An energy-saving oil-immersed power transformer

Abstract

The present invention relates to the technical field of transformers, specifically to an energy-saving oil-immersed power transformer, including a transformer housing and a plurality of windings installed in the transformer housing, the interior of the transformer housing is slidably connected with a partition, and the partition is sleeved on the plurality of windings, the interior of the transformer housing is divided into a lower cavity and an upper cavity by the partition, and the transformer housing is provided with a first cooling component and a second cooling component for cooling the interior of the transformer housing, the first cooling component is connected to the lower cavity, and the second cooling component is connected to the upper cavity. The device adopts an innovative dual cooling component design to efficiently cool the interior of the transformer by recycling insulating oil. This design not only improves the cooling efficiency, but also maximizes the use of resources. When the transformer is started, the insulating oil can quickly enter the interior of the transformer housing to cool the windings, effectively preventing equipment damage caused by overheating.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to an energy-saving oil-immersed power transformer. Background Art

[0002] Oil-immersed transformers are mainly composed of iron core, winding, oil tank, oil pillow, insulating bushing, tap changer and gas relay. The working principle of oil-immersed transformer is electromagnetic induction principle. When AC power passes through the winding, it will generate alternating magnetic flux in the iron core, and this alternating magnetic flux will generate induced electromotive force in another winding, thereby realizing voltage conversion. Oil-immersed transformers are also widely used due to their good insulation and heat transfer properties.

[0003] During the operation of traditional oil-immersed power transformers, a large amount of heat is generated due to the current passing through the windings, causing the internal temperature of the transformer to rise. Excessive temperature will not only accelerate the aging of the insulation material inside the transformer and reduce its service life, but may also cause equipment failure and even lead to serious consequences such as fire.

[0004] Or, as disclosed in the publication number "CN117524652A", an oil-immersed power transformer can be manually adjusted according to the daily wind direction of the transformer installation location when the device is used. The oil pump delivers the transformer oil at the bottom of the shell cavity to the heat pipe for flow and heat dissipation. After heat dissipation, the transformer oil flows into the shell cavity again. The device separates the heat dissipation component from the transformer shell, reduces air flow obstacles around the heat dissipation component, improves the heat dissipation efficiency of the heat dissipation component, reduces overheating of the transformer, and is easy to adapt to different wind directions thanks to the rotating design of the heat dissipation component.

[0005] However, the heat dissipation component of the device can only dissipate heat through natural wind, and the heat dissipation efficiency is low. When the transformer continues to work and the temperature rises rapidly, it cannot meet the heat dissipation needs of the transformer, which can easily cause the internal temperature of the transformer to be too high. Being in a high temperature state for a long time may cause the winding temperature to exceed the insulation tolerance temperature and cause insulation damage. At the same time, it accelerates the aging of internal components, causing the transformer to fail to work normally.

[0006] Therefore, those skilled in the art provide an energy-saving oil-immersed power transformer to solve the problems raised in the above background technology. Summary of the invention

[0007] The object of the present invention is to provide an energy-saving oil-immersed power transformer to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An energy-saving oil-immersed power transformer comprises a transformer housing and a plurality of windings installed in the transformer housing, wherein a partition is slidably connected to the interior of the transformer housing, and the partition is sleeved on the plurality of windings, and the interior of the transformer housing is divided into a lower cavity and an upper cavity by the partition, and a first cooling component and a second cooling component for cooling the interior of the transformer housing are arranged on the transformer housing, the first cooling component is connected to the lower cavity, and the second cooling component is connected to the upper cavity, and an atomizing spray component for assisting the second cooling component in cooling is also arranged on the top of the transformer housing, and an adjusting component for controlling the opening of the first cooling component and the second cooling component is also arranged inside the transformer housing;

[0010] A cold water tank is also installed on the top of the transformer housing. Two water pipes are arranged on the cold water tank. The two water pipes are respectively connected to the first cooling component and the atomizing spray component. The water inlet end of the cold water tank is connected to the external water pipe.

[0011] Preferably: the first cooling component comprises a fixing frame, the fixing frame is installed on one side of the transformer housing, a plurality of heat dissipation slots for auxiliary heat dissipation are provided on the fixing frame, a cooling pipe is installed in the fixing frame, a plurality of auxiliary heat sinks for auxiliary heat dissipation of the cooling pipe are also installed in the fixing frame, the oil outlet end of the cooling pipe is connected with the lower cavity inside the transformer housing, an oil pump is provided at the oil outlet end of the cooling pipe, and a filter block is also provided at the oil outlet end of the cooling pipe;

[0012] An atomizing box is arranged on the top of the fixing frame, and the bottom of the atomizing box is connected with the inside of the fixing frame, and the top of the atomizing box is connected with the cold water tank through a water pipe on the cold water tank.

