A three-dimensional wound-core transformer

Abstract

The present invention discloses a three-dimensional wound core transformer, which relates to the technical field of transformers and includes a transformer body, a base, and a heat dissipation housing. The base is arranged at the central position of the lower end of the transformer body, and the heat dissipation housing is arranged outside the transformer body. A heat dissipation space is left between the heat dissipation housing and the outer wall of the transformer body. The outer wall of the transformer body is wound with a main condensation pipe. The heat dissipation space includes multiple groups of heat flow spaces and storage spaces, and the heat flow spaces and storage spaces are distributed at intervals and are connected. A storage groove is opened on the outer wall of the heat dissipation housing between each heat flow space and the storage space, and a fire extinguisher is arranged in the storage groove. Through the air cooling cooperation of the main condensation pipe and the fan in the heat dissipation space, the present invention effectively dissipates heat and cools down the transformer body, and in cooperation with the reversible deformation characteristic of the shape memory metal sheet, when the transformer body has abnormal temperature rise, the fire extinguisher is triggered to extinguish the fire, making the fire fighting of the transformer body more timely and greatly reducing the damage of the transformer body.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a three-dimensional wound core transformer. Background Art

[0002] Transformers are basic power transmission and distribution equipment, widely used in industries, agriculture, transportation, urban communities and other fields. The three-dimensional wound core transformer is an energy-saving power transformer. It creatively reforms the laminated magnetic circuit structure and three-phase layout of traditional power transformers, making the product performance more optimized, such as the three-phase magnetic circuits being completely symmetrical, significant power saving effect, greatly reduced noise, stronger heat dissipation and overload capacity, and compact structure with small volume.

[0003] CN118888280B discloses a three-dimensional wound core transformer, including a base. At the central position on the top of the base, a transformer main body is provided. The transformer main body is triangular in shape. Three groups of identical heat dissipation fins are arranged on the outer wall of the transformer main body. Three mounting blocks are arranged at the top edges of the three corners on the outer wall of the transformer main body. Three lead screws are rotatably installed in the through holes opened on the three mounting blocks. In the present invention, by driving a driving mechanism arranged at the top of the three lead screws to drive the mounting frame to move up and down, the mounting frame drives a plurality of nozzles arranged at the bottom of three spray pipes to move up and down between the inner walls of the three groups of heat dissipation fins to wash the dust adsorbed on the inner walls. While the mounting frame moves up and down, it drives a plurality of sponge sleeves connected to the side walls of the bottom through a U-shaped connecting frame to wipe the inner walls of the three groups of heat dissipation fins, and at the same time adsorb the remaining water on the inner walls, so that the inner walls of the heat dissipation fins are kept clean, thereby improving the cleaning efficiency.

[0004] However, in the prior art, the heat dissipation efficiency of the three-dimensional wound core transformer is low. The heat dissipation method mainly relies on natural heat dissipation or air cooling. However, in high-load or high-temperature environments, the heat dissipation efficiency is low, and it is difficult to effectively control the temperature rise, resulting in the windings and the iron core being in a high-temperature state for a long time, accelerating the insulation aging, affecting the equipment life. And in a high-temperature environment, if the heat dissipation is not timely, it is easy to cause the transformer to catch fire. Especially in the case of power supply failures or unattended situations, it is difficult to suppress the fire in time, increasing the risk of fire spread and insufficient safety guarantee. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide a three-dimensional wound core transformer to solve the problem of poor heat dissipation effect of existing transformers.

[0006] To solve the above technical problem, the present invention provides the following technical solutions:

[0007] On the one hand, the present invention provides a three-dimensional wound-core transformer, which includes a transformer body, a base, and a heat dissipation housing. The base is disposed at the central position of the lower end of the transformer body. The heat dissipation housing is disposed outside the transformer body, and a heat dissipation space is left between the heat dissipation housing and the outer wall of the transformer body. The outer wall of the transformer body is wound with a main condensing pipe. The heat dissipation space includes multiple groups of heat flow spaces and storage spaces. The heat flow spaces and the storage spaces are arranged at intervals and communicated with each other. A storage groove is formed on the outer wall of the heat dissipation housing between each heat flow space and the storage space, and a fire extinguisher is provided in the storage groove. A relay and a battery are respectively provided in the storage space. A flow guiding fin is longitudinally provided in the heat flow space. A heat dissipation fin is provided on the outer wall of the heat dissipation housing. An exhaust port is communicated above the heat flow space. A fan is provided below the heat dissipation housing, and the output end of the fan is communicated with the lower part inside the storage space.

