A kind of oiling device of distribution transformer

Abstract

The application belongs to the field of distribution transformer maintenance equipment, and specifically discloses an oiling device for a distribution transformer, which comprises a rack, an oil tank, an oil pump, an oil conveying pipe and an oil nozzle, the rack comprises a base and a support, the support is fixed on the base, the oil tank and the oil pump are fixed on the base, the oil pump is communicated with the oil outlet of the oil tank, and the oil outlet of the oil pump is communicated with one end of the oil conveying pipe; a lifting and rotating mechanism is installed above the support; a lifting top plate is horizontally fixed on the moving part above the lifting and rotating mechanism, a telescopic arm is horizontally and fixedly connected to the side surface of the lifting top plate, an angle adjusting mechanism and the oil nozzle are installed on the front end of the telescopic arm, the oil nozzle is communicated with the other end of the oil conveying pipe and is installed on the angle adjusting mechanism. The device can effectively adjust the height, horizontal rotating direction, telescopic length and vertical angle of the oil nozzle, enhances the universality and adaptability of the oiling device, and significantly improves the operation and maintenance efficiency of the power equipment.

Description

Technical Field

[0001] This invention belongs to the field of distribution transformer maintenance equipment, and specifically relates to a lubrication device for distribution transformers. Background Technology

[0002] Distribution transformers are core equipment in power systems, responsible for voltage transformation and power distribution. Their operational status directly affects the stability and reliability of power supply. Transformer oil, as a crucial insulating and cooling medium in distribution transformers, experiences oil loss during operation due to factors such as evaporation and leakage. Failure to replenish the oil in a timely manner can lead to problems such as decreased insulation performance and reduced heat dissipation efficiency, and may even cause serious malfunctions such as transformer burnout. Therefore, regular oiling and maintenance of distribution transformers is a vital aspect of ensuring the safe operation of the power system.

[0003] Currently, the main method for lubricating distribution transformers is the traditional manual method of carrying an oil can. This method requires workers to climb to the top of the transformer using climbing equipment, maintaining their balance with one hand while holding an oil can filled with transformer oil in the other, and then aligning the oil can's outlet with the transformer's filling port to add oil. However, this traditional method has several significant drawbacks: Firstly, when working at height on top of the transformer, workers find it difficult to maintain precise balance, and the stability of carrying the oil can is poor, making it prone to tipping over and leaking transformer oil. This not only wastes oil but may also cause equipment insulation failures or safety hazards due to leakage. Secondly, manual oiling is extremely inefficient, with a limited amount of oil added per operation. For batch maintenance of multiple transformers, this method requires a significant amount of manpower and time, failing to meet the needs of efficient operation and maintenance in power systems.

[0004] To address the drawbacks of traditional manual lubrication methods, some simplified lubrication devices for distribution transformers have gradually emerged in the industry. While existing devices attempt to incorporate simple telescopic structures for height adjustment, their limited travel and poor stability during adjustment prevent continuous and precise height control. Angle adjustment generally lacks dedicated mechanisms, relying solely on manual manipulation of the guide tube or lubrication nozzle by workers, resulting in low accuracy and laborious operation. These shortcomings lead to extremely poor versatility and adaptability of existing lubrication devices, making it difficult to meet the lubrication and maintenance needs of distribution transformers in various scenarios and hindering their widespread application in the power operation and maintenance field. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention aims to provide a refueling device for distribution transformers. This device can effectively adjust the height, horizontal rotation direction, extension length, and vertical angle of the refueling nozzle, enhancing the versatility and adaptability of the refueling device and significantly improving the operation and maintenance efficiency of power equipment.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A refueling device for a distribution transformer includes a frame, an oil tank, an oil pump, an oil delivery pipe, and a refueling nozzle. The frame includes a base and a support, with the support fixed to the base. The oil tank and oil pump are fixed to the base. The oil pump is connected to the oil outlet of the oil tank, and the oil outlet of the oil pump is connected to one end of the oil delivery pipe. A lifting and rotating mechanism is installed above the support, which is used for height lifting and horizontal rotation. A lifting top plate is horizontally fixed to the moving part above the lifting and rotating mechanism. A telescopic arm is horizontally fixed to the side of the lifting top plate. An angle adjustment mechanism and the refueling nozzle are installed at the front end of the telescopic arm. The refueling nozzle is connected to the other end of the oil delivery pipe and is installed on the angle adjustment mechanism.

