Iron core heat dissipation structure of oil-immersed transformer
By designing a heat dissipation channel structure in an oil-immersed transformer, the circulating flow of insulating oil is promoted, and the problem of high temperatures in the iron core under high-frequency working conditions is solved, the heat dissipation efficiency is improved, the transformer failure is avoided, and the stable operation of the equipment is ensured.
Patent Information
- Application Number
- CN202420462020.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-11
AI Technical Summary
Under high-frequency working conditions, the core of the oil-immersed transformer generates heat, and the local temperature may reach 150℃, causing the insulating oil to deteriorate. After a long period of operation, it may cause the transformer to fail, affecting the stability of the equipment.
An oil-immersed transformer iron core heat dissipation structure is designed. By setting a second heat dissipation channel between the core body and the primary skeleton, and setting a first heat dissipation channel between the primary skeleton and the secondary skeleton, insulating oil flows up and down along these channels, driving the heat dissipation of the iron core.
Effectively promote the circulating flow of insulating oil, improve heat dissipation performance and efficiency, reduce the temperature of the core body, avoid transformer failures caused by core heating at high frequency and high power, and ensure the stable operation of the equipment.
Smart Images
Figure CN222600683U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat dissipation of oil-immersed transformer cores, in particular to a heat dissipation structure of oil-immersed transformer cores. Background Art
[0002] Oil-immersed transformers use transformer oil for heat dissipation and insulation. The iron core and windings of the transformer are immersed in transformer oil. Under high-frequency working conditions, the iron core of the oil-immersed transformer will generate heat, and the local temperature may reach 150°C, which will cause the transformer insulating oil to deteriorate. After long-term operation, it will cause the transformer to malfunction and affect the stability of the equipment. Utility Model Content
[0003] In order to improve the above-mentioned problem that under high-frequency working conditions, the iron core of the oil-immersed transformer will generate heat, the local temperature may reach 150°C, which will cause the transformer insulating oil to deteriorate, and after long-term operation, it will cause the transformer to malfunction and affect the stability of the equipment, the utility model provides a heat dissipation structure for the iron core of the oil-immersed transformer.
[0004] The utility model provides an oil-immersed transformer core heat dissipation structure, which adopts the following technical solutions:
[0005] A heat dissipation structure for an oil-immersed transformer core comprises two groups of primary side frames, four inner corners of the two groups of primary side frames are connected with positioning ribs, a core body is clamped between the positioning ribs, secondary side frames are sleeved on the outside of the two groups of primary side frames, a first heat dissipation channel is arranged between the primary side frames and the secondary side frames, and a second heat dissipation channel is arranged between the core body and the primary side frames.
[0006] By adopting the above technical solution, the primary side skeleton is sleeved on the outside of the core body, and the positioning ribs are clamped with the outside of the core body, so that the primary side skeleton can be sleeved on the outside of the core body, and then the secondary side skeleton is sleeved on the outside of the primary side skeleton, and a second heat dissipation channel is set between the core body and the primary side skeleton, and a first heat dissipation channel is set between the primary side skeleton and the secondary side skeleton, so that the transformer insulating oil can flow up and down along the first heat dissipation channel and the second heat dissipation channel, driving the heat dissipation of the transformer core body, improving the heat dissipation performance and efficiency, and helping to reduce the temperature of the transformer oil tank, and avoiding failures such as transformer burning due to heating of the core body under high frequency and high power as much as possible, thereby ensuring stable operation of the equipment.
[0007] Optionally, the secondary side frame includes two groups of second outer shells; the primary side frame includes two groups of first inner shells, the two groups of first inner shells are respectively installed at both ends of the front side of the core body, and the second inner shells are installed at both ends of the rear side of the core body.
[0008] By adopting the above technical solution, the first inner shell and the second inner shell can be sleeved on the outer side of the core body.
[0009] Optionally, the top and bottom of the second inner shell near one end of the first inner shell are both connected to a first positioning block, and the end of the first inner shell near the second inner shell is provided with a first positioning groove that is plugged into and cooperates with the first positioning block.
[0010] By adopting the above technical solution, the first positioning block is inserted into the corresponding first positioning groove, so as to facilitate the quick splicing of the first inner shell and the second inner shell.
