Monitoring device for oil-immersed power transformer

Abstract

The invention relates to the technical field of transformer monitoring, and discloses an oil-immersed power transformer monitoring device which comprises a supporting bottom frame, one side of the supporting bottom frame is fixedly connected with a first supporting plate, the top of the first supporting plate is fixedly connected with a monitoring box, and the monitoring box is internally provided with two sets of anti-vibration assemblies. The two sets of symmetrically arranged second supporting plates serve as initial force bearing units to transmit loads to the monitoring box, the structure arranged at the top of the second supporting plates forms multi-degree-of-freedom buffering, and through linkage cooperation of multi-stage hinge structures, the self-resetting characteristic of friction damping and gravitational torque between the rotating shafts is utilized, so that the self-resetting performance of the rotating shafts is improved. Multi-dimensional vibration is decomposed into harmless micro-amplitude swing step by step, finally, stable posture keeping of the monitoring meter body in a complex vibration environment is achieved, and a dynamic balance biomechanical mechanism is achieved through multi-joint flexible connection in the working process. And vibration interference of different frequencies and directions is effectively isolated through self-adaptive deformation of a mechanical structure.

Description

Technical Field

[0001] This application relates to the field of transformer monitoring technology, and in particular to a monitoring device for an oil-immersed power transformer. Background Technology

[0002] Oil-immersed transformers immerse their coils and cores in specialized transformer oil. This provides several advantages: it dissipates heat, isolates the coils from air to prevent corrosion of the core by moisture, and also helps extinguish arcs. Therefore, early power transformers and switches in my country were oil-immersed. Dry-type transformers, on the other hand, have their cores and coils as a single, fixed unit. They can be directly exposed to air or placed indoors, but require strict temperature and humidity control. Their advantage is that they can be unattended, requiring only periodic inspections. Oil-immersed transformers, however, require human supervision because excessively high oil temperatures can cause explosions. Monitoring devices for oil-immersed power transformers monitor the amount of oil flowing through them.

[0003] However, during the operation of existing transformers, when alternating current passes through the transformer windings, the alternating magnetic field acts on the core material. Due to the magnetostrictive properties of its crystal structure, the core volume undergoes periodic minute deformation. This periodic deformation directly induces regular vibrations in the core. When the transformer body vibrates, it is transmitted to the sensor bracket through the base, causing the accelerometer to falsely trigger, thus triggering a threshold alarm. Frequent alarm triggering may interfere with maintenance personnel's judgment of the actual operating conditions. Furthermore, if a serious vibration or mechanical failure actually occurs, due to too many false alarms, staff may ignore important warnings and delay the opportunity to handle the situation. Summary of the Invention

[0004] This application proposes an oil-immersed power transformer monitoring device with vibration isolation advantages, which solves the problem that vibration may cause frequent alarm triggering in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an oil-immersed power transformer monitoring device, including a support base frame, a first support plate fixedly connected to one side of the support base frame, a monitoring box fixedly connected to the top of the first support plate, and two sets of shock-absorbing components installed inside the monitoring box; The monitoring box contains a monitoring meter body, and the monitoring meter body contains monitoring components. A thin steel sheet is provided on the inner side of the main body of the monitoring meter, and an alarm component is provided on one side of the thin steel sheet; The main body of the monitoring meter is provided with an outer shell, and a buffer component is provided inside the outer shell.

[0006] Preferably, an oil-immersed transformer body is fixedly connected to the top of the support frame, and multiple sets of high-voltage outlets are fixedly connected to one side of the top of the oil-immersed transformer body. Multiple sets of low-side interfaces are fixedly connected to one side of the high-voltage outlets. The low-side interfaces are fixedly connected to the oil-immersed transformer body. A dividing switch is fixedly connected to the centerline of the top of the oil-immersed transformer body, and an oil level indicator fixedly connected to the support frame is provided on one side of the dividing switch.

