A transformer control cabinet and air cooling component

Abstract

The present invention discloses an air cooling assembly, including a cabinet, wherein a support frame is installed at the lower end of the cabinet; an air cooling mechanism, wherein the air cooling includes two installation openings opened at the bottom of the cabinet, and fans are installed in the two installation openings, the wind direction of the fan located on the left side is upward, and the wind direction of the fan located on the right side is downward; a filtering mechanism, wherein the filtering mechanism includes a mounting groove opened at the lower end of the cabinet, a rotating shaft is installed at the inner top of the mounting groove, a rotating circular plate is fixedly connected to the lower end of the rotating shaft, the upper end of the rotating circular plate is in contact with the lower end of the cabinet, and a plurality of installation circular openings are opened on the rotating circular plate at equal intervals, and a dust filter is installed in each of the installation circular openings. The present invention also discloses a transformer control cabinet. During use, the filter part can be regularly and efficiently dredged and cleaned, and even if the filter holes are blocked, they can be dredged.

Description

Technical Field

[0001] The invention relates to the field of control cabinet heat dissipation, and in particular to a transformer control cabinet and an air cooling component. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. It can be divided into power transformers and special transformers according to its use. The difficulty of dissipating the heat generated by traditional transformers increases with the increase of volume and capacity, and additional heat dissipation measures are needed to reduce the temperature.

[0003] The traditional heat dissipation measure is to adopt air cooling. When performing air cooling, in order to prevent dust from entering the cabinet, a filter needs to be set at the air inlet. With long-term use, more dust and impurities will gather on the filter, and it needs to be cleaned. In the prior art, in order to facilitate the cleaning operation, a back-blowing structure is often used to clean the mesh. In actual use, we found that the above cleaning method has a better cleaning effect on some loosely blocked filter holes, but sometimes the filter holes will be completely blocked by some dust and impurities. These dust and impurities form an extremely stable solid structure. At this time, it is difficult to clear the hole body by back-blowing. Therefore, how to solve this problem needs to be considered. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a transformer control cabinet and an air cooling component. During use, the air cooling component can regularly and efficiently dredge and clean the filter part, and even if the filter holes are blocked, they can be dredged.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wind cooling assembly comprises a cabinet, wherein a support frame is installed at the lower end of the cabinet; a wind cooling mechanism, wherein the wind cooling comprises two installation openings opened at the bottom of the cabinet, and fans are installed in the two installation openings, the wind direction of the fan located on the left side faces upward, and the wind direction of the fan located on the right side faces downward; a filtering mechanism, wherein the filtering mechanism comprises a mounting groove opened at the lower end of the cabinet, a rotating shaft is installed at the inner top of the mounting groove, and a rotating circular plate is fixedly connected to the lower end of the rotating shaft, and the upper end of the rotating circular plate contacts the lower end of the cabinet, and the rotating circular plate is on the upper end of the rotating circular plate. A plurality of mounting circular openings are provided at equal intervals, and a dust filter is installed in each of the mounting circular openings; a rotating mechanism, which is used to drive the rotating circular plate to rotate, and the rotating mechanism includes an L-shaped frame installed on the rear side of the cabinet, and a motor is installed at the lower end of the horizontal portion of the L-shaped frame, and a gear is fixedly connected to the output shaft of the motor, and a gear ring is fixedly connected to the outer side of the rotating circular plate, and the gear is meshed with the gear ring; an auxiliary dredging mechanism, which is used to dredge the dust filter; a driving mechanism, and the driving mechanism cooperates with the auxiliary dredging mechanism.

[0007] Preferably, a return-shaped baffle is fixedly connected to the right side of the support frame located on the left side, and the upper end of the return-shaped baffle is in contact with the lower end of the rotating circular plate.

[0008] Preferably, the auxiliary dredging mechanism is provided with a slide groove at the lower end of the cabinet, and the slide groove is located directly above the installation circular opening on the rearmost side, and the inner top of the slide groove is fixedly connected with a second piston cylinder, and a second piston block that can slide up and down is arranged in the second piston cylinder, and the lower end of the second piston block is fixedly connected with a piston rod.

