Oil immersed transformer

Abstract

The utility model provides an oil immersed transformer which comprises a transformer body, a heat dissipation mechanism capable of conducting heat dissipation on the transformer body is arranged on the transformer body, and the heat dissipation mechanism comprises a plurality of cooling fins vertically and fixedly connected to the front face and the rear face of the transformer body and a water cooling assembly for further conducting heat dissipation on the cooling fins. A plurality of radiating holes are uniformly formed in the side surface of each radiating fin; the water cooling assembly comprises a horizontal water tank fixedly connected to the bottom of the transformer body, a plurality of heat dissipation pipes surrounding the transformer body are arranged above the water tank in parallel, the heat dissipation pipes are correspondingly located in the heat dissipation holes of the heat dissipation fins respectively, and one sides of the heat dissipation pipes communicate with vertically-arranged water inlet pipes. According to the cooling device, the cooling fins, the water tank, the water pump, the cooling pipe and the air cooling assembly are arranged, the oil immersed transformer can be cooled more rapidly, efficiently, evenly and continuously, meanwhile, the water storage assembly capable of providing a natural water source is further arranged, and water resources are effectively saved.

Description

Technical Field

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

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). In electrical equipment and wireless circuits, transformers are often used to increase or decrease voltage, match impedance, and provide safety isolation.

[0003] The components of oil-immersed transformers include the body (core, winding, insulation, lead wire), transformer oil, oil tank and cooling device, voltage regulating device, protective device (dehumidifier, safety airway, gas relay, oil storage cabinet and temperature measuring device, etc.) and outlet bushing. As a new type of high-performance transformer with a more reasonable structure and better performance, the oil-immersed transformer has three core columns arranged in an equilateral triangle, with no gap in the magnetic circuit, tighter winding, and the same length of the three magnetic circuits, which are the shortest. The cross-sectional area of ​​the core column is closer to a circle, so the performance is further improved, the loss is reduced, the noise is reduced, the three phases are balanced, and the third harmonic component is reduced. This product is more suitable for the transformation of urban and rural, industrial and mining enterprises, and is more suitable for combined transformers and prefabricated transformers.

[0004] Oil-immersed transformers generate a certain amount of heat when in use. At present, oil-immersed transformers are equipped with multiple sets of heat sinks on their surfaces to achieve heat dissipation, but these heat sinks have poor heat dissipation effects, low heat dissipation efficiency, and slow heat dissipation speed, which can easily lead to excessive temperatures of the oil-immersed transformer during operation, causing work problems and even causing it to fail to work properly. Utility Model Content

[0005] The utility model discloses an oil-immersed transformer, which solves the problem that the traditional oil-immersed transformer has poor thermal effect, low heat dissipation efficiency and slow heat dissipation speed, which causes the oil-immersed transformer to have too high temperature during operation, thus causing working problems and even causing the oil-immersed transformer to be unable to be used normally.

[0006] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions:

[0007] The heat dissipation mechanism comprises a plurality of heat sinks which are fixedly connected to the front and rear of the transformer body and a water cooling assembly which further dissipates heat from the heat sinks. A plurality of heat dissipation holes are evenly arranged on the side of each heat sink. The water cooling assembly comprises a horizontal water tank which is fixedly connected to the bottom of the transformer body. A plurality of heat dissipation pipes which surround the transformer body are arranged in parallel above the water tank. The heat dissipation pipes are respectively and correspondingly located in the heat dissipation holes of each heat sink. A vertically arranged water inlet pipe is connected to one side of the plurality of heat dissipation pipes. The bottom end of the water inlet pipe is connected to the water tank. A water pump which is connected to the water inlet pipe is arranged on the water tank. A hole which is far away from the water pump is arranged on the top surface of the water tank. A water outlet pipe which is connected to the heat dissipation pipe is arranged in the hole. A cover plate is hinged on the top surface of the water tank. An air cooling assembly which can continuously cool the water in the water tank is arranged in the water tank. A water storage assembly which can provide a natural water source for the water tank is arranged above the transformer body.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] A certain amount of water is injected into the water tank through the cover plate. When the oil-immersed transformer needs to dissipate heat, the heat of the oil-immersed transformer can be evenly dispersed to the heat sink by setting a heat sink. The water pump is turned on to pump the water in the water tank into the water inlet pipe and then injected into the heat dissipation pipe. Since the heat dissipation pipes are respectively located in the heat dissipation holes of each heat sink and the heat dissipation pipes can surround the transformer body, the heat sink and the surrounding area of ​​the transformer can be cooled quickly and evenly, and the water that has absorbed the heat is re-injected into the water tank through the water outlet pipe. At this time, since the water tank is provided with an air cooling component that can continuously cool the water in the water tank, the hot water can be cooled quickly, so that the water pump can continuously inject cold water into the heat dissipation pipe, thereby realizing continuous and efficient heat dissipation of the oil-immersed transformer; in addition, a water storage component that can provide a natural water source for the water tank is also provided above the transformer body, which effectively saves water resources. The utility model can cool the oil-immersed transformer more quickly, efficiently, evenly and continuously by arranging heat sinks, water tanks, water pumps, heat pipes and air cooling components. At the same time, a water storage component that can provide natural water sources is also provided, effectively saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view schematic diagram of the utility model;