[0013] Preferably: the second cooling component is arranged on the top of the transformer housing, the second cooling component comprises an oil storage cylinder, two support blocks are installed at the bottom of the oil storage cylinder, the oil storage cylinder is installed on the top of the transformer housing through the two support blocks, an oil delivery pipe is arranged on the oil storage cylinder, and the oil delivery pipe is connected with the upper cavity inside the transformer housing, and an oil delivery pump is arranged on the oil delivery pipe;

[0014] A first transmission wheel is also provided on one end of the oil storage cylinder. The end of the first transmission wheel close to the oil storage cylinder passes through the oil storage cylinder and extends into the interior of the oil storage cylinder. The extended end of the first transmission wheel is fixedly connected to a synchronization plate. Two stirring rods are installed on the side of the synchronization plate away from the first transmission wheel.

[0015] Preferably: the atomizing spray assembly includes a driving motor and a connecting pipe, the driving motor is installed on the top of the transformer housing, the output end of the driving motor is fixedly connected to a synchronization rod through a coupling, and the end of the synchronization rod away from the driving motor is fixedly connected to a turntable, a connecting rod is hinged on the side of the turntable away from the driving motor, and the connecting rod is located at an eccentric position of the turntable, the other end of the connecting rod is hinged to a cam, the end of the cam away from the connecting rod is fixed to the connecting pipe, a fixing plate is installed on the side of the top of the transformer housing away from the cold water tank, the side of the cam away from the driving motor is rotatably connected to the fixing plate through a rotating shaft, the cam and the fixing plate are also provided with a synchronization gear, and the synchronization gear is fixedly connected to the rotating shaft, and a cleaning assembly for cleaning the top of the transformer housing is provided below the synchronization gear.

[0016] Preferably: the connecting pipe is mounted above the oil storage cylinder, the other end of the connecting pipe is connected to a hose, the other end of the hose is connected to another water pipe on the cold water tank, and a plurality of atomizing heads are installed on one end of the connecting pipe located directly above the oil storage cylinder, and the spraying directions of the plurality of atomizing heads are all toward the surface of the oil storage cylinder.

[0017] Preferably, a second transmission wheel is also mounted on the synchronization rod, and a transmission belt is arranged on the second transmission wheel, the other end of the transmission belt is sleeved on the first transmission wheel, and the second transmission wheel is connected to the first transmission wheel through the transmission belt.

[0018] Preferably: the regulating assembly comprises a heat exchange tube, in which coolant is arranged, the top of the heat exchange tube is connected with a connecting tube, the top of the connecting tube penetrates the inner wall of the transformer housing and extends to the outside of the transformer housing, a fixing cylinder is installed at the extended end of the connecting tube, a connecting cavity is opened in the fixing cylinder, a piston sheet is slidably connected in the connecting cavity, a control switch is installed in the inner wall of the connecting cavity, and the control switch is used to control the start and stop of the oil pump and the oil delivery pump;

[0019] The coolant in the heat exchange tube is a liquid with a low boiling point.

[0020] Preferably: the cleaning assembly includes absorbent cotton, a connecting plate and a synchronous rack, the absorbent cotton is slidably arranged on the top of the transformer housing, and the absorbent cotton is located directly below the oil storage cylinder, the connecting plate is installed on one end of the absorbent cotton close to the fixed plate, and the other end of the connecting plate is fixed to the side wall of the synchronous rack, the synchronous rack is located below the synchronous gear, and the synchronous rack is meshed with the synchronous gear, and a limiting groove for the sliding of the synchronous rack is also installed on the top of the transformer housing.

[0021] Preferably: two limit bars for limiting the upward and downward sliding range of the partition are installed on the inner walls on both sides of the transformer housing, and a plurality of connecting holes are opened on the transformer housing, and the plurality of connecting holes are respectively connected to the first cooling component and the second cooling component.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts an innovative dual cooling component design, namely a first cooling component and a second cooling component, which efficiently cool the inside of the transformer by recycling insulating oil. This design not only improves the cooling efficiency, but also maximizes the utilization of resources and significantly reduces energy consumption. When the transformer is started, the insulating oil can quickly enter the transformer housing to cool the winding, effectively preventing equipment damage caused by overheating and extending the service life of the transformer.

