Adjustable heat dissipation device for transformer

Abstract

The invention belongs to the technical field of transformer substations, in particular to an adjustable heat dissipation device for a transformer, and provides the following scheme that the adjustable heat dissipation device comprises a base, a transformer support, an oil pump, a heat dissipation device support and a fan support, the transformer support is fixedly connected to one side of the top of the base, and the fan support is fixedly connected to the other side of the top of the base; the transformer support is fixedly connected to the middle of the top of the base, the oil pump is fixedly connected to the top, close to one side of the transformer support, of the base, the transformer body is fixedly connected to the top of the transformer support, the radiator is fixedly connected to the top of the radiator support, and the oil discharge pipe is fixedly connected to one side of the bottom of the transformer body. One end of the oil discharging pipe is fixedly connected to the oil pumping end of the oil pump, and the oil discharging end of the oil pump is fixedly connected with an oil feeding pipe. According to the heat dissipation device, the heat dissipation cavity and the fins are installed in the heat dissipation device, the space utilization rate of the device is effectively increased, and the device can be suitable for more different scenes.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substations, and in particular to an adjustable heat dissipation device for transformers. Background Art

[0002] The main transformer in the substation is an important device for energy conversion and voltage level change. It is the core equipment in the substation. Its safe and stable operation is crucial to the reliable operation of the entire substation and power grid.

[0003] At present, the main transformer is generally an oil-immersed transformer. When it is running, the heat generated by the loss in the winding and the core must be dissipated in time to avoid overheating and insulation damage. Especially in the hot summer, the temperature is high and the load is high. The temperature of the main transformer rises. Excessive oil temperature will accelerate the aging of the insulation of the main transformer and endanger the safe operation of the main transformer. In particular, the 750MW three-phase common forced circulation main transformer in the ultra-high voltage substation requires good heat dissipation.

[0004] In order to increase the heat dissipation efficiency of existing oil-immersed main transformers, various cooling measures are adopted for the core and windings of large-capacity transformers. Common main transformers are mainly cooled by installing heat sinks and fan motors when leaving the factory. This method is not suitable for installation environments with limited space and is likely to hinder the stable operation of the transformer. Summary of the invention

[0005] Based on the technical problem that the existing transformer heat dissipation components cannot effectively utilize the space environment and are not conducive to the adjustment and maintenance of other components of the transformer, the present invention proposes an adjustable heat dissipation device for the transformer.

[0006] The present invention provides an adjustable heat dissipation device for a transformer, comprising a base, a transformer bracket, an oil pump, a radiator bracket and a fan bracket, wherein the transformer bracket is fixedly connected to one side of the top of the base, the fan bracket is fixedly connected to the other side of the top of the base, the transformer bracket is fixedly connected to the middle position of the top of the base, the oil pump is fixedly connected to the top of the base near the transformer bracket, the top of the transformer bracket is fixedly connected to the transformer body, the top of the radiator bracket is fixedly connected to the radiator, one side of the bottom of the transformer body is fixedly connected to a first oil delivery pipe, one end of the first oil delivery pipe is fixedly connected to the oil discharge end of the oil pump, the oil suction end of the oil pump is fixedly connected to a second oil delivery pipe, one end of the second oil delivery pipe away from the oil pump is fixedly connected to one side of the bottom of the radiator, the top of the transformer body away from the second oil delivery pipe and the top of the radiator away from the second oil delivery pipe are fixedly connected to the same return pipe, the inside of the fan bracket is fixedly connected to evenly distributed fans, the body of the radiator is fixedly connected to heat dissipation chambers staggered up and down, the two ends of the heat dissipation chamber extend to the outside of the two sides of the radiator respectively, and the inner wall of the heat dissipation chamber is fixedly connected to fins staggered left and right.

[0007] Preferably, the top of the radiator is plugged with evenly distributed sealing plugs, both sides of the bottom of the sealing plugs are fixedly connected with heat sinks, the upper and lower ends of the heat sink are provided with evenly distributed oil holes, and the heat sink is made of metal material with a sandblasted surface.

[0008] Preferably, the number of the sealing plugs is equal to the number of the heat dissipation cavities, and the two heat dissipation plates at the bottom of the sealing plugs are respectively attached to the outer walls on both sides of the adjacent heat dissipation cavities.

[0009] Preferably, the outer wall of the heat dissipation cavity is sealed at the oil holes at one end of two adjacent heat dissipation plates, and the two adjacent heat dissipation cavities are respectively sealed at the oil holes at different ends of the heat dissipation plates.

