Power transformer circulating heat dissipation structure

Abstract

The utility model relates to circulating heat radiation structure technical field discloses a kind of electric power transformer circulating heat radiation structure, including the inner wall of shell is connected with multiple threaded rods by thread, the outer wall of threaded rod is fixedly connected with first joint, the inner wall of first joint is fixedly connected with fixed block, multiple through holes are set in the inner wall of fixed block, the inner wall of fixed block is slidably connected with connecting rod, the right end of connecting rod is fixedly connected with first valve, the left side of first valve is fixedly connected with spring, the outer wall of first joint is fixedly connected with positioning convex point, the outer wall of first joint is slidably connected with multiple slide balls, the outer wall of slide ball is slidably connected with lock sleeve.The utility model in threaded rod fixedly connected first joint, for connecting on shell, can be used for fixed and sealed, and first joint inside has fixed block, it sets multiple through holes, for flowing transformer oil, fixed block inner wall connecting rod, for left and right movement, its right end is fixedly connected with first valve.

Description

Technical Field

[0001] This utility model relates to the field of circulating heat dissipation structure technology, and in particular to a circulating heat dissipation structure for a power transformer. Background Technology

[0002] The circulating heat dissipation structure of a power transformer is a key component ensuring equipment safety during transformer operation. During operation, heat is inevitably generated due to losses in the internal coils and core. The circulating heat dissipation structure assists the transformer by circulating the transformer oil inside to cool it down, and then guiding the cooled oil back into the transformer to help it absorb heat and cool down again. Power transformer circulating heat dissipation structures are installed alongside the transformer and are commonly used in urban residential areas and rural power grid distribution substations. These transformers are often pole-mounted or in small prefabricated substations, and outdoor small substations are often used for branch power supply in industrial parks.

[0003] When it is necessary to cool the transformer oil in a transformer to ensure its normal operation, a circulating cooling structure for power transformers is required. Existing circulating cooling structures for power transformers mostly use natural convection cooling, passive circulation of the radiator, and forced air cooling to achieve cooling of the radiator. During cooling, the cooling efficiency is low, heat is easy to accumulate, and impurities generated by material loss during transformer operation can also affect the state of the transformer oil and the cooling efficiency. When the temperature is too high, it can easily cause the transformer to overload and be damaged, which will increase maintenance costs, shorten the machine's lifespan, affect the surrounding power supply, and cause economic losses. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a circulating heat dissipation structure for power transformers, aiming to improve the problem of low cooling efficiency in the existing technology during circulating heat dissipation.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a circulating heat dissipation structure for a power transformer, comprising a shell, a plurality of threaded rods threadedly connected to the inner wall of the shell, a first connector fixedly connected to the outer wall of the threaded rods, a fixing block fixedly connected to the inner wall of the first connector, a plurality of through holes formed in the inner wall of the fixing block, a connecting rod slidably connected to the inner wall of the fixing block, a first valve fixedly connected to the right end of the connecting rod, a spring fixedly connected to the left side of the first valve, a positioning protrusion fixedly connected to the outer wall of the first connector, a plurality of sliding balls slidably connected to the outer wall of the first connector, a locking sleeve slidably connected to the outer wall of the sliding balls, a second connector fixedly connected to the inner wall of the locking sleeve, a heat dissipation pipe threadedly connected to the right end of the second connector, a plurality of heat dissipation fins fixedly connected to the inner wall of each heat dissipation pipe, and a filter mechanism connected to the front side of the shell, the filter mechanism being used to filter transformer oil in the transformer to improve heat dissipation efficiency.

[0006] As a further description of the above technical solution:

[0007] The filtration mechanism includes a first oil supply pipe, the rear end of which is connected to the front side of the outer casing. A water pump is connected to the rear end of the first oil supply pipe. Multiple filter chambers are connected to the bottom end of the water pump. A base is fixedly connected to the bottom end of each filter chamber. A motor is fixedly connected to the inner wall of the base. An impeller is fixedly connected to the output end of the motor. A heating pipe is connected to the inner wall of the impeller. A second oil supply pipe is connected to the inner wall of the heating pipe. A nozzle is connected to the bottom end of the second oil supply pipe. A spray chamber is fixedly connected to the top right side of the base. Multiple cooling plates are connected to the bottom end of the spray chamber. An oil injection pipe is connected to the inner wall of the cooling plates.

