Oil-immersed transformer

Abstract

The oil-immersed transformer comprises a transformer body, a winding is fixedly installed in an inner cavity of the transformer body, a plurality of cooling fins are fixedly installed on the outer surface of the transformer body, and an oil conservator is fixedly installed at the top of the transformer body; the heat dissipation mechanism is used for dissipating heat of the transformer; the heat dissipation mechanism comprises a first oil pipe, the first oil pipe is fixedly installed in an inner cavity of the transformer body, an oil pump is fixedly installed at the top of the transformer body and is in through connection with 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 the second oil pipe and the third oil pipe; impurities in the transformer oil are centrifuged to the edge of the filter box through the swirler and finally discharged through the slag outlet pipe, the flowing speed of the transformer oil can be jointly slowed down through the restraining cover, the protruding block and the partition plate in the using process, and then the filtering effect of the impurities in the transformer oil is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-immersed transformers, in particular to an oil-immersed transformer. Background Art

[0002] A transformer is a device that converts 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, including intelligent large transformers, branch converter transformers, and intelligent reactor transformers. They are key equipment supporting power transmission and distribution systems and are widely used in industries such as industry, agriculture, transportation, and urban communities. During the use of existing transformers, the circulation of transformer oil used for heat dissipation inside the transformer can easily drive the flow of impurities inside the transformer.

[0003] After searching, the patent document with publication number CN118969453A discloses an oil-immersed transformer, which includes an oil tank and feet connected to the four corners of the bottom of the oil tank. A winding is arranged in the oil tank. The outer side of the oil tank is connected to an oil pillow through an oil inlet pipe, and the outer wall of the oil tank is provided with equidistant arrays of heat dissipating fins. The bottom side of the oil tank is connected to an oil drain pipe. It also includes: a cleaning component for removing dust from the surface of the heat dissipating fins; a dredging component to prevent blockage of the oil inlet pipe and the oil drain pipe, and the dredging component and the cleaning component operate synchronously.

[0004] The above design fills the air bag after the internal pressure generated by the transformer itself is released, and the expansion of the air bag drives the cleaning racks on the upper and lower sides of the heat sink fins and the scrapers provided in the cleaning racks to move in accordance with the heat sink fins, thereby cleaning the surface of the heat sink fins and allowing the heat to be dissipated to the outside in time; at the same time, the cleaning component is used to drive the clearing rod to clear the oil inlet pipe and the oil drain pipe to avoid pipe blockage. However, in actual use, the transformer oil is cooled by pumping it out to the oil pillow and then discharging it into the transformer. The transformer oil cannot be filtered, and impurities in the transformer oil can easily block the oil pipe and cause poor oil drainage.

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

[0006] In order to make up for the deficiencies of the prior art and solve the problem that impurities in the transformer oil easily clog the oil pipe, the present invention proposes an oil-immersed transformer.

[0007] An oil-immersed transformer comprises a transformer body, a winding is fixedly mounted in the inner cavity of the transformer body, a plurality of heat dissipation fins are fixedly mounted on the outer surface of the transformer body, and an oil pillow is fixedly mounted on the top of the transformer body; It also includes a heat dissipation mechanism for dissipating heat from the transformer; 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, the oil pump is connected to the first oil pipe, the top of the oil pump is fixedly connected to the second oil pipe, the outer surface of the second oil pipe is fixedly connected to the third oil pipe, the outer surfaces of the second and third oil pipes are both fixedly connected to valves, the second oil pipe is fixedly connected to the outer surface of the oil pillow, one end of the third oil pipe is fixedly connected to a filter box, the filter box is fixedly installed on the top of the transformer body, the fourth oil pipe is fixedly connected to one side of the filter box, the inner cavity of the filter box is fixedly installed with a vortex finder, a constraint cover and a baffle, the bottom of the constraint cover is fixedly installed with a number of bumps, and the bottom of the filter box is fixedly installed with a slag discharge pipe.

[0008] Preferably, a cleaning plate is slidably installed on the outer surfaces of several of the heat dissipation fins, a first bracket is fixedly installed on the top of the transformer body, a first bevel gear is rotatably installed 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 are meshed on the outer surface of the first bevel gear.