[0011] Optionally, both ends of the top of the second inner shell are threaded with first locking bolts, and the top of the first positioning block at the upper end is provided with a first screw hole matching the first locking bolt.
[0012] By adopting the above technical solution, the first locking bolt is screwed into the corresponding first screw hole, so that the first positioning block can be locked and fixed by the first locking bolt, so that the second inner shell and the first positioning block are more tightly connected.
[0013] Optionally, two groups of the second outer shells are respectively installed on the outsides of two groups of the first inner shells, and the first outer shells are installed on the outsides of the two groups of the second inner shells. The top and bottom of the first outer shells near one end of the second outer shells are connected to second positioning blocks, and the second outer shells near one end of the first outer shells are provided with a second positioning groove that is plugged into and cooperates with the second positioning block.
[0014] By adopting the above technical solution, the second positioning block is inserted into the corresponding second positioning groove, so as to facilitate the quick splicing of the first outer shell and the second outer shell, and make the first outer shell and the second outer shell sleeved on the outside of the original side frame.
[0015] Optionally, both ends of the top of the first outer shell are screwed with second locking bolts, and the top of the second positioning block at the upper end is provided with a second screw hole matching the second locking bolt.
[0016] By adopting the above technical solution, the second locking bolt is screwed into the corresponding second screw hole, so that the second positioning block can be locked and fixed by the second locking bolt, so that the first outer shell and the second outer shell are connected more firmly.
[0017] Optionally, the inner wall and the outer wall of the primary side frame are both connected with a first polyethylene anti-corrosion layer.
[0018] By adopting the above technical solution, the primary side frame can have stronger anti-corrosion performance, thereby extending the service life of the primary side frame.
[0019] Optionally, the inner wall and the outer wall of the secondary side frame are both connected with a second polyethylene anti-corrosion layer.
[0020] By adopting the above technical solution, the secondary side frame can have a stronger anti-corrosion performance, thereby extending the service life of the secondary side frame.
[0021] Optionally, the cross-section of the positioning rib is an L-shaped structure, and the outer side of the positioning rib is connected to the inner wall of the original side frame.
[0022] By adopting the above technical solution, the positioning ribs and the core body can be more closely connected.
[0023] The inner side of the positioning rib is clamped with the outer side of the core body.
[0024] By adopting the above technical solution, it is convenient to clamp the core body through multiple positioning ribs.
[0025] In summary, the present invention has at least one of the following beneficial effects:
[0026] (1) By setting a second heat dissipation channel between the core body and the primary frame and a first heat dissipation channel between the primary frame and the secondary frame, the circulation of insulating oil can be effectively promoted, thereby driving heat dissipation and reducing the temperature of the core body. It is possible to avoid transformer burnout and other faults caused by heating of the core body under high frequency and high power, thereby ensuring stable operation of the equipment.
[0027] (2) The first positioning groove, the first inner shell, the second inner shell and the first positioning block are arranged in coordination, so that the first inner shell and the second inner shell can be conveniently spliced together. The first outer shell, the second positioning groove, the second positioning block and the second outer shell are arranged in coordination, so that the first outer shell and the second outer shell can be conveniently spliced together. When the primary side frame and the secondary side frame fail, the primary side frame and the secondary side frame can be partially replaced, thereby reducing the maintenance cost of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0030] Figure 2 It is a schematic diagram of the top view and cross-section structure of the primary side frame and the secondary side frame of the utility model;
[0031] Figure 3 It is a schematic diagram of the top structure of the utility model.
[0032] In the figure: 1. iron core; 2. primary side frame; 201. first positioning groove; 202. first inner shell; 203. second inner shell; 204. first positioning block; 3. secondary side frame; 301. first outer shell; 302. second positioning groove; 303. second positioning block; 304. second outer shell; 4. first locking bolt; 5. second locking bolt; 6. first polyethylene anti-corrosion layer; 7. first screw hole; 8. second screw hole; 9. second polyethylene anti-corrosion layer; 10. positioning rib; 11. first heat dissipation channel; 12. second heat dissipation channel. DETAILED DESCRIPTION
[0033] The following is combined with Figure 1-3 The utility model is described in further detail.
