Water-cooled special transformer

Abstract

The present application relates to the technical field of special transformer, in particular to a water-cooled special transformer. It comprises a transformer body, the bottom of the transformer body is provided with a cooling mechanism, the top of the water tank is provided with a plurality of heat exchange holes, the middle end of the water-cooled bent pipe passes through the heat exchange holes and enters the inside of the water tank, when the cooling liquid in the water-cooled bent pipe flows through the inside of the water tank, it can exchange heat with the cooling liquid in the water tank, at the same time, the middle end of the water-cooled bent pipe can also be positioned by the heat exchange holes. By extending the middle end of the water-cooled bent pipe into the inside of the water tank, the cooling liquid in the water-cooled bent pipe which absorbs a large amount of heat can flow into the area of the water-cooled bent pipe immersed in the water tank intermittently, exchange heat with the cooling liquid in the water tank which has a relatively low temperature, and the temperature of the cooling liquid is effectively balanced after heat exchange, when the cooling liquid flows through the surface of the transformer again, it can keep stable and efficient water-cooled heat dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of special transformer technology, and more specifically, to a water-cooled special transformer. Background Technology

[0002] A transformer is a device that changes AC voltage based on the principle of electromagnetic induction. It consists of primary and secondary coils and an iron core. It can realize voltage and current transformation, impedance matching and electrical isolation. Special transformers are developed from ordinary transformers and are used for special purposes or specific conditions.

[0003] When a transformer is running, the copper losses in the windings and the iron losses in the core are converted into heat, causing the transformer temperature to rise. In the development of transformer heat dissipation technology, the traditional method of relying on external heat dissipation fins to dissipate heat from internal electrical components is no longer sufficient to meet heat dissipation requirements due to factors such as increased transformer power and more complex operating environments. Therefore, as shown in the patent with publication number CN115512935A, a water-cooled special transformer is provided with serpentine distributed heat-conducting copper pipes on both sides of the transformer body. Water is pumped from the water tank into the copper pipes to achieve water cooling. However, after the water flows from the water tank into the first heat-conducting copper pipe and exchanges heat with the transformer body, the water temperature in the heat-conducting pipe rises, causing the heat exchange efficiency with the transformer to decrease when it flows into subsequent heat-conducting copper pipes, thus affecting the heat dissipation effect of the transformer.

[0004] Therefore, in a water-cooled special transformer with patent number CN118538509B, after the heat-conducting copper tube cools one side of the transformer with water, the water flows from the pipe in the water tank to exchange heat with the water in the water tank, and after heat exchange, the water flows into the heat-conducting copper tube on the surface of the transformer on the other side.

[0005] Generally speaking, the heat dissipated from the surface of a transformer is relatively uniform. When using a heat-conducting copper pipe to cool one side of the transformer, the cooling water continuously absorbs the heat dissipated by the transformer as it flows from the beginning to the end of the copper pipe, and the temperature gradually rises. Since the heat dissipation effect is related to the temperature difference of the cooling water, the initial temperature difference between the cooling water and the transformer surface is large, resulting in fast heat dissipation and good effect. However, at the end, after the water temperature rises, the temperature difference between the water and the transformer surface decreases, the heat transfer efficiency decreases, and the heat dissipation effect deteriorates. This results in the transformer having good cooling at the front and poor cooling at the back on the same side, making it impossible to achieve uniform single-sided heat dissipation.

[0006] Therefore, there is an urgent need for a water-cooled special transformer to solve the above problems. Summary of the Invention

[0007] This invention provides a water-cooled special transformer, which optimizes the circulation path of the coolant on the transformer body surface through improvements to the water-cooling bend, thereby efficiently and uniformly absorbing heat during transformer operation, thus improving overall heat dissipation efficiency, ensuring stable transformer operation, and solving the problems mentioned in the background art above, namely:

[0008] The transformer exhibits a situation where the front section is well-cooled while the rear section is poorly cooled on the same side, making it impossible to achieve uniform single-sided heat dissipation.