[0009] 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, one end of the connecting rod is fixedly connected to an incomplete gear, and a rack is meshed on the outer surface of the incomplete gear.

[0010] Preferably, a limit block is fixedly installed on the top of the transformer body, a limit slot is provided on the top of the limit block, the rack is slidably installed on the inner surface of the limit slot, 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 limit 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.

[0011] Preferably, the connection between the third oil pipe and the filter box is located between the vortex finder and the constraint cover, the constraint cover is located on the top of the vortex finder, the baffle is located on the top of the constraint cover, and two connecting frames are fixedly installed on the top of the transformer body, and the two connecting frames are jointly fixedly installed on the outer surface of the oil pillow.

[0012] Preferably, a filter plate is fixedly mounted on the inner wall of the fourth oil pipe, a rotating shaft is rotatably mounted on one side of the filter plate, one end of the rotating shaft is fixedly connected to a propeller blade, and the other end of the rotating shaft is fixedly connected to a scraper rod, which is rotatably mounted on one side of the filter plate.

[0013] Preferably, a fifth oil pipe is fixedly connected to the outer surface of the oil pillow, one end of the fifth oil pipe is fixedly connected to a dewatering tank, the dewatering tank is fixedly installed on the top of the transformer body, one side of the dewatering tank is fixedly connected to a sixth oil pipe, and the sixth oil pipe passes through the inner cavity of the transformer body.

[0014] Preferably, a support plate is fixedly installed in the inner cavity of the dewatering tank, a plurality of super-hydrophilic porous tubes are fixedly installed on the top of the support plate, a water pipe is fixedly installed on one side of the dewatering tank, and the water pipe is located between the support plate and the bottom wall of the dewatering tank.

[0015] Preferably, a baffle is slidably mounted on the inner wall of the sixth oil pipe, a connecting column is fixedly mounted on the bottom of the baffle, a second bracket is fixedly mounted on the inner wall of the transformer body, and the second bracket is slidably connected to the connecting column.

[0016] Preferably, a stirring plate is slidably mounted on the inner wall of the second bracket, the connecting column is fixedly mounted on the top of the stirring plate, a second spring is fixedly mounted on both the stirring plate and the inner surface of the second bracket, a limiting column is slidably mounted on the top of the stirring plate, and the limiting column is fixedly mounted on the inner wall of the transformer body.

[0017] The present invention is beneficial in that: The quenching of the quenching atmosphere by the gear train of the first fan and the gear train by the second fan are achieved by the use of the gear train of the first fan and the gear train of the second fan.

[0018] 2. The present invention uses an oil pump to extract the transformer oil from the inner cavity of the transformer body into the oil pillow, and then discharges it from the inner cavity of the oil pillow to the inner cavity of the transformer body. In this process, the transformer oil can be dissipated. The transformer oil can be controlled by a valve to pass through the filter box and enter the oil pillow. When the transformer oil passes through the inner cavity of the filter box, the impurities in the transformer oil can be centrifuged to the edge of the filter box through the vortex device, and finally discharged through the slag discharge pipe. When in use, the constraint cover, the protrusion and the baffle can jointly slow down the flow speed of the transformer oil, thereby improving the filtering effect of impurities in the transformer oil. When the transformer oil enters the fourth oil pipe During the process of entering the oil pillow cavity, the flow of transformer oil will cause the propeller blades to rotate. The propeller blades can rotate the scraper rod through the rotating shaft. The rotation of the scraper rod on the surface of the filter plate cleans the impurities on the surface of the filter plate to prevent the accumulation of impurities on the surface of the filter plate. When in use, the transformer oil in the oil pillow cavity enters the inner cavity of the transformer body through the fifth oil pipe, the dewatering tank and the sixth oil pipe. When the transformer oil enters the inner cavity of the dewatering tank, the transformer oil will pass through multiple super-hydrophilic porous tubes. The water in the transformer oil will enter the inner cavity of the super-hydrophilic porous tube and enter the space formed by the support plate and the bottom wall of the dewatering tank, and finally be discharged through the water pipe.

