Abnormal monitoring device and monitoring method for on-load tap-changer operating mechanism

Abstract

The invention provides an on-load tap-changer operating mechanism abnormity monitoring device and method, the device comprises a device main body, an on-load tap-changer and a monitoring mechanism, the on-load tap-changer and the monitoring mechanism are located on the device main body, and the on-load tap-changer comprises a driving device, a speed change mechanism, a transmission mechanism and a tap-changer main body with a switch main shaft. The driving device is fixed to the device body, an output shaft is fixed to the output end of the driving device, the speed change mechanism comprises a speed change driving rod, and the output shaft is in transmission connection with the speed change driving rod. The transmission mechanism comprises a transmission rod, and the output end of the variable-speed driving rod is in transmission connection with the transmission rod; the transmission rod is in transmission connection with the switch spindle and used for driving the switch spindle to rotate so as to drive the tap switch body to act. And the monitoring mechanism is used for monitoring motion states of more than two of the output shaft, the variable speed driving rod, the transmission rod and the switch main shaft so as to judge whether the on-load tap-changer works normally or not. The monitoring accuracy can be improved, and an abnormal section can be positioned and maintained.

Description

Technical Field

[0001] The invention relates to the technical field of on-load tap changers, and in particular to an abnormality monitoring device and a monitoring method for an on-load tap changer operating mechanism. Background Art

[0002] The on-load tap changer is a voltage regulating device used by transformers to change the tapping position of windings. The voltage regulation of transformers can be achieved through the operation of the tap changer. There are many types of on-load tap changers, and the structures and requirements of different types of switches are different. However, the existing on-load tap changers still have certain use defects during use. During the operation of the on-load tap changer, due to wear, the replacement may not be in place, which is easy to affect the voltage adjustment and fail to meet the normal operation of the circuit.

[0003] The on-load tap changer operating mechanism in the prior art includes a driving mechanism and a tap changer body, wherein the driving mechanism is drivingly connected to the tap changer body to complete the process of switching the tap changer body. There are some on-load tap changer monitoring devices in the prior art, which are used to monitor whether the switch body is working normally.

[0004] The applicant has found that the prior art has at least the following technical problems: abnormal problems may occur at different positions of the on-load tap changer, but the monitoring mechanism in the prior art only monitors a certain point of the driving mechanism. When a problem occurs in the on-load tap changer, it is impossible to timely locate where the abnormality occurs in the on-load tap changer; the monitoring device has a small monitoring range, which is prone to problems such as incomplete monitoring range and low monitoring accuracy. It is difficult to perform real-time monitoring when abnormal problems occur in other positions of the on-load tap changer, which affects the monitoring accuracy of the monitoring device. Summary of the invention

[0005] The object of the present invention is to provide an abnormality monitoring device for an on-load tap changer operating mechanism and a monitoring method thereof, so as to solve the technical problems existing in the prior art that the monitoring device has a small detection range, poor monitoring accuracy, and cannot locate the abnormal position of the on-load tap changer. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The on-load tap changer operating mechanism abnormality monitoring device provided by the present invention comprises a device body, an on-load tap changer located on the device body, and a monitoring mechanism, wherein the on-load tap changer comprises a driving device, a speed changing mechanism, a transmission mechanism, and a tap changer body having a switch main shaft, wherein:

[0008] The driving device is fixed on the device body, and an output shaft is fixed on the output end of the driving device. The speed change mechanism includes a speed change driving rod, and the output shaft is in driving connection with the speed change driving rod.

[0009] The transmission mechanism comprises a transmission rod, and the output end of the speed-changing drive rod is transmission-connected to the transmission rod;

[0010] The transmission rod is in transmission connection with the switch main shaft, and is used to drive the switch main shaft to rotate, thereby driving the tap switch body to move;

[0011] The monitoring mechanism is used to monitor the motion status of two or more of the output shaft, the speed change drive rod, the transmission rod, and the switch main shaft, so as to determine whether the on-load tap changer is working normally.

[0012] Preferably, the on-load tap changer further comprises a first gear box, a main bevel gear, and a slave bevel gear, wherein:

[0013] The first gear box is fixed on the device body, the main bevel gear is fixed to one end of the output shaft, the slave bevel gear is fixed to the input end of the speed change drive rod, the main bevel gear and the slave bevel gear are meshed and transmitted, and both are located in the first gear box.

