Novel oil-immersed distribution transformer

Abstract

The invention discloses a novel oil-immersed distribution transformer, and particularly relates to the field of oil-immersed distribution transformer equipment.The novel oil-immersed distribution transformer comprises a box body, a plurality of insulating columns are arranged on the top of the box body, and the top of the box body communicates with an oil conservator; the circulating cooling mechanism and the speed regulating mechanism are arranged, active cooling circulation is continuously carried out on oil in the oil-immersed distribution transformer, when the temperature of the oil is too high, the temperature of the oil in the oil-immersed distribution transformer enables air pressure in a copper pipe long cylinder to be heated and increased, a rotating structure for conveying the oil can be pushed to be switched, and therefore the oil-immersed distribution transformer is driven to rotate. The conveying speed of the oil liquid is increased by increasing the rotating speed of the conveying structure, cooling circulation can be faster, the cooling effect of the oil liquid is improved, meanwhile, the reciprocating stirring mechanism is arranged, when the temperature of the oil liquid rises, the oil liquid is stirred by means of multiple stirring plates located in the oil liquid, auxiliary mixing is conducted on the oil liquid, and therefore the oil liquid is evenly dispersed, and the cooling effect of the oil liquid is improved. And the situation that the local temperature in the oil is too high is avoided.

Description

Technical Field

[0001] This invention relates to the field of oil-immersed distribution transformer equipment technology, and more specifically, to a novel oil-immersed distribution transformer. Background Technology

[0002] Oil-immersed transformers are transformers that use petroleum-based liquids as sealing and heat-conducting media. Compared to dry-type transformers, oil-immersed transformers are less expensive. Due to the protective effect of the transformer oil, heat is less likely to accumulate inside the transformer, facilitating heat dissipation. At the same time, the internal coils and other working structures are less prone to oxidation due to high temperatures during operation, resulting in significantly lower operating costs compared to dry-type transformers.

[0003] Oil-immersed transformers use oil as the primary insulation medium and rely on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, and forced oil circulation.

[0004] However, in the operation of existing oil-immersed transformers, heat is inevitably generated, causing the oil inside the oil-immersed distribution transformer to heat up and thus change in volume. Existing technology only uses an oil conservator to buffer the heated oil and regulate the pressure to prevent the oil from expanding and causing damage. However, it cannot actively cool and circulate the oil inside the oil-immersed distribution transformer, nor can it make corresponding cooling adjustments according to the temperature changes of the oil. Meanwhile, existing technologies cannot disperse the oil when it heats up, which leads to excessively high oil temperature in the contact area with the transformer's interior. The oil in other areas cannot mix with it in time, making it difficult to absorb and dissipate heat evenly, resulting in localized excessively high oil temperature that is difficult to cool.

[0005] To address the aforementioned technical shortcomings, a solution is provided. Summary of the Invention

[0006] This invention provides a novel oil-immersed distribution transformer to solve the technical problems mentioned in the background art, namely, the inability to adjust cooling according to changes in oil temperature and the inability to uniformly distribute heat in the oil.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a novel oil-immersed distribution transformer, comprising a housing, wherein a plurality of insulating columns are provided on the top of the housing, an oil conservator is connected to the top of the housing, and a circulating cooling mechanism is provided on the outer wall of the housing; The circulating cooling mechanism includes an impeller and a conveying cooling structure. A rotating shaft is fixedly installed on the inner wall of the impeller, and a sleeve is slidably installed on the outer wall of the rotating shaft. A first rotating gear is fixedly installed on the outer wall of the sleeve, and the sleeve can drive the first rotating gear to move synchronously. A first gear meshes with the bottom of the first rotating gear, and a rotating rod is fixedly installed on the outer wall of the first gear. The rotating rod is rotatably installed on the outer wall of the housing. A reduction motor is provided on one side of the rotating rod, and the output end of the reduction motor is fixedly installed with the rotating rod. The reduction motor is fixedly installed on the outer wall of the housing, and a speed regulating mechanism is provided on the outer wall of the sleeve. The speed regulating mechanism includes a long copper tube fixedly installed on the inner wall of the housing. The long copper tube is located inside the housing. A piston plate is slidably installed on one inner wall of the long copper tube. A connecting rod is fixedly installed on one side of the piston plate. The bottom of the connecting rod is fixedly installed on the outer wall of the sleeve. A second rotating gear is fixedly installed on one outer wall of the sleeve. A second shift gear is provided at the bottom of the second rotating gear. The second shift gear is fixedly installed on the outer wall of the rotating rod. The movement of the piston plate inside the long copper tube can drive the sleeve to move synchronously, that is, the sleeve drives the second rotating gear to approach and mesh with the second shift gear.

