An oil-immersed transformer

Abstract

This invention discloses an oil-immersed transformer, including a transformer body, with windings fixedly installed in the inner cavity of the transformer body, and several heat dissipation fins fixedly installed on the outer surface of the transformer body. An oil conservator is fixedly installed on the top of the transformer body. It also includes a heat dissipation mechanism for cooling the transformer. The heat dissipation mechanism includes a first oil pipe fixedly installed in the inner cavity of the transformer body, an oil pump fixedly installed on the top of the transformer body, and the oil pump being connected to the first oil pipe. A second oil pipe is fixedly connected to the top of the oil pump, and a third oil pipe is fixedly connected to the outer surface of the second oil pipe. Valves are fixedly connected to the outer surfaces of both the second and third oil pipes. An eddy current centrifuge centrifuges impurities in the transformer oil to the edge of the filter box, and finally discharges them through a slag outlet pipe. During use, a constraint cover, protrusions, and baffles can collectively slow down the flow velocity of the transformer oil, thereby improving the filtration effect of impurities in the transformer oil.

Description

Technical Field

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

[0002] A transformer is a device that transforms AC voltage based on the principle of electromagnetic induction. It has functions such as voltage conversion, current regulation, impedance matching, electrical isolation, and magnetic saturation voltage stabilization. Existing transformers can be divided into various types, such as intelligent large transformers, DC converter transformers, and intelligent reactor transformers. They are key equipment supporting power transmission and distribution systems and are widely used in industries, agriculture, transportation, and urban communities. During the use of existing transformers, the circulating flow of transformer oil used for heat dissipation can easily cause impurities to flow within the transformer.

[0003] A search revealed that patent document CN118969453A discloses an oil-immersed transformer, which includes an oil tank and base plates connected to the four corners of the bottom of the oil tank. The oil tank contains windings, and an oil conservator is connected to one side of the outside of the oil tank via an oil inlet pipe. The outer wall of the oil tank is provided with equidistantly arranged heat dissipation fins, and an oil drain pipe is connected to one side of the bottom of the oil tank. The transformer also includes: a cleaning component for removing dust from the surface of the heat dissipation fins; and a dredging component for preventing blockage of the oil inlet and drain pipes. The dredging component operates synchronously with the cleaning component.

[0004] The above design uses the internal pressure generated by the transformer itself to release the air bladder, and the expansion of the air bladder drives the cleaning racks on both sides of the heat dissipation fins and the scrapers inside the cleaning racks to move against the heat dissipation fins, cleaning the surface of the heat dissipation fins and allowing heat to be dissipated to the outside in time. At the same time, the cleaning components drive the unblocking rod to unclog the oil inlet and outlet pipes to avoid pipe blockage. However, in actual use, cooling the transformer oil by drawing it out to the oil tank and then draining it into the transformer cannot filter the transformer oil. Impurities in the transformer oil can easily clog the oil pipes and cause poor oil drainage.

[0005] Therefore, an oil-immersed transformer is proposed to address the above problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the problem that impurities in transformer oil can easily clog oil pipes, this invention proposes an oil-immersed transformer.

[0007] An oil-immersed transformer includes a transformer body, wherein windings are fixedly installed in the inner cavity of the transformer body, a plurality of heat dissipation fins are fixedly installed on the outer surface of the transformer body, and an oil conservator is fixedly installed on the top of the transformer body.

[0008] It also includes a heat dissipation mechanism for cooling the transformer;

[0009] The heat dissipation mechanism includes a first oil pipe, which is fixedly installed in the inner cavity of the transformer body. An oil pump is fixedly installed on the top of the transformer body and is connected to the first oil pipe. A second oil pipe is fixedly connected to the top of the oil pump. A third oil pipe is fixedly connected to the outer surface of the second oil pipe. Valves are fixedly connected to the outer surfaces of both the second and third oil pipes. The second oil pipe is fixedly connected to the outer surface of the oil conservator. A filter box is fixedly connected to one end of the third oil pipe. The filter box is fixedly installed on the top of the transformer body. A fourth oil pipe is fixedly connected to one side of the filter box. An eddy current generator, a constraint cover, and a baffle are fixedly installed inside the filter box. Several protrusions are fixedly installed at the bottom of the constraint cover. A slag discharge pipe is fixedly installed at the bottom of the filter box.

