Oil-immersed roll-core transformer

Abstract

The invention relates to the field of transformers, and discloses an oil-immersed roll-core transformer which comprises a supporting base and two stand columns, a transformer body is fixedly installed at the top of the supporting base, and an oil conservator is installed at one end of the transformer body. The lightning rod replacement device is provided with the storage box, the pushing structure, the resistance detection assembly and the pulling structure, a lightning rod to be replaced is placed in the storage box, when the resistance detection assembly detects that the working lightning rod goes wrong, a signal is transmitted to the controller, and the controller transmits the signal to the pulling structure; the pulling structure pulls and moves away the lightning rod at the position of the limiting base, the pushing structure pushes the lightning rod to be replaced in the storage box to the position of the limiting base, replacement of the damaged lightning rod is completed, flexibility is better, and the transformer is better protected.

Description

Technical Field

[0001] The present invention relates to the field of transformers, in particular to an oil-immersed wound iron 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-dimensional wound core has three core legs arranged in an equilateral triangle. There is no air gap in the magnetic circuit, the winding is tighter, the three magnetic circuits are of the same length and are all the shortest. The cross-sectional area of ​​the core legs is closer to a circle, so the performance is further improved, the loss is reduced, the noise is reduced, the three items are balanced, and the third harmonic component is reduced.

[0003] Some outdoor transformers use two columns as support columns, and then install the transformer between the two columns. A lightning rod is installed on the top of the transformer to protect the transformer. The lightning rod is exposed outdoors for a long time and damage cannot be discovered in time, which will affect the effectiveness of the lightning rod and reduce the protection effect on the transformer. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides an oil-immersed wound core transformer.

[0005] The present invention provides an oil-immersed wound core transformer adopting the following technical solutions: The top of the transformer body is fixed with a transformer body, one end of the transformer body is installed with an oil pillow, and a plurality of heat dissipation fins are provided on the outer wall of the transformer body. A storage box for storing a lightning rod is installed on the top of the transformer body, and a pushing structure for pushing and removing the lightning rod is provided on the storage box. A limit seat for installing the lightning rod is installed on the top of the transformer body, and a first telescopic cylinder is installed on the side wall of the limit seat, and the output end of the first telescopic cylinder is installed between the limit flange, and the limit flange is inserted into the corresponding limit hole opened on the lightning rod. A shielding structure for shielding the lightning rod is installed on the limit seat, and a resistance detection component for detecting the resistance on the lightning rod is provided on the shielding structure. A pulling structure for pulling out the lightning rod is also provided on the top of the transformer body, and a lifting structure is fixedly installed on the top of the support seat, and the lifting structure drives the protective frame to move up and down; Both ends of the support base are provided with movable support structures, and the movable support structures are used to fix the connecting base.

[0006] Preferably, the pushing structure includes a first cylinder installed on the outer wall of the storage box, the output end of the first cylinder is connected to one end of the pushing block, and the pushing block is placed in the storage box.

[0007] Preferably, a movable door is installed at an opening of the storage box, and a driving structure for moving the movable door back and forth is installed on the storage box, and the driving structure includes a connecting support installed on the outer wall of the storage box, and a forward and reverse motor is fixedly installed on the top of the connecting support, and the output end of the forward and reverse motor is connected to the transmission shaft, and one end of the transmission shaft is installed on a bearing seat installed on another connecting support through a bearing, and a transmission gear is installed on the transmission shaft, and the transmission gear is meshed with a rack installed on one side wall of the movable door.

[0008] Preferably, the shielding structure includes a support block installed on the top of the limit seat, a second cylinder is installed on the side wall of the support block, the output end of the second cylinder is connected to the side wall of the protective cover, and a third telescopic cylinder is also installed on the side wall of the support block, the output end of the third telescopic cylinder is connected to the short rod, and one end of the short rod is inserted into the protective cover and connected to the resistance detection component, the resistance detection component includes a resistance detection head, the resistance detection head is connected to the short rod, the resistance detection head is attached to the outer wall of the lightning rod, and one end of the resistance detection head is connected to the resistance detector through a wire.

