Oil-immersed intelligent large power transformer

Abstract

The invention relates to the technical field of transformers and discloses an oil-immersed intelligent large power transformer which comprises an oil tank, an oil conservator is fixedly connected to the inner wall of the oil tank, cooling fins are fixedly connected to the front portion of the oil tank, a fixing seat is fixedly connected to the inner wall of the oil tank, and an iron core is fixedly connected to the inner wall of the fixing seat. According to the transformer, transformer oil can make contact with an iron core and a winding, the iron core and the winding can be insulated, meanwhile, the iron core and the winding can be prevented from being impacted and damaged by the transformer oil, the transformer oil can be prevented from being damaged, the transformer oil can be prevented from being damaged, and the service life of the transformer oil can be prolonged. The stability of an insulation structure in the oil tank can be protected, the insulation stability of the device to a coil and a winding can be guaranteed, transformer oil in the oil tank can be prevented from leaking, and the integrity of an insulation material can be directly protected.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to an oil-immersed intelligent large-scale power transformer. Background Technology

[0002] Oil-immersed intelligent large-scale power transformers are core equipment upgraded from traditional oil-immersed transformers to meet the needs of modern smart grid development. Traditional oil-immersed transformers rely on transformer oil for insulation and heat dissipation, but their condition monitoring is lagging and maintenance depends on manual labor, making it difficult to meet the high-efficiency operation requirements of large power grids. With the expansion of power system capacity and intelligent upgrades, by embedding sensors for temperature, partial discharge, and oil quality, combined with IoT technology, intelligent functions such as real-time acquisition of condition parameters and life assessment are achieved. This solves the pain points of slow fault response and high maintenance costs of traditional equipment. Its core structure still consists of iron core and windings immersed in insulating oil, combining the reliability of traditional equipment with the advanced features of intelligent monitoring.

[0003] Patent CN101499372A discloses a low-voltage winding of an oil-immersed power transformer. The low-voltage winding includes aluminum foil and interlayer insulating paper, which are wound alternately into a multi-layer cylinder. The winding disclosed in this patent can enhance the short-circuit withstand capability of the power transformer, improve winding quality and efficiency, and reduce production costs. On the other hand, applying aluminum foil to the winding of an oil-immersed power transformer can make full use of my country's abundant aluminum resources, which is also of great significance for maintaining the sustainable and healthy development of my country's transformer industry.

[0004] However, when the above-mentioned device is in use, it is difficult to avoid the impact of the transformer oil during the discharge process between the aluminum foil and the interlayer insulation paper, which can easily cause the winding insulation structure to loosen and thus affect the insulation effect of the winding. Therefore, an oil-immersed intelligent large power transformer is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an oil-immersed intelligent large power transformer to address the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an oil-immersed intelligent large-scale power transformer, including an oil tank, an oil conservator fixedly connected to the inner wall of the oil tank, a heat sink fixedly connected to the front of the oil tank, a fixed seat fixedly connected to the inner wall of the oil tank, an iron core fixedly connected to the inner wall of the fixed seat, a flow guide pipe fixedly connected to the circumferential surface of the oil conservator, a positioning upper sleeve rotatably connected to the circumferential surface of the oil tank via a torsion spring, a buffer box fixedly connected to the inner wall of the oil tank, a flow guide plate fixedly connected to the inner wall of the buffer box, a positioning lower sleeve fixedly connected to the left side of the oil tank, an electric push rod fixedly connected to the front of the oil tank, an L-plate fixedly connected to the telescopic end of the electric push rod, a pull rod rotatably connected to the circumferential surface of the L-plate, an elastic telescopic rod fixedly connected to the inner wall of the oil tank, a sealing arc plate fixedly connected to the telescopic end of the elastic telescopic rod, a sliding column fixedly connected to the circumferential surface of the sealing arc plate, and the surface of the iron core fixedly... The oil tank is equipped with a coil. A cleaning mechanism for dust removal is located at the front of the oil tank, and an exhaust mechanism for venting is located at the top of the oil tank. The L-plate and the sealing arc plate are in contact with the oil tank, and the sealing arc plate is used to seal and fix the connection between the guide pipe and the oil tank. The pull rod is rotatably connected to the circumferential surface of the sliding column. The guide pipe is in contact with the lower positioning sleeve, and the lower positioning sleeve provides support and stability for the guide pipe. The guide pipe is fixedly connected to the oil tank, allowing the transformer oil to contact the core and windings, providing insulation for the core and windings, preventing damage from the impact of the transformer oil, protecting the stability of the internal insulation structure of the oil tank, ensuring the insulation stability of the coil and windings, preventing leakage of transformer oil inside the oil tank during long-term use, blocking the intrusion of external contaminants, directly protecting the integrity of the insulation material, and improving the insulation stability of the core and windings.

