An oil-immersed transformer oil tank

Abstract

The application relates to the technical field of transformer oil tanks, and discloses an oil-immersed transformer oil tank which comprises a transformer tank body, wiring control assemblies are arranged at the front end and the rear end of the transformer tank body, an oil liquid cooling mechanism is arranged on one side of the transformer tank body, the oil liquid cooling mechanism comprises a cooling bin body which is fixedly connected to one side of the transformer tank body, an oil pump is arranged at the top of the cooling bin body, the input end of the oil pump and the inside of the transformer tank body are in intercommunication, and the output end of the cooling bin body and the inside of the transformer tank body are in intercommunication; the oil-immersed transformer oil tank utilizes the kinetic energy of oil flow to drive the rotation of an internal impeller, forms forced air flow, and realizes the high-efficiency cooling of multilayer spiral heat dissipation pipes, does not need an additional power device, reduces energy consumption and operation cost, realizes the high-efficiency combination of the kinetic energy conversion of cooling oil flow, heat dissipation, and degassing functions, and significantly improves the heat dissipation efficiency and system reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer oil tank, more particularly, it relates to an oil-immersed transformer oil tank. BACKGROUND

[0002] As a key equipment in power system, the heat dissipation performance of oil-immersed transformer directly affects the operation stability and service life. The traditional oil tank structure usually relies on oil pump to drive cooling oil circulation and realizes heat exchange through external radiator. However, in actual operation process, bubbles are easy to be generated in cooling oil, which may cause partial discharge or decrease of insulation strength, affecting the safety of equipment. In addition, the common air cooling or self-cooling mode often has limited heat dissipation efficiency, especially under high temperature or high load working conditions, it is difficult to realize sufficient heat dissipation, and there is a risk of high temperature rise.

[0003] The current cooling system of oil-immersed transformer relies on independent power source to drive fan or oil pump, which not only increases energy consumption, but also increases system complexity and failure probability. Especially in the process of cooling oil flow, the problems of bubble separation and accumulation have not been effectively solved, and most designs rely on static sedimentation or external degassing device, which has limited effect and slow response. At the same time, the heat exchange between cooling air flow and oil circuit often relies on natural convection or forced air supply, and its efficiency is obviously restricted by environmental conditions, which makes it difficult to realize stable and efficient heat management.

[0004] Therefore, there is an urgent need for an oil-immersed transformer cooling structure which can realize efficient heat dissipation by utilizing oil flow force independently and has online bubble removal function, so as to improve the overall energy efficiency and reliability of the system and reduce the dependence on external energy and auxiliary equipment. SUMMARY

[0005] In order to overcome the above technical problems, the present application provides an oil-immersed transformer oil tank.

[0006] The present application realizes the above-mentioned purposes through the following technical solutions:

[0007] An oil-immersed transformer oil tank, comprising a transformer tank body, a wiring control assembly is arranged at both ends of the transformer tank body, and an oil cooling mechanism is arranged on one side of the transformer tank body.

[0008] The oil cooling mechanism comprises a cooling bin body which is tightly connected with one side of the transformer tank body, and an oil pump is arranged at the top of the cooling bin body.

[0009] The input end of the oil pump and the inside of the transformer tank body are in communication with each other, and the output end of the cooling bin body and the inside of the transformer tank body are in communication with each other.

[0010] The inside of the cooling bin body is provided with an air extraction assembly, a cooling assembly and a driving assembly from top to bottom.

[0011] The bottom of the cooling chamber is an open structure, and a support frame is provided at the bottom of the inner wall of the cooling chamber. The central bearing at the top of the support frame supports the central shaft.

[0012] As a further optimization of the present invention, the input end of the oil pump is provided with an oil inlet pipe that communicates with the inside of the transformer tank, the output end of the oil pump is provided with an oil delivery pipe, the output end of the oil delivery pipe communicates with the inside of the cooling chamber and is provided with an oil guide pipe extending into the inside of the cooling chamber, the output end of the oil guide pipe is provided with a flow guide port, and the output end of the cooling chamber is provided with a return oil pipe that communicates with the inside of the transformer tank.