[0009] Preferably, the pulling structure includes a socket installed on the top of the transformer body, a third cylinder is installed on the top of the socket, the output end of the third cylinder is connected to the L-shaped block, and a second telescopic cylinder is installed at the bottom of the L-shaped block, and the output end of the second telescopic cylinder is installed between the limit protrusion, and the limit protrusion can be inserted into the corresponding through hole opened on the protrusion, and the protrusion is installed on the outer wall of the lightning rod.

[0010] Preferably, the movable support structure includes a fixed seat installed at both ends of the support seat, the fixed seat is provided with a slot, a screw for rotation is provided in the slot, one end of the screw is installed with a bearing and a bearing seat installed on the inner wall of the slot, the screw and the wire sleeve seat are adapted to be installed, and a connecting seat is installed on the top of the wire sleeve seat, the connecting seat and the connecting clamping seat are fixedly installed by bolts, one end of the connecting clamping seat is fixedly installed with the clamping joint, one end of the clamping joint is provided with a first locking hoop, and the first locking hoop and the second locking hoop are fixedly installed on the column by a locking bolt.

[0011] Preferably, the lifting structure includes an L-shaped seat installed on the top of the support seat, a servo motor is installed on the top of the L-shaped seat, the output end of the servo motor is connected to the output end of the screw rod, one end of the screw rod is installed with a bearing seat installed on the top of the support seat through a bearing, the screw rod is also adapted to be installed between the screw sleeve block, and the screw sleeve block is fixedly installed on the protective frame.

[0012] Preferably, water spray main pipes are provided on the four inner walls of the protective frame, a plurality of water spray branches are provided on the water spray main pipes, a plurality of water spray heads are provided on the water spray branches, the water spray branches are located between two adjacent heat dissipation fins, and a plurality of protective strips are provided at the bottom of the protective frame, and the protective strips pass through corresponding through holes opened on the support seat.

[0013] In summary, the present invention has the following beneficial technical effects: The present invention is provided with a storage box, a pushing structure, a resistance detection component and a pulling structure. A lightning rod to be replaced is placed in the storage box. When the resistance detection component detects a problem with the working lightning rod, it transmits a signal to the controller. The controller transmits the signal to the pulling structure. The pulling structure pulls and removes the lightning rod at the limit seat, and the pushing structure pushes the lightning rod to be replaced in the storage box to the limit seat, thereby completing the replacement of the damaged lightning rod. The device has better flexibility and better protection for the transformer. The present invention is provided with a shielding structure at the limit seat, which can shield the lightning rod on the transformer under sunny conditions, thereby achieving a good protection effect on the lightning rod; The present invention is provided with a movable support structure at both ends of the support seat, and the movable support structure is provided with a screw, a wire sleeve seat, and a connecting seat. After the screw is rotated, the wire sleeve seat installed in matching with it will also move accordingly, and the connecting seat will also move accordingly, so that the position adjustment of the locking hoop installation on the column is more flexible, thereby improving the flexibility of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 1 is a structural diagram of an oil-immersed wound core transformer according to an embodiment of the present invention; Figure 2 is a schematic diagram of the position structure of the protection strip in an embodiment of the present invention; Figure 3 This is a schematic diagram of the position structure of the oil pillow in an embodiment of the present invention; Figure 4 2. It is a schematic diagram of the position structure of the protective frame in an embodiment of the present invention; Figure 5 In the embodiment of the present invention Figure 1 A magnified view of the structure at point A; Figure 6 In the embodiment of the present invention Figure 2 A magnified view of the structure at point B; Figure 7 In the embodiment of the present invention Figure 1 A magnified view of the structure at point C; Figure 8 In the embodiment of the present invention Figure 3 Enlarged view of the structure at point D.