[0024] 2. The present invention achieves separation of the upper and lower cavities by cleverly arranging a partition, so that the insulating oil can be more evenly distributed in the entire transformer housing during the flow process. When the insulating oil absorbs heat and expands, the pressure in the lower cavity increases. Through the interaction between the connecting pipe and the piston sheet in the fixed cylinder and the control switch, the oil pump and the oil transfer pump are automatically started and shut down. This automatic control not only improves the accuracy of cooling, but also reduces the complexity of manual operation, thereby improving the intelligence level of the transformer.

[0025] 3. The present invention can further accelerate the cooling speed of the insulating oil by injecting cooling water into the atomizing box, spraying it on the cooling pipe, and evenly spraying it on the surface of the oil storage cylinder. The design of the auxiliary heat sink and the stirring rod also greatly improves the cooling efficiency, so that the insulating oil can reach the ideal temperature range more quickly. Through the cleaning component arranged on the top of the transformer shell, the meshing transmission of the synchronous gear and the synchronous rack can drive the absorbent cotton to move back and forth on the top of the transformer shell, and wipe the water droplets dripping from the oil storage cylinder on the transformer shell to avoid water vapor accumulation on the transformer shell to cause corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the first viewing angle of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the transformer housing and the fixing frame in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the second cooling component and the atomizing spray component in the present invention;

[0029] Figure 4 It is a partial structural schematic diagram of the top of the transformer housing in the present invention;

[0030] Figure 5 It is a front view of the inner structure of the transformer housing in the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point A in the middle;

[0032] Figure 7 It is a schematic diagram of part of the structure inside the transformer housing in the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the cooling tube in the present invention.

[0034] In the figure: 1. transformer housing; 11. connecting hole; 12. partition; 13. lower cavity; 14. upper cavity; 15. limit strip; 16. winding; 17. fixing plate; 18. limit groove; 2. first cooling component; 21. fixing frame; 22. heat sink; 23. cooling pipe; 24. auxiliary heat sink; 25. atomizing box; 26. oil pump; 27. filter block; 3. second cooling component; 31. oil storage cylinder; 32. first transmission wheel; 33. synchronization plate; 34. stirring rod; 3 5. Support block; 4. Atomizing spray assembly; 41. Driving motor; 42. Turntable; 43. Connecting rod; 44. Cam; 45. Connecting pipe; 46. Atomizing head; 47. Second transmission wheel; 48. Transmission belt; 49. Synchronous gear; 5. Adjusting assembly; 51. Heat exchange tube; 52. Connecting pipe; 53. Fixed cylinder; 54. Connecting chamber; 55. Piston plate; 56. Control switch; 6. Cold water tank; 7. Cleaning assembly; 71. Absorbent cotton; 72. Connecting plate; 73. Synchronous rack. DETAILED DESCRIPTION

[0035] 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.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] For example, see Figure 1-8An energy-saving oil-immersed power transformer includes a transformer housing 1 and a plurality of windings 16 installed in the transformer housing 1. A partition 12 is slidably connected to the interior of the transformer housing 1, and the partition 12 is sleeved on the plurality of windings 16. The interior of the transformer housing 1 is divided into a lower cavity 13 and an upper cavity 14 by the partition 12. The transformer housing 1 is provided with a first cooling component 2 and a second cooling component 3 for cooling the interior of the transformer housing 1. The first cooling component 2 is connected to the lower cavity 13, and the second cooling component 3 is connected to the upper cavity 14. The top of the transformer housing 1 is also provided with a cooling element to assist the second cooling component 3 in cooling. Atomizing spray component 4, the inside of the transformer housing 1 is also provided with an adjusting component 5 for controlling the opening of the first cooling component 2 and the second cooling component 3, a cold water tank 6 is also installed on the top of the transformer housing 1, and two water pipes are arranged on the cold water tank 6, and the two water pipes are respectively connected to the first cooling component 2 and the atomizing spray component 4, and the water inlet end of the cold water tank 6 is connected to the external water pipe, and two limit bars 15 for limiting the upward and downward sliding range of the partition 12 are also installed on the inner walls on both sides of the transformer housing 1, and a plurality of connecting holes 11 are also opened on the transformer housing 1, and the plurality of connecting holes 11 are respectively connected to the first cooling component 2 and the second cooling component 3;

