An adjustable heat dissipation device for a transformer

Abstract

The present invention belongs to the technical field of substations, and in particular, to an adjustable heat dissipation device for a transformer. The following solution is proposed. It includes a base, a transformer support, an oil pump, a radiator support, and a fan support. The transformer support is fixedly connected to one side of the top of the base, 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 position of the top of the base, the oil pump is fixedly connected to the top of the base near the transformer support side. A transformer body is fixedly connected to the top of the transformer support, a radiator is fixedly connected to the top of the radiator support, one side of the bottom of the transformer body is fixedly connected with an oil drain pipe, one end of the oil drain pipe is fixedly connected to the oil suction end of the oil pump, and the oil discharge end of the oil pump is fixedly connected with an oil delivery pipe. In the present invention, by installing the heat dissipation cavity and fins inside the radiator, the space utilization rate of the device is effectively improved, enabling the device to be applicable to more different scenarios.

Description

Technical Field

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

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

[0003] At present, the main transformer is generally an oil-immersed transformer. During its operation, the heat generated by the losses in the windings and iron cores must be dissipated in time to prevent overheating and causing insulation overheat damage. Especially in the hot summer with high temperature and high load, the temperature of the main transformer rises. Excessive oil temperature will accelerate the insulation aging of the main transformer and endanger the safe operation of the main transformer. In particular, the 750MW three-phase common-body forced oil circulation main transformer in an extra-high voltage substation requires better heat dissipation.

[0004] In order to improve the heat dissipation efficiency of the existing oil-immersed main transformer, various cooling measures are taken for the iron cores and windings of large-capacity transformers. When the common main transformer leaves the factory, it mainly dissipates heat by installing heat sinks and fan motors. This method is not suitable for the installation environment with limited space and is likely to hinder the stable operation of the transformer. Summary of the Invention

[0005] Based on the technical problems 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 a transformer.

[0006] An adjustable heat dissipation device for a transformer proposed by the present invention includes a base, a transformer support, an oil pump, a radiator support, and a fan support. The transformer support is fixedly connected to one side of the top of the base, 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 position of the top of the base, the oil pump is fixedly connected to the top of the base near the transformer support, a transformer body is fixedly connected to the top of the transformer support, a radiator is fixedly connected to the top of the radiator support, 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, the 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 same return pipe is fixedly connected between the top of the transformer body on the side away from the second oil delivery pipe and the top of the radiator on the side away from the second oil delivery pipe, evenly distributed fans are fixedly connected inside the fan support, the body of the radiator is fixedly connected with vertically staggered heat dissipation cavities, both ends of the heat dissipation cavities extend to the outside of both sides of the radiator, and horizontally staggered fins are fixedly connected to the inner walls of the heat dissipation cavities.

[0007] Preferably, sealing plugs are evenly inserted into the top of the radiator. On both sides of the bottom of each sealing plug, heat dissipation plates are fixedly connected. Uniformly distributed oil passing holes are formed at both the upper and lower ends of the heat dissipation plates. The heat dissipation plates are made of metal materials with sandblasted surfaces.

[0008] Preferably, the number of the sealing plugs is equal to the number of the heat dissipation cavities. The two heat dissipation plates at the bottom of the sealing plug 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 blocks the oil passing holes at one end of the adjacent two heat dissipation plates, and the adjacent two heat dissipation cavities respectively block the oil passing holes at different ends of the heat dissipation plates.

[0010] Preferably, covers are fixedly connected to the tops of the sealing plugs. Handles are fixedly connected to the tops of the covers. Positioning sleeves are fixedly connected to the tops of the handles. The same positioning screw is threadedly connected inside the positioning sleeves.

[0011] Preferably, a support plate is fixedly connected to one side of the outer wall at the top of the radiator, and a support sleeve is fixedly connected to one side of the support plate. The positioning screw is inserted into the support sleeve. 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 the side of the outer wall at the top of the radiator away from the support plate. One end of the positioning screw contacts the side surface of the support plate.