[0007] Preferably, the shock absorption assembly includes two sets of second support plates. The second support plates are fixedly connected to the monitoring box. A positioning column is fixedly connected to the top of the second support plate. A transverse shaft is movably sleeved on the top of the positioning column. A first connecting plate is fixedly connected to the outside of the transverse shaft. A pitch shaft is fixedly connected to one side of the first connecting plate. A second connecting plate is fixedly connected to one side of the pitch shaft. A roll shaft is fixedly connected to one side of the second connecting plate. The roll shaft is fixedly connected to one side of the main body of the monitoring meter.

[0008] Preferably, the monitoring component includes a capillary tube, which is fixedly connected to the top of the monitoring meter body. A spring tube is fixedly connected to the bottom of the capillary tube. A first top plate is fixedly connected to one side of the spring tube. A connecting rod is fixedly connected to the middle of the first top plate. A threaded block is threadedly connected to the outer side of the connecting rod. A pointer is fixedly connected to the outer side of the threaded block.

[0009] Preferably, the alarm component includes two sets of U-shaped connecting plates, the thin steel sheet is fixedly connected to the pointer, the two sets of U-shaped connecting plates are respectively fixedly connected to both sides of the thin steel sheet, a snap-fit ​​plate is fixedly connected to one side of the U-shaped connecting plate, a mercury switch is snapped into the inside of the snap-fit ​​plate, and a connecting wire is fixedly connected to one side of the mercury switch.

[0010] Preferably, one set of the connecting wires serves as an alarm, and the other set serves as a tripping device. The transformer is protected by the cooperation of the two sets of connecting wires. The other end of the connecting wires is connected to the alarm and tripping device.

[0011] Preferably, the buffer assembly includes a cover plate, which is fixedly connected to one side of the housing, and the housing is fixedly connected to the main body of the monitoring meter.

[0012] Preferably, the buffer assembly further includes multiple sets of triangular connecting blocks, all of which are fixedly connected to the inside of the outer shell. A first connecting post is fixedly connected to one side of each triangular connecting block, a second connecting post is fixedly connected to the bottom of the first connecting post, a second top plate is fixedly connected to the bottom of the second connecting post, one end of a first spring is fixedly connected to one side of the second top plate, and a third top plate is fixedly connected to the other end of the first spring. The third top plate is fixedly connected to the main body of the monitoring meter.

[0013] Preferably, the inner diameter of the cover plate is smaller than the diameter of the main body of the monitoring meter, and the inner side of the cover plate does not abut against the outer surface of the main body of the monitoring meter.

[0014] Preferably, the capillary is filled with gas and extends into the interior of the oil-immersed transformer body to sense changes in voltage and current in the transformer through an induction connector.

[0015] The beneficial effects of this invention are as follows: This invention utilizes two symmetrically arranged second support plates with positioning columns at their tops, forming a first degree of freedom buffer via a movably connected transverse axis. This allows the monitoring meter to perform small-amplitude horizontal rotations around the transverse axis to dissipate kinetic energy in the horizontal plane. A first connecting plate fixed to the outside of the transverse axis forms a second degree of freedom hinge with the second connecting plate via a pitch axis, allowing the monitoring meter to perform pitch movements in the vertical plane to mitigate longitudinal impact forces. The laterally extending roll axis of the second connecting plate provides a third degree of freedom rotational compensation. Through the coordinated operation of the multi-level hinge structure, and utilizing the frictional damping and automatic reset characteristics of the gravitational torque between each rotating axis, multi-dimensional vibrations are progressively decomposed into harmless micro-amplitude oscillations. Ultimately, this achieves stable posture maintenance of the monitoring meter body in complex vibration environments. During operation, it achieves dynamic balance through a biomechanical mechanism via multi-joint flexible connections, and effectively isolates vibration interference of different frequencies and directions through the adaptive deformation of the mechanical structure.

