An oil-immersed wound-core transformer
By introducing automated push components, oil supply structure and cooling structure into the oil-immersed iron coil transformer, the problems of inconvenient replacement of dry structures and inconvenient addition of cooling oil are solved, and efficient air drying, cooling oil addition and heat dissipation effects are achieved.
Patent Information
- Application Number
- CN202510688791.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2045-05-27
AI Technical Summary
The drying structure of the existing oil-immersed transformer needs to be manually replaced, which is inconvenient to operate, and the cooling oil is not convenient enough, and the heat dissipation efficiency is low.
An oil-immersed iron core transformer is designed, including an air-drying structure, an oil supply structure, a filtering assembly, a cooling assembly and a cooling structure. The automatic material push assembly is used to realize the convenient replacement of the drying assembly, the automatic addition of cooling oil is achieved by using the oil supply structure and an oil pump, and the heat dissipation efficiency is improved through the spiral pipe and the water-squirting cooling structure.
It realizes convenient replacement of air-drying components, automatic addition of cooling oil and efficient heat dissipation, improving operational convenience and heat dissipation effect.
Smart Images
Figure CN120199588B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of transformers, and more particularly to an oil-immersed wound-core transformer. Background Art
[0002] The oil-immersed transformer is a new type of high-performance transformer with a more reasonable structure and better performance. Its three core columns of the three-dimensional wound core are arranged in an equilateral triangle in three dimensions. There is no air gap in its magnetic circuit, the winding is tighter, the lengths of the three magnetic circuits are the same and the shortest, and the cross-sectional area of the core column is closer to a circle. Therefore, the performance is further improved, the loss is reduced, the noise is reduced, the three-phase balance is achieved, and the third harmonic component is reduced. This product is more suitable for the transformation of urban and rural, industrial and mining enterprise power grids, and is more suitable for transformers used in combined transformers and prefabricated substations.
[0003] Generally, the oil-immersed transformer adopts an external oil-type corrugated oil conservator. The oil outside the corrugated expansion core is directly connected and shared with the insulating oil of the transformer. At present, a drying structure is provided on the oil-immersed transformer, which can adjust the air pressure in the transformer oil tank and dry the air entering the oil tank. After long-term use of the drying structure, the drying material in the drying structure will fail and needs to be manually replaced, which is rather troublesome to operate. Moreover, when the cooling oil in the oil conservator is insufficient, the staff needs to lift the oil tank and pour it through the oil inlet of the oil conservator, and the operation is not convenient enough. Summary of the Invention
[0004] In order to solve the problems raised in the above background art, the present invention provides an oil-immersed wound-core transformer.
[0005] The oil-immersed wound-core transformer provided by the present invention adopts the following technical solutions:
[0006] An oil-immersed wound-core transformer includes a support base. The top of the support base mounts the transformer main body. An air drying structure is mounted on the top of the transformer main body. One end of the transformer main body is fixedly installed with a storage tank through a support. The bottom oil outlet of the storage tank is connected to the oil inlet of the transformer main body through an oil pipe. One end of the storage tank is connected to the oil outlet of an oil pump through an oil pipe, and the oil inlet of the oil pump is installed with a fuel supply structure through an oil pipe. The oil outlet near the bottom end of one end of the transformer main body is connected to the oil inlet of the oil pump through an oil pipe, and the oil outlet of the oil pump is connected to the oil inlet at the top of a filtering component through an oil pipe. The oil outlet at the bottom of the filtering component is connected to the oil inlet of a cooling component through an oil pipe. The oil outlet of the cooling component is connected to the oil inlet of the oil pump through an oil pipe, and the oil outlet of the oil pump is connected to the oil inlet of the transformer main body through an oil pipe. A spiral pipe is provided in the cooling component.
[0007] Preferably, the air drying structure includes an air drying cylinder connected to the top pipe orifice of the transformer body. An air drying component is installed inside the air drying cylinder. An exhaust pipe is provided at the top of the air drying cylinder, and a solenoid valve is installed on the exhaust pipe. A pushing frame is provided on one side of the air drying cylinder, and a storage frame is provided at the other end of the air drying cylinder. A storage material frame is provided on one side of the pushing frame, a first pushing component is provided on the storage material frame, and a second pushing component is provided on the pushing frame.
