Transformer oil tank structure with multiple heat exchange modes

Abstract

The utility model discloses a transformer oil tank structure with multiple heat exchange modes, and relates to the technical field of transformer cooling. The device structurally comprises a shell, a box cover, a plurality of U-shaped pipes, a buffer tank and a circulating pump, a heat exchange box body extending downwards is arranged in the center of the lower end of the shell; supporting channel steel is fixed to the lower end of the shell and located on the two sides of the heat exchange box respectively; the circulating pump is mounted on one supporting channel steel; an S-shaped coil pipe is fixed between the left wall and the right wall of the heat exchange box body in a penetrating mode. Geothermal cooling is carried out through the U-shaped pipes buried underground, heat exchange is carried out through the low temperature and stability of underground soil, the operation temperature of the transformer is effectively reduced, and the cooling efficiency is improved. The geothermal cooling mode does not need additional refrigeration equipment, only a circulating pump is needed to drive cooling liquid to circulate, and operation energy consumption is low. And the underground soil temperature is relatively stable and is slightly influenced by the external environment, so that the geothermal cooling effect is stable and reliable, and the transformer can normally operate under various environmental conditions.

Description

Technical Field

[0001] This utility model belongs to the field of transformer cooling technology, and in particular relates to a transformer oil tank structure with multiple heat exchange methods. Background Technology

[0002] In power transmission and distribution systems, transformers are critical equipment, and the stability of their operating temperature directly affects the safety and reliability of the entire power system. However, in areas with high air temperatures, traditional air-cooling methods are often insufficient to meet the cooling requirements of transformers. Especially under conditions of high summer temperatures or continuous high load operation, the heat generated inside the transformer cannot be effectively dissipated through air cooling, leading to excessively high transformer operating temperatures, which in turn affects its service life and performance.

[0003] To address this issue, some transformer cooling systems employing water cooling or other cooling methods have emerged on the market. However, these systems often suffer from high energy consumption, complex structures, and high maintenance costs. The application of water cooling systems is particularly limited in areas with scarce water resources or tight power supplies.

[0004] Therefore, developing a high-efficiency, low-energy-consumption, stable, and reliable transformer heat dissipation system is of significant practical importance. This invention addresses this need by proposing a transformer tank structure with multiple heat exchange methods. Utility Model Content

[0005] The purpose of this invention is to provide a transformer tank structure with multiple heat exchange methods. By utilizing the low temperature and stability of the underground soil for heat exchange, it achieves efficient cooling of the transformer, while reducing operating energy consumption and improving the stability and reliability of the system.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a transformer tank structure with multiple heat exchange methods, including a shell, a tank cover, multiple U-shaped tubes, a buffer tank, and a circulating pump. A downwardly extending heat exchange chamber is located at the center of the lower end of the shell. A supporting channel steel is fixed to each side of the heat exchange chamber at the lower end of the shell. The circulating pump is mounted on one of the supporting channel steels. An S-shaped coil is fixed through the left and right walls of the heat exchange chamber. Multiple U-shaped tubes are buried underground and connected in series via ground-connected pipes. The inlet of the circulating pump is connected to the outlet of the series-connected U-shaped tubes via a first pipe. The outlet of the circulating pump is connected to one end of the S-shaped coil. The other end of the S-shaped coil is connected to the buffer tank via a second pipe. The buffer tank is connected to the inlet of the series-connected U-shaped tubes via a third pipe.

[0008] As a preferred embodiment of this utility model, the front and rear outer walls of the shell are respectively provided with a plurality of first heat dissipation fins.

[0009] As a preferred embodiment of this utility model, a plurality of second heat dissipation fins are respectively provided on the left and right outer walls of the housing; a fan mounting bracket is respectively provided on the left and right outer walls of the housing; and an axial flow fan is installed on the fan mounting bracket.

[0010] As a preferred embodiment of this utility model, heat-insulating sleeves are respectively installed on the outside of the ground connecting pipe, the outside of the first pipe, the outside of the second pipe and the outside of the third pipe.