[0007] Preferably, the cleaning mechanism includes a rack, a gear, a second rack, an L-shaped rod, and a soft brush block. The rack is fixedly connected to the right side of the L-plate, the gear is rotatably connected to the front of the oil tank, the second rack is slidably connected to the front of the oil tank, the L-shaped rod is fixedly connected to the front of the second rack, and the soft brush block is fixedly connected to the inner wall of the L-shaped rod. The cleaning mechanism also includes a fixing plate, a pin, a second fixing plate, a connecting horizontal plate, and a second sliding column. The fixing plate is fixedly connected to the inner wall of the upper positioning sleeve, the pin is fixedly connected to the inner wall of the first fixing plate, the second fixing plate is fixedly connected to the inner wall of the lower positioning sleeve, the connecting horizontal plate is fixedly connected to the inner wall of the second fixing plate, and the second sliding column is slidably connected to the inner wall of the connecting horizontal plate. The rack and pinion engage with a gear, and the rack and pinion drive the gear to rotate. The gear engages with a rack and pinion 2. The soft brush block contacts the heat sink and is used to clean dust from the surface of the heat sink. This ensures the heat dissipation efficiency of the device, controls the operating temperature, prevents the insulation material from aging and failing due to high temperature, improves the insulation effect of the device on the core and windings, indirectly protects the insulation layer of the core and windings, protects the integrity of the insulation layer of the core and windings, and provides long-term stable support for the guide tube. This prevents oil leakage caused by loosening of the guide tube during long-term use of the device, which would reduce the transformer oil in the oil tank and lead to damage to the insulation structure between the core and windings.

[0008] Preferably, the venting mechanism includes a second elastic telescopic rod and a fine filter plate. The second elastic telescopic rod is fixedly connected to the inner wall of the buffer box, and the fine filter plate is fixedly connected to the telescopic end of the second elastic telescopic rod. The venting mechanism also includes a single vent pipe, a top plate, a rubber block, and a sealing block. The single vent pipe is fixedly connected to the top of the oil tank, the top plate is slidably connected to the circumferential surface of the single vent pipe, the rubber block is slidably connected to the circumferential surface of the single vent pipe, and the sealing block is fixedly connected to the circumferential surface of the rubber block. The fine filter plate contacts the buffer box and is used to filter out small amounts of metallic impurities in the transformer oil. The top plate is located on the movement trajectory of rack two, the rubber block is located on the movement trajectory of the top plate, and the top plate is used to push the rubber block to move. The sealing block is in contact with the single exhaust pipe, and the sealing block is used to seal the one-way air port of the single exhaust pipe. This can remove impurities in the transformer oil, prevent impurities from contacting the insulation structure between the iron core and the winding, prevent the insulation structure from being physically damaged or broken, extend the life of the insulation structure, ensure that the single exhaust pipe can discharge the gas inside the oil tank in time, ensure that the iron core and winding between the insulation structures are fully filled with transformer oil, and maintain the overall breakdown strength of the insulation structure.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This oil-immersed intelligent large-scale power transformer, through the coordinated movement of the oil tank, oil conservator, heat sink, fixed base, iron core, guide pipe, upper positioning sleeve, buffer box, guide plate, lower positioning sleeve, electric push rod, L-plate, elastic telescopic rod, sliding column, sealing arc plate, and pull rod, enables the transformer oil to contact the iron core and windings, providing insulation for the iron core and windings. It also prevents damage to the iron core and windings from the impact of the transformer oil, protects the stability of the internal insulation structure of the oil tank, ensures the insulation stability of the coils and windings, prevents leakage of transformer oil inside the oil tank during long-term use, blocks the intrusion of external contaminants, directly protects the integrity of the insulation materials, and improves the insulation stability of the iron core and windings.