[0011] Figure 2 It is a top view schematic diagram of the transformer body of the utility model;

[0012] Figure 3 It is a top view schematic diagram of the water tank of the utility model;

[0013] Figure 4It is a side view schematic diagram of the heat sink of the utility model;

[0014] Figure 5 It is a front cross-sectional view of the water storage assembly of the utility model;

[0015] In the figure: 1. transformer body; 2. heat sink; 21. heat dissipation hole; 3. water tank; 31. heat dissipation pipe; 32. water inlet pipe; 33. water pump; 34. water outlet pipe; 35. hole; 36. cover plate; 361. handle; 37. cavity; 38. overflow pipe; 4. support frame; 41. motor; 42. fan blade; 43. air outlet; 44. dust net; 5. water storage plate; 51. first guard plate; 52. channel; 53. filter plate; 54. second guard plate; 55. support column; 6. connecting pipe; 7. universal wheel. DETAILED DESCRIPTION

[0016] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides an oil-immersed transformer, including a transformer body 1, on which a heat dissipation mechanism for dissipating heat for the transformer body 1 is provided, the heat dissipation mechanism including a plurality of heat sinks 2 vertically fixedly connected to the front and rear of the transformer body 1 and a water cooling assembly for further dissipating heat for the heat sink 2, and a plurality of heat dissipation holes 21 are evenly opened on the side of each heat sink 2; the water cooling assembly includes a water tank 3 fixedly connected to the bottom of the transformer body 1 and in a horizontal position, and a plurality of heat dissipation pipes 31 surrounding the transformer body 1 are arranged in parallel above the water tank 3, and the heat dissipation pipes 31 are respectively connected to the bottom of the transformer body 1 and the bottom of the transformer body 1. The heat dissipation holes 21 of each heat sink 2 are correspondingly located. One side of the plurality of heat dissipation tubes 31 is connected with a vertically arranged water inlet pipe 32. The bottom end of the water inlet pipe 32 is connected with the water tank 3. The water tank 3 is provided with a water pump 33 connected with the water inlet pipe 32. The top surface of the water tank 3 is provided with a hole 35 away from the water pump 33. The hole 35 is provided with a water outlet pipe 34 connected with the heat dissipation tube 31. The top surface of the water tank 3 is hinged with a cover plate 36. The water tank 3 is provided with an air cooling component that can continuously cool the water in the water tank 3. The top of the transformer body 1 is provided with a water storage component that can provide a natural water source for the water tank 3. The material of the heat dissipation tube 31 can be preferably a material with good thermal conductivity, such as copper, so that it can cool the heat sink 2 and the surrounding of the transformer body 1 more quickly and efficiently.

[0018] like Figure 2 and Figure 3As shown, the top surface of the water tank 3 is provided with a cavity 37 away from the water pump 33, and the air cooling assembly includes a support frame 4 horizontally fixedly connected in the cavity 37, a motor 41 is fixed on the bottom surface of the support frame 4, and a fan blade 42 located in the water tank 3 is fixed at the output end of the motor 41, and a cover plate 36 is arranged away from the cavity 37, and an air outlet 43 is provided on the cover plate 36. When the water that has absorbed heat is re-injected into the water tank 3 through the outlet pipe 34, the motor 41 is started, and the output end of the motor 41 drives the fan blade 42 to rotate. The wind generated when the fan blade 42 rotates will enter from the cavity 37 and then be discharged from the air outlet 43, so that continuous heat dissipation of the hot water flowing back can be achieved; the motor 41 is preferably set as a waterproof motor to ensure that the motor 41 can work stably and permanently even if it is stained with water.