[0016] This invention utilizes the rigid distribution of the outer shell's geometric structure to first absorb and disperse mechanical stress from all directions. Subsequently, multiple sets of triangular connecting blocks inside the shell decompose the concentrated load into multi-directional forces through the mechanical stability of the triangular structure. The impact velocity is gradually reduced through a stepped transmission path formed by the first and second connecting columns. At this time, the second top plate compresses the first spring connected to it under the force, using the elastic deformation characteristics of the spring to convert kinetic energy into elastic potential energy for energy storage and buffering. After the impact energy is exhausted, the spring releases deformation potential energy to push the second top plate to reset, causing the entire connecting mechanism to return to its initial state. During this process, the cover plate acts as an auxiliary fixing surface to maintain the stability of the overall structure of the outer shell. Together, they form a three-level protection system consisting of rigid support, flexible buffering, and dynamic reset, achieving comprehensive seismic protection for the main body of the monitoring meter.

[0017] When the internal load of an oil-immersed transformer is too high, the current inside the transformer becomes excessive. This increases the heat generated by the temperature sensing coil inside the transformer. The heated gas inside the capillary tube collides, increasing the internal pressure of the closed system. This increased pressure is transmitted through the capillary tube to the Bourdon tube. Under this high internal pressure, the Bourdon tube tends to become round, causing it to straighten. This deformation results in a linear displacement at the free end of the Bourdon tube. This displacement pushes the connecting rod, which in turn rotates the threaded block. Conversely, when the internal temperature decreases, the gas inside the tube contracts, causing the Bourdon tube to contract as well, and the pointer returns to its original position. Thus, the dial of the monitoring instrument effectively reflects changes in the transformer's internal current load, enabling transformer monitoring. During monitoring, the purely physical chain reaction between current, heat, and air pressure avoids signal transmission delays or electromagnetic interference, ensuring that the monitoring results are highly synchronized with the actual load state. Furthermore, its fully mechanical passive operating mode eliminates the risk of explosion caused by electrical components. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the supporting base frame of the present invention; Figure 3 This is a schematic diagram of the internal structure of the monitoring box of the present invention; Figure 4 This is a schematic diagram of the monitoring component structure of the present invention; Figure 5 This is a schematic diagram of the structure of the snap-fit ​​plate of the present invention; Figure 6 This is a schematic diagram of the buffer component structure of the present invention. Figure 7 This is a schematic diagram of the structure of the first connecting column of the present invention.

[0020] The components include: 1. Support frame; 2. Oil-immersed transformer body; 3. High-voltage outlet; 4. Low-side interface; 5. Boundary switch; 6. Oil level indicator; 7. First support plate; 8. Monitoring box; 10. Monitoring meter body; 11. Second support plate; 12. Positioning column; 13. First connecting plate; 14. Pitch axis; 15. Second connecting plate; 16. Roll axis; 17. Capillary tube; 18. Bourdon tube; 19. First top plate; 20. Connecting rod; 21. Threaded block; 22. Pointer; 23. Thin steel sheet; 24. U-shaped connecting plate; 25. Snap-fit ​​plate; 26. Mercury switch; 27. Connecting wire; 28. Outer shell; 29. ​​Cover plate; 30. Triangular connecting block; 31. First connecting column; 32. Second connecting column; 33. Second top plate; 34. First spring; 35. Third top plate; 36. Horizontal axis. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Please see Figure 1-7 This invention provides an oil-immersed power transformer monitoring device, including a support base 1, a first support plate 7 fixedly connected to one side of the support base 1, a monitoring box 8 fixedly connected to the top of the first support plate 7, and two sets of shock-absorbing components installed inside the monitoring box 8. The monitoring box 8 contains a monitoring meter body 10, and the monitoring meter body 10 contains monitoring components. A thin steel sheet 23 is provided on the inner side of the main body 10 of the monitoring meter, and an alarm component is provided on one side of the thin steel sheet 23; The main body 10 of the monitoring meter is provided with an outer shell 28, and a buffer component is provided inside the outer shell 28.

[0023] Among them, the top of the support base 1 is fixedly connected to the oil-immersed transformer body 2, and multiple sets of high-voltage contacts 3 are fixedly connected to one side of the top of the oil-immersed transformer body 2. Multiple sets of low-side interfaces 4 are fixedly connected to one side of the high-voltage contacts 3. The low-side interfaces 4 are fixedly connected to the oil-immersed transformer body 2. A dividing switch 5 is fixedly connected to the center line of the top of the oil-immersed transformer body 2. An oil level indicator 6 is fixedly connected to the support base 1 on one side of the dividing switch 5.