[0010] 2. This oil-immersed intelligent large power transformer, through the coordinated movement of rack one, gear, rack two, L-rod, soft brush block, fixed plate one, pin, fixed plate two, connecting cross plate, and sliding column two, can ensure the heat dissipation efficiency of the device, control the operating temperature, prevent the insulation material from aging and failing due to high temperature, improve the insulation effect of the device on the core and windings, indirectly protect the insulation layer of the core and windings, protect the integrity of the insulation layer of the core and windings, and provide a long-term stable support effect for the guide tube, avoiding oil leakage caused by loosening of the guide tube during long-term use, which would reduce the transformer oil in the oil tank and thus damage the insulation structure between the core and windings.

[0011] 3. This oil-immersed intelligent large power transformer, through the coordinated movement of the elastic telescopic rod, fine filter plate, single exhaust pipe, top plate, rubber block, and sealing block, can remove impurities from the transformer oil, prevent impurities from contacting the insulation structure between the iron core and windings, avoid physical damage or open circuit of the insulation structure, extend the service life of the insulation structure, ensure that the single exhaust pipe can timely discharge the gas inside the oil tank, ensure that the iron core and windings between the insulation structures are fully filled with transformer oil, and maintain the overall breakdown strength of the insulation structure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a half-sectional view of the fuel tank structure of the present invention; Figure 3 This is a schematic diagram of the core structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B in the middle; Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C; Figure 8 For the present invention Figure 6 Enlarged view of the structure at point D; Figure 9 This is a schematic diagram of the exhaust mechanism of the present invention.

