Shock absorption and noise reduction shell device of oil immersed transformer

Abstract

A shock absorption and noise reduction outer shell device of an oil immersed transformer relates to the field of oil immersed transformers and comprises an outer shell, a noise reduction mechanism used for shock absorption and noise reduction of a transformer iron core and a winding is arranged in the outer shell, the noise reduction mechanism comprises a shock pad and an inner shell, the inner shell is arranged in the outer shell, and the shock pad is arranged between the outer shell and the inner shell. The shock absorption and noise reduction shell device of the oil immersed transformer has the advantages that the transformer iron core and the shell are separated from each other through the shock absorption pad with the porous structure, on one hand, vibration generated by the iron core can be isolated, and on the other hand, the vibration of the iron core can be reduced; vibration energy is absorbed through the porous structure in the shock pad, in addition, pores in the shock pad can play a good heat dissipation role, air penetrates through the shock pad through the pushing effect of the air pump, good heat dissipation is carried out on the transformer iron core lamination, iron core thermal deformation is reduced, and vibration is further reduced.

Description

Technical Field

[0001] The invention relates to the field of oil-immersed transformers, and in particular to a vibration-damping and noise-reducing shell device for an oil-immersed transformer. Background Art

[0002] In today's power system, oil-immersed transformers are key equipment and play an important role in achieving efficient transmission of electric energy and voltage conversion to meet user needs. It has a long history of development. The early design was simple. Later, with the growth of power demand and technological progress, the performance and structure were gradually optimized. The oil-immersed design improves insulation performance and heat dissipation capacity. The working principle is based on the law of electromagnetic induction. The alternating current is passed through the primary coil to generate an alternating magnetic field, and the secondary coil induces the corresponding voltage to achieve voltage transformation. Oil is used as an insulating and cooling medium because transformer oil has good insulation, thermal conductivity and arc extinguishing properties. It can isolate live parts to prevent accidents, and can also take away heat to ensure that the transformer works within the normal temperature range and extend its service life.

[0003] However, traditional oil-immersed transformers also have some problems and challenges. For example, the transformer core will generate vibration and noise during the operation of the transformer oil, which is specifically manifested as: magnetostriction of the core: For example, when the core is overloaded, the alternating magnetic field will intensify, and periodic small expansion and contraction changes will occur. This magnetostriction phenomenon will cause the core to vibrate, thereby generating noise. In addition, the temperature of the transformer winding and core will rise under high load conditions, the core will soften at high temperatures, and the deformation between the core laminations will produce gaps, which will also aggravate the vibration of the core. On the one hand, these vibrations will cause a lot of noise, and on the other hand, long-term vibrations will cause wear between the core and the winding, which may easily cause problems such as loose core, winding short circuit, and winding leakage. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the present invention is to provide an oil-immersed transformer shock-absorbing and noise-reducing housing device, which isolates the winding core from the external transformer housing and reduces the temperature of the core, thereby reducing the noise generated by the core vibration.

[0006] To achieve the above-mentioned purpose, the present invention proposes a shock-absorbing and noise-reducing shell device for an oil-immersed transformer, comprising a shell, wherein a noise reduction mechanism for shock-absorbing and noise-reducing the transformer core and winding is arranged inside the shell, and the noise reduction mechanism comprises a shock-absorbing pad and an inner shell, wherein the inner shell is arranged inside the shell, the shock-absorbing pad is arranged between the outer shell and the inner shell, the interior of the shock-absorbing pad is a porous structure, an air duct is arranged between the outer shell and the inner shell, one end of the air duct is connected to an end face of the shock-absorbing pad, an air pump is arranged at the other end of the air duct, and an air outlet component is arranged at the air outlet end of the shock-absorbing pad.

[0007] Furthermore, the shock-absorbing pad is made of shock-absorbing silica gel or shock-absorbing foam, and a strip-shaped through hole is provided inside the shock-absorbing pad, one end of the through hole is connected to the airway, and the other end of the through hole is connected to the air outlet component.

[0008] Furthermore, a shell cover is provided on the top of the shell, a sound insulation pad is provided on the inner wall of the shell, and the outer wall of the shock-absorbing pad is in contact with the sound insulation pad.