[0024] The shock absorption assembly includes two sets of second support plates 11. The second support plates 11 are fixedly connected to the monitoring box 8. A positioning column 12 is fixedly connected to the top of the second support plate 11. A transverse shaft 36 is movably sleeved on the top of the positioning column 12. A first connecting plate 13 is fixedly connected to the outside of the transverse shaft 36. A pitch shaft 14 is fixedly connected to one side of the first connecting plate 13. A second connecting plate 15 is fixedly connected to one side of the pitch shaft 14. A roll shaft 16 is fixedly connected to one side of the second connecting plate 15. The roll shaft 16 is fixedly connected to one side of the monitoring meter body 10. The positioning columns 12 on the top of the two symmetrically arranged second support plates 11 form a first degree of freedom buffer through the movable transverse axis 36, allowing the monitoring meter to swing slightly horizontally around the transverse axis 36 to dissipate kinetic energy in the horizontal plane. The first connecting plate 13 fixed to the outside of the transverse axis 36 forms a second degree of freedom hinge with the second connecting plate 15 through the pitch axis 14, allowing the monitoring meter to pitch in the vertical plane to dissipate longitudinal impact. The roll axis 16 extending laterally from the second connecting plate 15 provides a third degree of freedom rotational compensation. Through the linkage of the multi-level hinge structure, the frictional damping and automatic reset characteristics of the gravitational torque between each rotating axis are used to decompose multi-dimensional vibrations into harmless micro-oscillations, ultimately achieving stable posture maintenance of the monitoring meter body 10 in complex vibration environments. During operation, it achieves dynamic balance through a biomechanical mechanism of multi-joint flexible connection, and effectively isolates vibration interference of different frequencies and directions through the adaptive deformation of the mechanical structure.

[0025] The monitoring component includes a capillary tube 17, which is fixedly connected to the top of the monitoring meter body 10. A spring tube 18 is fixedly connected to the bottom of the capillary tube 17. A first top plate 19 is fixedly connected to one side of the spring tube 18. A connecting rod 20 is fixedly connected to the middle of the first top plate 19. A threaded block 21 is threadedly connected to the outer side of the connecting rod 20. A pointer 22 is fixedly connected to the outer side of the threaded block 21. When the load inside the oil-immersed transformer body 2 is too high, the current inside the oil-immersed transformer body 2 becomes too large. This increases the heat generated by the temperature sensing coil inside the oil-immersed transformer body 2. The heated gas inside the capillary tube 17 undergoes collisions, causing an increase in internal pressure within the closed system. This increased pressure is transmitted through the capillary tube 17 to the spring tube 18. Under the high internal pressure, the spring tube 18 tends to become round, causing a straightening tendency. This deformation results in a linear displacement at the free end of the spring tube 18. After this displacement, the spring tube 18 pushes the connecting rod 20 to move. The screw block 21 rotates, and when the internal temperature drops, the gas inside the tube contracts, and the spring tube 18 also contracts, so the pointer 22 returns to its original position. In this way, the dial of the main body 10 of the monitoring meter can effectively reflect the changes in the internal current load of the transformer, and can realize the monitoring of the transformer. During the monitoring process, the pure physical chain reaction generated by the linkage between current, heat, and air pressure avoids the delay of electrical signal transmission or electromagnetic interference, ensuring that the monitoring results are highly synchronized with the actual load state. Moreover, its fully mechanical passive working mode eliminates the risk of explosion caused by electrical components.

