Dry-type transformer cooling device

Abstract

The utility model discloses a dry type transformer cooling device, which relates to the technical field of dry type transformers, and comprises a dry type transformer main body and two bottom plates, the bottom surface of each bottom plate is provided with two self-locking universal wheels, the interiors of the two bottom plates are fixedly connected with cooling boxes, and the dry type transformer main body is positioned in the two cooling boxes. Through cooperation of the bottom plate, the self-locking universal wheels, the cooling boxes, the cooling assembly and the driving assembly, the two cooling boxes can cover the outer portion of the dry-type transformer body conveniently to be aligned for cooling, compared with the mode that the dry-type transformer body is hoisted into the cooling boxes through external equipment to be aligned for cooling, the process is simpler and more convenient, and the cooling efficiency is improved. And the cooling box can be automatically controlled to move in the direction away from the dry-type transformer main body during subsequent maintenance of the dry-type transformer main body, so that the situation that the maintenance efficiency is delayed due to interference between the maintenance tools and the cooling box can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformers, in particular to a dry-type transformer cooling device. Background Art

[0002] A dry-type transformer refers to a transformer whose core and windings are not immersed in insulating oil. It is widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places. The cooling methods of dry-type transformers are divided into natural air cooling and forced air cooling. When naturally cooled, the transformer can operate continuously for a long time at rated capacity. When forced air cooling is used, the transformer output capacity can be increased by 50%. It is suitable for intermittent overload operation or emergency overload operation. Due to the large increase in load loss and impedance voltage during overload operation, it is in a non-economic operating state, so it should not be subjected to long-term continuous overload operation. During the operation of the dry-type transformer, under the action of electricity and magnetism, its windings and core will heat up. Due to the unique design and operation mode of the dry-type transformer, its own heat dissipation effect is very poor, so active heat dissipation is generally used to speed up the cooling of the transformer to improve its stability.

[0003] According to the patent with application number 202222160207.8, a dry-type transformer cooling device is disclosed, including a cooling box, a box cover, a dry-type transformer, a diverter box and a cooling mechanism. The top of the cooling box is open, and a box cover is detachably provided at the open position. A dry-type transformer is arranged in the cooling box. Meshes are provided on the side walls and the bottom of the cooling box. A cover body for air supply is sealedly connected to the side walls and the bottom of the cooling box. An air outlet of the cooling mechanism is connected to an air supply pipe, and an end of the air supply pipe away from the cooling mechanism is connected to a diverter box. The diverter box is connected to each cover body through a plurality of air supply pipes. The cooling mechanism is started to generate cold air and is supplied to the diverter box through the air supply pipe. The diverter box diverts the cold air to the air supply pipe, and the cold air passing through the air supply pipe enters the cover body.

[0004] By adopting the above scheme, cold air can be delivered to the dry-type transformer over a large area, thereby improving the cooling effect and ensuring the working stability of the dry-type transformer. However, when the above scheme is used in practice, the dry-type transformer needs to be hoisted to the inside of the cooling box by external equipment before it can be aligned for cooling. The process is very troublesome, and the cooling box may also interfere with the maintenance tools during the subsequent maintenance of the dry-type transformer, thereby delaying the maintenance efficiency. To this end, we provide a dry-type transformer cooling device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a dry-type transformer cooling device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dry-type transformer cooling device, comprising a dry-type transformer main body and two bottom plates, two self-locking universal wheels are installed on the bottom surfaces of the two bottom plates, cooling boxes are fixedly connected to the inside of the two bottom plates, the dry-type transformer main body is located inside the two cooling boxes, and cooling components for cooling the dry-type transformer main body are arranged on the two cooling boxes, and a driving component is arranged outside the dry-type transformer main body, and the driving component is used to drive the two bottom plates to move in opposite directions.

[0007] Furthermore, the cooling assembly includes a vent opened inside a cooling box, a rotating shaft is provided inside the cooling box, an outer surface of the rotating shaft is rotatably connected to a support plate, an outer surface of the support plate is fixedly connected to an inner wall of the cooling box, and an outer surface of the rotating shaft is fixedly connected to a fan blade, and the fan blade is located between the support plate and the dry-type transformer body.

[0008] Furthermore, the outer surface of the cooling box is fixedly connected to a motor mounting plate, a first motor is mounted on the motor mounting plate, the outer surface of the output end of the first motor and the outer surface of the rotating shaft are fixedly connected to synchronous wheels, and the two synchronous wheels are connected by a synchronous belt transmission.

[0009] Furthermore, a filter screen is installed on the outer surface of the cooling box, and the filter screen is flush with the vent.

[0010] Furthermore, the drive assembly includes a U-shaped plate, a side of the U-shaped plate away from the two bottom plates is fixedly connected to two mounting seats, the interior of the U-shaped plate is rotatably connected to a bidirectional screw rod, a second motor is installed on one side of the U-shaped plate, and the output end of the second motor is fixedly connected to one end of the bidirectional screw rod.

