An external intelligent cloud oil-immersed transformer air-cooled cooler

Abstract

The present invention relates to the field of transformer technology, and discloses an external intelligent cloud oil-immersed transformer air-cooled cooler, comprising a housing, a support platform, a winding, and transformer oil. Fin-tube heat exchangers are provided on the front and rear surfaces of the housing, and the fin-tube heat exchangers include a left heat sink and a right heat sink. A liquid outlet pipe and a liquid inlet pipe are respectively provided at the upper and lower ends of the fin-tube heat exchangers. A thin cavity is provided inside the fin-tube heat exchangers, and the liquid outlet pipe and the liquid inlet pipe are connected through the thin cavity inside the fin-tube heat exchangers. The present invention monitors the temperature of the transformer in real time. When the temperature of the transformer is abnormal, the transformer is quickly cooled by cascade refrigeration technology, thereby quickly reducing the temperature of the transformer to a normal range. Moreover, through the special fin structure, when performing convection heat dissipation, the cold air flow will form a vortex when passing through the fins of this special structure, thereby fully exchanging heat with the transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to an external intelligent cloud oil-immersed transformer air-cooled cooler. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are a primary coil, a secondary coil, and an iron core. Transformers perform various functions, including voltage conversion, current conversion, impedance conversion, isolation, and voltage regulation. They are categorized by their intended use into power transformers and special transformers.

[0003] The existing patent discloses a transformer with automatic air cooling and heat dissipation in high-temperature areas (publication number CN114334362A), which relates to the field of transformer technology and includes a transformer body, a heat dissipation fan, and an auxiliary heat dissipation component. The outside of the transformer body is installed with an outer cover shell, and a temperature detection component is installed in the middle of the front and rear of the outer cover shell. A first displacement component is installed above the outer cover shell, and a connecting plate is provided on the lower side of the first displacement component. The connecting plate passes through the inner wall groove of the outer cover shell, and a movable outer frame is fixed below the connecting plate. This patent only discloses a technical solution for dissipating heat from the transformer through air cooling, and because the fan adopts a fixed air outlet design, it is easy for heat to accumulate in the blind area of the fan. Summary of the Invention

[0004] The main technical problem solved by the present invention is to provide an external intelligent cloud oil-immersed transformer air-cooled cooler, which solves the problems in the above-mentioned background technology.

[0005] To solve the above technical problems, according to one aspect of the present invention, more specifically, an external intelligent cloud oil-immersed transformer air-cooled cooler includes a housing, a support platform, a winding, and transformer oil. Fin-tube heat exchangers are provided on the front and rear surfaces of the housing, and the fin-tube heat exchangers include a left heat sink and a right heat sink. A liquid outlet pipe and a liquid inlet pipe are respectively provided at the upper and lower ends of the fin-tube heat exchangers. A thin cavity is provided inside the fin-tube heat exchangers, and the liquid outlet pipe and the liquid inlet pipe are connected through the thin cavity inside the fin-tube heat exchangers.

[0006] A bottom box is installed below the shell, and a centrifugal pump structure and four filter chambers are provided in the bottom box. Four conduits 1 are connected to the surface of the centrifugal pump structure, and the other ends of the four conduits 1 respectively penetrate into the four filter chambers. An oil-gas separator and an oil filter are provided inside the filter chamber. A conduit 2 is provided at the liquid outlet of the oil filter, and the other end of the conduit 2 is connected to the liquid inlet pipe.

[0007] There is still a right U-frame between the left heat sink and the right heat sink, and two fans are arranged inside the U-frame.

[0008] Furthermore, the surface of the fin-tube heat exchanger is provided with fins, and the fins are used to form vortices when the cold air circulates.

[0009] Furthermore, an oil outlet groove is provided inside the fin-tube heat exchanger and on the surface of the liquid inlet pipe, and an oil inlet groove is provided inside the fin-tube heat exchanger and on the surface of the liquid outlet pipe.

[0010] Furthermore, the centrifugal pump structure includes a pump housing, motor 2, a turboprop and a liquid inlet. Motor 2 is located below the pump housing, and the turboprop is fixedly sleeved on the output shaft of motor 2. The liquid inlet is used to connect the housing with the interior of the pump housing.

