An overload resistant power transformer

Abstract

The present invention relates to the technical field of transformers, and discloses an overload-resistant power transformer, including a transformer body, three groups of insulating shells are arranged on the outside of the transformer body, two groups of bases are fixedly arranged at the lower end of the transformer body, two groups of fans are fixedly arranged on the two groups of bases, the inner sides of the three groups of insulating shells are all provided with cooling components, the outer sides of the three groups of insulating shells are all provided with heat-absorbing components, the cooling components include a water tank ring arranged on the inner side of the insulating shell, and a plurality of fixed blocks are fixedly arranged between the lower side of the water tank ring and the inner wall of the insulating shell. The overload-resistant power transformer described in the present invention, through the overall coordinated use, absorbs heat from the cooling of the inner circulation of the water tank ring and discharges it to the outside, and at the same time cooperates with the airflow blown out by the lower fan to achieve the purpose of cooling it, so as to avoid the internal circulating coolant from being easily overheated and affecting the heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an overload-resistant power transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. The existing transformer heat dissipation methods are mainly air cooling and water cooling. Air cooling uses a fan-blown transformer installed on the lower side of the transformer to achieve the purpose of cooling, while water cooling is mostly a water pipe spirally wound around the outer periphery of the transformer body, using water to circulate in the water pipe to achieve the purpose of cooling the transformer. However, in the event of overload, the air cooling is unevenly distributed, the coolant absorbs more and more heat, and the coolant temperature becomes hotter and hotter. The optimization of liquid cooling is poor, resulting in unstable overload operation of the entire transformer. Summary of the invention

[0003] The main purpose of the present invention is to provide an overload resistant power transformer, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] An overload-resistant power transformer comprises a transformer body, three groups of insulating shells are arranged on the outside of the transformer body, two groups of bases are fixedly arranged at the lower end of the transformer body, two groups of fans are fixedly arranged on the two groups of bases, the inner sides of the three groups of insulating shells are all provided with cooling components, the outer sides of the three groups of insulating shells are all provided with heat absorption components, the cooling components comprise a water tank ring arranged on the inner side of the insulating shell, a plurality of fixed blocks are fixedly arranged between the lower side of the water tank ring and the inner wall of the insulating shell, a telescopic shell is slidably arranged on the inner side of the water tank ring, a guide spiral sheet is fixedly arranged on the inner side of the telescopic shell, a plurality of heat sinks are fixedly arranged on the outer side of the water tank ring, and a heat sink is fixedly arranged on the rear side of the water tank ring. A shunt pipe, an electric control valve is fixedly installed on the lower side of the shunt pipe, a lower water pipe is fixedly arranged near the middle position on the rear side of the three groups of shunt pipes, four groups of support blocks are fixedly arranged on the upper end of the telescopic shell, and elastic spiral sheets are fixedly arranged on the upper ends of the four groups of support blocks. Four groups of connecting blocks are fixedly arranged between the upper side of the elastic spiral sheets and the upper inner wall of the insulating shell, and heat absorption pipes are spirally fixed on the elastic spiral sheets. Upper water pipes are fixedly arranged on the upper side of the three groups of heat absorption pipes near the rear position, a water pump is fixedly arranged near the middle position on the rear side of one of the two groups of bases, a water pump is fixedly arranged between the water pumping end of the water pump and the upper water pipe, and a water outlet pipe is fixedly arranged between the water outlet end of the water pump and the lower water pipe.

[0006] Preferably, a plurality of groups of air outlets are provided on the upper side of the insulating shell, a guide sleeve is fixedly provided on the upper end of the insulating shell near the outer side of the air outlet, an annular groove is provided on the outer side of the insulating shell near the inner position of the guide sleeve, a rotating ring is rotatably provided on the inner side of the annular groove, a plurality of groups of fan blades are fixedly provided on the outer side of the rotating ring, and a plurality of groups of conical rings are fixedly provided on the inner wall of the insulating shell.

[0007] Preferably, the heat absorption component includes a water storage shell fixedly arranged on the outer side of the insulating shell near the upper position, a plurality of groups of telescopic rods are movably arranged on the inner side of the water storage shell, a circular ring is fixedly arranged on the outer side of the telescopic rod, a spring is fixedly arranged between the circular ring on the outer side of the telescopic rod and the water storage shell, a plurality of groups of push rings are fixedly arranged on the lower ends of the telescopic rods, a plurality of groups of nozzles are fixedly arranged on the lower end of the water storage shell, a sealing rubber sheet is fixedly arranged on the outer side of the nozzle, and an airflow sheet is fixedly arranged on the outer side of the insulating shell near the lower position.