[0011] Furthermore, the outer surface thread of the bidirectional screw has two symmetrical threaded blocks, the backs of the two threaded blocks are slidably connected to the inner wall of the U-shaped plate, and the fronts of the two threaded blocks are fixedly connected to the backs of the two base plates respectively.

[0012] Compared with the prior art, the dry-type transformer cooling device has the following beneficial effects:

[0013] The utility model can facilitate the alignment of two cooling boxes on the outside of the dry-type transformer main body for cooling through the cooperation among the bottom plate, the self-locking universal wheel, the cooling box, the cooling assembly and the driving assembly. Compared with hoisting the dry-type transformer main body to the inside of the cooling box by external equipment for alignment and cooling, the process is simpler and more convenient. In addition, when the dry-type transformer main body is subsequently repaired, the cooling box can be automatically controlled to move in a direction away from the dry-type transformer main body, thereby avoiding interference between the repair tools and the cooling boxes, which delays the repair efficiency.

[0014] The utility model can prevent external dust and impurities from being contaminated on the dry-type transformer body when cooling the dry-type transformer body by arranging a filter screen, and can use expansion screws to fix the U-shaped plate on the ground after the device is moved to a specified position by arranging a mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 For this utility model Figure 2 AA section view;

[0018] Figure 4 This is a schematic diagram of the connection between the cooling box and the support plate of the utility model;

[0019] Figure 5 It is a schematic diagram of the connection between the rotating shaft and the fan blades of the utility model.

[0020] In the figure: 1, bottom plate; 2, self-locking universal wheel; 3, cooling box; 4, dry-type transformer body; 5, cooling assembly; 501, vent; 502, support plate; 503, rotating shaft; 504, fan blade; 505, motor mounting plate; 506, first motor; 507, synchronous wheel; 508, filter; 6, driving assembly; 601, U-shaped plate; 602, mounting seat; 603, bidirectional screw rod; 604, second motor; 605, threaded block. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] The present embodiment provides a dry-type transformer cooling device, which is used to cool a dry-type transformer main body 4. By arranging the bottom plate 1, the self-locking universal wheel 2, the cooling box 3, the cooling assembly 5 and the driving assembly 6, it is convenient to cover the two cooling boxes 3 on the outside of the dry-type transformer main body 4 to align and cool them. Compared with hoisting the dry-type transformer main body 4 to the inside of the cooling box 3 by external equipment to align and cool them, the process is simpler and more convenient. In addition, when the dry-type transformer main body 4 is subsequently repaired, the cooling box 3 can be automatically controlled to move away from the dry-type transformer main body 4, thereby avoiding interference between the repair tools and the cooling boxes 3, which delays the repair efficiency.

[0023] See also Figure 1 to Figure 5A dry-type transformer cooling device comprises a dry-type transformer body 4 and two base plates 1. Two self-locking universal wheels 2 are installed on the bottom surfaces of the two base plates 1. Cooling boxes 3 are fixedly connected to the insides of the two base plates 1. Through grooves adapted to the cooling boxes 3 are opened inside the base plates 1. The dry-type transformer body 4 is located inside the two cooling boxes 3. By arranging the self-locking universal wheels 2, the pushing device can be easily moved.

[0024] The two cooling boxes 3 are both provided with a cooling assembly 5 for cooling the dry-type transformer body 4. The cooling assembly 5 includes a vent 501 opened inside the cooling box 3. A rotating shaft 503 is provided inside the cooling box 3. The outer surface of the rotating shaft 503 is rotatably connected to a support plate 502. The outer surface of the support plate 502 is fixedly connected to the inner wall of the cooling box 3. The outer surface of the rotating shaft 503 is fixedly connected to a fan blade 504. The fan blade 504 is located between the support plate 502 and the dry-type transformer body 4. The outer surface of the cooling box 3 is fixedly connected to a motor mounting plate 505. A first motor 506 is installed on the motor mounting plate 505. The outer surface of the output end of the first motor 506 and the outer surface of the rotating shaft 503 are fixedly connected with a synchronous wheel 507. The two synchronous wheels 507 are connected by a synchronous belt transmission. When the first motor 506 is started, the first motor 506 can drive the synchronous wheel 507, the rotating shaft 503 and the fan blades 504 to rotate. The rotation of the fan blades 504 can cool the dry-type transformer body 4. The two fan blades 504 can be controlled to rotate forward and reversely to increase the air flow per unit time and achieve more efficient heat exchange.

[0025] A filter 508 is installed on the outer surface of the cooling box 3, and the filter 508 is flush with the vent 501. The filter 508 and the cooling box 3 are connected by screws. By setting the filter 508, when the dry-type transformer body 4 is cooled, external dust and impurities can be prevented from being contaminated on the dry-type transformer body 4.

