A heat dissipation device for power transformer

Abstract

The present invention discloses a heat dissipation device for a power transformer, comprising a collecting chassis, an air cooling mechanism for air cooling and a water cooling mechanism for water cooling, the air cooling mechanism comprising a support plate, a C-shaped rod and a first gear, and the water cooling mechanism comprising a circular plate and a water storage tank. The heat dissipation device of the present invention dissipates heat by arranging a heat dissipation mode of air cooling and water cooling, and the combination of air cooling and water cooling can achieve efficient heat dissipation from multiple angles. The airflow generated by the heat dissipation fan can quickly take away the water vapor generated by the evaporation of atomized water on the surface of the transformer body, accelerate the vaporization process of water, and at the same time, the heat dissipation fan can make the air circulate around the transformer body to expand the heat dissipation range.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer heat dissipation, and more specifically, particularly relates to a heat dissipation device for a power transformer. Background Art

[0002] A transformer is an electrical device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of an iron core and two (or more) windings wound around the iron core. It is used in power systems to increase or decrease voltage to meet the different voltage requirements of long-distance power transmission and user power consumption. Common transformer heat dissipation methods include the following.

[0003] Natural cooling: The heat is dissipated by natural convection and radiation through the heat sink or heat pipe on the surface of the transformer oil tank. This method is suitable for transformers with small capacity and low load.

[0004] Air cooling: Install a fan on the transformer heat sink or heat pipe to dissipate heat through forced air convection.

[0005] Oil cooling: The transformer windings and core are immersed in insulating oil, and the heat is removed by the circulating flow of oil.

[0006] Water cooling: Heat is dissipated into the water through the contact between water and the radiator.

[0007] A Chinese patent with publication number CN103680824A discloses a transformer heat dissipation device, which has better heat dissipation effect than existing heat dissipation devices, simpler structure, higher packaging efficiency, and lower packaging cost than existing heat dissipation devices, overcomes technical prejudice, omits technical elements, and produces positive and beneficial technical effects.

[0008] The existing transformer heat dissipation device has the following disadvantages.

[0009] 1. The existing transformer cooling method usually adopts a single air cooling or water cooling method. The single cooling mode can only meet the cooling requirements under low power consumption or low temperature. When the transformer is in a high temperature and high load working environment, the single cooling mode is difficult to meet the cooling requirements, resulting in poor cooling effect of the transformer.

[0010] 2. When the existing transformers are dissipating heat, they use only air cooling or water cooling. When the air cooling method is used alone, the cooling fan needs to be started for a long time. When the ambient temperature rises, the temperature difference driving force of the air cooling will decrease, and the ability of the air to take away heat will also decrease, which consumes electricity and has poor heat dissipation effect. When the water cooling method is used alone, if a better heat dissipation effect is to be achieved, a large amount of water resources may be required for spraying, resulting in a waste of water.

[0011] In view of this, the existing structure and defects are studied and improved, and a heat dissipation device for a power transformer is provided, in order to achieve a purpose with greater practical value. Summary of the invention

[0012] In order to solve the above technical problems, the present invention provides a heat dissipation device for a power transformer to solve the above problems.

[0013] The technical solution adopted by the present invention to solve its technical problems is: a heat dissipation device for an electric transformer, comprising a collecting chassis for carrying a transformer body, an air cooling mechanism arranged on the collecting chassis for air-cooling and dissipating heat to the transformer body, and a water cooling mechanism below the collecting chassis for water-cooling and dissipating heat to the transformer body; the air cooling mechanism comprises two support plates fixedly mounted on the collecting chassis and at least two columns fixedly mounted on the upper ends of the support plates, a top frame and a C-shaped rod fixedly mounted on the upper ends of the top frames are respectively fixedly mounted on the upper ends of the columns, and a power supply, a motor and a heat dissipation fan connected in sequence are respectively fixed on the C-shaped rod; the water cooling mechanism comprises a water storage tank arranged below the collecting chassis, a reciprocating screw rod rotatably mounted between the two support plates and the top frame, and a circular plate connected to the reciprocating screw rod through a threaded hole, the circular plate is located at the four side ends of the transformer body, and atomizing nozzles are fixedly mounted on the four side ends of the inner wall of the circular plate, and the atomizing nozzles are connected to the water storage tank through a water guide pipe.