[0019] 3. The present invention uses transformer oil to squeeze the baffle, which slides downward under the action of the transformer oil and drives the stirring plate to squeeze the second spring through the connecting column. At this time, the stirring plate shakes under the limit of the limit column. The shaking of the stirring plate will cause the transformer oil in the inner cavity of the transformer body to shake, thereby promoting the flow of transformer oil in the inner cavity of the transformer body, so that the transformer oil can evenly dissipate heat to the inner cavity of the transformer body. The baffle can be pushed to the inner cavity of the sixth oil pipe again through the second spring, and the stirring plate can circulate and stir the transformer oil in the inner cavity of the transformer body through the second spring, thereby promoting the flow of transformer oil to dissipate heat to the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of a heat dissipation fin installation structure according to an embodiment of the present invention; Figure 3 A schematic diagram of a rack connection structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure of a filter box according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of a filter box according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the scraper rod installation structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of a transformer body according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the baffle installation structure of an embodiment of the present invention.

[0022] In the figure: 1. Transformer body; 11. Winding; 2. Heat dissipation fin; 21. First bracket; 22. First bevel gear; 23. First fan blade; 24. Second bevel gear; 241. Connecting rod; 25. Support platform; 26. Incomplete gear; 27. Rack; 271. Limit block; 272. Limit 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 pillow; 3 3. Filter box; 331. Fourth oil pipe; 3311. Filter plate; 3312. Rotating shaft; 3313. Scraper rod; 3314. Propeller blade; 332. Constraint cover; 333. Bump; 334. Baffle; 335. Vortex finder; 336. Slag discharge pipe; 34. Water removal tank; 341. Fifth oil pipe; 342. Support plate; 343. Super-hydrophilic porous tube; 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 DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figures 1 to 8As shown, an oil-immersed transformer includes a transformer body 1, 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 pillow 321 is fixedly installed on the top of the transformer body 1; a heat dissipation mechanism is also included for dissipating heat from the transformer; the heat dissipation mechanism includes a first oil pipe 3, the first oil pipe 3 is fixedly installed in the inner cavity of 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, the top of the oil pump 31 is fixedly connected to the second oil pipe 311, and the outer surface of the second oil pipe 311 is fixedly installed. A third oil pipe 312 is fixedly connected to the outer surfaces of the second oil pipe 311 and the third oil pipe 312, and a valve 313 is fixedly connected to the outer surface of the oil pillow 321. One end of the third oil pipe 312 is fixedly connected to the filter box 33, and 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. A vortex finder 335, a constraint cover 332 and a baffle 334 are fixedly installed in the inner cavity of the filter box 33. A number of protrusions 333 are fixedly installed on the bottom of the constraint cover 332. A slag discharge pipe 336 is fixedly installed on the bottom of the filter box 33.

[0025] When cooling the transformer, the heat generated by the transformer is released by circulating the transformer oil. However, during the transformer oil circulation process, impurities in the transformer oil will also circulate. The accumulation of impurities in the transformer oil can easily lead to blockage of the oil pipe, making it difficult for the transformer to dissipate heat.

[0026] When the present invention is in use, first, when the transformer body 1 is in use, the heat dissipation area of the transformer body 1 is increased by the plurality of heat dissipation fins 2 on the outer surface of the transformer body 1 to dissipate heat from the transformer body 1. 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 pillow 321 circulates to dissipate heat. When in use, the two valves 313 are opened and closed separately to control the transformer oil to flow into the inner cavity of the oil pillow 321 through the second oil pipe 311 or the third oil pipe 312 respectively. When the transformer oil flows into the oil pillow 321 through the filter box 33 and the fourth oil pipe 331, the transformer oil will be filtered in the inner cavity of the filter box 33. When in use, the valve 313 on the outer surface of the second oil pipe 311 is closed, and the transformer oil enters the inner cavity of the filter box 33 through the third oil pipe 312. After the transformer oil enters the inner cavity of the filter box 33, the vortex generator 335 generates a rotating flow and uses centrifugal force to separate substances of different densities. In the case of separating the transformer oil and impurities, the impurities are usually denser than the transformer oil, so the centrifugal force will move them to different positions. The vortex generator 335 generates an upward vortex driving force, so that the oil can spiral upward stably, and due to the increase in the vortex driving force, the transformer oil will Due to the influence of centrifugal force, impurities in the transformer oil gather in the peripheral area and the protrusion 333 can slow down the flow rate of the transformer oil. Under the action of the protrusion 333, the effect of autonomous precipitation of impurities is improved, and finally the impurities are discharged through the slag discharge pipe 336. After using the vortex generator 335 to separate the transformer oil and impurities, the transformer oil continues to flow along the top of the constraint cover 332. The restriction of the baffle 334 can further slow down the flow rate of the transformer oil, thereby making the transformer oil and impurities separated more thoroughly. Finally, the transformer oil enters the oil pillow 321 through the fourth oil pipe 331, and then enters the transformer body 1 from the inner cavity of the oil pillow 321, thereby realizing the filtration of the transformer oil and the heat dissipation of the transformer body 1.