[0009] Furthermore, the air outlet assembly includes an upper air outlet nozzle and a lower air outlet nozzle, wherein the upper air outlet nozzle and the lower air outlet nozzle are respectively arranged on the upper and lower sides of the shell, and the upper air outlet nozzle and the lower air outlet nozzle are both connected to the exhaust end of the shock absorbing pad.

[0010] Furthermore, a protective cover is arranged outside the upper air outlet nozzle, and a protective mesh cover is arranged at the air outlet end of the protective cover.

[0011] Furthermore, the inner shell is made of a metal material with high thermal conductivity, an oil chamber is opened inside the inner shell, an inner shell cover plate is arranged on the top of the inner shell, sealing grooves are arranged on the inner wall of the inner shell and the bottom of the inner shell cover plate, the sealing grooves are used to clamp the edge part of the iron core, and an exhaust valve is arranged on the inner shell cover plate.

[0012] Furthermore, an oil circulation component is arranged inside the shock-absorbing pad, and the oil circulation component includes a circulation pump and a serpentine tube, wherein the circulation pump is arranged at the bottom of the oil chamber, the oil inlet end of the serpentine tube is connected to the oil outlet end of the circulation pump, the serpentine tube runs through the inside of the air passage, and the oil outlet end of the oil outlet pipe is connected to the upper side of the oil chamber.

[0013] Furthermore, the oil inlet end of the circulation pump is provided with an oil inlet nozzle with an inverted cone structure, and a filter is provided on the oil inlet nozzle.

[0014] Furthermore, a shell cover is provided on the top of the shell, an oil tank is provided on the shell cover, an oil outlet pipe made of silicone material is provided at the bottom of the oil tank, the oil outlet pipe is connected to the shell, an oil level control component is provided at the bottom of the oil outlet pipe, the oil level control component includes an oil outlet nozzle and a float, an oil outlet nozzle is provided at the oil outlet end of the oil outlet pipe, a float is provided below the oil outlet nozzle, a guide rod is provided below the oil outlet nozzle, and the float is provided on the guide rod.

[0015] Beneficial effect: The present invention separates the transformer core and the shell through a shock-absorbing pad with a porous structure. On the one hand, it can isolate the vibration generated by the core, and the vibration energy is absorbed by the porous structure inside the shock-absorbing pad. On the other hand, the pores inside the shock-absorbing pad can play a good heat dissipation role. The air is pushed through the shock-absorbing pad by the air pump, which can effectively dissipate the heat of the transformer core laminations, reduce the thermal deformation of the core, and further reduce the vibration.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 It is a structural schematic diagram of a vibration-damping and noise-reducing housing device for an oil-immersed transformer according to one embodiment of the present invention; Figure 2 It is a front cross-sectional view of a vibration-damping and noise-reducing housing device for an oil-immersed transformer according to one embodiment of the present invention; Figure 3 for Figure 2 A magnified view of middle; Figure 4 for Figure 2 Enlarged view of middle B; Figure 5 The figure is a left side cross-sectional view of a vibration-damping and noise-reducing housing device for an oil-immersed transformer according to one embodiment of the present invention.

[0018] As shown in the figure: 1. Shell; 2. Shell cover; 3. Oil tank; 31. Oil outlet pipe; 32. Oil level control assembly; 321. Oil nozzle joint; 322. Oil outlet nozzle; 323. Float; 324. Guide rod; 4. Noise reduction mechanism; 41. Air outlet assembly; 411. Protective mesh cover; 412. Upper air outlet nozzle; 413. Lower air outlet nozzle; 414. Protective cover; 42. Air pump; 43. Air duct; 44. Shock pad; 441. Through hole; 45. Serpentine pipe; 46. Oil circulation assembly; 461. Circulation pump; 462. Oil inlet nozzle; 47. Sound insulation pad; 5. Inner shell; 51. Inner shell cover; 511. Exhaust valve; 512. Sealing partition; 6. Iron core; 7. Winding; 8. Oil chamber. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The vibration and noise reduction housing device for an oil-immersed transformer according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0021] like Figure 1 , Figure 2 As shown, the shock-absorbing and noise-reducing housing device for an oil-immersed transformer provided in an embodiment of the present invention comprises a housing 1, a noise reduction mechanism 4 for shock-absorbing and noise-reducing a transformer core 6 and a winding 7 is arranged inside the housing 1, the noise reduction mechanism 4 comprises a shock-absorbing pad 44 and an inner housing 5, wherein the inner housing 5 is arranged inside the housing 1, the shock-absorbing pad 44 is arranged between the housing 1 and the inner housing 5, the interior of the shock-absorbing pad 44 is a porous structure, an air duct 43 is arranged between the housing 1 and the inner housing 5, one end of the air duct 43 is connected to an end face of the shock-absorbing pad 44, an air pump 42 is arranged at the other end of the air duct 43, and an air outlet component 41 is arranged at the air outlet end of the shock-absorbing pad 44.