[0015] Explanation of the accompanying symbols: 1. Support seat; 2. Transformer body; 3. Storage box; 4. First cylinder; 5. Limit seat; 6. Support block; 7. Second cylinder; 8. Protective cover; 9. Lightning rod; 10. L-shaped seat; 11. Oil pillow; 12. Servo motor; 13. Screw rod; 14. Sleeve block; 15. Heat dissipation fin; 16. Protective frame; 17. Water spray main pipe; 18. Water spray branch pipe; 19. Protective strip; 20. Connecting card seat; 21. Card joint; 22. First locking hoop ; 23. Second locking hoop; 24. Post; 25. Fixed seat; 26. Slot; 27. Screw; 28. Connecting seat; 29. ​​First telescopic cylinder; 30. Clamping seat; 31. Third cylinder; 32. L-shaped block; 33. Second telescopic cylinder; 34. Limiting convex head; 35. Convex block; 36. Pushing block; 37. Connecting support; 38. Rack; 39. Forward and reverse motor; 40. Transmission gear; 41. Moving door; 42. Third telescopic cylinder; 43. Resistance detection head. DETAILED DESCRIPTION

[0016] The following is combined with Figures 1-8 The present invention is described in further detail.

[0017] The embodiment of the present invention discloses an oil-immersed wound core transformer, comprising a support base 1 and two columns 24. A transformer body 2 is fixedly mounted on the top of the support base 1, an oil pillow 11 is mounted on one end of the transformer body 2, a plurality of heat dissipation fins 15 are arranged on the outer wall of the transformer body 2, a storage box 3 for storing a lightning rod 9 is mounted on the top of the transformer body 2, a pushing structure for pushing the lightning rod 9 out is arranged on the storage box 3, a limit seat 5 for mounting the lightning rod 9 is mounted on the top of the transformer body 2, a first telescopic cylinder 29 is mounted on the side wall of the limit seat 5, the output end of the first telescopic cylinder 29 is mounted between the limit flange, and the limit flange Insert it into the corresponding limit hole opened on the lightning rod 9, a shielding structure for shielding the lightning rod 9 is installed on the limit seat 5, and a resistance detection component for detecting the resistance on the lightning rod 9 is provided on the shielding structure. A pulling structure for pulling out the lightning rod 9 is also provided on the top of the transformer body 2. When the resistance detection head 43 in the resistance detection component detects an abnormality in the resistance on the lightning rod 9, the signal is transmitted to the second cylinder 7, the third telescopic cylinder 42, and the pulling structure. The second cylinder 7 works to slowly pull back the corresponding protective cover 8, so that the lightning rod 9 is in an exposed position, and the third telescopic cylinder 42 drives the resistance detection head 4 3 is removed from the lightning rod 9, and the second telescopic cylinder 33 in the pulling structure works, so that the limiting protrusion 34 penetrates the limiting hole on the protrusion 35. The third cylinder 31 works, driving the L-shaped block 32 to slowly pull back and move, slowly pulling out the lightning rod 9 in the limiting seat 5. Under the action of the driving structure, the movable door 41 at the opening of the storage box 3 is slowly moved away, and the first cylinder 4 in the pushing structure works, driving the pushing block 36 to move, slowly pushing out the lightning rod 9 in the storage box 3 and pushing it into the installation position at the limiting seat 5. The first telescopic cylinder 29 works, driving the limiting flange to insert into the corresponding limiting hole at the lightning rod 9, limiting the lightning rod 9 The position is fixed to complete the replacement of the lightning rod 9. A lifting structure is fixedly installed on the top of the support seat 1, and the lifting structure drives the protective frame 16 to move up and down; a movable support structure is provided at both ends of the support seat 1, and the movable support structure fixes the connecting base 20. The first locking hoop 22 and the second locking hoop 23 can be fixedly installed on the corresponding column 24 under the action of the locking bolt, and then the corresponding screw 27 is rotated. After the screw 27 is rotated, the connecting seat 28 fixedly installed on the top of the wire sleeve seat will move accordingly, so that the position of the connecting seat 28 is moved, and it is better coordinated with the connecting base 20, which improves convenience during the installation process.

[0018] See Figure 1 、 Figure 2 and Figure 6The pushing structure includes a first cylinder 4 installed on the outer wall of the storage box 3, the output end of the first cylinder 4 is connected to one end of the pushing block 36, and the pushing block 36 is placed in the storage box 3, and a movable door 41 is installed at an opening of the storage box 3. The storage box 3 is provided with a driving structure for moving the movable door 41 back and forth, and the driving structure includes a connecting support 37 installed on the outer wall of the storage box 3, and a forward and reverse motor 39 is fixedly installed on the top of the connecting support 37. The output end of the forward and reverse motor 39 is connected to the transmission shaft, and one end of the transmission shaft is installed on the bearing seat installed on the other connecting support 37 through a bearing. A transmission gear 40 is installed on the transmission shaft, and the transmission gear 40 is meshed with a rack 38 installed on one side wall of the movable door 41.

