Oil-immersed transformer with oil purification device

Abstract

The invention provides an oil-immersed transformer with an oil purification device, and relates to the field of oil-immersed transformers. The oil-immersed transformer with the oil purification device comprises a transformer body, an oil pumping assembly is installed on the left side of the outer wall of the transformer body, the input end of the oil pumping assembly is fixedly connected to the interior of the transformer body, and the output end of the oil pumping assembly is fixedly connected with an oil discharging pipe; the output end of the oil discharge pipe is fixedly connected with a purification assembly, the output end of the purification assembly is fixedly provided with a plurality of oil return pipes, and the output ends of the oil return pipes are fixedly connected to the interior of the transformer body. Cooling oil is pumped through the oil pumping assembly and flows back after being purified through the purifying assembly and cooled through the cooling assembly, synchronous driving of all the assemblies is achieved through the driving assembly, the problem that the cooling oil cannot be purified in the operation process of an existing transformer is solved, the cooling oil performance and the cooling efficiency are improved, the operation stability of the transformer is improved, and the service life of the transformer is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of household kitchens, and specifically to an oil-immersed transformer with an oil purification device. Background Art

[0002] With the development of society, as a key device in the power system, oil-immersed transformers are widely used in the fields of power transmission and distribution. Through the principle of electromagnetic induction, they achieve the step-up and step-down conversion of voltage, ensuring the efficient and stable transmission of electricity from power plants to various power-consuming terminals. Whether it is the operation of large equipment in industrial production or the lighting and use of household appliances in daily life of residents, they all rely on the support of oil-immersed transformers.

[0003] Chinese Utility Model Patent CN222319923U discloses an oil-immersed transformer with an oil purification device. An oil-immersed transformer with an oil purification device includes an oil-immersed transformer, a mounting assembly, and an oil purification filter element; wherein the mounting assembly is detachably assembled on one side of the oil-immersed transformer through bolts, and the oil purification filter element is detachably arranged in the mounting assembly. The provided mounting assembly can ensure that the oil purification filter element is firmly clamped on the side of the oil-immersed transformer, thus eliminating the need to disassemble and reconnect pipelines, which can greatly simplify the installation process, reduce the time and labor required for installing the oil purification filter element. By setting the mounting assembly, it can ensure that the oil purification filter element is firmly fixed on the side of the oil-immersed transformer, reducing the risk of the oil purification filter element loosening or falling off, thereby improving the safety of oil purification and reducing accidental accidents or injuries that may be caused by the oil purification filter element during operation.

[0004] However, the above patent only purifies the cooling oil when it is added to the transformer. During the long-term operation of the transformer, the cooling oil will be affected by factors such as absorbing heat and impurities inside the transformer and the action of the electric field, resulting in a decline in performance. If the cooling oil cannot be continuously purified during use, it will reduce the insulation performance of the cooling oil, increase the risk of faults such as transformer short circuits and discharges, and affect the normal operation life of the transformer and the stability of power supply. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an oil-immersed transformer with an oil purification device, which solves the problem that the existing oil-immersed transformer cannot continuously purify the cooling oil during operation, resulting in a decline in the performance of the cooling oil and affecting the operation life of the transformer and the stability of power supply.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: An oil-immersed transformer with an oil purification device, including a transformer body, on the left side of the outer wall of the transformer body, an oil pumping component is installed, the input end of the oil pumping component is fixedly connected inside the transformer body, the output end of the oil pumping component is fixedly connected with an oil discharge pipe, the output end of the oil discharge pipe is fixedly connected with a purification component, the output end of the purification component is fixedly installed with a return oil pipe, there are multiple return oil pipes, the output end of the return oil pipe is fixedly connected inside the transformer body, a cooling component is installed on the outer wall of the transformer body, and a driving component is installed between the oil pumping component and the cooling component;

[0007] There are two of the oil discharge pipe, the purification component, the return oil pipe, the cooling component and the driving component respectively distributed on both sides of the outer wall of the transformer body;

[0008] The purification component includes a sealing box, purification cotton and a sealing plate. There are two sealing boxes fixedly installed on the front and rear sides of the outer wall of the transformer body. The purification cotton is fixedly installed inside the sealing box. The sealing plate is bolted to the outer wall of the sealing box;

[0009] The cooling component includes a support shaft, a fan and a heat dissipation block. There are multiple support shafts on the outer wall of the transformer body. The fan is fixedly installed at the bottom of the support shaft. The heat dissipation block is fixedly connected to the outer wall of the return oil pipe. The fan is located above the heat dissipation block.

