Oil-immersed transformer with impurity self-filtering and cooling structure

Abstract

The invention discloses an oil-immersed transformer with an impurity self-filtering and cooling structure, which is characterized in that the bottom of a transformer main body is connected with a first delivery pump through a first connecting pipe, the liquid outlet end of the first delivery pump is connected with a first cooling pipe through a second connecting pipe, and the first cooling pipe is communicated with an impurity removal box through a third connecting pipe; a first rotating rod is rotationally arranged in the impurity removing box, a first bevel gear and stirring blades are installed on the outer side of the first rotating rod, the first bevel gear is meshed with a second bevel gear, the second bevel gear is installed on the outer side of a driving rod, and one end of the driving rod penetrates into a fan barrel to be connected with a third bevel gear arranged in the fan barrel; a turbine is arranged on the outer side of the driving rod and engaged with the worm. According to the oil-immersed transformer with the impurity self-filtering and cooling structure, in order to solve the problems that an existing oil-immersed transformer is single in function and cannot filter impurities in oil, a heat dissipation plate is fixedly installed on the outer side of the transformer body.

Description

Technical Field

[0001] The invention relates to the technical field of oil-immersed transformers, in particular to an oil-immersed transformer with a self-filtering impurity and cooling structure. Background Art

[0002] The oil-immersed transformer uses mineral oil as the transformer insulation medium and cooling medium. The main components of the transformer are immersed in a box filled with mineral oil, and the wiring terminals are led out from the top of the box cover.

[0003] After searching, it is found that in the prior art, such as the oil-immersed transformer with announcement number CN206210536U, it includes a transformer shell and an inner core arranged in the shell, the outer wall of the shell is connected to a heat dissipation fin extending outward, and a plurality of the heat dissipation fins are arranged, and the lower end of the shell is connected to a mounting frame. The shell is also provided with a heat dissipation device, and the heat dissipation device includes a heat dissipation pipe arranged above or below the heat dissipation fin. Due to the adoption of the above technical scheme, the oil-immersed transformer described in the utility model is provided with a heat dissipation pipe to blow cold air into the gap between the two fins, thereby improving the heat dissipation effect of the heat dissipation fins. At the same time, the high-temperature transformer oil in the transformer is cooled, thereby improving the heat dissipation effect of the transformer, ensuring the normal operation of the transformer components, and avoiding burning of the components when the transformer oil temperature is too high.

[0004] In summary, the existing oil-immersed transformer improves the heat dissipation effect of the transformer, but as the use time of the oil-immersed transformer increases, there will be some impurities in the oil. As the continuous accumulation, the overall operation will be not smooth and the heat exchange efficiency will decrease. The existing oil-immersed transformer has a relatively single function and cannot filter the impurities in the oil. Therefore, an oil-immersed transformer with self-filtering impurities and cooling structure is proposed. Summary of the invention

[0005] The object of the present invention is to provide an oil-immersed transformer with a self-filtering impurity and cooling structure, so as to solve the problem that the existing oil-immersed transformer mentioned in the above background technology has a relatively single function and cannot filter impurities in the oil.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil-immersed transformer with a self-filtering impurity and cooling structure, comprising a transformer body, a heat sink fixedly installed on the outside of the transformer body, and the bottom of the transformer body is connected to a first delivery pump through a first connecting pipe, the liquid outlet of the first delivery pump is connected to a first cooling pipe through a second connecting pipe, and the first cooling pipe is connected to a de-pumping box through a third connecting pipe, a first rotating rod is rotatably arranged inside the de-pumping box, and a first bevel gear and a stirring blade are installed on the outside of the first rotating rod, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is installed on the outside of a driving rod, and one end of the driving rod passes through the inside of a fan barrel and is connected to the third bevel gear arranged inside the fan barrel. The third and fourth helical gears are connected, a turbine is arranged on the outside of the driving rod, and the turbine is meshed with the worm, one end of the worm is connected to the first driving motor arranged on the outside of the mounting cover, the third helical gear is meshed with the fourth helical gear, and the fourth helical gear is installed on the outside of the second rotating rod, the second rotating rod is rotatably connected to the inside of the fan barrel, and the fan blades are symmetrically arranged on the outside of the second rotating rod, the air outlet of the fan barrel is connected to the cooling box through the air supply pipe, and the air outlet end of the cooling box is connected to the wind uniforming plate through the delivery pipe, a filter mechanism is installed inside the impurity removal box, and the liquid outlet of the impurity removal box is connected to the second delivery pump arranged on the top of the transformer main body through the second cooling pipe, and the second delivery pump is connected to the inside of the transformer main body through the fourth connecting pipe.