[0022] Specifically, when the oil-immersed transformer shock-absorbing and noise-reducing housing device of the present application is in use, when the iron core 6 and winding 7 inside the transformer work, the iron core 6 magnetostriction generates vibration, and at this time, the vibration of the iron core 6 will first be transmitted to the inner shell 5, and the inner shell 5 will continue to transmit the vibration to the shock-absorbing pad 44 after vibration, and the internal porous structure of the shock-absorbing pad 44 absorbs the vibration potential energy. At the same time, the heat in the transformer iron core 6 and winding 7 is transferred to the transformer oil in the inner shell 5, and then the transformer oil transfers the heat to the inner shell 5, and the air pump 42 works to inhale the external cold air and transfer it to the shock-absorbing pad 44 through the air duct 43. In this process, the air in the air duct 43 carries the heat generated by the inner shell 5. After the air passes through the shock-absorbing pad 44, the air carries the heat in the shock-absorbing pad 44 and is discharged together, cooling the transformer and the iron core 6, reducing the thermal deformation of the iron core 6, and further reducing the vibration.

[0023] In one embodiment of the present invention, Figure 2-Figure 5 As shown, the shock absorbing pad 44 is made of shock absorbing silicone or shock absorbing foam material, and a strip-shaped through hole 441 is opened inside the shock absorbing pad 44. One end of the through hole 441 is connected to the air duct 43, and the other end of the through hole 441 is connected to the air outlet component 41. The inner shell 5 is made of metal with high thermal conductivity.

[0024] Specifically, since the shock-absorbing pad 44 is wrapped around the outside of the inner shell 5, the vibration generated by the transformer inside the inner shell 5 is transmitted to the shock-absorbing pad 44 and absorbed by it. At the same time, the heat generated by the transformer core 6 and the winding 7 inside the inner shell 5 is transmitted to the inner shell 5 through the transformer oil. The inner shell 5 transfers the heat to the shock-absorbing pad 44, and the airflow transfers the hot gas inside the shock-absorbing pad 44, so that the transformer inner shell 5 is cooled, and then the transformer core 6 and the winding 7 inside the inner shell 5 are cooled.

[0025] In one embodiment of the present invention, Figure 2 and Figure 4As shown, a shell cover plate 2 is provided on the top of the shell 1 to facilitate opening of the shell 1 , a sound insulation pad 47 is provided on the inner wall of the shell 1 , and the outer wall of the shock-absorbing pad 44 is in contact with the sound insulation pad 47 .

[0026] Specifically, excess vibration not absorbed by the shock-absorbing pad 44 is transmitted to the sound insulation pad 47, and the noise generated by the transformer inside the inner shell 5 and the noise generated by the airflow are all handled by the sound insulation pad 47, so that the noise generated by the transformer is completely wrapped and absorbed, reducing the transmission of noise to the outside.

[0027] In one embodiment of the present invention, Figure 2 As shown, the air outlet assembly 41 includes an upper air outlet nozzle 412 and a lower air outlet nozzle 413, wherein the upper air outlet nozzle 412 and the lower air outlet nozzle 413 are respectively arranged on the upper and lower sides of the housing 1, and the upper air outlet nozzle 412 and the lower air outlet nozzle 413 are both connected to the exhaust end of the shock-absorbing pad 44. A protective cover 414 is arranged outside the upper air outlet nozzle 412, and a protective mesh cover 411 is arranged at the air outlet end of the protective cover 414 to protect the upper air outlet nozzle 412 and prevent rainwater from entering.

[0028] Specifically, when the inner shell 5 is cooled by air flow, the air flow is transmitted up and down through the air duct 43, the upper air flow is discharged through the upper air outlet nozzle 412, and the lower air flow is discharged from the lower air outlet nozzle 413. The air flow can flow completely along the outside of the inner shell 5, wrapping the inner shell 5 in all directions, thereby accelerating the heat transfer of the inner shell 5.

