Oil filling equipment for vegetable oil transformer

Abstract

The present invention belongs to the technical field of transformer equipment, specifically, an oil filling device for a vegetable oil transformer, including a transformer cylinder and an oil filling component, wherein the transformer cylinder has a metal cylinder shell, the inner wall of the metal cylinder shell is evenly provided with external connection tubes, and the oil filling component includes an isolation disk, the lower surface of the isolation disk can be adapted to be connected with the inner wall of the metal cylinder shell, and the axis of the inner wall of the isolation disk is rotatably connected with an air extraction rotating rod. The device can guide the oil to spray and hit the side wall of the metal cylinder shell under high pressure through a controllable side guide plate at the bottom of the sliding shell, and then the oil flows into the area below the isolation disk along the side wall of the metal cylinder shell, so that the transformer parts inside the metal cylinder shell are immersed in the oil without generating impact bubbles, avoiding the phenomenon of bubbles in the oil layer, and avoiding the increase of oxygen content inside the oil, resulting in the transformer components immersed in the oil still being corroded, affecting the use experience of the transformer.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer equipment, in particular to an oil filling device for a vegetable oil transformer. Background Art

[0002] At the end of the 19th century, transformers began to use transformer oil as an insulating and cooling medium, and oil-immersed transformers appeared. In addition to its abundant natural storage and low price, transformer oil has good insulation properties due to the combination of transformer oil and fiber materials, which can reduce the insulation distance and reduce costs; transformer oil has low viscosity and good heat transfer properties, which can well protect the core and windings from the influence of moisture in the air, protect the insulating paper and insulating cardboard from the action of oxygen, reduce the aging of insulating materials, and extend the life of the transformer. Except for some small and medium-capacity transformers and gas transformers for special purposes, the vast majority of large and medium-sized transformers still use transformer oil as a cooling and insulating medium. Transformers immersed in transformer oil have an insulation heat resistance grade of A and a long-term operating temperature of 105°C, so they are widely used.

[0003] Before oil is injected into the transformer body, it is necessary to evacuate the interior of the transformer to remove internal water vapor and impurities, so that the transformer casing is in a vacuum negative pressure state. At this time, the oil injection work can be carried out directly. The negative pressure will accelerate the flow of the oil and then quickly inject it into the shell. At this time, the oil will bring some air into the oil layer, causing bubbles to form in the oil layer, increasing the oxygen content in the oil, and causing the transformer components immersed in the oil to still be corroded, affecting the user experience of the transformer, so improvements are needed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting a technical solution: an oil filling device for a vegetable oil transformer, comprising a transformer cylinder and an oil filling component, wherein the transformer cylinder has a metal cylinder shell, and the inner wall of the metal cylinder shell is evenly provided with external connection pipes;

[0005] The oil injection component includes an isolation plate, and the lower surface of the isolation plate can be adapted to be connected with the inner wall of the metal cylinder shell. Figure 2 As shown, a vacuum rotary rod is rotatably connected to the axis of the inner wall of the isolation cake plate, a vacuum rotary pump is fixedly connected to the top of the vacuum rotary rod, and adjustment support rods are evenly arranged on the outer surface of the vacuum rotary pump. An air intake device is arranged at the axis of the top of the inner wall of the isolation cake plate, and drainage devices are evenly arranged on the inner wall of the isolation cake plate through the through-holes. The vacuum rotary pump can extract the air inside the metal cylinder shell by rotating the vacuum rotary rod in the opposite direction, so that the inside of the metal cylinder shell forms a state close to vacuum, and then vegetable oil is added to the parts inside the metal cylinder shell through the drainage device.

[0006] The drainage device comprises a guide shell, a leakage prevention device is arranged in the middle of the inner wall of the guide shell, the bottom end of the leakage prevention device is fixedly connected with a sliding shell, the end of the inner wall of the sliding shell away from the leakage prevention device is provided with a pressure sensing device, the bottom of the inner cavity of the sliding shell is rotatably connected with a torque rod through a groove, the outer surface of the torque rod is fixedly connected with a side guide plate, when the side guide plate is in a parallel state, the groove for oil discharge at the bottom of the sliding shell will be blocked, thereby making it difficult for the oil to be discharged through the sliding shell, but when the side guide plate When rotating obliquely downward, not only can the drainage groove at the bottom of the sliding shell be opened, but also the oil can be guided in the direction of fitting the inner wall of the metal cylinder shell, so that the oil can flow down quickly along the inner wall of the metal cylinder shell. The front and rear ends of the torque rod extend to the outside of the sliding shell, and the front and rear ends of the torque rod are symmetrically provided with control motors, and the outer surface of the output shaft of the control motor is fixedly connected with a pointer rotating sleeve, and the outer surface of the pointer rotating sleeve is rotatably connected to the bottom of the outer surface of the sliding shell through a pressure sensing strip, and the outer surface of the control motor is fixedly connected with a limiting frame at the axis center.