[0008] As a further description of the above technical solution:

[0009] The top of the outer casing is fixedly connected to a top cover, and a plurality of fixing nuts are threadedly connected to the top of the top cover near the edge.

[0010] As a further description of the above technical solution:

[0011] An oil inlet is provided on the rear side of the top of the top cover, and multiple high-pressure sleeves are fixedly connected to the right side of the top of the top cover.

[0012] As a further description of the above technical solution:

[0013] Multiple low-pressure sleeves are fixedly connected to the top left side of the top cover, and an oil level indicator pipe is fixedly connected to the top front side of the top cover.

[0014] As a further description of the above technical solution:

[0015] Multiple support rods are fixedly connected to the top rear side of the top cover, and an oil storage tank is fixedly connected to the top of the support rods.

[0016] As a further description of the above technical solution:

[0017] An observation window is fixedly connected to the outer wall of the spray chamber, and a water outlet is opened on the upper part of the outer wall of the spray chamber.

[0018] As a further description of the above technical solution:

[0019] A controller is fixedly connected to the top of the base. The controller is electrically connected to the water pump and the motor respectively. A pressure gauge is fixedly connected to the top of the controller.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a threaded rod is fixedly connected to a first connector for connection to the outer shell, which can be used for fixing and sealing. The first connector has a fixing block inside, which has multiple through holes for the flow of variable pressure oil. The connecting rod on the inner wall of the fixing block is used for left and right movement. The right end of the connecting rod is fixedly connected to a first valve. The spring on the left side of the first valve can help the first valve reset, and when the first valve is closed, it seals the pipeline to prevent leakage. The positioning protrusion on the outer wall of the first connector can be locked after being engaged by multiple sliding balls on the inner wall of the locking sleeve. The inner wall of the locking sleeve is connected to a second connector, and the right end of the second connector is threadedly connected to a heat dissipation pipe.

[0022] 2. In this utility model, a water pump is connected to the rear end of the first oil supply pipe to draw out the transformer oil and send it into multiple filter chambers connected at the bottom to filter out impurities. The motor at the bottom of the base drives the impeller to send the filtered transformer oil into the heating pipe. After the transformer oil is heated, it is sent to the nozzle of the spray chamber through the second oil supply pipe connected to the inner wall to spray out high-temperature transformer oil. The water contained in it after heating turns into water vapor and separates. After being cooled by the cooling plate connected to the bottom of the spray chamber, the clean transformer oil returns to the transformer through the connected oil injection pipe, which can improve the heat absorption efficiency of the transformer oil and complete the heat dissipation of the transformer. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a circulating heat dissipation structure for a power transformer proposed in this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0025] Figure 3 This is a side perspective view of a circulating heat dissipation structure for a power transformer proposed in this utility model;

[0026] Figure 4 This is a cross-sectional view of the first joint of a circulating heat dissipation structure for a power transformer proposed in this utility model;

[0027] Figure 5 This is a structural exploded view of the second connector of a circulating heat dissipation structure for a power transformer proposed in this utility model;

[0028] Figure 6 This is a partial structural illustration of a circulating heat dissipation structure for a power transformer proposed in this utility model;

[0029] Figure 7 This is a cross-sectional view of the spray chamber of a circulating heat dissipation structure for a power transformer proposed in this utility model.

[0030] Legend:

[0031] 1. Outer casing; 2. Filtering mechanism; 201. First oil delivery pipe; 202. Water pump; 203. Filter chamber; 204. Impeller; 205. Motor; 206. Heating pipe; 207. Spray chamber; 208. Nozzle; 209. Cooling plate; 210. Oil injection pipe; 211. Base; 212. Second oil delivery pipe; 3. Threaded rod; 4. First connector; 5. Fixing block; 6. Through hole; 7. Connecting rod; 8. First 9. Valve; 10. Spring; 11. Locking sleeve; 12. Second connector; 13. Positioning protrusion; 14. Sliding ball; 15. Heat dissipation pipe; 16. Heat dissipation fins; 17. Support rod; 18. Oil reservoir; 19. Oil inlet; 20. High-pressure sleeve; 21. Low-pressure sleeve; 22. Oil level indicator tube; 23. Fixing nut; 24. Pressure gauge; 25. Observation window; 26. Water outlet; 27. Controller; 28. Top cover. Detailed Implementation

[0032] 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 protection scope of the present utility model.