[0014] The heat dissipation device for an electric transformer has a power supply fixedly installed on the lower end of a C-shaped rod, two motors are electrically fixedly installed on the lower end of the power supply, a rotating shaft is fixedly installed on the output ends of the two motors, a cooling fan is fixedly installed on the lower ends of the two rotating shafts, the circumferential end of the rotating shaft is also connected to a second gear, the circumferential end of the reciprocating screw is fixed with a first gear, and the first gear and the second gear are simultaneously meshed with an annular toothed belt.

[0015] The heat dissipation device for an electric transformer is described, wherein a water pump is fixedly installed on the upper end of a water storage tank, a water receiving pipe at the lower end of the water pump is located on the inner side wall of the water storage tank, a diverter is fixedly installed on the upper end of the water pump, and water pipes are fixedly installed through the four side ends of the diverter, each end of the water pipe is fixedly installed on the side end of each atomizing nozzle, and each water pipe is fixedly installed through the side end of the circular plate.

[0016] The heat dissipation device for an electric transformer is provided with a water inlet at the upper end of the water storage tank, and at least two first through holes are penetrated through the upper end of the collecting chassis. At least two collecting pipes are fixedly installed on the upper end of the water storage tank, and the first through holes are connected to the water storage tank through the collecting pipes. Each of the collecting pipes is slidably installed on the inner side wall of each first through hole, and a filter layer is fixedly installed on the inner side wall of each collecting pipe.

[0017] The heat dissipation device for a power transformer has a fixing rod fixedly mounted on the lower end of the top frame, fixing covers fixedly mounted on both side ends of the fixing rod, and two heat dissipation fans rotatably mounted on the inner side walls of the two fixing covers.

[0018] The heat dissipation device for a power transformer has at least two support rods fixedly installed between the water storage tank and the collecting chassis, and the upper end of the circular plate is penetrated by a plurality of second through holes for the reciprocating screw rod to pass through.

[0019] Compared with the prior art, the present invention has the following beneficial effects.

[0020] The present invention dissipates heat by means of a heat dissipation method that combines air cooling with water cooling. The combination of air cooling and water cooling can achieve efficient heat dissipation from multiple angles. The airflow generated by the heat dissipation fan can quickly take away the water vapor generated on the surface of the transformer body due to the evaporation of atomized water, thereby accelerating the water vaporization process. At the same time, the heat dissipation fan can make the air circulate around the transformer body to expand the heat dissipation range, and the water sprayed by the atomizing nozzle can evenly distribute the water in various parts of the transformer body, thereby ensuring that the overall temperature of the transformer body can be effectively controlled.

[0021] The present invention dissipates heat from the transformer body by means of a motor, a cooling fan and an atomizing nozzle. In some high-temperature environments or when the transformer is running under high load, simple air cooling may not be able to meet the heat dissipation requirements. As the ambient temperature increases, the temperature difference driving force of air cooling will decrease, and the ability of air to carry away heat will also decrease. The addition of water cooling can significantly reduce the temperature of the transformer body through the vaporization heat absorption of water, thereby making up for the deficiency of air cooling and ensuring efficient heat dissipation of the transformer body.

[0022] The present invention is provided with an air cooling mechanism and a water cooling mechanism which can be controlled separately. When the air cooling can meet the temperature reduction demand and the water cooling is started without starting the water pump, and when the air cooling cannot meet the heat dissipation effect, the water cooling assistance can be started, thereby avoiding the situation where long-term start-up of the air cooling consumes electricity and the heat dissipation effect is poor, and simultaneously avoiding the use of water cooling alone. If a good heat dissipation effect is to be achieved, a large amount of water resources may be required for spraying, resulting in a waste of water. Thus, the waste of resources can be reduced while ensuring the heat dissipation effect.

[0023] The present invention cooperates with the second gear, the first gear and the toothed belt. When the motor drives the heat dissipation fan to start, the reciprocating screw rod can be driven to rotate under the cooperation of the first gear, the second gear and the toothed belt, thereby driving the circular plate to move back and forth up and down. When the atomizing nozzle on the circular plate moves up and down, the sprayed water mist can better cover various parts of the transformer with the airflow, thereby ensuring the heat dissipation effect of the transformer body. The movement of the atomizing nozzle does not require additional electric drive, but uses the same power source as the heat dissipation fan, and is driven under the cooperation of the first gear, the second gear and the toothed belt, thereby reducing additional energy consumption.