[0007] Furthermore, the pressure-sensing device includes a compression soft shell, a stress-bearing pressure plate is fixedly connected to the left side of the inner wall of the compression soft shell, and signal terminals are fixedly connected to the front and rear ends of the stress-bearing pressure plate, and a concave disk push rod is symmetrically arranged on the right side of the inner cavity of the stress-bearing pressure plate, and the concave disk push rod extends to the outside of the compression soft shell away from the side of the stress-bearing pressure plate. The oil accumulated at the bottom of the sliding shell will be squeezed by the concave disk push rod due to the internal pressure of the metal cylinder shell, and then the internal stress-bearing pressure plate will be squeezed, and the pressure-sensing signal will be sent to the outside through the signal terminals on both sides.

[0008] Furthermore, the outer surface of the compression soft shell is fixedly connected to the bottom end of the inner wall of the sliding shell, the signal terminal is extended to the outside of the sliding shell from one end away from the stressed pressure plate, the right side of the inner cavity of the compression soft shell is fixedly connected to the outer surface of the concave disk push rod, and the right end of the concave disk push rod is slidably connected to the inner cavity of the stressed pressure plate. The outer surface of the side guide plate is slidably connected to the bottom of the inner cavity of the sliding shell through a groove, the end of the limit frame away from the control motor is fixedly connected to the outer surface of the sliding shell, the outer surface of the pressure sensing strip is slidably connected to the outer surface of the sliding shell through a groove, and the top of the output shaft of the control motor is fixedly connected to the end of the torque rotating rod. The number of the drainage devices is six, the top of the outer surface of the guide shell is fixedly connected to the inner cavity of the isolation pan through a through groove, the bottom end of the adjustment support rod is fixedly connected to the upper surface of the isolation pan through an adapter groove, and the top of the adjustment support rod is fixedly connected to the outer surface of the vacuum pump.

[0009] Furthermore, the air intake device includes a filling ring shell, and the left and right sides of the inner wall of the filling ring shell are symmetrically provided with a sliding inner shell through a through groove, and the two sides of the inner wall of the sliding inner shell are symmetrically provided with through slots, but the slots are opened in the middle of the sliding inner shell. When the device is not working, the upper and lower sides of the sliding inner shell protrude from the filling ring shell by the same length, but the slots are shorter and are therefore located inside the filling ring shell, such as Fig. 9 As shown, air pumps are symmetrically arranged at both ends of the inner cavity of the sliding inner shell, built-in strip shells are symmetrically arranged on both sides of the outer surface of the sliding inner shell, and compression cushion cylinders are symmetrically arranged on the upper and lower sides of the inner cavity of the built-in strip shell. The air pump can pressurize the compression cushion cylinder through the hollow built-in strip shell, so that the compression cushion cylinder props up the built-in strip shell, and then the sliding inner shell is stuck in the middle of the filling ring shell.

[0010] Furthermore, both ends of the inner cavity of the built-in bar shell are fixedly connected to the inflation pump through the air delivery port, and both ends of the outer surface of the built-in bar shell are fixedly connected to the outer surface of the sliding inner shell, the upper and lower sides of the outer surface of the sliding inner shell extend to the outside of the filling ring shell through the through grooves, the outer surface of the filling ring shell is fixedly connected to the axis of the top of the inner wall of the isolation cake plate, and the axis of the inner wall of the filling ring shell is rotatably connected to the outer surface of the output shaft of the air pump.

[0011] Furthermore, the leakage prevention device includes an embedded fixed plate, and connecting compression tubes are symmetrically arranged on both sides of the inner cavity of the embedded fixed plate, the bottom of the outer surface of the connecting compression tube is fixedly connected to a control bottom box, the middle of the inner wall of the control bottom box is fixedly connected to a traction motor, the bottom end of the traction motor output shaft is slidably connected to a control pull rod, the bottom end of the control pull rod is fixedly connected to a transfer pull plate, the two ends of the transfer pull plate are symmetrically provided with inner slide cylinders, and the inner cavity of the inner slide cylinder is provided with a nozzle groove for oil.