[0007] Preferably, the lifting and rotating mechanism includes a square tube, a first telescopic rod, and a rotating plate. A support frame is vertically fixed to the top of the bracket. The square tube is vertically slidably fitted in the support frame. The upper end of the square tube passes through the support frame and is rotatably connected to the bottom of the lifting top plate. The lower end of the square tube is connected to the lifting assembly on the bracket. The middle part of the rotating plate is horizontally rotatably connected to the bottom of the support frame. The first telescopic rod is vertically fixed to both sides of the rotating plate. The upper part of the first telescopic rod is fixed to the bottom of the lifting top plate. A rotating drive assembly connected to the rotating plate is provided on the bracket.

[0008] Preferably, the lifting assembly includes a screw, a rotating rod, and a motor. The upper part of the screw is coaxially threaded into the square tube. The screw extends downward through a vertical hole on the upright and the support. The middle part of the screw is rotatably connected to the support. The lower end of the screw is coaxially fixed to a first bevel gear. The rotating rod is horizontally rotatably mounted on the side of the support. One end of the rotating rod is coaxially fixed to a second bevel gear, which meshes perpendicularly with the first bevel gear. The other end of the rotating rod is coaxially fixed to the motor output shaft on the support.

[0009] Preferably, the rotary drive assembly includes a connecting rod and a first power push rod. The first power push rod is horizontally mounted above the bracket perpendicular to the rotary plate. The piston rod of the first power push rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the end of the rotary plate.

[0010] Preferably, the telescopic boom includes a second telescopic rod and a second power push rod. The second telescopic rod is horizontally fixed to the side end of the lifting top plate, and the oil nozzle and angle adjustment mechanism are installed on the telescopic part of the second telescopic rod. The second power push rod is horizontally installed on the lifting top plate, and the piston rod of the second power push rod is connected to the telescopic part of the second telescopic rod.

[0011] Preferably, the angle adjustment mechanism includes a third power push rod, the upper end of the filler nozzle is vertically rotatably connected to the end of the telescopic part of the second telescopic rod, the middle part of the filler nozzle is rotatably connected to the piston rod of the third power push rod, and the tail of the third power push rod is rotatably connected to the lower part of the telescopic part of the second telescopic rod.

[0012] Preferably, a winder is installed on the support, and the oil pipe is wound around the winder.

[0013] Preferably, the first telescopic rod includes a first sleeve and a first sliding rod, the first sliding rod is slidably sleeved in the first sleeve, the first sleeve is fixed on the rotating plate, and the end of the first sliding rod is fixed to the bottom of the lifting top plate.

[0014] Preferably, the second telescopic rod includes a second sleeve and a second slide rod. The end of the second slide rod is horizontally fixed to the side end of the lifting top plate. The second sleeve is slidably sleeved on the second slide rod. The angle adjustment mechanism and the oil nozzle are installed on the second sleeve.

[0015] Preferably, a limiting plate is fixed at the lower end of the square tube.

[0016] The beneficial effects of this invention are as follows: 1. When the motor drives the rotating rod and the second bevel gear to rotate, it can transmit power to the screw through the first bevel gear, thereby driving the screw to rotate forward / reverse, causing the square tube sleeved on the screw to move up and down, and thus driving the lifting top plate and the oiling nozzle to adjust their height. During the height adjustment of the lifting top plate, the first telescopic rods on both sides can adaptively extend and retract. When the first power push rod extends and retracts, it can drive the rotating plate to rotate horizontally around the central rotating connection point through the connecting rod. Since the lifting top plate is rotatably connected to the top of the square tube, it can drive the lifting top plate to rotate and swing horizontally through the first telescopic rods on both sides, thereby effectively adjusting the horizontal angle of the oiling nozzle, so that this device can be adapted to the oiling of different types of transformers.