[0008] In a preferred embodiment, the cooling conveying structure includes a liquid outlet pipe connected to the inner wall of the top of the housing, a liquid delivery tank connected to one side of the liquid outlet pipe, and a plurality of vertical copper pipes connected to the other side of the liquid delivery tank. The plurality of vertical copper pipes are fixedly installed on the outer wall of the housing, and are arranged vertically at equal intervals and connected end to end. A liquid inlet pipe is connected to one side of each vertical copper pipe, and the other side of the liquid inlet pipe is connected to the inner wall of the bottom of the housing.

[0009] In a preferred embodiment, a first pulley is fixedly installed on one side of the outer wall of the rotating shaft, a timing belt is rotatably installed on the outer wall of the first pulley, a second pulley is rotatably installed on one side of the timing belt, a fan wheel is rotatably installed on one side of the second pulley, the fan wheel is rotatably installed on the outer wall of the housing, and the fan wheel and the long copper tube are arranged parallel to each other.

[0010] In a preferred embodiment, the second rotating gear is arranged parallel to the first rotating gear, and the diameter of the second rotating gear is smaller than that of the first rotating gear.

[0011] In a preferred embodiment, the second gear and the first gear are arranged parallel to each other, the diameter of the second gear is greater than that of the first gear, the second gear and the second rotating gear are arranged in a mutually cooperating manner, and the distance between the second gear and the first gear is greater than the distance between the second rotating gear and the first rotating gear.

[0012] In a preferred embodiment, the copper tube is located inside the housing, the copper tube is horizontally positioned, the piston plate is vertically positioned, and the outer wall of the piston plate is in contact with the inner wall of the copper tube.

[0013] In a preferred embodiment, the housing is provided with a reciprocating stirring mechanism, which includes a belt gear disposed on the top of the first rotating gear. The belt gear is arranged vertically, and the outer wall of the belt gear is arranged correspondingly to the outer wall of the first rotating gear. The distance between the belt gear and the first rotating gear is the same as the distance between the second rotating gear and the second gear. A long belt rod is fixedly installed on one side of the belt gear, and the long belt rod is rotatably installed on the inner wall of the housing.

[0014] In a preferred embodiment, the outer wall of the middle section of the long belt rod is provided with a reciprocating threaded groove, and a horizontal belt plate is threadedly connected to the outer wall of the reciprocating threaded groove. The horizontal belt plate is slidably installed on the inner wall of the box. The horizontal belt plate is arranged in an I-shape, and multiple stirring plates are fixedly installed on the bottom of both sides of the horizontal belt plate. The multiple stirring plates are arranged vertically at equal intervals.

[0015] The technical effects and advantages of this invention are as follows: To address the problems mentioned in the background art, this invention provides an active cooling circulation system for the oil inside an oil-immersed distribution transformer. This system allows the oil to be individually delivered and cooled during operation. When the oil temperature is too high, the increased temperature causes the air pressure inside the long copper tube to rise, which in turn drives the rotating structure that transports the oil to switch positions. This increases the oil transport rate by increasing the rotational speed of the transport structure, facilitating faster cooling circulation and enhancing the cooling effect on the oil.

[0016] Meanwhile, by setting up a reciprocating stirring mechanism, when the oil temperature rises, multiple stirring plates located in the oil will stir the oil and assist in mixing it, so that the oil is evenly distributed and the local temperature in the oil is not too high. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a side view of the present invention.

[0019] Figure 3 This is a partial structural diagram of the present invention.

[0020] Figure 4 This is a partial cross-sectional view of the circulating cooling mechanism in this invention.

[0021] Figure 5 This is a vertical sectional view of the speed regulating mechanism in this invention.

[0022] Figure 6 This is a partial cross-sectional view of the speed regulating mechanism in this invention.

[0023] Figure 7 This is a cross-sectional view of the reciprocating stirring mechanism in this invention.