[0008] Preferably, the first pushing component includes a third L-shaped rod on the outer wall of the storage material frame. One end of the third L-shaped rod is fixedly installed with a first air cylinder, and the output end of the first air cylinder is installed with a first push plate. The second pushing component includes a fourth L-shaped rod installed on the outer wall of the pushing frame. One end of the fourth L-shaped rod is fixedly installed with a second air cylinder, and the output end of the second air cylinder is fixedly installed with a second push plate.
[0009] Preferably, a protrusion is provided at the inner bottom of the air drying cylinder, and clamping grooves are provided at the protrusion and the inner top of the air drying cylinder. The air drying component includes a drying inner cylinder, and clamping blocks are provided at both ends of the drying inner cylinder. The clamping blocks are inserted into the corresponding clamping grooves.
[0010] Preferably, the oil supply structure includes a frame body. A first connection seat and a second connection seat are fixedly installed at the inner top of the frame body. A second limiting disc is installed on the second connection seat. A support block is fixedly installed at the inner bottom of the frame body. A forward and reverse motor is installed on the top of the support block. The output end of the forward and reverse motor is installed with a first limiting disc through a shaft rod. A winding roller is fixedly installed at one end of the first limiting disc. One end of the winding roller is installed with a bearing seat on the second limiting disc through a bearing. An oil supply pipe is wound around the winding roller. One end of the oil supply pipe is installed with an oil supply head, and an opening is provided at the bottom of the frame body.
[0011] Preferably, heat dissipation fins are provided on both side walls of the transformer body, and a temperature reduction structure for cooling the heat dissipation fins is installed on the top of the support base.
[0012] Preferably, the temperature reduction structure includes a first L-shaped rod installed on the top of the support base. A servo motor is fixedly installed at the top of the first L-shaped rod. The output end of the servo motor is connected to one end of a lead screw. The other end of the lead screw is installed with a bearing seat on the top of the support base through a bearing. The lead screw is adaptively installed with a lead screw sleeve block. A water spraying main pipe is provided at one end of the lead screw sleeve block. The corresponding water outlet on the water spraying main pipe is connected to a water spraying branch pipe. The corresponding water spraying branch pipe is arranged between two adjacent heat dissipation fins.
[0013] Preferably, the cooling structure further includes a second L-shaped rod fixedly installed on the top of the support base. A positioning rod is fixedly connected to the second L-shaped rod. A movable positioning block is arranged on the positioning rod, and the positioning block is also connected to the main water spraying pipe.
[0014] In summary, the present invention includes the following beneficial technical effects:
[0015] In the air drying structure of the present invention, a storage frame, a pushing frame and a storage frame are provided. A first pushing component is arranged in the storage frame, and a second pushing component is arranged in the pushing frame. Multiple air drying components can be sequentially stored in the storage frame. When it is necessary to replace the air drying component in the air drying cylinder, the first pushing component can push the air drying component. After the air drying component is moved to a suitable position, the second pushing component works to replace the air drying component in the air drying cylinder. The replaced air drying component is placed in the storage frame, so that the replacement of the air drying component is more convenient;
[0016] The present invention is provided with an oil supply structure at the oil storage tank. When it is necessary to add cooling oil to the oil storage tank, the forward and reverse motor in the oil supply structure works to drive the winding roller on the first limiting disc to rotate. The oil supply pipe on the winding roller will be wound downwards, and the oil supply head at one end of the oil supply pipe will drop to a suitable position. Combined with the oil pump, the addition of cooling oil to the oil storage tank is more convenient and easier to use;
[0017] The present invention is provided with a filtering component, a cooling component and a cooling structure. In hot summer or during peak electricity consumption periods, the cooling oil in the transformer body first passes through the filtering component for filtering under the action of the oil pump, and then passes through the spiral pipe in the cooling component for cooling. The setting of the spiral pipe can increase the cooling effect on the cooling oil. The cooled cooling oil enters the transformer body and circulates repeatedly, so that the transformer can be better cooled. Combined with the cooling structure, the cooling structure cools the heat dissipation fins on both sides of the transformer body to improve the cooling efficiency. Description of the Drawings
[0018] Figure 1 is a schematic structural diagram of an oil-immersed wound-core transformer in an embodiment of the present invention;
[0019] Figure 2 is a schematic position structural diagram of the oil supply structure in an embodiment of the present invention;
[0020] Figure 3 is a schematic internal structural diagram of the oil supply structure in an embodiment of the present invention;
[0021] Figure 4 is a schematic position structural diagram of the air drying structure in an embodiment of the present invention;
[0022] Figure 5 It is a schematic internal structure diagram of the air drying structure in an embodiment of the present invention;
[0023] Figure 6 It is a schematic position structure diagram of the fuel tank in an embodiment of the present invention;
[0024] Figure 7 It is in an embodiment of the present invention Figure 6 Enlarged view of the structure at position A;
[0025] Figure 8 It is a schematic structure diagram of the air drying component in an embodiment of the present invention.
