Water-cooled oil-immersed transformer

Abstract

The utility model discloses a water-cooled oil-immersed transformer, and relates to the field of transformers. The transformer comprises a transformer body and cooling fins, a water cooling mechanism is arranged on the outer sides of the cooling fins, the water cooling mechanism comprises a plurality of water cooling plates, mounting grooves are formed between the adjacent water cooling plates, first spacing layers are attached to the inner sides of the mounting grooves, second spacing layers are arranged on the inner sides of the first spacing layers, and the second spacing layers are arranged on the inner sides of the second spacing layers. Heat accumulated on the cooling fins can be quickly conducted into cooling water through the high heat conduction performance of the water cooling mechanism and the heat conduction silica gel sheet, so that the heat dissipation efficiency of the transformer is improved, meanwhile, damage possibly caused by electrification of the surfaces of the transformer body and the cooling fins can be effectively avoided through the insulating material characteristic of the heat conduction silica gel sheet, and the service life of the transformer is prolonged. In addition, the water cooling mechanism is used in cooperation with the insulating layer, insulation isolation between the water cooling mechanism and the transformer body is further achieved, and more comprehensive protection is provided for the transformer body.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a water-cooled oil-immersed transformer. Background Art

[0002] Oil-immersed transformer is a voltage conversion device that uses oil cooling technology to reduce temperature. It is widely used in power transmission and distribution, industrial and commercial power supply. It achieves efficient cooling and good insulation through insulating oil, and has durability and high load capacity. However, it is necessary to regularly test the quality of insulating oil during use, take fire prevention measures to prevent flammable insulating oil from causing fire, and pay attention to leakage prevention to protect the environment. In short, oil-immersed transformer plays an important role in the power system with its efficient cooling and excellent insulation performance.

[0003] The Institute of Economic Inspection, application number: 202320128824.1, "A water-cooled oil-immersed transformer", records: The cooling water in the water tank flows through the outlet pipe and is sprayed onto the cooling fins from the nozzle. The cooling water flows along the cooling fins into the annular water receiving box, and then is pumped back into the water tank through the return pipe by the water pump to realize the circulation of cooling water. When the cooling water is sprayed onto the cooling fins, it will directly cool the cooling fins. At the same time, in the process of flowing on the cooling fins, the evaporation of cooling water will also take away some heat, thereby reducing the temperature of the cooling fins. However, there is a substantial problem in actual use. In actual application, the design faces a key problem: Since the transformer is a high-voltage electrical component, insulation failure, poor ground contact or operational errors may cause the transformer casing and the surface of the cooling fins to be charged. In this case, if the aforementioned water cooling system continues to be used, it may cause the transformer to short-circuit, thereby causing economic losses. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a water-cooled oil-immersed transformer to solve the technical problem that the existing transformer water cooling system has certain safety hazards.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooled oil-immersed transformer, comprising a transformer body and a heat sink, a water cooling mechanism is arranged on the outside of the heat sink, the water cooling mechanism comprises a plurality of water-cooling plates, mounting grooves are formed between adjacent water-cooling plates, a first spacer layer is attached to the inner side of the mounting groove, a second spacer layer is arranged on the inner side of the first spacer layer, a cavity is formed on the inner side of the second spacer layer, an insulating layer is arranged between the water-cooling plate and the transformer body, a guide cavity is opened inside the water-cooling plate, a shunt pipe is arranged on the top of the water-cooling plate, and a water collecting tank is arranged on the bottom of the water-cooling plate.

[0006] By adopting the above technical solution and using the thermally conductive silicone sheet as the material of the first spacer layer, it is beneficial to quickly transfer the heat accumulated on the heat sink to the cooling water. The efficient thermal conductivity of the thermally conductive silicone sheet ensures the rapid transfer of heat, thereby improving the heat dissipation efficiency.

[0007] Furthermore, a water outlet pipe is provided on one side of the water collecting tank, and the water outlet pipe is connected to an external liquid cooling device through a liquid pump.

[0008] By adopting the above technical solution, the water outlet pipe arranged on one side of the water collecting tank can effectively discharge the cooling water after absorbing heat through the water cooling mechanism, ensuring that the cooling water can flow out of the water cooling mechanism smoothly, avoiding the retention of cooling water inside the system, thereby ensuring the continuous and efficient operation of the cooling system.

[0009] Furthermore, a water tank is provided on one side of the diversion pipe through a liquid pump, and a water inlet pipe is provided on one side of the top of the water tank.

