention and ensuring stable air supply work of the fan.

[0013] Preferably, the connecting plate is in contact with 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 and cooperates 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 on the lower end of the support frame, so that the fan can move longitudinally to increase the air 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, so as to provide limited support for the longitudinal movement of the support frame.

[0018] Preferably, the interiors of 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, so that 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] (III) Beneficial effects

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

[0023] 1. The air-cooled dry-type transformer, through the support base, support rod, guide plate, guide groove, vertical plate, support frame, fan, vertical rod, winding wheel, connecting rope, return spring and winding drive mechanism, can make the outer fan of the transformer reciprocate around the outer side of the transformer to supply air when the transformer is in use, and human intervention is avoided as much as possible, so that the transformer can operate stably.

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

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

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

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

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

[0029] Figure 5 for Figure 1 A cutaway 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 rod, 19 connecting plate, 20 rack, 21 first gear, 22 return spring, 23 second reciprocating screw rod, 24 gear ring, 25 second gear, 26 telescopic rod, 27 heat-conducting copper plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-5 A wind-cooled dry-type transformer comprises a dry-type transformer 1 and a support base 2 fixedly arranged at the bottom of the dry-type transformer 1, support rods 3 are fixedly arranged at both ends of the top of the support base 2, a guide plate 4 is fixedly arranged at the upper ends of the two support rods 3, two symmetrically arranged guide grooves are provided inside the guide plate 4, guide blocks 5 are slidably penetrated in the two guide grooves, vertical plates 6 are fixedly arranged at the bottom of the two guide blocks 5, a support frame 7 is contacted at the lower end of the outer wall of the vertical plate 6, a fan 8 is fixedly penetrated at the side of the support frame 7, two symmetrically arranged air guide plates 9 are fixedly arranged at the lower end of the inner part of the support frame 7, and semiconductor cooling sheets 10 are fixedly embedded in the inner parts of the two air guide plates 9;

[0034] 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 frame 14 is fixedly provided on the back side of the guide plate 4. A spring for driving the winding wheel 12 to rotate is provided between the mounting frame 14 and the winding wheel 12. The invention discloses a dynamic winding drive mechanism, which 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. The connecting plate 19 is in contact with the surface of the mounting frame 14. A rack 20 is fixedly provided on the end of the connecting plate 19. The rack 20 is matched with a first gear 21. The first gear 21 is fixedly sleeved on the vertical rod 11.

[0035] 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 plate 9 and contact the transformer, so that the transformer can be effectively cooled by blowing air;

[0036] While the fan 8 is running, the motor 16 can be started, so that the motor 16 drives the first reciprocating screw rod 18 to rotate. At this time, the first reciprocating screw rod 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 meshed 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 9 to rotate around the outside of the transformer, and when the winding wheel 12 rotates, the elastic force of the return spring 22 can make the fan 8 move back 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.

[0037] Example 2

[0038] Embodiment 2 is based on Embodiment 1 to increase the blowing range of the fan 8 to the transformer during the lateral movement. Figure 1As shown, a fixed plate 15 is fixedly provided at 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, and 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, and the upper end of the second reciprocating screw 23 is threadedly arranged on the inner lower end of the support frame 7, and 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, and a gear ring 24 is fixedly provided on the outer wall of the support base 2, and a second gear 25 is fixedly provided on the lower end of the second reciprocating screw 23, and the second gear 25 is matched with the gear ring 24.

[0039] 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 gear ring 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 under the support of the telescopic rod 26, so that the fan 7 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 7 to the transformer and improving the cooling effect on the transformer.

[0040] Example 3

[0041] Embodiment 3 is based on Embodiment 1 to further improve the heat dissipation effect. 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 one side close to each other, and one end of the semiconductor cooling plate 10 is in contact with the side wall of the heat-conducting copper plate 27.

[0042] Since the semiconductor refrigeration sheet 10 is embedded in the air guide plate 9, the cold end of the semiconductor refrigeration sheet 10 is in contact with 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 can transport the generated heat to the outside 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, thereby reducing the heat lost by the cooling air during the flow process and further improving the cooling effect on the transformer.

[0043] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0044] 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. 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 penetrated in the two guide grooves, and vertical plates (6) are fixedly provided at the bottoms of the two guide blocks (5), and a support frame (7) is contacted at the lower end of the outer wall of the vertical plate (6), and a fan (8) is fixedly penetrated on the side of the support frame (7), and two symmetrically arranged air guide plates (9) are fixedly provided at the lower end of the inner part of the support frame (7), and semiconductor cooling plates (10) are fixedly embedded in the inner parts 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 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 fixing 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).

2. The air-cooled dry-type transformer according to claim 1, characterized in that: The winding drive mechanism comprises 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 with the surface of the mounting frame (14).

4. The air-cooled dry-type transformer according to claim 1, characterized in that: 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 and fits with the guide block (5).

5. 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) is rotatably arranged inside the fixed plate (15), and the upper end of the second reciprocating screw (23) is threadedly arranged on the inner lower end of the support frame (7).

6. The air-cooled dry-type transformer according to claim 5, 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 rod (23) is fixedly sleeved with a second gear (25), and the second gear (25) is arranged in coordination with the gear ring (24).

7. 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).

8. The air-cooled dry-type transformer according to claim 1, characterized in that: The interiors of 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 cooling plate (10) contacts and cooperates with the side wall of the heat-conducting copper plate (27).

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

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

Images