[0013] Preferably, a reflux control valve is arranged in the middle of the reflux pipe, and an oil supply control valve is arranged on the 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 chute is formed on one side of the base close to the fan bracket. The sliding seat is slidably connected inside the chute. Uniformly distributed rollers are rotatably connected to the inner wall of the sliding seat. The bottom plane of the base is tangent to the outer wall of the rollers.

[0015] Preferably, a positioning frame is fixedly connected to the bottom of one side of the outer wall of the fan bracket. A positioning pin is inserted into the middle of the positioning frame. Uniformly distributed pin holes are formed at the top of the base on the side close to the positioning pin. The bottom end of the positioning pin is inserted into one of the pin holes.

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

[0017] 1. An adjustable heat dissipation device for a transformer, by setting a fan, a heat dissipation cavity and fins, starting the fan to accelerate 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 heat dissipation, the transformer oil enters the interior of the transformer body through an oil pump, a first oil delivery pipe and a 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, enabling the device to be applicable to more different scenarios.

[0018] 2. An adjustable heat dissipation device for a transformer, by setting a heat dissipation plate and oil passing holes. When the transformer oil flows, it passes through the heat dissipation plate via the oil passing holes. Since the heat dissipation cavity alternately blocks the oil passing holes, the flow path of the transformer oil inside the radiator is extended, ensuring that the transformer oil fully completes heat exchange. The heat dissipation plate increases the heat exchange area of the high-temperature transformer oil inside the radiator, improving the heat dissipation efficiency.

[0019] 3. An adjustable heat dissipation device for a transformer, by setting that the positioning screw is threadedly connected to the inside of the positioning sleeve to fix the positioning sleeve, the handle and the sealing plug. When performing power-off maintenance on the transformer body, the positioning screw is turned out of the positioning sleeve through the turntable, and the handle is pulled upward to pull out the cover plate, the sealing plug and the heat dissipation plate from the radiator, so that the sandblasted surface of the heat dissipation plate and the channels of the oil passing holes 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. An adjustable heat dissipation device for a transformer, by setting a positioning pin, a pin hole, a positioning bracket, a sliding seat and a roller. The positioning pin is inserted into the positioning bracket and the pin hole to realize the firm connection between the fan bracket and the base. By changing the pin hole into which the positioning pin is inserted, the position adjustment of the fan bracket and the fan can be realized. When the fan bracket moves, the sliding seat slides along the chute, and the roller supports at the bottom and rolls along the ground. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

[0027] Figure 7 Schematic diagram of the internal structure of the 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 support; 4, radiator; 5, oil pump; 6, fan; 7, fan support; 8, chute; 9, sliding seat; 10, roller; 11, first oil delivery pipe; 12, second oil delivery pipe; 13, radiator support; 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 passing hole; 32, heat dissipation plate. Specific embodiments

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

[0030] Refer to Figure 1-7, An adjustable heat dissipation device for a transformer, comprising a base 1, a transformer support 3, an oil pump 5, a radiator support 13 and a fan support 7. The transformer support 3 is fixedly connected to one side of the top of the base 1, the fan support 7 is fixedly connected to the other side of the top of the base 1, and the transformer support 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 near the transformer support 3. A transformer body 2 is fixedly connected to the top of the transformer support 3. A radiator 4 is fixedly connected to the top of the radiator support 13. 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, and the end of the second oil delivery pipe 12 far 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 far from the second oil delivery pipe 12 and the top of the radiator 4 on the side far from the second oil delivery pipe 12. Uniformly distributed fans 6 are fixedly connected inside the fan support 7. The body of the radiator 4 is fixedly connected with heat dissipation cavities 26 distributed in a staggered manner up and down. Both ends of the heat dissipation cavity 26 extend to the outside of both sides of the radiator 4. The inner walls of the heat dissipation cavity 26 are fixedly connected with fins 29 distributed in a staggered manner left and right. The inside of the radiator 4 and the transformer body 2 is filled with transformer oil for heat dissipation. The oil pump 5 pumps 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. The transformer oil absorbs the heat of the high-temperature components in the upper part of the transformer body 2, and the transformer oil after heat absorption returns to the inside of the radiator 4 through the return pipe 27.