[0009] To achieve the above objectives, the water-cooled special transformer includes a transformer body, on both sides of which heat dissipation fins are installed. The circuits of the transformer body are installed from the side, and a cooling mechanism is installed at the bottom of the transformer body.

[0010] The cooling mechanism includes a water cooling mechanism and a temperature reduction mechanism;

[0011] The water cooling mechanism includes a water tank, and a water cooling bend is attached to the surface of the transformer body. The water cooling bend at the side end is inserted into the interior of the heat dissipation fins. The water cooling bend delivers coolant from the water tank to exchange heat with the transformer body and the heat dissipation fins.

[0012] The cooling mechanism is located between the water cooling mechanism and the transformer body to achieve insulation of the transformer body and to provide cooling buffer for the area of ​​the water cooling bend near the heat dissipation fins.

[0013] The water tank has multiple heat exchange holes on its top. The middle end of the water-cooled bend passes through the heat exchange holes and enters the interior of the water tank. When the coolant in the water-cooled bend flows through the interior 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-cooled bend can also be positioned with the help of the heat exchange holes.

[0014] In the above technical solution, the transformer body is equipped with a cooling mechanism at the bottom, which includes a water-cooling mechanism and a cooling mechanism. The water-cooling mechanism exchanges heat through a water tank and a water-cooled bend, while the cooling mechanism achieves insulation and localized cooling. The water tank has heat exchange holes through which the water-cooled bend passes, thus forming a highly efficient heat dissipation system. This system has the functions of increasing the heat dissipation area, circulating the coolant for heat dissipation, and cooling key parts. When the transformer generates heat during operation, the heat dissipation fins and the water-cooled bend work together to dissipate heat. The coolant in the water-cooled bend exchanges heat and cools down through the water tank, ensuring the stability of the transformer body.

[0015] Based on this, the number of heat exchange holes near the two heat dissipation fins is greater than that on the other two sides of the water tank surface. The area near the heat dissipation fins is the heat concentration area of ​​the transformer body. More heat exchange holes allow more water-cooled bends to pass through here and frequently enter the water tank, accelerating the heat exchange between the high-temperature coolant and the low-temperature coolant in the water tank, enhancing the cooling effect around the heat dissipation fins, and effectively reducing the high temperature in this area.

[0016] Furthermore, a connection port is provided in the middle of the water-cooled bend tube away from the two heat dissipation fins, and the connection port is located inside the liquid storage cavity. The end of the connection port is sealed with a support bend tube, and the bottom of the support bend tube is attached to the bottom of the liquid storage cavity.

[0017] In this technical solution, by setting a connection port in the middle of the water-cooled bend far from the two heat dissipation fins and connecting it to a supporting bend, the structure and heat dissipation performance of the water-cooling system are optimized. Specifically, the flow path of the coolant is changed, and the supporting bend extends the flow time of the coolant in the reservoir, allowing the coolant more opportunities to exchange heat with the low-temperature coolant in the reservoir, thus improving the overall heat exchange effect. In addition, the bottom of the supporting bend is attached to the bottom of the reservoir, providing stable support for the water-cooled bend from below, effectively distributing the weight of the water-cooled bend, and greatly reducing the risk of displacement or deformation of the water-cooled bend caused by coolant flow impact and equipment vibration. This ensures that the water-cooled bend can always stably dissipate heat from the transformer, guaranteeing the long-term stable operation of the entire water-cooling system.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] During the operation of the transformer, the heat dissipation fins installed on both sides can help dissipate the heat generated by the transformer. During operation, the coolant in the water tank will circulate on the surface of the transformer through the water-cooled bend. The water-cooled bend is inserted between the two sets of heat dissipation fins. During the flow of coolant, it directly absorbs the heat dissipated by the transformer and performs water cooling on the heat dissipation fins. The dual heat dissipation mechanism improves the heat dissipation efficiency and enhances the heat dissipation efficiency of the transformer.