[0019] like Figure 1 and Figure 5 As shown, the water storage assembly includes a water storage plate 5 horizontally arranged above the transformer body 1 and a first protective plate 51 fixedly connected to the side of the water storage plate 5 and surrounding the water storage plate 5, and the first protective plate 51 is arranged to be inclined upward, and a channel 52 is opened on the water storage plate 5, and the channel 52 is connected to a connecting pipe 6 whose bottom end is connected to the top surface of the water tank 3, a filter plate 53 is fixed in the channel 52, and a support column 55 fixedly connected to the water tank 3 is vertically fixed to the bottom surface of the water storage plate 5. When the transformer is placed outdoors for use in a rainy environment, since a water storage plate 5 is arranged above the transformer body 1, the transformer body 1 can be shielded from rain, and since a first protective plate 51 that can surround the water storage plate 5 is fixed to the side of the water storage plate 5 and the first protective plate 51 is arranged to be tilted upward, rainwater can be collected between the first protective plate 51 and the water storage plate 5, and the collected rainwater is filtered by the filter plate 53 and then enters the water tank 3 through the connecting pipe 6, thereby providing the water tank 3 with a natural water source that can be used for circulating heat dissipation, effectively saving water resources.

[0020] like Figure 1 and Figure 5 As shown, the top surface of the water storage plate 5 is inclined toward one side of the connecting pipe 6, and a second protective plate 54 inclined downward is fixed to the lower end of the first protective plate 51. The top surface of the water storage plate 5 is inclined toward one side of the connecting pipe 6, which can make it easier for rainwater between the first protective plate 51 and the water storage plate 5 to flow into the connecting pipe 6; and the second protective plate 54 inclined downward can guide the rainwater, effectively preventing the rainwater from flowing along the outer side of the first protective plate 51 inclined upward to the top surface of the water tank 3 and affecting the normal use of the transformer.

[0021] like Figure 1 and Figure 3As shown, the holes 35 can be set to be a plurality of holes evenly arranged horizontally, and the water outlet pipes 34 can also be set to be a corresponding plurality, and each water outlet pipe 34 is respectively connected to each heat dissipation pipe 31. By setting a plurality of holes 35 and a plurality of water outlet pipes 34, the water that has absorbed heat can flow back to the water tank 3 in a dispersed manner, thereby ensuring that the air cooling component can cool the hot water in the water tank 3 more efficiently and quickly.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the upper end of one side of the water tank 3 is connected to an overflow pipe 38 located outside the water tank 3, and a handle 361 is fixed to the top surface of the cover plate 36. The overflow pipe 38 can prevent excessive water in the water tank 3 from overflowing from the top and affecting the normal operation of the transformer; the handle 361 can facilitate the staff to open the cover plate 36, so as to add a certain amount of water into the water tank 3, ensuring that the water cooling component can work normally even when it is not raining.

[0023] like Figure 2 As shown, a dust screen 44 covering the cavity 37 is detachably connected to the water tank 3. The dust screen 44 can prevent dust and other tiny particles from entering the fan blades 42, ensuring the continuous and stable operation of the fan blades 42 and extending their service life; the dust screen 44 is detachably bolted to the water tank 3, so that the staff can clean and replace it regularly.

[0024] like Figure 1 As shown, a universal wheel 7 is fixed to the bottom of the water tank 3. The universal wheel 7 adopts a universal wheel 7 with a self-locking function, which is convenient for the staff to move and fix the entire device.

[0025] When in use, first open the cover plate 36 through the handle 361 and inject a certain amount of water into the water tank 3. When the oil-immersed transformer needs to dissipate heat, the heat sink 2 is arranged on the outside of the transformer body 1, so that the heat of the transformer body 1 can be evenly dispersed to the heat sink 2. The water pump 33 is turned on to pump the water in the water tank 3 into the water inlet pipe 32, and then injected into the heat dissipation pipe 31. Since the heat dissipation pipes 31 are respectively located in the heat dissipation holes 21 of each heat sink 2 and the heat dissipation pipes 31 can surround the transformer body 1, the heat sink 2 and the surrounding of the transformer body 1 can be quickly and evenly cooled, and the water that has absorbed the heat is re-injected into the water tank 3 through the water outlet pipe 34; then, the motor 41 is started, and the output end of the motor 41 drives the fan blades 42 to rotate. The wind generated when the fan blades 42 rotate will enter from the cavity 37 and then be discharged from the air outlet 43, so that the continuous heat dissipation of the hot water flowing back can be achieved, so that the water pump 33 can continuously inject cold water into the heat dissipation pipe 31, thereby achieving continuous and efficient heat dissipation of the transformer body 1;