[0010] Preferably, a cleaning plate is slidably mounted on the outer surface of several of the heat dissipation fins, a first bracket is fixedly mounted on the top of the transformer body, a first bevel gear is rotatably mounted on the top of the first bracket, a first fan blade is fixedly connected to the top of the first bevel gear, and two second bevel gears mesh on the outer surface of the first bevel gear.

[0011] Preferably, a connecting rod is fixedly connected to one side of the second bevel gear, a support platform is rotatably mounted on the outer surface of the connecting rod, the support platform is fixedly mounted on the top of the transformer body, and an incomplete gear is fixedly connected to one end of the connecting rod, with a rack meshing on the outer surface of the incomplete gear.

[0012] Preferably, a limiting block is fixedly installed on the top of the transformer body, a limiting groove is formed on the top of the limiting block, the rack is slidably installed on the inner surface of the limiting groove, a connecting plate is fixedly installed on one side of the rack, a first spring is fixedly installed on the opposite surfaces of the connecting plate and the limiting block, a connecting block is fixedly installed on one side of the rack, and the connecting block is fixedly installed on one side of the cleaning plate.

[0013] Preferably, the connection between the third oil pipe and the filter box is located between the eddy current generator and the constraint cover. The constraint cover is located on top of the eddy current generator, and the baffle is located on top of the constraint cover. Two connecting brackets are fixedly installed on the top of the transformer body, and the two connecting brackets are jointly fixedly installed on the outer surface of the oil conservator.

[0014] Preferably, a filter plate is fixedly installed on the inner wall of the fourth oil pipe, and a rotating shaft is rotatably installed on one side of the filter plate. A propeller blade is fixedly connected to one end of the rotating shaft, and a scraper is fixedly connected to the other end of the rotating shaft. The scraper is rotatably installed on one side of the filter plate.

[0015] Preferably, a fifth oil pipe is fixedly connected to the outer surface of the oil conservator, and a water removal tank is fixedly connected to one end of the fifth oil pipe. The water removal tank is fixedly installed on the top of the transformer body, and a sixth oil pipe is fixedly connected to one side of the water removal tank. The sixth oil pipe penetrates into the inner cavity of the transformer body.

[0016] Preferably, a support plate is fixedly installed inside the water removal tank, and a plurality of superhydrophilic porous tubes are fixedly installed on the top of the support plate. A water pipe is fixedly installed on one side of the water removal tank, and the water pipe is located between the support plate and the bottom wall of the water removal tank.

[0017] Preferably, a baffle is slidably installed on the inner wall of the sixth oil pipe, a connecting column is fixedly installed at the bottom of the baffle, and a second bracket is fixedly installed on the inner wall of the transformer body, the second bracket being slidably connected to the connecting column.

[0018] Preferably, a stirring plate is slidably installed on the inner wall of the second bracket, the connecting column is fixedly installed on the top of the stirring plate, a second spring is fixedly installed on the inner surface of the stirring plate and the second bracket, a limit post is slidably installed on the top of the stirring plate, and the limit post is fixedly installed on the inner wall of the transformer body.

[0019] The advantages of this invention are:

[0020] 1. In use, the present invention dissipates heat from the transformer body through heat dissipation fins. Natural wind drives the first fan blade to rotate. The first fan blade drives the connecting rod to rotate through the first bevel gear and the second bevel gear. The connecting rod further drives the incomplete gear to rotate. The incomplete gear drives the rack to slide downward through meshing with the rack. When the rack slides, the cleaning plate slides along the surface of the heat dissipation fins through the connecting block to scrape off the dust on the surface of the heat dissipation fins, so as to avoid the accumulation of dust on the surface of the heat dissipation fins and affect heat dissipation. The rack is pulled to the initial position by the first spring, and the surface of the heat dissipation fins is cleaned in this cycle.