[0008] Preferably, the interior of the water tank ring is provided with coolant, several groups of the fixing blocks are evenly arranged in a circular shape, the telescopic shell is sealed and fitted with the water tank ring, and several groups of the heat sinks are inclinedly arranged.

[0009] Preferably, the diversion pipe is connected to the upper and lower sides of the water tank ring respectively, the lower water pipe and the upper water pipe pass through the inner side of the insulating shell, the heat absorption pipe is a stainless steel corrugated pipe, the lower side of the heat absorption pipe is fixedly connected to the telescopic shell, and the water pump is provided with an external coolant replenishing pipe.

[0010] Preferably, the guide sleeves are outside several groups of air outlets, several groups of fan blades are evenly distributed in a circular shape outside the rotating ring, and several groups of fan blades and several groups of conical rings are all inclined.

[0011] Preferably, the inner side of the water storage shell is set to distilled water, the water storage shell is communicated with the inner sides of several groups of nozzles, the upper end of the telescopic rod is an arc surface, and the telescopic rod corresponds to between two adjacent groups of wind blades.

[0012] Preferably, the nozzle is arranged obliquely toward the surface of the insulating shell, and the sealing rubber sealing plug is in the nozzle and has a cross opening.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The coolant replenishing pipe on the water extraction pipe is connected to the external coolant equipment. When in use, the front and rear fans are blown upward to dissipate heat for the transformer body. If the current pressure of the transformer body is too large, the outlet pipe can be used to extract the coolant from the water extraction pipe, the three groups of upper water pipes, and the heat absorption pipe, and then the coolant is discharged into the inner side of the water tank ring through the outlet pipe, the three groups of lower water pipes, and the diversion pipe, so as to realize the circulation of the coolant in the three groups of heat absorption pipes, further realize the effect of heat absorption and cooling, and improve the internal working environment.

[0015] 2. When an overload occurs, a lot of coolant is drawn into the inner side of the water tank ring through the coolant replenishing pipe, and the electric control valve is closed at this time, so that the water tank ring and the lower side of the shunt pipe are connected and no water can flow out. The coolant inside the water tank ring will become more and more, thereby pushing the telescopic shell upwards and squeezing the elastic spiral sheet, so that each adjacent circle of the heat absorption tube is close to each other, and the telescopic shell extends out from the water tank ring, shortening the distance and wrapping more closely to increase the heat absorption area. According to the actual situation, corresponding changes are made to better deal with the situation under different temperatures, and the use of several groups of heat sinks, the cooling of the inner circulation of the water tank ring is absorbed and discharged to the outside, and the airflow blown out by the lower fan is used to achieve the purpose of cooling it, so as to avoid the internal circulating coolant from overheating and affecting the heat dissipation effect.

[0016] 3. Several groups of heat sinks and conical rings guide the incoming airflow, spiral up to discharge the internal hot air, accelerate the internal heat transfer and diffusion, and the guide sleeve will discharge the airflow downward to avoid blowing directly onto the transformer main core, while driving several groups of fan blades and rotating rings to rotate along the annular groove to drive the heat absorption component on the lower side to work.

[0017] 4. When several groups of fan blades rotate, they will push several groups of telescopic rods to move downward, squeezing the spring, and the pushed push ring squeezes the distilled water inside the water storage shell. A small amount of distilled water is sprayed from several groups of nozzles to the surface of the transformer body through the sealing film. Distilled water has the property of being non-conductive, so the distilled water sprayed to the surface of the insulating shell absorbs heat, further improving the high-temperature internal environment, avoiding overheating and overloading of the transformer as a whole during use, and improving the overall overload resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an overload-resistant power transformer of the present invention;

[0019] Figure 2 It is a schematic diagram of the rear structure of an overload-resistant power transformer of the present invention;

[0020] Figure 3 This is a schematic diagram of the inner structure of an insulating housing of an overload-resistant power transformer of the present invention;

[0021] Figure 4 A partial cross-sectional structure diagram of a cooling component of an overload-resistant power transformer according to the present invention Figure 1 ;

[0022] Figure 5 It is a partial cutaway rear structural schematic diagram of a cooling component of an overload-resistant power transformer of the present invention;