[0029] In one embodiment of the present invention, Figure 2-Figure 4 As shown, the inner shell 5 is made of a metal material with high thermal conductivity, an oil chamber 8 is opened inside the inner shell 5, an inner shell cover plate 51 is arranged on the top of the inner shell 5, and a sealing groove 512 is arranged on the inner wall of the inner shell 5 and the bottom of the inner shell cover plate 51, and the sealing groove 512 is used to clamp the edge part of the iron core 6. An exhaust valve 511 is arranged on the inner shell cover plate 51, and when the internal air pressure of the inner shell 5 increases, the internal gas is discharged in time to prevent the inner shell 5 from being squeezed and deformed.

[0030] An oil circulation assembly 46 is arranged inside the shock-absorbing pad 44, and the oil circulation assembly 46 includes a circulation pump 461 and a serpentine tube 45, wherein the circulation pump 461 is arranged at the bottom of the oil chamber 8, the oil inlet end of the serpentine tube 45 is connected to the oil outlet end of the circulation pump 461, the serpentine tube 45 runs through the inside of the air channel 43, and the oil outlet end of the oil outlet pipe 31 is connected to the upper side of the oil chamber 8.

[0031] Specifically, in order to allow the transformer oil in the inner shell 5 to fully exchange heat with the external airflow, the transformer oil in the inner shell 5 is transferred to the serpentine tube 45 through the circulating pump 461. The serpentine tube 45 exchanges heat with the airflow flowing in the airway 43, so that the serpentine tube 45 is quickly cooled down. The transformer oil in the serpentine tube 45 then flows back to the inner shell 5, so that the transformer oil inside the inner shell 5 is quickly cooled down, thereby reducing the thermal deformation of the iron core 6.

[0032] In one embodiment of the present invention, Figure 4 As shown, the oil inlet end of the circulation pump 461 is provided with an oil inlet nozzle 462 with an inverted cone structure, and a filter is provided on the oil inlet nozzle 462. As the oil flows at the oil inlet nozzle 462, the stains on the inverted cone structure of the oil inlet nozzle 462 flow downward along the cone-shaped oil inlet nozzle 462, reducing the residue of stains on the filter.

[0033] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, a shell cover plate is provided on the top of the shell 1, an oil tank 3 is provided on the cover plate of the shell 1, an oil outlet pipe 31 made of silicone material is provided at the bottom of the oil tank 3, the oil outlet pipe 31 is connected to the shell 1, an oil level control component 32 is provided at the bottom of the oil outlet pipe 31, an oil outlet nozzle 322 is provided at the oil outlet end of the oil outlet pipe 31, a float 323 is provided below the oil outlet nozzle 322, a guide rod 324 is provided below the oil outlet nozzle 322, and the float 323 is provided on the guide rod 324.

[0034] Specifically, the transformer oil in the inner shell 5 is injected through the oil tank 3, and the oil tank 3 sends the transformer oil to the oil nozzle joint 321 through the oil outlet pipe 31 at the bottom, and then transmits the transformer oil to the oil outlet nozzle 322 for discharge through the oil nozzle joint 321. When the transformer oil inside the inner shell 5 reaches the highest position, the float 323 rises to the highest point and blocks the oil outlet nozzle 322 due to the buoyancy. When the transformer oil level inside the inner shell 5 drops, the position of the float 323 drops, and the oil outlet nozzle 322 is opened again to inject oil, so that the transformer oil inside the inner shell 5 is always in the predetermined position.

[0035] In order to clearly explain the above embodiments, refer to Figure 1-Figure 5 The specific working principle of the oil-immersed transformer shock-absorbing and noise-reducing housing device of the present invention is as follows: when in use, first open the cover plate of the outer shell 1, open the cover plate 51 of the inner shell, install the transformer core 6 and the winding 7 inside the inner shell 5, and then cover the cover plate of the outer shell 1 and the cover plate 51 of the inner shell. The transformer oil in the inner shell 5 is injected through the oil tank 3, and the oil tank 3 sends the transformer oil to the oil nozzle joint 321 through the oil outlet pipe 31 at the bottom, and then the transformer oil is transmitted to the oil outlet nozzle 322 through the oil nozzle joint 321 and discharged into the inner shell 5. When the transformer oil inside the inner shell 5 reaches the highest position, the float 323 rises to the highest point at this time, and the oil outlet nozzle 322 is blocked by the buoyancy, and the oil injection stops.