[0033] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 This utility model provides an embodiment of a circulating heat dissipation structure for a power transformer, comprising a housing 1, a plurality of threaded rods 3 threadedly connected to the inner wall of the housing 1, a first connector 4 fixedly connected to the outer wall of the threaded rods 3, a fixing block 5 fixedly connected to the inner wall of the first connector 4, a plurality of through holes 6 opened on the inner wall of the fixing block 5, a connecting rod 7 slidably connected to the inner wall of the fixing block 5, a first valve 8 fixedly connected to the right end of the connecting rod 7, a spring 9 fixedly connected to the left side of the first valve 8, a positioning protrusion 12 fixedly connected to the outer wall of the first connector 4, a plurality of sliding balls 13 slidably connected to the outer wall of the first connector 4, a locking sleeve 10 slidably connected to the outer wall of the sliding balls 13, a second connector 11 fixedly connected to the inner wall of the locking sleeve 10, a heat dissipation pipe 14 threadedly connected to the right end of the second connector 11, a plurality of heat dissipation fins 15 fixedly connected to the inner wall of the heat dissipation pipe 14, and a filter mechanism 2 connected to the front side of the housing 1, the filter mechanism 2 being used to filter the transformer oil in the transformer to improve heat dissipation efficiency;

[0034] Specifically, the outer casing 1 serves as the main frame of the entire heat dissipation structure, protecting the internal components from external environmental influences. The threaded rod 3, with its threaded connection, facilitates installation and disassembly while ensuring a secure connection. Multiple through holes 6 are regularly arranged on the fixing block 5 connected to the inner wall of the first connector 4, providing a flow channel for the transformer oil. The connecting rod 7 can slide freely on the inner wall of the fixing block 5. The first valve 8, fixedly connected to the right end of the connecting rod 7, is a key component controlling the flow of transformer oil. Through the spring 9 fixedly connected to the left side, under normal operating conditions, the spring 9 is under a certain compression state, squeezed by the valve inside the second connector 11. The interconnected pipes allow the transformer oil to flow. The outer wall of the head 4 is fixedly connected with a positioning protrusion 12. When it is necessary to fix the locking sleeve 10 on the first connector 4, the locking sleeve 10 is rotated to make the sliding ball 13 engage with the corresponding position of the positioning protrusion 12, thereby achieving a tight connection between the locking sleeve 10 and the first connector 4. The second connector 11 has a similar structure and function to the first connector 4, but its connection direction is opposite to that of the first connector 4. The right end of the second connector 11 is connected to a heat dissipation pipe 14 by a thread. The pipe is hollow inside, providing a flow channel for transformer oil. Multiple heat dissipation fins 15 are fixedly connected to the inner wall of the heat dissipation pipe 14. The heat dissipation fins 15 are thin and evenly distributed on the inner wall of the heat dissipation pipe 14. The function of the heat dissipation fins 15 is to increase the heat dissipation area.

[0035] Please see the appendix Figure 1 Appendix Figure 6 and attached Figure 7 The filtration mechanism 2 includes a first oil supply pipe 201, the rear end of which is connected to the front side of the outer casing 1. A water pump 202 is connected to the rear end of the first oil supply pipe 201. Multiple filter chambers 203 are connected to the bottom end of the water pump 202. A base 211 is fixedly connected to the bottom end of the filter chamber 203. A motor 205 is fixedly connected to the inner wall of the base 211. An impeller 204 is fixedly connected to the output end of the motor 205. A heating pipe 206 is connected to the inner wall of the impeller 204. A second oil supply pipe 212 is connected to the inner wall of the heating pipe 206. A nozzle 208 is connected to the bottom end of the second oil supply pipe 212. A spray chamber 207 is fixedly connected to the top right side of the base 211. Multiple cooling plates 209 are connected to the bottom end of the spray chamber 207. An oil injection pipe 210 is connected to the inner wall of the cooling plates 209.