[0026] The alarm component includes two sets of U-shaped connecting plates 24, a thin steel sheet 23 fixedly connected to a pointer 22, two sets of U-shaped connecting plates 24 fixedly connected to both sides of the thin steel sheet 23, a snap-fit ​​plate 25 fixedly connected to one side of the U-shaped connecting plate 24, a mercury switch 26 snapped into the inside of the snap-fit ​​plate 25, and a connecting wire 27 fixedly connected to one side of the mercury switch 26. As the internal temperature of the oil-immersed transformer body 2 continuously rises, the pointer 22 moves continuously, and the thin steel sheet 23 also moves with the pointer 22. If the internal temperature continues to rise to a certain level, the mercury will fall due to gravity, causing a short circuit at the contact. At this time, the alarm system will be activated to remind the staff that the oil temperature has risen. If the staff does not pay attention or take any action, the temperature will continue to rise, the pointer 22 will continue to move, and the contact of the mercury switch 26 will short circuit, thus triggering a trip. Through the continuous movement of the pointer 22 and the phased triggering of the mercury switch 26, a progressive protection system from early warning to forced tripping is formed, which gives maintenance personnel response time and prevents the accumulation of danger.

[0027] One set of connecting wires 27 is used for alarm, and the other set of connecting wires 27 is used for tripping. The transformer is protected by the cooperation of the two sets of connecting wires 27. The other end of the connecting wires 27 is connected to the alarm and tripping device.

[0028] The buffer assembly includes a cover plate 29, which is fixedly connected to one side of the outer shell 28. The outer shell 28 is fixedly connected to the main body 10 of the monitoring meter. The buffer assembly also includes multiple sets of triangular connecting blocks 30, which are all fixedly connected to the inside of the outer shell 28. A first connecting post 31 is fixedly connected to one side of the triangular connecting block 30. A second connecting post 32 is fixedly connected to the bottom of the first connecting post 31. A second top plate 33 is fixedly connected to the bottom of the second connecting post 32. One end of a first spring 34 is fixedly connected to one side of the second top plate 33. A third top plate 35 is fixedly connected to the other end of the first spring 34. The third top plate 35 is fixedly connected to the main body 10 of the monitoring meter. The rigid distribution of the geometric structure of the outer shell 28 first bears and disperses the mechanical stress from all directions. Then, multiple sets of triangular connecting blocks 30 set inside the outer shell 28 decompose the concentrated load into multi-directional components by virtue of the mechanical stability of the triangular structure. The impact speed is gradually reduced through the stepped transmission path formed by the first connecting column 31 and the second connecting column 32. At this time, the second top plate 33 compresses the first spring 34 connected to it under the action of force. The elastic deformation characteristics of the spring are used to convert kinetic energy into elastic potential energy for energy storage and buffering. After the impact energy is exhausted, the spring releases deformation potential energy to push the second top plate 33 to reset, and drives the entire connecting mechanism to return to the initial state. During this process, the cover plate 29 serves as an auxiliary fixing surface to maintain the stability of the overall structure of the outer shell 28. Together, they form a three-level protection system consisting of rigid support, flexible buffering and dynamic reset, realizing all-round seismic protection for the main body 10 of the monitoring table.

[0029] The inner diameter of the cover plate 29 is smaller than the diameter of the main body 10 of the monitoring meter, and the inner side of the cover plate 29 does not abut against the outer surface of the main body 10 of the monitoring meter.

[0030] The capillary tube 17 is filled with gas and extends into the interior of the oil-immersed transformer body 2 to sense changes in voltage and current in the transformer through an induction connector.

