Oil-immersed transformer for hydraulic engineering

Abstract

The invention relates to the field of oil-immersed transformers, and discloses an oil-immersed transformer for hydraulic engineering, which comprises a transformer main body, supporting plates are arranged on both sides of the lower surface of the transformer main body, the supporting plates are arranged on a transfer structure, a mounting seat is fastened on the right side of the upper surface of the transformer main body through bolts, and an oil tank is arranged on the mounting seat. The oil tank is connected with an oil conveying pipe, after the transformer is installed, the first cooling fins can be automatically driven to move upwards through the driving structure and the staggered structure, the second cooling fins can be automatically driven to move downwards synchronously, air inducing plates are arranged on the first cooling fins and the second cooling fins, and therefore external air flow can flow between the first cooling fins and the second cooling fins better; therefore, heat on the first radiating fins and the second radiating fins can be driven more quickly, and the radiating effect is improved. Due to the arrangement of the connecting structure, the first cooling fins and the second cooling fins can be conveniently and independently maintained or replaced on the transformer main body when the connection is removed, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of oil-immersed transformers, and in particular to an oil-immersed transformer for hydraulic engineering. Background Technology

[0002] Oil-immersed transformers generally consist of two parts: the transformer body and the oil tank. They typically employ three cooling methods: oil-immersed self-cooling, oil-immersed air-cooling, and forced oil circulation. They are characterized by strong heat dissipation performance, low manufacturing and maintenance costs, and relatively convenient recycling. They are suitable for outdoor and relatively harsh environments, such as places requiring waterproofing, pole-mounted locations, and outdoor environments. In the existing technology, oil-immersed transformers used in water conservancy projects are reinforced by adding reinforcing pads to strengthen the channel steel of the transformer, increasing the contact area with the vibration damping device, making the support of the transformer more stable. In addition, by setting up waterproof vibration damping devices, when the transformer shakes during operation, the vibration damping system can reduce its vibration, so that the transformer can be quickly stabilized and prevented from being damaged. In existing technology, transformers dissipate heat through heat sinks. However, the heat sinks are generally arranged in an array on the outer surface of the transformer body. Due to the small gaps between the heat sinks, airflow between them is not smooth, resulting in low heat dissipation efficiency. Furthermore, during installation, the transformer is heavy and requires a lifting structure, which increases installation costs and reduces installation efficiency. Therefore, there are areas for improvement. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides an oil-immersed transformer for hydraulic engineering.

[0004] The oil-immersed transformer for water conservancy projects provided by this invention adopts the following technical solution: An oil-immersed transformer for water conservancy projects includes a transformer body, with support plates on both sides of the transformer body. The support plates are mounted on a transfer structure. A mounting base is fastened to the upper right side of the transformer body by bolts. An oil tank is mounted on the mounting base, and an oil delivery pipe is connected to the oil tank and inserted into the transformer body. First heat sinks and second heat sinks are provided on all four sides of the transformer body. The first and second heat sinks in each group are spaced apart from each other, and the first and second heat sinks are staggered on the transformer body. The staggered structure includes mounting slots on the four sides of the transformer body, each mounting slot is equipped with a heat sink plate, and each heat sink plate has multiple vertical slots at equal intervals. The first heat sink and the second heat sink are slidably disposed in the corresponding vertical slots. The rear sides of each group of the first heat sink and the second heat sink are respectively connected to two lifting bars. A drive structure is provided at the corner of the side of the transformer body. Air guide plates are provided at the top of both sides of the first heat sink and at the bottom of both sides of the second heat sink, and the end face of the air guide plate is triangular.

[0005] Preferably, the drive structure includes four sets of fixing blocks connected to the four corners of the transformer body. Three sets of fixing blocks are connected to vertical rods, and each of the other fixing blocks is rotatably connected to a first threaded rod. Lifting sleeves are fitted on the first threaded rods and the vertical rods near their ends. The inner walls of the two lifting sleeves are provided with threads that match the first threaded rods. A connection structure is provided between the lifting sleeves and the lifting bars. The two first threaded rods are connected to the two output ends of the first motor at one end near each other. The first motor is fixedly mounted in the mounting sleeve, and the mounting sleeve is fixedly mounted on the transformer body.