[0019] See Figure 1 、 Figure 2 、 Figure 3 and Figure 7 The shielding structure includes a support block 6 installed on the top of the limit seat 5, and a second cylinder 7 is installed on the side wall of the support block 6. The output end of the second cylinder 7 is connected to the side wall of the protective cover 8. A third telescopic cylinder 42 is also installed on the side wall of the support block 6. The output end of the third telescopic cylinder 42 is connected to the short rod, and one end of the short rod is inserted into the protective cover 8 and connected to the resistance detection component. The resistance detection component includes a resistance detection head 43, which is connected to the short rod. The resistance detection head 43 is attached to the outer wall of the lightning rod 9, and one end of the resistance detection head 43 is connected to the resistance detector through a wire. When the resistance detection head 43 in the resistance detection component detects that the resistance on the lightning rod 9 is abnormal, the signal is transmitted to the second cylinder 7, the third telescopic cylinder 42, and the pulling structure, and the second cylinder 7 works to pull the corresponding The protective cover 8 is slowly pulled back, so that the lightning rod 9 is in an exposed position. Moreover, the third telescopic cylinder 42 drives the resistance detection head 43 to move away from the lightning rod 9, and the second telescopic cylinder 33 in the pulling structure works, so that the limiting protrusion 34 penetrates into the limiting hole on the protrusion 35. The third cylinder 31 works, driving the L-shaped block 32 to slowly pull back and move, and slowly pull out the lightning rod 9 in the limiting seat 5. Under the action of the driving structure, the movable door 41 at an opening of the storage box 3 is slowly moved away, and the first cylinder 4 in the pushing structure works, driving the pushing block 36 to move, and slowly pushing the lightning rod 9 in the storage box 3 out and pushing it into the installation position at the limiting seat 5. The first telescopic cylinder 29 works, driving the limiting flange to insert into the corresponding limiting hole at the lightning rod 9, and limiting and fixing the lightning rod 9 to complete the replacement of the lightning rod 9.

[0020] See Figure 1 、 Figure 2 and Figure 5The pulling structure includes a base 30 installed on the top of the transformer body 2, and a third cylinder 31 is installed on the top of the base 30. The output end of the third cylinder 31 is connected to the L-shaped block 32, and a second telescopic cylinder 33 is installed at the bottom of the L-shaped block 32. The output end of the second telescopic cylinder 33 of Susonghu is installed between the limit protrusion 34, and the limit protrusion 34 can be inserted into the corresponding through hole opened on the protrusion 35, and the protrusion 35 is installed on the outer wall of the lightning rod 9. The second telescopic cylinder 33 in the pulling structure works, so that the limit protrusion 34 penetrates into the limit hole on the protrusion 35, and the third cylinder 31 works, driving the L-shaped block 32 to slowly pull back and slowly pull out the lightning rod 9 in the limit seat 5.

[0021] See Figure 1 and Figure 2 The mobile support structure includes a fixed base 25 installed at both ends of the support base 1, and a slot 26 is provided on the fixed base 25. A screw 27 for rotation is provided in the slot 26, and one end of the screw 27 is installed with a bearing and a bearing seat installed on the inner wall of the slot 26 through a bearing. The screw 27 is adapted to be installed between the screw sleeve seat, and a connecting base 28 is installed on the top of the screw sleeve seat. The connecting base 28 is fixed to the connecting base 20 by bolts, and one end of the connecting base 20 is fixed to the card joint 21. A first locking hoop 22 is provided at one end of the card joint 21, and the first locking hoop 22 and the second locking hoop 23 are fixed to the column 24 by locking bolts.

