Water-cooled special transformer

Abstract

The invention relates to the technical field of special transformers, in particular to a water-cooled special transformer. The transformer comprises a transformer body, a cooling mechanism is installed at the bottom of the transformer body, a plurality of heat exchange holes are formed in the top of a water tank, the middle end of a water-cooling bent pipe penetrates through the heat exchange holes to enter the water tank, and cooling liquid in the water-cooling bent pipe can exchange heat with cooling liquid in the water tank when flowing through the interior of the water tank; and the middle end of the water-cooling bent pipe can also be subjected to auxiliary positioning by virtue of the heat exchange hole. The middle end of the water-cooling bent pipe extends into the water tank, so that cooling liquid absorbing a large amount of heat in the water-cooling bent pipe can intermittently flow into the water-cooling bent pipe area soaked in the water tank and exchanges heat with cooling liquid with relatively low temperature in the water tank, after heat exchange, the temperature of the cooling liquid is effectively balanced, and the cooling effect of the water-cooling bent pipe is improved. When the water flows through the surface of the transformer again, a stable and efficient water-cooling heat dissipation effect can be kept.

Description

Technical Field

[0001] The present invention relates to the technical field of special transformers, and more specifically, to a water-cooled special transformer. Background Art

[0002] A transformer is a device that changes the AC voltage based on the principle of electromagnetic induction. It consists of primary and secondary coils and an iron core, and can achieve voltage and current transformation, impedance matching, and electrical isolation. Special transformers are developed based on ordinary transformers and are used for special purposes or specific conditions; When a transformer is in operation, the copper loss of the winding and the iron loss of the iron core will be converted into heat, causing the temperature of the transformer to rise. In the development process of transformer heat dissipation technology, the traditional method of relying on external heat dissipation fins to dissipate the heat of internal electrical components has become difficult to meet the heat dissipation requirements due to factors such as the increase in transformer power and the complexity of the operating environment. Thus, as shown in the patent with the publication number CN115512935A, for a water-cooled special transformer, serpentine-distributed heat-conducting copper tubes are arranged on both sides of the transformer body, and a water pump is used to pump the water in the water tank into the copper tubes to achieve water-cooled heat dissipation. However, after the water flows from the water tank into the first heat-conducting copper tube and exchanges heat with the transformer body, the water temperature in the heat-conducting tube rises, resulting in a decrease in the heat exchange efficiency when flowing into the subsequent heat-conducting copper tubes, affecting the heat dissipation effect of the transformer; Therefore, for a water-cooled special transformer with the patent number CN118538509B, in this solution, after the heat-conducting copper tube cools one side of the transformer with water, the water flow will flow through the pipeline in the water tank, exchange heat using the water flow in the water tank, and then the water flow after heat exchange will enter the heat-conducting copper tubes on the surface of the other side of the transformer; Generally speaking, the heat dissipated from the surface of the transformer is relatively balanced. When using a heat-conducting copper tube to cool one side of the transformer, during the process of the cooling water flow flowing from the starting end to the ending end of the copper tube, it continuously absorbs the heat dissipated from the transformer, and the temperature gradually rises. Since the heat dissipation effect is related to the temperature difference between the cooling water and the transformer surface, at the beginning, the temperature difference between the cooling water temperature and the transformer surface is large, the heat dissipation is fast and the effect is good. However, at the end, after the water temperature rises, the temperature difference with the transformer surface decreases, the heat transfer efficiency decreases, and the heat dissipation effect becomes poor, resulting in a situation where the front section of the same side of the transformer is cooled well and the rear section is cooled poorly, and uniform single-sided heat dissipation cannot be achieved; In view of this, there is an urgent need for a water-cooled special transformer to solve the above problems. Summary of the Invention

[0003] The present invention provides a water-cooled special transformer, which optimizes the circulation path of the coolant on the surface of the transformer body through the improvement of the water-cooled bent pipe, so as to efficiently and uniformly absorb heat during the operation of the transformer, thereby improving the overall heat dissipation efficiency and ensuring the stable operation of the transformer, and thus solving the problems raised in the above background art, that is: On the same side of the transformer, the front section cools well while the rear section cools poorly, making it impossible to achieve uniform single-sided heat dissipation.