[0009] Preferably, a connecting disc is provided below the second piston cylinder, the connecting disc is provided with a groove body, the lower end of the piston rod extends into the groove body, the lower end part of the piston rod is elastically connected to the inner wall of the groove body through a plurality of third springs, and a plurality of dredging wires are fixedly connected to the lower end of the connecting disc.

[0010] Preferably, a plurality of arc-shaped abutment blocks are fixedly connected to the left and right front and rear side walls of the slide groove, and round-head abutment rods are fixedly connected to the left and right sides of the front side of the connecting disc.

[0011] Preferably, the driving mechanism comprises a high-pressure cooling cylinder fixedly connected to the upper end of the horizontal portion of the L-shaped frame, the high-pressure cooling cylinder is made of a heat-conducting material, a plurality of heat sinks are installed on the outer side of the high-pressure cooling cylinder, a connecting port is provided on the inner top of the high-pressure cooling cylinder, a first piston cylinder is fixedly connected to the front side of the vertical portion of the L-shaped frame, the output shaft of the motor is fixedly connected to a rotating disk, a connecting rod is rotatably connected to the eccentric lower end of the rotating disk, a slidable first piston block is arranged in the first piston cylinder, the other end of the connecting rod is rotatably connected to the first piston block, and the first piston cylinder is fixedly connected to the upper end of the rotating disk. The rear space is connected with the outside through the air inlet, the rear space of the first piston cylinder is connected with the internal space of the high-pressure cooling cylinder through the air outlet pipe, a third piston block which can slide up and down is arranged in the high-pressure cooling cylinder, the upper end of the third piston block is elastically connected with the inner top of the high-pressure cooling cylinder through the first spring, the inner bottom space of the high-pressure cooling cylinder is connected with the inner top space of the second piston cylinder through the exhaust pipe, a fine hole is opened on one side of the inner top space of the high-pressure cooling cylinder, the bottom space of the second piston cylinder is connected with a high-speed air duct, and the other end of the high-speed air duct is connected with the inside of the cabinet.

[0012] Preferably, both the air inlet and the air outlet pipe are equipped with one-way valves. The one-way valve in the air inlet flows from the outside to the rear space of the first piston cylinder in one direction, and the one-way valve in the air outlet pipe flows from the rear space of the first piston cylinder in one direction to the inner bottom space of the high-pressure cooling cylinder. A normally open solenoid valve is installed in the exhaust pipe, and the normally open solenoid valve and the motor are in the same series circuit.

[0013] The present invention also discloses a transformer control cabinet, comprising an air cooling assembly as described in any one of the above items.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Multiple dust filters are provided, and with the use of a rotating mechanism, when the dust filters need to be cleaned, only the dust filter that has accumulated dust needs to be rotated to the exhaust position, and the cleaned dust filter needs to be rotated to the air inlet position. Compared with the prior art, there is no need to continuously use an air pump for back-blowing operation, and the dust and impurities blown off will not adhere again.

[0016] 2. A high-pressure cooling cylinder is provided. When the rotating mechanism is running, the air pressure of the high-pressure cooling cylinder increases continuously, and the thermal conductivity of its own material is used to realize the passive heat dissipation of the high-pressure air. When the motor is turned off, the high-pressure gas is released and blown into the cabinet to promote heat dissipation. That is, each time the dust filter is replaced, the heat accumulated inside will be quickly dissipated during the replacement process to avoid the situation where the heat accumulates for too long.

[0017] 3. When the high-pressure gas is released, the second piston block will move downward first and then upward. The second piston block will drive multiple dredging wires to move downward first and then upward. When the dredging wires pass through the filter mesh holes, part of the blocked dust can be dredged, destroying the overall stability of the solid dust impurities, making it convenient for the subsequent complete dust removal operation.

[0018] 4. Due to the setting of multiple resistance blocks, the use of round-head resistance rod and the third spring, the connecting disc will vibrate slightly in the front-to-back and left-to-right directions during the downward movement. This shaking can make the dredging wire vibrate inside the filter mesh, further breaking up the residual dust and impurities inside the filter mesh, thereby further reducing the adhesion of these dust impurities to the filter mesh.