[0012] Furthermore, the outer surface of the inner slide cylinder is slidably connected to the bottom of the inner wall of the connecting compression tube, the outer surface of the embedded fixed plate is fixedly connected to the middle of the inner wall of the guide shell, the outer surface of the control bottom box is fixedly connected to the top of the inner wall of the sliding shell, and the outer surface of the control pull rod is slidably connected to the axis of the bottom of the inner wall of the control bottom box.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The device can guide the oil to spray and hit the side wall of the metal cylinder shell under high pressure through the controllable side guide plate at the bottom of the sliding shell, and then the oil flows along the side wall of the metal cylinder shell into the area below the isolation plate. Without generating impact bubbles, the transformer components inside the metal cylinder shell are immersed in the oil, avoiding the phenomenon of bubbles in the oil layer, and avoiding the increase of oxygen content in the oil, which causes the transformer components immersed in the oil to still be corroded and affect the use experience of the transformer.

[0015] 2. The deflection angle of the side guide plate of the device can be adjusted. When the drainage work starts, in order to ensure that the oil can fit the side wall of the metal cylinder shell as much as possible, the deflection angle of the side guide plate should be smaller. The deflection angle of the side guide plate can be accurately adjusted through the side pressure sensing strip. After a period of infusion, the liquid level of the oil rises. At this time, directly discharging the oil will not bring oxygen into the lower layer of oil, thereby increasing the deflection angle of the side guide plate, opening the bottom port of the sliding shell, realizing high-speed drainage, and thus improving work efficiency.

[0016] 3. The device is an integrated equipment for vacuuming, pressurizing and oiling. Therefore, when the device is performing oiling, the exhaust position of the axis of the isolation cake plate needs to be blocked through the air intake device at the axis to prevent external air from entering the metal cylinder shell through the grooves on the side of the sliding inner shell, resulting in failure to reduce the pressure inside the metal cylinder shell.

[0017] 4. When the oil directly enters the guide shell, it will quickly impact the bottom of the sliding shell due to the effect of air pressure, so leak-proof equipment is needed to buffer the oil. Through the transfer function of the leak-proof equipment, it is avoided that the oil is directly transferred from the guide shell to the bottom of the sliding shell, causing serious impact force on the bottom of the sliding shell, exceeding the load of the side guide plate and causing the port to be suddenly opened. In addition, the leak-proof equipment can regulate the oil actually entering the sliding shell to ensure that the bottom of the sliding shell can be smoothly filled with oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 is a cross-sectional view of the isolation cake plate of the present invention;

[0021] Figure 4 is a cross-sectional view of the drainage device of the present invention;

[0022] Figure 5 is a rear view of the drainage device of the present invention;

[0023] Figure 6 is a cross-sectional view of the sliding through shell of the present invention;

[0024] Figure 7 is an enlarged view of the drainage device A of the present invention;

[0025] Figure 8 is a cross-sectional view of a pressure-sensing device of the present invention;

[0026] Fig. 9is a cross-sectional view of the air intake device of the present invention;

[0027] Fig.10 It is a cross-sectional view of the leakage prevention device of the present invention.

[0028] In the figure: 1, transformer cylinder; 2, oil filling component; 11, metal cylinder shell; 12, external connection pipe; 21, isolation plate; 22, air extraction rod; 23, air extraction pump; 24, adjustment support rod; 3, air intake device; 4, drainage device; 41, guide shell; 42, sliding shell; 43, torque rod; 44, side guide plate; 45, control motor; 46, limit frame; 47, pointer sleeve; 48, pressure sensing strip; 6. Pressure-sensing device; 61. Compression soft shell; 62. Force-bearing pressure plate; 63. Signal terminal; 64. Concave disk push rod; 31. Filling ring shell; 32. Sliding inner shell; 33. Air pump; 34. Built-in strip shell; 35. Compression cushion cylinder; 5. Leak-proof device; 51. Embedded fixing plate; 52. Connecting compression tube; 53. Control bottom box; 54. Inner sliding cylinder; 55. Adapter pull plate; 56. Traction motor; 57. Control pull rod. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0030] Example 1, please refer to Figure 1-Figure 8 The present invention provides a technical solution: an oil filling device for a vegetable oil transformer, comprising a transformer cylinder 1 and an oil filling component 2, wherein the transformer cylinder 1 has a metal cylinder shell 11, and the inner wall of the metal cylinder shell 11 is evenly provided with external connection pipes 12;