[0024] The attached diagram is labeled as follows: 1. Housing; 2. Insulating column; 3. Oil conservator; 4. Circulating cooling mechanism; 41. Liquid outlet pipe; 42. Liquid delivery tank; 43. Vertical copper pipe; 44. Liquid inlet pipe; 45. Impeller; 46. Rotating shaft; 48. First rotating gear; 49. First shifting gear; 410. Rotating rod; 411. Gearbox; 412. First pulley; 413. Synchronous belt; 414. Second pulley; 415. Fan wheel; 5. Speed ​​regulating mechanism; 51. Long copper tube; 52. Piston plate; 53. Connecting rod; 54. Second rotating gear; 55. Second shifting gear; 6. Reciprocating stirring mechanism; 61. Belt gear; 62. Long belt rod; 63. Reciprocating threaded groove; 64. Horizontal belt plate; 65. Stirring plate. Detailed Implementation

[0025] 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. Example 1

[0026] In existing oil-immersed transformers, heat is inevitably generated during operation, causing the oil inside the transformer to heat up. While existing technologies use oil conservators to regulate the temperature changes of the oil and prevent damage from oil expansion, they lack the ability to provide active cooling circulation for the oil inside the transformer and cannot adjust cooling according to temperature changes. To address this problem, the following technical solution is proposed: Refer to the instruction manual appendix Figures 1-7 A new type of oil-immersed distribution transformer, such as Figure 1 and Figure 2 As shown, it includes a housing 1, with multiple insulating columns 2 on the top of the housing 1, an oil reservoir 3 connected to the top of the housing 1, and a circulating cooling mechanism 4 on the outer wall of the housing 1. like Figure 4 and Figure 5As shown, the circulating cooling mechanism 4 includes an impeller 45 and a conveying cooling structure. A rotating shaft 46 is fixedly installed on the inner wall of the impeller 45. A sleeve 47 is slidably installed on the outer wall of the rotating shaft 46. A first rotating gear 48 is fixedly installed on the outer wall of the sleeve 47. The sleeve 47 can drive the first rotating gear 48 to move synchronously. A first gear 49 meshes with the bottom of the first rotating gear 48. A rotating rod 410 is fixedly installed on the outer wall of the first gear 49. The rotating rod 410 is rotatably installed on the outer wall of the housing 1. A reduction motor 411 is provided on one side of the rotating rod 410. The output end of the reduction motor 411 is fixedly installed with the rotating rod 410. The reduction motor 411 is fixedly installed on the outer wall of the housing 1. A speed regulating mechanism 5 is provided on the outer wall of the sleeve 47. When the geared motor 411 starts, it can drive the rotating rod 410 to rotate continuously. The rotation of the rotating rod 410 causes the first gear 49 to rotate synchronously. Since the first gear 49 and the first rotating gear 48 are meshed, the first rotating gear 48 is driven to rotate synchronously. The first rotating gear 48 can drive the sleeve 47 to rotate. The sleeve 47 causes the rotating shaft 46 to drive the impeller 45 to rotate continuously inside the liquid delivery tank 42.

[0027] like Figure 5 and Figure 6 As shown, the speed regulating mechanism 5 includes a copper tube 51 fixedly installed on the inner wall of the housing 1. The copper tube 51 is located inside the housing 1. A piston plate 52 is slidably installed on one side of the inner wall of the copper tube 51. A connecting rod 53 is fixedly installed on one side of the piston plate 52. The bottom of the connecting rod 53 is fixedly installed on the outer wall of the sleeve 47. A second rotating gear 54 is fixedly installed on one side of the outer wall of the sleeve 47. A second gear 55 is provided at the bottom of the second rotating gear 54. The second gear 55 is fixedly installed on the outer wall of the rotating rod 410. The movement of the piston plate 52 inside the copper tube 51 can push the sleeve 47 to move synchronously, that is, the sleeve 47 drives the second rotating gear 54 to approach and mesh with the second gear 55. The copper tube 51 is located inside the housing 1, and it is in continuous contact with the oil inside the housing 1. The temperature of the oil can be transferred to the copper tube 51 in real time. When the oil heats up, the temperature of the copper tube 51 heats up synchronously. As a result, the copper tube 51 expands and increases in pressure due to the increased temperature. The air pressure inside the copper tube 51 can push the piston plate 52, and the movement of the piston plate 52 synchronously drives the connecting rod 53 to move.