[0023] Figure 6 A partial cross-sectional structure diagram of a cooling component of an overload-resistant power transformer according to the present invention Figure 2 ;

[0024] Figure 7 A partial cross-sectional structure diagram of a cooling component of an overload-resistant power transformer according to the present invention Figure 3 ;

[0025] Figure 8 This is a schematic diagram of the internal structure of an insulating housing of an overload-resistant power transformer of the present invention;

[0026] Fig. 9 The present invention is an overload resistant power transformer Figure 8 A schematic diagram of the enlarged structure of the middle part A;

[0027] Fig.10 The present invention is a schematic diagram of the partial structure of a heat absorption component of an overload resistant power transformer.

[0028] In the figure: 1. transformer body; 2. insulating shell; 3. base; 4. fan; 5. cooling component; 51. water tank ring; 52. fixing block; 53. telescopic shell; 54. guide spiral sheet; 55. heat sink; 56. shunt pipe; 57. electric control valve; 58. lower water pipe; 59. support block; 510. elastic spiral sheet; 511. connecting block; 512. heat absorption pipe; 513. upper water pipe; 514. water pump; 515. water pump; 516. water outlet pipe; 517. air outlet; 518. guide sleeve; 519. annular groove; 520. rotating ring; 521. fan blade; 522. conical ring; 6. heat absorption component; 61. water storage shell; 62. telescopic rod; 63. circular ring; 64. spring; 65. push ring; 66. nozzle; 67. sealing film; 68. air flow sheet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] See also Figure 1-Figure 10 An embodiment of the present invention is as follows: an overload-resistant power transformer comprises a transformer body 1, three groups of insulating shells 2 are arranged on the outside of the transformer body 1, two groups of bases 3 are fixedly arranged at the lower end of the transformer body 1, two groups of fans 4 are fixedly arranged on the two groups of bases 3, cooling components 5 are arranged on the inner sides of the three groups of insulating shells 2, and heat absorption components 6 are arranged on the outer sides of the three groups of insulating shells 2. The cooling component 5 comprises a water tank ring 51 arranged on the inner side of the insulating shell 2, a plurality of fixed blocks 52 are fixedly arranged between the lower side of the water tank ring 51 and the inner wall of the insulating shell 2, a telescopic shell 53 is slidably arranged on the inner side of the water tank ring 51, a guide spiral sheet 54 is fixedly arranged on the inner side of the telescopic shell 53, a plurality of heat sinks 55 are fixedly arranged on the outer side of the water tank ring 51, a shunt pipe 56 is fixedly arranged on the rear side of the water tank ring 51, and a shunt pipe 56 is fixedly arranged on the rear side of the water tank ring 51. An electric control valve 57 is fixedly installed on the lower side of the flow pipe 56, a lower water pipe 58 is fixedly arranged near the middle position on the rear side of the three groups of flow pipes 56, four groups of support blocks 59 are fixedly arranged on the upper end of the telescopic shell 53, and elastic spiral sheets 510 are fixedly arranged on the upper ends of the four groups of support blocks 59. Four groups of connecting blocks 511 are fixedly arranged between the upper side of the elastic spiral sheets 510 and the upper inner wall of the insulating shell 2, and a heat absorption pipe 512 is spirally fixed on the elastic spiral sheets 510. An upper water pipe 513 is fixedly arranged on the upper side of the three groups of heat absorption pipes 512 near the rear position, a water pump 514 is fixedly arranged on the rear side of one of the two groups of bases 3 near the middle position, a water suction pipe 515 is fixedly arranged between the water pumping end of the water pump 514 and the upper water pipe 513, and a water outlet pipe 516 is fixedly arranged between the water outlet end of the water pump 514 and the lower water pipe 58.

[0032] The interior of the water tank ring 51 is configured with coolant, several groups of fixed blocks 52 are evenly arranged in a circle, the telescopic shell 53 is sealed and fitted with the water tank ring 51, several groups of heat sinks 55 are inclined, the shunt pipe 56 is respectively connected to the upper and lower sides of the water tank ring 51, the lower water pipe 58 and the upper water pipe 513 pass through the inner side of the insulating shell 2, the heat absorption pipe 512 is a stainless steel corrugated pipe, the lower side of the heat absorption pipe 512 is fixedly connected to the telescopic shell 53, and an external coolant replenishing pipe is provided on the water pumping pipe 515.