[0006] Preferably, the connecting structure includes a Z-shaped strip fixedly connected to the lifting sleeve, one end of the Z-shaped strip is movably fitted with a sleeve frame, a spring is connected between the inner wall of the sleeve frame and the Z-shaped strip, and slots are provided at both ends of the lifting strip, with one end of the sleeve frame movably inserted into the slot.

[0007] Preferably, the transfer structure includes a movable seat disposed under the transformer body, a stop structure disposed on the movable seat, the movable seat being U-shaped, two fixed plates connected to the upper front edge of the movable seat, a push rod disposed between the two fixed plates, a lifting structure disposed between the movable seat and the support plate, and rollers disposed at both ends of the side of the movable seat.

[0008] Preferably, the lifting structure includes grooves formed on the left and right sides of the movable base. A bidirectional screw is rotatably connected between the front and rear end walls of each groove. The two ends of the bidirectional screw have opposite thread directions. A second motor is installed on each of the two rear end faces of the movable base. One end of the output shaft of the second motor is connected to the bidirectional screw. Two movable blocks are slidably arranged in the grooves. Each movable block has a threaded groove for the bidirectional screw to pass through. A U-shaped seat is provided at one end of each movable block. A lifting plate is rotatably installed in the U-shaped seat. One end of the lifting plate is mounted on the support plate through a plug-in structure.

[0009] Preferably, the plug-in structure includes a fixed seat welded inside the support plate, an installation rod movably inserted into the fixed seat, the installation rod being threaded, one end of the installation rod being screwed into a threaded groove opened on the inner wall of the fixed seat, the other end of the installation rod being provided with a rotating block, and one end of the lifting plate being movably sleeved on the installation rod.

[0010] Preferably, the stop structure includes a second threaded rod rotatably connected to the movable seat, a lifting ring being rotatably sleeved on the second threaded rod, a lifting frame being fixedly installed on the lifting ring, the lifting frame being movable through a through slot opened on the movable seat, a stop plate being installed at the bottom end of the lifting frame, and a rotating wheel being provided at the top end of the second threaded rod.

[0011] In summary, the present invention has the following beneficial technical effects: This invention employs a staggered structure, a driving structure, and a connecting arrangement of multiple sets of first and second heat sinks. After transformer installation, the driving and staggered structures automatically move the first heat sinks upwards while the second heat sinks move downwards simultaneously. Both the first and second heat sinks are equipped with air guide plates, allowing for better airflow between them, thus accelerating heat dissipation and improving heat dissipation. Furthermore, the connecting structure facilitates individual maintenance or replacement of the first and second heat sinks on the transformer body during disconnection, reducing costs. Simultaneously, during transformer relocation or installation, the driving and staggered structures move the first and second heat sinks synchronously towards each other, preventing them from obstructing the installation or relocation process. This invention, by incorporating a transfer structure, a lifting structure, a plug-in structure, and a rotating structure, allows the transfer structure to be moved to the transformer's location. The plug-in structure then connects the lifting structure to the transformer, enabling the transformer body to be lifted from the ground. The transfer structure facilitates the movement of the transformer, and the lifting structure automatically lifts the transformer to its installation position, making operation more convenient and reducing installation costs. Furthermore, after disconnecting the plug-in structure, the connection between the transfer structure and the installed transformer can be severed, allowing the disassembled transfer and lifting structures to be reused. The invention is simple in structure and practical in function. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an oil-immersed transformer for water conservancy projects according to an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view of the structure at point A; Figure 3 This is a schematic diagram of the structure at the rear of an oil-immersed transformer for water conservancy projects according to an embodiment of the present invention; Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged view of the structure at point B; Figure 5 This is a structural schematic diagram of the transformer body in an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged view of the structure at point C; Figure 7 This is a schematic diagram of the structure below the transformer body in an embodiment of the present invention.