[0007] Preferably, limit blocks are symmetrically arranged on the top of the transformer body, and block grooves for use with the limit blocks are installed on both sides of the hollow protective cover.

[0008] Through the above technical solution, it is convenient to limit the position of the hollow protective cover.

[0009] Preferably, the limit block includes a mounting vertical plate, and an open mounting cylinder is provided on one side of the mounting vertical plate, a movable plate is slidably provided inside the open mounting cylinder, and a block used in conjunction with a block groove is provided on one side of the movable plate, the other side of the movable plate is connected to a handle provided on the outer side of the mounting vertical plate through a pull rod, and the side of the movable plate close to the pull rod is connected to the inner wall of one side of the open mounting cylinder through a symmetrically arranged spring.

[0010] Through the above technical solution, it is convenient to limit the position of the hollow protective cover.

[0011] Preferably, a refrigerator is provided inside the cooling box, and a refrigeration pipe is connected to the top of the refrigerator.

[0012] Through the above technical solution, it is convenient to cool the inside of the cooling box.

[0013] Preferably, the air uniformity plate is connected to the transformer body via an L-shaped mounting plate, and a plurality of groups of air outlet nozzles are mounted on one side of the air uniformity plate.

[0014] Through the above technical solution: it is easy to eject gas.

[0015] Preferably, the filter mechanism includes a mounting frame, and a slot matching the mounting frame is opened on the impurity removal box, a filter is arranged on the inner side of the mounting frame, and a mounting plate is arranged on the top of the mounting frame, the mounting plate is connected to the impurity removal box by a plurality of groups of bolts, and a handle is arranged on the top of the mounting plate.

[0016] Through the above technical solution, it is easy to filter impurities.

[0017] Preferably, a filter cleaning mechanism for use with the filter is installed inside the impurity removal box.

[0018] Through the above technical solution: it is convenient to clean the filter.

[0019] Preferably, the filter cleaning mechanism includes a second drive motor, and the second drive motor can drive the first gear to rotate, the first gear is meshed with the second gear, and the second gear is installed on the outside of the screw mechanism, one end of the screw mechanism passes through the interior of the dust removal box and is connected to the moving block, and a long rod cleaning brush is installed on one side of the moving block, and the brush head of the long rod cleaning brush is in contact with the outside of the filter.

[0020] Through the above technical solution: it is convenient to clean the filter.

[0021] Preferably, a debris outlet is provided at the bottom of the debris removal box on one side of the installation frame, and the debris outlet is communicated with the interior of the debris storage barrel.

[0022] Through the above technical solution: it is convenient to collect impurities.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the oil-immersed transformer with self-filtering impurities and cooling structure,