[0033] The coolant replenishing pipe on the water pumping pipe 515 is connected to the external coolant equipment. When in use, the front and rear side fans 4 are blown upward to dissipate heat for the transformer body 1. If the current pressure of the transformer body 1 is too large, the coolant in the water pumping pipe 515, the three groups of upper water pipes 513, and the heat absorption pipe 512 can be extracted through the use of the water outlet pipe 516, and then discharged into the inner side of the water tank ring 51 through the water outlet pipe 516, the three groups of lower water pipes 58, and the shunt pipe 56, so as to realize the circulation of the coolant in the three groups of heat absorption pipes 512, further realize the effect of heat absorption and cooling, and improve the internal working environment. When an overload occurs, a lot of coolant is extracted into the inner side of the water tank ring 51 through the coolant replenishing pipe, and the electric The control valve 57 prevents water from flowing out of the position where the water tank ring 51 is connected to the lower side of the diverter pipe 56, and the coolant inside the water tank ring 51 will become more and more, thereby pushing up the telescopic shell 53 and squeezing the elastic spiral sheet 510, so that each adjacent circle of the heat absorption tube 512 is close to each other, and the telescopic shell 53 extends out from the water tank ring 51, shortening the distance and wrapping more closely and with a larger heat absorption area. Corresponding changes are made according to actual conditions to better cope with situations at different temperatures, and the use of several groups of heat sinks 55 can absorb heat from the cooling of the inner circulation of the water tank ring 51 and discharge it to the outside, and at the same time cooperate with the airflow blown out by the lower side fan 4 to achieve the purpose of cooling it, so as to avoid overheating of the coolant circulating inside and affect the heat dissipation effect.

[0034] A plurality of groups of air outlets 517 are provided on the upper side of the insulating shell 2, a guide sleeve 518 is fixedly provided on the upper end of the insulating shell 2 near the outer side of the air outlet 517, an annular groove 519 is provided on the outer side of the insulating shell 2 near the inner position of the guide sleeve 518, a rotating ring 520 is rotatably provided on the inner side of the annular groove 519, a plurality of groups of fan blades 521 are fixedly provided on the outer side of the rotating ring 520, and a plurality of groups of conical rings 522 are fixedly provided on the inner wall of the insulating shell 2.

[0035] The guide sleeves 518 cover the outside of the plurality of groups of air outlets 517 , and the plurality of groups of fan blades 521 are evenly distributed in a circular shape on the outside of the rotating ring 520 . The plurality of groups of fan blades 521 and the plurality of groups of conical rings 522 are all arranged in an inclined manner.

[0036] Several groups of heat sinks 55 and conical rings 522 guide the incoming airflow, spirally ascend to discharge the internal hot air, and accelerate the internal heat transfer and diffusion. The guide sleeve 518 discharges the airflow downward to avoid blowing directly onto the iron core of the transformer body 1, and at the same time drives several groups of fan blades 521 and rotating rings 520 to rotate along the annular groove 519 to drive the lower side heat absorption component 6 to work.

[0037] The heat absorption component 6 includes a water storage shell 61 fixedly arranged on the outer side of the insulating shell 2 near the upper position, a plurality of groups of telescopic rods 62 are movably arranged on the inner side of the water storage shell 61, a circular ring 63 is fixedly arranged on the outer side of the telescopic rod 62, a spring 64 is fixedly arranged between the circular ring 63 on the outer side of the telescopic rod 62 and the water storage shell 61, a push ring 65 is fixedly arranged on the lower end of the plurality of groups of telescopic rods 62, a plurality of groups of nozzles 66 are fixedly arranged on the lower end of the water storage shell 61, a sealing rubber sheet 67 is fixedly arranged on the outer side of the nozzle 66, and an airflow sheet 68 is fixedly arranged on the outer side of the insulating shell 2 near the lower position.

[0038] The inner side of the water storage shell 61 is set to distilled water, and the water storage shell 61 is connected to the inner side of several groups of nozzles 66. The upper end of the telescopic rod 62 is an arc surface, and the telescopic rod 62 corresponds to between two adjacent groups of wind blades 521. The nozzle 66 is inclined to the surface of the insulating shell 2, and the sealing rubber piece 67 is sealed in the nozzle 66 and has a cross opening.