[0008] The storage space is communicated with the lower part of the heat flow space. A plurality of nozzles communicated with the fire extinguisher are provided above the heat dissipation housing. An electromagnetic valve is provided at the output end of the fire extinguisher. A shape memory alloy sheet is provided on the outer wall of the transformer body at the heat flow space, and the shape memory alloy sheet is electrically connected to the battery. The electromagnetic valve is electrically connected to the battery through the relay. The fan is powered by the battery.

[0009] Further, the storage space is communicated with the lower part of the heat flow space. A flow guiding pipe is provided below the heat flow space, and the flow guiding pipe is communicated with the storage space. Through holes are provided on the flow guiding pipe and communicated with the adjacent flow guiding fins. After the fan is started, external air can be introduced into the flow guiding pipe after passing through the storage space, and flows into the spaces between the corresponding flow guiding fins through the multiple through holes on the flow guiding pipe to dissipate heat inside the heat flow space.

[0010] Further, the flow guiding fins are arranged in a wavy structure, and the distance between adjacent flow guiding fins is 10-20 mm, which increases the heat exchange area, improves the contact amount between the air and the inner wall, enhances the heat dissipation ability, and accelerates the flow rate of the hot air, strengthening the convection effect.

[0011] Further, a heat dissipation groove is provided above the storage space. An air duct communicated with the air outlet end of the fan is provided below the storage space. Guide strips are symmetrically provided on both sides of the upper end of the air duct, and the guide strips are arranged towards the flow guiding pipe. Through the provided flow guiding pipe, most of the gas can be led to the flow guiding pipe, and the other part remains in the storage space to cool the auxiliary condensing pipe in the storage space. The heat in the storage space flows away from the heat dissipation groove to achieve the heat dissipation effect.

[0012] Furthermore, a centrifugal pump is provided in one of the storage spaces, and the relay, centrifugal pump and battery are respectively arranged in different storage spaces. An auxiliary condenser is coiled inside the storage space, and the auxiliary condenser is connected to the main condenser. The auxiliary condenser is fitted with the outer wall of the relay, centrifugal pump or battery. The main condenser is driven by the centrifugal pump, and the main condenser takes away the heat after passing through the heat flow space. When passing through the storage space, the condensate in the main condenser enters the auxiliary condenser, and the fan directly contacts the first cold air introduced from the outside with the auxiliary condenser, thereby achieving rapid cooling of the auxiliary condenser.

[0013] Furthermore, a mesh seat is provided at the lower end of the heat dissipation shell, and filters are provided at the bottom and sides of the mesh seat. The fan is located inside the mesh seat, and an exhaust pipe is connected to the upper end of the exhaust port. The air outlet end of the exhaust pipe is arranged away from the transformer body. The filter can effectively reduce the possibility of external dust entering the heat dissipation space through the fan, thereby ensuring the heat dissipation effect.

[0014] Furthermore, a main pipe and a fixed pipe are provided on the upper part of the heat dissipation shell, a plurality of fire extinguisher output ends are connected to the main pipe, the main pipe output end is connected to the end face of the fixed pipe, the solenoid valve is arranged between the main pipe and the fixed pipe, and the nozzle is connected to the fixed pipe. By energizing the solenoid valve, the fire extinguishing agent in the fire extinguisher can be sprayed outward through the nozzle, and the solenoid valve is powered off to close the connection between the main pipe and the fixed pipe.

[0015] Furthermore, a storage rack is provided in the heat flow space, the memory metal sheet is arranged in the storage rack, a bracket is provided in the storage rack, a seesaw is rotatably provided on the upper end of the bracket, the bracket is located near one end of the seesaw, the lower end of the memory metal sheet is connected to the lower part of the interior of the storage rack, and the upper end is connected to one end of the seesaw.