[0036] Specifically, the rear end of the first oil supply pipe 201 is tightly connected to the front side of the outer casing 1. This connection ensures that the transformer oil can flow smoothly from inside the transformer into the filter mechanism 2. The rear end of the first oil supply pipe 201 is connected to the water pump 202, which quickly and stably extracts the transformer oil from the transformer and delivers it to the subsequent filtration stage. The bottom end of the water pump 202 is connected to multiple filter chambers 203. These filter chambers 203 are key parts for the initial filtration of the transformer oil. The base 211 is the support and fixing platform for the entire filter mechanism 2, providing a stable installation foundation for other components. The inner wall of the base 211 is fixedly connected to the motor 205. The motor 205 is the core component that drives the impeller 204. 05 drives the impeller 204, drawing out the air from the filter chamber 203 and creating negative pressure, allowing the transformer oil to pass through the filter material more smoothly, improving filtration speed and efficiency. The inner wall of the impeller 204 is connected to the heating pipe 206, making it easier for some volatile impurities in the transformer oil to evaporate, achieving deep purification. The inner wall of the heating pipe 206 is connected to the second oil supply pipe 212, which is responsible for transporting the heated transformer oil to the subsequent spraying stage. The spray chamber 207 is used to separate the water in the transformer oil, and the bottom end is connected to multiple cooling plates 209 for cooling. Finally, the oil is reinjected into the transformer through the oil injection pipe 210 connected to the inner wall, ensuring the normal operation of the transformer.

[0037] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The top of the outer casing 1 is fixedly connected to a top cover 27. Multiple fixing nuts 22 are threadedly connected to the top of the top cover 27 near the edge. An oil inlet 18 is opened on the rear side of the top of the top cover 27. Multiple high-pressure sleeves 19 are fixedly connected to the right side of the top of the top cover 27. Multiple low-pressure sleeves 20 are fixedly connected to the left side of the top of the top cover 27. An oil level indicator tube 21 is fixedly connected to the front side of the top of the top cover 27.

[0038] Specifically, a top cover 27 is fixedly connected to the top of the outer casing 1, and is fixed and sealed by multiple fixing nuts 22 connected by threads. An oil filling port 18 is opened on the rear side of the top of the top cover 27 for replenishing the transformer oil after it is consumed. Multiple high-voltage sleeves 19 and low-voltage sleeves 20 are fixedly connected to the right side of the top of the top cover 27, which can effectively isolate the current in a high-voltage environment and prevent leakage and short circuit accidents. The oil level indicator tube 21 on the top of the top cover 27 is an important tool for observing the oil level inside the transformer.

[0039] Please see the appendix Figure 1 and attached Figure 3Multiple support rods 16 are fixedly connected to the top rear side of the top cover 27. An oil tank 17 is fixedly connected to the top of the support rods 16. An observation window 24 is fixedly connected to the outer wall of the spray chamber 207. A water outlet 25 is opened on the upper part of the outer wall of the spray chamber 207. A controller 26 is fixedly connected to the top of the base 211. The controller 26 is electrically connected to the water pump 202 and the motor 205 respectively. A pressure gauge 23 is fixedly connected to the top of the controller 26.

[0040] Specifically, the top rear side of the top cover 27 is fixedly connected to multiple support rods 16, and the top of the support rod is fixedly connected to an oil tank 17 for storing clean transformer oil, which is taken out and added to the transformer when needed. The observation window 24 on the outer wall of the spray chamber 207 is used to observe the atomization process of the transformer oil. The upper part of the outer wall of the spray chamber 207 is provided with a water outlet 25 for discharging the heated water vapor. The top of the base 211 is fixedly connected to a controller 26 for controlling the operation of the water pump 202 and the motor 205. The pressure gauge 23 fixed on its top is used to observe the pressure during operation.

[0041] Working principle: The threaded rod 3 is fixedly connected to the first connector 4, which is used to connect to the outer shell 1 for fixing and sealing. The first connector 4 has a fixing block 5 inside, which has multiple through holes 6 for the flow of transformer oil. The inner wall of the fixing block 5 is slidably connected to the connecting rod 7 for left and right movement. The right end of the connecting rod 7 is fixedly connected to the first valve 8. The spring 9 on the left side of the first valve 8 can help the first valve 8 reset, and when the first valve 8 is closed, it seals the pipeline to prevent leakage. The positioning protrusion 12 on the outer wall of the first connector 4 can be locked by multiple sliding balls 13 sliding on the inner wall of the locking sleeve 10. The inner wall of the locking sleeve 10 is connected to the second connector 11. The right end of the second connector 11 is threadedly connected to the heat dissipation pipe 14, which is used to flow the transformer oil in the transformer to multiple heat dissipation fins 15 to improve heat dissipation.