[0013] As a further optimization of the present invention, the air extraction assembly includes several sets of return springs disposed at the top of the interior of the cooling chamber. A piston plate is disposed at the bottom of the return springs. The edge of the piston plate is sealed against the inner wall of the cooling chamber. The middle of the piston plate is open from top to bottom, and a one-way air valve is disposed at the middle of the top of the piston plate.

[0014] As a further optimization of the present invention, a lower wedge ring is fastened to the top of the central shaft, and an upper wedge ring that is adapted to the lower wedge ring is provided in the middle of the bottom of the piston plate. The middle parts of both the lower wedge ring and the upper wedge ring are hollow structures. A protective spring extending into the upper wedge ring is provided at the bottom of the lower wedge ring. The longitudinal height of the protective spring is greater than the longitudinal height of the lower wedge ring and the upper wedge ring combined.

[0015] As a further optimization of the present invention, the cooling assembly includes a flow guide plate disposed on the top of the outer side of the central shaft. The edge of the flow guide plate is tightly and sealed to the inner wall of the cooling chamber. The flow guide plate is a single-layer spiral ramp structure. The output end of the flow guide port corresponds to the top of the ramp of the flow guide plate. A bearing seat is disposed between the middle of the flow guide plate and the outer side of the central shaft.

[0016] As a further optimization of the present invention, the bottom of the top guide plate is provided with several sets of spirally arranged heat dissipation pipes. The input end of the heat dissipation pipes is connected to the top of the top guide plate, and the input end of the heat dissipation pipes corresponds to the bottom position of the slope of the top guide plate. The bottom of the heat dissipation pipes is provided with a guide chamber. The bottom of the inner wall of the cooling chamber is provided with a guide bottom plate. The guide bottom plate is an annular circular plate structure. A support ring is provided on the inner side of the guide bottom plate. The cooling oil discharged from the output end of the guide chamber falls into the area enclosed by the inner wall of the cooling chamber, the top of the guide bottom plate, and the outer side of the support ring.

[0017] As a further optimization scheme of the present application, the driving assembly comprises an inner support ring slidingly supported on the top of the support ring, the outer side of the central shaft is tightly arranged with a central bearing seat, the outer side of the central bearing seat is uniformly arranged with a plurality of groups of airflow impellers tightly connected with the inner wall of the inner support ring, the outer side of the inner support ring is uniformly arranged with a plurality of groups of guide vanes, the end of the guide vane away from the inner support ring is commonly provided with an outer support ring, and the outer side of the outer support ring is rotationally attached to the inner wall of the cooling bin body.

[0018] As a further optimization scheme of the present application, the inner support ring and the outer support ring are provided with lower grooves on the top of the side close to each other, and the top of the two groups of lower grooves commonly supports a support top plate, the outer side of the support top plate is tightly connected with the inner wall of the cooling bin body, the inner side of the support top plate is provided with a guide ring cylinder, the guide ring cylinder is sleeved on the outer side of the central shaft, and the guide ring cylinder is sleeved in the innermost group of heat dissipation pipes.

[0019] As a further optimization scheme of the present application, the blade direction of the airflow impeller and the guide vane is opposite, the rotation of the guide vane drives the rotation of the airflow impeller to guide the external airflow into the inside of the guide ring cylinder, and the outer side of the guide ring cylinder is uniformly provided with airflow through holes.

[0020] As a further optimization scheme of the present application, the outer side of the cooling bin body is uniformly provided with heat dissipation through holes, the top of the outer side of the cooling bin body is uniformly provided with a plurality of groups of exhaust through holes, the inside of the exhaust through holes is communicated with the top area of the piston plate, and the inside of the heat dissipation through holes is communicated with the position area of the heat dissipation pipe.

[0021] The present application has the following advantages:

[0022] 1. The present application utilizes the kinetic energy of the oil flow to drive the internal impeller to rotate, forming a forced airflow to efficiently cool the multi-layer spiral heat dissipation pipes, without the need for additional power devices, reducing energy consumption and operating costs, and realizing the efficient combination of cooling oil flow power and heat dissipation, gas removal functions by converting the kinetic energy of the cooling oil, significantly improving the heat dissipation efficiency and system reliability.