[0011] Furthermore, two support frames are provided inside the shell, and the winding is fixedly installed inside the shell through the two support frames; auxiliary heat sinks are provided on the left and right side surfaces of the shell.

[0012] Furthermore, a protective shell is fixedly mounted on the surface of the U-frame, and a through opening is opened on both the left and right sides of the protective shell. Two swingable mounting brackets are provided inside the protective shell, and the two fans are respectively arranged inside the U-frame through the two mounting brackets.

[0013] A middle partition is provided inside the U frame and between the two fans, and a circular cover is provided on the outer sides of the two fans.

[0014] Furthermore, the ends of the two mounting brackets are each provided with a rotating shaft, and the other ends of the two rotating shafts pass through the interior of the protective shell and are sleeved with a swing plate, and the two swing plates are symmetrically distributed;

[0015] A swing ring capable of moving left and right is provided between the two swing disks. Ring teeth are provided on the upper and lower sides of the swing ring. Disk teeth are provided on the arc ends of the two swing disks, and the ring teeth are meshed and connected with the disk teeth.

[0016] Furthermore, a linear slide groove is provided inside the swing ring, and a fixed slider is fixedly installed on the central surface of the U frame, and the fixed slider is slidably connected to the linear slide groove;

[0017] The left and right sides of the fixed sliding block are both fixedly connected with a return spring, and the other ends of the return springs are both fixedly connected to the inner surface of the swing ring.

[0018] Furthermore, four connecting columns are provided on the surface of the swing ring, and driving rings are installed at the other ends of the four connecting columns, and the driving rings and the swing ring are distributed perpendicular to each other.

[0019] Furthermore, a vertical slide groove is opened inside the driving ring, and a motor 1 is installed on the surface of the protective shell. The output shaft of the motor 1 passes through the interior of the protective shell and is sleeved with a rotating part. A column is provided at the other end of the rotating part, and the column is sleeved inside the vertical slide groove.

[0020] Beneficial effects:

[0021] 1. The present invention monitors the temperature of the transformer in real time. When the temperature of the transformer is abnormal, the transformer is quickly cooled by cascade refrigeration technology, thereby quickly reducing the temperature of the transformer to a normal range.

[0022] 2. The present invention uses a special fin structure so that when performing convection heat dissipation, the cold air flow will form a vortex when passing through the specially structured fins, thereby fully exchanging heat with the transformer.

[0023] 3. The present invention improves the efficiency of the fin-tube heat exchanger in removing heat from the transformer oil by the rapid flow of the transformer oil.

[0024] 4. The present invention uses the two fans to swing in an "inward-facing" or "outward-facing" pattern, and since the two fans blow air in opposite directions, this can increase the range of air circulation on the fin-tube heat exchanger, thereby improving the heat dissipation efficiency of the fin-tube heat exchanger.

[0025] 5. In this invention, transformer oil above a set temperature is filtered through an oil filter from the oil-immersed transformer drain port, degassed in an oil-gas separator, pumped through an oil pump, and fed to a fin-tube heat exchanger. A fan cools the oil oil to 10°C before returning it to the transformer's oil inlet. This cycle repeats, cooling the transformer through natural convection and external forced convection. The pump and fan are then stopped when the temperature drops below the set temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a transformer oil circulation flow chart of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the present invention from an upper perspective;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention from a lower perspective;

[0029] Figure 4 is a cross-sectional view of the bottom box structure of the present invention;

[0030] Figure 5 is a side sectional view of the present invention;

[0031] Figure 6 It is a cross-sectional view of the fin-tube heat exchanger structure of the present invention;

[0032] Figure 7 is a cross-sectional view of the protective shell structure of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the U-frame and its internal fan of the present invention;

[0034] Figure 9 Schematic diagram of the swing ring, drive ring and rotating member of the present invention;

[0035] Figure 10 Schematic diagram of the first motor and the rotating part of the present invention;

[0036] Figure 11 Schematic diagram of the mounting bracket and the swing plate of the present invention.