[0028] like Figure 2 and Figure 3As shown, the cooling conveying structure includes an outlet pipe 41 connected to the inner wall of the top of the box 1. One side of the outlet pipe 41 is connected to a liquid delivery tank 42, and the other side of the liquid delivery tank 42 is connected to multiple vertical copper pipes 43. The multiple vertical copper pipes 43 are fixedly installed on the outer wall of the box 1. The multiple vertical copper pipes 43 are arranged vertically at equal intervals and connected end to end. One side of the vertical copper pipes 43 is connected to an inlet pipe 44, and the other side of the inlet pipe 44 is connected to the inner wall of the bottom of the box 1. When the impeller 45 rotates inside the liquid delivery tank 42, the pressure change inside the liquid delivery tank 42 causes the outlet pipe 41 to draw the oil from the tank 1 into the liquid delivery tank 42 and then into multiple vertical copper pipes 43. Since the vertical copper pipes 43 are arranged vertically at equal intervals and connected end to end, the oil will enter the multiple vertical copper pipes 43 in sequence for heat dissipation, and then re-enter the tank 1 through the inlet pipe 44, thereby enabling active cooling of the oil in the tank 1.

[0029] like Figure 2 and Figure 5 As shown, a first pulley 412 is fixedly installed on one side of the outer wall of the rotating shaft 46. A timing belt 413 is rotatably installed on the outer wall of the first pulley 412. A second pulley 414 is rotatably installed on one side of the timing belt 413. A fan wheel 415 is rotatably installed on one side of the second pulley 414. The fan wheel 415 is rotatably installed on the outer wall of the housing 1. The fan wheel 415 and the copper tube 51 are arranged parallel to each other. The rotation of the shaft 46 causes the first pulley 412 to rotate synchronously, and then the first pulley 412 causes the second pulley 414 to drive the fan wheel 415 to rotate through the synchronous belt 413. That is, the fan wheel 415 stirs the airflow to cool the copper tube 51 and accelerates the cooling of the oil inside the copper tube 51.

[0030] like Figure 4 and Figure 6 As shown, the second rotating gear 54 and the first rotating gear 48 are arranged parallel to each other, and the diameter of the second rotating gear 54 is smaller than the diameter of the first rotating gear 48.

[0031] like Figure 4 and Figure 6 As shown, the second gear 55 and the first gear 49 are arranged parallel to each other. The diameter of the second gear 55 is greater than that of the first gear 49. The second gear 55 and the second rotating gear 54 are arranged in a mutually cooperating manner. The distance between the second gear 55 and the first gear 49 is greater than the distance between the second rotating gear 54 and the first rotating gear 48. The second rotating gear 54 moves and approaches the second shift gear 55. Since the size of the second shift gear 55 is larger than that of the first shift gear 49, and the size of the second rotating gear 54 is smaller than that of the first rotating gear 48, the second rotating gear 54 can rotate faster when it meshes with the second shift gear 55 driven by the reduction motor 411.

[0032] like Figure 5 and Figure 6 As shown, the copper tube 51 is located inside the housing 1. The copper tube 51 is set horizontally, and the piston plate 52 is set vertically. The outer wall of the piston plate 52 is in contact with the inner wall of the copper tube 51.

[0033] In practical implementation, the geared motor 411 drives the rotating rod 410 to rotate continuously. The rotation of the rotating rod 410 causes the first gear 49 to rotate synchronously. Since the first gear 49 and the first rotating gear 48 are meshed, the first rotating gear 48 is also driven to rotate synchronously. The first rotating gear 48 can drive the sleeve 47 to rotate. The sleeve 47 causes the rotating shaft 46 to drive the impeller 45 to rotate continuously inside the liquid delivery tank 42. The impeller 45 increases the pressure inside the liquid delivery tank 42, causing the outlet pipe 41 to draw oil from the tank 1 into the liquid delivery tank 42 and then into multiple vertical... In the copper tube 43, since the vertical copper tubes 43 are arranged vertically at equal intervals and connected end to end, the oil will enter the multiple vertical copper tubes 43 in sequence. The rotation of the rotating shaft 46 causes the first pulley 412 to rotate synchronously. Then, the first pulley 412 causes the second pulley 414 to drive the fan wheel 415 to rotate through the synchronous belt 413. That is, the fan wheel 415 stirs the airflow to cool the copper tube cylinder 51, accelerates the cooling of the oil in the copper tube cylinder 51, and then re-enters the tank 1 through the liquid inlet pipe 44, so as to actively cool the oil in the tank 1. When the oil heats up, its temperature causes the copper tube 51 to heat up synchronously. As a result, the gas pressure inside the copper tube 51 expands due to the increased temperature, which in turn increases the gas pressure inside the copper tube 51 and pushes the piston plate 52. The movement of the piston plate 52 synchronously drives the connecting rod 53 to move. The movement of the connecting rod 53 drives the sleeve 47, causing the second rotating gear 54 and the first rotating gear 48 to move forward together. At this time, the second rotating gear 54 moves and approaches the second gear 55, thereby enabling the second rotating gear 54 to mesh with the second gear 55. The second gear 54 rotates faster due to the second gear 55 driven by the reduction motor 411. This allows the oil delivery rate and cooling effect to be improved by adjusting the rotation speed when the oil temperature is too high. Example 2