[0023] 2. The present application realizes real-time extraction and discharge of air bubbles during the oil circulation process through the air extraction assembly, avoiding the influence on the insulation performance and improving the operation safety of the transformer. The overall structure is compact and reasonable, realizing multi-stage heat exchange and gas-liquid separation in a limited space, and enhancing the adaptability and stability of the system under high temperature and high load conditions.

[0024] 3. The oil tank mechanism of the present application has the characteristics of self-driving and low maintenance, reducing the need for external dependence and manual intervention, especially suitable for harsh environments or long-term operation scenarios, and has good engineering application prospect and promotion value. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure of the present application Figure 1 ;

[0026] Figure 2 is the overall structure of the present application Figure 2 ;

[0027] Figure 3 is the overall structure of the present application

[0028] Figure 4 is the overall structure of the present application

[0029] Figure 5 is the overall structure of the present application

[0030] Figure 6 is the overall structure of the present application

[0031] Figure 7 is the overall structure of the present application

[0032] Figure 8 is the overall structure of the present application

[0033] Figure 9 is the overall structure of the present application

[0034] Figure 10 is the overall structure of the present application

[0035] Figure 11 is the overall structure of the present application Figure 10

[0036] is the overall structure of the present application Figure 12

[0037] is the overall structure of the present application Figure 13

[0038] is the overall structure of the present application

[0039] 100, transformer box; 200, oil cooling mechanism; 300, wiring control assembly;

[0040] 201, cooling bin; 202, oil inlet pipe; 203, oil pump; 204, oil delivery pipe; 205, heat dissipation hole; 206, oil return pipe; 207, one-way air valve; 208, exhaust hole; 209, flow guide top plate; 210, heat dissipation pipe; ​

[0041] 211. Guide plate; 212. Support frame; 213. Lower wedge ring; 214. Piston plate; 215. Return spring; 216. Oil guide pipe; 217. Central shaft; 218. Support ring; 219. Guide port; 220. Upper wedge ring;

[0042] 221. Flow guide ring; 222. Outer support ring; 223. Support top plate; 224. Protective spring; 225. Flow guide chamber; 226. Central bearing seat; 227. Airflow impeller; 228. Inner support ring; 229. Flow guide impeller. Detailed Implementation

[0043] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0044] Example 1

[0045] like Figure 1 , Figure 2 As shown, an oil-immersed transformer tank includes a transformer tank 100, with wiring control components 300 installed at both the front and rear ends of the transformer tank 100, and an oil cooling mechanism 200 installed on one side of the transformer tank 100.

[0046] like Figure 1 , Figures 3 to 7 As shown, the oil cooling mechanism 200 includes a cooling chamber 201 that is fastened to one side of the transformer housing 100, and an oil pump 203 is provided on the top of the cooling chamber 201.

[0047] The input end of the oil pump 203 is connected to the interior of the transformer housing 100, and the output end of the cooling chamber 201 is connected to the interior of the transformer housing 100.

[0048] The input end of the oil pump 203 is provided with an oil inlet pipe 202 that is connected to the inside of the transformer housing 100. The output end of the oil pump 203 is provided with an oil delivery pipe 204. The output end of the oil delivery pipe 204 is connected to the inside of the cooling chamber 201 and is provided with an oil guide pipe 216 that extends into the inside of the cooling chamber 201. The output end of the oil guide pipe 216 is provided with a flow guide port 219. The output end of the cooling chamber 201 is provided with a return oil pipe 206 that is connected to the inside of the transformer housing 100.