[0021] 2. This invention uses an oil pump to draw transformer oil from the transformer body cavity into an oil conservator, and then discharges it from the conservator cavity back into the transformer body cavity. During this process, the transformer oil can be cooled. Valves control the flow of the transformer oil through a filter box into the oil conservator. As the transformer oil passes through the filter box cavity, an eddy current generator centrifuges impurities in the oil to the edge of the filter box, where they are finally discharged through the slag outlet pipe. In use, a constraint cover, protrusions, and baffles work together to slow the flow rate of the transformer oil, thereby improving the filtration effect on impurities. The transformer oil then enters through the fourth oil pipe... During the process of the oil conservator's internal cavity, the flow of transformer oil causes the propeller blades to rotate. The propeller blades, through the shaft drive, enable the scraper to rotate. The rotation of the scraper on the filter plate surface removes impurities from the filter plate surface, preventing impurities from accumulating on the filter plate surface. During use, the transformer oil in the oil conservator's internal cavity enters the transformer body's internal cavity through the fifth oil pipe, the water removal tank, and the sixth oil pipe. When the transformer oil enters the water removal tank's internal cavity, it passes through multiple super-hydrophilic porous pipes. Water in the transformer oil enters the inner cavity of the super-hydrophilic porous pipes and then enters the space formed by the support plate and the bottom wall of the water removal tank, and is finally discharged through the water pipe.

[0022] 3. In this invention, the transformer oil squeezes the baffle, which slides downward under the action of the transformer oil. The baffle, through the connecting column, drives the stirring plate to squeeze the second spring. At this time, the stirring plate shakes under the limit of the limiting column. The shaking of the stirring plate causes the transformer oil in the inner cavity of the transformer body to shake, promoting the flow of transformer oil in the inner cavity of the transformer body, so that the transformer oil can dissipate heat evenly in the inner cavity of the transformer body. The second spring can push the baffle back to the inner cavity of the sixth oil pipe. The second spring can make the stirring plate circulate and stir the transformer oil in the inner cavity of the transformer body, promoting the flow of transformer oil to dissipate heat from the transformer body. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a heat sink fin mounting structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a rack and pinion connection structure according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the filter box connection structure according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic cross-sectional view of a filter box according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of a scraper mounting structure according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of a transformer body according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a baffle installation structure according to an embodiment of the present invention.

[0032] In the diagram: 1. Transformer body; 11. Winding; 2. Heat dissipation fins; 21. First support; 22. First bevel gear; 23. First fan blade; 24. Second bevel gear; 241. Connecting rod; 25. Support platform; 26. Incomplete gear; 27. Rack; 271. Limiting block; 272. Limiting groove; 273. Connecting plate; 274. First spring; 28. Connecting block; 29. ​​Cleaning plate; 3. First oil pipe; 31. Oil pump; 311. Second oil pipe; 312. Third oil pipe; 313. Valve; 32. Connecting frame; 321. Oil conservator; 3 3. Filter box; 331. Fourth oil pipe; 3311. Filter plate; 3312. Rotating shaft; 3313. Scraper; 3314. Propeller blade; 332. Constraint cover; 333. Protrusion; 334. Baffle plate; 335. Eddy; 336. Slag discharge pipe; 34. Water removal tank; 341. Fifth oil pipe; 342. Support plate; 343. Superhydrophilic porous pipe; 344. Water pipe; 345. Sixth oil pipe; 3451. Baffle; 3452. Connecting column; 3453. Second spring; 35. Second bracket; 36. Stirring plate; 37. Limiting column. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1 to 8As shown, an oil-immersed transformer includes a transformer body 1, with windings 11 fixedly installed inside the transformer body 1, and a plurality of heat dissipation fins 2 fixedly installed on the outer surface of the transformer body 1. An oil conservator 321 is fixedly installed on the top of the transformer body 1. It also includes a heat dissipation mechanism for cooling the transformer. The heat dissipation mechanism includes a first oil pipe 3 fixedly installed inside the transformer body 1, an oil pump 31 fixedly installed on the top of the transformer body 1, the oil pump 31 being connected to the first oil pipe 3, and a second oil pipe 311 fixedly connected to the top of the oil pump 31. The outer surface of the second oil pipe 311 is fixedly... A third oil pipe 312 is fixedly connected. Valves 313 are fixedly connected to the outer surfaces of both the second oil pipe 311 and the third oil pipe 312. The second oil pipe 311 is fixedly connected to the outer surface of the oil conservator 321. A filter box 33 is fixedly connected to one end of the third oil pipe 312. The filter box 33 is fixedly installed on the top of the transformer body 1. A fourth oil pipe 331 is fixedly connected to one side of the filter box 33. An eddy current generator 335, a constraint cover 332, and a baffle plate 334 are fixedly installed inside the filter box 33. Several protrusions 333 are fixedly installed at the bottom of the constraint cover 332. A slag discharge pipe 336 is fixedly installed at the bottom of the filter box 33.