[0039] When several groups of fan blades 521 rotate, they will push several groups of telescopic rods 62 to move downward, squeezing the spring 64, and the pushed push ring 65 squeezes the distilled water inside the water storage shell 61. A small amount of distilled water is sprayed from several groups of nozzles 66 to the surface of the transformer body 1 through the sealing film 67. Distilled water has the property of being non-conductive, so the distilled water sprayed to the surface of the insulating shell 2 absorbs heat, further improving the high-temperature internal environment, avoiding overheating and overloading of the transformer as a whole during use, and improving the overall overload resistance.

[0040] Working principle: First, the coolant replenishing pipe on the water pumping pipe 515 is connected to the external coolant equipment. When in use, the front and rear side fans 4 are blown upward to dissipate heat for the transformer body 1. If the current pressure of the transformer body 1 is too large, the coolant in the water pumping pipe 515, the three groups of upper water pipes 513, and the heat absorption pipe 512 can be extracted through the use of the water outlet pipe 516, and then discharged into the inner side of the water tank ring 51 through the water outlet pipe 516, the three groups of lower water pipes 58, and the diversion pipe 56, so as to realize the circulation of the coolant in the three groups of heat absorption pipes 512, further realize the effect of heat absorption and cooling, and improve the internal work In an environment where there is an overload, a lot of coolant is drawn into the inner side of the water tank ring 51 through the coolant replenishing pipe, and at this time, the electric control valve 57 is closed, so that the position where the water tank ring 51 is connected to the lower side of the shunt pipe 56 cannot discharge water, and the coolant inside the water tank ring 51 will become more and more, thereby pushing up the telescopic shell 53, squeezing the elastic spiral sheet 510, so that each adjacent circle of the heat absorption tube 512 is close to each other, and the telescopic shell 53 extends from the water tank ring 51, shortening the distance and wrapping more closely to increase the heat absorption area, making corresponding changes according to the actual situation, and better facing different temperatures. The situation, and the use of several groups of heat sinks 55, absorb the heat of the cooling of the inner circulation of the water tank ring 51 and discharge it to the outside, and at the same time cooperate with the airflow blown by the lower fan 4 to achieve the purpose of cooling it, so as to avoid the coolant circulating inside from overheating and affecting the heat dissipation effect; in addition, several groups of heat sinks 55 and conical rings 522 guide the incoming airflow, spirally rise to discharge the internal hot air, accelerate the internal heat transfer and diffusion, and the guide sleeve 518 will discharge the airflow downward to avoid blowing directly onto the iron core of the transformer body 1, and at the same time drive several groups of fan blades 521 and rotating rings 520 along the annular The groove 519 rotates to drive the heat absorption component 6 on the lower side to work; when the several groups of fan blades 521 rotate, they will push the several groups of telescopic rods 62 to move downward, squeezing the spring 64, and the pushed push ring 65 squeezes the distilled water inside the water storage shell 61, and a small amount of distilled water is sprayed from the several groups of nozzles 66 to the surface of the transformer body 1 through the sealing film 67. The distilled water has the property of being non-conductive, so that the distilled water sprayed to the surface of the insulating shell 2 absorbs heat from it, further improving the high-temperature internal environment, avoiding overheating and overloading of the transformer as a whole during use, and improving the overall overload resistance.