[0031] In the present invention, uniformly distributed sealing plugs 30 are inserted into the top of the radiator 4. Both sides of the bottom of the sealing plug 30 are fixedly connected with heat dissipation plates 32. Uniformly distributed oil passing holes 31 are opened at both the upper and lower ends of the heat dissipation plates 32. The heat dissipation plates 32 are 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 dissipation plates 32, and the heat dissipation efficiency is improved.

[0032] In the present invention, the number of the sealing plugs 30 is equal to the number of the heat dissipation cavities 26. 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 cavity 26, and the opening at the top of the radiator 4 is sealed through the sealing plug 30.

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

[0034] In the present invention, a cover plate 21 is fixedly connected to the top of the sealing plug 30, a handle 19 is fixedly connected to the top of the cover plate 21, a positioning sleeve 18 is fixedly connected to the top of the handle 19, and the positioning sleeve 18 is internally threadedly connected to the same positioning screw 20. 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 outer wall of the top of the radiator 4, and a support sleeve 16 is fixedly connected to one side of the support plate 15. The positioning screw 20 is inserted into the inside 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. By rotating the positioning screw 20 through the turntable 22, the support sleeve 16 and the support plate 15 support one end of the positioning screw 20 close to the turntable 22.

[0036] In the present invention, a baffle 17 is fixedly connected to one side of the outer wall of the top of the radiator 4 away from the support plate 15. One end of the positioning screw 20 is in contact with the side surface 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 one side of the second oil supply pipe 12 close to the radiator 4. The on-off of the reflux pipe 27 is controlled by the reflux control valve 28, and the on-off of the second oil supply pipe 12 is controlled by the oil supply control valve 14.

[0038] In the present invention, a sliding seat 9 is fixedly connected to the bottom of the fan bracket 7. A chute 8 is opened on one side of the base 1 close to the fan bracket 7. The sliding seat 9 is slidably connected to the inside of the chute 8. The inner wall of the sliding seat 9 is rotatably connected to uniformly distributed roller drums 10. The bottom plane of the base 1 is tangent to the outer wall of the roller drums 10. When the fan bracket 7 moves, the sliding seat 9 slides along the chute 8, and the roller drums 10 support at the bottom and roll along the ground.

[0039] In the present invention, a positioning frame 25 is fixedly connected to the bottom of one side of the outer wall of the fan bracket 7. A positioning pin 23 is inserted into the middle of the positioning frame 25. Uniformly distributed pin holes 24 are opened at the top of one side 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. The positioning pin 23 is inserted into the positioning frame 25 and the pin holes 24 to realize the firm connection between the fan bracket 7 and the base 1.