[0013] Explanation of reference numerals in the attached drawings: 1. Transformer body; 2. Mounting base; 3. Oil tank; 4. Oil supply pipe; 5. First heat sink; 6. Second heat sink; 7. Air intake plate; 8. Support plate; 9. Vertical slot; 10. Heat dissipation plate; 11. Fixing block; 12. Vertical rod; 13. Lifting bar; 14. Lifting sleeve; 15. Mounting sleeve; 16. First motor; 17. First threaded rod; 18. Z-shaped bar; 19. Sleeve frame; 20. Slot; 21. Moving base; 22. Fixing plate; 23. Push rod; 24. Second motor; 25. Bidirectional screw; 26. Groove; 27. Moving block; 28. U-shaped seat; 29. ​​Lifting plate; 30. Mounting rod; 31. Fixing base; 32. Rotating block; 33. Second threaded rod; 34. Lifting ring; 35. Lifting frame; 36. Through slot; 37. Rotating wheel; 38. Stop plate; 39. Roller. Detailed Implementation

[0014] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0015] This invention discloses an oil-immersed transformer for hydraulic engineering. (Refer to...) Figures 1-7 An oil-immersed transformer for water conservancy projects includes a transformer body 1, with support plates 8 on both sides of the transformer body 1. The support plates 8 are mounted on a transfer structure. A mounting base 2 is fastened to the upper right side of the transformer body 1 by bolts. An oil tank 3 is mounted on the mounting base 2. An oil supply pipe 4 is connected to the oil tank 3 and inserted into the transformer body 1. First heat sinks 5 and second heat sinks 6 are provided on all four sides of the transformer body 1. The first heat sinks 5 and second heat sinks 6 in each group are spaced apart from each other. The first heat sinks 5 and second heat sinks 6 are staggered on the transformer body 1. The staggered structure includes mounting slots on the four sides of the transformer body 1. Each mounting slot is equipped with a heat sink 10. Each heat sink 10 has multiple vertical slots 9 at equal intervals. The first heat sink 5 and the second heat sink 6 are slidably arranged in the corresponding vertical slots 9. The rear sides of each group of the first heat sink 5 and the second heat sink 6 are respectively connected to two lifting bars 13. A drive structure is set at the corner of the side of the transformer body 1. Air guide plates 7 are provided at the top of both sides of the first heat sink 5 and at the bottom of both sides of the second heat sink 6. The end face of the air guide plate 7 is triangular. The drive structure includes four sets of fixing blocks 11 connected to the four corners of the transformer body 1. Three sets of fixing blocks 11 are connected to vertical rods 12. Each fixing block 11 in the other set is rotatably connected to a first threaded rod 17. Lifting sleeves 14 are fitted on the first threaded rod 17 and the vertical rod 12 near both ends. The inner walls of the two lifting sleeves 14 are provided with threads that match the first threaded rods 17. A connection structure is provided between the lifting sleeves 14 and the lifting bars 13. The two first threaded rods 17 are connected to the two output ends of the first motor 16 near one end. The first motor 16 is fixedly installed in the mounting sleeve 15. The mounting sleeve 15 is fixedly installed on the transformer body 1. The connecting structure includes a Z-shaped strip 18 fixedly connected to the lifting sleeve 14. A sleeve frame 19 is movably fitted onto one end of the Z-shaped strip 18. A spring connects the inner wall of the sleeve frame 19 to the Z-shaped strip 18. Slots 20 are provided at both ends of the lifting strip 13. One end of the sleeve frame 19 is movably inserted into the slot 20. When the transformer is working, the first motor 16 in the mounting sleeve 15 is started, driving two first threaded rods 17 to rotate. The threads on the two first threaded rods 17 are in opposite directions. Correspondingly, the lifting sleeve 14 moves synchronously in opposite directions on the two rotating first threaded rods 17, causing the first heat sink 5 and the second heat sink... The components 6 are separated from each other, and the setting of the air guide plate 7, with its inclined surface, can better guide the external airflow between the first heat sink 5 and the second heat sink 6, thereby better removing the heat from the first heat sink 5 and the second heat sink 6 and improving the heat dissipation effect of the transformer. When the first heat sink 5 or the second heat sink 6 is damaged and needs to be repaired or replaced, the corresponding sleeve frame 19 can be pulled out from the slot 20 on the lifting bar 13, and the heat sink 10 can be removed from the mounting slot on the side of the transformer body 1. The damaged first heat sink 5 and the second heat sink 6 can be replaced separately, reducing maintenance costs.