[0026] Explanation of reference numerals: 1, support base; 2, transformer main body; 3, air drying structure; 31, storage frame; 32, third L-shaped rod; 33, first cylinder; 34, first push plate; 35, fourth L-shaped rod; 36, second cylinder; 37, material pushing frame; 38, second push plate; 39, air drying cylinder; 310, storage frame; 311, exhaust pipe; 312, protrusion; 313, card slot; 4, fuel tank; 5, oil supply structure; 51, frame body; 52, support block; 53, forward and reverse motor; 54, first limit disc; 55, second limit disc; 56, winding roller; 57, oil supply pipe; 58, opening; 59, oil supply head; 510, first connection seat; 511, second connection seat; 6, filtering component; 7, cooling component; 8, first L-shaped rod; 9, servo motor; 10, lead screw; 11, lead screw sleeve block; 12, heat dissipation fins; 13, second L-shaped rod; 14, positioning rod; 15, positioning block; 16, water spraying main pipe; 17, water spraying branch pipe; 18, air drying component; 181, drying inner cylinder; 182, clamping block. Detailed implementation manners
[0027] The following is a further detailed description of the present invention in conjunction with the attached Figures 1 - 8 drawings.
[0028] An embodiment of the present invention discloses an oil-immersed wound-core transformer, which includes a support base 1. The transformer body 2 is installed on the top of the support base 1. An air drying structure 3 is installed on the top of the transformer body 2. One end of the transformer body 2 is fixedly installed with a storage oil tank 4 through a support. The bottom oil outlet of the storage oil tank 4 is connected to the oil inlet pipe opening on the transformer body 2 through an oil outlet pipe. One end of the storage oil tank 4 is connected to the oil outlet pipe opening on an oil pump through an oil pipe. And the oil inlet pipe opening on the oil pump is installed with a fuel supply structure 5 through an oil pipe. The oil outlet pipe opening near the bottom end of one end of the transformer body 2 is connected to the oil inlet pipe opening on the oil pump through an oil pipe. And the oil outlet pipe opening on the oil pump is connected to the oil inlet pipe opening on the top of a filtering component 6 through an oil pipe. The oil outlet pipe opening at the bottom of the filtering component 6 is connected to the oil inlet pipe opening on a cooling component 7 through an oil pipe. The oil outlet pipe opening on the cooling component 7 is connected to the oil inlet pipe opening of the oil pump through an oil pipe. And the oil outlet pipe opening of the oil pump is connected to the oil inlet pipe opening on the transformer body 2 through an oil pipe. A spiral pipe is provided in the cooling component 7. In hot summer or during peak electricity consumption periods, the cooling oil in the transformer body 2 enters the filtering component 6 for filtering under the action of the oil pump, and then passes through the spiral pipe in the cooling component 7. The spiral pipe reduces the flow rate of the cooling oil, thereby increasing the cooling effect on the cooling oil. Finally, the cooling oil flows back into the transformer body 2 again, circulating in this way to improve the heat dissipation efficiency. The air drying structure 3 includes an air drying cylinder 39 connected to the top pipe opening of the transformer body 2. An air drying component 18 is installed in the air drying cylinder 39. An exhaust pipe 311 is provided at the top of the air drying cylinder 39, and a solenoid valve is installed on the exhaust pipe 311. A pushing frame 37 is provided on one side of the air drying cylinder 39, and a storage frame 310 is provided at the other end of