[0004] To achieve the above object, this water-cooled special transformer includes a transformer body. Radiating fins are installed on both sides of the transformer body. The circuit of the transformer body is installed at the side end, and a cooling mechanism is installed at the bottom of the transformer body. The cooling mechanism includes a water-cooling mechanism and a temperature-lowering mechanism. The water-cooling mechanism includes a water tank. A water-cooling elbow is fitted on the surface of the transformer body, and the water-cooling elbow at the side end penetrates inside the radiating fins. The water-cooling elbow conveys the coolant in the water tank to exchange heat with the transformer body and the radiating fins. The temperature-lowering mechanism is located between the water-cooling mechanism and the transformer body to insulate the transformer body and buffer the temperature reduction in the area where the water-cooling elbow is close to the radiating fins. Among them, a plurality of heat exchange holes are opened at the top of the water tank. The middle end of the water-cooling elbow passes through the heat exchange holes and enters the inside of the water tank. When the coolant in the water-cooling elbow flows through the inside of the water tank, it can exchange heat with the coolant in the water tank. At the same time, the middle end of the water-cooling elbow can also be assisted in positioning by means of the heat exchange holes.

[0005] In the above technical solution, because a cooling mechanism including a water-cooling mechanism and a temperature-lowering mechanism is installed at the bottom of the transformer body, the water-cooling mechanism exchanges heat through the water tank and the water-cooling elbow, the temperature-lowering mechanism realizes insulation and local temperature reduction, and the water tank has heat exchange holes for the water-cooling elbow to pass through. In this way, an efficient heat dissipation system is formed, which has the functions of increasing the heat dissipation area, circulating the coolant for heat dissipation, and reducing the temperature of key parts. When the transformer operates and generates heat, the radiating fins and the water-cooling elbow cooperate to dissipate heat. The coolant in the water-cooling elbow is cooled by heat exchange through the water tank, ensuring the stability of the transformer body.

[0006] On this basis, the number of heat exchange holes near the two radiating fins is more than that on the other two sides of the water tank surface. The area near the radiating fins is the area where the heat of the transformer body is concentrated. More heat exchange holes can enable more water-cooling elbows to pass through here and enter the water tank frequently, accelerating the heat exchange between the high-temperature coolant and the low-temperature coolant in the water tank, strengthening the cooling effect around the radiating fins, and effectively reducing the high temperature in this area.

[0007] Further, a connection port is opened in the middle of the water-cooling elbow at the end far from the two radiating fins, and the connection port is located inside the liquid storage cavity. The end of the connection port is hermetically connected to a support elbow, and the bottom of the support elbow is attached to the bottom of the liquid storage cavity.

[0008] In this technical solution, a connection port is provided in the middle of the water-cooled elbow far from the ends of the two heat dissipation fins and is connected to the support elbow, optimizing the structure and heat dissipation performance of the water-cooling system. Specifically, the flow path of the coolant is changed. The support elbow extends the flow time of the coolant in the liquid storage cavity, enabling the coolant to have more opportunities to exchange heat with the low-temperature coolant in the liquid storage cavity, enhancing the overall heat exchange effect. In addition, the bottom of the support elbow fits the bottom of the liquid storage cavity, providing stable support for the water-cooled elbow from below, effectively sharing the gravity of the water-cooled elbow, and greatly reducing the risk of displacement or deformation of the water-cooled elbow caused by the impact of coolant flow and equipment vibration, ensuring that the water-cooled elbow can always stably dissipate heat from the transformer and guaranteeing the long-term stable operation of the entire water-cooling system.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: During the operation of the transformer body, the heat dissipation fins installed on both sides can assist in dissipating the heat generated during the operation of the transformer body. During operation, the coolant in the water tank will circulate on the surface of the transformer body through the water-cooled elbow. The water-cooled elbow is inserted between two sets of heat dissipation fins. During the flow of the coolant, on the one hand, it directly absorbs the heat dissipated by the transformer body, and on the other hand, it cools the heat dissipation fins by water cooling. The dual heat dissipation mechanism improves the heat dissipation efficiency and enhances the heat dissipation efficiency of the transformer body. From the installation layout of the water-cooled elbow, its middle part extends into the water tank, which enables the coolant that has absorbed a large amount of heat in the water-cooled elbow to intermittently flow into the area of the water-cooled elbow immersed in the water tank and exchange heat with the relatively low-temperature coolant in the water tank. After heat exchange, the temperature of the coolant is effectively balanced, and when it flows through the surface of the transformer again, it can maintain a stable and efficient water-cooling heat dissipation effect. It is particularly worth mentioning that the water-cooled elbow close to the heat dissipation fins enters the water tank for heat exchange more frequently than other positions, enabling the area close to the heat source to obtain more timely and sufficient cooling, further enhancing the overall heat dissipation efficiency of the transformer body. In addition, the cooling mechanism provided between the water-cooling mechanism and the transformer body can assist in reducing the temperature of the water tank, providing more favorable conditions for water-cooling heat dissipation. Before the water-cooled elbow close to the heat dissipation fins enters the water tank for heat exchange, it will first undergo cooling and buffering in the cooling mechanism, further enhancing the heat exchange effect on the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the overall side rear structural schematic diagram of the present invention; Figure 3 is the sectional structural schematic diagram of the cooling mechanism of the embodiment of the present invention; Figure 4 is the present invention Figure 3Schematic diagram of the structure at position A; Figure 5 Cross-sectional side view of the water tank according to an embodiment of the present invention; Figure 6 Cross-sectional front view of the water tank according to an embodiment of the present invention; Figure 7 Schematic diagram of the connection structure between the water-cooled elbow and the drive structure according to an embodiment of the present invention; Figure 8 Schematic diagram of the connection structure between the cooling mechanism and the water-cooling mechanism according to an embodiment of the present invention; Figure 9 Cross-sectional front view of the support cover plate according to an embodiment of the present invention; Figure 10 Bottom view of the inside of the water tank according to an embodiment of the present invention.