[0024] (1) The present invention aims to solve the problem that the existing oil-immersed transformer has a relatively single function and cannot filter impurities in the oil. A heat sink is fixedly installed on the outer side of the transformer body, and the bottom of the transformer body is connected to the first delivery pump through a first connecting pipe, the liquid outlet of the first delivery pump is connected to the first cooling pipe through a second connecting pipe, and the first cooling pipe is connected to the impurity removal box through a third connecting pipe. A first rotating rod is rotatably arranged inside the impurity removal box, and a first bevel gear and a stirring blade are installed on the outer side of the first rotating rod. The first bevel gear meshes with the second bevel gear, and the second bevel gear is installed on the outer side of the driving rod. One end of the driving rod passes through the inside of the fan barrel and is connected to the third bevel gear arranged inside the fan barrel. A turbine is arranged on the outer side of the driving rod, and the turbine meshes with the worm. One end of the worm is connected to the first driving motor arranged on the outer side of the mounting cover. The third bevel gear meshes with the fourth bevel gear, and the fourth bevel gear is installed on the outer side of the second rotating rod. The second rotating rod is rotatably connected to the inside of the fan barrel. , and the second rotating rod is symmetrically provided with fan blades on the outside, the air outlet of the fan barrel is connected to the cooling box through the air supply pipe, and the air outlet end of the cooling box is connected to the uniform wind plate through the delivery pipe, a filter mechanism is installed inside the impurity removal box, and the liquid outlet of the impurity removal box is connected to the second delivery pump arranged on the top of the transformer main body through the second cooling pipe, and the second delivery pump is connected to the inside of the transformer main body through the fourth connecting pipe. When in use, the first delivery pump, the second delivery pump, the cooling box and the first driving motor are turned on, and the cooling oil enters the impurity removal box for impurity removal under the action of the first delivery pump, and the impurity-removed cooling oil is transported to the inside of the transformer main body again under the action of the second delivery pump, and the stirring blade rotates under the action of the first driving motor to disperse the oil containing impurities, thereby preventing impurities from gathering in one place for filtering, and at the same time, the fan blade rotates under the action of the first driving motor, and the wind force generated by the rotation is transported to the inside of the cooling box for cooling, and finally sprayed out from the air outlet nozzle to accelerate the heat dissipation of the transformer main body.

[0025] (2) In order to solve the problem of inconvenient filter cleaning, the present device is provided with a filter cleaning mechanism used in conjunction with the filter inside the dust removal box. The filter cleaning mechanism includes a second drive motor, and the second drive motor can drive the first gear to rotate. The first gear is meshed with the second gear, and the second gear is installed on the outside of the screw mechanism. One end of the screw mechanism passes through the dust removal box and is connected to the moving block, and a long-rod cleaning brush is installed on one side of the moving block. The brush head of the long-rod cleaning brush contacts the outside of the filter. When the filter needs to be cleaned, the second drive motor is turned on, and the long-rod cleaning brush moves under the action of the second drive motor, thereby cleaning the surface of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0027] Figure 2It is a schematic diagram of the front cross-sectional structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0029] Figure 4 This is a schematic diagram of the internal structure of the impurity removal box of the present invention;

[0030] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0031] Figure 6 This is a schematic diagram of the connection relationship between the fan tube and the cooling box of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

[0033] In the figure: 1. transformer body; 101. heat sink; 102. first connecting pipe; 2. first delivery pump; 201. second connecting pipe; 202. first cooling pipe; 203. third connecting pipe; 204. impurity removal box; 2041. first rotating rod; 2042. first bevel gear; 2043. stirring blade; 2044. driving rod; 2045. turbine; 2046. worm; 2047. first driving motor; 3. fan tube; 301. third bevel gear; 302. fourth bevel gear; 303. second rotating rod; 304. fan blade; 305. air supply pipe; 306. cooling box; 3061. refrigerator; 3062. cooling pipe; 307. delivery pipe; 308. Wind uniformity plate; 3081, L-shaped mounting plate; 3082, air outlet nozzle; 4, filter mechanism; 401, mounting frame; 402, filter; 403, mounting plate; 5, second cooling pipe; 501, second delivery pump; 502, fourth connecting pipe; 6, limit block; 601, mounting vertical plate; 602, open mounting cylinder; 603, moving plate; 604, block; 605, pull rod; 606, handle; 607, spring; 7, hollow protective cover; 701, block slot; 8, filter cleaning mechanism; 801, second drive motor; 802, first gear; 803, second gear; 804, screw mechanism; 805, moving block; 806, long rod cleaning brush; 9, storage cylinder. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-7 The present invention provides a technical solution: an oil-immersed transformer with self-filtering impurities and cooling structure, according to Figure 1-3 As shown, the limit block 6 is symmetrically arranged on the top of the transformer body 1, and block grooves 701 for use with the limit block 6 are installed on both sides of the hollow protective cover 7.