[0026] A driving assembly 6 is arranged outside the dry-type transformer body 4, and the driving assembly 6 is used to drive the two bottom plates 1 to move in opposite directions. The driving assembly 6 includes a U-shaped plate 601, and one side of the U-shaped plate 601 away from the two bottom plates 1 is fixedly connected to two mounting seats 602, and the inside of the U-shaped plate 601 is rotatably connected to a bidirectional screw rod 603, and a second motor 604 is installed on one side of the U-shaped plate 601, and the output end of the second motor 604 is fixedly connected to one end of the bidirectional screw rod 603, and the outer surface of the bidirectional screw rod 603 has a thread Two symmetrical threaded blocks 605, the back sides of the two threaded blocks 605 are slidably connected to the inner wall of the U-shaped plate 601, and the front sides of the two threaded blocks 605 are fixedly connected to the back sides of the two bottom plates 1 respectively. The second motor 604 is started. When the second motor 604 drives the bidirectional screw rod 603 to rotate clockwise, the two threaded blocks 605 can be driven to move in a direction close to each other. When the second motor 604 drives the bidirectional screw rod 603 to rotate counterclockwise, the two threaded blocks 605 can be driven to move in a direction away from each other.

[0027] Working principle: When the utility model is used, first push the device to the vicinity of the dry-type transformer body 4 and align the two cooling boxes 3 with the dry-type transformer body 4, then use the expansion screws to fix the U-shaped plate 601 on the ground, and then start the second motor 604 to drive the bidirectional screw rod 603 to rotate clockwise. The clockwise rotation of the bidirectional screw rod 603 can drive the two threaded blocks 605, the two bottom plates 1 and the two cooling boxes 3 to move in the direction of the dry-type transformer body 4. When the two threaded blocks 605 move to the maximum distance in the direction of the dry-type transformer body 4, the two cooling boxes 3 are in contact with each other on their sides, and at this time, the two cooling boxes 3 are about to be connected. The outer surface of the dry-type transformer body 4 is covered, and finally the self-locking universal wheel 2 is locked and the two first motors 506 are started. The first motor 506 can drive the synchronous wheel 507, the rotating shaft 503 and the fan blades 504 to rotate. The two fan blades 504 rotate to cool the dry-type transformer body 4. When the dry-type transformer body 4 needs to be repaired, the second motor 604 can drive the bidirectional screw rod 603 to rotate counterclockwise. The counterclockwise rotation of the bidirectional screw rod 603 can drive the two threaded blocks 605, the two bottom plates 1 and the two cooling boxes 3 to move away from the dry-type transformer body 4, thereby avoiding interference between the repair tools and the cooling boxes 3, which delays the repair efficiency.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry-type transformer cooling device, comprising a dry-type transformer body (4) and two bottom plates (1), characterized in that: Two self-locking universal wheels (2) are installed on the bottom surfaces of the two bottom plates (1); the insides of the two bottom plates (1) are fixedly connected to cooling boxes (3); the dry-type transformer body (4) is located inside the two cooling boxes (3); the two cooling boxes (3) are provided with cooling components (5) for cooling the dry-type transformer body (4); the outside of the dry-type transformer body (4) is provided with a driving component (6); the driving component (6) is used to drive the two bottom plates (1) to move in opposite directions.

2. A dry-type transformer cooling device according to claim 1, characterized in that: The cooling assembly (5) comprises a vent (501) opened inside a cooling box (3); a rotating shaft (503) is arranged inside the cooling box (3); the outer surface of the rotating shaft (503) is rotatably connected to a support plate (502); the outer surface of the support plate (502) is fixedly connected to the inner wall of the cooling box (3); the outer surface of the rotating shaft (503) is fixedly connected to a fan blade (504); and the fan blade (504) is located between the support plate (502) and the dry-type transformer body (4).

3. A dry-type transformer cooling device according to claim 2, characterized in that: The outer surface of the cooling box (3) is fixedly connected to a motor mounting plate (505), a first motor (506) is mounted on the motor mounting plate (505), the outer surface of the output end of the first motor (506) and the outer surface of the rotating shaft (503) are both fixedly connected to synchronous wheels (507), and the two synchronous wheels (507) are connected via a synchronous belt transmission.

4. A dry-type transformer cooling device according to claim 1, characterized in that: A filter screen (508) is installed on the outer surface of the cooling box (3), and the filter screen (508) is flush with the ventilation opening (501).

5. A dry-type transformer cooling device according to claim 1, characterized in that: The driving assembly (6) comprises a U-shaped plate (601), wherein a side of the U-shaped plate (601) away from the two bottom plates (1) is fixedly connected to two mounting seats (602), a bidirectional screw rod (603) is rotatably connected inside the U-shaped plate (601), a second motor (604) is mounted on one side of the U-shaped plate (601), and an output end of the second motor (604) is fixedly connected to one end of the bidirectional screw rod (603).

6. A dry-type transformer cooling device according to claim 5, characterized in that: The outer surface thread of the bidirectional screw rod (603) has two symmetrical thread blocks (605), the back surfaces of the two thread blocks (605) are slidably connected to the inner wall of the U-shaped plate (601), and the front surfaces of the two thread blocks (605) are fixedly connected to the back surfaces of the two bottom plates (1), respectively.

Images