[0011] The meanings of each reference numeral in the figure are as follows: 1. Transformer body; 11. Heat dissipation fins; 2. Cooling mechanism; 21. Water-cooling mechanism; 22. Cooling-down mechanism; 210. Liquid exchange pipe; 211. Water tank; 212. Installation profile; 213. Drive structure; 214. Heat exchange hole; 215. Inner pad; 216. Water-cooled elbow; 221. Support cover plate; 222. Annular pipe; 223. Air-cooling machine; 224. Side discharge hole; 225. Cooling hole; 3. Inner plate; 31. Drive cavity; 32. Water pump; 33. Liquid storage cavity; 34. Liquid outlet hole; 35. Liquid inlet hole; 4. Support elbow; 41. Connection port. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0013] Currently, for the problem that the front section of the transformer on the same side is cooled well and the rear section is cooled poorly, and uniform single-sided heat dissipation cannot be achieved, the present invention provides a water-cooled special transformer. See Figures 1 - 3As shown in the figure, on both sides of the transformer body 1, heat dissipation fins 11 are respectively installed to increase the heat dissipation area and assist in heat dissipation. At the bottom of the transformer body 1, a cooling mechanism 2 is provided, which is jointly composed of a water cooling mechanism 21 and a temperature reduction mechanism 22. The water cooling mechanism 21 takes the water tank 211 as the core component. On the surface of the transformer body 1, water cooling elbows 216 are closely attached. The water cooling elbows 216 at the side end are skillfully inserted into the heat dissipation fins 11. The coolant in the water tank 211 circulates through the water cooling elbows 216 to efficiently exchange heat with the transformer body 1 and the heat dissipation fins 11, and timely take away the heat generated during the operation of the transformer. The temperature reduction mechanism 22 is located between the water cooling mechanism 21 and the transformer body 1. On the one hand, it insulates the transformer body 1 and effectively avoids potential safety hazards caused by electrical failures; on the other hand, it cools and buffers the area where the water cooling elbows 216 are close to the heat dissipation fins 11 and have a relatively high temperature, further optimizing the heat dissipation effect.

[0014] It should be noted that a plurality of heat exchange holes 214 are opened at the top of the water tank 211. The middle ends of the water cooling elbows 216 pass through these heat exchange holes 214 and enter the interior of the water tank 211. When the coolant in the water cooling elbows 216 flows through the interior of the water tank 211, it can exchange heat with the coolant in the water tank 211 to achieve its own temperature reduction. At the same time, the middle ends of the water cooling elbows 216 obtain an auxiliary positioning effect through the heat exchange holes 214, improving the reliability and heat dissipation efficiency of the entire water cooling system.

[0015] During the operation of the transformer body 1, the heat dissipation fins 11 and the water cooling mechanism 21 operate in combination to cool the transformer body 1. Next, the specific structure of the water cooling mechanism 21 will be disclosed. The water cooling mechanism 21 further includes a mounting profile 212 installed at the side end of the water tank 211. A liquid changing pipe 210 is provided on the surface of the water tank 211, and a driving structure 213 is provided inside the water tank 211. The driving structure 213 forms a double-layer structure inside the water tank 211.