[0031] The oil filling component 2 includes an isolation plate 21, and the lower surface of the isolation plate 21 can be adapted to be connected with the inner wall of the metal cylinder shell 11. Figure 2 As shown, a vacuum rotating rod 22 is rotatably connected to the axis of the inner wall of the isolation cake plate 21, and a vacuum rotary pump 23 is fixedly connected to the top of the vacuum rotating rod 22. The outer surface of the vacuum rotary pump 23 is evenly provided with adjustment support rods 24. An air intake device 3 is provided at the axis of the top of the inner wall of the isolation cake plate 21. The inner wall of the isolation cake plate 21 is evenly provided with drainage devices 4 through the through-holes. The vacuum rotary pump 23 can extract the air inside the metal cylinder shell 11 by rotating the vacuum rotating rod 22 in the opposite direction, so that the inside of the metal cylinder shell 11 forms a state close to vacuum, and then vegetable oil is added to the components inside the metal cylinder shell 11 through the drainage device 4.

[0032] The drainage device 4 includes a guide shell 41, a leak-proof device 5 is arranged in the middle of the inner wall of the guide shell 41, the bottom end of the leak-proof device 5 is fixedly connected to a sliding shell 42, and a pressure-sensing device 6 is arranged at one end of the inner wall of the sliding shell 42 away from the leak-proof device 5. The bottom of the inner cavity of the sliding shell 42 is rotatably connected to a torque rod 43 through a groove, and the outer surface of the torque rod 43 is fixedly connected to a side guide plate 44. When the side guide plate 44 is in a parallel state, the groove for oil discharge at the bottom of the sliding shell 42 will be blocked, which makes it difficult for the oil to be discharged through the sliding shell 42. However, when the side guide plate 44 is inclined, the oil will not be discharged through the sliding shell 42. When rotating downward, not only can the drainage groove at the bottom of the sliding shell 42 be opened, but the oil can also be guided in the direction of the inner wall of the metal cylinder shell 11, so that the oil can flow down quickly along the inner wall of the metal cylinder shell 11. The front and rear ends of the torque rod 43 extend to the outside of the sliding shell 42, and the front and rear ends of the torque rod 43 are symmetrically provided with a control motor 45. The outer surface of the output shaft of the control motor 45 is fixedly connected with a pointer sleeve 47. The outer surface of the pointer sleeve 47 is rotatably connected to the bottom of the outer surface of the sliding shell 42 through a pressure sensing strip 48. The outer surface of the control motor 45 is fixedly connected with a limiting frame 46 at the axis center.

[0033] The pressure-sensing device 6 includes a compression soft shell 61, a stress-bearing pressure plate 62 is fixedly connected to the left side of the inner wall of the compression soft shell 61, and the front and rear ends of the stress-bearing pressure plate 62 are fixedly connected to signal terminals 63, and a concave disk push rod 64 is symmetrically arranged on the right side of the inner cavity of the stress-bearing pressure plate 62, and the concave disk push rod 64 extends to the outside of the compression soft shell 61 away from the side of the stress-bearing pressure plate 62. The oil accumulated at the bottom of the sliding shell 42 will be squeezed by the concave disk push rod 64 due to the internal pressure of the metal cylindrical shell 11, and then the internal stress-bearing pressure plate 62 will be squeezed, and the pressure-sensing signal will be sent to the outside through the signal terminals 63 on both sides.

[0034] The outer surface of the compression soft shell 61 is fixedly connected to the bottom end of the inner wall of the sliding shell 42, the end of the signal terminal 63 away from the stressed pressure plate 62 extends to the outside of the sliding shell 42, the right side of the inner cavity of the compression soft shell 61 is fixedly connected to the outer surface of the concave plate push rod 64, and the right end of the concave plate push rod 64 is slidably connected to the inner cavity of the stressed pressure plate 62. The outer surface of the side guide plate 44 is slidably connected to the bottom of the inner cavity of the sliding shell 42 through a groove, the end of the limit frame 46 away from the control motor 45 is fixedly connected to the outer surface of the sliding shell 42, the outer surface of the pressure sensing strip 48 is slidably connected to the outer surface of the sliding shell 42 through a groove, and the top end of the output shaft of the control motor 45 is fixedly connected to the end of the torque rotating rod 43. There are six drainage devices 4. The top of the outer surface of the guide shell 41 is fixedly connected to the inner cavity of the isolation cake plate 21 through a through groove. The bottom end of the adjustment support rod 24 is fixedly connected to the upper surface of the isolation cake plate 21 through an adapter groove. The top of the adjustment support rod 24 is fixedly connected to the outer surface of the vacuum pump 23.