[0010] Preferably, the oil pumping component includes a sealing cover, a driving shaft, a paddle, an inlet pipe and an outlet pipe. There are two sealing covers fixedly connected to the left side of the outer wall of the transformer body. The driving shaft movably penetrates through the two sealing covers. There are two paddles fixedly connected to the outer wall of the driving shaft. The paddles are located inside the sealing cover. The inlet pipe is fixedly connected between the sealing cover and the transformer body. The outlet pipe is fixedly connected between the sealing cover and the oil discharge pipe.

[0011] Preferably, the driving component includes a driving motor, a pulley, a pulley groove and a driving belt. The driving motor is located on the outer wall of the transformer body. The pulley is fixedly installed at the output end of the driving motor. The pulley groove is opened on the outer wall of the driving shaft. The driving belt is fixedly installed on the pulley and the pulley groove.

[0012] Preferably, the driving component further includes a first rotating shaft and a second rotating shaft. There are two first rotating shafts movably installed on the outer wall of the transformer body. The two ends of the driving shaft are sequentially movably connected to the bottom of the two first rotating shafts. There are two second rotating shafts. One end of the second rotating shaft is movably connected to the top of the first rotating shaft. The top of the support shaft is movably connected to the outer wall of the second rotating shaft.

[0013] Preferably, first bevel gears are fixedly connected to both ends of the outer wall of the drive shaft in sequence, second bevel gears are fixedly connected to both ends of the first rotating shaft, the first bevel gear meshes with the second bevel gear at the bottom of the first rotating shaft, a third bevel gear is fixedly connected to one end of the second rotating shaft, and the third bevel gear meshes with the second bevel gear at the top of the first rotating shaft.

[0014] Preferably, a plurality of fourth bevel gears are fixedly connected to the outer wall of the second rotating shaft, a fifth bevel gear is fixedly connected to the top of the support shaft, and the fourth bevel gear meshes with the fifth bevel gear.

[0015] Preferably, a solenoid valve is fixedly installed inside the drain pipe.

[0016] Preferably, a first protective cover is fixedly installed on the left side of the outer wall of the transformer body, the oil pumping assembly is located inside the first protective cover, and the drive motor is fixedly installed inside the first protective cover.

[0017] Preferably, second protective covers are fixedly installed on the front and rear ends of the outer wall of the transformer body in sequence, the support shaft is movably installed inside the second protective cover, and a plurality of slots are opened at the top of the second protective cover.

[0018] Preferably, a connection block is fixedly connected to the left side of the outer wall of the transformer body, and the first rotating shaft is fixedly installed inside the connection block.

[0019] The present invention provides an oil-immersed transformer with an oil purification device. It has the following beneficial effects:

[0020] 1. By setting up a purification component, during use, the drain pipe guides the cooling oil drawn out from the transformer body into the sealed box. When the cooling oil passes through the purification cotton, impurities are filtered and adsorbed, realizing the purification of the cooling oil of the transformer during operation, effectively removing impurities, improving the insulation performance and heat dissipation efficiency of the cooling oil, reducing the risk of transformer failure, and extending its service life.

[0021] 2. By setting up a temperature reduction component, during use, when the cooling oil in the return pipe passes through the return pipe, the heat dissipation block fits against the outer wall of the return pipe to absorb heat, and the fan rotates driven by the support shaft to blow air towards the heat dissipation block, realizing the accelerated dissipation of the heat of the heat dissipation block, reducing the temperature of the cooling oil flowing back to the transformer body, enhancing the heat dissipation effect of the transformer, maintaining its stable operating temperature, and further improving the performance and reliability of the equipment.