[0019] In summary, the air-cooled component can achieve automatic cleaning without the need for continuous back-blowing operation using an air pump, and the dust and impurities blown off will not adhere again. In addition, with the use of an auxiliary dredging mechanism, even some completely blocked mesh holes can be efficiently cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an air cooling component proposed by the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the rear structure;

[0022] Figure 3 for Figure 2 A first cross-sectional schematic diagram of

[0023] Figure 4 for Figure 2 A second cross-sectional schematic diagram of

[0024] Figure 5 for Figure 4 A magnified image of point A;

[0025] Figure 6 It is a schematic diagram of the coordination of the rotating circular plate, motor, L-shaped frame and high-pressure cooling cylinder.

[0026] In the figure: 1 cabinet, 2 support frame, 3 return block, 4 rotating circular plate, 5 gear ring, 6 L-shaped frame, 7 first piston cylinder, 8 air inlet, 9 high pressure cooling cylinder, 10 heat sink, 11 air outlet pipe, 12 connecting port, 13 motor, 14 gear, 15 exhaust pipe, 16 high speed air duct, 17 installation port, 18 fan, 19 first piston block, 20 connecting rod, 21 rotating disk, 22 installation circular port, 23 slide groove, 24 second piston cylinder, 25 fine hole, 26 second spring, 27 second piston block, 28 piston rod, 29 connecting disk, 30 third spring, 31 slot, 32 dredging wire, 33 first spring, 34 dust filter, 35 rotating shaft, 36 round head push rod, 37 push block, 38 third piston block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Reference Figure 1-Figure 6 A wind cooling component includes a cabinet 1, a support frame 2 is installed at the lower end of the cabinet 1, a return block 3 is fixedly connected to the right side of the support frame 2 located on the left side, and the upper end of the return block 3 is in contact with the lower end of a rotating circular plate 4.

[0029] As an embodiment of the present invention, it also includes an air cooling mechanism, which includes two installation ports 17 opened at the bottom of the cabinet 1. Fans 18 are installed in the two installation ports 17. The wind direction of the fan 18 on the left side is upward, and the wind direction of the fan 18 on the right side is downward. It should be noted that after the specific control cabinet is installed, a guide plate body can be installed inside the cabinet 1 to guide the airflow, thereby ensuring the heat dissipation effect.

[0030] As an embodiment of the present invention, it also includes a filtering mechanism, which includes a mounting groove opened at the lower end of the cabinet 1, a rotating shaft 35 is installed at the inner top of the mounting groove, and a rotating circular plate 4 is fixedly connected to the lower end of the rotating shaft 35. The upper end of the rotating circular plate 4 is in contact with the lower end of the cabinet 1, and a plurality of mounting circular openings 22 are opened on the rotating circular plate 4 at equal intervals, and a dust filter 34 is installed in each mounting circular opening 22.

[0031] As an embodiment of the present invention, it also includes a rotating mechanism, which is used to drive the rotating circular plate 4 to rotate. The rotating mechanism includes an L-shaped frame 6 installed on the rear side of the cabinet 1, and a motor 13 is installed at the lower end of the horizontal part of the L-shaped frame 6. The output shaft of the motor 13 is fixedly connected to a gear 14, and the outer side of the rotating circular plate 4 is fixedly connected to a ring gear 5, and the gear 14 is meshed with the ring gear 5.

[0032] As an embodiment of the present invention, it also includes an auxiliary dredging mechanism, which is used to dredge the dust filter 34. The auxiliary dredging mechanism is provided with a slide groove 23 at the lower end of the cabinet 1, and the slide groove 23 is located just above the installation circular opening 22 on the rear side. The inner top of the slide groove 23 is fixedly connected with a second piston cylinder 24, and a second piston block 27 that can slide up and down is arranged in the second piston cylinder 24. The lower end of the second piston block 27 is fixedly connected with a piston rod 28, and a connecting disc 29 is arranged below the second piston cylinder 24. The connecting disc 29 is provided with a groove body 31, and the lower end of the piston rod 28 extends into the groove body 31. The lower end part of the piston rod 28 is elastically connected to the inner wall of the groove body 31 through a plurality of third springs 30, and the lower end of the connecting disc 29 is fixedly connected with a plurality of dredging steel The wire 32 is a steel wire for dredging, and the steel wire 32 for dredging corresponds to the multiple meshes of the dust filter net 34, and the diameter of the steel wire 32 for dredging is one third of the diameter of the meshes. A plurality of arc-shaped abutments 37 are fixedly connected to the left and right front and rear side walls of the slide groove 23, and round-head abutments 36 are fixedly connected to the left and right sides of the front side of the connecting disc 29. The round-head abutments 36 on the left and the round-head abutments 36 on the right are offset in the up-and-down direction, and the round-head abutments 36 on the front and the round-head abutments 36 on the rear are offset in the up-and-down direction, so that when the round-head abutments 36 on the left side contacts the arc-shaped abutment 37 on the left side, the round-head abutments 36 on the right side will not contact the arc-shaped abutment 37 on the right side. Similarly, when the round-head abutments 36 on the front side contacts the arc-shaped abutment 37 on the front side, the round-head abutments 36 on the rear side will not contact the arc-shaped abutment 37 on the rear side.