[0035] When the device is used, the isolation cake plate 21 is placed in the slot of the metal cylinder shell 11, such as Figure 2 As shown, the vacuum pump 23 then evacuates the interior of the metal cylinder shell 11 by twisting the vacuum rod 22, so that the lower layer of the isolation plate 21, that is, the part where the transformer parts are located, is in a state of approximate vacuum. After preparation is completed, vegetable oil is added through the drainage device 4.

[0036] The oil enters the sliding shell 42 through the guide shell 41. After passing through the leak-proof device 5, the oil will enter through the sliding shell 42. At this time, the control motor 45 will twist the side guide plate 44 through the torque rod 43, and rotate the parallel side guide plate 44 to a state oblique to the inner wall of the metal cylinder shell 11. At this time, the notch at the bottom of the sliding shell 42 will be opened, and then under the guidance of the side guide plate 44, the oil will be quickly sprayed into the inner wall of the metal cylinder shell 11 under the action of pressure. Under the drainage action of the inner wall of the metal cylinder shell 11, the oil will gradually fill the space below the isolation cake plate 21. Since the oil does not directly hit the liquid surface at the bottom, the oil will fill the metal cylinder shell 11 more smoothly, thereby eliminating the influence of bubbles.

[0037] When the control motor 45 twists the side guide plate 44, the pointer rotating sleeve 47 sleeved on the outer surface of its output shaft will also deflect along with the side guide plate 44, and then the pointer rotating sleeve 47 will sweep across the pressure sensing strip 48 at the corresponding position, so as to accurately monitor and control the deflection angle and actual position of the side guide plate 44, and then control the size of the slot opened at the bottom of the sliding shell 42, so as to regulate the refueling speed.

[0038] Example 2, please refer to Figure 1-Figure 10The present invention provides a technical solution: on the basis of the first embodiment, the air intake device 3 includes a filling ring shell 31, and the left and right sides of the inner wall of the filling ring shell 31 are symmetrically provided with a sliding inner shell 32 through a through groove, and the two sides of the inner wall of the sliding inner shell 32 are symmetrically provided with through notches, but the notches are opened in the middle of the sliding inner shell 32. When the device is not working, the upper and lower sides of the sliding inner shell 32 protrude from the filling ring shell 31 by the same length, but the notches are shorter and are therefore located inside the filling ring shell 31, such as Fig. 9 As shown, an air pump 33 is symmetrically arranged at both ends of the inner cavity of the sliding inner shell 32, an internal bar shell 34 is symmetrically arranged on both sides of the outer surface of the sliding inner shell 32, and a compression cushion tube 35 is symmetrically arranged on the upper and lower sides of the inner cavity of the internal bar shell 34. The air pump 33 can pressurize the compression cushion tube 35 through the hollow internal bar shell 34, so that the compression cushion tube 35 props up the internal bar shell 34, and then the sliding inner shell 32 is stuck in the middle of the filling ring shell 31.

[0039] Both ends of the inner cavity of the built-in strip shell 34 are fixedly connected to the inflation pump 33 through the air delivery port, and both ends of the outer surface of the built-in strip shell 34 are fixedly connected to the outer surface of the sliding inner shell 32, and the upper and lower sides of the outer surface of the sliding inner shell 32 extend to the outside of the filling ring shell 31 through the through grooves, and the outer surface of the filling ring shell 31 is fixedly connected to the axis of the top of the inner wall of the isolation cake plate 21, and the axis of the inner wall of the filling ring shell 31 is rotatably connected to the outer surface of the output shaft of the air extraction rotary pump 23.