[0036] Specifically, the limit block 6 includes a mounting vertical plate 601, and an open mounting cylinder 602 is provided on one side of the mounting vertical plate 601, a movable plate 603 is slidably provided inside the open mounting cylinder 602, and a clamping block 604 used in conjunction with the clamping block groove 701 is provided on one side of the movable plate 603, and the other side of the movable plate 603 is connected to a handle 606 provided on the outer side of the mounting vertical plate 601 through a pull rod 605, and the side of the movable plate 603 close to the pull rod 605 is connected to the open mounting cylinder through a symmetrically arranged spring 607. 602 is connected to the inner wall on one side, and the hollow protective cover 7 can be limited by setting a limiting block 6. The setting of the hollow protective cover 7 can play a certain protective role for the top equipment of the transformer main body 1. When the hollow protective cover 7 needs to be limited, the handle 606 is released, and the moving plate 603 moves inside the open mounting tube 602 under the action of the spring 607, thereby driving the block 604 to move, so that the block 604 is engaged with the block groove 701, thereby limiting the hollow protective cover 7.

[0037] according to Figure 1-2 and Figure 4-7 As shown, a heat sink 101 is fixedly installed on the outside of the transformer body 1 . The setting of the heat sink 101 can accelerate the heat dissipation of the transformer body 1 , and the bottom of the transformer body 1 is connected to the first delivery pump 2 through a first connecting pipe 102 .

[0038] Specifically, the liquid outlet end of the first delivery pump 2 is connected to the first cooling pipe 202 through the second connecting pipe 201, and the first cooling pipe 202 is connected to the impurity removal box 204 through the third connecting pipe 203. A first rotating rod 2041 is rotatably arranged inside the impurity removal box 204, and a first bevel gear 2042 and a stirring blade 2043 are installed on the outside of the first rotating rod 2041. The first bevel gear 2042 is meshed with the second bevel gear, and the second bevel gear is installed on the outside of the driving rod 2044. The first bevel gear 2042 and the second bevel gear are both located inside the isolation box. The setting of the isolation box can reduce the influence of the coolant on the first bevel gear 2042 and the second bevel gear. One end of the driving rod 2044 penetrates into the inside of the fan barrel 3 The third bevel gear 301 is connected to the inside of the fan barrel 3, a turbine 2045 is arranged on the outside of the driving rod 2044, and the turbine 2045 is meshed with the worm 2046, one end of the worm 2046 is connected to the first driving motor 2047 arranged on the outside of the mounting cover, the third bevel gear 301 is meshed with the fourth bevel gear 302, and the fourth bevel gear 302 is installed on the outside of the second rotating rod 303, the second rotating rod 303 is rotatably connected to the inside of the fan barrel 3, and the fan blades 304 are symmetrically arranged on the outside of the second rotating rod 303, the air outlet of the fan barrel 3 is connected to the cooling box 306 through the air supply pipe 305, a refrigerator 3061 is arranged inside the cooling box 306, and the top of the refrigerator 3061 is connected to the cooling pipe 3062 , and the air outlet end of the cooling box 306 is connected to the uniform air plate 308 through the delivery pipe 307, the uniform air plate 308 is connected to the transformer body 1 through the L-shaped mounting plate 3081, and a plurality of groups of air outlet nozzles 3082 are installed on one side of the uniform air plate 308, a filter mechanism 4 is installed inside the impurity removal box 204, and the liquid outlet of the impurity removal box 204 is connected to the second delivery pump 501 arranged on the top of the transformer body 1 through the second cooling pipe 5, and the second delivery pump 501 is connected to the inside of the transformer body 1 through the fourth connecting pipe 502. When in use, the first delivery pump 2, the second delivery pump 501, the refrigerator 3061 and the first driving motor 2047 are turned on, and the cooling oil in the transformer body 1 passes through the first delivery pump 2 in sequence. The first connecting pipe 102, the second connecting pipe 201, the first cooling pipe 202 and the third connecting pipe 203 enter the impurity removal box 204 and are impurity removed under the action of the filter mechanism 4. Under the action of the second delivery pump 501, the cooling oil after impurity removal is transported to the transformer body 1 again through the second cooling pipe 5 and the fourth connecting pipe 502. Under the action of the first driving motor 2047, the worm 2046 drives the turbine 2045 and the driving rod 2044 to rotate. The driving rod 2044 drives the first bevel gear 2042 and the first rotating rod 2041 to rotate through the second bevel gear, thereby driving the stirring blade 2043 to rotate, and the oil containing impurities is dispersed, so as to avoid the impurities from gathering in one place for filtering.At the same time, under the action of the first driving motor 2047, the third bevel gear 301 drives the fourth bevel gear 302 and the second rotating rod 303 to rotate, so that the fan blade 304 rotates, and the wind generated by the rotation is delivered to the inside of the cooling box 306 for cooling, and finally enters the inside of the wind uniforming plate 308 and is ejected from the air outlet nozzle 3082 to accelerate the heat dissipation of the transformer body 1.