[0020] From the installation layout of the water-cooled bend, its middle part extends into the water tank. This allows the coolant, which has absorbed a large amount of heat, to intermittently flow into the water-cooled bend area immersed in the water tank, where it exchanges heat with the relatively cooler coolant in the water tank. After the heat exchange, the temperature of the coolant is effectively balanced, and when it flows over the transformer surface again, it can maintain a stable and efficient water cooling effect. It is particularly worth mentioning that the water-cooled bend near the heat dissipation fins enters the water tank for heat exchange more frequently than other locations. This allows the area near the heat source to receive more timely and sufficient cooling, further enhancing the overall heat dissipation efficiency of the transformer body.

[0021] In addition, the cooling mechanism located between the water cooling system and the transformer body can help reduce the temperature of the water tank, providing more favorable conditions for water cooling heat dissipation. Before entering the water tank for heat exchange, the water cooling bend near the heat dissipation fins will be cooled and buffered in the cooling mechanism, further improving the heat exchange effect on the coolant. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall side-rear structure of the present invention;

[0024] Figure 3 This is a cross-sectional view of the cooling mechanism according to an embodiment of the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at point A;

[0026] Figure 5 This is a sectional side view of the water tank according to an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional front view of the water tank according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the water-cooled bend and the drive structure according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the connection structure between the cooling mechanism and the water cooling mechanism in an embodiment of the present invention;

[0030] Figure 9 This is a sectional front view of the support cover plate according to an embodiment of the present invention;

[0031] Figure 10 This is a bottom view of the inside of the water tank according to an embodiment of the present invention.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Transformer body; 11. Heat dissipation fins;

[0034] 2. Cooling mechanism; 21. Water cooling mechanism; 22. Temperature reduction mechanism;

[0035] 210. Fluid exchange pipe; 211. Water tank; 212. Mounting profile; 213. Drive structure; 214. Heat exchange hole; 215. Inner gasket; 216. Water-cooled bend;

[0036] 221. Support cover plate; 222. Annular pipe; 223. Air cooler; 224. Side exhaust hole; 225. Cooling hole;

[0037] 3. Inner plate; 31. Drive chamber; 32. Water pump; 33. Liquid storage chamber; 34. Liquid outlet; 35. Liquid inlet;

[0038] 4. Support bend; 41. Connection port. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Currently, to address the problem of transformers exhibiting good cooling at the front and poor cooling at the rear on the same side, thus failing to achieve uniform unilateral heat dissipation, this invention provides a water-cooled special transformer. (See attached image.) Figures 1-3 As shown, heat dissipation fins 11 are installed on both sides of the transformer body 1 to increase the heat dissipation area and assist in heat dissipation. At the bottom of the transformer body 1, a cooling mechanism 2 is set up. This mechanism consists of a water cooling mechanism 21 and a cooling mechanism 22. The water cooling mechanism 21 has a water tank 211 as its core component. A water cooling bend 216 is tightly attached to the surface of the transformer body 1. The side water cooling bend 216 is cleverly inserted into the heat dissipation fins 11. The coolant in the water tank 211 circulates through the water cooling bend 216 to efficiently exchange heat with the transformer body 1 and the heat dissipation fins 11, and remove the heat generated by the transformer operation in a timely manner.

[0041] The cooling mechanism 22 is located between the water cooling mechanism 21 and the transformer body 1. On the one hand, it achieves insulation of the transformer body 1, effectively avoiding safety hazards caused by electrical faults; on the other hand, it provides cooling buffer for the area of ​​the water cooling bend 216 that is close to the heat dissipation fins 11 and has a high temperature, further optimizing the heat dissipation effect.