[0040] The anti-leakage device 5 includes an embedded fixed plate 51, and connecting compression tubes 52 are symmetrically arranged on both sides of the inner cavity of the embedded fixed plate 51. The bottom of the outer surface of the connecting compression tube 52 is fixedly connected to a control bottom box 53, and the middle of the inner wall of the control bottom box 53 is fixedly connected to a traction motor 56. The bottom end of the output shaft of the traction motor 56 is slidably connected to a control pull rod 57, and the bottom end of the control pull rod 57 is fixedly connected to a transfer pull plate 55. Inner slide cylinders 54 are symmetrically arranged at both ends of the transfer pull plate 55, and the inner cavity of the inner slide cylinder 54 is provided with a nozzle groove for oil.

[0041] The outer surface of the inner slide cylinder 54 is slidably connected to the bottom of the inner wall of the connecting compression tube 52, the outer surface of the embedded fixed plate 51 is fixedly connected to the middle of the inner wall of the guide shell 41, the outer surface of the control bottom box 53 is fixedly connected to the top of the inner wall of the sliding shell 42, and the outer surface of the control pull rod 57 is slidably connected to the axis of the bottom of the inner wall of the control bottom box 53.

[0042] When the vacuum operation is performed, the air discharged from the vacuum rod 22 from the bottom to the top will pass through the air intake device 3. At this time, the air pressure will push the sliding inner shell 32 upward, and then the air flow will be discharged outward through the air grooves on both sides of the sliding inner shell 32. When the refueling operation is performed, the vacuum rod 22 stops rotating and it is difficult to prevent the external air flow from entering the metal cylinder shell 11. At this time, the air pump 33 will inflate and pressurize the built-in bar shell 34 to inflate and expand the compression cushion tubes 35 on the upper and lower sides of the built-in bar shell 34, and then the symmetrical compression cushion tubes 35 on both sides will erect the built-in bar shell 34 and the sliding inner shell 32 to the center of the filling ring shell 31, thereby preventing the sliding inner shell 32 from sliding due to air pressure and blocking the filling ring shell 31, thereby effectively preventing external gas from entering the metal cylinder shell 11.

[0043] When the oil directly enters the interior of the guide shell 41, it will quickly impact the bottom of the sliding shell 42 due to the effect of air pressure, so the leak-proof device 5 is needed to buffer the oil. When the leak-proof device 5 does not open the inner slide 54, the traction motor 56 squeezes the inner slide 54 into the connecting compression tube 52 through the control pull rod 57 and the adapter pull plate 55, preventing the inner slide 54 from sliding out of the connecting compression tube 52 due to the pressure of the oil, so the oil will be blocked at the position where the leak-proof device 5 is located. When the leak-proof device 5 needs to release the oil, the traction motor 56 slowly slides the inner slide 54 out of the connecting compression tube 52 to release the oil.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An oil filling device for a vegetable oil transformer, comprising a transformer cylinder (1) and an oil filling component (2), wherein the transformer cylinder (1) has a metal cylinder shell (11), and the inner wall of the metal cylinder shell (11) is evenly provided with external connection pipes (12), characterized in that: The oil injection component (2) comprises an isolation disk (21), an air extraction rod (22) is rotatably connected to the axis of the inner wall of the isolation disk (21), an air extraction rotary pump (23) is fixedly connected to the top of the air extraction rotary rod (22), an adjustment support rod (24) is evenly arranged on the outer surface of the air extraction rotary pump (23), an air intake device (3) is arranged at the axis of the top of the inner wall of the isolation disk (21), and a drainage device (4) is evenly arranged on the inner wall of the isolation disk (21) through a through hole; The drainage device (4) comprises a guide housing (41), a leakage prevention device (5) is arranged in the middle of the inner wall of the guide housing (41), a sliding housing (42) is fixedly connected to the bottom end of the leakage prevention device (5), a pressure sensing device (6) is arranged at one end of the inner wall of the sliding housing (42) away from the leakage prevention device (5), a torque rod (43) is rotatably connected to the bottom of the inner cavity of the sliding housing (42) through a groove, and a side guide plate (4) is fixedly connected to the outer surface of the torque rod (43). 4), the front and rear ends of the torque rod (43) are extended to the outside of the sliding shell (42), and the front and rear ends of the torque rod (43) are symmetrically provided with control motors (45), the outer surface of the output shaft of the control motor (45) is fixedly connected with a pointer rotating sleeve (47), the outer surface of the pointer rotating sleeve (47) is rotatably connected to the bottom of the outer surface of the sliding shell (42) through a pressure sensing strip (48), and the outer surface of the control motor (45) is fixedly connected with a limiting frame (46) at the axis center; The air intake device (3) comprises a filling ring shell (31), a sliding inner shell (32) is symmetrically arranged on the left and right sides of the inner wall of the filling ring shell (31) through a through-cut groove, an air pump (33) is symmetrically arranged at both ends of the inner cavity of the sliding inner shell (32), an internal strip shell (34) is symmetrically arranged on both sides of the outer surface of the sliding inner shell (32), and a compression pad cylinder (35) is symmetrically arranged on the upper and lower sides of the inner cavity of the internal strip shell (34); Both ends of the inner cavity of the built-in strip shell (34) are fixedly connected to the inflation pump (33) through the air delivery port, and both ends of the outer surface of the built-in strip shell (34) are fixedly connected to the outer surface of the sliding inner shell (32), and the upper and lower sides of the outer surface of the sliding inner shell (32) extend to the outside of the filling ring shell (31) through the through-cut grooves, and the outer surface of the filling ring shell (31) is fixedly connected to the axis of the top of the inner wall of the isolation cake plate (21), and the axis of the inner wall of the filling ring shell (31) is rotatably connected to the outer surface of the output shaft of the air extraction rotary pump (23).