[0016] Refer to Figure 2 And in combination with Figure 3 As shown in the figure, a mounting profile 212 is provided at the side end of the water tank 211. This profile plays a role in firmly supporting the water tank 211 to ensure its stability during operation. A liquid changing pipe 210 is provided on the surface of the water tank 211. When it is necessary to replace the coolant, suspend the water cooling operation link of the transformer body 1. Subsequently, separate the sealing pipe in the liquid changing pipe 210 from the liquid changing pipe 210, and then the coolant replacement operation can be carried out. Among them, deionized water can be selected as the coolant, which can absorb a large amount of heat, has a high heat dissipation efficiency, and deionized water removes impurities such as minerals in the water, reducing the risk of conductivity.

[0017] In the water-cooling structure, the coolant needs to circulate through the driving structure 213 in the water-cooling elbow 216. The specific structure of the driving structure 213 will be disclosed below. The driving structure 213 includes an inner plate 3. The inner plate 3 is a square frame structure and is fixedly installed inside the water tank 211. The inner plate 3 divides the interior of the water tank 211 into a driving chamber 31 and a liquid storage chamber 33.

[0018] A water pump 32 is installed inside the driving chamber 31. One end of the water pump 32 is hermetically connected to a liquid outlet hole 34 opened on the inner wall of the liquid storage chamber 33. The other end of the water pump 32 is connected to the water-cooling elbow 216. The water-cooling elbow 216 is provided with a liquid inlet hole 35. The liquid inlet hole 35 is located inside the liquid storage chamber 33, and the position of the liquid inlet hole 35 inside the liquid storage chamber 33 is lower than that of the liquid outlet hole 34.

[0019] As Figure 3 It can be seen that the water pump 32 is installed inside the driving chamber 31 (the water pump 32 can be a wireless structure or can be externally powered). When the water pump 32 is running, the internal motor works continuously and generates heat. Inside the driving chamber 31, a heat dissipation hole is opened at the bottom of the installation position of the water pump 32, so that the hot air generated by the operation of the water pump 32 is naturally discharged through this hole. At the same time, the setting of the inner plate 3 forms a double-layer structure inside the water tank 211. The double-layer structure design plays a good heat insulation role, effectively blocking the transfer of heat, making it difficult for the external heat to be transferred to the liquid storage chamber 33, thereby maintaining the temperature stability of the coolant in the liquid storage chamber 33 and ensuring that the coolant always maintains good heat dissipation performance. It should be noted that the heat generated by the water pump 32 can be discharged through the heat dissipation hole and will not affect the temperature of the liquid storage chamber 33, and the heat dissipation hole is opened in a specific area (that is, the bottom of the installation position of the water pump 32) and will not affect the heat preservation effect of the water tank 211; In addition, the water tank 211 is located at the bottom of the transformer body 1 and is close to the ground. Usually, the air flow near the ground is relatively slow, less affected by factors such as solar radiation, has a relatively low temperature and small fluctuations, and can further assist in maintaining the temperature of the coolant in the liquid storage chamber 33, so that the coolant is always in a temperature range conducive to heat dissipation; At the same time, combined with Figure 5 It can be seen that the water tank 211 is designed as a double-layer structure. Compared with the single-layer structure, its material consumption increases and the structure is more solid. In terms of mechanical properties, the double-layer structure can better disperse and bear the gravity exerted by the transformer body 1, reducing the situation of excessive local pressure. This not only enhances the support stability of the water tank 211 for the transformer body 1 but also effectively reduces the damage of the water tank 211 caused by long-term excessive pressure, providing a reliable support foundation for the stable operation of the transformer body 1.

[0020] In a liquid, according to the principle of convection, the liquid with a higher temperature has a lower density and will flow upward, while the liquid with a lower temperature has a higher density and will flow downward. In the liquid storage chamber 33, after the coolant absorbs the heat of the transformer, its temperature rises. The hot coolant will gradually accumulate in the lower layer, while the relatively cold coolant is located in the upper layer. The liquid outlet hole 34 of the water-cooled elbow 216 is set at a high position. As Figure 6 shown, when the water pump 32 works, it will preferentially extract the relatively cold coolant in the upper layer of the liquid storage chamber 33. These low-temperature coolants enter the water pump 32 through the liquid outlet hole 34 and are then transported to the water-cooled elbow 216. Since the coolant entering the water-cooled elbow 216 has a lower temperature, the temperature difference between it and the transformer body 1 is larger, and it can absorb the heat generated by the operation of the transformer more efficiently, thus improving the heat dissipation efficiency of the water-cooling system.