[0042] It is worth noting that multiple heat exchange holes 214 are provided on the top of the water tank 211. The middle end of the water-cooled bend 216 passes through these heat exchange holes 214 and enters the interior of the water tank 211. When the coolant in the water-cooled bend 216 flows through the interior of the water tank 211, it can exchange heat with the coolant inside the water tank 211, thus achieving its own cooling. At the same time, the middle end of the water-cooled bend 216 obtains an auxiliary positioning effect with the help of the heat exchange holes 214, improving the reliability and heat dissipation efficiency of the entire water cooling system.

[0043] During the operation of the transformer body 1, the heat dissipation fins 11 and the water cooling mechanism 21 work together to cool the transformer body 1. The specific structure of the water cooling mechanism 21 is disclosed below. The water cooling mechanism 21 also includes an installation profile 212 installed on the side of the water tank 211. The surface of the water tank 211 is provided with a liquid exchange pipe 210. The interior of the water tank 211 is provided with a drive structure 213, which makes the interior of the water tank 211 form a double-layer structure.

[0044] See Figure 2 and combined Figure 3As shown, the side of the water tank 211 is provided with an installation profile 212. This profile serves to stably support the water tank 211 and ensure its stability during operation. The surface of the water tank 211 is provided with a coolant replacement pipe 210. When the coolant needs to be replaced, the water cooling operation of the transformer body 1 is paused. Then, the sealing pipe inside the coolant replacement pipe 210 is separated from the coolant replacement pipe 210, and the coolant replacement operation can be performed. Deionized water can be used as the coolant, which can absorb a large amount of heat and has high heat dissipation efficiency. In addition, deionized water removes impurities such as minerals from the water, reducing the risk of electrical conductivity.

[0045] In the water-cooled structure, the coolant needs to circulate in the water-cooled bend 216 through the drive structure 213. The specific structure of the drive structure 213 is disclosed below. The drive structure 213 includes an inner plate 3, which is a square frame structure. The inner plate 3 is fixedly installed inside the water tank 211. The inner plate 3 divides the interior of the water tank 211 into a drive chamber 31 and a liquid storage chamber 33.

[0046] A water pump 32 is installed inside the drive cavity 31. One end of the water pump 32 is sealed to the outlet hole 34 opened on the inner wall of the liquid storage cavity 33. The other end of the water pump 32 is connected to the water-cooled bend 216. The water-cooled bend 216 has an inlet hole 35. The inlet hole 35 is located inside the liquid storage cavity 33. The position of the inlet hole 35 inside the liquid storage cavity 33 is lower than that of the outlet hole 34.

[0047] like Figure 3 As can be seen, the water pump 32 is installed inside the drive chamber 31 (the water pump 32 can be wireless or externally powered). When the water pump 32 is running, its internal motor works continuously and generates heat. Inside the drive chamber 31, a heat dissipation hole is provided at the bottom of the water pump 32 installation position, allowing the hot air generated by the water pump 32 to be discharged naturally through the hole. At the same time, the inner plate 3 forms a double-layer structure inside the water tank 211. The double-layer structure design plays a good role in heat insulation, effectively blocking the transfer of heat, making it difficult for 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 without affecting the temperature of the liquid storage chamber 33. Moreover, the heat dissipation hole is opened in a specific area (i.e., at the bottom of the installation position of the water pump 32), so it will not affect the heat preservation effect of the water tank 211.

[0048] In addition, the water tank 211 is located at the bottom of the transformer body 1 and close to the ground. Under normal circumstances, the air flow near the ground is relatively slow and less affected by factors such as solar radiation. The temperature is relatively low and does not fluctuate much, which can further help maintain the temperature of the coolant in the liquid storage chamber 33, so that the coolant is always in a temperature range that is conducive to heat dissipation.

[0049] At the same time, combined Figure 5 It can be seen that the water tank 211 is designed with a double-layer structure. Compared with the single-layer structure, its material usage is increased and the structure is more robust. In terms of mechanical performance, the double-layer structure can better distribute and bear the gravity applied 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 to the water tank 211 caused by long-term excessive pressure, providing a reliable support foundation for the stable operation of the transformer body 1.