[0036] When the iron core 6 and winding 7 inside the transformer are working, the iron core 6 magnetostricts and vibrates. At this time, the vibration of the iron core 6 will first be transmitted to the inner shell 5. After the inner shell 5 vibrates, the vibration will continue to be transmitted to the shock-absorbing pad 44. Since the shock-absorbing pad 44 is wrapped on the outside of the inner shell 5, the vibration generated by the transformer inside the inner shell 5 is transmitted to the shock-absorbing pad 44 and absorbed by it. The excess vibration not absorbed by the shock-absorbing pad 44 is transmitted to the sound insulation pad 47. The noise generated by the transformer inside the inner shell 5 and the noise generated by the airflow are all handled by the sound insulation pad 47, so that the noise generated by the transformer is completely wrapped and absorbed, thereby reducing the transmission of noise to the outside.

[0037] At the same time, the heat generated by the transformer core 6 and the winding 7 inside the inner shell 5 is transferred to the inner shell 5 through the transformer oil, and the inner shell 5 transfers the heat to the shock-absorbing pad 44. The transformer oil in the inner shell 5 is transmitted to the serpentine tube 45 through the circulating pump 461. The air pump 42 works to inhale external cold air, and the cold air passes through the air duct 43. The serpentine tube 45 and the air flow flowing in the air duct 43 exchange heat with each other, so that the serpentine tube 45 is quickly cooled down. The transformer oil in the serpentine tube 45 then flows back to the inner shell 5, so that the transformer oil inside the inner shell 5 is quickly cooled down, reducing the thermal deformation of the core 6, and thereby reducing the vibration of the core 6.

[0038] When the inner shell 5 is cooled by air flow, the air flow is transmitted up and down through the air duct 43, the air flow on the upper side is discharged through the upper air outlet nozzle 412, and the air flow on the lower side is discharged from the lower air outlet nozzle 413. The air flow can flow along the outside of the inner shell 5 in an all-round way, wrapping the inner shell 5 in all directions, accelerating the heat transfer of the inner shell 5, and the air flow transfers the hot gas inside the shock-absorbing pad 44 to cool down the transformer inner shell 5, and then cool down the transformer core 6 and winding 7 inside the inner shell 5. The air carries the heat in the shock-absorbing pad 44 and discharges it together, cooling the transformer and the core 6, reducing the thermal deformation of the core 6, and further reducing the vibration.

[0039] In summary, the oil-immersed transformer shock-absorbing and noise-reducing housing device of the embodiment of the present invention separates the transformer core and the housing through a shock-absorbing pad with a porous structure. On the one hand, the vibration generated by the core can be isolated, and the vibration energy is absorbed by the porous structure inside the shock-absorbing pad. On the other hand, the pores inside the shock-absorbing pad can play a good heat dissipation role. The air is pushed through the shock-absorbing pad by the pushing action of the air pump, which can effectively dissipate the heat of the transformer core laminations, reduce the thermal deformation of the core, and further reduce the vibration.

[0040] The present invention transmits the excess vibration not absorbed by the shock-absorbing pad to the sound insulation pad, and the noise generated by the transformer inside the inner shell and the noise generated by the airflow are all handled through the sound insulation pad, so that the noise generated by the transformer is completely wrapped and absorbed, reducing the transmission of noise to the outside.

[0041] The present invention transmits the transformer oil in the inner shell to the serpentine tube through a circulating pump, and the serpentine tube and the airflow flowing in the airway exchange heat with each other, so that the serpentine tube is quickly cooled down, and the transformer oil in the serpentine tube then flows back to the inner shell. When the inner shell is cooled by the airflow, the airflow is transmitted up and down through the airway, the airflow on the upper side is discharged through the upper air outlet nozzle, and the airflow on the lower side is discharged from the lower air outlet nozzle. The airflow can flow completely along the outside of the inner shell, wrap the inner shell in all directions, accelerate the transfer of heat from the inner shell, quickly cool down the transformer oil inside the inner shell, and reduce thermal deformation of the iron core.