[0037] In the figure: 1. Shell; 2. Bottom box; 3. Auxiliary heat sink; 4. Fin-tube heat exchanger; 5. Fin; 6. Protective shell; 7. Motor 1; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. U-frame; 11. Support platform; 12. Conduit 1; 13. Motor 2; 14. Pump shell; 15. Turbine; 16. Liquid inlet; 17. Filter chamber; 18. Oil filter; 19. Oil-gas separator; 20. Conduit 2; 21. Support frame; 22. Winding; 23. Transformer oil; 24. Thin cavity; 25. Oil inlet groove; 26. Oil outlet groove; 27. Rotating shaft; 28. Swinging plate; 29. Connecting column; 30. Swinging ring; 31. Linear slide; 32. Disc teeth; 33. Fixed slider; 34. Through-hole; 35. Return spring; 36. Ring teeth; 37. Round cover; 38. Middle partition; 39. Fan; 40. Drive ring; 41. Vertical slide; 42. Column; 43. Rotating part; 44. Mounting frame; 401. Left heat sink; 402. Right heat sink. DETAILED DESCRIPTION

[0038] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] like Figure 1- As shown in Figure 11, according to one aspect of the present invention, an external intelligent cloud oil-immersed transformer air-cooled cooler is provided, comprising a housing 1, a support platform 11, a winding 22 and transformer oil 23. Fin-tube heat exchangers 4 are provided on the front and rear surfaces of the housing 1. The fin-tube heat exchangers 4 include a left heat sink 401 and a right heat sink 402. The upper and lower ends of the fin-tube heat exchangers 4 are respectively penetrated by a liquid outlet pipe 9 and a liquid inlet pipe 8. A thin cavity 24 is provided inside the fin-tube heat exchanger 4. The liquid outlet pipe 9 and the liquid inlet pipe 8 are connected through the thin cavity 24 inside the fin-tube heat exchanger 4. Pass; a bottom box 2 is installed under the outer shell 1, and a centrifugal pump structure and four filter chambers 17 are provided in the bottom box 2. The surface of the centrifugal pump structure is connected with four conduits 12. The other ends of the four conduits 12 respectively pass through the four filter chambers 17. An oil-gas separator 19 and an oil filter 18 are provided inside the filter chamber 17. A conduit 20 is provided at the liquid outlet of the oil filter 18. The other end of the conduit 20 is connected to the liquid inlet pipe 8; there is still a right U-frame 10 between the left heat sink 401 and the right heat sink 402, and two fans 39 are provided inside the U-frame 10.

[0041] The working principle of this embodiment is that the transformer oil 23 inside the housing 1 will enter the interior of the pump housing 14 through the liquid inlet 16 under the action of gravity (such as Figure 4 、 5 As shown), at this time, due to the consistency of internal and external pressures and the resistance of the oil-gas separator 19, the transformer oil 23 will not flow. When the temperature of the transformer oil 23 is too high, the motor 2 13 can be started to drive the turboprop 15 to rotate at high speed (as shown). Figure 4 As shown), at this time, the transformer oil 23 enters the interior of the liquid inlet pipe 8 through the conduit 12, the oil-gas separator 19, the oil filter 18 and the guide rail 20 (as shown in FIG. Figure 5 As shown in FIG5 ), the transformer oil 23 in the liquid inlet pipe 8 enters the thin cavity 24 through the oil outlet groove 26, and then flows back to the interior of the housing 1 through the oil inlet groove 25 and the liquid outlet pipe 9, thereby realizing the rapid flow of the transformer oil 23, thereby improving the efficiency of the fin-tube heat exchanger 4 in removing the heat of the transformer oil 23.

[0042] Two fans 39 also can be started synchronously, and the rotation direction of two fans 39 is different. When the fan 39 on top blows air to the left side, the fan 39 below will blow air to the right side, which can improve heat dissipation efficiency.