[0021] Furthermore, as shown in the patent CN221861409U, the water tank 211 of this embodiment is also installed at the bottom of the transformer body 1. When the water tank 211 is provided at the bottom of the transformer body 1, the circuit connection of the transformer body 1 usually adopts the side connection method. Combining Figure 2 with the pipeline installed on the surface of the transformer body 1 for circuit connection, the circuit is installed in the pipeline. When a circuit fault occurs, the maintenance personnel can quickly locate the problem, which is convenient for troubleshooting and repair. On the other hand, the pipeline itself has good insulation characteristics, which can effectively prevent the circuit leakage from causing safety hazards to surrounding equipment and personnel. It should be noted that the size of the pipeline shown in the drawings is only for illustration. In actual engineering applications, relevant electrical standards need to be followed to determine the specific size of the pipeline to ensure the safety and reliability of the entire system.

[0022] The number of heat exchange holes 214 near the two heat dissipation fins 11 is more than that on the other two sides of the surface of the water tank 211.

[0023] The improvement lies in that when the coolant is driven by the water pump 32 and is brought into the water-cooled elbow 216 from the liquid outlet hole 34 on the inner wall of the liquid storage chamber 33, it can combine with the water-cooled elbow 216 to dissipate heat from the transformer body 1. The water-cooled elbow 216 fits the surface of the transformer body 1. During the flow of the coolant, through the way of heat conduction, it continuously absorbs the heat generated during the operation of the transformer body 1 to achieve the heat exchange effect. As Figure 7As shown, the water-cooled bent pipe 216 surrounds the transformer body 1. When dissipating heat from one side of the transformer body 1, the water-cooled bent pipe 216 will pass through the heat exchange hole 214 opened on the surface of the water tank 211 and enter the interior of the water tank 211. At this time, since the coolant has exchanged heat with the transformer body 1 before, its temperature is higher than that of the coolant in the water tank 211. Based on the principle of heat transfer, the coolant with a higher temperature will transfer heat to the relatively low-temperature coolant in the water tank 211, thereby achieving its own cooling. When the cooled coolant returns to the surface of the transformer body 1 again, its lower temperature enables it to absorb the heat dissipated by the transformer body 1 more efficiently. In this way, the cycle repeats, to a certain extent, balancing the heat dissipation effect at various parts of the surface of the transformer body 1, reducing the occurrence of local overheating, and ensuring its stable operation; Among them, the main function of the heat dissipation fins 11 is to increase the heat dissipation area and accelerate heat dissipation. However, during the operation of the transformer body 1, the area where the heat dissipation fins 11 are located has a relatively higher temperature than other positions of the transformer body 1 because a large amount of heat is concentrated in this area. In order to effectively reduce the temperature of this high-temperature area, combined with Figure 5 and Figure 7 As shown, the water-cooled bent pipe 216 near the heat dissipation fins 11 is designed to enter the water tank 211 more frequently than other positions. When the water-cooled bent pipe 216 frequently passes through the heat exchange hole 214 and enters the water tank 211, the coolant with a higher temperature in the pipe can exchange heat and be cooled with the low-temperature coolant in the water tank 211 more timely. When the cooled coolant returns to the surface of the transformer body 1 near the heat dissipation fins 11, it can effectively reduce the temperature of this area.

[0024] Furthermore, when the water-cooled bent pipe 216 penetrates through the heat exchange hole 214, it also has a structural fixing effect. When the water-cooled bent pipe 216 passes through these heat exchange holes 214, the heat exchange holes 214 can restrict and support the water-cooled bent pipe 216. During the operation of the transformer body 1, vibrations and other situations are likely to occur. If the water-cooled bent pipe 216 is displaced due to vibration, the degree of fit between the water-cooled bent pipe 216 and the surface of the transformer body 1 will be affected, resulting in the coolant being unable to absorb the heat dissipated by the transformer body 1 evenly and effectively, thereby seriously affecting the water-cooling effect of the transformer body 1. By restricting the installation position of the water-cooled bent pipe 216 through the heat exchange holes 214, the situation of the water-cooled bent pipe 216 being displaced can be reduced, ensuring the stable heat dissipation of the transformer body 1.