[0027] Further, such as Figure 2 and Figure 3 As shown, a cleaning plate 29 is slidably mounted on the outer surface of several of the heat dissipation fins 2, a first bracket 21 is fixedly mounted on the top of the transformer body 1, a first bevel gear 22 is rotatably mounted 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 are meshed on the outer surface of the first bevel gear 22; One side of the second bevel gear 24 is fixedly connected to a connecting rod 241, and 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. One end of the connecting rod 241 is fixedly connected to an incomplete gear 26, and the outer surface of the incomplete gear 26 is meshed with a rack 27; A limit block 271 is fixedly installed on the top of the transformer body 1, and a limit slot 272 is provided on the top of the limit block 271. The rack 27 is slidably installed on the inner surface of the limit slot 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 limit block 271. A connecting block 28 is fixedly installed on one side of the rack 27, and the connecting block 28 is fixedly installed on one side of the cleaning plate 29.

[0028] When the present invention is in use, some dust will adhere to the surface of the heat dissipation fin 2 during daily use. The dust accumulated on the surface of the heat dissipation fin 2 will cause the heat dissipation effect of the heat dissipation fin 2 to decrease after long-term use. The transformer is used outdoors, and the natural wind outdoors is relatively strong. Due to different wind directions, during actual use, the first fan blade 23 may drive the incomplete gear 26 to rotate in the opposite direction and then drive the rack 27 to slide upward. At this time, the connecting block 28 will support the limit block 271. At this time, the limit block 271 plays a role of limiting the connecting block 28. When in use, natural wind blows the first fan blade 23, which can make the first fan blade 23 drive the first bevel gear 22 to rotate, and the first bevel gear 22 simultaneously drives the two second bevel gears 24 to rotate, and the second bevel gear 24 further drives The movable connecting rod 241 rotates, and the connecting rod 241 drives the incomplete gear 26 to rotate. The incomplete gear 26 further drives the rack 27 to slide downward under the limit of the limit block 271. At this time, the connecting plate 273 will compress the first spring 274, and at the same time, the two connecting blocks 28 will slide with the cleaning plate 29 through the connecting block 28. The cleaning plate 29 can scrape off the dust on the surface of the heat dissipating fin 2 during the sliding process. When the bottom of the cleaning plate 29 slides to the bottom of the heat dissipating fin 2, the rack 27 corresponds to the gearless part of the incomplete gear 26. At this time, the first spring 274 will lift the connecting plate 273 under the action of 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.

[0029] Further, such as Figure 5 As shown, the connection between the third oil pipe 312 and the filter box 33 is located between the vortex finder 335 and the constraint cover 332, the constraint cover 332 is located on the top of the vortex finder 335, the baffle 334 is located on the top of the constraint cover 332, and two connecting frames 32 are fixedly installed on the top of the transformer body 1. The two connecting frames 32 are jointly fixedly installed on the outer surface of the oil pillow 321.

[0030] When the present invention is in use, the third oil pipe 312 directly transports the transformer oil to between the vortex finder 335 and the restraint cover 332 , and the transformer oil passes through the restraint cover 332 and the baffle 334 and finally flows into the inner cavity of the oil pillow 321 through the fourth oil pipe 331 .

[0031] Further, such as Figure 6 As shown, a filter plate 3311 is fixedly installed on the inner wall of the fourth oil pipe 331, and a rotating shaft 3312 is rotatably installed on one side of the filter plate 3311. One end of the rotating shaft 3312 is fixedly connected to a propeller blade 3314, and the other end of the rotating shaft 3312 is fixedly connected to a scraper rod 3313, and the scraper rod 3313 is rotatably installed on one side of the filter plate 3311.