[0017] 2. This application utilizes a second power push rod to drive a second telescopic rod to extend and retract, thereby effectively adjusting the horizontal extension distance of the oiling nozzle. Furthermore, the extension and retraction of the third power push rod allows the oiling nozzle to rotate vertically around the upper hinge point, effectively adjusting the angle of the oiling nozzle. This enables the device to adapt to the oiling of transformers under different operating conditions, enhancing the versatility and adaptability of the oiling device and significantly improving the operation and maintenance efficiency of power equipment.

[0018] 3. When the oil nozzle in this application stretches the oil delivery pipe, the rewinder can automatically release the pipe. After the oil nozzle completes its operation and resets, the rewinder can automatically rewind the released oil delivery pipe to avoid pipe entanglement affecting the refueling operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the rotary drive assembly of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] like Figure 1-3 As shown, this invention proposes a refueling device for a distribution transformer, including a frame, an oil tank 21, an oil pump 22, an oil delivery pipe 24, and a refueling nozzle 25. The frame includes a base 11 and a support 12, with the support 12 fixed on the base 11. The oil tank 21 and the oil pump 22 are fixed on the base 11. The oil pump 22 is connected to the oil outlet of the oil tank 21, and the oil outlet of the oil pump 22 is connected to one end of the oil delivery pipe 24 (which uses a flexible hose structure). A winder 23 is installed on the support 12, and the oil delivery pipe 24 is wound around the winder 23. The winder 23 uses a commonly used automatic pipe winding reel, a technique familiar to those skilled in the art, and its principle will not be elaborated further. When the upper refueling nozzle 25 extends the oil delivery pipe 24, the winder 23 automatically releases the pipe. After the refueling nozzle 25 completes its operation and resets, the winder 23 automatically winds up the released oil delivery pipe 24, preventing pipe entanglement from affecting the refueling operation.

[0022] A lifting and rotating mechanism is installed above the support frame 12. This mechanism is used for height lifting and horizontal rotation. The lifting top plate 5 is horizontally fixed to the moving part above the lifting and rotating mechanism. In this embodiment, the lifting and rotating mechanism includes a square tube 31, a first telescopic rod 42, and a rotating plate 41. A support frame 13 is vertically fixed to the top of the support frame 12. The square tube 31 is vertically slidably fitted in the support frame 13. The upper end of the square tube 31 passes through the support frame 13 and is rotatably connected to the bottom of the lifting top plate 5. A limiting plate 311 is fixed to the lower end of the square tube 31. A square hole is opened on the support frame 13 to cooperate with the square tube 31, thereby limiting the sliding of the square tube 31 and allowing it to slide vertically on the support frame 13. The limiting plate 311 at the bottom can limit the lifting height of the square tube 31, preventing the square tube 31 from detaching from the support frame 13.

[0023] The lower end of the square tube 31 is connected to the lifting assembly on the bracket 12. Specifically, the lifting assembly includes a screw 33, a rotating rod 34, and a motor 35. The upper part of the screw 33 is coaxially threaded into the square tube 31. The screw 33 extends downward through the vertical holes on the upright frame 13 and the bracket 12. The middle part of the screw 33 is rotatably connected to the bracket 12. The lower end of the screw 33 is coaxially fixed to a first bevel gear 331. The rotating rod 34 is horizontally rotatably mounted on the side of the bracket 12. One end of the rotating rod 34 is coaxially fixed to a second bevel gear 341, which meshes perpendicularly with the first bevel gear 331. The other end of the rotating rod 34 is coaxially fixed to the output shaft of the motor 35 on the bracket 12. The middle part of the rotating plate 41 is horizontally rotatably connected to the lower part of the upright frame 13. The two sides of the rotating plate 41 are vertically fixed to first telescopic rods 42. The upper part of the first telescopic rods 42 is fixed to the bottom of the lifting top plate 5. The bracket 12 is equipped with a rotation drive assembly connected to the rotating plate 41. Figure 1 The structure of the rotation drive component is not shown in the figure; its specific structure is as follows: Figure 2 (As shown). The rotary drive assembly includes a connecting rod 44 and a first power push rod 43. The first power push rod 43 is horizontally mounted above the bracket 12, perpendicular to the rotating plate 41. The piston rod of the first power push rod 43 is rotatably connected to one end of the connecting rod 44, and the other end of the connecting rod 44 is rotatably connected to the end of the rotating plate 41. The first telescopic rod 42 includes a first sleeve 421 and a first sliding rod 422. The first sliding rod 422 is slidably sleeved in the first sleeve 421, which is fixed to the rotating plate 41. The end of the first sliding rod 422 is fixed to the bottom of the lifting top plate 5. The first power push rod 43 can be a hydraulic cylinder structure.