[0014] Preferably, the speed change mechanism further comprises a fixed cylinder, a connecting rod located in the fixed cylinder, a main gear, a rotating gear plate, and a rotating plate, wherein:

[0015] The connecting rod is fixedly connected to the speed-changing driving rod, and the main gear is sleeved outside the connecting rod and fixed to the connecting rod; a connecting gear is fixed on the rotating toothed disc, and the connecting gear is rotatably connected to the fixed cylinder, and the connecting gear is distributed outside the main gear and meshed with the main gear; a slave gear is fixed on the rotating disc, and the slave gear is distributed outside the rotating toothed disc and meshed with the rotating toothed disc, and the rotating disc is rotatably connected to the fixed cylinder and fixedly connected to the transmission rod;

[0016] The connecting rod, the main gear, the rotating gear plate, the rotating plate and the transmission rod are arranged coaxially.

[0017] Preferably, the transmission mechanism further includes a second gear box, a bevel gear 1 and a bevel gear 2, wherein:

[0018] The second gearbox is fixed on the device body, the bevel gear 1 is fixed to the input end of the switch main shaft, the bevel gear 2 is fixed to the output end of the transmission rod, the bevel gear 1 and the bevel gear 2 are meshed for transmission, and both are located in the second gearbox.

[0019] Preferably, the number of the tap changer bodies is more than two, all of the tap changer bodies are located in the device body, the switch main shaft is rotatably connected to the device body, the number of the second gear boxes and the number of the second bevel gears correspond to the number of the tap changer bodies one by one, and the second bevel gears are arranged at intervals along the length direction of the transmission rod.

[0020] Preferably, the monitoring mechanism includes:

[0021] A first monitor, fixed to a side of the device body facing the output shaft, for monitoring the motion state of the output shaft;

[0022] A second monitor, fixed to the device body, for monitoring the motion state of the speed-changing drive rod;

[0023] A third monitor, fixed to the main body of the device, for monitoring the motion state of the transmission rod;

[0024] A monitoring head, fixed on the device body and arranged corresponding to the switch main shaft, for monitoring the movement state of the switch main shaft;

[0025] A control unit is electrically connected to the monitor 1, the monitor 2, the monitor 3 and the monitoring head, and receives and processes information of the corresponding monitor or the monitoring head, so as to determine whether there is a problem during the operation of the on-load tap changer.

[0026] Preferably, the driving device, the speed change mechanism and the transmission mechanism are located outside the device body, and the driving device is electrically connected to a circuit breaker for powering off the driving device.

[0027] Preferably, a support plate and a mounting plate are fixed inside the device body, wherein:

[0028] The support plate is located above the mounting plate, and the tap changer body is fixed on the support plate;

[0029] The mounting plate is spaced apart from the bottom wall of the device body, the mounting plate is provided with heat dissipation holes, and the mounting plate is also provided with a heat dissipation plate, and the electronic components are fixed on the heat dissipation plate.

[0030] Preferably, ventilation windows are provided on one side or two opposite sides of the device body, a micro fan is fixed inside the device body, and the micro fan is arranged corresponding to the ventilation windows.

[0031] The present invention also provides a method for monitoring an on-load tap changer operating mechanism, characterized in that the above-mentioned on-load tap changer operating mechanism abnormality monitoring device is used, and the monitoring method comprises:

[0032] The driving device transmits power to the speed-changing driving rod and the transmission rod in sequence through the output shaft, and the transmission rod drives the switch main shaft to rotate, thereby driving the tap switch body to move;

[0033] The monitoring mechanism is used to monitor the motion status of two or more of the output shaft, the speed change drive rod, the transmission rod, and the switch main shaft to determine whether the on-load tap changer is working normally.

[0034] The on-load tap changer operating mechanism abnormality monitoring device and monitoring method provided by the present invention have the following beneficial effects compared with the prior art: the switch main shaft is driven to rotate by the driving device, the speed change mechanism and the transmission mechanism connected by transmission, so as to drive the tap switch main body to move; the motion state of more than two of the output shaft, the speed change drive rod, the transmission rod and the switch main shaft is monitored, and by monitoring the parameters such as the rotation speed or the rotation angle of the output shaft, the speed change drive rod, the transmission rod and the switch main shaft, it is judged whether the rotation speed and the rotation angle match the preset value; if any working state of the output shaft, the speed change drive rod, the transmission rod and the switch main shaft is abnormal, the on-load tap changer is abnormal, and the abnormal section can be accurately located, so as to repair the abnormal section. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a three-dimensional structural schematic diagram of the abnormal monitoring device for the operating mechanism of an on-load tap changer of the present invention;

[0037] Figure 2 It is a schematic diagram of the internal structure of the abnormal monitoring device for the on-load tap changer operating mechanism of the present invention;

[0038] Figure 3 It is a schematic diagram of the transmission structure of the driving device, the output shaft and the driving gear lever;

[0039] Figure 4 It is a three-dimensional structural diagram of the driving device, the speed changing mechanism, and the transmission mechanism;

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure inside the fixed cylinder in the speed change mechanism;

[0041] Figure 6 It is a partial cross-sectional schematic diagram of the interior of the fixed cylinder in the speed change mechanism;

[0042] Figure 7 This is a schematic diagram of the three-dimensional structure of the mounting plate of the present invention;

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of the support plate of the present invention.