[0032] When the present invention is in use, during the process of the transformer oil passing through the fourth oil pipe 331 and entering the inner cavity of the oil pillow 321, the flowing transformer oil will cause the propeller blades 3314 to rotate, and the propeller blades 3314 will further drive 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 speed of the transformer oil. When 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 clogged by impurities.

[0033] Further, such as Figure 7 and Figure 8 As shown, the outer surface of the oil pillow 321 is fixedly connected to a fifth oil pipe 341, one end of the fifth oil pipe 341 is fixedly connected to a water removal tank 34, the water removal tank 34 is fixedly mounted on the top of the transformer body 1, and one side of the water removal tank 34 is fixedly connected to a sixth oil pipe 345, the sixth oil pipe 345 passes through the inner cavity of the transformer body 1; A support plate 342 is fixedly installed in the inner cavity of the dewatering box 34, and a plurality of 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 dewatering box 34, and the water pipe 344 is located between the support plate 342 and the bottom wall of the dewatering box 34; A baffle 3451 is slidably mounted on the inner wall of the sixth oil pipe 345 , a connecting column 3452 is fixedly mounted on the bottom of the baffle 3451 , and a second bracket 35 is fixedly mounted on the inner wall of the transformer body 1 , and the second bracket 35 is slidably connected to the connecting column 3452 ; A stirring plate 36 is slidably mounted on the inner wall of the second bracket 35, and the connecting column 3452 is fixedly mounted on the top of the stirring plate 36. The stirring plate 36 and the inner surface of the second bracket 35 are jointly fixedly mounted with a second spring 3453. A limiting column 37 is slidably mounted on the top of the stirring plate 36, and the limiting column 37 is fixedly mounted on the inner wall of the transformer body 1.

[0034] When the present invention is in use, water droplets will be generated in the inner cavity of the transformer body 1 due to temperature changes. During long-term use, the water droplets will affect the heat dissipation effect of the transformer oil on the transformer body 1, and even the presence of water will cause damage to the transformer body 1. Therefore, it is necessary to remove the water in the transformer oil. When the transformer oil circulates, the transformer 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 transformer oil will pass through the water removal tank 34. During this process, the transformer oil passes through a plurality of super-hydrophilic porous tubes 343, and the moisture in the transformer oil will enter the inner cavity of the super-hydrophilic porous tubes 343. The oil then flows down the super-hydrophilic porous tube 343 to the space formed by the support plate 342 and the bottom wall of the water removal tank 34, and finally flows out through the water pipe 344. The transformer oil then continues to flow through the sixth oil pipe 345 and enters the inner cavity of the transformer body 1. The super-hydrophilic porous tube 343 is made of stainless steel, ceramic, or porous polymer. The inner wall is modified with a silicon dioxide nano-coating or graphene oxide to form underwater super-oleophobic properties (contact angle > 150°). When the oil-water mixture flows through, water preferentially penetrates into the micropores of the tube (pore size 1-50μm) due to capillary action, and the oil phase is blocked out due to surface tension. In the process of the transformer oil passing through the sixth oil pipe 345 and entering the inner cavity of the transformer body 1, the transformer oil will squeeze the baffle 3451 in the inner cavity of the sixth oil pipe 345. The baffle 3451 slides along the inner wall of the sixth oil pipe 345 under the action of the transformer oil. At the same time, the baffle 3451 brings the connecting column 3452 and the stirring plate 36 to press the second spring 3453 downward. Under the limit of the limiting column 37, the stirring plate 36 will swing in the transformer oil in the inner cavity of the transformer body 1, causing the transformer oil to flow and thus promoting the transformer oil to evenly dissipate heat to the transformer body 1. Because a certain amount of transformer oil accumulates in the inner cavity of the sixth oil pipe 345, the baffle 3451 can be removed. The transformer oil in the inner cavity of the sixth oil pipe 345 is released into the inner cavity of the transformer body 1, and then, under the action of the second spring 3453, the baffle 3451 enters the inner cavity of the sixth oil pipe 345 again. The continuous circulation can enable the stirring plate 36 to continuously stir the transformer oil in the inner cavity of the transformer body 1, so that the transformer oil can evenly dissipate heat to the inner cavity of the transformer body 1. When filtering and removing water from the transformer oil, it will cause the transformer oil flow to be unstable. Therefore, the transformer oil does not flow evenly into the inner cavity of the sixth oil pipe 345, thereby avoiding the impact force of the transformer oil on the baffle 3451 and the second spring 3453 from reaching a balanced state.