[0016] See Figures 1-4 The transfer structure includes a movable seat 21 set below the transformer body 1, a stop structure set on the movable seat 21, the movable seat 21 is in the shape of "U", two fixed plates 22 are connected to the upper front edge of the movable seat 21, a push rod 23 is set between the two fixed plates 22, a lifting structure is set between the movable seat 21 and the support plate 8, and rollers 39 are set at both ends of the side of the movable seat 21. The lifting structure includes grooves 26 on the left and right sides of the movable base 21. A bidirectional screw 25 is rotatably connected between the front and rear end walls of each groove 26. The two ends of the bidirectional screw 25 have opposite thread directions. A second motor 24 is installed on each of the two rear end faces of the movable base 21. One end of the output shaft of the second motor 24 is connected to the bidirectional screw 25. Two movable blocks 27 are slidably arranged in the grooves 26. The movable blocks 27 have threaded grooves for the bidirectional screw 25 to pass through. A U-shaped seat 28 is provided at one end of the movable block 27. A lifting plate 29 is rotatably installed in the U-shaped seat 28. One end of the lifting plate 29 is set on the support plate 8 through a plug-in structure. The plug-in structure includes a fixed seat 31 welded inside the support plate 8, an installation rod 30 movably inserted into the fixed seat 31, a threaded installation rod 30, one end of the installation rod 30 being screwed into a threaded groove on the inner wall of the fixed seat 31, a rotating block 32 being provided at the other end of the installation rod 30, and one end of the lifting plate 29 being movably sleeved on the installation rod 30. The stopping structure includes a second threaded rod 33 rotatably connected to the movable seat 21. A lifting ring 34 is rotatably fitted onto the second threaded rod 33 via a thread. A lifting frame 35 is fixedly installed on the lifting ring 34. The lifting frame 35 moves through a through slot 36 opened on the movable seat 21. A stop plate 38 is installed at the bottom end of the lifting frame 35. A rotating wheel 37 is set at the top end of the second threaded rod 33. When the transformer needs to be moved, the push rod 23 pushes the movable seat 21 to the transformer body 1, one end of the lifting plate 29 is rotated into the fixed seat 31, and then the mounting rod 30 is passed through the lifting plate 29. The rotating block 32 rotates one end of the mounting rod 30 into the threaded groove on the inner wall of the fixed seat 31. At this time, the second motor 24 can be started to drive the bidirectional screw 25 to rotate. Each set of two moving blocks 27 moves synchronously towards each other on the movable seat 21. The transformer body 1 is lifted from the ground by the lifting plate 29. With the rolling of the roller 39, the push rod 23 pushes the movable seat 21 to move. The transformer body 1 can be moved, and when the transformer body 1 is moved to the installation position, the second motor 24 can be started to drive the bidirectional screw 25 to rotate. The transformer body 1 is lifted to the installation position by the lifting plate 29 for installation. In this way, the transformer body 1 can be lifted for installation without the need for a lifting structure, reducing installation costs. During the installation process, the rotating wheel 37 rotates the second threaded rod 33, and the lifting ring 34 moves up and down on the rotating second threaded rod 33, thereby driving the stop plate 38 to move down and press against the ground. The static friction between the stop plate 38 and the ground is used to stop the moving seat 21, thereby avoiding the transformer body 1 from being moved during the installation process. After the transformer body 1 is installed, the mounting rod 30 is turned out of the threaded groove by the rotating block 32, and the mounting rod 30 is pulled out from the lifting plate 29. In this way, the transfer structure can be removed from the transformer body 1, so that the transfer structure can be reused.