[0049] like Figure 1 ,Figures 3 to 7 As shown, the inside of the cooling bin body 201 is provided with an air extraction assembly, a cooling assembly and a driving assembly from top to bottom, respectively;

[0050] The bottom of the cooling bin body 201 is of an open structure, and the bottom of the inner wall of the cooling bin body 201 is provided with a support frame 212, and the middle part of the top of the support frame 212 is supported by a bearing with a central shaft 217;

[0051] As shown in Figure 6 , Figure 7 , Figure 9 The air extraction assembly includes a plurality of sets of return springs 215 arranged at the top of the inside of the cooling bin body 201, the bottom of the return springs 215 is commonly provided with a piston plate 214, the edge of the piston plate 214 is tightly sealed and fitted to the inner wall of the cooling bin body 201, the middle part of the piston plate 214 is through from top to bottom, and the middle part of the top of the piston plate 214 is provided with a one-way air valve 207, the top end of the central shaft 217 is tightly connected with a lower wedge-shaped ring 213, the middle part of the lower wedge-shaped ring 213 and the upper wedge-shaped ring 220 is of a hollow structure, the bottom of the inside of the lower wedge-shaped ring 213 is provided with a protection spring 224 extending into the inside of the upper wedge-shaped ring 220, the longitudinal height of the protection spring 224 is greater than the longitudinal height of the combined lower wedge-shaped ring 213 and upper wedge-shaped ring 220;

[0052] As shown in Figures 5 to 8 , Figure 10 , Figure 11 The cooling assembly includes a flow guide top plate 209 arranged at the top of the outside of the central shaft 217, the edge of the flow guide top plate 209 is tightly and sealingly connected with the inner wall of the cooling bin body 201, the flow guide top plate 209 is of a single-layer spiral slope structure, the output end of the flow guide port 219 corresponds to the top of the slope of the flow guide top plate 209, the middle part of the flow guide top plate 209 and the outside of the central shaft 217 is provided with a bearing seat, the bottom of the flow guide top plate 209 is provided with a plurality of sets of spiral sleeve distributed heat pipes 210, the input end of the heat pipe 210 and the top of the flow guide top plate 209 are in communication with each other, and the input end of the heat pipe 210 corresponds to the bottom position of the slope of the flow guide top plate 209, the bottom of the heat pipe 210 is commonly provided with a flow guide bin 225, the bottom of the inner wall of the cooling bin body 201 is provided with a flow guide bottom plate 211, the flow guide bottom plate 211 is of an annular circular plate structure, the inside of the flow guide bottom plate 211 is provided with a support ring 218, the cooling oil discharged from the output end of the flow guide bin 225 falls into the area enclosed between the inner wall of the cooling bin body 201, the top of the flow guide bottom plate 211 and the outside of the support ring 218;

[0053] As shown in Figures 10 to 13As shown, the drive assembly includes an inner support ring 228 slidingly supported on the top of the support ring 218, and the outer side of the central shaft 217 is tightly arranged with a central bearing seat 226, and the outer side of the central bearing seat 226 is uniformly arranged with a plurality of groups of airflow impellers 227 which are tightly connected with the inner wall of the inner support ring 228, and the outer side of the inner support ring 228 is uniformly arranged with a plurality of groups of guide vanes 229, and the end of the guide vanes 229 away from the inner support ring 228 is commonly provided with an outer support ring 222, and the outer side of the outer support ring 222 is rotationally attached to the inner wall of the cooling bin body 201, and the top of the side of the inner support ring 228 and the outer support ring 222 close to each other is provided with a lower groove, and the top of the two groups of lower grooves commonly supports a support top plate 223, and the outer side of the support top plate 223 is tightly connected with the inner wall of the cooling bin body 201, and the inner side of the support top plate 223 is provided with a guide ring cylinder 221, and the guide ring cylinder 221 is sleeved on the outer side of the central shaft 217, and the guide ring cylinder 221 is sleeved inside the innermost group of heat dissipation pipes 210.

[0054] The blades of the airflow impellers 227 and the guide vanes 229 are opposite, and the rotation of the guide vanes 229 drives the rotation of the airflow impellers 227 to guide the external airflow into the inside of the guide ring cylinder 221, and the outside of the guide ring cylinder 221 is uniformly provided with airflow through holes, and the outside of the cooling bin body 201 is uniformly provided with heat dissipation through holes 205, and the top of the outside of the cooling bin body 201 is uniformly provided with a plurality of groups of exhaust through holes 208, and the inside of the exhaust through holes 208 is communicated with the top area of the piston plate 214, and the inside of the heat dissipation through holes 205 is communicated with the position area of the heat dissipation pipes 210.