[0038] When the transformer is started, the insulating oil in the first cooling component 2 or the second cooling component 3 enters the interior of the transformer housing 1 to cool the winding 16 in the transformer housing 1. When the insulating oil in the first cooling component 2 enters the lower cavity 13 in the transformer housing 1, the partition 12 is located at the top of the transformer housing 1 and abuts against the lower cavity 13 near the top of the inner wall of the transformer housing 1. When the insulating oil in the transformer housing 1 gradually absorbs the heat emitted by the winding 16 and gradually expands, the pressure in the lower cavity 13 is higher than the pressure in the first cooling component 2, and the regulating component in the transformer housing 1 5 are heated at the same time, the first cooling component 2 and the second cooling component 3 are adjusted so that the insulating oil in the second cooling component 3 enters the transformer housing 1 from above, and the first cooling component 2 is opened by adjusting the component 5 so that the original insulating oil in the transformer housing 1 returns to the first cooling component 2 for cooling. During the process of the insulating oil in the second cooling component 3 being injected into the upper cavity 14, the partition 12 is gradually pushed so that the partition 12 moves from the side close to the top of the transformer housing 1 to the side close to the bottom, so that the insulating oil in the second cooling component 3 fills the transformer housing 1, and the inside of the transformer housing 1 is cooled;

[0039] In this embodiment, the first cooling component 2 includes a fixed frame 21, which is installed on one side of the transformer housing 1. A plurality of heat dissipation slots 22 for auxiliary heat dissipation are provided on the fixed frame 21. A cooling pipe 23 is installed in the fixed frame 21. A plurality of auxiliary heat sinks 24 for auxiliary heat dissipation of the cooling pipe 23 are also installed in the fixed frame 21. The oil outlet end of the cooling pipe 23 is connected to the lower cavity 13 inside the transformer housing 1, and an oil pump 26 is provided at the oil outlet end of the cooling pipe 23. A filter block 27 is also provided at the oil outlet end of the cooling pipe 23. An atomizer box 25 is provided at the top of the fixed frame 21, and the bottom of the atomizer box 25 is connected to the interior of the fixed frame 21. The top of the atomizer box 25 is connected to the cold water tank 6 through a water pipe on the cold water tank 6.

[0040] Specifically, when the insulating oil in the fixed frame 21 needs to be cooled, the water pipe connected to the atomizing box 25 on the cold water tank 6 is first opened, so that the cooling water in the cold water tank 6 enters the atomizing box 25 through the water pipe, and the cooling water is sprayed on the cooling pipe 23 in the fixed frame 21 through the atomization of the atomizing box 25, so as to cool the insulating oil in the cooling pipe 23, and at the same time, the insulating oil in the cooling pipe 23 is further cooled by the auxiliary heat sink 24, so as to accelerate the cooling speed;

[0041] In this embodiment, the second cooling component 3 is arranged at the top of the transformer housing 1, and the second cooling component 3 includes an oil storage cylinder 31. Two support blocks 35 are installed at the bottom of the oil storage cylinder 31. The oil storage cylinder 31 is installed at the top of the transformer housing 1 through the two support blocks 35. An oil delivery pipe is arranged on the oil storage cylinder 31, and the oil delivery pipe is connected to the upper cavity 14 inside the transformer housing 1. An oil delivery pump is arranged on the oil delivery pipe. A first transmission wheel 32 is also arranged on one end of the oil storage cylinder 31. The end of the first transmission wheel 32 close to the oil storage cylinder 31 passes through the oil storage cylinder 31 and extends The first transmission wheel 32 is connected to the inside of the oil storage cylinder 31, and the extension end of the first transmission wheel 32 is fixedly connected with a synchronization plate 33. Two stirring rods 34 are installed on the side of the synchronization plate 33 away from the first transmission wheel 32. The atomizing spray assembly 4 includes a driving motor 41 and a connecting pipe 45. The driving motor 41 is installed on the top of the transformer housing 1. The output end of the driving motor 41 is fixedly connected with a synchronization rod through a coupling, and the end of the synchronization rod away from the driving motor 41 is fixedly connected with a rotating disk 42. The rotating disk 42 is hinged with a connecting rod 43 on the side away from the driving motor 41, and the connecting rod 43 is located at the rotating disk 42. At the eccentric position of the disk 42, the other end of the connecting rod 43 is hinged with a cam 44, and the end of the cam 44 away from the connecting rod 43 is fixed to the connecting pipe 45. A fixing plate 17 is installed on the side of the top of the transformer housing 1 away from the cold water tank 6, and the side of the cam 44 away from the drive motor 41 is rotatably connected to the fixing plate 17. The cam 44 and the fixing plate 17 are also provided with a synchronous gear 49, and the synchronous gear 49 is fixedly connected to the rotating shaft. A cleaning component 7 for cleaning the top of the transformer housing 1 is provided below the synchronous gear 49. The connecting pipe 45 is mounted on the oil storage Above the cylinder 31, the other end of the connecting pipe 45 is connected to a hose, and the other end of the hose is connected to another water pipe on the cold water tank 6. A plurality of atomizing heads 46 are installed on one end of the connecting pipe 45 located just above the oil storage cylinder 31, and the spraying directions of the plurality of atomizing heads 46 are all toward the surface of the oil storage cylinder 31. A second transmission wheel 47 is also installed on the synchronization rod, and a transmission belt 48 is provided on the second transmission wheel 47. The other end of the transmission belt 48 is sleeved on the first transmission wheel 32, and the second transmission wheel 47 is connected to the first transmission wheel 32 through the transmission belt 48.