[0035] When cooling a transformer, the heat generated by the transformer is released by circulating transformer oil. However, during the circulation of the transformer oil, impurities in the transformer oil also circulate. The accumulation of impurities in the transformer oil can easily lead to blockage of the oil pipes, making it difficult for the transformer to dissipate heat.

[0036] When the present invention is in use, firstly, when the transformer body 1 is in use, the heat dissipation area of ​​the transformer body 1 is increased by several heat dissipation fins 2 on the outer surface of the transformer body 1 to dissipate heat. At the same time, under the action of the oil pump 31, the transformer oil in the inner cavity of the transformer body 1 and the inner cavity of the oil conservator 321 is circulated to dissipate heat. When in use, the transformer oil can be controlled to flow into the inner cavity of the oil conservator 321 through the second oil pipe 311 or the third oil pipe 312 respectively by opening and closing the two valves 313.

[0037] When the transformer oil flows into the oil conservator 321 through the filter box 33 and the fourth oil pipe 331, the transformer oil is filtered inside the filter box 33. During use, the valve 313 on the outer surface of the second oil pipe 311 is closed, and the transformer oil enters the filter box 33 through the third oil pipe 312. After the transformer oil enters the filter box 33, the vortex generator 335 generates a rotating flow and uses centrifugal force to separate substances of different densities. In the separation of transformer oil and impurities, impurities are usually denser than transformer oil, so centrifugal force causes them to move to different positions. The vortex generator 335 generates an upward vortex driving force, enabling the oil to spiral upward stably. Furthermore, due to the increased vortex driving force, the transformer oil will... Due to the influence of centrifugal force, impurities in the transformer oil accumulate in the outer area. The protrusion 333 slows down the flow rate of the transformer oil, and the protrusion 333 enhances the effect of self-precipitation of impurities. Finally, the impurities are discharged through the slag outlet pipe 336. After the transformer oil and impurities are separated by the eddy current generator 335, the transformer oil continues to flow along the top of the constraint cover 332. The flow rate of the transformer oil is further slowed down by the baffle 334, which makes the separation of transformer oil and impurities more thorough. Finally, the transformer oil enters the oil conservator 321 through the fourth oil pipe 331, and then enters the transformer body 1 from the inner cavity of the oil conservator 321, thereby achieving the filtration of transformer oil and the heat dissipation of transformer body 1.

[0038] Further, such as Figure 2 and Figure 3 As shown, a cleaning plate 29 is slidably installed on the outer surface of several heat dissipation fins 2, a first bracket 21 is fixedly installed on the top of the transformer body 1, a first bevel gear 22 is rotatably installed on the top of the first bracket 21, a first fan blade 23 is fixedly connected to the top of the first bevel gear 22, and two second bevel gears 24 mesh on the outer surface of the first bevel gear 22.

[0039] A connecting rod 241 is fixedly connected to one side of the second bevel gear 24. A support platform 25 is rotatably mounted on the outer surface of the connecting rod 241. The support platform 25 is fixedly mounted on the top of the transformer body 1. An incomplete gear 26 is fixedly connected to one end of the connecting rod 241. A rack 27 meshes with the outer surface of the incomplete gear 26.