[0011] As a preferred embodiment of this utility model, the outer wall of the buffer tank is provided with several heat dissipation plates.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model utilizes geothermal cooling through U-shaped pipes buried underground. It leverages the low temperature and stability of the underground soil for heat exchange, effectively reducing the transformer's operating temperature and improving cooling efficiency. Geothermal cooling requires no additional refrigeration equipment; only a circulating pump drives the coolant circulation. Compared to traditional air-cooled or water-cooled systems, its energy consumption is significantly reduced. The relatively stable temperature of the underground soil, less affected by the external environment, ensures stable and reliable geothermal cooling, guaranteeing the transformer's normal operation under various environmental conditions.

[0014] 2. The front and rear outer walls of the housing of this utility model are provided with first heat dissipation long fins, the left and right outer walls are provided with second heat dissipation long fins, and axial flow fans are installed on the left and right outer walls. These designs enhance the natural heat dissipation effect of the transformer, especially under extreme high temperature conditions, and can assist the geothermal cooling system to further improve the cooling efficiency.

[0015] 3. In this invention, the coolant forms a closed-loop circulation between the underground U-shaped pipe, S-shaped coil, and buffer tank, realizing the recycling of coolant, reducing resource waste, and conforming to the concept of energy conservation and environmental protection.

[0016] 4. This utility model has a compact structure and reasonable design. It combines the geothermal cooling system with the transformer tank structure, which not only ensures the normal operation of the transformer, but also improves its heat dissipation performance. It has strong practicality and promotion value.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the transformer oil tank with multiple heat exchange methods according to this utility model.

[0020] Figure 2 This is a schematic diagram of the shell and the S-shaped coil.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1-Shell, 2-Case cover, 3-U-shaped tube, 4-Buffer tank, 5-Circulating pump, 6-S-shaped coil, 7-Ground connection pipe, 8-First pipe, 9-Second pipe, 10-Third pipe, 101-Heat exchange box, 102-Supporting channel steel, 103-First heat dissipation fin, 104-Second heat dissipation fin, 105-Fan mounting bracket, 11-Axial flow fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1:

[0025] Please see Figure 1-2 As shown, in areas with high air temperatures, traditional air-cooling methods often fail to meet the cooling requirements of transformers, leading to excessively high operating temperatures and affecting their service life and performance. Therefore, this embodiment provides a transformer tank structure with multiple heat exchange methods, including a shell 1, a tank cover 2, multiple U-shaped pipes 3, a buffer tank 4, and a circulating pump 5. The buffer tank 4 is filled with coolant. A downwardly extending heat exchange box 101 is located at the lower center of the shell 1. A supporting channel steel 102 is fixed on each side of the heat exchange box 101 at the lower end of the shell 1.

[0026] The circulating pump 5 is installed on one of the supporting channel steels 102. An S-shaped coil 6 is fixed through the left and right walls of the heat exchange box 101. When the coolant flows in it, it exchanges heat with the transformer oil to achieve cooling. U-shaped pipes 3 are installed underground through holes in the ground. Multiple U-shaped pipes 3 are buried underground. The low temperature and stability of the underground soil are used for heat exchange. Multiple U-shaped pipes 3 are connected in series through ground connecting pipes 7. The water inlet of the circulating pump 5 is connected to the water outlet of multiple U-shaped pipes 3 connected in series through the first pipe 8. The water outlet of the circulating pump 5 is connected to one end of the S-shaped coil 6. The other end of the S-shaped coil 6 is connected to the buffer tank 4 through the second pipe 9. The water inlet of the buffer tank 4 and the multiple U-shaped pipes 3 connected in series are connected through the third pipe 10. Multiple U-shaped pipes are connected in series through ground connecting pipes 7 to form a geothermal cooling circuit. The circulating pump 5 is used to drive the coolant to circulate between the geothermal cooling circuit and the S-shaped coil (6).