[0024] The present invention cooperates with a collecting chassis, a collecting pipe and a filtering layer. The collecting chassis can realize centralized recovery of the water after spraying, and the recovered water enters the water storage tank from the collecting pipe. The collecting pipe is provided with a filtering layer, and the filtering layer can realize effective filtration of the water, thereby ensuring the cleanliness of the water recovered into the water storage tank. While realizing the recycling of the water, the cleanliness of the water is ensured, thereby avoiding a large amount of water resource waste during water cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front structural schematic diagram of the water storage tank of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the water storage tank of the present invention; Figure 4 It is a structural schematic diagram of the circular plate of the present invention; Figure 5 It is a schematic diagram of the structure explosion of the circular plate of the present invention; Figure 6 It is a structural schematic diagram of the top frame of the present invention; Figure 7 It is a schematic diagram of the structure explosion of the heat dissipation fan of the present invention; Figure 8 It is a schematic diagram of the structure explosion of the toothed belt of the present invention.

[0026] The figures are marked as follows: 1—collecting chassis, 11—support rod, 12—first through hole, 2—support plate, 21—column, 22—top frame, 3—C-shaped rod, 31—power supply, 32—motor, 33—rotating shaft, 34—cooling fan, 35—fixing rod, 36—fixing cover, 4—first gear, 41—second gear, 42—toothed belt, 43—reciprocating screw rod, 5—reciprocating plate, 51—second through hole, 52—threaded hole, 53—atomizing nozzle, 6—water storage tank, 61—collecting pipe, 62—filter layer, 63—water pump, 64—water guide pipe, 65—diverter, 66—water inlet, 7—transformer body. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] See also Figures 1 to 8 As shown, the present invention provides a heat dissipation device for a power transformer, including a collecting chassis 1 and a transformer body 7, wherein the collecting chassis 1 is provided with an air cooling mechanism for facilitating air cooling and heat dissipation of the transformer body 7, and the collecting chassis 1 is provided with a water cooling mechanism for facilitating water cooling and heat dissipation of the transformer body 7.

[0029] The air cooling mechanism includes a support plate 2, a C-shaped rod 3 and a first gear 4, and the water cooling mechanism includes a circular plate 5 and a water storage tank 6. The device dissipates heat by setting a heat dissipation mode of air cooling and water cooling. The combination of air cooling and water cooling can achieve efficient heat dissipation from multiple angles. The airflow generated by the heat dissipation fan 34 can quickly take away the water vapor generated by the evaporation of atomized water on the surface of the transformer body 7, accelerating the water vaporization process. At the same time, the heat dissipation fan 34 can make the air circulate around the transformer body 7 to expand the heat dissipation range, and the water sprayed by the atomizing nozzle 53 can evenly distribute the water body to various parts of the transformer body 7, ensuring that the overall temperature of the transformer body 7 can be effectively controlled.

[0030] There are two support plates 2, both of which are fixedly mounted on the upper end of the collecting chassis 1, at least two columns 21 are fixedly mounted on the upper end of the two support plates 2, the upper end of each column 21 is fixedly mounted with the same top frame 22, a C-shaped rod 3 is fixedly mounted on the upper end of the top frame 22, a power supply 31 is fixedly mounted on the lower end of the C-shaped rod 3, a reciprocating screw rod 43 is rotatably mounted between the top frame 22 and the two support plates 2, there are two first gears 4, and the two first gears 4 are fixedly mounted on the circumferential ends of the two reciprocating screw rods 43, respectively, a circular plate 5 is located at the four side ends of the transformer body 7, and the transformer body 7 is fixedly mounted on the upper end of the collecting chassis 1, In actual use, the transformer body 7 contains a large amount of insulating materials, such as insulating oil, insulating paper, etc. The insulating properties of these insulating materials are closely related to temperature. When the temperature of the transformer body 7 is too high, the insulating properties of the insulating materials will decrease. Under the action of the alternating magnetic field, eddy current loss and hysteresis loss will be generated in the iron core. These losses will also be converted into heat. If the temperature of the iron core is too high, its performance will also decrease. Good heat dissipation measures can enable the transformer body 7 to operate within a normal temperature range, reduce the damage and aging rate of components, thereby extending the service life of the transformer body 7 and ensuring that the transformer body 7 can perform its voltage conversion and other functions in a long-term and stable manner in systems such as power grids.