[0039] Specifically, the filter mechanism 4 includes a mounting frame 401, and a slot matching the mounting frame 401 is opened on the impurity removal box 204, a filter 402 is arranged on the inner side of the mounting frame 401, and a mounting plate 403 is arranged on the top of the mounting frame 401, the mounting plate 403 is connected to the impurity removal box 204 by a plurality of groups of bolts, and a handle is arranged on the top of the mounting plate 403, and the above arrangement facilitates the removal of the filter mechanism 4 for maintenance at a later time.

[0040] Specifically, a filter cleaning mechanism 8 used in conjunction with the filter 402 is installed inside the impurity removal box 204, and the filter cleaning mechanism 8 includes a second drive motor 801, and the second drive motor 801 can drive the first gear 802 to rotate, the first gear 802 is meshed with the second gear 803, and the first gear 802 is larger than the second gear 803, so the first gear 802 can drive the second gear 803 to accelerate the rotation, and the second gear 803 is installed on the outside of the screw mechanism 804, and one end of the screw mechanism 804 passes through the inside of the impurity removal box 204 and is connected to the impurity removal box 204. The moving block 805 is connected, and a long-rod cleaning brush 806 is installed on one side of the moving block 805. The brush head of the long-rod cleaning brush 806 contacts the outside of the filter 402. When the filter 402 needs to be cleaned, the second drive motor 801 is turned on. Under the action of the second drive motor 801, the first gear 802 drives the second gear 803 and the screw mechanism 804 to accelerate the rotation. Under the action of the rotation of the screw mechanism 804, the moving block 805 moves, thereby driving the long-rod cleaning brush 806 to be synchronously located to brush the surface of the filter 402.

[0041] In a further embodiment, a debris outlet is provided at the bottom of the debris removal box 204 on one side of the mounting frame 401, and the debris outlet is connected to the interior of the debris storage barrel 9. The filtered impurities enter the interior of the debris storage barrel 9 through the debris outlet under the action of their own gravity. A conical feed port is provided inside the debris storage barrel 9, which can reduce the backflow of impurities to a certain extent.