[0040] A limiting block 271 is fixedly installed on the top of the transformer body 1. A limiting groove 272 is formed on the top of the limiting block 271. The rack 27 is slidably installed on the inner surface of the limiting groove 272. A connecting plate 273 is fixedly installed on one side of the rack 27. A first spring 274 is fixedly installed on the opposite surfaces of the connecting plate 273 and the limiting block 271. A connecting block 28 is fixedly installed on one side of the rack 27. The connecting block 28 is fixedly installed on one side of the cleaning plate 29.

[0041] During use, dust may accumulate on the surface of the heat dissipation fins 2. Prolonged use with this dust accumulation can reduce the heat dissipation efficiency of the heat dissipation fins 2. Since the transformer is used outdoors where there is strong wind, the first blade 23 may rotate in the opposite direction due to the wind direction, causing the incomplete gear 26 to rotate and drive the rack 27 to slide upwards. At this time, the connecting block 28 will press against the limiting block 271, which then limits the movement of the connecting block 28. During use, the natural wind blowing on the first blade 23 can cause it to drive the first bevel gear 22 to rotate. The first bevel gear 22 simultaneously drives the two second bevel gears 24 to rotate, and the second bevel gears 24 further drive... The moving connecting rod 241 rotates, which drives the incomplete gear 26 to rotate. The incomplete gear 26 further drives the rack 27 to slide downward under the limit of the limiting block 271. At this time, the connecting plate 273 will compress the first spring 274. At the same time, the two connecting blocks 28 through the connecting block 28 will slide the cleaning plate 29. During the sliding process, the cleaning plate 29 can scrape off the dust on the surface of the heat sink fin 2. When the bottom of the cleaning plate 29 slides to the bottom of the heat sink fin 2, the rack 27 corresponds to the gearless part of the incomplete gear 26. At this time, the first spring 274 will push up the connecting plate 273 under its own characteristics and further slide the rack 27 upward through the connecting plate 273. The cleaning plate 29 will also slide upward with the rack 27.

[0042] Further, such as Figure 5 As shown, the connection between the third oil pipe 312 and the filter box 33 is located between the eddy current generator 335 and the constraint cover 332. The constraint cover 332 is located on top of the eddy current generator 335, and the baffle plate 334 is located on top of the constraint cover 332. Two connecting brackets 32 are fixedly installed on the top of the transformer body 1, and the two connecting brackets 32 are fixedly installed on the outer surface of the oil conservator 321.

[0043] When in use, the third oil pipe 312 directly delivers the transformer oil to the space between the eddy current generator 335 and the constraint cover 332. The transformer oil passes through the constraint cover 332 and the baffle 334 and finally flows into the inner cavity of the oil conservator 321 through the fourth oil pipe 331.

[0044] Further, such as Figure 6 As shown, a filter plate 3311 is fixedly installed on the inner wall of the fourth oil pipe 331. A rotating shaft 3312 is rotatably installed on one side of the filter plate 3311. A propeller blade 3314 is fixedly connected to one end of the rotating shaft 3312, and a scraper 3313 is fixedly connected to the other end of the rotating shaft 3312. The scraper 3313 is rotatably installed on one side of the filter plate 3311.

[0045] In use, as the transformer oil enters the inner cavity of the oil conservator 321 through the fourth oil pipe 331, the flowing transformer oil causes the propeller blade 3314 to rotate. The propeller blade 3314 further drives the rotating shaft 3312 to rotate. The rotating shaft 3312 carries the scraper 3313 to rotate on the surface of the filter plate 3311. The filter plate 3311 can further slow down the flow rate of the transformer oil. In use, the filter plate 3311 can also prevent impurities in the transformer oil from entering the inner cavity of the fourth oil pipe 331. The rotation of the scraper 3313 further prevents the surface of the filter plate 3311 from being blocked by impurities.

[0046] Further, such as Figure 7 and Figure 8 As shown, a fifth oil pipe 341 is fixedly connected to the outer surface of the oil conservator 321. A water removal tank 34 is fixedly connected to one end of the fifth oil pipe 341. The water removal tank 34 is fixedly installed on the top of the transformer body 1. A sixth oil pipe 345 is fixedly connected to one side of the water removal tank 34. The sixth oil pipe 345 penetrates into the inner cavity of the transformer body 1.