[0022] See Figure 1 and Figure 2 The lifting structure includes an L-shaped seat 10 installed on the top of the support seat 1, and a servo motor 12 is installed on the top of the L-shaped seat 10. The output end of the servo motor 12 is connected to the output end of the screw rod 13. One end of the screw rod 13 is installed with a bearing and a bearing seat installed on the top of the support seat 1. The screw rod 13 is also adapted to be installed between the threaded sleeve block 14. The threaded sleeve block 14 is fixedly installed on the protective frame 16. A water spray main pipe 17 is provided on the four inner walls of the protective frame 16. A plurality of water spray branch pipes 18 are provided on the water spray main pipe 17. A plurality of water spray heads are provided on the water spray branch pipe 18. The water spray branch pipe 18 is located between two adjacent heat dissipating fins 15. A plurality of protective strips 19 are provided at the bottom of the protective frame 16. The protective strips 19 pass through the corresponding through holes opened on the support seat 1.

[0023] The implementation principle of an oil-immersed wound core transformer in an embodiment of the present invention is as follows: the support seat 1 needs to be fixedly installed on the column 24 so that the transformer body 2 is in the air. The first locking hoop 22 and the second locking hoop 23 can be fixedly installed on the corresponding column 24 under the action of the locking bolt, and then the corresponding screw 27 is rotated. After the screw 27 rotates, the connecting seat 28 fixedly installed on the top of the wire sleeve seat will move accordingly, so that the position of the connecting seat 28 is moved, and it is better coordinated with the connecting bracket 20, which improves convenience during the installation process. When the resistance detection head 43 in the resistance detection assembly detects that the resistance on the lightning rod 9 is abnormal, the signal is transmitted to the second cylinder 7, the third telescopic cylinder 42, and the pulling structure. The second cylinder 7 works to slowly pull back the corresponding protective cover 8, so that the lightning rod 9 is in an exposed position. Moreover, the third telescopic cylinder 42 drives the resistance detection head 43 to move away from the lightning rod 9, and the second telescopic cylinder 33 in the pulling structure works, so that the limit The convex head 34 penetrates into the limiting hole on the convex block 35, and the third cylinder 31 works, driving the L-shaped block 32 to slowly pull back and move, slowly pulling out the lightning rod 9 in the limiting seat 5. Under the action of the driving structure, the movable door 41 at the opening of the storage box 3 is slowly moved away, and the first cylinder 4 in the pushing structure works, driving the pushing block 36 to move, slowly pushing out the lightning rod 9 in the storage box 3 and pushing it into the installation position at the limiting seat 5. The first telescopic cylinder 29 works, driving the limiting flange to be inserted into the lightning rod The lightning rod 9 is limited and fixed in the corresponding limiting holes at 9 to complete the replacement of the lightning rod 9. When it is necessary to cool the heat dissipating fins 15 on the side wall of the transformer body 2, the servo motor 12 in the lifting structure works to drive the screw rod 13 to rotate. When the screw rod 13 rotates, the protective frame 16 will move up and down, and a water spray pipe 17 is installed on the inner wall of the protective frame 16. The water spray branch pipe 18 on the water spray pipe 17 will spray water, which cools the heat dissipating fins 15 while also removing dust.

[0024] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oil-immersed wound iron core transformer, comprising a support base (1) and two columns (24), wherein a transformer body (2) is fixedly mounted on the top of the support base (1), an oil pillow (11) is mounted on one end of the transformer body (2), and a plurality of heat dissipation fins (15) are provided on the outer wall of the transformer body (2), characterized in that: A storage box (3) for storing the lightning rod (9) is installed on the top of the transformer body (2), and a pushing structure for pushing the lightning rod (9) out is provided on the storage box (3). A limit seat (5) for installing the lightning rod (9) is installed on the top of the transformer body (2), and a first telescopic cylinder (29) is installed on the side wall of the limit seat (5). The output end of the first telescopic cylinder (29) is installed between the limit flange, and the limit flange is inserted into the corresponding limit hole opened on the lightning rod (9). A shielding structure for shielding the lightning rod (9) is installed on the limit seat (5), and a resistance detection component for detecting the resistance on the lightning rod (9) is provided on the shielding structure. A pulling structure for pulling out the lightning rod (9) is also provided on the top of the transformer body (2). A lifting structure is fixedly installed on the top of the support seat (1), and the lifting structure drives the protective frame (16) to move up and down; Both ends of the support seat (1) are provided with movable support structures, and the movable support structures are used to fix the connecting seat (20).