[0010] Preferably, the top of the sealing plug is fixedly connected to a cover plate, the top of the cover plate is fixedly connected to a handle, the top of the handle is fixedly connected to a positioning sleeve, and the internal thread of the positioning sleeve is connected to the same positioning screw.

[0011] Preferably, a support plate is fixedly connected to one side of the top outer wall of the radiator, and a support sleeve is fixedly connected to one side of the support plate, a positioning screw is inserted into the interior of the support sleeve, and a turntable is fixedly connected to one end of the positioning screw close to the support sleeve.

[0012] Preferably, a baffle is fixedly connected to a side of the top outer wall of the radiator away from the support plate, and one end of the positioning screw is in contact with the side surface of the support plate.

[0013] Preferably, a reflux control valve is provided in the middle of the reflux pipe, and an oil supply control valve is provided on a side of the second oil supply pipe close to the radiator.

[0014] Preferably, a sliding seat is fixedly connected to the bottom of the fan bracket, a sliding groove is opened on the side of the base close to the fan bracket, the sliding seat is slidably connected to the inside of the sliding groove, the inner wall of the sliding seat is rotatably connected to rollers evenly distributed, and the bottom plane of the base is tangent to the outer wall of the roller.

[0015] Preferably, a positioning frame is fixedly connected to the bottom of the outer wall of one side of the fan bracket, a positioning pin is inserted in the middle of the positioning frame, and evenly distributed pin holes are opened on the top of the base close to the positioning pin, and the bottom end of the positioning pin is inserted into the inside of one of the pin holes.

[0016] Compared with the prior art, the present invention provides an adjustable heat dissipation device for a transformer, which has the following beneficial effects:

[0017] 1. This adjustable heat dissipation device for a transformer, by arranging a fan, a heat dissipation cavity and fins, starting the fan, accelerating the heat exchange between the radiator and the atmosphere, cooling the transformer oil, when air flows through the inner wall of the heat dissipation cavity and the fins, the inner wall of the heat dissipation cavity and the fins effectively increase the heat dissipation area of ​​the device, further improving the heat dissipation efficiency, after the heat dissipation is completed, the transformer oil enters the interior of the transformer body through the oil pump, the first oil delivery pipe and the second oil delivery pipe, by installing the heat dissipation cavity and the fins inside the radiator, the space utilization rate of the device is effectively improved, so that the device can be applied to more different scenarios.

[0018] 2. This adjustable heat dissipation device for transformers is provided with a heat dissipation plate and oil holes. When transformer oil flows, it passes through the heat dissipation plate through the oil holes. Since the heat dissipation cavity blocks the oil holes in an interlaced manner, the flow path of the transformer oil inside the radiator is extended, ensuring that the transformer oil fully completes the heat exchange. The heat exchange area of ​​the high-temperature transformer oil inside the radiator is increased through the heat dissipation plate, thereby improving the heat dissipation efficiency.

[0019] 3. This adjustable heat dissipation device for transformers is arranged so that a positioning screw is threadedly connected to the inside of a positioning sleeve to fix the positioning sleeve, a handle and a sealing plug. When the transformer body is powered off for maintenance, the positioning screw is turned out of the positioning sleeve by a turntable, and the handle is pulled upward to pull the cover plate, the sealing plug and the heat dissipation plate out of the radiator. The sandblasted surface of the heat dissipation plate and the oil hole can be cleaned of impurities, which is beneficial to maintaining the heat dissipation capacity of the device and extending the service life of the device.

[0020] 4. This adjustable heat dissipation device for a transformer is provided with a positioning pin, a pin hole, a positioning frame, a sliding seat and a roller. The positioning pin is inserted into the positioning frame and the pin hole to achieve a fast connection between the fan bracket and the base. By changing the pin hole into which the positioning pin is inserted, the position of the fan bracket and the fan can be adjusted. When the fan bracket moves, the sliding seat slides along the slide groove, and the roller is supported at the bottom and rolls along the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0022] Figure 2 A schematic diagram of the structure of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0023] Figure 3 It is a right side structural schematic diagram of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0024] Figure 4 A schematic diagram of the top view of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0025] Figure 5 A schematic diagram of the structure of a heat sink of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of position B of an adjustable heat dissipation device for a transformer proposed by the present invention;

[0027] Figure 7 A schematic diagram of the internal structure of a radiator of an adjustable heat dissipation device for a transformer proposed by the present invention.