[0024] When the motor 35 drives the rotating rod 34 and the second bevel gear 341 to rotate, it can transmit power to the screw 33 through the first bevel gear 331, thereby driving the screw 33 to rotate forward / reverse, causing the square tube 31 sleeved on the screw 33 to move up and down, thereby driving the lifting top plate 5 and the oil nozzle 25 to adjust their height. During the height adjustment of the lifting top plate 5, the first telescopic rods 42 on both sides can adaptively extend and retract. When the first power push rod 43 extends and retracts, it can drive the rotating plate 41 to rotate horizontally around the central rotating connection point through the connecting rod 44. Since the lifting top plate 5 is rotatably connected to the top of the square tube 31, it can be driven to rotate and swing horizontally through the first telescopic rods 42 on both sides, thereby effectively adjusting the horizontal angle of the oil nozzle 25, so that this device can be adapted to the oiling of different types of transformers.

[0025] A telescopic arm is horizontally fixed to the side of the lifting roof plate 5. An angle adjustment mechanism and a filler nozzle 25 are installed at the front end of the telescopic arm. The filler nozzle 25 is connected to the other end of the oil supply pipe 24 and is mounted on the angle adjustment mechanism. Specifically, the telescopic arm includes a second telescopic rod 61 and a second power push rod 62. The second telescopic rod 61 is horizontally fixed to the side end of the lifting roof plate 5. The filler nozzle 25 and the angle adjustment mechanism are mounted on the telescopic part of the second telescopic rod 61. The second power push rod 62 is horizontally mounted on the lifting roof plate 5, and its piston rod is connected to the telescopic part of the second telescopic rod 61. The second telescopic rod 61 includes a second sleeve 611 and a second sliding rod 612. The end of the second sliding rod 612 is horizontally fixed to the side end of the lifting roof plate 5. The second sleeve 611 is slidably sleeved on the second sliding rod 612. The angle adjustment mechanism and the filler nozzle 25 are mounted on the second sleeve 611. The angle adjustment mechanism includes a third power push rod 7. The upper end of the filler nozzle 25 is vertically rotatably connected to the end of the telescopic part of the second telescopic rod 61. The middle part of the filler nozzle 25 is rotatably connected to the piston rod of the third power push rod 7. The tail end of the third power push rod 7 is rotatably connected to the lower part of the telescopic part of the second telescopic rod 61. In this embodiment, both the second power push rod 62 and the third power push rod 7 adopt a hydraulic cylinder structure.

[0026] This application utilizes the second power push rod 62 to drive the second telescopic rod 61 to extend and retract, thereby effectively adjusting the horizontal extension distance of the oil filling nozzle 25. Furthermore, the extension and retraction of the third power push rod 7 allows the oil filling nozzle 25 to rotate vertically with its upper hinge as the center, effectively adjusting the angle of the oil filling nozzle 25. This enables the device to adapt to the oiling of transformers under different operating conditions, enhancing the versatility and adaptability of the oiling device and significantly improving the operation and maintenance efficiency of power equipment.

[0027] When using this invention, the height and horizontal angle of the filler nozzle 25 can be effectively adjusted by the lifting and rotating mechanism. The extension and retraction of the second power push rod 62 can effectively adjust the horizontal extension distance of the filler nozzle 25. The extension and retraction of the third power push rod 7 allows the filler nozzle 25 to rotate vertically around its upper hinge point, thereby effectively adjusting the angle of the filler nozzle 25. Furthermore, the oil pump 22 pumps oil from the oil tank 21 to the filler nozzle 25 through the oil pipe 24. This allows the device to adapt to different operating conditions for transformer refueling, enhancing the versatility and adaptability of the refueling device and significantly improving the operation and maintenance efficiency of power equipment.