[0041] The electronic equipment and structural principles used in the present invention are common knowledge in this field, and the working principle is already a known technology, and the model is selected according to the actual use, so it will not be explained in detail.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload resistant power transformer, comprising a transformer body (1), characterized in that: Three groups of insulating shells (2) are arranged outside the transformer body (1); two groups of bases (3) are fixedly arranged at the lower end of the transformer body (1); two groups of fans (4) are fixedly arranged on the two groups of bases (3); a cooling assembly (5) is arranged inside the three groups of insulating shells (2); a heat absorption assembly (6) is arranged outside the three groups of insulating shells (2); the cooling assembly (5) comprises a water tank ring (51) arranged inside the insulating shell (2); a plurality of fixed blocks (52) are fixedly arranged between the lower side of the water tank ring (51) and the inner wall of the insulating shell (2); a telescopic shell (53) is slidably arranged inside the water tank ring (51); a guide spiral sheet (54) is fixedly arranged inside the telescopic shell (53); a plurality of heat sinks (55) are fixedly arranged outside the water tank ring (51); a shunt pipe (56) is fixedly arranged on the rear side of the water tank ring (51); a shunt pipe (56) is fixedly arranged on the lower side of the shunt pipe (56); a heat sink (55) is fixedly arranged on the lower side of the shunt pipe (56); a heat sink (55) is fixedly arranged on the upper ... An electric control valve (57) is installed. A lower water connection pipe (58) is fixedly arranged near the middle position on the rear side of the three groups of diverter pipes (56). Four groups of support blocks (59) are fixedly arranged on the upper end of the telescopic shell (53). Elastic spiral sheets (510) are fixedly arranged on the upper ends of the four groups of support blocks (59). Four groups of connecting blocks (511) are fixedly arranged between the upper side of the elastic spiral sheets (510) and the upper inner wall of the insulating shell (2). A heat absorbing tube (512) is fixedly arranged, an upper water connecting tube (513) is fixedly arranged on the upper side of the three groups of heat absorbing tubes (512) near the rear position, a water pump (514) is fixedly arranged on the rear side of one of the two groups of bases (3) near the middle position, a water pump (515) is fixedly arranged between the water pumping end of the water pump (514) and the upper water connecting tube (513), and a water outlet tube (516) is fixedly arranged between the water outlet end of the water pump (514) and the lower water connecting tube (58); The water tank ring (51) is provided with a coolant inside, a plurality of groups of the fixing blocks (52) are evenly arranged in a circular shape, the telescopic shell (53) is sealed and fitted with the water tank ring (51), and a plurality of groups of the heat sinks (55) are arranged obliquely; The flow distribution pipe (56) is respectively connected to the upper and lower sides of the water tank ring (51); the lower water connection pipe (58) and the upper water connection pipe (513) pass through the inner side of the insulating shell (2); the heat absorption pipe (512) is a stainless steel corrugated pipe; the lower side of the heat absorption pipe (512) is fixedly connected to the telescopic shell (53); and the water pumping pipe (515) is provided with an external coolant replenishing pipe.

2. An overload-resistant power transformer according to claim 1, characterized in that: A plurality of groups of air outlets (517) are provided on the upper side of the insulating shell (2); a guide sleeve (518) is fixedly provided on the upper end of the insulating shell (2) near the outer side of the air outlet (517); an annular groove (519) is provided on the outer side of the insulating shell (2) near the inner side of the guide sleeve (518); a rotating ring (520) is rotatably provided on the inner side of the annular groove (519); a plurality of groups of fan blades (521) are fixedly provided on the outer side of the rotating ring (520); and a plurality of groups of conical rings (522) are fixedly provided on the inner wall of the insulating shell (2).

3. The overload-resistant power transformer according to claim 1, characterized in that: The heat absorption component (6) comprises a water storage shell (61) fixedly arranged on the outer side of the insulating shell (2) near the upper position, a plurality of groups of telescopic rods (62) are movably arranged on the inner side of the water storage shell (61), a circular ring (63) is fixedly arranged on the outer side of the telescopic rod (62), a spring (64) is fixedly arranged between the circular ring (63) on the outer side of the telescopic rod (62) and the water storage shell (61), a plurality of groups of push rings (65) are fixedly arranged on the lower end of the telescopic rods (62), a plurality of groups of nozzles (66) are fixedly arranged on the lower end of the water storage shell (61), a sealing rubber sheet (67) is fixedly arranged on the outer side of the nozzle (66), and an air flow sheet (68) is fixedly arranged on the outer side of the insulating shell (2) near the lower position.

4. The overload-resistant power transformer according to claim 2, characterized in that: The guide sleeve (518) covers the outside of the plurality of groups of air outlets (517), the plurality of groups of fan blades (521) are evenly distributed in a circular shape outside the rotating ring (520), and the plurality of groups of fan blades (521) and the plurality of groups of conical rings (522) are both arranged in an inclined manner.

5. The overload-resistant power transformer according to claim 3, characterized in that: The inner side of the water storage shell (61) is provided with distilled water. The water storage shell (61) is in communication with the inner sides of a plurality of groups of nozzles (66). The upper end of the telescopic rod (62) is an arc-shaped surface. The telescopic rod (62) corresponds to between two adjacent groups of fan blades (521).

6. The overload-resistant power transformer according to claim 3, characterized in that: The nozzle (66) is arranged obliquely toward the surface of the insulating housing (2), and the sealing rubber sheet (67) is sealed in the nozzle (66) and has a cross opening.

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