[0050] In liquids, according to the principle of convection, liquids with higher temperatures and lower densities rise, while liquids with lower temperatures and higher densities flow downwards. In the storage chamber 33, the coolant's temperature rises after absorbing heat from the transformer. The hotter coolant gradually accumulates in the lower layer, while the relatively cooler coolant remains in the upper layer. The outlet 34, which supplies the coolant to the water-cooled bend 216, is positioned at a high level. Figure 6 As shown, when the water pump 32 is working, it will preferentially draw the coolant with a lower temperature from the upper layer of the liquid storage chamber 33. This low-temperature coolant enters the water pump 32 through the liquid outlet 34 and is then transported to the water-cooled bend 216. Since the coolant entering the water-cooled bend 216 has a lower temperature, the temperature difference between it and the transformer body 1 is larger, which can more efficiently absorb the heat generated by the transformer operation, thereby improving the heat dissipation efficiency of the water cooling system.

[0051] Furthermore, as shown in patent CN221861409U, the water tank 211 in this embodiment is also installed at the bottom of the transformer body 1. When the water tank 211 is installed at the bottom of the transformer body 1, the wiring connections of the transformer body 1 are typically made using a side-connection method. Figure 2 The wiring is connected through pipes installed on the surface of the transformer body 1. The wiring is installed inside the pipes, which allows maintenance personnel to quickly locate the problem when a fault occurs, facilitating troubleshooting and repair. On the other hand, the pipes themselves have good insulation properties, which can effectively prevent leakage from causing safety hazards to surrounding equipment and personnel. It should be noted that the pipe dimensions shown in the attached figure are for illustration only. In actual engineering applications, the specific dimensions of the pipes need to be determined in accordance with relevant electrical standards to ensure the safety and reliability of the entire system.

[0052] The number of heat exchange holes 214 near the two heat dissipation fins 11 is greater than that on the other two sides of the surface of the water tank 211.

[0053] The improvement lies in the following: When the coolant, driven by the water pump 32, is drawn into the water-cooled bend 216 from the outlet 34 on the inner wall of the reservoir 33, it can then combine with the water-cooled bend 216 to dissipate heat from the transformer body 1. The water-cooled bend 216 is in contact with the surface of the transformer body 1, and the coolant, during its flow, continuously absorbs the heat generated by the transformer body 1 during operation through heat conduction, achieving a heat exchange effect. Figure 7 As shown, the water-cooled bend 216 surrounds the transformer body 1. When dissipating heat on one side of the transformer body 1, the water-cooled bend 216 passes through the heat exchange holes 214 on the surface of the water tank 211 and enters the water tank 211. At this time, since the coolant has already exchanged heat with the transformer body 1, 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, its lower temperature allows it to absorb the heat emitted by the transformer body 1 more efficiently. This cycle repeats, which to a certain extent balances the heat dissipation effect on the surface of the transformer body 1, reduces the occurrence of local overheating, and ensures its stable operation.

[0054] 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 concentrates a large amount of heat, and its temperature is relatively higher than other parts of the transformer body 1. In order to effectively reduce the temperature of this high-temperature area, combined with... Figure 5 and Figure 7 As shown, the water-cooled bend 216 near the heat dissipation fins 11 is designed to enter the water tank 211 more frequently than other locations. When the water-cooled bend 216 frequently passes through the heat exchange hole 214 into the water tank 211, the coolant with a higher temperature inside the pipe can exchange heat with the low-temperature coolant in the water tank 211 more promptly. 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 in that area.