[0055] The use process of the oil-immersed transformer oil tank proposed in this embodiment is as follows: when the transformer oil tank is in use, the inside of the transformer oil tank is filled with cooling oil for cooling;

[0056] During the use of the transformer, the transformer core inside the transformer tank 100 exchanges heat with the cooling oil, thereby achieving the purpose of heat dissipation;

[0057] By starting the oil pump 203 to extract the high-temperature cooling oil inside the transformer tank 100, and then delivering it to the inside of the cooling bin body 201 through the oil delivery pipe 204;

[0058] Then, the high-temperature cooling oil is introduced into the inside of the cooling bin body 201 through the oil guide pipe 216, and is guided out to the top of the guide top plate 209 from the position of the guide port 219. At this time, the high-temperature cooling oil introduced into the top of the guide top plate 209 flows downward to the input end of the heat dissipation pipe 210 through the spiral inclined surface structure design of the guide top plate 209;

[0059] Then, the high-temperature cooling oil enters the inside of the guide bin 225 through the spiral guide of the heat dissipation pipe 210, and is guided out through the guide bin 225;

[0060] The cooling oil discharged through the flow guide bin 225 has the gravity potential of falling and the pushing energy in the process of being extracted by the oil pump 203, so that the cooling oil generates a pushing force on the flow guide impeller 229 below it, so that the flow guide impeller 229 rotates, and through the rotation of the flow guide impeller 229, the outer support ring 222 and the inner support ring 228 are synchronously driven to rotate, and the bottom of the inner support ring 228 is supported by the support ring 218, so that the inner support ring 228 can stably rotate;

[0061] Through the baffle effect of the support top plate 223, the cooling oil sprayed through the flow guide bin 225 cannot overflow to the outside of the outer support ring 222 and the inner support ring 228;

[0062] Further, the rotation of the inner support ring 228 drives the airflow impeller 227 to rotate, and the airflow generated by the airflow impeller 227 drives the airflow outside the cooling bin body 201 to enter the area of the airflow impeller 227 through the bottom of the cooling bin body 201, and is guided to the inside of the flow guide ring cylinder 221 by the airflow impeller 227;

[0063] The airflow pushed into the inside of the flow guide ring cylinder 221 is dispersed to the outside area of the heat dissipation pipe 210 through the airflow through hole outside the flow guide ring cylinder 221, so that the airflow dissipates heat from the heat dissipation pipe 210, and the heat absorbed by the cooling oil is quickly dissipated and discharged from the position of the heat dissipation through hole 205, thereby realizing the function of cooling the high-temperature cooling oil;

[0064] With the rotation of the airflow impeller 227, the central shaft 217 in the middle of the central bearing seat 226 is driven to rotate, and through the rotation of the central shaft 217, the lower wedge-shaped ring 213 is further driven to rotate, and through the rotation of the lower wedge-shaped ring 213, the upper wedge-shaped ring 220 is squeezed to displace, and the top of the upper wedge-shaped ring 220 is limited by the piston plate 214 and cannot rotate, so that the upper wedge-shaped ring 220 is pushed upward by the rotation of the lower wedge-shaped ring 213, and the piston plate 214 is synchronously displaced upward, and the return spring 215 is compressed by the upward displacement of the piston plate 214;

[0065] At this time, with the upward displacement of the piston plate 214, the area between the piston plate 214 and the flow guide top plate 209 increases, the air pressure decreases, and the area forms a negative pressure state, so that the gas bubbles contained in the cooling oil flowing on the top of the flow guide top plate 209 are sucked out, thereby reducing the influence of the gas bubbles in the cooling oil on the internal core of the transformer tank 100;

[0066] During the upward displacement of the piston plate 214, the one-way air valve 207 is also in a closed state under the action of the atmospheric pressure on its top;