[0035] Working principle: When in use, the transformer body 1 is first cooled by the heat dissipation fins 2, and the first fan blade 23 is driven to rotate by natural wind. The first fan blade 23 drives the connecting rod 241 to rotate through the first bevel gear 22 and the second bevel gear 24, and the connecting rod 241 further drives the incomplete gear 26 to rotate. The incomplete gear 26 drives the rack 27 to slide downward by meshing with the rack 27. When the rack 27 slides, it drives the cleaning plate 29 to slide along the surface of the heat dissipation fin 2 through the connecting block 28 to scrape off the dust on the surface of the heat dissipation fin 2, so as to avoid dust accumulation on the surface of the heat dissipation fin 2 and affect heat dissipation. The rack 27 is pulled to the initial position by the first spring 274, so as to clean the surface of the heat dissipation fin 2 in a cycle, and the transformer oil in the inner cavity of the transformer body 1 is pumped out to the oil pillow 321 by the oil pump 31, and then discharged from the inner cavity of the oil pillow 321 to the inner cavity of the transformer body 1. During the process, the transformer oil can be cooled. The valve 313 can be used to control the transformer oil to pass through the filter box 33 and enter the oil pillow 321. When the transformer oil passes through the inner cavity of the filter box 33, the impurities in the transformer oil can be centrifuged to the edge of the filter box 33 through the vortex generator 335, and finally discharged through the slag discharge pipe 336. When in use, the constraint cover 332, the protrusion 333 and the baffle plate 334 can jointly slow down the flow speed of the transformer oil, thereby improving the filtering effect of impurities in the transformer oil. In the process of the transformer oil passing through the fourth oil pipe 331 and entering the inner cavity of the oil pillow 321, the flow of the transformer oil will cause the propeller blade 3314 to rotate. The propeller blade 3314 is driven by the rotating shaft 3312 to rotate the scraper rod 3313. The rotation of the scraper rod 3313 on the surface of the filter plate 3311 cleans up the impurities on the surface of the filter plate 3311, thereby preventing impurities from accumulating on the surface of the filter plate 3311.

[0036] When in use, the transformer oil in the inner cavity of the oil pillow 321 passes through the fifth oil pipe 341, the water removal tank 34 and the sixth oil pipe 345 into the inner cavity of the transformer body 1. When the transformer oil enters the inner cavity of the water removal tank 34, the transformer oil passes through multiple super-hydrophilic porous tubes 343. Water in the transformer oil enters the inner cavity of the super-hydrophilic porous tubes 343 and enters the space formed by the support plate 342 and the bottom wall of the water removal tank 34, and is finally 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 downward 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 swings under the limit of the limit column 37. The swing of the stirring plate 36 will cause the transformer oil in the inner cavity of the transformer body 1 to swing, thereby promoting the transformer oil to flow in the inner cavity of the transformer body 1, so that the transformer oil can evenly dissipate heat to the inner cavity of the transformer body 1. The baffle 3451 can be pushed to the inner cavity of the sixth oil pipe 345 again through the second spring 3453. The stirring plate 36 can circulate and stir the transformer oil in the inner cavity of the transformer body 1 through the second spring 3453, thereby promoting the flow of transformer oil to dissipate heat to the transformer body 1.