[0031] Working principle: During operation, when the load inside the oil-immersed transformer body 2 is too high, the current inside the oil-immersed transformer body 2 becomes too large. This increases the heat generated by the temperature sensing coil inside the oil-immersed transformer body 2. At this time, the heated gas inside the capillary tube 17 will collide, causing an increase in the internal pressure of the closed system. This increased pressure is transmitted through the capillary tube 17 to the spring tube 18. Under the high internal pressure, the spring tube 18 tends to become round, causing the tube to straighten. This deformation results in a linear displacement at the free end of the spring tube 18. After this displacement, the spring tube 18 pushes the connecting rod 20 to move. After the movement, the threaded block 21 rotates. After the threaded block 21 rotates, the internal temperature drops and the gas inside the tube contracts, and the spring tube 18 also contracts, so the pointer 22 can return to its original position. In this way, the dial of the main body 10 of the monitoring meter can effectively reflect the changes in the internal current load of the transformer, and can realize the monitoring of the transformer. During the monitoring process, the pure physical chain reaction generated by the linkage between current, heat, and air pressure avoids the delay of electrical signal transmission or electromagnetic interference, ensuring that the monitoring results are highly synchronized with the actual load state. Moreover, its fully mechanical passive working mode eliminates the risk of explosion caused by electrical components. When the internal temperature of the oil-immersed transformer body 2 continues to rise, the pointer 22 moves continuously, and the thin steel sheet 23 also moves with the pointer 22. If the internal temperature continues to rise to a certain level, the mercury will fall due to gravity, causing a short circuit at the contact. At this time, the alarm system will be activated to remind the staff that the oil temperature has risen. If the staff does not pay attention or take any action, the temperature will continue to rise, the pointer 22 will continue to move, and the contact of the mercury switch 26 will short circuit, thus triggering a trip. Through the continuous movement of the pointer 22 and the phased triggering of the mercury switch 26, a progressive protection system from early warning to forced tripping is formed, which gives the operation and maintenance personnel response time and prevents the accumulation of danger. When external vibrations act on the main body 10 of the monitoring meter, the positioning columns 12 set on the top of the two sets of symmetrically arranged second support plates 11 form a first degree of freedom buffer through the movable sleeve transverse axis 36, allowing the monitoring meter to swing horizontally around the axis of the transverse axis 36 to consume the kinetic energy in the horizontal plane. The first connecting plate 13 fixed to the outside of the transverse axis 36 forms a second degree of freedom hinge with the second connecting plate 15 through the pitch axis 14, allowing the monitoring meter to pitch in the vertical plane to dissipate the longitudinal impact force. The roll axis 16 extending laterally from the second connecting plate 15 provides a third degree of freedom rotational compensation. Through the linkage of the multi-level hinge structure, the friction damping and automatic reset characteristics of the gravitational torque between each rotating shaft are used to decompose the multi-dimensional vibrations into harmless micro-oscillations, ultimately achieving the stable posture maintenance of the main body 10 of the monitoring meter in complex vibration environments. During the operation, it achieves dynamic balance through the biomechanical mechanism of multi-joint flexible connection, and also effectively isolates vibration interference of different frequencies and directions through the adaptive deformation of the mechanical structure. When the monitoring meter is subjected to external vibration and impact, the hexagonal outer shell 28 first absorbs and disperses mechanical stress from all directions through the rigid distribution of its geometric structure. Subsequently, multiple sets of triangular connecting blocks 30 set inside the outer shell 28 decompose the concentrated load into multi-directional components by virtue of the mechanical stability of the triangular structure. The impact speed is gradually reduced through the stepped transmission path formed by the first connecting column 31 and the second connecting column 32. At this time, the second top plate 33 compresses the first spring 34 connected to it under the action of force. The elastic deformation characteristics of the spring are used to convert kinetic energy into elastic potential energy for energy storage and buffering. After the impact energy is exhausted, the spring releases deformation potential energy to push the second top plate 33 to reset, driving the entire connecting mechanism to return to the initial state. During this process, the cover plate 29 serves as an auxiliary fixing surface to maintain the stability of the overall structure of the outer shell 28. Together, they form a three-level protection system consisting of rigid support, flexible buffering, and dynamic reset, realizing all-round seismic protection for the main body 10 of the monitoring meter.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A monitoring device for an oil-immersed power transformer, comprising a supporting base frame (1), characterized in that, A first support plate (7) is fixedly connected to one side of the support base (1), and a monitoring box (8) is fixedly connected to the top of the first support plate (7). Two sets of shock-absorbing components are installed inside the monitoring box (8). The monitoring box (8) is equipped with a monitoring meter body (10) inside, and the monitoring meter body (10) is equipped with monitoring components inside; A thin steel sheet (23) is provided on the inner side of the main body (10) of the monitoring meter, and an alarm component is provided on one side of the thin steel sheet (23); The outer side of the main body (10) of the monitoring meter is provided with a shell (28), and the inside of the shell (28) is provided with a buffer component.