[0010] By adopting the above technical solution, it can be ensured that cooling water can be stably and continuously supplied to the water cooling mechanism. The liquid pump draws cooling water from the water tank and evenly distributes it to each water-cooled plate through the diversion pipe, thereby achieving comprehensive and effective heat dissipation. At the same time, the water inlet pipe arranged on the top side of the water tank allows cooling water to be easily added to the water tank, ensuring the continuous operation of the cooling system.

[0011] Furthermore, the water inlet pipe is connected to an external liquid cooling device, and the diverter pipe, the guide cavity and the water collecting tank are connected.

[0012] By adopting the above technical solution, it is ensured that the cooling water can be cooled promptly and effectively after absorbing heat through the water cooling mechanism. The external liquid cooling device can quickly reduce the temperature of the cooling water and maintain its good heat dissipation performance, thereby continuously providing efficient cooling effect for the transformer.

[0013] Furthermore, the first spacer layer is made of a thermally conductive silicone sheet, and the inner wall of the second spacer layer is in contact with the heat sink.

[0014] By adopting the above technical solution, the material of the first spacer layer is a thermally conductive silicone sheet, whose efficient thermal conductivity can quickly transfer the heat on the heat sink to the water cooling mechanism, which ensures the rapid transfer of heat and effectively prevents heat accumulation on the heat sink, thereby improving the heat dissipation efficiency and ensuring the stable operation of the transformer.

[0015] Furthermore, the water cooling mechanism is provided with two groups, which are respectively distributed on the front and rear sides of the transformer body.

[0016] By adopting the above technical solution, such a layout can effectively increase the heat dissipation area and improve the heat dissipation efficiency. The two sets of water cooling mechanisms can more comprehensively cover the transformer body, ensuring that the heat from each part can be taken away in time to prevent heat from accumulating locally.

[0017] Furthermore, the water cooling mechanism and the transformer body are in a plug-in and detachable structure.

[0018] By adopting the above technical solution, the installation and disassembly process is greatly facilitated, the operation steps are simplified, the work efficiency is improved, and it also provides convenience for subsequent maintenance and replacement.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The utility model uses a water cooling mechanism, and the high thermal conductivity of the thermally conductive silicone sheet is conducive to quickly transferring the heat accumulated on the heat sink to the cooling water, thereby improving the heat dissipation efficiency of the transformer. At the same time, the insulating material characteristics of the thermally conductive silicone sheet can effectively avoid the hazards that may be caused by the electrification of the transformer body and the surface of the heat sink, and significantly improve the safety of use. Furthermore, the use in conjunction with the insulating layer further realizes the insulation isolation between the water cooling mechanism and the transformer body, which not only enhances the safety of use, but also provides more comprehensive protection for the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the water cooling plate of the utility model;

[0023] Figure 3 It is a side view structural schematic diagram of the water cooling plate of the utility model;

[0024] Figure 4 For this utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0025] In the figure: 1. transformer body; 2. heat sink; 3. water cooling mechanism; 301. water cooling plate; 302. first spacer layer; 303. second spacer layer; 304. cavity; 305. flow guide cavity; 306. water collecting tank; 307. water outlet pipe; 308. insulation layer; 309. shunt pipe; 310. installation groove; 4. water storage tank; 5. water inlet pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0029] The following describes an embodiment of the utility model based on its overall structure.

[0030] Embodiment 1:

[0031] A water-cooled oil-immersed transformer, such as Figure 1-Figure 4As shown, it includes a transformer body 1 and a heat sink 2, a water cooling mechanism 3 is arranged on the outside of the heat sink 2, the water cooling mechanism 3 includes a plurality of water cooling plates 301, a mounting groove 310 is formed between adjacent water cooling plates 301, a first spacer layer 302 is attached to the inner side of the mounting groove 310, a second spacer layer 303 is arranged on the inner side of the first spacer layer 302, a cavity 304 is formed on the inner side of the second spacer layer 303, an insulating layer 308 is arranged between the water cooling plate 301 and the transformer body 1, a guide cavity 305 is opened inside the water cooling plate 301, a shunt pipe 309 is arranged on the top of the water cooling plate 301, and a cavity 304 is formed on the bottom of the water cooling plate 301. A water collecting tank 306 is provided, and a thermally conductive silicone sheet is used as the material of the first spacer layer 302, which is conducive to quickly transferring the heat accumulated on the heat sink 2 to the cooling water. The efficient thermal conductivity of the thermally conductive silicone sheet ensures the rapid transfer of heat, thereby improving the heat dissipation efficiency. At the same time, the insulating material characteristics of the thermally conductive silicone sheet effectively avoid the hazards that may be caused by the surface electrification of the transformer body 1 and the heat sink 2, thereby improving the safety of use. Together with the insulating layer 308, the water cooling mechanism 3 and the transformer body 1 are insulated and isolated, which not only further enhances the safety of use, but also provides more comprehensive protection for the transformer body 1.