[0025] Finally, the specific structure of the cooling mechanism 22 is disclosed. The cooling mechanism 22 includes a support cover plate 221 connected to the bottom of the transformer body 1. The other side of the support cover plate 221 is connected to the top of the water tank 211. A buffer chamber is formed between the support cover plate 221 and the water tank 211. Two cooling holes 225 are opened at the top of the inner cavity of the liquid storage chamber 33. Annular pipes 222 are fixedly installed at the openings on the side of the two cooling holes 225 close to the buffer chamber. An air-cooling machine 223 is arranged inside the two annular pipes 222.

[0026] Refer to Figure 8 and Figure 10 As shown, during the operation of the transformer body 1, driven by the waterproof motor, the two air-cooling machines 223 are started. When the air-cooling machines 223 are running, airflows are generated. These airflows enter the liquid storage chamber 33 through the cooling holes 225 opened at the top of the inner cavity of the liquid storage chamber 33. According to the principle of heat transfer, heat will transfer from the high-temperature coolant to the low-temperature air, which makes the internal temperature of the liquid storage chamber 33 drop. Thus, the temperature of the coolant is reduced, and further, the cooling capacity of the coolant for the transformer body 1 is improved, and the heat dissipation effect of the entire water-cooling system on the transformer body 1 is assisted and enhanced. Combined with Figure 9 , one end of the support cover plate 221 is connected to the bottom of the transformer body 1, and the other end is connected to the top of the water tank 211, so that a non-contact connection state is formed between the transformer body 1 and the water tank 211. As an isolation structure, the support cover plate 221 can effectively prevent the formation of an electric current conduction path and avoid potential safety hazards caused by the direct contact between the coolant and the transformer body 1. Furthermore, as shown in Figure 5 and Figure 9 , before the water-cooled bent pipe 216 near the heat dissipation fins 11 enters the inside of the water tank 211, it will pass through the buffer chamber formed between the support cover plate 221 and the water tank 211. The area near the heat dissipation fins 11 is the heat concentration area of the transformer body 1. The water-cooled bent pipe 216 absorbs a large amount of heat in this area and has a high temperature. When it passes through the buffer chamber, since the water-cooled bent pipe 216 is inserted into the side end part of the buffer chamber and is not in close contact with the position where the transformer body 1 generates heat, the air in the buffer chamber can cool the coolant passing through here to a certain extent. Although the thermal conductivity of air is not as good as that of the coolant, in this process, it can take away part of the heat of the water-cooled bent pipe 216, making its temperature between the high temperature near the heat dissipation fins 11 and the temperature of the coolant in the water tank 211. After the water-cooled bent pipe 216 is cooled by the buffer chamber, the temperature of the coolant inside it also decreases accordingly. When this part of the coolant enters the water tank 211, the temperature difference from the coolant in the water tank 211 decreases, and heat exchange can be carried out more smoothly, improving the stability and reliability of the entire water-cooling system.

[0027] During the process that the air-cooling machine 223 continuously blows air into the liquid storage cavity 33 to reduce the temperature of the coolant, the air in the buffer cavity needs to have a reasonable flow path to ensure the smoothness of air circulation. Therefore, two side discharge holes 224 are formed between the two ends of the support cover plate 221 and the surface of the water tank 211. The two side discharge holes 224 are communicated with the buffer cavity, and the openings of the two side discharge holes 224 face the water tank 211.

[0028] The improvement lies in: combined with Figure 9 , the openings of the two side discharge holes 224 face the water tank 211, that is, the openings face downward. From the perspective of air circulation, when the air-cooling machine 223 works and the air in the buffer cavity increases and the air pressure rises, the air can be smoothly discharged through the side discharge holes 224, ensuring the normal circulation of the air in the buffer cavity, enabling the air-cooling machine 223 to continuously and stably transport cold air to the liquid storage cavity 33, and guaranteeing the efficient progress of the coolant cooling work. From the perspective of dust prevention, the downward-facing opening design greatly reduces the possibility of dust entering the buffer cavity. In the natural environment, dust is mostly in an upward or horizontal floating state. With the side discharge holes 224 opening downward, it can effectively reduce the direct fall of dust into the buffer cavity, further improving the heat dissipation effect of the transformer body 1.

[0029] A connection port 41 is provided in the middle of the water-cooled elbow 216 away from the ends of the two heat dissipation fins 11, and the connection port 41 is located inside the liquid storage cavity 33. The end of the connection port 41 is hermetically connected to a support elbow 4, and the bottom of the support elbow 4 fits against the bottom of the liquid storage cavity 33.