[0013] In the diagram: 1. Oil tank; 2. Oil reservoir; 3. Cleaning mechanism; 4. Exhaust mechanism; 5. Heat sink; 6. Fixing base; 7. Iron core; 8. Guide pipe; 9. Upper positioning sleeve; 10. Buffer box; 11. Guide plate; 12. Lower positioning sleeve; 13. Electric push rod; 14. L-plate; 15. Elastic telescopic rod one; 16. Sliding column one; 17. Sealing arc plate; 18. Pull rod; 301. Rack one; 302. Gear; 303. Rack two; 304. L-rod; 305. Soft brush block; 306. Fixing plate one; 307. Pin; 308. Fixing plate two; 309. Connecting horizontal plate; 310. Sliding column two; 401. Elastic telescopic rod two; 402. Fine filter plate; 403. Single exhaust pipe; 404. Top plate; 405. Rubber block; 406. Sealing block. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-9 One embodiment of the present invention is as follows: an oil-immersed intelligent large power transformer includes an oil tank 1, an oil conservator 2 fixedly connected to the inner wall of the oil tank 1, a heat sink 5 fixedly connected to the front of the oil tank 1, a fixing seat 6 fixedly connected to the inner wall of the oil tank 1, an iron core 7 fixedly connected to the inner wall of the fixing seat 6, a guide pipe 8 fixedly connected to the circumferential surface of the oil conservator 2, a positioning upper sleeve 9 rotatably connected to the circumferential surface of the oil tank 1 via a torsion spring, and a buffer box 10 fixedly connected to the inner wall of the oil tank 1. A guide plate 11 is fixedly connected to the oil tank 1. A positioning lower sleeve 12 is fixedly connected to the left side of the oil tank 1. An electric push rod 13 is fixedly connected to the front of the oil tank 1. An L plate 14 is fixedly connected to the telescopic end of the electric push rod 13. A pull rod 18 is rotatably connected to the circumferential surface of the L plate 14. An elastic telescopic rod 15 is fixedly connected to the inner wall of the oil tank 1. A sealing arc plate 17 is fixedly connected to the telescopic end of the elastic telescopic rod 15. A sliding column 16 is fixedly connected to the circumferential surface of the sealing arc plate 17. A coil is fixedly installed on the surface of the iron core 7. When the device is started, before installing the guide tube 8, the operator can manually rotate the upper positioning sleeve 9. After rotating the upper positioning sleeve 9 to a certain angle, the upper positioning sleeve 9 will contact the lower positioning sleeve 12. After contact, the upper positioning sleeve 9 and the lower positioning sleeve 12 will form a hollow cylinder. At this time, the operator can insert one end of the guide tube 8 into the inner wall of the oil tank 1 through the closed hollow circle formed by the lower positioning sleeve 12 and the upper positioning sleeve 9. After the guide tube 8 is installed and inserted, the transformer insulating oil inside the oil tank 2 can be guided by the guide tube 8 to... The transformer oil enters the oil tank 1 and contacts the coil inside the buffer box 10. During the process of transformer oil entering the oil tank 1 from the buffer box 10, the guide plate 11 can reduce the speed of transformer oil entering the oil tank 1 through its own slope. The quick installation of the guide pipe 8 can increase the discharge speed of transformer oil in the device, enable transformer oil to contact the iron core 7 and winding, insulate the iron core 7 and winding, prevent the iron core 7 and winding from being damaged by the impact of transformer oil, protect the stability of the internal insulation structure of the oil tank 1, and ensure the insulation stability of the coil and winding of the device. The front of the oil tank 1 is provided with a cleaning mechanism 3 for dust cleaning, and the top of the oil tank 1 is provided with an exhaust mechanism 4 for exhaust. The L plate 14 is in contact with the oil tank 1, and the sealing arc plate 17 is in contact with the oil tank 1. The sealing arc plate 17 is used to seal and fix the connection between the guide pipe 8 and the oil tank 1. The pull rod 18 is rotatably connected to the circumferential surface of the sliding column 16. The guide pipe 8 is in contact with the positioning lower sleeve 12. The positioning lower sleeve 12 is used to provide support and stability for the guide pipe 8. The guide pipe 8 is fixedly connected to the oil tank 1. When the device is started, the electric push rod 13 will activate, and the telescopic end of the electric push rod 13 will drive the L plate 14 to move downward. The movement of the L plate 14 will drive the pull rod 18 to move downward. The pull rod 18 will change its angle synchronously during the movement. During the movement, the pull rod 18 will push the sliding column 16 to slide on the inner wall of the oil tank 1. The movement of the sliding column 16 will drive the sealing arc plate 17 to move. After the sealing arc plate 17 moves a certain distance, the sealing arc plate 17 will contact the guide pipe 8 and seal the connection between the guide pipe 8 and the oil tank 1. This can prevent the transformer oil inside the oil tank 1 from leaking during long-term use of the device, block the intrusion of external contaminants, directly protect the integrity of the insulation material, and improve the insulation stability of the iron core 7 and the winding.

[0016] Overall working principle: The rapid installation of the guide pipe 8 increases the drainage speed of the transformer oil in the device, allowing the transformer oil to contact the iron core 7 and windings, thus insulating the iron core 7 and windings. It also prevents damage to the iron core 7 and windings from the impact of the transformer oil, protects the stability of the internal insulation structure of the oil tank 1, and ensures the insulation stability of the coil and windings. The sealing arc plate 17 contacts the guide pipe 8 and seals the connection between the guide pipe 8 and the oil tank 1, preventing leakage of transformer oil inside the oil tank 1 during prolonged use. It also blocks the intrusion of external contaminants, directly protects the integrity of the insulation material, and improves the insulation stability of the iron core 7 and windings.