[0016] Furthermore, a fixed block is provided on the storage rack above one end of the seesaw away from the memory metal sheet, a conductive sheet is provided below the fixed block, a conductive block adapted to the conductive sheet is provided on the upper end of the seesaw, the conductive block is electrically connected to the conductive sheet, the conductive block is electrically connected to the battery, the conductive sheet is electrically connected to the solenoid valve through a relay, the memory metal sheet in the initial state is in a straightened state, the seesaw is in a tilted state, the conductive block and the conductive sheet do not contact each other, when the transformer body heats up abnormally, the memory metal sheet reaches a critical deformation value and gradually deforms and bends, thereby pulling one end of the seesaw downward, and one end of the conductive block moves upward until it contacts the conductive sheet, thereby realizing a closed circuit, the solenoid valve is energized, and a fire extinguishing operation can be performed, wherein the wires used for electrical connection are all heat-insulating and fire-proof wires, and are all connected to the inner wall of the heat dissipation shell to protect the safety of the wires.

[0017] Further, a support plate is rotatably provided above the rocker plate. The support plate is connected to the conductive block through a sponge pad above it. When the end face of the rocker plate moves upward, the conductive block first contacts the conductive sheet. As the angle changes during the upward movement, the support plate will rotate accordingly, so that the surface of the conductive block is always in contact with a larger area of the conductive sheet. And the setting of the sponge pad makes the contact between the conductive sheet and the conductive block more stable, avoiding the situation of intermittent disconnection during the contact process.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, the heat dissipation space is divided into a heat flow space and a storage space. The main heat - generating position of the transformer body is located in the heat flow space. When air flows in the heat flow space, due to the entry of cold air at the bottom and the discharge of hot air at the top, a dynamic temperature - difference heat - exchange process is maintained in the whole system. Flow - guiding fins are added in the heat flow space to guide the air flow to be evenly distributed along the surface of the transformer, increasing the heat - exchange area. And the flow - guiding fins are arranged in a wavy shape, increasing the residence time of the air flow in the heat flow space, thereby increasing the heat - exchange area and taking away more heat. Through the provided heat - dissipation fins, another part of the heat can be directly discharged through the heat - dissipation fins on the outer wall of the heat - dissipation shell, improving the heat - dissipation efficiency.

[0020] 2. In the present invention, through the air - cooling cooperation of the main condensing pipe and the fan in the heat - dissipation space, effective heat dissipation and temperature reduction of the transformer body are realized. And in combination with the reversible deformation characteristic of the shape - memory metal sheet, when the temperature of the transformer body rises abnormally, a fire extinguisher is triggered to extinguish the fire, making the fire - fighting of the transformer body more timely and greatly reducing the damage of the transformer body.

[0021] 3. In the present invention, the main condensing pipe is wound around the outer wall of the transformer body to directly cool the heat dissipated by the transformer body by water - cooling. When the heat taken away by the condensed liquid enters the storage space, the first wave of cold air of the fan will directly contact the main condensing pipe located in the storage space to directly cool the main condensing pipe. After cooling, the condensed liquid enters the heat flow space to continue absorbing heat and takes away the heat in the heat flow space, achieving an effective cooling effect. And the relay, the centrifugal pump and the battery are in direct contact with the auxiliary condensing pipe, and part of the heat generated during their operation can also be taken away by the auxiliary condensing pipe.

[0022] 4. In the present invention, when the end face of the rocker plate moves upward, the conductive block first contacts the conductive sheet. As the angle changes during the upward movement, the support plate will rotate accordingly, so that the surface of the conductive block is always in contact with a larger area of the conductive sheet. And the setting of the sponge pad makes the contact between the conductive sheet and the conductive block more stable, avoiding the situation of intermittent disconnection during the contact process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a perspective view of a three-dimensional wound core transformer provided by the present invention.

[0025] Figure 2 It is a schematic diagram of the assembly structure of the heat dissipation shell and the mesh base of a three-dimensional wound core transformer provided by the present invention.

[0026] Figure 3 It is a schematic diagram of the internal structure of the heat dissipation shell of a three-dimensional wound core transformer provided by the present invention.