[0017] The implementation principle of an oil-immersed transformer for water conservancy projects according to an embodiment of the present invention is as follows: When the transformer needs to be moved, the push rod 23 pushes the movable seat 21 to the transformer body 1, one end of the lifting plate 29 is rotated into the fixed seat 31, and the mounting rod 30 is passed through the lifting plate 29. The rotating block 32 then rotates one end of the mounting rod 30 into the threaded groove on the inner wall of the fixed seat 31. At this time, the second motor 24 can be started to drive the bidirectional screw 25 to rotate. Two moving blocks 27 in each group move synchronously towards each other on the movable seat 21. The transformer body 1 is lifted from the ground by the lifting plate 29, and with the rolling of the rollers 39, the transformer body 1 is moved... Push rod 23 moves movable seat 21, thus moving transformer body 1. When transformer body 1 is moved to the installation position, second motor 24 can be started to drive bidirectional screw 25 to rotate, lifting transformer body 1 to the installation position via lifting plate 29. This eliminates the need for a lifting structure, allowing for easy lifting of transformer body 1 and reducing installation costs. During installation, rotating wheel 37 rotates second threaded rod 33, causing lifting ring 34 to move up and down on the rotating second threaded rod 33, thereby moving stop plate 38 down to press against the ground. Static friction between stop plate 38 and the ground is utilized... The moving base 21 is stopped, thus preventing the transformer body 1 from shifting during installation. After installation, the transformer body 1 is rotated by the rotating block 32 to remove one end of the mounting rod 30 from the threaded groove and pull the mounting rod 30 out of the lifting plate 29. This allows the transfer structure to be removed from the transformer body 1 and reused. When the transformer is in operation, the first motor 16 in the mounting sleeve 15 is started, driving the two first threaded rods 17 to rotate. The threads on the two first threaded rods 17 are in opposite directions, and the corresponding lifting sleeve 14 moves synchronously in opposite directions on the two rotating first threaded rods 17. The movement separates the first heat sink 5 and the second heat sink 6 from each other. The arrangement of the air guide plate 7, with its inclined surface, can better guide the external airflow between the first heat sink 5 and the second heat sink 6, thereby better removing the heat from the first heat sink 5 and the second heat sink 6 and improving the heat dissipation effect of the transformer. When the first heat sink 5 or the second heat sink 6 is damaged and needs to be repaired or replaced, the corresponding sleeve 19 can be pulled out from the slot 20 on the lifting bar 13, and the heat sink 10 can be removed from the mounting slot on the side of the transformer body 1. The damaged first heat sink 5 and the second heat sink 6 can be replaced separately, reducing maintenance costs.

[0018] 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, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An oil immersed transformer for hydraulic works, comprising a transformer body (1), characterized in that: The transformer body (1) is provided with support plates (8) on the lower sides, the support plates (8) are arranged on the transfer structure, the right side of the upper surface of the transformer body (1) is provided with a bolt fastening mounting seat (2), an oil tank (3) is arranged on the mounting seat (2), an oil delivery pipe (4) is connected to the oil tank (3), the oil delivery pipe (4) is inserted into the transformer body (1), first heat sinks (5) are arranged on the four sides of the transformer body (1), second heat sinks (6) are arranged on the four sides of the transformer body (1), the first heat sinks (5) and the second heat sinks (6) of each group are arranged at intervals, and the first heat sinks (5) and the second heat sinks (6) are arranged on the transformer body (1) in a staggered structure; The staggered structure comprises mounting grooves arranged on the four sides of the transformer body (1), a heat sink (10) is arranged in each mounting groove, a plurality of vertical grooves (9) are arranged at equal intervals on each heat sink (10), the first heat sinks (5) and the second heat sinks (6) are respectively arranged in the corresponding vertical grooves (9), the rear sides of the first heat sinks (5) and the second heat sinks (6) of each group are respectively connected to two lifting bars (13), and a driving structure is arranged at the side corners of the transformer body (1). The first heat sinks (5) are provided with air guide plates (7) at the top ends of the two side surfaces, and the second heat sinks (6) are provided with air guide plates (7) at the bottom ends of the two side surfaces.