[0040] 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 pumps the low-temperature transformer oil inside 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 heat exchange returns to the radiator 4 through the return pipe 27. The fan 6 is started to accelerate the heat exchange between the radiator 4 and the atmosphere and cool the transformer oil. The positioning pin 23 is inserted into the positioning bracket 25 and the pin hole 24 to realize the firm connection between the fan bracket 7 and 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 realized. When the fan bracket 7 moves, the sliding seat 9 slides along the chute 8, and the roller 10 supports at the bottom and rolls along the ground. When the transformer oil flows, it passes through the heat dissipation plate 32 via the oil passing hole 31. Since the heat dissipation cavity 26 alternately blocks the oil passing hole 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 dissipation plate 32 to ensure that the transformer oil fully completes heat exchange. When air flows through the inner wall of the heat dissipation cavity 26 and the fins 29, the inner wall of the heat dissipation cavity 26 and the fins 29 effectively increase the heat dissipation area of the device and further improve the heat dissipation efficiency. When power-off maintenance is performed on the transformer body 2, 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 out the cover plate 21, the sealing plug 30, and the heat dissipation plate 32 from the radiator 4, so that the sandblasted surface of the heat dissipation plate 32 and the channels of the oil passing holes 31 can be cleaned of impurities, which is beneficial to maintaining the heat dissipation capacity of the device.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and 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 support (3), an oil pump (5), a radiator support (13) and a fan support (7). The transformer support (3) is fixedly connected to one side of the top of the base (1), the fan support (7) is fixedly connected to the other side of the top of the base (1), the radiator support (13) 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) on the side close to the transformer support (3). It is characterized in that, 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 the 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 the 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 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 inside of the fan bracket (7) is fixedly connected with evenly distributed fans (6), the body of the radiator (4) is fixedly connected with vertically and staggeredly distributed heat dissipation cavities (26), both ends of the heat dissipation cavity (26) extend to the outside of both sides of the radiator (4), and the inner walls of the heat dissipation cavity (26) are fixedly connected with horizontally and staggeredly distributed fins (29). Evenly distributed sealing plugs (30) are inserted into the top of the radiator (4). Both sides of the bottom of the sealing plug (30) are fixedly connected with heat dissipation plates (32). Evenly distributed oil passing holes (31) are opened at both the upper and lower ends of the heat dissipation plate (32). The heat dissipation plate (32) is made of a metal material with its surface sandblasted. The number of the sealing plugs (30) is equal to the number of the heat dissipation cavities (26). The two heat dissipation plates (32) at the bottom of the sealing plug (30) are respectively attached to the outer walls of both sides of the adjacent heat dissipation cavity (26). The outer wall of the heat dissipation cavity (26) blocks the oil passing holes (31) at one end of the adjacent two heat dissipation plates (32), and the adjacent two heat dissipation cavities (26) respectively block the oil passing holes (31) at different ends of the heat dissipation plate (32).

2. The adjustable heat dissipation device for a transformer according to claim 1, wherein, The tops of the sealing plugs (30) are all fixedly connected with cover plates (21). The tops of the cover plates (21) are all fixedly connected with handles (19). The tops of the handles (19) are all fixedly connected with positioning sleeves (18). The same positioning screw (20) is threadedly connected inside the positioning sleeve (18).

3. The adjustable heat dissipation device for a transformer according to claim 2, wherein, One side of the outer wall of the top of the radiator (4) is fixedly connected with a support plate (15), and a support sleeve (16) is fixedly connected to one side of the support plate (15). The positioning screw (20) is inserted into the inside of the support sleeve (16). One end of the positioning screw (20) close to the support sleeve (16) is fixedly connected with a turntable (22).

4. An adjustable heat dissipation device for a transformer according to claim 3, characterized in that, One side of the outer wall of the top of the radiator (4) away from the support plate (15) is fixedly connected with a baffle (17). One end of the positioning screw (20) is in contact with the side surface of the support plate (15).

5. An adjustable heat dissipation device for a transformer according to claim 1, characterized in that, A return control valve (28) is arranged in the middle of the return pipe (27). An oil delivery control valve (14) is arranged on the side of the second oil delivery pipe (12) close to the radiator (4).

6. The adjustable heat dissipation device for a transformer according to claim 1, characterized in that, A sliding seat (9) is fixedly connected to the bottom of the fan bracket (7). A sliding groove (8) is formed on one 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). A roller (10) evenly distributed is rotatably connected to the inner wall of the sliding seat (9). The bottom plane of the base (1) is tangent to the outer wall of the roller (10).

7. The adjustable heat dissipation device for a transformer according to claim 6, wherein, 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). A uniformly distributed pin hole (24) is formed in the top of the base (1) close to one side of the positioning pin (23). The bottom end of the positioning pin (23) is inserted into the inside of one of the pin holes (24).

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