[0033] As an embodiment of the present invention, it also includes a driving mechanism, which cooperates with the auxiliary dredging mechanism. The driving mechanism includes a high-pressure cooling cylinder 9 fixedly connected to the upper end of the horizontal part of the L-shaped frame 6, the high-pressure cooling cylinder 9 is made of a heat-conducting material, and a plurality of heat sinks 10 are installed on the outer side of the high-pressure cooling cylinder 9. A connecting port 12 is opened on the inner top of the high-pressure cooling cylinder 9. The front side of the vertical part of the L-shaped frame 6 is fixedly connected to the first piston cylinder 7, the output shaft of the motor 13 is fixedly connected to the rotating disk 21, and the lower end of the rotating disk 21 is rotatably connected to the connecting rod 20 at the eccentric position. A slidable first piston block 19 is provided in the first piston cylinder 7, and the other end of the connecting rod 20 is rotatably connected to the first piston block 19. The rear space of a piston cylinder 7 is connected to the outside through the air inlet 8, and the rear space of the first piston cylinder 7 is connected to the internal space of the high-pressure cooling cylinder 9 through the air outlet pipe 11. A third piston block 38 that can slide up and down is arranged in the high-pressure cooling cylinder 9. The upper end of the third piston block 38 is elastically connected to the inner top of the high-pressure cooling cylinder 9 through the first spring 33. The inner bottom space of the high-pressure cooling cylinder 9 is connected to the inner top space of the second piston cylinder 24 through the exhaust pipe 15. A fine hole 25 is opened on one side of the inner top space of the high-pressure cooling cylinder 9. The exhaust speed of the fine hole 25 is slow. The bottom space of the second piston cylinder 24 is connected to the high-speed air duct 16, and the other end of the high-speed air duct 16 is connected to the inside of the cabinet 1.

[0034] As an embodiment of the present invention, one-way valves are installed in both the air inlet 8 and the air outlet pipe 11. The one-way valve in the air inlet 8 flows in a one-way direction from the outside to the rear space of the first piston cylinder 7, and the one-way valve in the air outlet pipe 11 flows in a one-way direction from the rear space of the first piston cylinder 7 to the inner bottom space of the high-pressure cooling cylinder 9. A normally open solenoid valve is installed in the exhaust pipe 15, and the normally open solenoid valve and the motor 13 are in the same series circuit.

[0035] The present invention also discloses a transformer control cabinet, comprising any one of the above-mentioned air-cooling components.

[0036] In the specific use of the present invention, by starting the two fans 18, air can be taken in through the left installation opening 17 and discharged through the right installation opening 17, and the dust filter 34 on the positive side of the air inlet part will filter the dust to prevent dust from entering the cabinet 1.