[0031] At least two support rods 11 are fixedly installed between the water tank 6 and the collecting chassis 1. At least two first through holes 12 are penetrated through the upper end of the collecting chassis 1. Two motors 32 are electrically fixedly installed at the lower end of the power supply 31. The output ends of the two motors 32 are fixedly installed with a rotating shaft 33. The lower ends of the two rotating shafts 33 are fixedly installed with cooling fans 34. When the transformer body 7 is cooled, the user can start the power supply 31. After the power supply 31 is turned on, the two motors 32 will be powered. After the two motors 32 are started, the cooling fans 34 will be driven to rotate through the rotating shaft 33. The rotation of the cooling fans 34 generates wind force to cool the transformer body 7.

[0032] A fixing rod 35 is fixedly installed at the lower end of the top frame 22, and a fixing cover 36 is fixedly installed at both side ends of the fixing rod 35. The two cooling fans 34 are rotatably installed on the inner side walls of the two fixing covers 36 respectively. The circumferential ends of the two rotating shafts 33 are fixedly installed with second gears 41, and annular toothed belts 42 are respectively meshed and installed between the two second gears 41 and the two first gears 4. After the two motors 32 are started, the two rotating shafts 33 will be driven to rotate. The rotation of the two rotating shafts 33 will drive the second gears 41 at the circumferential ends of the two rotating shafts 33 to rotate. The rotation of the two second gears 41 will drive the first gear 4 to rotate through the toothed belt 42. The rotation of the two first gears 4 will drive the two reciprocating screws 43 to rotate between the top frame 22 and the two support plates 2. The threads on the two reciprocating screws 43 are respectively matched with the two threaded holes 52.

[0033] A plurality of second through holes 51 are penetrated through the upper end of the circular plate 5, and the circular plate 5 is slidably installed on the circumferential end of each column 21 through each second through hole 51. Two threaded holes 52 are penetrated through the upper end of the circular plate 5, and two toothed belts 42 are respectively threaded and rotatably installed on the inner side walls of the threaded holes 52. Atomizing nozzles 53 are fixedly installed on the four side ends of the inner side wall of the circular plate 5. A water inlet 66 is provided on the upper end of the water storage tank 6. At least two collecting pipes 61 are fixedly installed on the upper end of the water storage tank 6. Each collecting pipe 61 penetrates and slides on the inner side wall of each first through hole 12, and a filter layer 62 is fixedly installed on the inner side wall of each collecting pipe 61. A water pump 63 is fixedly installed on the upper end of the water storage tank 6, and a water receiving pipe at the lower end of the water pump 63 is located at the water storage tank. On the inner wall of the box 6, a diverter 65 is fixedly installed on the upper end of the water pump 63, and water pipes 64 are fixedly installed on the four side ends of the diverter 65. The end of each water pipe 64 is fixedly installed on the side end of each atomizing nozzle 53, and each water pipe 64 is fixedly installed on the side end of the circular plate 5. When the two reciprocating screws 43 rotate, they will drive the circular plate 5 to move up and down through the threaded hole 52. When the user turns on the water pump 63, the water storage tank 6 will pump water from the water storage tank 6. The pumped water enters the diverter 65 and is distributed to each water pipe 64. Finally, the pumped water will pass through the water pipe 64 into the atomizing nozzle 53, and be atomized and sprayed out through the atomizing nozzle 53, thereby realizing water cooling of the transformer body 7.

[0034] The working principle of the present invention is as follows.

[0035] The first step is that in actual use, the transformer body 7 has a large amount of insulating materials inside, such as insulating oil, insulating paper, etc. The insulating properties of these insulating materials are closely related to temperature. When the temperature of the transformer body 7 is too high, the insulating properties of the insulating materials will decrease. Under the action of the alternating magnetic field, eddy current loss and hysteresis loss will be generated in the iron core. These losses will also be converted into heat. If the temperature of the iron core is too high, its performance will also decrease. Good heat dissipation measures can make the transformer body 7 operate within a normal temperature range, reduce the damage and aging speed of components, thereby extending the service life of the transformer body 7 and ensuring that the transformer body 7 can perform its voltage conversion and other functions in a long-term and stable manner in systems such as power grids.