[0028] In the figure: 1. base; 2. transformer body; 3. transformer bracket; 4. radiator; 5. oil pump; 6. fan; 7. fan bracket; 8. slide groove; 9. sliding seat; 10. roller; 11. first oil delivery pipe; 12. second oil delivery pipe; 13. radiator bracket; 14. oil delivery control valve; 15. support plate; 16. support sleeve; 17. baffle; 18. positioning sleeve; 19. handle; 20. positioning screw; 21. cover plate; 22. turntable; 23. positioning pin; 24. pin hole; 25. positioning frame; 26. heat dissipation cavity; 27. return pipe; 28. return control valve; 29. ​​fin; 30. sealing plug; 31. oil hole; 32. heat dissipation plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-7, an adjustable heat dissipation device for a transformer, comprising a base 1, a transformer bracket 3, an oil pump 5, a radiator bracket 13 and a fan bracket 7, wherein the transformer bracket 3 is fixedly connected to one side of the top of the base 1, the fan bracket 7 is fixedly connected to the other side of the top of the base 1, the transformer bracket 3 is fixedly connected to the middle position of the top of the base 1, the oil pump 5 is fixedly connected to the top of the base 1 close to the transformer bracket 3, the top of the transformer bracket 3 is fixedly connected to the transformer body 2, the top of the radiator bracket 13 is fixedly connected to the radiator 4, one side of the bottom of the transformer body 2 is fixedly connected to a first oil delivery pipe 11, one end of the first oil delivery pipe 11 is fixedly connected to the oil discharge end of the oil pump 5, the oil pumping end of the oil pump 5 is fixedly connected to a second oil delivery pipe 12, and the end of the second oil delivery pipe 12 away from the oil pump 5 is fixedly connected to one side of the bottom of the radiator 4, A same return pipe 27 is fixedly connected between the top of the transformer body 2 on the side away from the second oil delivery pipe 12 and the top of the radiator 4 on the side away from the second oil delivery pipe 12. The fan bracket 7 is fixedly connected to the inside of which are evenly distributed fans 6. The body of the radiator 4 is fixedly connected to heat dissipation cavities 26 that are staggered up and down. The two ends of the heat dissipation cavity 26 extend to the outside of the two sides of the radiator 4 respectively. The inner walls of the heat dissipation cavity 26 are fixedly connected to fins 29 that are staggered left and right. The interior of the radiator 4 and the transformer body 2 are filled with transformer oil for heat dissipation. The oil pump 5 draws the low-temperature transformer oil inside the radiator 4 into the transformer body 2 through the first oil delivery pipe 11 and the second oil delivery pipe 12, and absorbs the heat of the high-temperature components on the upper part of the transformer body 2 through the transformer oil. After the heat absorption is completed, the transformer oil returns to the inside of the radiator 4 through the return pipe 27.

[0031] In the present invention, the top of the radiator 4 is plugged with evenly distributed sealing plugs 30, and both sides of the bottom of the sealing plug 30 are fixedly connected with heat sinks 32. The upper and lower ends of the heat sink 32 are provided with evenly distributed oil holes 31. The heat sink 32 is made of a metal material with a sandblasted surface. The heat exchange area of ​​the high-temperature transformer oil inside the radiator 4 is increased through the heat sink 32, thereby improving the heat dissipation efficiency.

[0032] In the present invention, the number of sealing plugs 30 is equal to the number of heat dissipation cavities 26 , and the two heat dissipation plates 32 at the bottom of the sealing plug 30 are respectively attached to the outer walls on both sides of the adjacent heat dissipation cavities 26 , and the opening at the top of the radiator 4 is sealed by the sealing plug 30 .

[0033] In the present invention, the outer wall of the heat dissipation cavity 26 is blocked at the oil holes 31 at one end of two adjacent heat dissipation plates 32, and the two adjacent heat dissipation cavities 26 are respectively blocked at the oil holes 31 at different ends of the heat dissipation plates 32. When the transformer oil flows, it passes through the heat dissipation plates 32 through the oil holes 31.

[0034] In the present invention, the top of the sealing plug 30 is fixedly connected to the cover plate 21, the top of the cover plate 21 is fixedly connected to the handle 19, the top of the handle 19 is fixedly connected to the positioning sleeve 18, the internal thread of the positioning sleeve 18 is connected to the same positioning screw 20, and the positioning screw 20 is threadedly connected to the inside of the positioning sleeve 18 to fix the positioning sleeve 18, the handle 19 and the sealing plug 30.