[0032] See also Figure 1 , Figure 2 A water outlet pipe 307 is provided on one side of the water collecting tank 306, and the water outlet pipe 307 is connected to an external liquid cooling device through a liquid pump. The water outlet pipe 307 provided on one side of the water collecting tank 306 can effectively discharge the cooling water after absorbing heat through the water cooling mechanism 3, ensuring that the cooling water can flow out of the water cooling mechanism smoothly, avoiding the retention of cooling water inside the system, thereby ensuring the continuous and efficient operation of the cooling system. At the same time, the water outlet pipe 307 is connected to the external liquid cooling device through a liquid pump, realizing the recycling of cooling water and rapid heat dissipation. The liquid pump provides power, so that the cooling water can be continuously transported to the external liquid cooling device for cooling treatment, and then flow back to the water cooling mechanism to continue to absorb heat. This circulation method not only improves the cooling efficiency, but also saves water resources, making the entire water cooling system more environmentally friendly and efficient.

[0033] See also Figure 1A water tank 4 is provided on one side of the shunt pipe 309 through a liquid pump, and a water inlet pipe 5 is provided on the top side of the water tank 4, which can ensure that cooling water can be stably and continuously supplied to the water cooling mechanism 3. The liquid pump draws cooling water from the water tank 4 and evenly distributes it to each water-cooled plate 301 through the shunt pipe 309, thereby achieving comprehensive and effective heat dissipation. At the same time, the water inlet pipe 5 provided on the top side of the water tank 4 allows cooling water to be easily added to the water tank, ensuring the continuous operation of the cooling system. In addition, through the connection with the external cooling device, the water inlet pipe 5 also has the task of returning the cooled cooling water to the water tank 4, thereby maintaining the low temperature state of the cooling water and improving the heat dissipation effect.

[0034] See also Figure 1 , Figure 3 The water inlet pipe 5 is connected with the external liquid cooling device, the shunt pipe 309, the guide cavity 305 and the water collecting tank 306 are connected, ensuring that the cooling water can be cooled promptly and effectively after absorbing heat through the water cooling mechanism 3. The external liquid cooling device can quickly reduce the temperature of the cooling water and maintain its good heat dissipation performance, thereby continuously providing efficient cooling effect for the transformer. At the same time, the interconnected design of the shunt pipe 309, the guide cavity 305 and the water collecting tank 306 constitutes a complete cooling water circulation system. The shunt pipe 309 evenly distributes the cooling water to each water-cooled plate 301, the guide cavity 305 allows the cooling water to fully contact and absorb the heat generated by the transformer, and the water collecting tank 306 is responsible for collecting the cooling water after absorbing heat.

[0035] See also Figure 3 , Figure 4 The material of the first spacer layer 302 is a thermally conductive silicone sheet, and the inner wall of the second spacer layer 303 is in contact with the heat sink 2. The material of the first spacer layer 302 is a thermally conductive silicone sheet, and its efficient thermal conductivity can quickly transfer the heat on the heat sink 2 to the water cooling mechanism 3, which ensures the rapid transfer of heat and effectively prevents heat from accumulating on the heat sink 2, thereby improving the heat dissipation efficiency and ensuring the stable operation of the transformer. At the same time, the inner wall of the second spacer layer 303 is closely in contact with the heat sink 2, further enhancing the efficiency of heat transfer. By reducing the obstacles to heat transfer, the heat on the heat sink can be more smoothly transferred to the water cooling mechanism 3, and then carried away by the cooling water. This structure not only optimizes the heat dissipation path, but also effectively improves the performance of the overall heat dissipation system.

[0036] See also Figure 1 , Figure 2There are two groups of water cooling mechanisms 3, which are distributed on the front and rear sides of the transformer body 1 respectively. Such a layout can effectively increase the heat dissipation area and improve the heat dissipation efficiency. The two groups of water cooling mechanisms 3 can cover the transformer body 1 more comprehensively, ensuring that the heat of each part can be taken away in time to prevent heat from accumulating locally. At the same time, this distribution method also helps to maintain the temperature uniformity of the transformer body 1, avoiding the performance degradation or damage of the equipment due to local overheating. Through the dual heat dissipation guarantee on the front and rear sides, the service life of the transformer can be extended and the stability and reliability of its operation can be improved.