[0026] When the transformer is placed outdoors for use and the use environment is a rainy day, since a water storage plate 5 is arranged above the transformer body 1, the transformer body 1 can be shielded from rain, and since a first protective plate 51 that can surround the water storage plate 5 is fixed to the side of the water storage plate 5 and the first protective plate 51 is arranged to be tilted upward, rainwater can be collected between the first protective plate 51 and the water storage plate 5, and the collected rainwater is filtered by the filter plate 53 and then enters the water tank 3 through the connecting pipe 6, thereby providing the water tank 3 with a natural water source that can be used for circulating heat dissipation, effectively saving water resources; and if the use environment is a sunny day, a certain amount of water can be added to the water tank 3 through the cover plate 36 to ensure that the water cooling component can work normally even when it is not raining.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An oil-immersed transformer, comprising a transformer body (1), characterized in that: The transformer body (1) is provided with a heat dissipation mechanism capable of dissipating heat from the transformer body (1). The heat dissipation mechanism comprises a plurality of heat sinks (2) vertically fixedly connected to the front and rear sides of the transformer body (1) and a water cooling assembly for further dissipating heat from the heat sinks (2), and a plurality of heat dissipation holes (21) are evenly formed on the side of each heat sink (2); The water cooling assembly comprises a horizontal water tank (3) fixedly connected to the bottom of the transformer body (1), a plurality of heat dissipation pipes (31) surrounding the transformer body (1) are arranged in parallel above the water tank (3), and the heat dissipation pipes (31) are respectively and correspondingly located in the heat dissipation holes (21) of each heat sink (2), one side of the plurality of heat dissipation pipes (31) is connected to a vertically arranged water inlet pipe (32), the bottom end of the water inlet pipe (32) is connected to the water tank (3), a water pump (33) connected to the water inlet pipe (32) is arranged on the water tank (3), a hole (35) away from the water pump (33) is opened on the top surface of the water tank (3), a water outlet pipe (34) connected to the heat dissipation pipe (31) is arranged in the hole (35), and a cover plate (36) is hingedly connected to the top surface of the water tank (3); The water tank (3) is provided with an air cooling component capable of continuously cooling the water in the water tank (3), and a water storage component capable of providing a natural water source for the water tank (3) is provided above the transformer body (1).

2. The oil-immersed transformer according to claim 1, characterized in that: The top surface of the water tank (3) is provided with a cavity (37) away from the water pump (33); the air cooling assembly comprises a support frame (4) horizontally fixedly connected in the cavity (37); a motor (41) is fixed on the bottom surface of the support frame (4); a fan blade (42) located in the water tank (3) is fixed at the output end of the motor (41); the cover plate (36) is arranged away from the cavity (37); and an air outlet (43) is provided on the cover plate (36).

3. The oil-immersed transformer according to claim 1, characterized in that: The water storage assembly comprises a water storage plate (5) horizontally arranged above the transformer body (1) and a first protective plate (51) fixedly connected to the side of the water storage plate (5) and surrounding the water storage plate (5), wherein the first protective plate (51) is arranged to be inclined upward, a channel (52) is provided on the water storage plate (5), a connecting pipe (6) whose bottom end is connected to the top surface of the water tank (3) is connected to the channel (52), a filter plate (53) is fixed in the channel (52), and a support column (55) fixedly connected to the water tank (3) is vertically fixed to the bottom surface of the water storage plate (5).

4. The oil-immersed transformer according to claim 3, characterized in that: The top surface of the water storage plate (5) is arranged to be inclined toward one side of the connecting pipe (6), and a second protective plate (54) arranged to be inclined downward is fixed to the lower end of the first protective plate (51).

5. The oil-immersed transformer according to claim 1, characterized in that: The holes (35) may be arranged in a number that is evenly and horizontally arranged, and the water outlet pipes (34) may be arranged in a number that is corresponding, and each water outlet pipe (34) is respectively connected to each heat dissipation pipe (31).

6. The oil-immersed transformer according to claim 2, characterized in that: An upper end of one side of the water tank (3) is connected to an overflow pipe (38) located outside the water tank (3), and a handle (361) is fixed to the top surface of the cover plate (36).

7. The oil-immersed transformer according to claim 2, characterized in that: The water tank (3) is detachably connected to a dustproof net (44) for covering the cavity (37).

8. The oil-immersed transformer according to claim 1, characterized in that: A universal wheel (7) is fixed to the bottom of the water tank (3).

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