[0047] A support plate 342 is fixedly installed inside the water removal tank 34. Several super-hydrophilic porous tubes 343 are fixedly installed on the top of the support plate 342. A water pipe 344 is fixedly installed on one side of the water removal tank 34. The water pipe 344 is located between the support plate 342 and the bottom wall of the water removal tank 34.

[0048] A baffle 3451 is slidably installed on the inner wall of the sixth oil pipe 345, and a connecting column 3452 is fixedly installed at the bottom of the baffle 3451. A second bracket 35 is fixedly installed on the inner wall of the transformer body 1, and the second bracket 35 is slidably connected to the connecting column 3452.

[0049] A stirring plate 36 is slidably installed on the inner wall of the second bracket 35. The connecting column 3452 is fixedly installed on the top of the stirring plate 36. A second spring 3453 is fixedly installed on the inner surface of the stirring plate 36 and the second bracket 35. A limiting column 37 is slidably installed on the top of the stirring plate 36. The limiting column 37 is fixedly installed on the inner wall of the transformer body 1.

[0050] During use, water droplets will form inside the transformer body 1 due to temperature changes. Over time, these water droplets will affect the heat dissipation effect of the transformer oil on the transformer body 1, and may even cause damage to the transformer body 1 due to the presence of water. Therefore, it is necessary to remove the water from the transformer oil. During the circulation of the transformer oil, the oil enters the inner cavity of the transformer body 1 through the fifth oil pipe 341 and the sixth oil pipe 345. During this process, the oil passes through the water removal tank 34 and several superhydrophilic porous pipes 343, where water will enter the inner cavity of the superhydrophilic porous pipes 343. The oil flows down the superhydrophilic porous tube 343 into the space formed by the support plate 342 and the bottom wall of the water tank 34, and finally flows out through the water pipe 344. The transformer oil continues to flow through the sixth oil pipe 345 into the inner cavity of the transformer body 1. The superhydrophilic porous tube 343 is made of stainless steel, ceramic or porous polymer material. The inner wall is modified with silica nano-coating or graphene oxide to form underwater superoleophobic properties (contact angle > 150°). When the oil-water mixture flows through, the water preferentially penetrates into the micropores of the tube (pore size 1-50μm) due to capillary action, while the oil phase is blocked from the outside due to surface tension.

[0051] As the transformer oil enters the inner cavity of the transformer body 1 through the sixth oil pipe 345, it squeezes the baffle 3451 located inside the sixth oil pipe 345. Under the action of the transformer oil, the baffle 3451 slides along the inner wall of the sixth oil pipe 345. At the same time, the baffle 3451, along with the connecting post 3452 and the stirring plate 36, pushes the second spring 3453 downward. Under the limit of the limiting post 37, the stirring plate 36 shakes in the transformer oil inside the transformer body 1, causing the transformer oil to flow and thus promoting the uniform heat dissipation of the transformer body 1. Only when a certain amount of transformer oil accumulates inside the sixth oil pipe 345 can the baffle 3451 disengage. As the transformer oil in the sixth oil pipe 345 is released into the transformer body 1, the baffle 3451 re-enters the sixth oil pipe 345 under the action of the second spring 3453. This continuous circulation allows the stirring plate 36 to continuously agitate the transformer oil in the transformer body 1, thereby enabling the transformer oil to evenly dissipate heat from the transformer body 1. When filtering and removing water from the transformer oil, the flow of the transformer oil becomes unstable, so the transformer oil does not flow evenly into the sixth oil pipe 345. This prevents the impact force of the transformer oil on the baffle 3451 from reaching a balanced state with the second spring 3453.