[0043] Example 2

[0044] like Figure 1As shown in Figure 11, the surface of the finned-tube heat exchanger 4 is provided with fins 5, which are used to form vortices when the cold air circulates. An oil outlet groove 26 is provided inside the finned-tube heat exchanger 4 and on the surface of the liquid inlet pipe 8. An oil inlet groove 25 is provided inside the finned-tube heat exchanger 4 and on the surface of the liquid outlet pipe 9. The centrifugal pump structure includes a pump housing 14, a second motor 13, a turboprop 15, and a liquid inlet 16. The second motor 13 is located below the pump housing 14, and the turboprop 15 is fixedly mounted on the output shaft of the second motor 13. The liquid inlet 16 is used to connect the housing 1 with the interior of the pump housing 14. Two support frames 21 are provided inside the housing 1, and the winding 22 is fixedly installed inside the housing 1 through the two support frames 21; auxiliary heat sinks 3 are provided on the left and right side surfaces of the housing 1.

[0045] The working principle of this embodiment is: through the special structure of the fins 5, when performing convection heat dissipation, the cold air flow will form a vortex when passing through the specially structured fins 5, thereby fully performing heat exchange with the transformer.

[0046] Example 3

[0047] like Figure 1 As shown in Figure 11, a protective shell 6 is fixedly mounted on the surface of the U-frame 10. A through-hole 34 is provided on both the left and right sides of the protective shell 6. Two swingable mounting brackets 44 are provided inside the protective shell 6, and two fans 39 are respectively arranged inside the U-frame 10 through the two mounting brackets 44. A middle partition 38 is provided inside the U-frame 10 and between the two fans 39. A circular cover 37 is provided on the outer side of the two fans 39. A rotating shaft 27 is provided at the end of each of the two mounting brackets 44, and the other ends of the two rotating shafts 27 pass through the interior of the protective shell 6 and are provided with a swinging disc 28. The two swinging discs 28 are symmetrically distributed. A swinging ring 30 that can move left and right is provided between the two swinging discs 28. Ring teeth 36 are provided on the upper and lower sides of the swinging ring 30. Disc teeth 32 are provided at the arc ends of the two swinging discs 28. The ring teeth 36 are meshed with the disc teeth 32. A linear slot 31 is defined within the swing ring 30. A fixed slider 33 is fixedly mounted on the central surface of the U-frame 10, slidably connected to the linear slot 31. Return springs 35 are fixedly attached to both the left and right sides of the fixed slider 33, the other ends of which are fixedly connected to the inner surface of the swing ring 30. Four connecting posts 29 are provided on the surface of the swing ring 30, with a drive ring 40 mounted on the other ends thereof. The drive ring 40 and the swing ring 30 are arranged perpendicular to each other. A vertical slot 41 is defined within the drive ring 40. A motor 7 is mounted on the surface of the protective shell 6. The output shaft of the motor 7 extends through the interior of the protective shell 6 and is fitted with a rotating member 43. A column 42 is provided at the other end of the rotating member 43, which is fitted within the vertical slot 41.

[0048] The working principle of this embodiment is as follows: after the two fans 37 are started, the motor 1 7 is also started. The motor 1 7 drives the rotating member 43 and the column 42 to rotate repeatedly. Since the column 42 is stuck in the vertical slide 41, the column 42 squeezes the inner wall of the vertical slide 41 when it rotates, thereby allowing the driving ring 40 to swing left and right repeatedly. The driving ring 40 is fixedly connected to the swing ring 30 (such as Figure 9 As shown), the swing ring 30 can drive the two swing disks 28 to swing left or right through the teeth, so that the two fans 39 can be transformed into an "inner eight" or "outer eight", and because the blowing directions of the two fans 39 are opposite, this can increase the range of air circulation on the fin-tube heat exchanger 4, thereby improving the heat dissipation efficiency of the fin-tube heat exchanger 4.