[0034] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 The utility model provides an embodiment: an oil-immersed transformer core heat dissipation structure, including two groups of primary side skeletons 2, four inner corners of the two groups of primary side skeletons 2 are connected with positioning ribs 10, the core body 1 is clamped between the positioning ribs 10, the cross-section of the positioning ribs 10 is an L-shaped structure, the outer side of the positioning ribs 10 is connected to the inner wall of the primary side skeleton 2, so that the positioning ribs 10 and the core body 1 are more closely connected. The inner side of the positioning ribs 10 is clamped with the outer side of the core body 1. Thereby, it is convenient to clamp the core body 1 through multiple positioning ribs 10,
[0035] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The two sets of primary frame 2 are sleeved with the secondary frame 3 on the outside. The secondary frame 3 is fixed with other parts in the oil-immersed transformer. It is the prior art. The secondary frame 3 includes two sets of second outer shells 304. The primary frame 2 includes two sets of first inner shells 202. The two sets of first inner shells 202 are respectively installed at the two ends of the front side of the core body 1. The two ends of the rear side of the core body 1 are installed with the second inner shell 203. Therefore, the first inner shell 202 and the second inner shell 203 can be sleeved on the outside of the core body.
[0036] Please refer to the attached figure in the instruction manual Figure 2 and Figure 3The top and bottom of the second inner shell 203 near the first inner shell 202 are fixedly connected with a first positioning block 204, and the end of the first inner shell 202 near the second inner shell 203 is provided with a first positioning groove 201 that is plugged and matched with the first positioning block 204. The first positioning block 204 is plugged into the corresponding first positioning groove 201, so as to facilitate the quick splicing of the first inner shell 202 and the second inner shell 203.
[0037] Please refer to the attached figure in the instruction manual Figure 2 and Figure 3 The first locking bolts 4 are screwed at both ends of the top of the second inner shell 203, and the top of the first positioning block 204 at the upper end is provided with a first screw hole 7 that matches the first locking bolt 4. The first locking bolt 4 is screwed into the corresponding first screw hole 7, so that the first positioning block 204 can be locked and fixed by the first locking bolt 4, so that the second inner shell 203 and the first positioning block 204 are more tightly connected.
[0038] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The two groups of second outer shells 304 are respectively installed on the outside of the two groups of first inner shells 202, and the first outer shells 301 are installed on the outside of the two groups of second inner shells 203. The top and bottom of the first outer shell 301 near the second outer shell 304 are fixedly connected with the second positioning block 303, and the second outer shell 304 near the first outer shell 301 is provided with a second positioning groove 302 for plugging and matching with the second positioning block 303. The second positioning block 303 is plugged into the corresponding second positioning groove 302, so as to facilitate the quick splicing of the first outer shell 301 and the second outer shell 304, and the first outer shell 301 and the second outer shell 304 are sleeved on the outside of the original side frame 2.
[0039] Please refer to the attached figure in the instruction manual Figure 2 and Figure 3 The second locking bolts 5 are screwed at both ends of the top of the first outer shell 301, and the top of the second positioning block 303 at the upper end is provided with a second screw hole 8 that matches the second locking bolt 5. The second locking bolt 5 is screwed into the corresponding second screw hole 8, so that the second positioning block 303 can be locked and fixed by the second locking bolt 5, so that the first outer shell 301 and the second outer shell 304 are more firmly connected.
[0040] Please refer to the attached figure in the instruction manual Figure 2 and Figure 3A first heat dissipation channel 11 is provided between the primary frame 2 and the secondary frame 3, a second heat dissipation channel 12 is provided between the core body 1 and the primary frame 2, and the inner wall and the outer wall of the primary frame 2 are fixedly connected with a first polyethylene anti-corrosion layer 6, so that the primary frame 2 has a strong anti-corrosion performance, thereby extending the service life of the primary frame 2. The inner wall and the outer wall of the secondary frame 3 are fixedly connected with a second polyethylene anti-corrosion layer 9. Thus, the secondary frame 3 has a strong anti-corrosion performance, thereby extending the service life of the secondary frame 3.