[0030] The improvement lies in: when the coolant enters the liquid storage cavity 33 for heat exchange, it flows through the support elbow 4. The setting of the support elbow 4 changes the flow path of the coolant. The coolant that originally flowed rapidly in the water-cooled elbow 216, after entering the support elbow 4 through the connection port 41, due to the length and orientation of the support elbow 4, the time that the coolant flows through in the liquid storage cavity 33 increases. During this extended time, the coolant can more fully exchange heat with the coolant with a lower temperature in the liquid storage cavity 33, thereby improving the overall heat exchange effect; Moreover, the support elbow 4 fits against the bottom of the inner cavity of the liquid storage cavity 33, which enables the support elbow 4 to support the water-cooled elbow 216 from the bottom, sharing part of the gravity of the water-cooled elbow 216 and ensuring that the water-cooled elbow 216 can stably dissipate heat for the transformer. Among them, the support elbow 4 can be connected by means of sealed welding or integrally formed with the water-cooled elbow 216.

[0031] In order to ensure a relatively sealed effect between the liquid storage cavity 33 and the outside, therefore, inner gaskets 215 are installed inside multiple heat exchange holes 214, and the multiple inner gaskets 215 are all made of elastic materials.

[0032] From Figure 3 andFigure 4 It can be seen that internal pads 215 are installed inside multiple heat exchange holes 214. The internal pads 215 are made of elastic materials (such as rubber materials). The elastic internal pads 215 have good deformation ability. When the water-cooled elbow 216 passes through the heat exchange hole 214, the internal pad 215 will closely fit on the outer surface of the water-cooled elbow 216, filling the gap between the water-cooled elbow 216 and the heat exchange hole 214 to form a reliable sealing structure. In this way, the coolant cannot leak out from the gap, ensuring the normal circulation of the coolant in the water tank 211 and the cooling effect; In addition, the elastic internal pad 215 can play a buffering role. When installing the water-cooled elbow 216, the internal pad 215 can absorb and disperse the frictional force and impact force between the water-cooled elbow 216 and the inner wall of the heat exchange hole 214, thereby ensuring the stable operation of the entire water-cooling system.

[0033] The water-cooled elbow 216, the heat dissipation fins 11, and the support elbow 4 are all made of heat-conducting materials.

[0034] The improvement lies in that the water-cooled elbow 216, the heat dissipation fins 11, and the support elbow 4 are all made of heat-conducting and corrosion-resistant materials, such as copper and aluminum. They have high thermal conductivity. In common atmospheres and most industrial environments, the oxide film formed on the surface can prevent corrosion and are suitable for places requiring high-efficiency heat conduction.

[0035] Working principle: When water-cooling the transformer body 1, the coolant in the liquid storage cavity 33 is driven by the power provided by the water pump 32 and starts from the liquid storage cavity 33. Through the liquid outlet holes 34 opened on the inner wall of the liquid storage cavity 33, it continuously flows into the water-cooled elbow 216. The water-cooled elbow 216 closely fits on the surface of the transformer body 1. The coolant absorbs the heat dissipated by the transformer body 1 during the flow by means of heat conduction. At the same time, the heat dissipation fins 11 installed on both sides of the transformer body 1 work together with the water-cooled elbow 216, significantly improving the heat dissipation efficiency; Among them, the middle part of the water-cooled elbow 216 passes through the heat exchange hole 214 pre-opened on the surface of the water tank 211. Since the coolant in the water-cooled elbow 216 has absorbed heat on the surface of the transformer body 1, its temperature has increased significantly. In contrast, the coolant in the water tank 211 is in a relatively low-temperature state. Therefore, the high-temperature coolant in the water-cooled elbow 216 will transfer heat to the low-temperature coolant in the water tank 211 to reduce its own temperature. In the area close to the heat dissipation fins 11, due to the concentration of a large amount of heat, its temperature is much higher than other positions of the transformer body 1. In order to effectively reduce the temperature of this high-temperature area, the water-cooled elbow 216 at this position is designed to enter the water tank 211 at a significantly higher frequency than other positions. By this way of frequently exchanging heat and cooling with the low-temperature coolant in the water tank 211, the water-cooling heat dissipation effect on the transformer body 1 is further enhanced; Meanwhile, the air-cooling machine 223 operates driven by the waterproof motor, and the airflow generated by it will enter the liquid storage cavity 33 along the cooling holes 225, thereby realizing the cooling operation of the coolant and assisting in enhancing the overall water-cooling effect on the transformer body 1.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A water-cooled special transformer, which includes a transformer body (1). Radiating fins (11) are installed on both sides of the transformer body (1), and a cooling mechanism (2) is installed at the bottom of the transformer body (1); characterized in that: The cooling mechanism (2) includes a water-cooling mechanism (21) and a temperature-lowering mechanism (22); The water-cooling mechanism (21) includes a water tank (211). A water-cooling elbow pipe (216) is fitted on the surface of the transformer body (1), and the water-cooling elbow pipe (216) at the side end penetrates inside the radiating fins (11). The water-cooling elbow pipe (216) conveys the coolant in the water tank (211) to exchange heat with the transformer body (1) and the radiating fins (11); The temperature-lowering mechanism (22) is located between the water-cooling mechanism (21) and the transformer body (1) to insulate the transformer body (1) and buffer the temperature reduction in the area where the water-cooling elbow pipe (216) is close to the radiating fins (11); Among them, a plurality of heat exchange holes (214) are opened at the top of the water tank (211). The middle end of the water-cooling elbow pipe (216) passes through the heat exchange holes (214) and enters the inside of the water tank (211). When the coolant in the water-cooling elbow pipe (216) flows through the inside of the water tank (211), it can exchange heat with the coolant in the water tank (211). The number of heat exchange holes (214) near the two radiating fins (11) is more than the other two sides of the surface of the water tank (211); At the same time, the middle end of the water-cooling elbow pipe (216) can be assisted in positioning by means of the heat exchange holes (214).