2. The oil-immersed wound core transformer according to claim 1, characterized in that: The pushing structure comprises a first cylinder (4) mounted on the outer wall of the storage box (3), an output end of the first cylinder (4) is connected to one end of a pushing block (36), and the pushing block (36) is placed in the storage box (3).

3. The oil-immersed wound core transformer according to claim 1, characterized in that: A movable door (41) is installed at an opening of the storage box (3), and a driving structure for moving the movable door (41) back and forth is installed on the storage box (3), and the driving structure includes a connecting support (37) installed on the outer wall of the storage box (3), and a forward and reverse motor (39) is fixedly installed on the top of the connecting support (37), and the output end of the forward and reverse motor (39) is connected to the transmission shaft, and one end of the transmission shaft is installed with a bearing seat installed on the other connecting support (37) through a bearing, and a transmission gear (40) is installed on the transmission shaft, and the transmission gear (40) is meshed with a rack (38) installed on a side wall of the movable door (41).

4. The oil-immersed wound core transformer according to claim 1, characterized in that: The shielding structure includes a support block (6) installed on the top of the limit seat (5), a second cylinder (7) is installed on the side wall of the support block (6), the output end of the second cylinder (7) is connected to the side wall of the protective cover (8), and a third telescopic cylinder (42) is also installed on the side wall of the support block (6), the output end of the third telescopic cylinder (42) is connected to the short rod, and one end of the short rod is inserted into the protective cover (8) and connected to the resistance detection component, the resistance detection component includes a resistance detection head (43), the resistance detection head (43) is connected to the short rod, the resistance detection head (43) is attached to the outer wall of the lightning rod (9), and one end of the resistance detection head (43) is connected to the resistance detector through a wire.

5. The oil-immersed wound core transformer according to claim 1, characterized in that: The pulling structure includes a base (30) installed on the top of the transformer body (2), a third cylinder (31) is installed on the top of the base (30), the output end of the third cylinder (31) is connected to the L-shaped block (32), a second telescopic cylinder (33) is installed at the bottom of the L-shaped block (32), the output end of the second telescopic cylinder (33) is installed between the limit convex head (34), the limit convex head (34) can be inserted into the corresponding through hole opened on the convex head (35), and the convex head (35) is installed on the outer wall of the lightning rod (9).

6. The oil-immersed wound core transformer according to claim 1, characterized in that: The movable support structure includes a fixed seat (25) installed at both ends of the support seat (1), a slot (26) is provided on the fixed seat (25), a screw (27) for rotation is provided in the slot (26), one end of the screw (27) is installed with a bearing seat installed on the inner wall of the slot (26) through a bearing, the screw (27) is adapted to be installed between the screw and the thread sleeve seat, and a connecting seat (28) is installed on the top of the thread sleeve seat, the connecting seat (28) is fixedly installed with the connecting card seat (20) by bolts, one end of the connecting card seat (20) is fixedly installed with the clamping joint (21), one end of the clamping joint (21) is provided with a first locking hoop (22), and the first locking hoop (22) and the second locking hoop (23) are fixedly installed on the column (24) by locking bolts.

7. The oil-immersed wound core transformer according to claim 1, characterized in that: The lifting structure includes an L-shaped seat (10) installed on the top of the support seat (1), a servo motor (12) is installed on the top of the L-shaped seat (10), the output end of the servo motor (12) is connected to the output end of the screw rod (13), one end of the screw rod (13) is installed with a bearing seat installed on the top of the support seat (1), and the screw rod (13) is also adapted to be installed between the screw rod (13) and the screw rod block (14), and the screw rod block (14) is fixedly installed on the protective frame (16).

8. The oil-immersed wound core transformer according to claim 7, characterized in that: Water spray main pipes (17) are provided on the four inner walls of the protection frame (16), a plurality of water spray branch pipes (18) are provided on the water spray main pipe (17), a plurality of water spray heads are provided on the water spray branch pipes (18), and the water spray branch pipes (18) are located between two adjacent heat dissipation fins (15). A plurality of protection strips (19) are provided at the bottom of the protection frame (16), and the protection strips (19) pass through corresponding through holes opened on the support seat (1).

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