[0017] Please see Figures 1-9 Based on the above embodiments, in another embodiment of the present invention, the cleaning mechanism 3 includes a rack 301, a gear 302, a rack 303, an L-bar 304, and a soft brush block 305. The rack 301 is fixedly connected to the right side of the L-plate 14, the gear 302 is rotatably connected to the front of the oil tank 1, the rack 303 is slidably connected to the front of the oil tank 1, the L-bar 304 is fixedly connected to the front of the rack 303, and the soft brush block 305 is fixedly connected to the inner wall of the L-bar 304. When the device is started, the movement of L plate 14 will drive rack 1 301 to move, the movement of rack 1 301 will drive gear 302 to rotate, the rotation of gear 302 will synchronously drive rack 2 303 to rise, the rise of rack 2 303 will drive L rod 304 to move and rise, the rise of L rod 304 will drive soft brush block 305 to move and rise. During the rise, soft brush block 305 can clean the dust on the surface of heat sink 5, which can ensure the heat dissipation efficiency of the device, control the operating temperature, prevent the insulation material from aging and failing due to high temperature, improve the insulation effect of the device on iron core 7 and winding, indirectly protect the insulation layer of iron core 7 and winding, and protect the integrity of the insulation layer of iron core 7 and winding. The cleaning mechanism 3 also includes a first fixing plate 306, a pin 307, a second fixing plate 308, a connecting horizontal plate 309, and a second sliding column 310. The first fixing plate 306 is fixedly connected to the inner wall of the upper positioning sleeve 9, the pin 307 is fixedly connected to the inner wall of the first fixing plate 306, the second fixing plate 308 is fixedly connected to the inner wall of the lower positioning sleeve 12, the connecting horizontal plate 309 is fixedly connected to the inner wall of the second fixing plate 308, and the second sliding column 310 is slidably connected to the inner wall of the connecting horizontal plate 309. The first rack 301 meshes with the gear 302, and the first rack 301 is used to drive the gear 302 to rotate. The gear 302 meshes with the second rack 303. The soft brush block 305 contacts the heat sink 5, and the soft brush block 305 is used to clean the dust on the surface of the heat sink 5. When the device is started, the rotation of the positioning sleeve 9 will synchronously drive the rotation of the fixing plate 306. The rotation of the fixing plate 306 will drive the pin 307 to rotate. After rotating a certain angle, the pin 307 will insert into the inner wall of the fixing plate 308. When the fixing plate 306 contacts the fixing plate 308, the pin 307 can completely penetrate the fixing plate 308. The operator can manually push the sliding column 310 to slide on the inner wall of the connecting horizontal plate 309. After sliding a certain distance, the sliding column 310 will... The sliding column 310 will contact the inner wall of the pin 307 and limit the pin 307 so that it cannot move. The limitation of the pin 307 can allow the fixing plate 306 to rotate. The limitation of the fixing plate 306 will limit the positioning upper sleeve 9. At this time, the positioning upper sleeve 9 will be in continuous contact with the positioning lower sleeve 12, which can provide a long-term stable support effect for the guide tube 8, and avoid the oil leakage caused by the loosening of the guide tube 8 under long-term use of the device, which would reduce the transformer oil in the oil tank 1 and thus damage the insulation structure between the iron core 7 and the winding. The exhaust mechanism 4 includes a second elastic telescopic rod 401 and a fine filter plate 402. The second elastic telescopic rod 401 is fixedly connected to the inner wall of the buffer box 10, and the fine filter plate 402 is fixedly connected to the telescopic end of the second elastic telescopic rod 401. When the device is in use, the transformer oil in the oil tank 2 will come into contact with the fine filter plate 402 as it passes through the guide pipe 8 to the inside of the buffer box 10. The thrust of the transformer oil will squeeze and push the fine filter plate 402 to move. During the process of being squeezed and pushed, the fine filter plate 402 will preferentially compress the elastic telescopic rod 401. The fine filter plate 402 can indirectly slow down the transformer oil. At the same time, the fine filter plate 402 can remove impurities in the transformer oil before it enters the oil tank 1, preventing impurities from coming into contact with the insulation structure between the iron core 7 and the winding, preventing the insulation structure from being physically damaged or broken, and extending the life of the insulation structure. The exhaust mechanism 4 also includes a single exhaust pipe 403, a top plate 404, a rubber block 405, and a sealing block 406. The single exhaust pipe 403 is fixedly connected to the top of the oil tank 1. The top plate 404 is slidably connected to the circumferential surface of the single exhaust pipe 403. The rubber block 405 is slidably connected to the circumferential surface of the single exhaust pipe 403. The sealing block 406 is fixedly connected to the circumferential surface of the rubber block 405. The fine filter plate 402 is in contact with the buffer box 10 and is used to filter out a small amount of metal impurities in the transformer oil. The top plate 404 is located on the movement trajectory of the rack 303. The rubber block 405 is located on the movement trajectory of the top plate 404 and is used to push the rubber block 405 to move. The sealing block 406 is in contact with the single exhaust pipe 403 and is used to seal the one-way air port of the single exhaust pipe 403. When the device is started, the rotation of gear 302 will drive rack 303 to rise. After rising a certain distance, rack 303 will contact top plate 404 and push top plate 404 to rise. The rise of top plate 404 will contact rubber block 405 and push sealing block 406 to rise. The rise of sealing block 406 will open the opening of single exhaust pipe 403. At this time, the gas inside oil tank 1 can be discharged through the opening of sealing block 406, which can prevent the gas from being damaged by thermal expansion inside oil tank 1 and the insulation structure. It can ensure that single exhaust pipe 403 can discharge the gas inside oil tank 1 in time, and ensure that the iron core 7 and winding between the insulation structure are fully filled with transformer oil, maintaining the overall breakdown strength of the insulation structure. Overall working principle: During its ascent, the soft brush block 305 cleans the dust from the surface of the heat sink 5, ensuring the device's heat dissipation efficiency, controlling operating temperature, preventing insulation material from aging and failing due to high temperatures, and improving the insulation effect on the iron core 7 and windings, indirectly protecting the insulation layer of the iron core 7 and windings, and protecting the integrity of the insulation layer. The limiting action of the fixing plate 306 will limit the positioning upper sleeve 9, which will then be in continuous contact with the positioning lower sleeve 12, providing long-term stable support for the guide tube 8 and preventing oil leakage caused by loosening of the guide tube 8 during prolonged use. The reduction of transformer oil in tank 1 leads to the destruction of the insulation structure between the iron core 7 and the winding. The fine filter plate 402 can indirectly slow down the transformer oil. At the same time, the fine filter plate 402 can remove impurities in the transformer oil before it enters tank 1, preventing impurities from contacting the insulation structure between the iron core 7 and the winding, avoiding physical damage or open circuit of the insulation structure, extending the life of the insulation structure, preventing damage to the insulation structure caused by the thermal expansion of gas inside tank 1, and ensuring that the single exhaust pipe 403 can timely discharge the gas inside tank 1, ensuring that the iron core 7 and the winding between the insulation structures are fully filled with transformer oil, and maintaining the overall breakdown strength of the insulation structure.