2. The oil filling device for a vegetable oil transformer according to claim 1, characterized in that: The pressure sensing device (6) comprises a compression soft shell (61), a pressure plate (62) is fixedly connected to the left side of the inner wall of the compression soft shell (61), the front and rear ends of the pressure plate (62) are fixedly connected to signal terminals (63), a concave disk push rod (64) is symmetrically arranged on the right side of the inner cavity of the pressure plate (62), and the concave disk push rod (64) extends from the side of the pressure plate (62) away from the pressure plate to the outside of the compression soft shell (61).

3. The oil filling device for a vegetable oil transformer according to claim 2, characterized in that: The outer surface of the compression soft shell (61) is fixedly connected to the bottom end of the inner wall of the sliding shell (42), and the signal terminal (63) extends to the outside of the sliding shell (42) at one end away from the force-bearing pressure plate (62). The right side of the inner cavity of the compression soft shell (61) is fixedly connected to the outer surface of the concave disk push rod (64), and the right end of the concave disk push rod (64) is slidably connected to the inner cavity of the force-bearing pressure plate (62).

4. The oil filling device for a vegetable oil transformer according to claim 3, characterized in that: The outer surface of the side guide plate (44) is slidably connected to the bottom of the inner cavity of the sliding shell (42) through a groove, the end of the limit frame (46) away from the control motor (45) is fixedly connected to the outer surface of the sliding shell (42), the outer surface of the pressure sensing strip (48) is slidably connected to the outer surface of the sliding shell (42) through a groove, and the top end of the output shaft of the control motor (45) is fixedly connected to the end of the torque rod (43).

5. The oil filling device for a vegetable oil transformer according to claim 4, characterized in that: The number of the drainage devices (4) is six, the top of the outer surface of the guide shell (41) is fixedly connected to the inner cavity of the isolation plate (21) through a through groove, the bottom end of the adjustment support rod (24) is fixedly connected to the upper surface of the isolation plate (21) through an adapter groove, and the top of the adjustment support rod (24) is fixedly connected to the outer surface of the vacuum pump (23).

6. The oil filling device for a vegetable oil transformer according to claim 1, characterized in that: The anti-leakage device (5) comprises an embedded fixed plate (51), and connecting compression tubes (52) are symmetrically arranged on both sides of the inner cavity of the embedded fixed plate (51), and the bottom of the outer surface of the connecting compression tube (52) is fixedly connected to a control bottom box (53), and the middle of the inner wall of the control bottom box (53) is fixedly connected to a traction motor (56), and the bottom end of the output shaft of the traction motor (56) is slidably connected to a control pull rod (57), and the bottom end of the control pull rod (57) is fixedly connected to a transfer pull plate (55), and the two ends of the transfer pull plate (55) are symmetrically provided with inner slide cylinders (54).

7. The oil filling device for a vegetable oil transformer according to claim 6, characterized in that: The outer surface of the inner slide cylinder (54) is slidably connected to the bottom of the inner wall of the connecting compression tube (52), the outer surface of the embedded fixed plate (51) is fixedly connected to the middle of the inner wall of the guide shell (41), the outer surface of the control bottom box (53) is fixedly connected to the top of the inner wall of the sliding shell (42), and the outer surface of the control pull rod (57) is slidably connected to the axis of the bottom of the inner wall of the control bottom box (53).

Images