[0052] Working principle: During operation, the transformer body 1 is first cooled by the heat dissipation fins 2. Natural wind drives the first fan blade 23 to rotate. The first fan blade 23 drives the connecting rod 241 to rotate via the first bevel gear 22 and the second bevel gear 24. The connecting rod 241 further drives the incomplete gear 26 to rotate. The incomplete gear 26 meshes with the rack 27, driving the rack 27 to slide downwards. As the rack 27 slides, the cleaning plate 29 slides along the surface of the heat dissipation fins 2 via the connecting block 28, scraping away dust from the surface of the heat dissipation fins 2 to prevent dust accumulation and its impact on heat dissipation. The rack 27 is pulled back to its initial position by the first spring 274. This cycle cleans the surface of the heat dissipation fins 2. The transformer oil inside the transformer body 1 is drawn out by the oil pump 31 into the oil conservator 321, and then discharged from the oil conservator 321 back into the transformer body 1. During the process, the transformer oil can be cooled. The valve 313 can control the transformer oil to enter the oil conservator 321 through the filter box 33. When the transformer oil passes through the inner cavity of the filter box 33, the eddy current generator 335 can centrifuge the impurities in the transformer oil to the edge of the filter box 33 and finally discharge them through the slag outlet pipe 336. During use, the constraint cover 332, the protrusion 333 and the baffle 334 can work together to slow down the flow speed of the transformer oil, thereby improving the filtration effect of impurities in the transformer oil. When the transformer oil enters the inner cavity of the oil conservator 321 through the fourth oil pipe 331, the flow of the transformer oil will cause the propeller blade 3314 to rotate. The propeller blade 3314 can drive the scraper 3313 to rotate through the rotating shaft 3312. The rotation of the scraper 3313 on the surface of the filter plate 3311 will clean the impurities on the surface of the filter plate 3311 and prevent the impurities from accumulating on the surface of the filter plate 3311.

[0053] During operation, the transformer oil inside the oil conservator 321 enters the transformer body 1 through the fifth oil pipe 341, the water removal tank 34, and the sixth oil pipe 345. When the transformer oil enters the water removal tank 34, it passes through multiple superhydrophilic porous pipes 343. Water in the transformer oil enters the inner cavity of these pipes and then into the space formed by the support plate 342 and the bottom wall of the water removal tank 34. Finally, it is discharged through the water pipe 344. When the transformer oil passes through the sixth oil pipe 345, it squeezes the baffle 3451. The baffle 3451 slides downwards under the action of the transformer oil and passes through the connecting column 3. 452 drives the stirring plate 36 to squeeze the second spring 3453. At this time, the stirring plate 36 shakes under the limit of the limiting post 37. The shaking of the stirring plate 36 will cause the transformer oil in the inner cavity of the transformer body 1 to shake, promote the flow of transformer oil in the inner cavity of the transformer body 1, and enable the transformer oil to dissipate heat evenly in the inner cavity of the transformer body 1. The second spring 3453 can push the baffle 3451 back to the inner cavity of the sixth oil pipe 345. The second spring 3453 can make the stirring plate 36 circulate and stir the transformer oil in the inner cavity of the transformer body 1, promote the flow of transformer oil to dissipate heat from the transformer body 1.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An oil-immersed transformer, comprising a transformer body (1), wherein a winding (11) is fixedly installed in the inner cavity of the transformer body (1), a plurality of heat dissipation fins (2) are fixedly installed on the outer surface of the transformer body (1), and an oil conservator (321) is fixedly installed on the top of the transformer body (1). It also includes a heat dissipation mechanism for cooling the transformer; Its features are: The heat dissipation mechanism includes a first oil pipe (3), which is fixedly installed inside the transformer body (1). An oil pump (31) is fixedly installed on the top of the transformer body (1). The oil pump (31) is connected to the first oil pipe (3). A second oil pipe (311) is fixedly connected to the top of the oil pump (31). A third oil pipe (312) is fixedly connected to the outer surface of the second oil pipe (311). Valves (313) are fixedly connected to the outer surfaces of both the second oil pipe (311) and the third oil pipe (312). The filter box (33) is fixedly connected to the outer surface of the oil tank (321). The filter box (33) is fixedly connected to one end of the third oil pipe (312). The filter box (33) is fixedly installed on the top of the transformer body (1). The fourth oil pipe (331) is fixedly connected to one side of the filter box (33). The eddy current generator (335), the constraint cover (332) and the baffle plate (334) are fixedly installed in the inner cavity of the filter box (33). Several protrusions (333) are fixedly installed at the bottom of the constraint cover (332). The slag discharge pipe (336) is fixedly installed at the bottom of the filter box (33). The connection between the third oil pipe (312) and the filter box (33) is located between the eddy current generator (335) and the constraint cover (332). The constraint cover (332) is located on top of the eddy current generator (335), and the baffle plate (334) is located on top of the constraint cover (332). Two connecting brackets (32) are fixedly installed on the top of the transformer body (1), and the two connecting brackets (32) are fixedly installed on the outer surface of the oil tank (321). A filter plate (3311) is fixedly installed on the inner wall of the fourth oil pipe (331). A rotating shaft (3312) is rotatably installed on one side of the filter plate (3311). A propeller blade (3314) is fixedly connected to one end of the rotating shaft (3312), and a scraper (3313) is fixedly connected to the other end of the rotating shaft (3312). The scraper (3313) is rotatably installed on one side of the filter plate (3311).