[0022] 3. By setting up the driving components, during use, the driving motor operates to drive the pulley to rotate. Through the driving belt, the driving shaft rotates. The driving shaft drives the first rotating shaft to rotate through the meshing of the first bevel gear and the second bevel gear. Then, through the meshing of the third bevel gear and the second bevel gear, the second rotating shaft rotates. Finally, the second rotating shaft drives the support shaft and the fan to rotate through the meshing of the fourth bevel gear and the fifth bevel gear, realizing the synchronous drive of the oil pumping component and the cooling component, simplifying the device structure, reducing the setting of additional power sources, lowering energy consumption and equipment costs, ensuring the coordinated operation of each component, and improving the overall operation efficiency. Description of the Drawings

[0023] Figure 1 Schematic diagram of the overall structure of an oil-immersed transformer with an oil purification device proposed by the present invention;

[0024] Figure 2 Exploded structure diagram of the purification component in an oil-immersed transformer with an oil purification device proposed by the present invention;

[0025] Figure 3 For Figure 2 Enlarged structure diagram at position A in

[0026] Figure 4 For Figure 2 Enlarged structure diagram at position B in

[0027] Figure 5 Exploded structure diagram of the oil pumping component in an oil-immersed transformer with an oil purification device proposed by the present invention;

[0028] Figure 6 Enlarged structure diagram of the cooling component in an oil-immersed transformer with an oil purification device proposed by the present invention;

[0029] Figure 7 For Figure 6 Enlarged structure diagram at position C in

[0030] Among them, 1. Transformer body; 2. Oil pumping assembly; 201. Sealing cover; 202. Driving shaft; 203. Blade; 204. Inlet pipe; 205. Outlet pipe; 3. Drain pipe; 301. Solenoid valve; 4. Purification assembly; 401. Sealing box; 402. Purification cotton; 403. Sealing plate; 5. Return pipe; 6. Cooling assembly; 601. Support shaft; 602. Fan; 603. Heat sink; 7. Driving assembly; 701. Driving motor; 702. Pulley; 703. Belt groove; 704. Driving belt; 705. First rotating shaft; 706. First bevel gear; 707. Second bevel gear; 708. Second rotating shaft; 709. Third bevel gear; 710. Fourth bevel gear; 711. Fifth bevel gear; 8. First protective cover; 9. Second protective cover; 901. Slot; 10. Connecting block. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1:

[0033] As Figure 1-7As shown in the figure, an embodiment of the present invention provides an oil-immersed transformer with an oil purification device, which includes a transformer body 1. On the left side of the outer wall of the transformer body 1, an oil pumping component 2 is installed. The oil pumping component 2 is responsible for pumping out the cooling oil inside the transformer body 1. The input end of the oil pumping component 2 is fixedly connected to the inside of the transformer body 1, and the output end of the oil pumping component 2 is fixedly connected to an oil discharge pipe 3, which conveys the pumped cooling oil to a purification component 4. The output end of the oil discharge pipe 3 is fixedly connected to the purification component 4. The purification component 4 purifies the cooling oil, removes impurities, and improves the performance of the cooling oil. The output end of the purification component 4 is fixedly installed with a return pipe 5, which returns the purified cooling oil to the inside of the transformer body 1. There are multiple return pipes 5, and the output ends of the return pipes 5 are fixedly connected to the inside of the transformer body 1 to ensure that the purified cooling oil can evenly flow back into the transformer body 1. On the outer wall of the transformer body 1, a temperature reduction component 6 is installed. The temperature reduction component 6 is used to reduce the temperature of the returned cooling oil and improve the heat dissipation efficiency of the transformer. A driving component 7 is installed between the oil pumping component 2 and the temperature reduction component 6. The driving component 7 realizes the synchronous driving of the oil pumping component 2 and the temperature reduction component 6; the oil discharge pipe 3, the purification component 4, the return pipe 5, the temperature reduction component 6, and the driving component 7 are all distributed on both sides of the outer wall of the transformer body 1. The bilateral setting can make the cooling oil circulation, heat dissipation, and purification more efficient and balanced; the purification component 4 includes a sealing box 401, purification cotton 402, and a sealing plate 403. There are two sealing boxes 401 fixedly installed on the front and back sides of the outer wall of the transformer body 1. The sealing box 401 provides an installation space for the purification cotton 402. The purification cotton 402 is fixedly installed inside the sealing box 401. The purification cotton 402 filters the impurities in the cooling oil and realizes the purification function of the cooling oil. The sealing plate 403 is bolted to the outer wall of the sealing box 401, which is convenient for opening the sealing box 401 to replace the purification cotton 402. The temperature reduction component 6 includes a support shaft 601, a fan 602, and a heat dissipation block 603. There are multiple support shafts 601 on the outer wall of the transformer body 1. The fan 602 is fixedly installed at the bottom of the support shaft 601 and generates an air flow by rotation to accelerate the heat dissipation of the heat dissipation block 603. The heat dissipation block 603 is fixedly connected to the outer wall of the return pipe 5 and absorbs the heat of the cooling oil in the return pipe 5. The fan 602 is located above the heat dissipation block 603 to ensure that the air flow generated by the fan 602 can effectively blow the heat dissipation block 603.

