Self-cooling oil-immersed power transformer

Abstract

The utility model relates to the technical field of oil-immersed power transformers, in particular to a self-cooling oil-immersed power transformer which comprises a power transformer body, cooling fins are fixedly connected to the periphery of the power transformer body, a top seat is connected to the upper end face of the power transformer body in an array mode, and a protection frame is connected to the upper end face of the top seat in a clamped mode. According to the oil-immersed power transformer, the heat dissipation fan can play a role in auxiliary heat dissipation so as to accelerate air flow and enable heat to be dissipated quickly, and then the atomization spray head can cool the cooling fins, so that the heat dissipation effect of the oil-immersed power transformer is improved, and the service life of the oil-immersed power transformer is prolonged. According to the oil-immersed power transformer, two connecting rotating plates are rotationally adjusted through relative movement of two threaded plates, so that two movable blocks at two fixing frames can slowly rotate downwards to drive universal wheels to be attached to the ground, then the universal wheels can be used for moving the whole oil-immersed power transformer, and the using flexibility of the oil-immersed power transformer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed power transformers, in particular to a self-heating oil-immersed power transformer. Background Art

[0002] Oil-immersed transformer is one of the common and important equipment in the power system. It is widely used in power transmission and distribution networks, playing the role of transmitting, distributing and controlling electric energy. Its main function is to transmit electricity to the load end of different voltage levels and adjust the voltage by adjusting the transformer ratio.

[0003] The prior art discloses patent application number "CN202122962174.4", a cooling structure for an oil-immersed power transformer, including a support plate, a liquid storage tank is fixedly suspended at the bottom end of the support plate by four connecting rods, a plurality of longitudinal liquid injection pipes are fixedly installed on the support plate, a bent pipe is fixedly installed on each longitudinal liquid injection pipe, and transverse liquid injection pipes are fixedly installed on two outer walls away from each other of the liquid storage tank, and two water pumps are fixedly installed in the liquid storage tank, and the water outlet end of each water pump is connected to a matching transverse liquid injection pipe.

[0004] The oil-immersed power transformer can only cool the heat sink, but in actual use, most oil-immersed power transformers only rely on internal oil and heat sinks to dissipate heat. This heat dissipation method is difficult to cool quickly, which makes it easy to overheat and be damaged, thereby affecting the heat dissipation effect of the oil-immersed power transformer, reducing the service life of the oil-immersed power transformer, and being unfavorable to the use of the oil-immersed power transformer. Utility Model Content

[0005] The utility model aims to provide a self-heating oil-immersed power transformer to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A self-heating oil-immersed power transformer comprises a power transformer body, heat sinks are fixedly connected around the power transformer body, a top seat is connected to the upper end surface of the power transformer body, a protective frame is clamped on the upper end surface of the top seat, two connecting plates are fixedly connected to the lower end surface of the protective frame, guide rails are connected to the lower end surfaces of the two connecting plates, sliders are installed on the lower end surfaces of the two guide rails, and cooling fans are fixedly installed on the lower end surfaces of the two sliders;

[0008] A support plate is fixedly connected to one side of the protective frame, the front end face of the support plate is connected to a spray device, the front end face of the spray device is installed with an array of atomizing nozzles, a water pump and a water tank are installed on the other side of the protective frame, a vertical box is installed on the upper end face of the water tank, and a filter plate is fixedly connected to the upper end face of the vertical box.

[0009] Preferably, the water tank and the inner side surface of the water pump are connected to a first pipe, the front end surface of the water pump and the left end surface of the spraying device are connected to a second pipe, two baffles are fixedly installed on the upper end surface of the protective frame, and both ends of the protective frame are slidably connected with extension slides, the upper side of the vertical box passes through the protective frame and extends to the upper end surface of the protective frame, and the water tank is located on the rear side of the water pump.