[0037] Embodiment 2:

[0038] See also Figure 1 , Figure 2 , Figure 4 The water-cooling mechanism 3 and the transformer body 1 are in a plug-in and detachable structure, which greatly facilitates the installation and disassembly process, simplifies the operation steps, improves work efficiency, and also provides convenience for later maintenance and replacement. At the same time, the plug-in and detachable structure also has good flexibility and scalability. When the water-cooling mechanism 3 needs to be upgraded or replaced, there is no need to make large-scale changes to the transformer body 1. It is only necessary to simply disassemble and replace the new water-cooling mechanism 3. This not only reduces the maintenance cost, but also reduces the impact on the transformer body caused by upgrading or repairing, thereby extending the service life of the transformer.

[0039] The implementation principle of the utility model is as follows: first, the cavity 304 is positioned opposite to the corresponding heat sink 2, and then the water cooling mechanism 3 and the transformer body 1 are installed by plugging. When the water cooling mechanism 3 is used to assist the heat dissipation of the heat sink 2, first, the cooling water inside the water storage tank 4 is transported to the inside of the shunt pipe 309 by a liquid pump, and then is shunted to the inside of each guide cavity 305 by the shunt pipe 309. At this time, the accumulated heat on the heat sink 2 is conducted to the inside of the guide cavity 305 through the second spacer layer 303 and the first spacer layer 302, and then is taken out of the guide cavity 305 by the flowing cooling water until it flows into the inside of the water collecting tank 306, which is conducive to the rapid and effective water cooling of the heat sink 2. After that, the cooling water is transported to the external liquid cooling device by a liquid pump to quickly dissipate the heat, and finally flows into the inside of the water storage tank 4 through the water inlet pipe 5 to complete the heat dissipation operation of the heat sink 2.

[0040] In this heat dissipation process, the first spacer layer 302 made of thermally conductive silicone sheet is used to quickly transfer the heat accumulated on the heat sink 2 to the cooling water, and cooperate with its insulating material properties to avoid further harm caused by the electrification of the transformer body 1 and the surface of the heat sink 2 during use, thereby improving its safety in use. At the same time, in cooperation with the insulating layer 308, the water cooling mechanism 3 is insulated and isolated from the transformer body 1, further improving its safety in use and the protection of the transformer body 1.

[0041] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0042] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A water-cooled oil-immersed transformer, characterized in that: The invention comprises a transformer body (1) and a heat sink (2), wherein a water cooling mechanism (3) is arranged on the outside of the heat sink (2), wherein the water cooling mechanism (3) comprises a plurality of water cooling plates (301), wherein mounting grooves (310) are formed between adjacent water cooling plates (301), wherein a first spacer layer (302) is attached to the inside of the mounting groove (310), wherein a second spacer layer (303) is arranged on the inside of the first spacer layer (302), wherein a cavity (304) is formed on the inside of the second spacer layer (303), wherein an insulating layer (308) is arranged between the water cooling plate (301) and the transformer body (1), wherein a flow guide cavity (305) is provided inside the water cooling plate (301), wherein a shunt pipe (309) is arranged on the top of the water cooling plate (301), and wherein a water collecting tank (306) is arranged on the bottom of the water cooling plate (301).

2. The water-cooled oil-immersed transformer according to claim 1, characterized in that: A water outlet pipe (307) is provided on one side of the water collecting tank (306), and the water outlet pipe (307) is connected to an external liquid cooling device through a liquid pump.

3. The water-cooled oil-immersed transformer according to claim 1, characterized in that: A water storage tank (4) is provided on one side of the diversion pipe (309) through a liquid pump, and a water inlet pipe (5) is provided on one side of the top of the water storage tank (4).

4. The water-cooled oil-immersed transformer according to claim 3, characterized in that: The water inlet pipe (5) is connected to an external liquid cooling device, and the diversion pipe (309), the flow guide cavity (305) and the water collecting tank (306) are connected.

5. The water-cooled oil-immersed transformer according to claim 1, characterized in that: The material of the first spacer layer (302) is a heat-conducting silicone sheet, and the inner wall of the second spacer layer (303) is in contact with the heat sink (2).

6. The water-cooled oil-immersed transformer according to claim 1, characterized in that: The water cooling mechanism (3) is provided in two groups, which are respectively distributed on the front and rear sides of the transformer body (1).

7. The water-cooled oil-immersed transformer according to claim 1, characterized in that: The water cooling mechanism (3) and the transformer body (1) are in a plug-in and detachable structure.

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