[0027] Figure 4 It is a schematic diagram of the internal structure of the heat flow space of a three-dimensional wound core transformer provided by the present invention.

[0028] Figure 5 It is a schematic diagram of the thermal deformation state of the shape memory alloy sheet of a three-dimensional wound core transformer provided by the present invention.

[0029] Figure 6 It is a schematic diagram of the initial state of the shape memory alloy sheet of a three-dimensional wound core transformer provided by the present invention.

[0030] Figure 7 It is a schematic diagram of the auxiliary condenser tube of a three-dimensional wound core transformer provided by the present invention.

[0031] Figure 8 It is a schematic diagram of the positions of the air duct and the diversion tube of a three-dimensional wound core transformer provided by the present invention.

[0032] Legend Explanation:

[0033] 1. Transformer body; 2. Base; 3. Heat dissipation shell; 4. Main condensate pipe; 511. Heat flow space; 512. Storage space; 513. Storage tank; 611. Fire extinguisher; 612. Nozzle; 613. Solenoid valve; 614. Shape memory metal sheet; 711. Relay; 712. Battery; 713. Centrifugal pump; 714. Auxiliary condensate pipe; 811. Flow guiding fin; 812. Heat dissipation fin; 813. Exhaust port; 814. Fan; 911. Flow guiding pipe; 912. Through hole; 101. Heat dissipation groove; 102. Air duct; 103. Guide strip; 111. Mesh base; 112. Filter screen; 113. Exhaust pipe; 121. Main pipe; 122. Fixed pipe; 131. Storage rack; 132. Bracket; 133. Rocker; 134. Fixed block; 135. Conductive sheet; 136. Conductive block; 137. Support plate; 138. Sponge pad. Detailed implementation manners

[0034] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0035] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0036] Secondly, as used herein, "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments.

[0037] Please refer to Figures 1-2 , the present invention provides a technical solution: a three-dimensional wound core transformer, including a transformer body 1, a base 2, and a heat dissipation shell 3. The base 2 is disposed at the center position of the lower end of the transformer body 1, and the heat dissipation shell 3 is disposed outside the transformer body 1. A heat dissipation space is left between the heat dissipation shell 3 and the outer wall of the transformer body 1.

[0038] Please refer to Figure 3 , Figure 4 , Figure 7 and Figure 8, a main condensate pipe 4 is wound around the outer wall of the transformer body 1. The heat dissipation space includes multiple groups of heat flow spaces 511 and storage spaces 512. The heat flow spaces 511 and the storage spaces 512 are distributed at intervals and are connected. Storage grooves 513 are formed in the outer wall of the heat dissipation housing 3 between each heat flow space 511 and the storage space 512. Fire extinguishers 611 are arranged in the storage grooves 513. A relay 711 and a battery 712 are respectively arranged in the storage space 512. Flow guiding fins 811 are longitudinally arranged in the heat flow space 511. Heat dissipation fins 812 are arranged on the outer wall of the heat dissipation housing 3. An exhaust port 813 is communicated above the heat flow space 511. A fan 814 is arranged below the heat dissipation housing 3. The output end of the fan 814 is communicated with the lower part inside the storage space 512.

[0039] The storage space 512 is communicated with the lower part of the heat flow space 511. Multiple nozzles 612 communicated with the fire extinguishers 611 are arranged above the heat dissipation housing 3. A solenoid valve 613 is arranged at the output end of the fire extinguisher 611. A shape memory alloy sheet 614 is arranged on the outer wall of the transformer body 1 at the heat flow space 511. The shape memory alloy sheet 614 is electrically connected to the battery 712. The solenoid valve 613 is electrically connected to the battery 712 through the relay 711. The fan 814 is powered by the battery 712.

[0040] A flow guiding pipe 911 is arranged below the heat flow space 511. The flow guiding pipe 911 is communicated with the storage space 512. Through holes 912 communicated with the adjacent flow guiding fins 811 are arranged on the flow guiding pipe 911. After the fan 814 is started, external air can be introduced into the flow guiding pipe 911 after passing through the storage space 512, and flows into the spaces between the corresponding flow guiding fins 811 from the multiple through holes 912 on the flow guiding pipe 911 to dissipate heat inside the heat flow space 511.