2. The oil-immersed power transformer monitoring device according to claim 1, characterized in that, The top of the support frame (1) is fixedly connected to the body of the oil-immersed transformer (2). Multiple sets of high-voltage outlets (3) are fixedly connected to one side of the top of the oil-immersed transformer body (2). Multiple sets of low-side interfaces (4) are fixedly connected to one side of the high-voltage outlets (3). The low-side interfaces (4) are fixedly connected to the body of the oil-immersed transformer (2). A dividing switch (5) is fixedly connected to the center line of the top of the oil-immersed transformer body (2). An oil level indicator (6) is fixedly connected to the support frame (1) on one side of the dividing switch (5).

3. The oil-immersed power transformer monitoring device according to claim 2, characterized in that, The shock absorption assembly includes two sets of second support plates (11). The second support plates (11) are fixedly connected to the monitoring box (8). A positioning column (12) is fixedly connected to the top of the second support plate (11). A transverse shaft (36) is movably sleeved on the top of the positioning column (12). A first connecting plate (13) is fixedly connected to the outside of the transverse shaft (36). A pitch shaft (14) is fixedly connected to one side of the first connecting plate (13). A second connecting plate (15) is fixedly connected to one side of the pitch shaft (14). A roll shaft (16) is fixedly connected to one side of the second connecting plate (15). The roll shaft (16) is fixedly connected to one side of the monitoring table body (10).

4. The oil-immersed power transformer monitoring device according to claim 3, characterized in that, The monitoring component includes a capillary tube (17), which is fixedly connected to the top of the monitoring meter body (10). A spring tube (18) is fixedly connected to the bottom of the capillary tube (17). A first top plate (19) is fixedly connected to one side of the spring tube (18). A connecting rod (20) is fixedly connected to the middle of the first top plate (19). A threaded block (21) is threadedly connected to the outside of the connecting rod (20). A pointer (22) is fixedly connected to the outside of the threaded block (21).

5. A monitoring device for an oil-immersed power transformer according to claim 4, characterized in that, The alarm component includes two sets of U-shaped connecting plates (24), the thin steel sheet (23) is fixedly connected to the pointer (22), the two sets of U-shaped connecting plates (24) are respectively fixedly connected to both sides of the thin steel sheet (23), a snap-fit ​​plate (25) is fixedly connected to one side of the U-shaped connecting plate (24), a mercury switch (26) is snapped into the inside of the snap-fit ​​plate (25), and a connecting wire (27) is fixedly connected to one side of the mercury switch (26).

6. The oil-immersed power transformer monitoring device according to claim 5, characterized in that, One set of the connecting lines (27) is used for alarm, and the other set of the connecting lines (27) is used for tripping. The transformer is protected by the cooperation of the two sets of connecting lines (27). The other end of the connecting line (27) is connected to the alarm and tripping device.

7. A monitoring device for an oil-immersed power transformer according to claim 6, characterized in that, The buffer assembly includes a cover plate (29), which is fixedly connected to one side of the outer shell (28), and the outer shell (28) is fixedly connected to the main body (10) of the monitoring meter.

8. A monitoring device for an oil-immersed power transformer according to claim 7, characterized in that, The buffer assembly also includes multiple sets of triangular connecting blocks (30), all of which are fixedly connected to the inside of the outer shell (28). A first connecting post (31) is fixedly connected to one side of the triangular connecting block (30), a second connecting post (32) is fixedly connected to the bottom of the first connecting post (31), a second top plate (33) is fixedly connected to the bottom of the second connecting post (32), one end of a first spring (34) is fixedly connected to one side of the second top plate (33), and a third top plate (35) is fixedly connected to the other end of the first spring (34). The third top plate (35) is fixedly connected to the main body (10) of the monitoring meter.

9. A monitoring device for an oil-immersed power transformer according to claim 8, characterized in that, The inner diameter of the cover plate (29) is smaller than the diameter of the main body (10) of the monitoring meter, and the inner side of the cover plate (29) does not abut against the outer surface of the main body (10) of the monitoring meter.

10. A monitoring device for an oil-immersed power transformer according to claim 9, characterized in that, The capillary tube (17) is filled with gas and extends into the interior of the oil-immersed transformer body (2) to sense changes in voltage and current in the transformer through an induction connector.

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