[0042] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-immersed transformer with a self-filtering impurity and cooling structure, comprising a transformer body (1), Features: A heat sink (101) is fixedly mounted on the outside of the transformer body (1), and the bottom of the transformer body (1) is connected to a first delivery pump (2) via a first connecting pipe (102), a liquid outlet of the first delivery pump (2) is connected to a first cooling pipe (202) via a second connecting pipe (201), and the first cooling pipe (202) is connected to a debris removal box (204) via a third connecting pipe (203), a first rotating rod (2041) is rotatably arranged inside the debris removal box (204), and A first bevel gear (2042) and a stirring blade (2043) are installed on the outside of the first rotating rod (2041), the first bevel gear (2042) is meshed with a second bevel gear, and the second bevel gear is installed on the outside of a driving rod (2044), one end of the driving rod (2044) penetrates into the inside of the fan tube (3) and is connected to a third bevel gear (301) arranged inside the fan tube (3), a turbine (2045) is arranged on the outside of the driving rod (2044), and the turbine (2045) is connected to the third bevel gear (301) arranged inside the fan tube (3). The worm (2046) is meshed with the first drive motor (2047) arranged outside the mounting cover at one end, the third bevel gear (301) is meshed with the fourth bevel gear (302), and the fourth bevel gear (302) is mounted outside the second rotating rod (303), the second rotating rod (303) is rotatably connected to the inside of the fan tube (3), and the second rotating rod (303) is symmetrically provided with fan blades (304), and the air outlet of the fan tube (3) is connected to the fan tube (3) through The air supply pipe (305) is connected to the cooling box (306), and the air outlet of the cooling box (306) is connected to the air uniforming plate (308) through a delivery pipe (307); a filter mechanism (4) is installed inside the impurity removal box (204), and the liquid outlet of the impurity removal box (204) is connected to a second delivery pump (501) arranged on the top of the transformer body (1) through a second cooling pipe (5); the second delivery pump (501) is connected to the inside of the transformer body (1) through a fourth connecting pipe (502).

2. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: The top of the transformer body (1) is symmetrically provided with a limit block (6), and both sides of the hollow protective cover (7) are provided with block grooves (701) for use in conjunction with the limit block (6).

3. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 2, Features: The limit block (6) includes a mounting vertical plate (601), and an open mounting tube (602) is provided on one side of the mounting vertical plate (601), a movable plate (603) is slidably provided inside the open mounting tube (602), and a block (604) used in conjunction with the block groove (701) is provided on one side of the movable plate (603), the other side of the movable plate (603) is connected to a handle (606) provided on the outer side of the mounting vertical plate (601) through a pull rod (605), and the side of the movable plate (603) close to the pull rod (605) is connected to the inner wall of one side of the open mounting tube (602) through a symmetrically arranged spring (607).

4. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: A refrigerator (3061) is disposed inside the cooling box (306), and a refrigeration pipe (3062) is connected to the top of the refrigerator (3061).

5. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: The air uniformity plate (308) is connected to the transformer body (1) via an L-shaped mounting plate (3081), and a plurality of groups of air outlet nozzles (3082) are mounted on one side of the air uniformity plate (308).

6. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: The filter mechanism (4) comprises a mounting frame (401), and a slot matching the mounting frame (401) is provided on the impurity removal box (204), a filter (402) is provided inside the mounting frame (401), and a mounting plate (403) is provided on the top of the mounting frame (401), the mounting plate (403) is connected to the impurity removal box (204) by a plurality of groups of bolts, and a handle is provided on the top of the mounting plate (403).

7. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: A filter cleaning mechanism (8) for use with the filter (402) is installed inside the impurity removal box (204).

8. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 7, Features: The filter cleaning mechanism (8) comprises a second drive motor (801), and the second drive motor (801) can drive the first gear (802) to rotate, the first gear (802) is meshed with the second gear (803), and the second gear (803) is installed on the outside of the screw mechanism (804), one end of the screw mechanism (804) passes through the interior of the impurity removal box (204) and is connected to the moving block (805), and a long rod cleaning brush (806) is installed on one side of the moving block (805), and the brush head of the long rod cleaning brush (806) is in contact with the outside of the filter (402).

9. The oil-immersed transformer with self-filtering impurities and cooling structure according to claim 1, Features: The bottom of the impurity removal box (204) is located on one side of the installation frame (401) and is provided with an impurity outlet, and the impurity outlet is communicated with the interior of the impurity storage barrel (9).

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