[0041] Working principle: When in use, the first positioning block 204 is inserted into the corresponding first positioning groove 201, so that the first inner shell 202 and the second inner shell 203 are spliced, and then the first locking bolt 4 is screwed into the corresponding first screw hole 7, so that the first inner shell 202 and the second inner shell 203 are connected more firmly, and the positioning rib 10 is clamped with the outer side of the core body 1, so that the primary side frame 2 can be sleeved on the outer side of the core body 1, and then the second positioning block 303 is inserted into the corresponding second positioning groove 302, so that the first outer shell 301 and the second outer shell 304 are spliced, and the second locking bolt 5 is screwed into the corresponding second The screw hole 8 makes the first outer shell 301 and the second outer shell 304 more firmly connected, so that the secondary side frame 3 can be sleeved on the outside of the primary side frame 2, and a second heat dissipation channel 12 is set between the core body 1 and the primary side frame 2, and a first heat dissipation channel 11 is set between the primary side frame 2 and the secondary side frame 3, so that the transformer insulating oil can flow up and down along the first heat dissipation channel 11 and the second heat dissipation channel 12, driving the heat dissipation of the transformer core body 1, improving the heat dissipation performance and efficiency, and helping to reduce the temperature of the transformer oil tank, and avoiding the transformer burning out due to the heating of the core body 1 under high frequency and high power as much as possible, so as to ensure the stable operation of the equipment.
[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. An oil-immersed transformer core heat dissipation structure, comprising two sets of primary side frames (2), characterized in that: The four inner corners of the two groups of primary side frames (2) are connected with positioning ribs (10), the iron core body (1) is clamped between the positioning ribs (10), the outer sides of the two groups of primary side frames (2) are sleeved with secondary side frames (3), a first heat dissipation channel (11) is provided between the primary side frames (2) and the secondary side frames (3), and a second heat dissipation channel (12) is provided between the iron core body (1) and the primary side frames (2).
2. The oil-immersed transformer core heat dissipation structure according to claim 1, characterized in that: The secondary side frame (3) comprises two groups of second outer shells (304); the primary side frame (2) comprises two groups of first inner shells (202), the two groups of first inner shells (202) are respectively installed at two ends of the front side of the core body (1), and the second inner shells (203) are installed at both ends of the rear side of the core body (1).
3. The heat dissipation structure of an oil-immersed transformer core according to claim 2, characterized in that: The top and bottom of the second inner shell (203) close to one end of the first inner shell (202) are both connected to a first positioning block (204), and the end of the first inner shell (202) close to the second inner shell (203) is provided with a first positioning groove (201) for plugging and cooperating with the first positioning block (204).
4. The heat dissipation structure of an oil-immersed transformer core according to claim 3, characterized in that: Both ends of the top of the second inner shell (203) are screwed with first locking bolts (4), and the top of the first positioning block (204) at the upper end is provided with a first screw hole (7) that matches the first locking bolt (4).
5. The heat dissipation structure of an oil-immersed transformer core according to claim 2, characterized in that: The two groups of the second outer shells (304) are respectively installed on the outsides of the two groups of the first inner shells (202); the first outer shells (301) are installed on the outsides of the two groups of the second inner shells (203); the top and bottom of the first outer shell (301) close to one end of the second outer shell (304) are connected to second positioning blocks (303); and the second outer shell (304) close to one end of the first outer shell (301) is provided with a second positioning groove (302) for plugging and matching with the second positioning block (303).
6. The heat dissipation structure of an oil-immersed transformer core according to claim 5, characterized in that: The two ends of the top of the first outer shell (301) are both screwed with second locking bolts (5), and the top of the second positioning block (303) at the upper end is provided with a second screw hole (8) matching the second locking bolt (5).
7. The heat dissipation structure of an oil-immersed transformer core according to claim 1, characterized in that: The inner wall and the outer wall of the primary side frame (2) are both connected with a first polyethylene anti-corrosion layer (6).
8. The heat dissipation structure of an oil-immersed transformer core according to claim 1, characterized in that: The inner wall and the outer wall of the secondary side frame (3) are both connected with a second polyethylene anti-corrosion layer (9).
9. The heat dissipation structure of an oil-immersed transformer core according to claim 1, characterized in that: The cross section of the positioning rib (10) is an L-shaped structure, and the outer side of the positioning rib (10) is connected to the inner wall of the primary side frame (2).
10. The oil-immersed transformer core heat dissipation structure according to claim 9, characterized in that: The inner side of the positioning rib (10) is clamped with the outer side of the iron core body (1).