[0055] Furthermore, the water-cooled bend 216, which passes through the heat exchange holes 214, also serves a structural fixing function. When the water-cooled bend 216 passes through these heat exchange holes 214, the heat exchange holes 214 can restrict and support the water-cooled bend 216. During the operation of the transformer body 1, vibrations are likely to occur. If the water-cooled bend 216 is displaced due to vibration, the degree of contact between the water-cooled bend 216 and the surface of the transformer body 1 will be affected, causing the coolant to be unable to absorb the heat dissipated by the transformer body 1 evenly and effectively, thus seriously affecting the water cooling effect on the transformer body 1. By restricting the installation position of the water-cooled bend 216 through the heat exchange holes 214, the displacement of the water-cooled bend 216 can be reduced, ensuring stable heat dissipation of the transformer body 1.

[0056] 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 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. An annular pipe 222 is fixedly installed at the opening of the two cooling holes 225 near the buffer cavity. An air cooler 223 is installed inside the two annular pipes 222.

[0057] See Figure 8 and Figure 10 As shown, during the operation of the transformer body 1, the two air coolers 223 are started by the waterproof motor. When the air coolers 223 are running, they will generate airflow. This airflow enters 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 be transferred from the high temperature of the coolant to the low temperature of the air, which will cause the internal temperature of the liquid storage chamber 33 to drop. In this way, the temperature of the coolant is reduced, thereby improving the cooling capacity of the coolant for the transformer body 1 and enhancing the heat dissipation effect of the entire water cooling system on the transformer body 1.

[0058] Combination Figure 9 One end of the support cover 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 the transformer body 1 and the water tank 211 form a non-fitted connection. As an isolation structure, the support cover 221 can effectively prevent the formation of current conduction path and avoid the safety hazards caused by direct contact between coolant and transformer body 1.

[0059] Furthermore, through Figure 5 and Figure 9As shown, the water-cooled bend 216 near the heat dissipation fins 11 passes through a buffer cavity formed between the support cover 221 and the water tank 211 before entering the water tank 211. The area near the heat dissipation fins 11 is a concentrated heat region of the transformer body 1, where the water-cooled bend 216 absorbs a large amount of heat and reaches a high temperature. When it passes through the buffer cavity, because the water-cooled bend 216 is inserted at the side end of the buffer cavity and is not in close contact with the heat-generating part of the transformer body 1, the air inside the buffer cavity can dissipate the heat passing through this area. The coolant provides a certain degree of cooling. Although air has lower thermal conductivity than coolant, it can still carry away some heat from the water-cooled bend 216 during this process, keeping its temperature between the high temperature near the heat dissipation fins 11 and the temperature of the coolant in the water tank 211. After being cooled by the buffer chamber, the temperature of the coolant inside the water-cooled bend 216 also decreases accordingly. When this part of the coolant enters the water tank 211, the temperature difference between it and the coolant inside the water tank 211 decreases, allowing for more stable heat exchange and improving the stability and reliability of the entire water cooling system.

[0060] During the process of the air cooler 223 continuously blowing air into the liquid storage chamber 33 to reduce the temperature of the coolant, the air in the buffer chamber needs to have a reasonable flow path to ensure smooth air circulation. Therefore, the two ends of the support cover plate 221 and the surface of the water tank 211 form two side drain holes 224. The two side drain holes 224 are connected to the buffer chamber, and the openings of the two side drain holes 224 face the water tank 211.

[0061] The improvement lies in: combination Figure 9 The openings of the two side exhaust holes 224 face the water tank 211, i.e., downwards. From the perspective of air circulation, when the air cooler 223 operates, increasing the air volume and air pressure in the buffer chamber, the air can be smoothly discharged through the side exhaust holes 224, ensuring normal air circulation in the buffer chamber. This allows the air cooler 223 to continuously and stably supply cold air to the liquid storage chamber 33, ensuring efficient cooling of the coolant. From the perspective of dust prevention, the downward-facing design greatly reduces the possibility of dust entering the buffer chamber. In the natural environment, dust tends to rise or drift horizontally. The downward-facing openings of the side exhaust holes 224 effectively reduce the direct fall of dust into the buffer chamber, further improving the heat dissipation effect on the transformer body 1.