[0035] In the present invention, a support plate 15 is fixedly connected to one side of the top outer wall of the radiator 4, and a support sleeve 16 is fixedly connected to one side of the support plate 15. A positioning screw 20 is inserted into the interior of the support sleeve 16. An end of the positioning screw 20 close to the support sleeve 16 is fixedly connected to a turntable 22. The positioning screw 20 is rotated by the turntable 22, and the support sleeve 16 and the support plate 15 support the end of the positioning screw 20 close to the turntable 22.

[0036] In the present invention, a baffle 17 is fixedly connected to the side of the top outer wall of the radiator 4 away from the support plate 15, one end of the positioning screw 20 contacts the side of the support plate 15, and the baffle 17 limits the end of the positioning screw 20 away from the turntable 22.

[0037] In the present invention, a reflux control valve 28 is provided in the middle of the reflux pipe 27, and an oil supply control valve 14 is provided on the side of the second oil supply pipe 12 close to the radiator 4. The reflux control valve 28 controls the on-off of the reflux pipe 27, and the oil supply control valve 14 controls the on-off of the second oil supply pipe 12.

[0038] In the present invention, a sliding seat 9 is fixedly connected to the bottom of the fan bracket 7, a sliding groove 8 is opened on the side of the base 1 close to the fan bracket 7, the sliding seat 9 is slidably connected to the inside of the sliding groove 8, the inner wall of the sliding seat 9 is rotatably connected to rollers 10 that are evenly distributed, the bottom plane of the base 1 is tangent to the outer wall of the roller 10, and when the fan bracket 7 moves, the sliding seat 9 slides along the sliding groove 8, and the rollers 10 are supported at the bottom and roll along the ground.

[0039] In the present invention, a positioning frame 25 is fixedly connected to the bottom of the outer wall on one side of the fan bracket 7, a positioning pin 23 is inserted in the middle of the positioning frame 25, and evenly distributed pin holes 24 are opened on the top of the base 1 close to the positioning pin 23. The bottom end of the positioning pin 23 is inserted into the inside of one of the pin holes 24, and the positioning pin 23 is inserted into the positioning frame 25 and the pin hole 24 to achieve a fastened connection between the fan bracket 7 and the base 1.

[0040] When in use, the interior of the radiator 4 and the transformer body 2 is filled with transformer oil for heat dissipation, the oil supply control valve 14 is turned on, and the oil pump 5 draws the low-temperature transformer oil in the radiator 4 into the transformer body 2 through the first oil supply pipe 11 and the second oil supply pipe 12, the reflux control valve 28 is turned on, and the transformer oil that has completed the heat exchange returns to the radiator 4 through the reflux pipe 27, the fan 6 is started, the heat exchange between the radiator 4 and the atmosphere is accelerated, and the transformer oil is cooled, the positioning pin 23 is inserted into the positioning frame 25 and the pin hole 24, and the fan bracket 7 is fastened to the base 1. By changing the pin hole 24 into which the positioning pin 23 is inserted, the position adjustment of the fan bracket 7 and the fan 6 can be achieved. When the fan bracket 7 moves, the sliding seat 9 slides along the slide groove 8, and the roller 10 is supported at the bottom and rolls along the ground, and the transformer oil During circulation, the oil passes through the heat sink 32 via the oil holes 31. Since the heat sink 26 staggers and blocks the oil holes 31, the flow path of the transformer oil inside the radiator 4 is extended. The heat exchange area of ​​the high-temperature transformer oil inside the radiator 4 is increased through the heat sink 32, ensuring that the transformer oil fully completes the heat exchange. When the air flows through the inner wall of the heat sink 26 and the fins 29, the inner wall of the heat sink 26 and the fins 29 effectively increase the heat dissipation area of ​​the device, further improving the heat dissipation efficiency. When the transformer body 2 is powered off for maintenance, the positioning screw 20 is turned out of the positioning sleeve 18 through the turntable 22, and the handle 19 is pulled upward to pull the cover plate 21, the sealing plug 30 and the heat sink 32 out of the radiator 4. The sandblasted surface of the heat sink 32 and the channel of the oil holes 31 can be cleaned of impurities, which is beneficial to maintaining the heat dissipation capacity of the device.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable heat dissipation device for a transformer, comprising a base (1), a transformer bracket (3), an oil pump (5), a radiator bracket (13) and a fan bracket (7), wherein the transformer bracket (3) is fixedly connected to one side of the top of the base (1), the fan bracket (7) is fixedly connected to the other side of the top of the base (1), the transformer bracket (3) is fixedly connected to the middle position of the top of the base (1), and the oil pump (5) is fixedly connected to the top of the base (1) near the transformer bracket (3), characterized in that: The top of the transformer support (3) is fixedly connected to the transformer body (2), the top of the radiator support (13) is fixedly connected to the radiator (4), one side of the bottom of the transformer body (2) is fixedly connected to a first oil delivery pipe (11), one end of the first oil delivery pipe (11) is fixedly connected to the oil discharge end of the oil pump (5), the oil suction end of the oil pump (5) is fixedly connected to a second oil delivery pipe (12), one end of the second oil delivery pipe (12) away from the oil pump (5) is fixedly connected to one side of the bottom of the radiator (4), and the transformer body (2) A return pipe (27) is fixedly connected between the top of the side away from the second oil delivery pipe (12) and the top of the side of the radiator (4) away from the second oil delivery pipe (12), the inside of the fan bracket (7) is fixedly connected with evenly distributed fans (6), the body of the radiator (4) is fixedly connected with heat dissipation cavities (26) distributed alternately up and down, the two ends of the heat dissipation cavity (26) respectively extend to the outside of the two sides of the radiator (4), and the inner wall of the heat dissipation cavity (26) is fixedly connected with fins (29) distributed alternately left and right.