[0010] Preferably, one side of the two extended slides is connected to a guide side plate, one side of the top seat is clamped with a fastening bolt, one side of the fastening bolt passes through the protective frame and extends to the other side of the top seat, and the outer surface of the fastening bolt is threadedly connected to a first nut.

[0011] Preferably, four base plates are respectively installed on the lower end surface of the power transformer body, the lower end surfaces of the four base plates are threadedly connected with threaded base feet, the outer surfaces of the four threaded base feet are threadedly connected with second nuts, the lower end surface of the power transformer body is fixedly connected with two cross plates, the inner side surfaces of the two cross plates are rotatably connected with bidirectional threaded bevel gear rotating rods, the lower end surface of the power transformer body is fixedly installed with two fixing frames, the interiors of the two fixing frames are rotatably connected with movable blocks, and the lower end surfaces of the two movable blocks are installed with two universal wheels.

[0012] Preferably, the outer surface of the bidirectional threaded bevel gear rotating rod is provided with two external threads in opposite directions, the outer surface of the bidirectional threaded bevel gear rotating rod is threadedly connected to two threaded plates, the two cross plates are internally connected with limit rods, the outer surfaces of the two limit rods are slidingly connected to the two ends of the threaded plates, the inner sides of the two movable blocks are fixedly connected with U-shaped seats, and the two U-shaped seats and the inner sides of the threaded plates are both rotatably installed with connecting rotating plates.

[0013] Preferably, a reinforcement plate is installed on one side of the two fixing frames, the upper end faces of the two reinforcement plates are connected to the lower end face of the power transformer body, the lower end face of the power transformer body is installed with a fixing plate, the front end face of the fixing plate is rotatably connected to a bevel gear shaft, the rear side of the bevel gear shaft penetrates the fixing plate and extends to the rear end face of the fixing plate, a servo motor is fixedly installed on the rear end face of the bevel gear shaft, the bevel gear shaft and the bidirectional threaded bevel gear rod are meshed with each other, and the meshing method is bevel gear meshing.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model can transfer heat to the outside world by using heat sink and oil, so that the oil-immersed power transformer can achieve self-heating. Then the heat dissipation fan can play an auxiliary role in heat dissipation, so as to speed up the flow of air and quickly dissipate the heat. Then the atomizing nozzle can also cool the heat sink, thereby improving the heat dissipation effect of the oil-immersed power transformer and avoiding the overheating phenomenon and damage. At the same time, in rainy weather, rainwater can be filtered by the filter plate and enter the water tank along the vertical box, thereby improving the utilization rate of rainwater and facilitating the heat dissipation work.

[0016] 2. The utility model allows the two connecting rotating plates to rotate and adjust through the relative movement of the two threaded plates, so that the two movable blocks at the two fixed frames can slowly rotate downward to drive the universal wheels to fit the ground. Then the universal wheels can be used to move the entire oil-immersed power transformer, thereby improving the flexibility of the oil-immersed power transformer when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the power transformer body and heat sink;

[0020] Figure 3 This utility model Figure 1 Installation diagram of the spraying device, atomizing nozzle and water pump;

[0021] Figure 4 This utility model Figure 1 Installation diagram of the middle guide rail, slider and cooling fan;

[0022] Figure 5 This utility model Figure 1 Schematic diagram of the structure of the filter plate and baffle;

[0023] Figure 6 This utility model Figure 1 Schematic diagram of the structure of the middle threaded plate, U-shaped seat and connecting spiral plate;

[0024] The reference numerals in the figures are as follows:

[0025] 1. Power transformer body; 2. Heat sink; 3. Top seat; 4. Protective frame; 5. Connecting plate; 6. Guide rail; 7. Slider; 8. Cooling fan; 9. Support plate; 10. Spraying device; 11. Atomizing nozzle; 12. Water pump; 13. Water tank; 14. First pipeline; 15. Vertical box; 16. Filter plate; 17. Baffle; 18. Extended slide plate; 19. Guide side plate; 20. Fastening bolt; 21. First nut; 22. Bottom plate; 23. Threaded foot; 24. Second nut; 25. Cross plate; 26. Bidirectional threaded bevel gear rotating rod; 27. Second pipeline; 28. Threaded plate; 29. ​​Limit rod; 30. Fixed frame; 31. Movable block; 32. Universal wheel; 33. U-shaped seat; 34. Connecting rotary plate; 35. Reinforcement plate; 36. Fixed plate; 37. Bevel gear rotating shaft; 38. Servo motor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 6 As shown, a self-heating oil-immersed power transformer comprises a power transformer body 1, heat sinks 2 are fixedly connected around the power transformer body 1, a top seat 3 is connected to the upper end surface of the power transformer body 1, a protective frame 4 is clamped on the upper end surface of the top seat 3, two connecting plates 5 are fixedly connected to the lower end surface of the protective frame 4, guide rails 6 are connected to the lower end surfaces of the two connecting plates 5, sliders 7 are installed on the lower end surfaces of the two guide rails 6, and cooling fans 8 are fixedly installed on the lower end surfaces of the two sliders 7;

[0028] A support plate 9 is fixedly connected to one side of the protective frame 4, and a spray device 10 is connected to the front end surface of the support plate 9. An array of atomizing nozzles 11 are installed on the front end surface of the spray device 10. A water pump 12 and a water tank 13 are installed on the other side of the protective frame 4. A vertical box 15 is installed on the upper end surface of the water tank 13, and a filter plate 16 is fixedly connected to the upper end surface of the vertical box 15.

[0029] The water tank 13 is connected to the inner side of the water pump 12 together with the first pipe 14, the front end face of the water pump 12 and the left end face of the spraying device 10 are connected to the second pipe 27, and two baffles 17 are fixedly installed on the upper end face of the protective frame 4. Through the setting of the baffles 17, the two baffles 17 can be used to concentrate rainwater into the filter plate 16 to collect rainwater and facilitate the use of cold water for cooling. Both ends of the protective frame 4 are slidably connected with extension slides 18. The upper side of the vertical box 15 penetrates the protective frame 4 and extends to the upper end face of the protective frame 4. The water tank 13 is located at the rear side of the water pump 12.

[0030] One side of the two extended slides 18 is connected to a guide side plate 19. By installing and using the extended slides 18 and the guide side plates 19, the extended slides 18 can increase the protection range of the protective frame 4, thereby protecting the oil-immersed power transformer. At the same time, the guide side plates 19 can also limit the flow direction of rainwater to prevent excessive rainwater from contacting the oil-immersed power transformer. A fastening bolt 20 is clamped on one side of the top seat 3. One side of the fastening bolt 20 passes through the protective frame 4 and extends to the other side of the top seat 3. The outer surface of the fastening bolt 20 is threadedly connected to a first nut 21.

[0031] Four base plates 22 are respectively installed on the lower end surface of the power transformer body 1, and the lower end surfaces of the four base plates 22 are all threadedly connected with threaded feet 23, and the outer surfaces of the four threaded feet 23 are all threadedly connected with second nuts 24, which are installed and used through the threaded feet 23 and the second nuts 24. The height of the oil-immersed power transformer can be adjusted by using the four threaded feet 23, and then the second nut 24 can be rotated to locate the position of the oil-immersed power transformer. The lower end surface of the power transformer body 1 is fixedly connected with two cross plates 25, and the inner sides of the two cross plates 25 are rotatably connected with bidirectional threaded bevel gear rotating rods 26. The lower end surface of the power transformer body 1 is fixedly installed with two fixed frames 30, and the interiors of the two fixed frames 30 are rotatably connected with movable blocks 31, and the lower end surfaces of the two movable blocks 31 are both installed with two universal wheels 32.