[0042] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A shock-absorbing and noise-reducing housing device for an oil-immersed transformer, characterized in that: It comprises a housing (1), wherein a noise reduction mechanism (4) for reducing vibration and noise of a transformer core (6) and a winding (7) is arranged inside the housing (1); The noise reduction mechanism (4) comprises a shock-absorbing pad (44) and an inner shell (5), wherein the inner shell (5) is arranged inside the outer shell (1), the shock-absorbing pad (44) is arranged between the outer shell (1) and the inner shell (5), the interior of the shock-absorbing pad (44) is a porous structure, an air channel (43) is arranged between the outer shell (1) and the inner shell (5), one end of the air channel (43) is in communication with an end face of the shock-absorbing pad (44), the other end of the air channel (43) is provided with an air pump (42), and the air outlet end of the shock-absorbing pad (44) is provided with an air outlet assembly (41).

2. The vibration and noise reduction housing device for oil-immersed transformer according to claim 1 is characterized in that: The shock absorbing pad (44) is made of shock absorbing silica gel or shock absorbing foam material, and a strip-shaped through hole (441) is provided inside the shock absorbing pad (44), one end of the through hole (441) is connected to the air passage (43), and the other end of the through hole (441) is connected to the air outlet assembly (41).

3. The vibration and noise reduction housing device for oil-immersed transformer according to claim 2 is characterized in that: A shell cover plate (2) is provided on the top of the shell (1), a sound insulation pad (47) is provided on the inner wall of the shell (1), and the outer wall of the shock-absorbing pad (44) is in contact with the sound insulation pad (47).

4. The vibration and noise reduction housing device for oil-immersed transformer according to claim 1 is characterized in that: The air outlet assembly (41) comprises an upper air outlet nozzle (412) and a lower air outlet nozzle (413), wherein the upper air outlet nozzle (412) and the lower air outlet nozzle (413) are respectively arranged on the upper and lower sides of the housing (1), and the upper air outlet nozzle (412) and the lower air outlet nozzle (413) are both connected to the exhaust end of the shock-absorbing pad (44).

5. The vibration and noise reduction housing device for oil-immersed transformer according to claim 4 is characterized in that: A protective cover (414) is provided outside the upper air outlet nozzle (412), and a protective mesh cover (411) is provided at the air outlet end of the protective cover (414).

6. The vibration and noise reduction housing device for oil-immersed transformer according to claim 1 is characterized in that: The inner shell (5) is made of a metal material with high thermal conductivity. An oil chamber (8) is provided inside the inner shell (5). An inner shell cover plate (51) is provided on the top of the inner shell (5). A sealing groove (512) is provided on the inner wall of the inner shell (5) and the bottom of the inner shell cover plate (51). The sealing groove (512) is used to clamp the edge of the iron core (6). An exhaust valve (511) is provided on the inner shell cover plate (51).

7. The vibration and noise reduction housing device for oil-immersed transformer according to claim 1 is characterized in that: An oil circulation assembly (46) is arranged inside the shock-absorbing pad (44), and the oil circulation assembly (46) comprises a circulation pump (461) and a serpentine tube (45), wherein the circulation pump (461) is arranged at the bottom of the oil chamber (8), the oil inlet end of the serpentine tube (45) is connected to the oil outlet end of the circulation pump (461), the serpentine tube (45) runs through the inside of the air passage (43), and the oil outlet end of the oil outlet pipe (31) is connected to the upper side of the oil chamber (8).

8. The vibration and noise reduction housing device for oil-immersed transformer according to claim 7 is characterized in that: The oil inlet end of the circulation pump (461) is provided with an oil inlet nozzle (462) with an inverted cone structure, and a filter is provided on the oil inlet nozzle (462).

9. The vibration and noise reduction housing device for oil-immersed transformer according to claim 1, characterized in that: The top of the housing (1) is provided with a housing (1) cover plate, the housing (1) cover plate is provided with an oil tank (3), the bottom of the oil tank (3) is provided with an oil outlet pipe (31) made of silicone material, the oil outlet pipe (31) is communicated with the housing (1), the bottom of the oil outlet pipe (31) is provided with an oil level control component (32), the oil level control component (32) comprises an oil outlet nozzle (322) and a float (323), the oil outlet end of the oil outlet pipe (31) is provided with an oil outlet nozzle (322), a float (323) is provided below the oil outlet nozzle (322), a guide rod (324) is provided below the oil outlet nozzle (322), and the float (323) is provided on the guide rod (324).

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