2. The oil immersed transformer for hydraulic engineering according to claim 1, characterized in that: The driving structure comprises four groups of fixing blocks (11) connected to the four corners of the transformer body (1), three groups of the fixing blocks (11) are connected to vertical rods (12), one group of the fixing blocks (11) is rotatably connected to a first threaded rod (17), lifting sleeves (14) are arranged on the first threaded rod (17) and the vertical rod (12) near the two ends, threads matched with the first threaded rod (17) are arranged on the inner walls of the corresponding two lifting sleeves (14), a connecting structure is arranged between the lifting sleeve (14) and the lifting bar (13), the two ends of the two first threaded rods (17) are respectively connected to the two output ends of a first motor (16), the first motor (16) is fixedly arranged in a mounting sleeve (15), and the mounting sleeve (15) is fixedly arranged on the transformer body (1).

3. The oil immersed transformer for hydraulic engineering according to claim 2, characterized in that: The connecting structure comprises a Z-shaped strip (18) fixedly connected to the lifting sleeve (14), the Z-shaped strip (18) is movably sleeved with a sleeve frame (19), springs are connected between the inner wall of the sleeve frame (19) and the Z-shaped strip (18), and the two ends of the lifting bar (13) are provided with insertion grooves (20), and one end of the sleeve frame (19) is movably inserted into the insertion groove (20).

4. The oil immersed transformer for hydraulic engineering according to claim 1, characterized in that: The transfer structure comprises a moving seat (21) arranged below the transformer body (1), a stop structure is arranged on the moving seat (21), the moving seat (21) is in the shape of "U", two fixed plates (22) are connected to the front of the upper surface of the moving seat (21), a push rod (23) is arranged between the two fixed plates (22), a jacking structure is arranged between the moving seat (21) and the supporting plate (8), and a roller (39) is arranged at the two ends of the side surface of the moving seat (21).

5. The oil immersed transformer for hydraulic engineering according to claim 4, characterized in that: The jacking structure comprises grooves (26) arranged on the left and right sides of the upper surface of the moving seat (21), a bidirectional screw rod (25) is rotatably connected between the groove walls of the front and rear ends of each groove (26), the thread directions of the front and rear sections of the bidirectional screw rod (25) are opposite, a second motor (24) is installed on the two rear end surfaces of the moving seat (21), one end of the output shaft of the second motor (24) is connected with the bidirectional screw rod (25), two moving blocks (27) are slidably arranged in the grooves (26), a threaded groove is formed in the moving block (27) and used for allowing the bidirectional screw rod (25) to pass through, a U-shaped seat (28) is arranged at one end of the moving block (27), a jacking plate (29) is rotatably installed in the U-shaped seat (28), and one end of the jacking plate (29) is arranged on the supporting plate (8) through a plug-in structure.

6. The oil immersed transformer for hydraulic engineering according to claim 5, characterized in that: The plug-in structure comprises a fixed seat (31) welded in the supporting plate (8), a mounting rod (30) is movably inserted into the fixed seat (31), threads are arranged on the mounting rod (30), one end of the mounting rod (30) is screwed into a threaded groove formed in the inner wall of the fixed seat (31), and the other end of the mounting rod (30) is provided with a rotating block (32), and one end of the jacking plate (29) is movably sleeved on the mounting rod (30).

7. The oil immersed transformer for hydraulic engineering according to claim 4, characterized in that: The stop structure comprises a second threaded rod (33) rotatably connected to the upper surface of the moving seat (21), a lifting ring (34) is rotatably sleeved on the second threaded rod (33) through threads, a lifting frame (35) is fixedly installed on the lifting ring (34), the lifting frame (35) movably penetrates through a penetrating groove (36) formed in the moving seat (21), a stop plate (38) is installed at the bottom end of the lifting frame (35), and a rotating wheel (37) is arranged at the top end of the second threaded rod (33).

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