[0028] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A lubrication device for a distribution transformer, comprising a frame, an oil tank, an oil pump, an oil delivery pipe, and a lubrication nozzle, characterized in that: The frame includes a base and a support, with the support fixed on the base. The oil tank and oil pump are fixed on the base, and the oil pump is connected to the oil outlet of the oil tank. The oil outlet of the oil pump is connected to one end of the oil delivery pipe. A lifting and rotating mechanism is installed above the support, which is used for height lifting and horizontal rotation. A lifting top plate is horizontally fixed on the moving part above the lifting and rotating mechanism. A telescopic arm is horizontally fixed to the side of the lifting top plate. An angle adjustment mechanism and the oil filler are installed at the front end of the telescopic arm. The oil filler is connected to the other end of the oil delivery pipe and is installed on the angle adjustment mechanism.

2. The lubrication device for a distribution transformer according to claim 1, characterized in that: The lifting and rotating mechanism includes a square tube, a first telescopic rod, and a rotating plate. A support frame is vertically fixed to the top of the bracket. The square tube is vertically slidably fitted in the support frame. The upper end of the square tube passes through the support frame and is rotatably connected to the bottom of the lifting top plate. The lower end of the square tube is connected to the lifting assembly on the bracket. The middle part of the rotating plate is horizontally rotatably connected to the bottom of the support frame. The first telescopic rod is vertically fixed to both sides of the rotating plate. The upper part of the first telescopic rod is fixed to the bottom of the lifting top plate. A rotating drive assembly connected to the rotating plate is provided on the bracket.

3. The lubrication device for a distribution transformer according to claim 2, characterized in that: The lifting assembly includes a screw, a rotating rod, and a motor. The upper part of the screw is coaxially threaded into the square tube. The screw extends downward through a vertical hole on the upright and support frame. The middle part of the screw is rotatably connected to the support frame. The lower end of the screw is coaxially fixed to a first bevel gear. The rotating rod is horizontally rotatably mounted on the side of the support frame. One end of the rotating rod is coaxially fixed to a second bevel gear, which meshes perpendicularly with the first bevel gear. The other end of the rotating rod is coaxially fixed to the motor output shaft on the support frame.

4. The lubrication device for a distribution transformer according to claim 2, characterized in that: The rotary drive assembly includes a connecting rod and a first power push rod. The first power push rod is horizontally mounted above the bracket perpendicular to the rotating plate. The piston rod of the first power push rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the end of the rotating plate.

5. The lubrication device for a distribution transformer according to claim 1, characterized in that: The telescopic arm includes a second telescopic rod and a second power push rod. The second telescopic rod is horizontally fixed to the side end of the lifting top plate, and the oil nozzle and angle adjustment mechanism are installed on the telescopic part of the second telescopic rod. The second power push rod is horizontally installed on the lifting top plate, and the piston rod of the second power push rod is connected to the telescopic part of the second telescopic rod.

6. The lubrication device for a distribution transformer according to claim 5, characterized in that: The angle adjustment mechanism includes a third power push rod, with the upper end of the filler nozzle vertically rotatably connected to the end of the telescopic part of the second telescopic rod, the middle part of the filler nozzle rotatably connected to the piston rod of the third power push rod, and the tail of the third power push rod rotatably connected to the lower part of the telescopic part of the second telescopic rod.

7. The lubrication device for a distribution transformer according to claim 1, characterized in that: A winder is installed on the support, and the oil pipe is wound around the winder.

8. The lubrication device for a distribution transformer according to claim 2, characterized in that: The first telescopic rod includes a first sleeve and a first sliding rod. The first sliding rod is slidably sleeved in the first sleeve. The first sleeve is fixed to the rotating plate, and the end of the first sliding rod is fixed to the bottom of the lifting top plate.

9. The lubrication device for a distribution transformer according to claim 5, characterized in that: The second telescopic rod includes a second sleeve and a second slide rod. The end of the second slide rod is horizontally fixed to the side of the lifting top plate. The second sleeve is slidably sleeved on the second slide rod. The angle adjustment mechanism and the oil nozzle are installed on the second sleeve.

10. The lubrication device for a distribution transformer according to claim 2, characterized in that: A limiting plate is fixed at the lower end of the square tube.

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