[0036] In the second step, when cooling the transformer body 7, the user can start the power supply 31. After the power supply 31 is turned on, it will supply power to the two motors 32. After the two motors 32 are started, they will drive the cooling fan 34 to rotate through the rotating shaft 33. The rotation of the cooling fan 34 generates wind force to cool the transformer body 7. If the weather is hot or the workload of the transformer body 7 is too heavy, the heat dissipation relying solely on the air cooling mechanism is not ideal, the user can also start the water pump 63.

[0037] In the third step, after the two motors 32 are started, the two rotating shafts 33 will be driven to rotate. The rotation of the two rotating shafts 33 will drive the second gears 41 at the circumferential ends of the two rotating shafts 33 to rotate. The rotation of the two second gears 41 will drive the first gear 4 to rotate through the toothed belt 42. The rotation of the two first gears 4 will drive the two reciprocating screws 43 to rotate between the top frame 22 and the two support plates 2. The threads on the two reciprocating screws 43 are respectively matched with the two threaded holes 52. When the two reciprocating screws 43 rotate, they will drive the circular plate 5 to move up and down through the threaded holes 52. When the user turns on the water pump 63, the water tank 6 will pump water from the water tank 6. The water sucked out by the pump will enter the diverter 65 and will be distributed to each water pipe 64. Finally, the water sucked by the pump will enter the atomizing nozzle 53 through the water pipe 64 and be atomized and sprayed out through the atomizing nozzle 53, thereby realizing water cooling of the transformer body 7.

[0038] The device dissipates heat by arranging a heat dissipation method of air cooling combined with water cooling. The combination of air cooling and water cooling can achieve efficient heat dissipation from multiple angles. The airflow generated by the heat dissipation fan 34 can quickly take away the water vapor generated by the evaporation of atomized water on the surface of the transformer body 7, accelerating the water vaporization process. At the same time, the heat dissipation fan 34 can make the air circulate around the transformer body 7 to expand the heat dissipation range, and the water sprayed by the atomizing nozzle 53 can evenly distribute the water in various parts of the transformer body 7, ensuring that the overall temperature of the transformer body 7 can be effectively controlled.

[0039] The device dissipates heat from the transformer body 7 by arranging a motor 32, a cooling fan 34, and an atomizing nozzle 53. In some high-temperature environments or when the transformer is running under high load, simple air cooling may not be able to meet the heat dissipation requirements, and as the ambient temperature increases, the temperature difference driving force of air cooling will decrease, and the ability of air to carry away heat will also decrease. The addition of water cooling can significantly reduce the temperature of the transformer body 7 through the vaporization of water and the absorption of heat, thereby making up for the deficiency of air cooling and ensuring efficient heat dissipation of the transformer body 7.

[0040] The device is provided with separately controllable air cooling mechanism and water cooling mechanism. When air cooling can meet the temperature reduction demand and water cooling is started without starting the water pump 63, and when air cooling cannot meet the heat dissipation effect, water cooling assistance can be started, thereby avoiding the situation where long-term air cooling is started to consume electricity and the heat dissipation effect is poor. At the same time, it avoids the use of water cooling alone. If a good heat dissipation effect is to be achieved, a large amount of water resources may be required for spraying, resulting in waste of water. The waste of resources can be reduced while ensuring the heat dissipation effect.

[0041] The device is provided with a second gear 41, a first gear 4 and a toothed belt 42 for cooperation. When the motor 32 drives the cooling fan 34 to start, the reciprocating screw 43 can be driven to rotate under the cooperation of the first gear 4, the second gear 41 and the toothed belt 42, thereby driving the circular plate 5 to move up and down reciprocatingly. When the atomizing nozzle 53 on the circular plate 5 moves up and down, the sprayed water mist can better cover various parts of the transformer with the airflow, thereby ensuring the heat dissipation effect of the transformer body 7. The movement of the atomizing nozzle 53 does not require additional electric drive, but uses the same power source as the cooling fan 34, and is driven under the cooperation of the first gear 4, the second gear 41 and the toothed belt 42, thereby reducing additional energy consumption.