[0041] The flow guiding fins 811 are arranged in a wavy structure. The distance between adjacent flow guiding fins 811 is 10 - 20 mm, which increases the heat exchange area, improves the contact amount between air and the inner wall, enhances the heat dissipation capacity, and speeds up the flow rate of hot air, enhancing the convection effect.

[0042] See Figure 3 and Figures 7-8, there is a centrifugal pump 713 in a storage space 512. The relay 711, the centrifugal pump 713 and the battery 712 are respectively arranged in different storage spaces 512. The auxiliary condensation pipe 714 is coiled inside the storage space 512. The auxiliary condensation pipe 714 is connected to the main condensation pipe 4. The auxiliary condensation pipe 714 is attached to the outer wall of the relay 711, the centrifugal pump 713 or the battery 712. The main condensation pipe 4 is driven by the centrifugal pump 713. After passing through the heat flow space 511, the main condensation pipe 4 takes away the heat. When passing through the storage space 512, the condensate in the main condensation pipe 4 enters the auxiliary condensation pipe 714. The fan 814 directly contacts the first stream of cold air introduced from the outside with the auxiliary condensation pipe 714 to quickly cool down the auxiliary condensation pipe 714.

[0043] There is a heat dissipation slot 101 above the storage space 512. There is an air duct 102 below the storage space 512, which is connected to the air outlet end of the fan 814. Guide strips 103 are symmetrically arranged on both sides of the upper end of the air duct 102. The guide strips 103 are arranged towards the diversion pipe 911. Through the arranged diversion pipe 911, most of the gas can be led to the diversion pipe 911, and the other part remains in the storage space 512 to cool the auxiliary condensation pipe 714 in the storage space 512. The heat in the storage space 512 flows away from the heat dissipation slot 101 to achieve the heat dissipation effect.

[0044] There is a net base 111 at the lower end of the heat dissipation housing 3. Filters 112 are arranged at the bottom and the side of the net base 111. The fan 814 is located inside the net base 111. An exhaust pipe 113 is connected to the upper end of the exhaust port 813. The air outlet end of the exhaust pipe 113 is far away from the transformer body 1. Through the arranged filters 112, the possibility of external dust entering the heat dissipation space through the fan 814 can be effectively reduced, thus ensuring the heat dissipation effect.

[0045] There is a main pipe 121 and a fixed pipe 122 above the heat dissipation housing 3 inside. The output ends of multiple fire extinguishers 611 are connected to the main pipe 121. The output end of the main pipe 121 is connected to the end face of the fixed pipe 122. The solenoid valve 613 is arranged between the main pipe 121 and the fixed pipe 122. The spray pipe 612 is connected to the fixed pipe 122. By energizing the solenoid valve 613, the fire extinguishing agent in the fire extinguisher 611 can be sprayed out through the spray pipe 612. When the solenoid valve 613 is de-energized, the connection between the main pipe 121 and the fixed pipe 122 is closed.

[0046] As Figures 5-6 shown, there is a storage rack 131 in the heat flow space 511. The shape memory alloy sheet 614 is arranged in the storage rack 131. There is a bracket 132 in the storage rack 131. A rocker 133 is rotatably arranged at the upper end of the bracket 132. The bracket 132 is located at the position close to one end of the rocker 133. The lower end of the shape memory alloy sheet 614 is connected to the lower part inside the storage rack 131, and the upper end is connected to one end of the rocker 133.

[0047] A fixed block 134 is provided on the storage rack 131 above one end of the seesaw 133 away from the memory metal sheet 614, a conductive sheet 135 is provided below the fixed block 134, a conductive block 136 adapted to the conductive sheet 135 is provided at the upper end of the seesaw 133, the conductive block 136 is electrically connected to the conductive sheet 135, the conductive block 136 is electrically connected to the battery 712, the conductive sheet 135 is electrically connected to the solenoid valve 613 through the relay 711, the memory metal sheet 614 in the initial state is in a straightened state, and the seesaw 133 is in a straightened state. In the tilted state, the conductive block 136 and the conductive sheet 135 do not contact each other. When the transformer body 1 is abnormally heated, the memory metal sheet 614 reaches the critical deformation value and gradually deforms and bends, thereby pulling one end of the seesaw 133 downward, and one end of the conductive block 136 moves upward until it contacts the conductive sheet 135, realizing a closed circuit. The solenoid valve 613 is energized and a fire extinguishing operation can be performed. The wires used for electrical connection are all heat-insulating and fire-proof wires, and are all connected to the inner wall of the heat dissipation housing 3 to protect the safety of the wires.