[0034] In existing technologies, the oil cannot be dispersed when it heats up, leading to excessively high oil temperatures in the contact area with the transformer's interior. Oil in other areas cannot mix with the transformer in time, making it difficult to evenly absorb and dissipate heat, resulting in localized overheating of the oil and making it difficult to cool. To solve this problem, the following technical solution is proposed: like Figure 2 and Figure 7 As shown, the housing 1 is equipped with a reciprocating stirring mechanism 6. The reciprocating stirring mechanism 6 includes a belt gear 61 disposed on the top of the first rotating gear 48. The belt gear 61 is disposed vertically, and the outer wall of the belt gear 61 is disposed corresponding to the outer wall of the first rotating gear 48. The distance between the belt gear 61 and the first rotating gear 48 is the same as the distance between the second rotating gear 54 and the second gear 55. A long belt rod 62 is fixedly installed on one side of the belt gear 61, and the long belt rod 62 is rotatably installed on the inner wall of the housing 1. When the first rotating gear 48 and the second rotating gear 54 move forward synchronously, and the second rotating gear 54 meshes with the second shift gear 55, the first rotating gear 48 also synchronously corresponds to the position of the belt gear 61 and meshes with it. That is, the rotation of the first rotating gear 48 drives the belt gear 61 to rotate synchronously.

[0035] like Figure 7 As shown, a reciprocating threaded groove 63 is provided on the outer wall of the middle part of the long belt rod 62. A horizontal belt plate 64 is threadedly connected to the outer wall of the reciprocating threaded groove 63. The horizontal belt plate 64 is slidably installed on the inner wall of the box body 1. The horizontal belt plate 64 is arranged in an H shape. Multiple stirring plates 65 are fixedly installed on the bottom of both sides of the horizontal belt plate 64. The multiple stirring plates 65 are arranged vertically and equidistantly. The gear 61 drives the long belt rod 62 to rotate and the reciprocating threaded groove 63 on its outer wall causes the horizontal belt plate 64 to move back and forth, thereby driving multiple stirring plates 65 to stir the oil in the tank 1.

[0036] In specific implementation, when the first rotating gear 48 and the second rotating gear 54 move forward synchronously, the first rotating gear 48 also corresponds to the position of the belt gear 61 and meshes with it synchronously. That is, the rotation of the first rotating gear 48 drives the belt gear 61 to rotate synchronously. The belt gear 61 drives the long belt rod 62 to rotate and causes the horizontal belt plate 64 to move back and forth through the reciprocating thread groove 63 on its outer wall. In turn, the horizontal belt plate 64 drives multiple stirring plates 65 to stir and mix the oil in the box 1, so that the oil is evenly distributed and the local temperature in the oil is not too high.