the air drying cylinder 39. A storage frame 31 is provided on one side of the pushing frame 37, and a first pushing component is provided on the storage frame 31. A second pushing component is provided on the pushing frame 37. The first pushing component includes a third L-shaped rod 32 on the outer wall of the storage frame 31. One end of the third L-shaped rod 32 is fixedly installed with a first cylinder 33, and the output end of the first cylinder 33 is installed with a first push plate 34. The second pushing component includes a fourth L-shaped rod 35 installed on the outer wall of the pushing frame 37. One end of the fourth L-shaped rod 35 is fixedly installed with a second cylinder 36, and the output end of the second cylinder 36 is fixedly installed with a second push plate 38. A protrusion 312 is provided at the inner bottom of the air drying cylinder 39, and clamping grooves 313 are provided in the protrusion 312 and the inner top of the air drying cylinder 39. The air drying component 18 includes a drying inner cylinder 181. Clamping blocks 182 are provided at both ends of the drying inner cylinder 181, and the clamping blocks 182 are inserted into the corresponding clamping grooves 313. When it is necessary to replace the air drying component 18 in the air drying cylinder 39, the first cylinder 33 on the third L-shaped rod 32 works to drive the first push plate 34 to work. The first push plate 34 slowly pushes the air drying component 18 in the storage frame 31 into a suitable position in the pushing frame 37.Then, the second cylinder 36 on the fourth L-shaped rod 35 operates to drive the second push plate 38 to move. The drying inner cylinder 181 will slowly push out the corresponding drying inner cylinder 181 in the air drying cylinder 39. The clamping blocks 182 provided at both ends of the drying inner cylinder 181 are inserted into the corresponding clamping grooves 313 in the air drying cylinder 39 to complete the replacement of the drying inner cylinder 181. The replaced drying inner cylinder 181 will be placed in the storage frame 310, making the replacement of the drying inner cylinder 181 more convenient and more flexible.
[0029] Refer to Figure 1 , Figure 2 and Figure 3 , the oil supply structure 5 includes a frame body 51. A first connection seat 510 and a second connection seat 511 are fixedly installed at the top inside the frame body 51. A second limit disk 55 is installed on the second connection seat 511. A support block 52 is fixedly installed at the bottom inside the frame body 51. A forward and reverse motor 53 is installed on the top of the support block 52. The output end of the forward and reverse motor 53 is installed with the first limit disk 54 through a shaft rod. A winding roller 56 is fixedly installed at one end of the first limit disk 54. One end of the winding roller 56 is installed with a bearing seat on the second limit disk 55 through a bearing. An oil supply pipe 57 is wound around the winding roller 56. An oil supply head 59 is installed at one end of the oil supply pipe 57. An opening 58 is provided at the bottom of the frame body 51. When adding cooling oil to the storage oil tank 4, the forward and reverse motor 53 in the oil supply structure 5 operates to drive the corresponding first limit disk 54 to rotate. While the first limit disk 54 rotates, the winding roller 56 also rotates accordingly, slowly unwinding the oil supply pipe 57 wound on the winding roller 56, so that the oil supply head 59 slowly moves downward and is placed in the oil barrel. When the oil pump operates, the oil supply work for the storage oil tank 4 can be completed. The operation is simple and the work efficiency is improved.