[0048] A support plate 137 is rotatably provided above the seesaw 133, and the support plate 137 is connected to the conductive block 136 through a sponge pad 138. When the end surface of the seesaw 133 moves up, the conductive block 136 first contacts the conductive sheet 135. As the angle changes during the rise, the support plate 137 rotates accordingly, so that the surface of the conductive block 136 is always in contact with a larger area of the conductive sheet 135. The provision of the sponge pad 138 makes the contact between the conductive sheet 135 and the conductive block 136 more stable, avoiding the situation of disconnection from time to time during the contact process.

[0049] Working principle: When the inside of the transformer body 1 is hotter, start the fan 814 to introduce external cold air from the lower end of the storage space 512. Since the storage space 512 and the heat flow space 511 are connected at the bottom, the cold air enters the bottom of the heat flow space 511 and quickly contacts the heat flow in the heat flow space 511, causing the heat to flow upward along the guide fins 811 and finally be discharged from the exhaust port 813, while a portion of the heat is discharged from the heat dissipation fins 812 through the heat dissipation shell 3. In addition, the main condenser 4 is wrapped around the outer wall of the transformer body 1, and the heat dissipated by the transformer body 1 is directly water-cooled. When the heat carried away by the condensate enters the storage space 512, the first wave of cold air from the fan 814 will directly contact the main condenser 4 located in the storage space 512, directly cool the main condenser 4, and the cooled condensate enters the heat flow space 511 to continue to absorb heat, taking away the heat in the heat flow space 511, thereby achieving an effective cooling effect.

[0050] If the internal temperature of the transformer body 1 is too high and causes spontaneous combustion, the shape memory alloy sheet 614 is directly in contact with the hottest position on the outer wall of the transformer body 1, which can determine whether the temperature of the transformer body 1 rises abnormally. When the temperature rises abnormally to the spontaneous combustion temperature, the shape memory alloy sheet 614 enters the austenite phase and undergoes a reversible deformation. At this time, one end of the rocker 133 is pulled down, and one end with the conductive block 136 moves up until it contacts the conductive sheet 135, realizing a closed circuit. The solenoid valve 613 is energized, and the fire extinguisher 611 starts to spray the fire extinguishing agent above the transformer body 1 through the spray pipe 612. When the fire extinguishing is completed, the temperature of the transformer body 1 will gradually decrease, and the shape memory alloy sheet 614 will also cool to the martensite phase, that is, the low-temperature original state. At this time, the contact is disconnected, the solenoid valve 613 is de-energized, and the fire extinguisher 611 stops spraying, making the fire fighting of the transformer body 1 more timely and greatly reducing the damage to the transformer body 1.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A three-dimensional wound core transformer, comprising a transformer body (1), a base (2) and a heat dissipation housing (3), wherein the base (2) is arranged at the central position of the lower end of the transformer body (1), and the heat dissipation housing (3) is arranged outside the transformer body (1), and is characterized in that: There is a heat dissipation space left between the outer wall of the heat dissipation housing (3) and the outer wall of the transformer body (1). The outer wall of the transformer body (1) is wound with a main condensing pipe (4). The heat dissipation space includes multiple groups of heat flow spaces (511) and storage spaces (512). The heat flow spaces (511) and the storage spaces (512) are distributed at intervals and are connected. An outer wall of the heat dissipation housing (3) between each heat flow space (511) and the storage space (512) is provided with a storage groove (513). A fire extinguisher (611) is arranged in the storage groove (513). A relay (711) and a battery (712) are respectively arranged in the storage space (512). A flow guiding fin (811) is longitudinally arranged in the heat flow space (511). A heat dissipation fin (812) is arranged on the outer wall of the heat dissipation housing (3). An exhaust port (813) is communicated above the heat flow space (511). A fan (814) is arranged below the heat dissipation housing (3). An output end of the fan (814) is communicated with the interior below of the storage space (512); An output end of the fire extinguisher (611) is provided with a solenoid valve (613). A shape memory alloy sheet (614) is arranged on the outer wall of the transformer body (1) at the heat flow space (511). The shape memory alloy sheet (614) is electrically connected to the battery (712). The solenoid valve (613) is electrically connected to the battery (712) through the relay (711). The fan (814) is powered by the battery (712); The storage space (512) is communicated with the lower part of the heat flow space (511). A flow guiding pipe (911) is arranged below the heat flow space (511). The flow guiding pipe (911) is communicated with the storage space (512). The flow guiding pipe (911) is provided with through holes (912) that are communicated with adjacent flow guiding fins (811). The flow guiding fins (811) are arranged in a wavy structure. The distance between adjacent flow guiding fins (811) is 10-20 mm; A heat dissipation groove (101) is arranged above the storage space (512). An air duct (102) that is communicated with the air outlet end of the fan (814) is arranged below the storage space (512). Guide strips (103) are symmetrically arranged on both sides of the upper end of the air duct (102). The guide strips (103) face the flow guiding pipe (911).