[0044] In the figure: 1. device body; 2. mounting plate; 3. support plate; 4. heat sink; 5. processor; 6. receiver; 7. drive device; 8. output shaft; 9. first gear box; 10. main bevel gear; 11. speed change drive rod; 12. slave bevel gear; 13. drive mechanism; 14. transmission mechanism; 15. speed change mechanism; 16. switch structure; 17. tap changer body; 18. switch main shaft; 19. monitoring mechanism; 20. bevel gear one; 21. transmission rod; 22. bevel gear two; 23. second gear box; 24. circuit breaker; 25. monitor one; 26. monitor two; 27. monitor three; 28. monitoring head; 29. ​​connector; 30. heat dissipation hole; 31. ventilation window; 32. micro fan; 33. fixed cylinder; 34. rotating disk; 35. rotating gear disk; 36. slave gear; 37. connecting rod; 38. main gear; 39. connecting gear. DETAILED DESCRIPTION

[0045] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0047] The embodiment of the present invention provides an abnormality monitoring device and a monitoring method for an on-load tap changer operating mechanism. If any working state of an output shaft, a speed change drive rod, a transmission rod, and a switch main shaft is abnormal, the on-load tap changer is abnormal, and the abnormal section can be positioned so as to repair the abnormal section.

[0048] Combine the following Figure 1-Figure 8The technical solution provided by the present invention is described in more detail.

[0049] Embodiment 1:

[0050] See also Figure 1-Figure 6 As shown, the on-load tap changer operating mechanism abnormality monitoring device provided by the present invention comprises a device body 1, an on-load tap changer located on the device body 1, and a monitoring mechanism 19, the on-load tap changer comprises a driving mechanism 13 and a switch structure 16, the switch structure 16 comprises a tap changer body 17 having a switch main shaft 18, the driving mechanism 13 comprises a driving device 7, a speed change mechanism 15, and a transmission mechanism 14, wherein: the driving device 7 is fixed on the device body 1, an output shaft 8 is fixed at its output end, the speed change mechanism 15 comprises a speed change driving rod 11, and the output shaft 8 is transmission-connected to the speed change driving rod 11; the transmission mechanism 14 comprises a transmission rod 21, and the output end of the speed change driving rod 11 is transmission-connected to the transmission rod 21; the transmission rod 21 is transmission-connected to the switch main shaft 18, and is used to drive the switch main shaft 18 to rotate, thereby driving the tap changer body 17 to operate; the monitoring mechanism 19 is used to monitor the motion state of two or more of the output shaft 8, the speed change driving rod 11, the transmission rod 21, and the switch main shaft 18, thereby judging whether the on-load tap changer operates normally.

[0051] See also Figure 1 and Figure 2 As shown, a support plate 3 and a mounting plate 2 are fixed in the device body 1 , the support plate 3 is located above the mounting plate 2 , the tap switch body 17 is fixed on the support plate 3 , and the switch main shaft 18 is rotatably connected to the device body 1 .

[0052] The driving device 7 may be a driving motor, and an output end of the driving motor is fixedly connected to the output shaft 8 .

[0053] When the on-load tap changer operating mechanism abnormality monitoring device is used, the device is first placed at a position where it needs to work, and then the device can be put into operation. During the operation of the device, the driving device 7 drives the switch structure 16 to work through the speed change mechanism 15 and the transmission mechanism 14, thereby completing the operation process of the on-load tap changer, and the monitoring mechanism 19 monitors the working state of the on-load tap changer, thereby ensuring the effect of the device on monitoring the on-load tap changer.

[0054] The abnormality monitoring device for the on-load tap changer operating mechanism of the present embodiment drives the switch main shaft 18 to rotate through the transmission-connected driving device 7, the speed change mechanism 15, and the transmission mechanism 14, thereby driving the tap changer body 17 to move; monitors the motion state of two or more of the output shaft 8, the speed change driving rod 11, the transmission rod 21, and the switch main shaft 18, and determines whether the speed and the rotation angle match the preset value by monitoring the parameters such as the speed or the rotation angle of the output shaft 8, the speed change driving rod 11, the transmission rod 21, and the switch main shaft 18. If any working state of the output shaft 8, the speed change driving rod 11, the transmission rod 21, and the switch main shaft 18 is abnormal, the on-load tap changer is abnormal, and the abnormal section can be accurately located, so that the abnormal section can be repaired.