2. The oil-immersed transformer according to claim 1, characterized in that: A cleaning plate (29) is slidably installed on the outer surface of several heat dissipation fins (2). A first bracket (21) is fixedly installed on the top of the transformer body (1). A first bevel gear (22) is rotatably installed on the top of the first bracket (21). A first fan blade (23) is fixedly connected to the top of the first bevel gear (22). Two second bevel gears (24) mesh on the outer surface of the first bevel gear (22).

3. An oil-immersed transformer according to claim 2, characterized in that: A connecting rod (241) is fixedly connected to one side of the second bevel gear (24). A support platform (25) is rotatably mounted on the outer surface of the connecting rod (241). The support platform (25) is fixedly mounted on the top of the transformer body (1). An incomplete gear (26) is fixedly connected to one end of the connecting rod (241). A rack (27) meshes with the outer surface of the incomplete gear (26).

4. An oil-immersed transformer according to claim 3, characterized in that: A limiting block (271) is fixedly installed on the top of the transformer body (1). A limiting groove (272) is opened on the top of the limiting block (271). The rack (27) is slidably installed on the inner surface of the limiting groove (272). A connecting plate (273) is fixedly installed on one side of the rack (27). A first spring (274) is fixedly installed on the opposite side of the connecting plate (273) and the limiting block (271). A connecting block (28) is fixedly installed on one side of the rack (27). The connecting block (28) is fixedly installed on one side of the cleaning plate (29).

5. An oil-immersed transformer according to claim 4, characterized in that: The outer surface of the oil conservator (321) is fixedly connected to a fifth oil pipe (341), and one end of the fifth oil pipe (341) is fixedly connected to a water removal tank (34). The water removal tank (34) is fixedly installed on the top of the transformer body (1). A sixth oil pipe (345) is fixedly connected to one side of the water removal tank (34), and the sixth oil pipe (345) penetrates into the inner cavity of the transformer body (1).

6. An oil-immersed transformer according to claim 5, characterized in that: A support plate (342) is fixedly installed inside the water removal tank (34). Several super-hydrophilic porous pipes (343) are fixedly installed on the top of the support plate (342). A water pipe (344) is fixedly installed on one side of the water removal tank (34). The water pipe (344) is located between the support plate (342) and the bottom wall of the water removal tank (34).

7. An oil-immersed transformer according to claim 6, characterized in that: A baffle (3451) is slidably installed on the inner wall of the sixth oil pipe (345), and a connecting column (3452) is fixedly installed at the bottom of the baffle (3451). A second bracket (35) is fixedly installed on the inner wall of the transformer body (1), and the second bracket (35) is slidably connected to the connecting column (3452).

8. An oil-immersed transformer according to claim 7, characterized in that: A stirring plate (36) is slidably installed on the inner wall of the second bracket (35). The connecting column (3452) is fixedly installed on the top of the stirring plate (36). A second spring (3453) is fixedly installed on the inner surface of the stirring plate (36) and the second bracket (35). A limit post (37) is slidably installed on the top of the stirring plate (36). The limit post (37) is fixedly installed on the inner wall of the transformer body (1).

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