[0034] The pumping component 2 includes a sealing cover 201, a drive shaft 202, blades 203, an inlet pipe 204 and an outlet pipe 205. Two sealing covers 201 are fixedly connected to the left outer wall of the transformer body 1. The drive shaft 202 movably penetrates through the two sealing covers 201. The drive shaft 202 transmits power to drive the blades 203 to rotate. Two blades 203 are fixedly connected to the outer wall of the drive shaft 202. The rotation of the blades 203 generates suction to pump out the cooling oil in the transformer body 1. The blades 203 are located inside the sealing cover 201. The inlet pipe 204 is fixedly connected between the sealing cover 201 and the transformer body 1, enabling the cooling oil in the transformer body 1 to flow into the sealing cover 201. The outlet pipe 205 is fixedly connected between the sealing cover 201 and the drain pipe 3 to transport the pumped cooling oil to the drain pipe 3.

[0035] The driving component 7 includes a driving motor 701, a pulley 702, a pulley groove 703 and a driving belt 704. The driving motor 701 is located on the outer wall of the transformer body 1 and serves as the power source of the entire driving component 7. The pulley 702 is fixedly installed at the output end of the driving motor 701 to transmit the rotational power of the driving motor 701 to the driving belt 704. The pulley groove 703 is formed on the outer wall of the drive shaft 202 and cooperates with the driving belt 704 to rotate the drive shaft 202. The driving belt 704 is fixedly installed on the pulley 702 and the pulley groove 703 to connect the pulley 702 and the pulley groove 703 and achieve power transmission.

[0036] The driving component 7 further includes a first rotating shaft 705 and a second rotating shaft 708. Two first rotating shafts 705 are movably installed on the outer wall of the transformer body 1 to transmit the power of the drive shaft 202 to the second rotating shaft 708. The two ends of the drive shaft 202 are movably connected to the bottom of the two first rotating shafts 705 in sequence to achieve the power connection between the drive shaft 202 and the first rotating shaft 705. There are two second rotating shafts 708. One end of the second rotating shaft 708 is movably connected to the top of the first rotating shaft 705 to transmit the power of the first rotating shaft 705 to the support shaft 601. The top of the support shaft 601 is movably connected to the outer wall of the second rotating shaft 708, enabling the power of the second rotating shaft 708 to drive the support shaft 601 and the fan 602 to rotate and complete the power transmission to the cooling component 6.

[0037] On both ends of the outer wall of the drive shaft 202, first bevel gears 706 are fixedly connected in sequence. On both ends of the first rotating shaft 705, second bevel gears 707 are fixedly connected. The first bevel gear 706 meshes with the second bevel gear 707 at the bottom of the first rotating shaft 705. Through the meshing of the bevel gears, the power transmission direction is changed, enabling the first rotating shaft 705 to receive the power of the drive shaft 202. One end of the second rotating shaft 708 is fixedly connected with a third bevel gear 709. The third bevel gear 709 meshes with the second bevel gear 707 at the top of the first rotating shaft 705. Again, through the meshing of the bevel gears, the power of the first rotating shaft 705 is transmitted to the second rotating shaft 708.

[0038] On the outer wall of the second rotating shaft 708, a plurality of fourth bevel gears 710 are fixedly connected. On the top of the support shaft 601, a fifth bevel gear 711 is fixedly connected. The fourth bevel gear 710 meshes with the fifth bevel gear 711. Through the meshing of the bevel gears, the power of the second rotating shaft 708 is transmitted to the support shaft 601, driving the fan 602 to rotate.

[0039] An electromagnetic valve 301 is fixedly installed inside the drain pipe 3 to control the flow of the cooling oil in the drain pipe 3, facilitating the adjustment of the speed and flow rate of the cooling oil purification cycle.