[0018] This invention provides an oil-immersed intelligent large-scale power transformer. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. An oil-immersed intelligent large-scale power transformer, comprising an oil tank (1), characterized in that: An oil tank (2) is fixedly connected to the inner wall of the oil tank (1). A heat sink (5) is fixedly connected to the front of the oil tank (1). A fixing seat (6) is fixedly connected to the inner wall of the oil tank (1). An iron core (7) is fixedly connected to the inner wall of the fixing seat (6). A guide pipe (8) is fixedly connected to the circumferential surface of the oil tank (2). A positioning upper sleeve (9) is rotatably connected to the circumferential surface of the oil tank (1) via a torsion spring. A buffer box (10) is fixedly connected to the inner wall of the oil tank (1). A guide plate (11) is fixedly connected to the inner wall of the buffer box (10). A positioning sleeve (12) is fixedly connected to the left side of the oil tank (1). An electric push rod (13) is fixedly connected to the front of the oil tank (1). An L plate (14) is fixedly connected to the telescopic end of the electric push rod (13). A pull rod (18) is rotatably connected to the circumferential surface of the L plate (14). An elastic telescopic rod (15) is fixedly connected to the inner wall of the oil tank (1). A sealing arc plate (17) is fixedly connected to the telescopic end of the elastic telescopic rod (15). A sliding column (16) is fixedly connected to the circumferential surface of the sealing arc plate (17). A coil is fixedly installed on the surface of the iron core (7).