[0062] A connection port 41 is provided in the middle of the water-cooled bend 216 away from the two heat dissipation fins 11, and the connection port 41 is located inside the liquid storage chamber 33. The end of the connection port 41 is sealed with a support bend 4, and the bottom of the support bend 4 is attached to the bottom of the liquid storage chamber 33.

[0063] The improvement lies in the following: When the coolant enters the reservoir 33 for heat exchange, it flows through the support bend 4. The setting of the support bend 4 changes the flow path of the coolant. The coolant, which originally flowed rapidly directly in the water-cooled bend 216, enters the support bend 4 through the connection port 41. Due to the length and direction of the support bend 4, the coolant spends more time flowing through the reservoir 33. During this extended period, the coolant can more fully exchange heat with the coolant in the reservoir 33, which has a lower temperature, thereby improving the overall heat exchange effect.

[0064] Furthermore, the support bend 4 is attached to the bottom of the inner cavity of the liquid storage chamber 33, which allows the support bend 4 to support the water-cooled bend 216 from the bottom, sharing part of the weight of the water-cooled bend 216 and ensuring that the water-cooled bend 216 can stably dissipate heat from the transformer. The support bend 4 can be made by sealed welding or integrally formed with the water-cooled bend 216.

[0065] To ensure a relatively sealed relationship between the liquid storage chamber 33 and the outside, an inner gasket 215 is installed inside each of the multiple heat exchange holes 214, and all the inner gaskets 215 are made of elastic material.

[0066] from Figure 3 and Figure 4 As can be seen, each of the multiple heat exchange holes 214 has an inner gasket 215 installed inside. The inner gasket 215 is made of an elastic material (such as rubber). The elastic material of the inner gasket 215 has good deformation ability. When the water-cooled bend 216 passes through the heat exchange hole 214, the inner gasket 215 will fit tightly against the outer surface of the water-cooled bend 216, filling the gap between the water-cooled bend 216 and the heat exchange hole 214, forming a reliable sealing structure. In this way, the coolant cannot leak out from the gap, ensuring the normal circulation and cooling effect of the coolant in the water tank 211.

[0067] In addition, the elastic inner pad 215 can act as a buffer. When installing the water-cooled bend 216, the inner pad 215 can absorb and disperse the friction and impact between the water-cooled bend 216 and the inner wall of the heat exchange hole 214, thereby ensuring the stable operation of the entire water-cooling system.

[0068] The water-cooled bend 216, the heat dissipation fins 11, and the support bend 4 are all made of thermally conductive materials.

[0069] The improvements are as follows: the water-cooled bend 216, the heat dissipation fins 11, and the supporting bend 4 are all made of thermally conductive and corrosion-resistant materials, such as copper and aluminum. They have high thermal conductivity, and the oxide film formed on their surface provides corrosion protection in common atmospheric and most industrial environments, making them suitable for applications requiring efficient heat conduction.

[0070] Working principle:

[0071] When water cooling is applied to the transformer body 1, the coolant in the storage chamber 33 is driven by the power provided by the water pump 32, flows from the storage chamber 33 through the outlet hole 34 on the inner wall of the storage chamber 33, and flows continuously into the water cooling bend 216. The water cooling bend 216 is tightly attached to the surface of the transformer body 1. The coolant absorbs the heat emitted by the transformer body 1 during the flow process 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 cooling bend 216 to significantly improve the heat dissipation efficiency.

[0072] The water-cooled bend 216 passes through the heat exchange hole 214 pre-drilled on the surface of the water tank 211. Since the coolant in the water-cooled bend 216 has already 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 at a relatively low temperature. Therefore, the high-temperature coolant in the water-cooled bend 216 will transfer heat to the low-temperature coolant in the water tank 211, thereby reducing its own temperature. The area near the heat dissipation fins 11 has a much higher temperature than other parts of the transformer body 1 due to the concentration of a large amount of heat. In order to effectively reduce the temperature of this high-temperature area, the water-cooled bend 216 at this location is designed to enter the water tank 211 at a significantly higher frequency than other locations. Through this frequent heat exchange with the low-temperature coolant in the water tank 211, the water cooling effect on the transformer body 1 is further enhanced.