2. The adjustable heat dissipation device for a transformer according to claim 1, characterized in that: The top of the radiator (4) is plugged with evenly distributed sealing plugs (30), both sides of the bottom of the sealing plug (30) are fixedly connected with heat dissipation plates (32), the upper and lower ends of the heat dissipation plates (32) are provided with evenly distributed oil holes (31), and the heat dissipation plates (32) are made of metal material with a sandblasted surface.

3. The adjustable heat dissipation device for transformer according to claim 2, characterized in that: The number of the sealing plugs (30) is equal to the number of the heat dissipation cavities (26), and the two heat dissipation plates (32) at the bottom of the sealing plug (30) are respectively attached to the outer walls on both sides of the adjacent heat dissipation cavities (26).

4. The adjustable heat dissipation device for transformer according to claim 3, characterized in that: The outer wall of the heat dissipation cavity (26) is sealed at the oil passage hole (31) at one end of two adjacent heat dissipation plates (32), and the two adjacent heat dissipation cavities (26) are respectively sealed at the oil passage holes (31) at different ends of the heat dissipation plates (32).

5. The adjustable heat dissipation device for transformer according to claim 2, characterized in that: The top of the sealing plug (30) is fixedly connected to a cover plate (21), the top of the cover plate (21) is fixedly connected to a handle (19), the top of the handle (19) is fixedly connected to a positioning sleeve (18), and the internal thread of the positioning sleeve (18) is connected to the same positioning screw (20).

6. The adjustable heat dissipation device for transformer according to claim 5, characterized in that: A support plate (15) is fixedly connected to one side of the top outer wall of the radiator (4), and a support sleeve (16) is fixedly connected to one side of the support plate (15); a positioning screw (20) is inserted into the interior of the support sleeve (16), and a turntable (22) is fixedly connected to one end of the positioning screw (20) close to the support sleeve (16).

7. The adjustable heat dissipation device for transformer according to claim 6, characterized in that: A baffle (17) is fixedly connected to a side of the top outer wall of the radiator (4) away from the support plate (15), and one end of the positioning screw (20) is in contact with the side surface of the support plate (15).

8. The adjustable heat dissipation device for transformer according to claim 1, characterized in that: A reflux control valve (28) is provided in the middle of the reflux pipe (27), and an oil supply control valve (14) is provided on a side of the second oil supply pipe (12) close to the radiator (4).

9. The adjustable heat dissipation device for a transformer according to claim 1, characterized in that: The bottom of the fan bracket (7) is fixedly connected to a sliding seat (9); a sliding groove (8) is provided on a side of the base (1) close to the fan bracket (7); the sliding seat (9) is slidably connected to the inside of the sliding groove (8); the inner wall of the sliding seat (9) is rotatably connected to rollers (10) that are evenly distributed; and the bottom plane of the base (1) is tangent to the outer wall of the rollers (10).

10. The adjustable heat dissipation device for transformer according to claim 9, characterized in that: A positioning frame (25) is fixedly connected to the bottom of the outer wall of one side of the fan bracket (7), a positioning pin (23) is inserted in the middle of the positioning frame (25), and evenly distributed pin holes (24) are opened on the top of the base (1) near the positioning pin (23), and the bottom end of the positioning pin (23) is inserted into the interior of one of the pin holes (24).

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