[0067] With the continuous rotation of the lower wedge ring 213, the wedge-shaped misalignment of the upper wedge ring 220 and the lower wedge ring 213 reaches a cycle position, at which the lower wedge ring 213 no longer pushes the upper wedge ring 220, and under the action of the return spring 215, the piston plate 214 is pushed to move downward as a whole, thereby synchronously moving the upper wedge ring 220 downward to be engaged with the lower wedge ring 213 again, and the height of the protection spring 224 is limited to avoid the hard impact problem of the lower wedge ring 213 and the upper wedge ring 220;

[0068] Further, in the process of downward displacement of the piston plate 214, since the displacement of the piston plate 214 is fast, the airflow at the top region of the guide top plate 209 is compressed, the closing effect of the one-way air valve 207 is opened by the compressed airflow, thereby making the airflow at the top region of the guide top plate 209 discharged from the region at the top of the piston plate 214, thereby ensuring that the gas extracted from the cooling oil is discharged from the region of the guide top plate 209;

[0069] The airflow discharged to the top region of the piston plate 214 is communicated with the outside atmosphere through the exhaust hole 208, and is then diffused into the outside atmosphere;

[0070] Further, through the cooperation of the above-mentioned various components, the heat dissipation effect of the transformer cooling oil is achieved, at the same time, the kinetic potential energy and the gravitational potential energy of the flow of the cooling oil are used to drive the displacement of the piston plate 214, thereby extracting the gas bubbles in the cooling oil to achieve the gas bubble removal function of the cooling oil, and further, the heat exchange between the cooling wind transported by the airflow impeller 227 and the heat dissipation pipe 210 is further carried out, thereby making the heat absorbed by the heat dissipation pipe 210 from the cooling oil be quickly dissipated, thereby improving the heat dissipation efficiency of the cooling oil.

[0071] The specific embodiments of the present application are described above, but the embodiments of the present application are not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not limiting, and those skilled in the art can make many forms under the inspiration of the embodiments of the present application, which all belong to the protection of the embodiments of the present application.

Claims

1. An oil-immersed transformer tank, comprising a transformer tank body (100), a wiring control assembly (300) is arranged at both front and rear ends of the transformer tank body (100), characterized in that, The transformer box (100) is provided with an oil cooling mechanism (200) on one side; The oil cooling mechanism (200) comprises a cooling bin body (201) which is fastened and connected to one side of the transformer box (100), and the top of the cooling bin body (201) is provided with an oil pump (203); The input end of the oil pump (203) is in communication with the inside of the transformer box (100), and the output end of the cooling bin body (201) is in communication with the inside of the transformer box (100); The inside of the cooling bin body (201) is provided with an air extraction assembly, a cooling assembly and a driving assembly from top to bottom; The bottom of the cooling bin body (201) is of an open structure, and the bottom of the inner wall of the cooling bin body (201) is provided with a support frame (212), and the top of the middle of the support frame (212) is supported by a central shaft (217) through a bearing. The air extraction assembly comprises a plurality of sets of return springs (215) arranged on the top of the inside of the cooling bin body (201), the bottom of the return springs (215) is provided with a piston plate (214) in common, the edge of the piston plate (214) is sealingly attached to the inner wall of the cooling bin body (201), the middle of the piston plate (214) is penetrated from top to bottom, and the middle of the top of the piston plate (214) is provided with a one-way air valve (207); The top end of the central shaft (217) is fastened and connected with a lower wedge-shaped ring (213), the middle of the bottom of the piston plate (214) is provided with an upper wedge-shaped ring (220) which is matched with the lower wedge-shaped ring (213), the middle of the lower wedge-shaped ring (213) and the upper wedge-shaped ring (220) is of a hollow structure, the bottom of the inside of the lower wedge-shaped ring (213) is provided with a protection spring (224) which extends into the inside of the upper wedge-shaped ring (220), and the longitudinal height of the protection spring (224) is greater than the longitudinal height of the combined lower wedge-shaped ring (213) and upper wedge-shaped ring (220).