[0073] Meanwhile, the air cooler 223 operates under the drive of the waterproof motor, and the airflow it generates enters the liquid storage chamber 33 along the cooling hole 225, thereby achieving the cooling operation of the coolant and helping to improve the overall water cooling effect of the transformer body 1.

[0074] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-cooled special transformer, comprising a transformer body (1), wherein heat dissipation 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 reduction mechanism (22); The water cooling mechanism (21) includes a water tank (211), and a water cooling bend (216) is attached to the surface of the transformer body (1). The water cooling bend (216) at the side end is inserted into the interior of the heat dissipation fins (11). The water cooling bend (216) transports the coolant in the water tank (211) to exchange heat between the transformer body (1) and the heat dissipation fins (11). The cooling mechanism (22) is located between the water cooling mechanism (21) and the transformer body (1) to achieve insulation of the transformer body (1) and to provide cooling buffer for the area of ​​the water cooling bend (216) near the heat dissipation fins (11). The water tank (211) has multiple heat exchange holes (214) on its top. The middle end of the water-cooled bend (216) passes through the heat exchange holes (214) and enters the interior of the water tank (211). When the coolant in the water-cooled bend (216) flows through the interior of the water tank (211), it can exchange heat with the coolant in the water tank (211). At the same time, the middle end of the water-cooled bend (216) can be positioned with the help of the heat exchange holes (214). The number of heat exchange holes (214) near the two heat dissipation fins (11) is greater than that on the other two sides of the surface of the water tank (211); The cooling mechanism (22) includes a support cover plate (221) connected to the bottom of the transformer body (1), and the other side of the support cover plate (221) is connected to the top of the water tank (211). The water tank (211) is provided with a drive structure (213) inside. The drive 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 drive chamber (31) and a liquid storage chamber (33). 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). A ring pipe (222) is fixedly installed at the opening of the two cooling holes (225) near the buffer chamber. An air cooler (223) is installed inside the two ring pipes (222).

2. The water-cooled special transformer according to claim 1, characterized in that: The water cooling mechanism (21) also includes an installation profile (212) installed on the side of the water tank (211), and a liquid exchange pipe (210) is provided on the surface of the water tank (211). The drive structure (213) forms a double-layer structure inside the water tank (211).

3. The water-cooled special transformer according to claim 1, characterized in that: A water pump (32) is installed inside the drive cavity (31). One end of the water pump (32) is sealed to the outlet hole (34) opened on the inner wall of the liquid storage cavity (33). The other end of the water pump (32) is connected to the water-cooled bend (216). The water-cooled bend (216) is provided with an inlet hole (35). The inlet hole (35) is located inside the liquid storage cavity (33). The position of the inlet hole (35) inside the liquid storage cavity (33) is lower than that of the outlet hole (34).

4. The water-cooled special transformer according to claim 1, characterized in that: The two ends of the support cover plate (221) form two side drain holes (224) with the surface of the water tank (211). The two side drain holes (224) are connected to the buffer cavity, and the openings of the two side drain holes (224) face the water tank (211).

5. The water-cooled special transformer according to claim 1, characterized in that: A connection port (41) is provided in the middle of the water-cooled bend (216) away 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 sealed with a support bend (4), and the bottom of the support bend (4) is attached to the bottom of the liquid storage cavity (33).

6. The water-cooled special transformer according to claim 1, characterized in that: Each of the heat exchange holes (214) is fitted with an inner pad (215), and the inner pads (215) are all made of elastic material.

7. The water-cooled special transformer according to claim 6, characterized in that: The water-cooled bend (216), heat dissipation fins (11), and support bend (4) are all made of thermally conductive materials.

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