[0042] A water pump 202 is connected to the rear end of the first oil supply pipe 201 to draw transformer oil into multiple filter chambers 203 connected to the bottom to filter impurities in the transformer oil. A motor 205 is located at the bottom of the base 211 to drive the impeller 204 to send the filtered transformer oil into the heating pipe 206. The heating pipe 206 heats the transformer oil and then sends it through the second oil supply pipe 212 connected to the inner wall to the nozzle 208 in the spray chamber 207 to spray out high-temperature transformer oil emulsification. The water contained in it after heating turns into water vapor and separates. The cooled and clean transformer oil is returned to the transformer through the oil injection pipe 210 connected to the bottom of the spray chamber 207 via the cooling plate 209. This improves the heat absorption efficiency of the transformer oil and completes the heat dissipation of the transformer.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating heat dissipation structure for a power transformer, comprising a housing (1), characterized in that: The inner wall of the outer shell (1) is threaded with multiple threaded rods (3), and the outer wall of the threaded rods (3) is fixedly connected with a first connector (4). The inner wall of the first connector (4) is fixedly connected with a fixing block (5). The inner wall of the fixing block (5) is provided with multiple through holes (6). The inner wall of the fixing block (5) is slidably connected with a connecting rod (7). The right end of the connecting rod (7) is fixedly connected with a first valve (8). The left side of the first valve (8) is fixedly connected with a spring (9). The outer wall of the first connector (4) is fixedly connected with a positioning protrusion. (12) The outer wall of the first connector (4) is slidably connected to a plurality of ball bearings (13), the outer wall of the ball bearings (13) is slidably connected to a locking sleeve (10), the inner wall of the locking sleeve (10) is fixedly connected to a second connector (11), the right end of the second connector (11) is threadedly connected to a heat dissipation pipe (14), the inner wall of the heat dissipation pipe (14) is fixedly connected to a plurality of heat dissipation fins (15), the front side of the outer shell (1) is connected to a filter mechanism (2), the filter mechanism (2) is used to filter the transformer oil in the transformer to improve heat dissipation efficiency.

2. The circulating heat dissipation structure for a power transformer according to claim 1, characterized in that: The filtration mechanism (2) includes a first oil supply pipe (201), the rear end of which is connected to the front side of the outer casing (1). A water pump (202) is connected to the rear end of the first oil supply pipe (201). A plurality of filter chambers (203) are connected to the bottom end of the water pump (202). A base (211) is fixedly connected to the bottom end of the filter chamber (203). A motor (205) is fixedly connected to the inner wall of the base (211). The output end of the motor (205) is fixed. An impeller (204) is connected to the base (211). The inner wall of the impeller (204) is connected to a heating pipe (206). The inner wall of the heating pipe (206) is connected to a second oil supply pipe (212). The bottom end of the second oil supply pipe (212) is connected to a nozzle (208). A spray chamber (207) is fixedly connected to the top right side of the base (211). The bottom end of the spray chamber (207) is connected to multiple cooling plates (209). The inner wall of the cooling plates (209) is connected to an oil injection pipe (210).

3. The circulating heat dissipation structure for a power transformer according to claim 1, characterized in that: The top of the outer casing (1) is fixedly connected to a top cover (27), and a plurality of fixing nuts (22) are threadedly connected to the top of the top cover (27) near the edge.

4. The circulating heat dissipation structure for a power transformer according to claim 3, characterized in that: An oil inlet (18) is provided on the rear side of the top of the top cover (27), and multiple high-pressure sleeves (19) are fixedly connected to the right side of the top of the top cover (27).

5. The circulating heat dissipation structure for a power transformer according to claim 3, characterized in that: Multiple low-pressure sleeves (20) are fixedly connected to the top left side of the top cover (27), and an oil level indicator pipe (21) is fixedly connected to the top front side of the top cover (27).

6. The circulating heat dissipation structure for a power transformer according to claim 3, characterized in that: Multiple support rods (16) are fixedly connected to the rear top of the top cover (27), and an oil storage tank (17) is fixedly connected to the top of the support rods (16).

7. The circulating heat dissipation structure for a power transformer according to claim 2, characterized in that: An observation window (24) is fixedly connected to the outer wall of the spray chamber (207), and a water outlet (25) is opened on the upper part of the outer wall of the spray chamber (207).

8. The circulating heat dissipation structure for a power transformer according to claim 2, characterized in that: A controller (26) is fixedly connected to the top of the base (211). The controller (26) is electrically connected to the water pump (202) and the motor (205) respectively. A pressure gauge (23) is fixedly connected to the top of the controller (26).

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