2. The water-cooled special transformer according to claim 1, characterized in that: The water-cooling mechanism (21) further includes a mounting profile (212) installed at the side end of the water tank (211). A liquid-changing pipe (210) is arranged on the surface of the water tank (211), and a driving structure (213) is arranged inside the water tank (211). The driving structure (213) makes a double-layer structure formed inside the water tank (211).

3. The water-cooled special transformer according to claim 2, wherein: The driving structure (213) includes an inner plate (3). The inner plate (3) is a square frame structure. The inner plate (3) is fixedly installed inside the water tank (211). The inner plate (3) divides the inside of the water tank (211) into a driving chamber (31) and a liquid storage chamber (33).

4. The water-cooled special transformer according to claim 3, wherein: A water pump (32) is installed inside the driving chamber (31). One end of the water pump (32) is hermetically connected to a liquid outlet hole (34) opened on the inner wall of the liquid storage chamber (33). The other end of the water pump (32) is connected to the water-cooling elbow pipe (216). The water-cooling elbow pipe (216) is provided with a liquid inlet hole (35). The liquid inlet hole (35) is located inside the liquid storage chamber (33), and the position of the liquid inlet hole (35) inside the liquid storage chamber (33) is lower than that of the liquid outlet hole (34).

5. The water-cooled special transformer according to claim 4, wherein: The temperature reduction mechanism (22) includes a support cover plate (221) connected to the bottom of the transformer body (1), the other side of the support cover plate (221) is connected to the top of the water tank (211), a buffer cavity is formed between the support cover plate (221) and the water tank (211), two cooling holes (225) are opened at the top of the inner cavity of the liquid storage cavity (33), and annular pipes (222) are fixedly installed at the openings on the side of the two cooling holes (225) close to the buffer cavity, and an air cooler (223) is arranged inside the two annular pipes (222).

6. The water-cooled special transformer according to claim 5, wherein: Both ends of the support cover plate (221) form two side discharge holes (224) with the surface of the water tank (211), the two side discharge holes (224) are communicated with the buffer cavity, and the openings of the two side discharge holes (224) face the water tank (211).

7. The water-cooled special transformer according to claim 5, wherein: A connection port (41) is opened in the middle of the water-cooled elbow pipe (216) far from the two heat dissipation fins (11), and the connection port (41) is located inside the liquid storage cavity (33), the end of the connection port (41) is hermetically connected to a support elbow pipe (4), and the bottom of the support elbow pipe (4) is attached to the bottom of the liquid storage cavity (33).

8. The water-cooled special transformer according to claim 1, wherein: Inner pads (215) are installed inside the plurality of heat exchange holes (214), and the plurality of inner pads (215) are all made of elastic materials.

9. The water-cooled special transformer according to claim 7, characterized in that: The water-cooled elbow pipe (216), the heat dissipation fins (11) and the support elbow pipe (4) are all made of heat-conducting materials.

Images