2. An oil-immersed transformer tank according to claim 1, characterized in that The input end of the oil pump (203) is provided with an oil inlet pipe (202) which is in communication with the inside of the transformer box (100), the output end of the oil pump (203) is provided with an oil outlet pipe (204), the output end of the oil outlet pipe (204) is in communication with the inside of the cooling bin body (201) and is provided with a guide oil pipe (216) which extends into the inside of the cooling bin body (201), the output end of the guide oil pipe (216) is provided with a guide port (219), and the output end of the cooling bin body (201) is provided with an oil return pipe (206) which is in communication with the inside of the transformer box (100).

3. An oil-immersed transformer tank according to claim 2, characterized in that The cooling assembly comprises a guide top plate (209) arranged on the top of the outside of the central shaft (217), the edge of the guide top plate (209) is fastened and sealingly connected to the inner wall of the cooling bin body (201), the guide top plate (209) is of a single-layer spiral slope structure, the output end of the guide port (219) corresponds to the top of the slope of the guide top plate (209), and a bearing seat is arranged between the middle of the guide top plate (209) and the outside of the central shaft (217).

4. An oil-immersed transformer tank according to claim 3, characterized in that The bottom of the flow guide top plate (209) is provided with a plurality of groups of spiral sleeve distributed heat pipes (210), the input end of the heat pipe (210) and the top of the flow guide top plate (209) are in communication with each other, and the input end of the heat pipe (210) corresponds to the bottom position of the slope of the flow guide top plate (209), the bottom of the heat pipe (210) is commonly provided with a flow guide bin (225), the bottom of the inner wall of the cooling bin body (201) is provided with a flow guide bottom plate (211), the flow guide bottom plate (211) is an annular circular plate structure, the inner side of the flow guide bottom plate (211) is provided with a support ring (218), the cooling oil discharged from the output end of the flow guide bin (225) falls into the area enclosed between the inner wall of the cooling bin body (201), the top of the flow guide bottom plate (211) and the outer side of the support ring (218).

5. An oil-immersed transformer tank according to claim 4, characterized in that The driving assembly includes an inner support ring (228) slidingly supported on the top of the support ring (218), the outer side of the center shaft (217) is tightly provided with a center bearing seat (226), the outer side of the center bearing seat (226) is uniformly provided with a plurality of groups of airflow impellers (227) tightly connected with the inner wall of the inner support ring (228), the outer side of the inner support ring (228) is uniformly provided with a plurality of groups of flow guide impellers (229), one end of the flow guide impeller (229) away from the inner support ring (228) is commonly provided with an outer support ring (222), and the outer side of the outer support ring (222) is rotationally attached to the inner wall of the cooling bin body (201).

6. An oil-immersed transformer tank according to claim 5, characterized in that The top of the inner support ring (228) and the outer support ring (222) on the side close to each other is provided with a lower groove, and the top of the two groups of lower grooves commonly supports a support top plate (223), the outer side of the support top plate (223) is tightly connected with the inner wall of the cooling bin body (201), the inner side of the support top plate (223) is provided with a flow guide ring cylinder (221), the flow guide ring cylinder (221) is sleeved on the outer side of the center shaft (217), and the flow guide ring cylinder (221) is sleeved in the innermost group of heat pipes (210).

7. An oil-immersed transformer tank according to claim 6, characterized in that The blade direction of the airflow impeller (227) and the flow guide impeller (229) is opposite, the rotation of the flow guide impeller (229) drives the rotation of the airflow impeller (227) to guide the external airflow into the inside of the flow guide ring cylinder (221), and the outer side of the flow guide ring cylinder (221) is uniformly provided with airflow through holes.

8. An oil-immersed transformer tank according to claim 7, characterized in that The outer side of the cooling bin body (201) is uniformly provided with heat dissipation through holes (205), the top of the outer side of the cooling bin body (201) is uniformly provided with a plurality of groups of exhaust through holes (208), the inside of the exhaust through hole (208) is communicated with the top area of the piston plate (214), and the inside of the heat dissipation through hole (205) is communicated with the position area of the heat pipe (210).

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