[0037] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel oil-immersed distribution transformer, comprising a housing (1), wherein a plurality of insulating posts (2) are provided on the top of the housing (1), and an oil conservator (3) is connected to the top of the housing (1), characterized in that, The outer wall of the box (1) is provided with a circulating cooling mechanism (4); The circulating cooling mechanism (4) includes an impeller (45) and a conveying cooling structure. A rotating shaft (46) is fixedly installed on the inner wall of the impeller (45). A sleeve (47) is slidably installed on the outer wall of the rotating shaft (46). A first rotating gear (48) is fixedly installed on the outer wall of the sleeve (47). The sleeve (47) can drive the first rotating gear (48) to move synchronously. A first gear (49) meshes with the bottom of the first rotating gear (48). A rotating rod (410) is fixedly installed on the outer wall of the first gear (49). The rotating rod (410) is rotatably installed on the outer wall of the housing (1). A speed-regulating mechanism (5) is provided on one side of the rotating rod (410). The output end of the speed-regulating motor (411) is fixedly installed with the rotating rod (410). The speed-regulating motor (411) is fixedly installed on the outer wall of the housing (1). A speed-regulating mechanism (5) is provided on the outer wall of the sleeve (47). The speed regulating mechanism (5) includes a copper tube (51) fixedly installed on the inner wall of the housing (1). The copper tube (51) is located inside the housing (1). A piston plate (52) is slidably installed on one side of the inner wall of the copper tube (51). A connecting rod (53) is fixedly installed on one side of the piston plate (52). The bottom of the connecting rod (53) is fixedly installed on the outer wall of the sleeve (47). A second rotating gear (54) is fixedly installed on one side of the outer wall of the sleeve (47). A second gear (55) is provided at the bottom of the second rotating gear (54). The second gear (55) is fixedly installed on the outer wall of the rotating rod (410). The movement of the piston plate (52) inside the copper tube (51) can drive the sleeve (47) to move synchronously, that is, the sleeve (47) drives the second rotating gear (54) to approach and mesh with the second gear (55).

2. The novel oil-immersed distribution transformer according to claim 1, characterized in that: The cooling conveying structure includes an outlet pipe (41) connected to the inner wall of the top of the box (1). One side of the outlet pipe (41) is connected to a liquid delivery box (42), and the other side of the liquid delivery box (42) is connected to a plurality of vertical copper pipes (43). The plurality of vertical copper pipes (43) are fixedly installed on the outer wall of the box (1). The plurality of vertical copper pipes (43) are arranged vertically at equal intervals and are connected end to end. One side of the vertical copper pipe (43) is connected to an inlet pipe (44), and the other side of the inlet pipe (44) is connected to the inner wall of the bottom of the box (1).

3. A novel oil-immersed distribution transformer according to claim 1, characterized in that: A first pulley (412) is fixedly installed on one side of the outer wall of the rotating shaft (46). A timing belt (413) is rotatably installed on the outer wall of the first pulley (412). A second pulley (414) is rotatably installed on one side of the timing belt (413). A fan wheel (415) is rotatably installed on one side of the second pulley (414). The fan wheel (415) is rotatably installed on the outer wall of the housing (1). The fan wheel (415) and the long copper tube (51) are arranged parallel to each other.

4. A novel oil-immersed distribution transformer according to claim 1, characterized in that: The second rotating gear (54) is arranged parallel to the first rotating gear (48), and the diameter of the second rotating gear (54) is smaller than that of the first rotating gear (48).

5. A novel oil-immersed distribution transformer according to claim 1, characterized in that: The second gear (55) and the first gear (49) are arranged parallel to each other. The diameter of the second gear (55) is greater than that of the first gear (49). The second gear (55) and the second rotating gear (54) are arranged in a mutually cooperating manner. The distance between the second gear (55) and the first gear (49) is greater than the distance between the second rotating gear (54) and the first rotating gear (48).

6. A novel oil-immersed distribution transformer according to claim 1, characterized in that: The copper tube (51) is located inside the box (1). The copper tube (51) is set in a horizontal state, and the piston plate (52) is set in a vertical state. The outer wall of the piston plate (52) is in contact with the inner wall of the copper tube (51).

7. A novel oil-immersed distribution transformer according to claim 1, characterized in that: The housing (1) is equipped with a reciprocating stirring mechanism (6). The reciprocating stirring mechanism (6) includes a belt gear (61) located on the top of the first rotating gear (48). The belt gear (61) is arranged vertically. The outer wall of the belt gear (61) is arranged correspondingly to the outer wall of the first rotating gear (48). The distance between the belt gear (61) and the first rotating gear (48) is the same as the distance between the second rotating gear (54) and the second gear (55). A long belt rod (62) is fixedly installed on one side of the belt gear (61). The long belt rod (62) is rotatably installed on the inner wall of the housing (1).

8. A novel oil-immersed distribution transformer according to claim 7, characterized in that: The long strip (62) has a reciprocating threaded groove (63) on its outer wall in the middle. A horizontal strip plate (64) is threadedly connected to the outer wall of the reciprocating threaded groove (63). The horizontal strip plate (64) is slidably installed on the inner wall of the box (1). The horizontal strip plate (64) is arranged in an I-shape. Multiple stirring plates (65) are fixedly installed on the bottom of both sides of the horizontal strip plate (64). The multiple stirring plates (65) are arranged vertically at equal intervals.

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