[0030] Refer to Figure 1, heat dissipation fins 12 are provided on both side walls of the transformer main body 2, and a cooling structure for cooling the heat dissipation fins 12 is installed on the top of the support base 1. The cooling structure includes a first L-shaped rod 8 installed on the top of the support base 1. A servo motor 9 is fixedly installed at the top of the first L-shaped rod 8. The output end of the servo motor 9 is connected to one end of a lead screw 10. The other end of the lead screw 10 is installed through a bearing on a bearing seat installed on the top of the support base 1. The lead screw 10 is adaptively installed with a lead screw sleeve block 11. One end of the lead screw sleeve block 11 is provided with a main water spraying pipe 16. The corresponding water outlet on the main water spraying pipe 16 is connected to a water spraying branch pipe 17. The corresponding water spraying branch pipe 17 is placed between two adjacent heat dissipation fins 12. The cooling structure further includes a second L-shaped rod 13 fixedly installed on the top of the support base 1. A positioning rod 14 is fixedly connected to the second L-shaped rod 13. A moving positioning block 15 is provided on the positioning rod 14. The positioning block 15 is also connected to the main water spraying pipe 16. The servo motor 9 in the cooling structure works to drive the lead screw 10 to rotate. While the lead screw 10 rotates, it drives the main water spraying pipe 16 to move up and down. Water is sprayed from the water spraying branch pipes 17 on the main water spraying pipe 16 to dissipate heat and cool the heat dissipation fins 12, thereby improving the heat dissipation effect of the transformer main body 2.
[0031] The implementation principle of an oil-immersed wound-core transformer in an embodiment of the present invention is as follows: In hot summer or during peak electricity consumption periods, the cooling oil in the transformer main body 2 enters the filtering assembly 6 for filtering under the action of an oil pump, and then passes through the spiral tube in the cooling assembly 7. The spiral tube reduces the flow rate of the cooling oil, thereby enhancing the cooling effect on the cooling oil. Finally, the cooling oil flows back into the transformer main body 2 and circulates in this way. Moreover, the servo motor 9 in the temperature reduction structure operates to drive the screw rod 10 to rotate. While the screw rod 10 rotates, it drives the water spray main pipe 16 to move up and down. The water spray branch pipes 17 on the water spray main pipe 16 spray water to cool down the heat dissipation fins 12, thereby improving the heat dissipation effect of the transformer main body 2. When it is necessary to replace the air drying assembly 18 in the air drying cylinder 39, the first air cylinder 33 on the third L-shaped rod 32 operates to drive the first push plate 34 to work. The first push plate 34 slowly pushes the air drying assembly 18 in the storage frame 31 to a suitable position in the pushing frame 37. Then, the second air cylinder 36 on the fourth L-shaped rod 35 operates to drive the second push plate 38 to move, and the drying inner cylinder 181 will slowly push out the corresponding drying inner cylinder 181 in the air drying cylinder 39. The clamping blocks 182 provided at both ends of the drying inner cylinder 181 are inserted into the corresponding card slots 313 in the air drying cylinder 39 to complete the replacement of the drying inner cylinder 181. The replaced drying inner cylinder 181 will be placed in the storage frame 310, making the replacement of the drying inner cylinder 181 more convenient and more flexible. When adding cooling oil to the oil storage tank 4, the forward and reverse motor 53 in the oil supply structure 5 operates to drive the corresponding first limit disk 54 to rotate. While the first limit disk 54 rotates, the winding roller 56 also rotates accordingly, slowly unwinding the oil supply pipe 57 wound on the winding roller 56, so that the oil supply head 59 slowly moves downward and is placed in the oil barrel. When the oil pump operates, oil can be supplied to the oil storage tank 4, with simple operation and improved work efficiency.