2. The three-dimensional wound core transformer according to claim 1, characterized in that, A centrifugal pump (713) is arranged in one storage space (512). The relay (711), the centrifugal pump (713) and the battery (712) are respectively arranged in different storage spaces (512). An auxiliary condensing pipe (714) is wound inside the storage space (512). The auxiliary condensing pipe (714) is communicated with the main condensing pipe (4). The auxiliary condensing pipe (714) is attached to the outer walls of the relay (711), the centrifugal pump (713) or the battery (712). The main condensing pipe (4) is connected to the centrifugal pump (713).

3. The three-dimensional wound core transformer according to claim 1, wherein The lower end of the heat dissipation housing (3) is provided with a mesh base (111), and filter meshes (112) are provided at the bottom and the side of the mesh base (111). The fan (814) is located inside the mesh base (111). An exhaust pipe (113) is communicated and provided at the upper end of the exhaust port (813), and the air outlet end of the exhaust pipe (113) is arranged away from the transformer body (1).

4. A three-dimensional wound core transformer according to claim 1, characterized in that, Above the interior of the heat dissipation housing (3), a main pipe (121) and a fixed pipe (122) are provided. The output ends of a plurality of the fire extinguishers (611) are communicated and arranged with the main pipe (121), and the output end of the main pipe (121) is communicated and arranged with the end face of the fixed pipe (122). An electromagnetic valve (613) is arranged between the main pipe (121) and the fixed pipe (122), and a spray pipe (612) is communicated and provided on the fixed pipe (122).

5. The three-dimensional wound core transformer according to claim 2, characterized in that, A storage rack (131) is arranged in the heat flow space (511), a shape memory metal sheet (614) is arranged in the storage rack (131), a support (132) is arranged in the storage rack (131), a rocker (133) is rotatably arranged at the upper end of the support (132), the support (132) is located at a position close to one end of the rocker (133), the lower end of the shape memory metal sheet (614) is connected to the lower part inside the storage rack (131), and the upper end is connected to one end of the rocker (133).

6. A three-dimensional wound core transformer according to claim 5, characterized in that, A fixed block (134) is arranged on the storage rack (131) above one end of the rocker (133) away from the shape memory metal sheet (614), a conductive sheet (135) is arranged below the fixed block (134), a conductive block (136) adapted to the conductive sheet (135) is arranged at the upper end of the rocker (133), the conductive block (136) is electrically connected to the conductive sheet (135), the conductive block (136) is electrically connected to the battery (712), and the conductive sheet (135) is electrically connected to the electromagnetic valve (613) through a relay (711).

7. A three-dimensional wound core transformer according to claim 6, characterized in that, A support plate (137) is rotatably arranged above the rocker (133), and the support plate (137) is connected to the conductive block (136) through a sponge pad (138) above.

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