[0042] Specifically, when cooling the insulating oil in the oil storage cylinder 31, first open the water pipe on the cold water tank 6 connected to the drive motor 41, so that the cooling water in the cold water tank 6 enters the connecting pipe 45, and start the drive motor 41 at the same time, and drive the turntable 42 to rotate through the drive motor 41. When the turntable 42 rotates, the turntable 42 simultaneously pulls the connecting rod 43 to move, so that the cam 44 rotates. The cam 44 rotates left and right under the action of the connecting rod 43, and the cam 44 drives the connecting pipe 45 to flip left and right. At the same time, the cooling water entering the connecting pipe 45 is atomized and sprayed out under the action of the atomizing head 46, and is evenly sprayed on the surface of the oil storage cylinder 31 through the left and right flipping of the connecting pipe 45, so as to cool the oil storage cylinder 31 and the insulating oil in the oil storage cylinder 31;

[0043] At the same time, when the driving motor 41 drives the rotating disk 42 to rotate, the second transmission wheel 47 provided on the synchronization rod rotates synchronously, and the first transmission wheel 32 is driven to rotate by the second transmission wheel 47 and the transmission belt 48 at the same time, and the first transmission wheel 32 drives the synchronization plate 33 to rotate in the oil storage cylinder 31, so that the two stirring rods 34 continuously stir the insulating oil in the oil storage cylinder 31, so that the insulating oil in the oil storage cylinder 31 is evenly cooled;

[0044] In this embodiment, the regulating assembly 5 includes a heat exchange tube 51, in which a coolant is arranged, and the top of the heat exchange tube 51 is connected with a connecting tube 52, and the top of the connecting tube 52 penetrates the inner wall of the transformer housing 1 and extends to the outside of the transformer housing 1, and a fixed cylinder 53 is installed at the extended end of the connecting tube 52, and a connecting cavity 54 is opened in the fixed cylinder 53, and a piston sheet 55 is slidably connected in the connecting cavity 54, and a control switch 56 is installed in the inner wall of the connecting cavity 54, and the control switch 56 is used to control the start and stop of the oil pump 26 and the oil delivery pump. The coolant in the heat exchange tube 51 is a liquid with a low boiling point;

[0045] Specifically, when the transformer is in use, when the partition 12 is located near the top of the transformer housing 1, the winding 16 in the transformer housing 1 continuously dissipates heat to increase the temperature in the transformer housing 1. When the temperature in the transformer housing 1 continues to rise, the coolant in the heat exchange tube 51 is evaporated by heat at the same time. The volume of the evaporated gas increases and the pressure in the heat exchange tube 51 increases. The gas floats upward along the inside of the heat exchange tube 51 and enters the fixed cylinder 53 through the connecting pipe 52. The piston plate 55 in the connecting cavity 54 moves upward under the push of the steam. The piston plate 55 moves upward and touches the control switch 56, so that the oil pump 26 at the oil outlet end of the cooling tube 23 and the oil delivery pump on the oil storage cylinder 31 are started, and the insulating oil in the lower cavity 13 is pumped out by the oil pump 26. At the same time, the oil delivery pump injects the cooled insulating oil in the oil storage cylinder 31 into the transformer housing 1 to continue cooling.