[0037] The motor 13 can be started regularly. When the motor 13 is started, the gear ring 5 is driven to rotate through the gear 14. Each time the motor 13 is started, the gear ring 5 is rotated 120°. During the starting process of the motor 13, the rotating disk 21 is driven to rotate. The rotation of the rotating disk 21 causes the first piston block 19 to reciprocate forward and backward through the connecting rod 20. The first piston block 19 moves forward to replenish gas from the outside of the cylinder. The first piston block 19 moves backward to press the gas into the high-pressure cooling cylinder 9. At this time, since the normally open solenoid valve in the exhaust pipe 15 is powered on and closed, the continuous injection of gas will increase the air pressure of the high-pressure cooling cylinder 9, and then the third piston block 38 is moved up and the first spring 33 is compressed. As the gas continues to increase, the third piston block 38 slowly moves up, and the internal air pressure continues to increase. As the air is compressed, a large amount of heat is generated, making the internal temperature of the high-pressure cooling cylinder 9 much higher than the external temperature. At this time, passive heat dissipation is achieved by utilizing the thermal conductivity of its own material, and the cooperation of the heat sink 10 reduces the temperature of the compressed air to a certain extent.

[0038] When the ring gear 5 rotates 120°, the dust filter 34 originally used for filtering rotates to the bottom of the connecting disc 29. At this time, since the motor 13 is powered off, the normally open solenoid valve is powered off and turned on, so that the exhaust pipe 15 is turned on, and the compressed air will be released from the exhaust pipe 15 to the second piston cylinder 24. Since the exhaust speed of the pores 25 is slow and cannot meet the exhaust demand, the high-pressure gas will press the second piston block 27 to move downward and stretch the second spring 26 until the second piston block 27 moves down to the bottom of the high-speed air duct 16. At this time, the high-speed gas will be quickly released from the high-speed air duct 16 and enter the cabinet 1, increasing the air flow inside the cabinet 1 and promoting heat dissipation. It should be noted that since the heat generated by the high-pressure gas during compression is partially released, its temperature during release and expansion will be lower than the actual initial temperature (room temperature), that is, the temperature of the air blown into the cabinet 1 is lower than the room temperature, and the heat dissipation effect achieved is better, and the heat inside the cabinet 1 can be quickly dissipated.

[0039] That is, each time the dust filter 34 is replaced, the heat accumulated inside during the replacement process will be quickly dissipated to avoid the situation where heat accumulates for too long. After the high-pressure gas is released, with the elastic action of the second spring 26, the second piston block 27 will slowly move up until it returns to its initial position.

[0040] That is, each time after the dust filter 34 is replaced, the second piston block 27 will move downward first and then upward. The second piston block 27 will drive multiple unblocking wires 32 to move downward first and then upward. When the unblocking wires 32 pass through the filter mesh, part of the blocked dust can be cleared, thereby destroying the overall stability of the solid dust impurities. In addition, due to the provision of multiple abutment blocks 37, in conjunction with the use of the round-headed abutment rod 36 and the third spring 30, the connecting disc 29 will vibrate slightly in the front-to-back and left-to-right directions during the downward movement. The shaking can allow the unblocking wires 32 to vibrate inside the filter mesh, further breaking up the residual dust and impurities inside the filter mesh, thereby further reducing the adhesion of these dust impurities to the filter mesh.