[0027] The shell 1 provides natural heat dissipation by having several first heat dissipation fins 103 on its front and rear outer walls. The shell 1 also provides enhanced heat dissipation by having several second heat dissipation fins 104 on its left and right outer walls. Fan mounting brackets 105 are provided on the left and right outer walls of the shell 1. An axial flow fan 11 is mounted on the fan mounting bracket 105 to enhance the natural heat dissipation effect.

[0028] Among them, insulation sleeves are installed on the outside of ground connection pipe 7, the outside of first pipe 8, the outside of second pipe 9 and third pipe 10 respectively.

[0029] The outer wall of the buffer tank 4 is equipped with several heat dissipation plates. These plates are used to temporarily store and further dissipate the geothermal-cooled coolant.

[0030] Working principle of transformer oil tank structure with multiple heat exchange methods:

[0031] 1) Geothermal Cooling Stage: Circulating pump 5 starts, drawing coolant from underground U-shaped pipe 3 and sending it through first pipe 8 into S-shaped coil 6. In S-shaped coil 6, the coolant exchanges heat with transformer oil, absorbing the heat generated by the transformer. Utilizing the low temperature and stability of the underground soil for heat exchange effectively reduces the transformer's operating temperature.

[0032] 2) Heat Exchange and Dissipation: After absorbing heat, the coolant flows into the buffer tank 4 through the second pipe 9, where it further dissipates heat, and the heat dissipation effect is enhanced by the heat dissipation plates on its outer wall. Geothermal cooling requires no additional refrigeration equipment; only a circulating pump drives the coolant circulation, resulting in low energy consumption. The underground soil temperature is relatively stable and less affected by the external environment, ensuring stable and reliable cooling. The absence of chemical refrigerants reduces environmental pollution and aligns with the trend of green and energy-saving development.

[0033] 3) Circulation: The cooled liquid that has been cooled back to the underground U-shaped pipe 3 through the third pipe 10 to continue geothermal cooling, forming a closed loop circulation.

[0034] 4) Auxiliary heat dissipation: Under extreme high temperature conditions, the axial flow fan 11 can be activated to enhance airflow on the surface of the casing 1 and improve the efficiency of natural heat dissipation.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A transformer tank structure with multiple heat exchange methods, comprising a shell (1) and a tank cover (2), characterized in that: It also includes multiple U-shaped tubes (3), a buffer tank (4), and a circulation pump (5); The lower end of the shell (1) is provided with a downwardly extending heat exchange box (101); a support channel steel (102) is fixed on both sides of the heat exchange box (101) at the lower end of the shell (1); the circulating pump (5) is installed on one of the support channel steels (102); An S-shaped coil (6) is fixed through the left and right walls of the heat exchange box (101). Multiple U-shaped pipes (3) are buried underground; multiple U-shaped pipes (3) are connected in series by ground connecting pipes (7); the inlet of the circulation pump (5) is connected to the outlet of multiple U-shaped pipes (3) in series through a first pipe (8); the outlet of the circulation pump (5) is connected to one end of the S-shaped coil (6); the other end of the S-shaped coil (6) is connected to the buffer tank (4) through a second pipe (9); the buffer tank (4) is connected to the inlet of multiple U-shaped pipes (3) in series through a third pipe (10).

2. The transformer tank structure with multiple heat exchange methods according to claim 1, characterized in that, The outer walls of the shell (1) are respectively provided with a number of first heat dissipation long fins (103).

3. The multi-recovery transformer oil tank structure according to claim 1, characterized by The shell (1) has several second heat dissipation fins (104) on its left and right outer walls respectively; the shell (1) has fan mounting brackets (105) on its left and right outer walls respectively; and an axial flow fan (11) is mounted on the fan mounting brackets (105).

4. The transformer tank structure with multiple heat exchange methods according to claim 1, characterized in that, Insulation sleeves are installed on the outside of the ground connection pipe (7), the outside of the first pipe (8), the outside of the second pipe (9), and the outside of the third pipe (10).

5. The multi-recovery transformer oil tank structure according to claim 1, characterized by The outer wall of the buffer tank (4) is provided with several heat dissipation plates.

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