[0032] The outer surface of the bidirectional threaded bevel gear rotating rod 26 is provided with two external threads in opposite directions. The outer surface of the bidirectional threaded bevel gear rotating rod 26 is threadedly connected to two threaded plates 28. The inner surfaces of the two cross plates 25 are connected to limit rods 29. Through the setting of the limit rods 29, the movement trajectories of the two threaded plates 28 can be limited, so that the two threaded plates 28 can move back and forth smoothly, which is convenient for rotating and adjusting the universal wheel 32 to move the entire oil-immersed power transformer. The outer surfaces of the two limit rods 29 are slidably connected to the two ends of the threaded plates 28. The inner sides of the two movable blocks 31 are fixedly connected to U-shaped seats 33. The two U-shaped seats 33 and the inner sides of the threaded plates 28 are rotated together and installed with connecting rotary plates 34.

[0033] A reinforcement plate 35 is installed on one side of the two fixing frames 30, and the upper end surfaces of the two reinforcement plates 35 are connected to the lower end surface of the power transformer body 1. A fixing plate 36 is installed on the lower end surface of the power transformer body 1. The front end surface of the fixing plate 36 is rotatably connected to a bevel gear shaft 37. The rear side of the bevel gear shaft 37 penetrates the fixing plate 36 and extends to the rear end surface of the fixing plate 36. A servo motor 38 is fixedly installed on the rear end surface of the bevel gear shaft 37. The bevel gear shaft 37 and the bidirectional threaded bevel gear rotating rod 26 are engaged with each other, and the engagement method is bevel gear engagement.

[0034] The working principle of a self-heating oil-immersed power transformer provided by the utility model is as follows:

[0035] By using the heat sink 2 and the oil, the heat can be transferred to the outside world, so that the self-heating of the oil-immersed power transformer can be achieved. Then, the protective frame 4 is inserted above the top seat 3, and the fastening bolts 20 and the first nut 21 are used to fix the protective frame 4 and the top seat 3, so that the protective frame 4 can be installed above the oil-immersed power transformer to improve the protection performance of the oil-immersed power transformer. Then the slider 7 can drive the cooling fan 8 to move back and forth on the guide rail 6, so that the cooling fan 8 can play a role in auxiliary heat dissipation, so as to speed up the flow of air and let the heat dissipate quickly. Then, the water pump 12 can be used to transport the cold water in the water tank 13 to the spraying device 10, and then sprayed out by the atomizing nozzle 11, so that the cold water can cool the heat sink 2, thereby improving the heat dissipation effect of the oil-immersed power transformer and preventing it from being easily damaged by overheating. At the same time, in rainy weather, rainwater can be filtered by the filter plate 16 and enter the water tank 13 along the vertical box 15, thereby improving the utilization rate of rainwater and facilitating the heat dissipation work.

[0036] By starting the servo motor 38, the output shaft of the servo motor 38 will drive the bevel gear shaft 37 to rotate. At this time, the bevel gear shaft 37 can drive the two-way threaded bevel gear rotating rod 26 to rotate together, so that the two threaded plates 28 on the two two-way threaded bevel gear rotating rods 26 can move relatively, so that the connecting rotating plates 34 at the two threaded plates 28 can be rotated and adjusted, so that the two movable blocks 31 at the two fixing frames 30 can slowly rotate downward, and then the two universal wheels 32 at the two movable blocks 31 can be attached to the ground, and then the universal wheels 32 can be used to move the entire oil-immersed power transformer, thereby improving the flexibility of the oil-immersed power transformer when in use.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A self-heating oil-immersed power transformer, comprising a power transformer body (1), characterized in that: The power transformer body (1) is fixedly connected with heat sinks (2) around its periphery; the upper end surface of the power transformer body (1) is connected with a top seat (3) in an array; the upper end surface of the top seat (3) is clamped with a protective frame (4); the lower end surface of the protective frame (4) is fixedly connected with two connecting plates (5); the lower end surfaces of the two connecting plates (5) are connected with guide rails (6); the lower end surfaces of the two guide rails (6) are installed with sliders (7); and the lower end surfaces of the two sliders (7) are fixedly installed with heat dissipation fans (8); A support plate (9) is fixedly connected to one side of the protection frame (4), a spray device (10) is connected to the front end surface of the support plate (9), an array of atomizing nozzles (11) are installed on the front end surface of the spray device (10), a water pump (12) and a water tank (13) are installed on the other side of the protection frame (4), a vertical box (15) is installed on the upper end surface of the water tank (13), and a filter plate (16) is fixedly connected to the upper end surface of the vertical box (15).