[0046] When the cooled insulating oil is injected into the transformer housing 1, the heat exchange tube 51 is cooled and the pressure is reduced. The coolant in the heat exchange tube 51 returns to a liquid state and flows back to the heat exchange tube 51 along the connecting tube 52 under the suction effect of the pressure in the heat exchange tube 51. At the same time, the piston plate 55 moves downward and resets under the suction of the heat exchange tube 51. The piston plate 55 moves downward and touches the control switch 56 below, so that the oil delivery pump and the oil pump 26 are turned off, and the transformer housing 1 continues to be cooled.

[0047] In this embodiment, the cleaning assembly 7 includes a water-absorbing cotton 71, a connecting plate 72 and a synchronous rack 73. The water-absorbing cotton 71 is slidably arranged on the top of the transformer housing 1, and the water-absorbing cotton 71 is located directly below the oil storage cylinder 31. The connecting plate 72 is installed on one end of the water-absorbing cotton 71 close to the fixed plate 17, and the other end of the connecting plate 72 is fixed to the side wall of the synchronous rack 73. The synchronous rack 73 is located below the synchronous gear 49, and the synchronous rack 73 is meshed with the synchronous gear 49. A limiting groove 18 for the synchronous rack 73 to slide is also installed on the top of the transformer housing 1.

[0048] When the turntable 42 drives the cam 44 to rotate, the synchronous gear 49 fixed on the rotating shaft rotates at the same time. The rotation of the synchronous gear 49 drives the synchronous rack 73 to move in the limiting groove 18. The synchronous rack 73 drives the absorbent cotton 71 to move back and forth on the top of the transformer housing 1 through the connecting plate 72, so as to clean the top of the transformer housing 1 and wipe off the water droplets dropped from the oil storage cylinder 31 on the transformer housing 1 to avoid water vapor accumulation on the transformer housing 1 and cause corrosion.

[0049] The working principle of the present invention is as follows: when the transformer is started, the insulating oil in the first cooling component 2 or the second cooling component 3 enters the interior of the transformer housing 1 to cool the winding 16 in the transformer housing 1. When the insulating oil in the first cooling component 2 enters the lower cavity 13 in the transformer housing 1, the partition 12 is located at the top of the transformer housing 1 and abuts against the lower cavity 13 near the top of the inner wall of the transformer housing 1. When the insulating oil in the transformer housing 1 gradually absorbs the heat emitted by the winding 16, it gradually expands, making the pressure in the lower cavity 13 higher than the pressure in the first cooling component 2. When the temperature in the transformer housing 1 continues to rise, the coolant in the heat exchange tube 51 is evaporated by the heat at the same time, and the evaporated gas floats upward along the inside of the heat exchange tube 51, passing through The connecting pipe 52 enters the fixed cylinder 53, and the piston plate 55 in the connecting cavity 54 moves upward under the push of steam and touches the control switch 56, so that the oil pump 26 at the oil outlet end of the cooling pipe 23 and the oil pump on the oil storage cylinder 31 are started, and the insulating oil in the lower cavity 13 is extracted by the pressure difference between the oil pump 26 and the transformer housing 1 and the cooling pipe 23. At the same time, the oil pump injects the cooled insulating oil in the oil storage cylinder 31 into the transformer housing 1 to continue cooling. In the process of injecting the insulating oil in the second cooling component 3 into the upper cavity 14, the partition 12 is gradually pushed to move the partition 12 from the side close to the top of the transformer housing 1 to the side close to the bottom, so that the insulating oil in the second cooling component 3 fills the transformer housing 1, and the inside of the transformer housing 1 is cooled;

[0050] When the cooled insulating oil is injected into the transformer housing 1, the heat exchange tube 51 is cooled and the pressure is reduced. The coolant in the heat exchange tube 51 returns to a liquid state and flows back to the heat exchange tube 51 along the connecting tube 52 under the suction effect of the pressure in the heat exchange tube 51. At the same time, the piston plate 55 moves downward and resets under the suction of the heat exchange tube 51. The piston plate 55 moves downward and touches the control switch 56 below, so that the oil delivery pump and the oil pump 26 are turned off, and the transformer housing 1 continues to be cooled.

[0051] When the insulating oil in the fixed frame 21 needs to be cooled, the water pipe connected to the atomizing box 25 on the cold water tank 6 is first opened, and the cooling water in the cold water tank 6 enters the atomizing box 25. The cooling water is sprayed on the cooling pipe 23 in the fixed frame 21 through the atomization of the atomizing box 25, and the insulating oil in the cooling pipe 23 is cooled. At the same time, the insulating oil in the cooling pipe 23 is further cooled by the auxiliary heat sink 24, thereby accelerating the cooling speed.