2. The oil-immersed intelligent large-scale power transformer according to claim 1, characterized in that: The front of the oil tank (1) is provided with a cleaning mechanism (3) for dust cleaning, and the top of the oil tank (1) is provided with an exhaust mechanism (4) for exhaust. The L plate (14) is in contact with the oil tank (1), and the sealing arc plate (17) is in contact with the oil tank (1). The sealing arc plate (17) is used to seal and fix the connection between the guide pipe (8) and the oil tank (1).

3. The oil-immersed intelligent large-scale power transformer according to claim 2, characterized in that: The pull rod (18) is rotatably connected to the circumferential surface of the sliding column (16), the guide tube (8) is in contact with the positioning lower sleeve (12), and the positioning lower sleeve (12) is used to provide support and stability for the guide tube (8), and the guide tube (8) is fixedly connected to the oil tank (1).

4. The oil-immersed intelligent large-scale power transformer according to claim 3, characterized in that: The cleaning mechanism (3) includes a rack (301), a gear (302), a rack (303), an L-bar (304), and a soft brush block (305). The rack (301) is fixedly connected to the right side of the L-plate (14). The gear (302) is rotatably connected to the front of the oil tank (1). The rack (303) is slidably connected to the front of the oil tank (1). The L-bar (304) is fixedly connected to the front of the rack (303). The soft brush block (305) is fixedly connected to the inner wall of the L-bar (304).

5. The oil-immersed intelligent large-scale power transformer according to claim 4, characterized in that: The cleaning mechanism (3) further includes a first fixing plate (306), a pin (307), a second fixing plate (308), a connecting horizontal plate (309), and a second sliding column (310). The first fixing plate (306) is fixedly connected to the inner wall of the upper positioning sleeve (9), the pin (307) is fixedly connected to the inner wall of the first fixing plate (306), the second fixing plate (308) is fixedly connected to the inner wall of the lower positioning sleeve (12), the connecting horizontal plate (309) is fixedly connected to the inner wall of the second fixing plate (308), and the second sliding column (310) is slidably connected to the inner wall of the connecting horizontal plate (309).

6. The oil-immersed intelligent large-scale power transformer according to claim 5, characterized in that: The rack one (301) meshes with the gear (302), and the rack one (301) is used to drive the gear (302) to rotate. The gear (302) meshes with the rack two (303). The soft brush block (305) contacts the heat sink (5), and the soft brush block (305) is used to clean the dust on the surface of the heat sink (5).

7. The oil-immersed intelligent large-scale power transformer according to claim 6, characterized in that: The exhaust mechanism (4) includes a second elastic telescopic rod (401) and a fine filter plate (402). The second elastic telescopic rod (401) is fixedly connected to the inner wall of the buffer box (10), and the fine filter plate (402) is fixedly connected to the telescopic end of the second elastic telescopic rod (401).

8. The oil-immersed intelligent large-scale power transformer according to claim 7, characterized in that: The exhaust mechanism (4) further includes a single exhaust pipe (403), a top plate (404), a rubber block (405), and a sealing block (406). The single exhaust pipe (403) is fixedly connected to the top of the oil tank (1). The top plate (404) is slidably connected to the circumferential surface of the single exhaust pipe (403). The rubber block (405) is slidably connected to the circumferential surface of the single exhaust pipe (403). The sealing block (406) is fixedly connected to the circumferential surface of the rubber block (405).

9. The oil-immersed intelligent large-scale power transformer according to claim 8, characterized in that: The fine filter plate (402) is in contact with the buffer box (10), and the fine filter plate (402) is used to filter out a small amount of metal impurities in the transformer oil. The top plate (404) is located on the movement trajectory of the rack (303). The rubber block (405) is located on the movement trajectory of the top plate (404), and the top plate (404) is used to push the rubber block (405) to move. The sealing block (406) is in contact with the single exhaust pipe (403), and the sealing block (406) is used to seal the one-way air port of the single exhaust pipe (403).

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