[0032] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. An oil-immersed wound-core transformer, comprising a support base (1), the top of the support base (1) mounts the transformer body (2), and it is characterized in that: An air drying structure (3) is installed on the top of the transformer body (2). One end of the transformer body (2) is fixedly installed with a storage oil tank (4) through a support. The bottom oil outlet of the storage oil tank (4) is connected to the oil inlet pipe opening on the transformer body (2) through an oil outlet pipe. One end of the storage oil tank (4) is connected to the oil outlet pipe opening on an oil pump through an oil pipe, and the oil inlet pipe opening on the oil pump is installed with a fuel supply structure (5) through an oil pipe. The oil outlet pipe opening near the bottom end of one end of the transformer body (2) is connected to the oil inlet pipe opening on the oil pump through an oil pipe, and the oil outlet pipe opening on the oil pump is connected to the oil inlet pipe opening at the top of a filtering component (6) through an oil pipe. The oil outlet pipe opening at the bottom of the filtering component (6) is connected to the oil inlet pipe opening on a cooling component (7) through an oil pipe. The oil outlet pipe opening on the cooling component (7) is connected to the oil inlet pipe opening of the oil pump through an oil pipe, and the oil outlet pipe opening of the oil pump is connected to the oil inlet pipe opening on the transformer body (2) through an oil pipe. A spiral pipe is provided in the cooling component (7); The air drying structure (3) includes an air drying cylinder (39) connected to the top pipe opening of the transformer body (2). An air drying component (18) is installed in the air drying cylinder (39). An exhaust pipe (311) is provided at the top of the air drying cylinder (39). A solenoid valve is installed on the exhaust pipe (311). A push material frame (37) is provided on one side of the air drying cylinder (39), and a storage frame (310) is provided at the other end of the air drying cylinder (39). A storage material frame (31) is provided on one side of the push material frame (37). A first push material component is provided on the storage material frame (31), and a second push material component is provided on the push material frame (37); The first push material component includes a third L-shaped rod (32) on the outer wall of the storage material frame (31). A first air cylinder (33) is fixedly installed at one end of the third L-shaped rod (32). The output end of the first air cylinder (33) is installed with a first push plate (34). The second push material component includes a fourth L-shaped rod (35) installed on the outer wall of the push material frame (37). A second air cylinder (36) is fixedly installed at one end of the fourth L-shaped rod (35). The output end of the second air cylinder (36) is fixedly installed with a second push plate (38).
2. The oil-immersed wound core transformer according to claim 1, wherein: A protrusion (312) is provided at the inner bottom of the air drying cylinder (39). A clamping groove (313) is formed between the protrusion (312) and the inner top of the air drying cylinder (39). The air drying component (18) includes a drying inner cylinder (181). Clamping blocks (182) are provided at both ends of the drying inner cylinder (181). The clamping blocks (182) are inserted into the corresponding clamping grooves (313).
3. The oil-immersed wound-core transformer according to claim 1, wherein: The fuel supply structure (5) includes a frame body (51). A first connecting seat (510) and a second connecting seat (511) are fixedly installed at the inner top of the frame body (51). A second limiting disc (55) is installed on the second connecting seat (511). A support block (52) is fixedly installed at the inner bottom of the frame body (51). A forward and reverse motor (53) is installed on the top of the support block (52). The output end of the forward and reverse motor (53) is installed with a first limiting disc (54) through a shaft rod. A winding roller (56) is fixedly installed at one end of the first limiting disc (54). One end of the winding roller (56) is installed with a bearing seat on the second limiting disc (55) through a bearing. A fuel supply pipe (57) is wound around the winding roller (56). A fuel supply head (59) is installed at one end of the fuel supply pipe (57). An opening (58) is formed at the bottom of the frame body (51).
4. The oil-immersed wound-core transformer according to claim 1, wherein: Radiating fins (12) are arranged on both side walls of the transformer body (2). A temperature reduction structure for cooling the radiating fins (12) is installed on the top of the support base (1).
5. The oil-immersed wound-core transformer according to claim 4, wherein: The temperature reduction structure includes a first L-shaped rod (8) installed on the top of the support base (1). A servo motor (9) is fixedly installed at the top of the first L-shaped rod (8). The output end of the servo motor (9) is connected to one end of a lead screw (10). The other end of the lead screw (10) is installed with a bearing seat on the top of the support base (1) through a bearing. The lead screw (10) is adaptively installed with a lead screw sleeve block (11). A water spraying main pipe (16) is arranged at one end of the lead screw sleeve block (11). The corresponding water outlet on the water spraying main pipe (16) is connected to a water spraying branch pipe (17). The corresponding water spraying branch pipe (17) is placed between two adjacent radiating fins (12).
6. The oil-immersed wound-core transformer according to claim 5, wherein: The temperature reduction structure further includes a second L-shaped rod (13) fixedly installed on the top of the support base (1). A positioning rod (14) is fixedly connected to the second L-shaped rod (13). A moving positioning block (15) is arranged on the positioning rod (14). The positioning block (15) is also connected to the water spraying main pipe (16).
Citation Information
Patent Citations
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