[0052] When cooling the insulating oil in the oil storage cylinder 31, first open the water pipe on the cold water tank 6 connected to the drive motor 41, so that the cooling water in the cold water tank 6 enters the connecting pipe 45, and start the drive motor 41 at the same time. The drive motor 41 drives the turntable 42 to rotate, and the turntable 42 pulls the connecting rod 43 to move, so that the cam 44 drives the connecting pipe 45 to turn left and right. At the same time, the cooling water entering the connecting pipe 45 is atomized and sprayed out under the action of the atomizing head 46, and is evenly sprayed on the surface of the oil storage cylinder 31 through the left and right turning of the connecting pipe 45. , the oil storage cylinder 31 and the insulating oil in the oil storage cylinder 31 are cooled. At the same time, when the turntable 42 drives the cam 44 to rotate, the synchronous gear 49 fixed on the rotating shaft rotates at the same time, and drives the synchronous rack 73 to move in the limit groove 18. The synchronous rack 73 drives the absorbent cotton 71 to move back and forth on the top of the transformer housing 1 through the connecting plate 72, cleans the top of the transformer housing 1, and wipes the water droplets dripping on the transformer housing 1 from the surface of the oil storage cylinder 31 to avoid water vapor accumulation on the transformer housing 1 to cause corrosion;

[0053] At the same time, when the driving motor 41 drives the turntable 42 to rotate, the second transmission wheel 47 provided on the synchronization rod rotates synchronously, and the first transmission wheel 32 is driven to rotate by the second transmission wheel 47 and the transmission belt 48 at the same time. The first transmission wheel 32 drives the synchronization plate 33 to rotate in the oil storage cylinder 31, so that the two stirring rods 34 continuously stir the insulating oil in the oil storage cylinder 31, so that the insulating oil in the oil storage cylinder 31 is evenly cooled.

[0054] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device belongs to a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can implement it relatively easily. It belongs to the existing technology and will not be elaborated on.