[0042] In the fourth step, during the heat dissipation process of the transformer body 7, the water sprayed by the atomizing nozzle 53 will eventually fall onto the collecting chassis 1. The collecting chassis 1 is located directly below the transformer body 7 and can effectively collect the wastewater generated under the spraying. A plurality of collecting tubes 61 are provided on the inner wall of the first through hole 12 on the collecting chassis 1. A filter layer 62 is also provided in the collecting tube 61. The water under the spraying can be recycled into the water storage tank 6 again through the collecting tube 61 after being recycled, so as to realize the recycling of the water body. The filter layer 62 arranged in the collecting tube 61 can filter the water body. The material of the filter layer 62 is a fiber filter material with good elasticity and large specific surface area. The fiber filaments on the filter layer 62 are opened to form countless tiny filter pores. These pores can effectively intercept the suspended particles in the sewage. As the filtering process proceeds, impurities will gradually accumulate on the fiber balls. The filtering capacity of the fiber balls can be restored by backwashing. The filtering effect is good and it is convenient to use. While realizing the recycling of the water body, the cleanliness of the recycled water body is guaranteed.

[0043] The device is equipped with a collecting chassis 1, a collecting pipe 61 and a filtering layer 62. The collecting chassis 1 can realize the centralized recovery of the water after spraying, and the recovered water enters the water storage tank 6 from the collecting pipe 61. The collecting pipe 61 is provided with a filtering layer 62. The filtering layer 62 can realize the effective filtration of the water, and ensure the cleanliness of the water recovered into the water storage tank 6. While realizing the recycling of the water, the cleanliness of the water is guaranteed, and a large amount of water resource waste caused by water cooling is avoided.

[0044] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A heat dissipation device for a power transformer, characterized in that: The invention comprises a collecting chassis (1) carrying a transformer body (7), an air cooling mechanism arranged on the collecting chassis (1), and a water cooling mechanism below the collecting chassis (1); the air cooling mechanism comprises a support plate (2) fixed on the collecting chassis (1) and a column (21) fixed on the support plate (2); a top frame (22) and a C-shaped rod (3) on the top frame (22) are respectively fixed to the upper end of the column (21); a power supply (31), a motor (32) and a cooling fan (34) connected in sequence are fixed to the C-shaped rod (3); the water cooling mechanism comprises a water storage tank (6) arranged below the collecting chassis (1), a reciprocating screw rod (43) installed between the support plate (2) and the top frame (22), and a circular plate (5) connected to the reciprocating screw rod (43) through a threaded hole (52); an atomizing nozzle (53) is installed on the inner side wall of the circular plate (5); the atomizing nozzle (53) is connected to the water storage tank (6) through a water guide pipe (64).

2. A heat dissipation device for a power transformer according to claim 1, characterized in that: The output end of the motor (32) is connected to the cooling fan (34) via a rotating shaft (33); the rotating shaft (33) is also connected to a second gear (41); a first gear (4) is fixed to the reciprocating screw (43); and the first gear (4) and the second gear (41) are simultaneously meshed with a toothed belt (42).

3. A heat dissipation device for a power transformer according to claim 1, characterized in that: A water pump (63) is installed on the water storage tank (6), and the water pump (63) is connected to the water guide pipe (64) through a diverter (65).

4. A heat dissipation device for a power transformer according to claim 1, 2 or 3, characterized in that: The upper end of the water storage tank (6) is provided with a water inlet (66), and the collecting bottom plate (1) is provided with at least two first through holes (12). The first through holes (12) are connected to the water storage tank (6) via a collecting pipe (61), and a filtering layer (62) is provided on the collecting pipe (61).

5. A heat dissipation device for a power transformer according to claim 4, characterized in that: A fixing cover (36) is mounted on the top frame (22) via a fixing rod (35), and the heat dissipation fan (34) is mounted in the fixing cover (36).

6. A heat dissipation device for a power transformer according to claim 5, characterized in that: At least two support rods (11) are installed between the water storage tank (6) and the collecting chassis (1), and a plurality of second through holes (51) for the reciprocating screw rod (43) to pass through are provided on the circular plate (5).

Images