[0040] On the left side of the outer wall of the transformer body 1, a first protective cover 8 is fixedly installed. The oil pumping assembly 2 is located inside the first protective cover 8. The drive motor 701 is fixedly installed inside the first protective cover 8. The first protective cover 8 protects the oil pumping assembly 2 and the drive motor 701, preventing external factors from interfering with their normal operation.

[0041] On the front and rear ends of the outer wall of the transformer body 1, second protective covers 9 are fixedly installed in sequence. The support shaft 601 is movably installed inside the second protective cover 9. A plurality of slots 901 are opened at the top of the second protective cover 9. The second protective cover 9 protects the support shaft 601 and the fan 602, and the slots 901 facilitate air circulation, ensuring the air supply effect of the fan 602.

[0042] On the left side of the outer wall of the transformer body 1, a connection block 10 is fixedly connected. The first rotating shaft 705 is fixedly installed inside the connection block 10. The connection block 10 provides installation support for the first rotating shaft 705.

[0043] Working principle: First, start the drive motor 701. The output shaft of the drive motor 701 drives the pulley 702 to rotate at high speed. The pulley 702 cooperates with the pulley groove 703 on the outer wall of the drive shaft 202 through the drive belt 704, causing the drive shaft 202 to start rotating. The first bevel gears 706 at both ends of the drive shaft 202 rotate accordingly and mesh with the second bevel gear 707 at the bottom of the first rotating shaft 705, driving the first rotating shaft 705 to rotate. The second bevel gear 707 at the top of the first rotating shaft 705 meshes with the third bevel gear 709 at one end of the second rotating shaft 708, causing the second rotating shaft 708 to rotate. The fourth bevel gear 710 on the outer wall of the second rotating shaft 708 meshes with the fifth bevel gear 711 at the top of the support shaft 601, thereby driving the support shaft 601 and the fan 602 fixed at its bottom to rotate.

[0044] Meanwhile, the rotation of the drive shaft 202 drives the blades 203 installed on its outer wall to rotate at high speed within the seal cover 201. The rotation of the blades 203 generates suction, sucking the cooling oil inside the transformer body 1 into the seal cover 201 through the oil inlet pipe 204, and then discharging it through the oil outlet pipe 205 and the drain pipe 3. In the drain pipe 3, the solenoid valve 301 can control the flow rate and velocity of the cooling oil as needed to ensure the stability of the cooling oil purification cycle.

[0045] The cooling oil enters the seal box 401 of the purification component 4 from the drain pipe 3. The purification cotton 402 in the box filters the cooling oil and adsorbs the impurities therein, completing the purification process. The purified cooling oil flows back into the transformer body 1 through the return pipe 5.

[0046] During the process of the cooling oil flowing back, the heat dissipation block 603 on the outer wall of the return pipe 5 absorbs the heat of the cooling oil. At this time, the fan 602 continues to rotate, blowing air towards the heat dissipation block 603 to accelerate the heat dissipation of the heat dissipation block 603, so that the temperature of the cooling oil decreases before flowing back into the transformer body 1.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed transformer with an oil purification device, comprising a transformer body (1), characterized in that: An oil pumping assembly (2) is installed on the left side of the outer wall of the transformer body (1); the input end of the oil pumping assembly (2) is fixedly connected to the inside of the transformer body (1); the output end of the oil pumping assembly (2) is fixedly connected to an oil drain pipe (3); the output end of the oil drain pipe (3) is fixedly connected to a purification assembly (4); the output end of the purification assembly (4) is fixedly installed with an oil return pipe (5); there are a plurality of oil return pipes (5); the output end of the oil return pipe (5) is fixedly connected to the inside of the transformer body (1); a cooling assembly (6) is installed on the outer wall of the transformer body (1); and a driving assembly (7) is installed between the oil pumping assembly (2) and the cooling assembly (6); The oil drain pipe (3), purification component (4), oil return pipe (5), cooling component (6) and driving component (7) are each provided with two components distributed on both sides of the outer wall of the transformer body (1); The purification component (4) comprises a sealing box (401), purification cotton (402) and a sealing plate (403); the sealing box (401) has two pieces fixedly mounted on the front and rear sides of the outer wall of the transformer body (1); the purification cotton (402) is fixedly mounted inside the sealing box (401); and the sealing plate (403) is bolted to the outer wall of the sealing box (401); The cooling component (6) comprises a support shaft (601), a fan (602) and a heat sink (603); the support shaft (601) has a plurality of outer walls located on the transformer body (1); the fan (602) is fixedly mounted on the bottom of the support shaft (601); the heat sink (603) is fixedly connected to the outer wall of the oil return pipe (5); and the fan (602) is located on the top of the heat sink (603).