[0055] The above are only preferred specific implementation modes 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 solutions and inventive concepts 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 energy-saving oil-immersed power transformer, comprising a transformer housing (1) and a plurality of windings (16) installed in the transformer housing (1), characterized in that: The interior of the transformer housing (1) is slidably connected to a partition (12), and the partition (12) is sleeved on a plurality of windings (16). The interior of the transformer housing (1) is divided into two parts, a lower cavity (13) and an upper cavity (14), by the partition (12). The transformer housing (1) is provided with a first cooling component (2) and a second cooling component (3) for cooling the interior of the transformer housing (1). The first cooling component (2) is connected to the lower cavity (13), and the second cooling component (3) is connected to the upper cavity (14). The top of the transformer housing (1) is also provided with an atomizing spray component (4) for assisting the second cooling component (3) in cooling. The interior of the transformer housing (1) is also provided with an adjusting component (5) for controlling the opening of the first cooling component (2) and the second cooling component (3). The first cooling component (2) comprises a fixing frame (21), the fixing frame (21) being mounted on one side of the transformer housing (1), the fixing frame (21) being provided with a plurality of heat dissipation slots (22) for assisting heat dissipation, a cooling pipe (23) being mounted in the fixing frame (21), a plurality of auxiliary heat sinks (24) for assisting the cooling pipe (23) in dissipating heat being mounted in the fixing frame (21), an oil outlet end of the cooling pipe (23) being connected to a lower cavity (13) inside the transformer housing (1), an oil pump (26) being provided at the oil outlet end of the cooling pipe (23), and a filter block (27) being provided at the oil outlet end of the cooling pipe (23); An atomizing box (25) is provided on the top of the fixing frame (21), and the bottom of the atomizing box (25) is connected to the interior of the fixing frame (21), and the top of the atomizing box (25) is connected to the cold water tank (6) via a water pipe on the cold water tank (6); The second cooling component (3) is arranged on the top of the transformer housing (1), and the second cooling component (3) comprises an oil storage cylinder (31), two support blocks (35) are installed at the bottom of the oil storage cylinder (31), and the oil storage cylinder (31) is installed on the top of the transformer housing (1) through the two support blocks (35), and an oil delivery pipe is arranged on the oil storage cylinder (31), and the oil delivery pipe is connected to the upper cavity (14) inside the transformer housing (1), and an oil delivery pump is arranged on the oil delivery pipe; A first transmission wheel (32) is also provided at one end of the oil storage cylinder (31); an end of the first transmission wheel (32) close to the oil storage cylinder (31) penetrates the oil storage cylinder (31) and extends into the interior of the oil storage cylinder (31); a synchronization plate (33) is fixedly connected to the extended end of the first transmission wheel (32); and two stirring rods (34) are installed on a side of the synchronization plate (33) away from the first transmission wheel (32); The atomizing spray assembly (4) comprises a driving motor (41) and a connecting pipe (45), wherein the driving motor (41) is mounted on the top of the transformer housing (1), the output end of the driving motor (41) is fixedly connected to a synchronization rod via a coupling, and the end of the synchronization rod away from the driving motor (41) is fixedly connected to a rotating disk (42), a connecting rod (43) is hingedly connected to the side of the rotating disk (42) away from the driving motor (41), and the connecting rod (43) is located at an eccentric position of the rotating disk (42), and the other end of the connecting rod (43) is hingedly connected to a cam (44), One end of the cam (44) away from the connecting rod (43) is fixed to the connecting pipe (45); a fixing plate (17) is installed on the side of the top of the transformer housing (1) away from the cold water tank (6); the side of the cam (44) away from the drive motor (41) is rotatably connected to the fixing plate (17) via a rotating shaft; the cam (44) and the fixing plate (17) are further provided with a synchronous gear (49), and the synchronous gear (49) is fixedly connected to the rotating shaft; a cleaning component (7) for cleaning the top of the transformer housing (1) is provided below the synchronous gear (49); The cleaning assembly (7) comprises a water-absorbing cotton (71), a connecting plate (72) and a synchronous rack (73); the water-absorbing cotton (71) is slidably arranged on the top of the transformer housing (1), and the water-absorbing cotton (71) is located directly below the oil storage cylinder (31); the connecting plate (72) is installed on one end of the water-absorbing cotton (71) close to the fixed plate (17); the other end of the connecting plate (72) is fixed to the side wall of the synchronous rack (73); the synchronous rack (73) is located below the synchronous gear (49), and the synchronous rack (73) is meshed with the synchronous gear (49); and a limiting groove (18) for the synchronous rack (73) to slide is also installed on the top of the transformer housing (1); The regulating assembly (5) comprises a heat exchange tube (51), wherein a coolant is arranged in the heat exchange tube (51), wherein the top of the heat exchange tube (51) is connected to a connecting tube (52), wherein the top of the connecting tube (52) penetrates the inner wall of the transformer housing (1) and extends to the outside of the transformer housing (1), wherein a fixing cylinder (53) is installed at the extended end of the connecting tube (52), wherein a connecting cavity (54) is provided in the fixing cylinder (53), wherein a piston plate (55) is slidably connected in the connecting cavity (54), and wherein a control switch (56) is installed in the inner wall of the connecting cavity (54), wherein the control switch (56) is used to control the start and stop of the oil pump (26) and the oil delivery pump; the coolant in the heat exchange tube (51) is a liquid with a relatively low boiling point.

2. The energy-saving oil-immersed power transformer according to claim 1, characterized in that: A cold water tank (6) is also installed on the top of the transformer housing (1), and two water pipes are arranged on the cold water tank (6). The two water pipes are respectively connected to the first cooling component (2) and the atomizing spray component (4), and the water inlet end of the cold water tank (6) is connected to an external water pipe.

3. The energy-saving oil-immersed power transformer according to claim 1, characterized in that: The connecting pipe (45) is mounted above the oil storage cylinder (31), the other end of the connecting pipe (45) is connected to a hose, the other end of the hose is connected to another water pipe on the cold water tank (6), and a plurality of atomizing heads (46) are mounted on one end of the connecting pipe (45) located directly above the oil storage cylinder (31), and the spraying directions of the plurality of atomizing heads (46) are all toward the surface of the oil storage cylinder (31).

4. The energy-saving oil-immersed power transformer according to claim 1, characterized in that: A second transmission wheel (47) is also mounted on the synchronization rod, and a transmission belt (48) is arranged on the second transmission wheel (47), the other end of the transmission belt (48) is sleeved on the first transmission wheel (32), and the second transmission wheel (47) is connected to the first transmission wheel (32) through the transmission belt (48).

5. The energy-saving oil-immersed power transformer according to claim 1, characterized in that: Two limit bars (15) for limiting the upward and downward sliding range of the partition plate (12) are also installed on the inner walls on both sides of the transformer housing (1). The transformer housing (1) is also provided with a plurality of communication holes (11), and the plurality of communication holes (11) are respectively connected to the first cooling component (2) and the second cooling component (3).

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