2. A self-cooling oil-immersed power transformer according to claim 1, characterized in that: The water tank (13) and the inner side surface of the water pump (12) are connected to a first pipe (14); the front end surface of the water pump (12) and the left end surface of the spraying device (10) are connected to a second pipe (27); two baffles (17) are fixedly mounted on the upper end surface of the protection frame (4); both ends of the protection frame (4) are slidably connected with extension slides (18); the upper side of the vertical box (15) penetrates the protection frame (4) and extends to the upper end surface of the protection frame (4); and the water tank (13) is located at the rear side of the water pump (12).

3. A self-cooling oil-immersed power transformer according to claim 2, characterized in that: One side of the two extending slide plates (18) is connected to a guide side plate (19), one side of the top seat (3) is clamped with a fastening bolt (20), one side of the fastening bolt (20) passes through the protective frame (4) and extends to the other side of the top seat (3), and the outer surface of the fastening bolt (20) is threadedly connected to a first nut (21).

4. A self-cooling oil-immersed power transformer according to claim 1, characterized in that: Four bottom plates (22) are respectively installed on the lower end surface of the power transformer body (1), and the lower end surfaces of the four bottom plates (22) are all threadedly connected to threaded feet (23), and the outer surfaces of the four threaded feet (23) are all threadedly connected to second nuts (24). The lower end surface of the power transformer body (1) is fixedly connected to two transverse plates (25), and the inner side surfaces of the two transverse plates (25) are rotatably connected to bidirectional threaded bevel gear rotating rods (26). The lower end surface of the power transformer body (1) is fixedly installed with two fixed frames (30), and the interiors of the two fixed frames (30) are rotatably connected to movable blocks (31), and the lower end surfaces of the two movable blocks (31) are each equipped with two universal wheels (32).

5. A self-cooling oil-immersed power transformer according to claim 4, characterized in that: The outer surface of the bidirectional threaded bevel gear rotating rod (26) is provided with two external threads in opposite directions, and the outer surface of the bidirectional threaded bevel gear rotating rod (26) is threadedly connected to two threaded plates (28). The two transverse plates (25) are internally connected with limit rods (29), and the outer surfaces of the two limit rods (29) are slidably connected to the two ends of the threaded plates (28). The inner side surfaces of the two movable blocks (31) are fixedly connected with U-shaped seats (33), and the two U-shaped seats (33) and the inner side surfaces of the threaded plates (28) are both rotatably mounted with connecting rotating plates (34).

6. A self-heating oil-immersed power transformer according to claim 4, characterized in that: A reinforcing plate (35) is installed on one side of the two fixing frames (30), and the upper end surfaces of the two reinforcing plates (35) are connected to the lower end surface of the power transformer body (1). A fixing plate (36) is installed on the lower end surface of the power transformer body (1). The front end surface of the fixing plate (36) is rotatably connected to a bevel gear shaft (37). The rear side of the bevel gear shaft (37) passes through the fixing plate (36) and extends to the rear end surface of the fixing plate (36). A servo motor (38) is fixedly installed on the rear end surface of the bevel gear shaft (37). The bevel gear shaft (37) and the bidirectional threaded bevel gear rotating rod (26) are meshed with each other, and the meshing method is bevel gear meshing.

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