[0049] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An external intelligent cloud oil-immersed transformer air-cooled cooler, comprising a housing (1), a support platform (11), a winding (22) and transformer oil (23), characterized in that: Fin-tube heat exchangers (4) are provided on both the front and rear surfaces of the housing (1), wherein the fin-tube heat exchangers (4) include a left heat sink (401) and a right heat sink (402), and a liquid outlet pipe (9) and a liquid inlet pipe (8) are respectively provided through the upper and lower ends of the fin-tube heat exchangers (4), and a thin cavity (24) is provided inside the fin-tube heat exchangers (4), and the liquid outlet pipe (9) and the liquid inlet pipe (8) are communicated through the thin cavity (24) inside the fin-tube heat exchangers (4); A bottom box (2) is installed below the housing (1), and a centrifugal pump structure and four filter chambers (17) are provided in the bottom box (2). Four conduits (12) are connected to the surface of the centrifugal pump structure, and the other ends of the four conduits (12) respectively penetrate into the four filter chambers (17). An oil-gas separator (19) and an oil filter (18) are provided inside the filter chamber (17). A conduit (20) is provided at the liquid outlet of the oil filter (18), and the other end of the conduit (20) is connected to the liquid inlet pipe (8); A U-frame (10) is further provided between the left heat sink (401) and the right heat sink (402), and two fans (39) are provided inside the U-frame (10); A protective shell (6) is fixedly mounted on the surface of the U-frame (10), and a through opening (34) is provided on both the left and right sides of the protective shell (6). Two swingable mounting brackets (44) are provided inside the protective shell (6), and the two fans (39) are respectively arranged inside the U-frame (10) via the two mounting brackets (44); A middle partition (38) is provided inside the U frame (10) and between the two fans (39), and a circular cover (37) is provided on the outside of the two fans (39); The ends of the two mounting frames (44) are each provided with a rotating shaft (27), and the other ends of the two rotating shafts (27) pass through the interior of the protective shell (6) and are sleeved with a swing plate (28), and the two swing plates (28) are symmetrically distributed; A swing ring (30) capable of moving left and right is provided between the two swing disks (28), and ring teeth (36) are provided on both upper and lower sides of the swing ring (30). Disk teeth (32) are provided on the arc ends of the two swing disks (28), and the ring teeth (36) are meshed and connected with the disk teeth (32).

2. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 1 is characterized in that: The surface of the fin-tube heat exchanger (4) is provided with fins (5), and the fins (5) are used to form vortices when cold air circulates.

3. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 1 is characterized in that: An oil outlet groove (26) is provided inside the fin-tube heat exchange plate (4) and on the surface of the liquid inlet pipe (8), and an oil inlet groove (25) is provided inside the fin-tube heat exchange plate (4) and on the surface of the liquid outlet pipe (9).

4. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 1 is characterized in that: The centrifugal pump structure includes a pump housing (14), a second motor (13), a turboprop (15), and a liquid inlet (16), wherein the second motor (13) is located below the pump housing (14), and the turboprop (15) is fixedly sleeved on the output shaft of the second motor (13), and the liquid inlet (16) is used for connecting the housing (1) with the interior of the pump housing (14).

5. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 1 is characterized in that: Two support frames (21) are provided inside the housing (1), and the winding (22) is fixedly mounted inside the housing (1) via the two support frames (21); auxiliary heat sinks (3) are provided on both left and right side surfaces of the housing (1).

6. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 1 is characterized in that: A linear slide groove (31) is provided inside the swing ring (30), and a fixed slider (33) is fixedly installed on the central surface of the U frame (10), wherein the fixed slider (33) is slidably connected to the linear slide groove (31); The left and right sides of the fixed slider (33) are both fixedly connected to a return spring (35), and the other end of the return spring (35) is fixedly connected to the inner surface of the swing ring (30).

7. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 6 is characterized in that: Four connecting columns (29) are provided on the surface of the swing ring (30), and a driving ring (40) is installed at the other end of the four connecting columns (29), wherein the driving ring (40) and the swing ring (30) are arranged perpendicular to each other.

8. The external intelligent cloud oil-immersed transformer air-cooled cooler according to claim 7 is characterized in that: A vertical slide groove (41) is provided inside the driving ring (40), a motor (7) is installed on the surface of the protective shell (6), an output shaft of the motor (7) passes through the interior of the protective shell (6) and is sleeved with a rotating member (43), and a column (42) is provided at the other end of the rotating member (43), wherein the column (42) is sleeved inside the vertical slide groove (41).

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