[0041] When the motor 13 is started next time, the dredged dust filter 34 will rotate to the bottom of the installation opening 17 on the right, that is, below the exhaust port, and backblowing can be performed by utilizing the exhaust airflow to blow away the dust impurities with low adhesion thereon. Moreover, due to the penetration and shaking action of the dredging wire 32, the adhesion of the residual dust and impurities inside the filter mesh becomes lower and will be directly blown off with the airflow, thereby realizing efficient and comprehensive cleaning of the dust filter 34 as a whole.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air cooling component, characterized in that: include: A cabinet body (1), wherein a support frame (2) is installed at the lower end of the cabinet body (1); An air cooling mechanism, the air cooling comprising two mounting openings (17) opened at the bottom of the cabinet (1), fans (18) being installed in both mounting openings (17), the wind direction of the fan (18) located on the left side facing upwards, and the wind direction of the fan (18) located on the right side facing downwards; A filter mechanism, the filter mechanism comprising a mounting groove opened at the lower end of the cabinet (1), a rotating shaft (35) being installed at the inner top of the mounting groove, a rotating circular plate (4) being fixedly connected to the lower end of the rotating shaft (35), the upper end of the rotating circular plate (4) being in contact with the lower end of the cabinet (1), a plurality of mounting circular openings (22) being opened at equal intervals on the rotating circular plate (4), and a dust filter (34) being installed in each of the mounting circular openings (22); A rotating mechanism, the rotating mechanism is used to drive the rotating circular plate (4) to rotate, the rotating mechanism comprising an L-shaped frame (6) mounted on the rear side of the cabinet (1), a motor (13) being mounted on the lower end of the horizontal portion of the L-shaped frame (6), an output shaft of the motor (13) being fixedly connected to a gear (14), an outer side of the rotating circular plate (4) being fixedly connected to a gear ring (5), the gear (14) being meshed with the gear ring (5); An auxiliary dredging mechanism, the auxiliary dredging mechanism being used to dredge the dust filter (34); The auxiliary dredging mechanism is provided with a slide groove (23) at the lower end of the cabinet (1), the slide groove (23) is located just above the rearmost mounting circular opening (22), the inner top of the slide groove (23) is fixedly connected to a second piston cylinder (24), a second piston block (27) that can slide up and down is arranged in the second piston cylinder (24), and the lower end of the second piston block (27) is fixedly connected to a piston rod (28); A connecting disc (29) is provided below the second piston cylinder (24), the connecting disc (29) being provided with a groove (31), the lower end of the piston rod (28) extending into the groove (31), the lower end of the piston rod (28) being elastically connected to the inner wall of the groove (31) via a plurality of third springs (30), and a plurality of dredging steel wires (32) being fixedly connected to the lower end of the connecting disc (29); A plurality of arc-shaped abutment blocks (37) are fixedly connected to the left and right front and rear side walls of the slide groove (23), and round-head abutment rods (36) are fixedly connected to the left and right front sides of the connecting disc (29); A driving mechanism, wherein the driving mechanism cooperates with the auxiliary dredging mechanism; The driving mechanism comprises a high-pressure cooling cylinder (9) fixedly connected to the upper end of the horizontal portion of the L-shaped frame (6); the high-pressure cooling cylinder (9) is made of a heat-conducting material; a plurality of heat sinks (10) are installed on the outer side of the high-pressure cooling cylinder (9); a connecting port (12) is provided on the inner top of the high-pressure cooling cylinder (9); a first piston cylinder (7) is fixedly connected to the front side of the vertical portion of the L-shaped frame (6); an output shaft of the motor (13) is fixedly connected to a rotating disk (21); a connecting rod (20) is rotatably connected to the lower eccentric portion of the rotating disk (21); a first slidable piston block (19) is provided in the first piston cylinder (7); The other end of the connecting rod (20) is rotatably connected to the first piston block (19); the rear space of the first piston cylinder (7) is connected to the outside through an air inlet (8); the rear space of the first piston cylinder (7) is connected to the internal space of the high-pressure cooling cylinder (9) through an air outlet pipe (11); a third piston block (38) that can slide up and down is provided in the high-pressure cooling cylinder (9); the upper end of the third piston block (38) is elastically connected to the inner top of the high-pressure cooling cylinder (9) through a first spring (33); and the inner bottom space of the high-pressure cooling cylinder (9) is connected to the inner top space of the second piston cylinder (24) through an exhaust pipe (15); Both the air inlet (8) and the air outlet pipe (11) are equipped with one-way valves. The one-way valve in the air inlet (8) allows air to flow from the outside to the rear space of the first piston cylinder (7), while the one-way valve in the air outlet pipe (11) allows air to flow from the rear space of the first piston cylinder (7) to the inner bottom space of the high-pressure cooling cylinder (9).

2. The air cooling assembly according to claim 1, characterized in that: A return-shaped baffle (3) is fixedly connected to the right side of the support frame (2) located on the left side, and the upper end of the return-shaped baffle (3) is in contact with the lower end of the rotating circular plate (4).

3. The air cooling assembly according to claim 1, characterized in that: A fine hole (25) is provided on one side of the inner top space of the high-pressure cooling cylinder (9), and the bottom space of the second piston cylinder (24) is connected to a high-speed air duct (16), and the other end of the high-speed air duct (16) is connected to the interior of the cabinet (1).

4. The air cooling assembly according to claim 3, characterized in that: A normally open solenoid valve is installed in the exhaust pipe (15), and the normally open solenoid valve and the motor (13) are in the same series circuit.

5. A transformer control cabinet, characterized in that: include: An air cooling assembly as claimed in any one of claims 1 to 4.

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