2. The oil-immersed transformer with oil purification device according to claim 1, characterized in that: The oil pumping assembly (2) comprises a sealing cover (201), a drive shaft (202), a paddle (203), an oil inlet pipe (204) and an oil outlet pipe (205); the sealing cover (201) has two fixed connections to the left side of the outer wall of the transformer body (1); the drive shaft (202) movably passes through the two sealing covers (201); the paddle (203) has two fixed connections to the outer wall of the drive shaft (202); the paddle (203) is located inside the sealing cover (201); the oil inlet pipe (204) is fixedly connected between the sealing cover (201) and the transformer body (1); and the oil outlet pipe (205) is fixedly connected between the sealing cover (201) and the oil discharge pipe (3).

3. The oil-immersed transformer with oil purification device according to claim 2, characterized in that: The driving assembly (7) comprises a driving motor (701), a pulley (702), a belt groove (703) and a driving belt (704); the driving motor (701) is located on the outer wall of the transformer body (1); the pulley (702) is fixedly mounted on the output end of the driving motor (701); the pulley (702) is opened on the outer wall of the driving shaft (202); and the driving belt (704) is fixedly mounted on the pulley (702) and the belt groove (703).

4. The oil-immersed transformer with an oil purification device according to claim 2, characterized in that: The driving assembly (7) further comprises a first rotating shaft (705) and a second rotating shaft (708), wherein the first rotating shaft (705) has two movably mounted on the outer wall of the transformer body (1), and the two ends of the driving shaft (202) are movably connected to the bottoms of the two first rotating shafts (705) in turn, and the second rotating shaft (708) has two ends, and one end of the second rotating shaft (708) is movably connected to the top of the first rotating shaft (705), and the top of the supporting shaft (601) is movably connected to the outer wall of the second rotating shaft (708).

5. The oil-immersed transformer with oil purification device according to claim 4, characterized in that: The two ends of the outer wall of the driving shaft (202) are fixedly connected with the first bevel gear (706) in sequence, the two ends of the first rotating shaft (705) are fixedly connected with the second bevel gear (707), the first bevel gear (706) and the second bevel gear (707) at the bottom of the first rotating shaft (705) are meshed with each other, and one end of the second rotating shaft (708) is fixedly connected with the third bevel gear (709), and the third bevel gear (709) and the second bevel gear (707) at the top of the first rotating shaft (705) are meshed with each other.

6. The oil-immersed transformer with oil purification device according to claim 4, characterized in that: A plurality of fourth bevel gears (710) are fixedly connected to the outer wall of the second rotating shaft (708), a fifth bevel gear (711) is fixedly connected to the top of the supporting shaft (601), and the fourth bevel gears (710) and the fifth bevel gear (711) are meshed with each other.

7. The oil-immersed transformer with oil purification device according to claim 1, characterized in that: A solenoid valve (301) is fixedly installed inside the oil drain pipe (3).

8. The oil-immersed transformer with oil purification device according to claim 3, characterized in that: A first protective cover (8) is fixedly mounted on the left side of the outer wall of the transformer body (1), the oil pumping assembly (2) is located inside the first protective cover (8), and the drive motor (701) is fixedly mounted inside the first protective cover (8).

9. The oil-immersed transformer with oil purification device according to claim 1, characterized in that: Second protective covers (9) are fixedly mounted at the front and rear ends of the outer wall of the transformer body (1) in sequence, the support shaft (601) is movably mounted inside the second protective cover (9), and a plurality of slots (901) are formed on the top of the second protective cover (9).

10. The oil-immersed transformer with oil purification device according to claim 3, characterized in that: A connection block (10) is fixedly connected to the left side of the outer wall of the transformer body (1), and the first rotating shaft (705) is fixedly installed inside the connection block (10).

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