[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0038] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. An oil-immersed transformer, comprising a transformer body (1), a winding (11) fixedly mounted in the inner cavity of the transformer body (1), a plurality of heat dissipation fins (2) fixedly mounted on the outer surface of the transformer body (1), and an oil pillow (321) fixedly mounted on the top of the transformer body (1); It also includes a heat dissipation mechanism for dissipating heat from the transformer; Its characteristics are: The heat dissipation mechanism comprises a first oil pipe (3), the first oil pipe (3) being fixedly mounted in the inner cavity of the transformer body (1), an oil pump (31) being fixedly mounted on the top of the transformer body (1), the oil pump (31) being in continuous communication with the first oil pipe (3), a second oil pipe (311) being fixedly connected to the top of the oil pump (31), a third oil pipe (312) being fixedly connected to the outer surface of the second oil pipe (311), valves (313) being fixedly connected to the outer surfaces of both the second oil pipe (311) and the third oil pipe (312), and the second oil pipe (311). ) is fixedly connected to the outer surface of the oil pillow (321), one end of the third oil pipe (312) is fixedly connected to the filter box (33), the filter box (33) is fixedly installed on the top of the transformer body (1), one side of the filter box (33) is fixedly connected to the fourth oil pipe (331), the inner cavity of the filter box (33) is fixedly installed with a vortex finder (335), a restraining cover (332) and a baffle (334), the bottom of the restraining cover (332) is fixedly installed with a plurality of protrusions (333), and the bottom of the filter box (33) is fixedly installed with a slag discharge pipe (336).

2. The oil-immersed transformer according to claim 1, characterized in that: A cleaning plate (29) is slidably mounted on the outer surfaces of the plurality of heat dissipation fins (2), a first bracket (21) is fixedly mounted on the top of the transformer body (1), a first bevel gear (22) is rotatably mounted 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) are meshed on the outer surface of the first bevel gear (22).

3. The oil-immersed transformer according to claim 2, characterized in that: One side of the second bevel gear (24) is fixedly connected to a connecting rod (241); 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); one end of the connecting rod (241) is fixedly connected to an incomplete gear (26); and a rack (27) is meshed on the outer surface of the incomplete gear (26).

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

5. The oil-immersed transformer according to claim 4, characterized in that: The connection between the third oil pipe (312) and the filter box (33) is located between the vortex finder (335) and the constraint cover (332), the constraint cover (332) is located on the top of the vortex finder (335), the baffle (334) is located on the top of the constraint cover (332), and two connecting frames (32) are fixedly installed on the top of the transformer body (1), and the two connecting frames (32) are fixedly installed on the outer surface of the oil pillow (321).

6. The oil-immersed transformer according to claim 5, characterized in that: A filter plate (3311) is fixedly mounted on the inner wall of the fourth oil pipe (331), a rotating shaft (3312) is rotatably mounted on one side of the filter plate (3311), one end of the rotating shaft (3312) is fixedly connected to a propeller blade (3314), and the other end of the rotating shaft (3312) is fixedly connected to a scraper rod (3313), and the scraper rod (3313) is rotatably mounted on one side of the filter plate (3311).

7. The oil-immersed transformer according to claim 6, characterized in that: The outer surface of the oil pillow (321) is fixedly connected to a fifth oil pipe (341), one end of the fifth oil pipe (341) is fixedly connected to a water removal tank (34), the water removal tank (34) is fixedly mounted on the top of the transformer body (1), and one side of the water removal tank (34) is fixedly connected to a sixth oil pipe (345), the sixth oil pipe (345) passes through the inner cavity of the transformer body (1).

8. The oil-immersed transformer according to claim 7, characterized in that: A support plate (342) is fixedly installed in the inner cavity of the dewatering box (34), a plurality of super-hydrophilic porous tubes (343) are fixedly installed on the top of the support plate (342), and a water pipe (344) is fixedly installed on one side of the dewatering box (34), and the water pipe (344) is located between the support plate (342) and the bottom wall of the dewatering box (34).

9. The oil-immersed transformer according to claim 8, characterized in that: A baffle (3451) is slidably mounted on the inner wall of the sixth oil pipe (345), a connecting column (3452) is fixedly mounted on the bottom of the baffle (3451), a second bracket (35) is fixedly mounted on the inner wall of the transformer body (1), and the second bracket (35) is slidably connected to the connecting column (3452).

10. The oil-immersed transformer according to claim 9, characterized in that: A stirring plate (36) is slidably mounted on the inner wall of the second bracket (35); the connecting column (3452) is fixedly mounted on the top of the stirring plate (36); a second spring (3453) is fixedly mounted on both the stirring plate (36) and the inner surface of the second bracket (35); a limiting column (37) is slidably mounted on the top of the stirring plate (36); and the limiting column (37) is fixedly mounted on the inner wall of the transformer body (1).

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