[0055] Embodiment 2:

[0056] See also Figure 1-Figure 4 As shown, this embodiment discloses the basic working process of the driving mechanism 13 of the on-load tap changer of the monitoring device, and realizes the effect that the on-load tap changer can work stably. The specific contents are as follows:

[0057] See also Figure 2 and Figure 3 As shown, the on-load tap changer further includes a first gear box 9, a main bevel gear 10, and a slave bevel gear 12, wherein: the first gear box 9 is fixed to the device body 1, the main bevel gear 10 is fixed to one end of the output shaft 8, the slave bevel gear 12 is fixed to the input end of the speed change drive rod 11, the main bevel gear 10 and the slave bevel gear 12 are meshed for transmission, and both are located in the first gear box 9. The drive device 7 can provide power for the operation of the on-load tap changer.

[0058] When the on-load tap changer operating mechanism abnormality monitoring device is used, the driving device 7 will work and drive the output shaft 8 to rotate, and at this time, the main bevel gear 10 at its upper end will be driven to rotate inside the first gear box 9, and the main bevel gear 10 will drive the slave bevel gear 12 meshing with it to rotate during the rotation. At this time, the slave bevel gear 12 will drive the speed change drive rod 11 to rotate at the upper end of the device body 1, and the speed change drive rod 11 will drive the switch main shaft 18 to rotate through the speed change mechanism 15 and the transmission mechanism 14. The rotation of the switch main shaft 18 will complete the process of switching the tap switch body 17, thereby ensuring the stability of the tap switch body 17 switching the switch.

[0059] Embodiment 3:

[0060] In this embodiment, Figure 1-Figure 6 As shown, the basic working process of the on-load tap changer transmission machine and the speed change mechanism 15 is disclosed, and the on-load tap changer can be precisely controlled. The specific contents are as follows:

[0061] See also Figure 2 and Figure 4 As shown, the transmission mechanism 14 also includes a second gear box 23, a bevel gear 1 20 and a bevel gear 22, wherein: the second gear box 23 is fixed on the device body 1, the bevel gear 1 20 is fixed to the input end of the switch main shaft 18, the bevel gear 22 is fixed to the output end of the transmission rod 21, the transmission rod 21 is rotatably connected to the second gear box 23, the bevel gear 1 20 and the bevel gear 22 are meshed for transmission, and both are located in the second gear box 23.

[0062] See also Figure 4-Figure 6 As shown, the speed change mechanism 15 also includes a fixed cylinder 33, a connecting rod 37 located in the fixed cylinder 33, a main gear 38, a rotating toothed disk 35, and a rotating disk 34, wherein: the connecting rod 37 is fixedly connected to the speed change drive rod 11, specifically, the connecting rod 37 is rotationally connected to the fixed cylinder 33, and the connecting rod 37 is clamped and fixed to the speed change drive rod 11; the main gear 38 is sleeved outside the connecting rod 37 and fixed to the connecting rod 37; a connecting gear 39 is fixed on the rotating toothed disk 35, the connecting gear 39 is rotationally connected to the fixed cylinder 33, the connecting gear 39 is distributed outside the main gear 38 and meshes with the main gear 38; a slave gear 36 is fixed on the rotating disk 34, the slave gear 36 is distributed outside the rotating toothed disk 35 and meshes with the rotating toothed disk 35, the rotating disk 34 is rotationally connected to the fixed cylinder 33, and is fixedly connected to the transmission rod 21; the connecting rod 37, the main gear 38, the rotating toothed disk 35, the rotating disk 34 and the transmission rod 21 are coaxially arranged.

[0063] When the driving device 7 is working, the speed change driving rod 11 will drive the connecting rod 37 to rotate inside the fixed cylinder 33, and the main gear 38 will be driven to rotate inside the fixed cylinder 33 during the rotation of the connecting rod 37. The rotation of the main gear 38 will drive the connecting gear 39 meshing with it, and the connecting gear 39 is fixedly installed on the outer side of the rotating gear plate 35. At this time, the main gear 38 can drive the rotating gear plate 35 to rotate through the connecting gear 39, and the outer side of the rotating gear plate 35 is meshed with a slave gear 36, and the slave gear 36 is fixed on the outer side of the rotating disk 34. At this time, the rotating disk 34 will rotate through The slave gear 36 drives the rotating disk 34 to rotate, and a transmission rod 21 is fixedly installed on the outer side of the rotating disk 34, and the bevel gear 22 on the outer side of the transmission rod 21 can be rotated inside the second gear box 23, and the rotation of the bevel gear 22 will drive the bevel gear 1 20 meshing with it to rotate, and at this time, the bevel gear 1 20 will drive the bevel gear 1 20 on the upper end of the switch main shaft 18 to rotate, so that the bevel gear 1 20 can drive the switch main shaft 18 to complete, and the working process of the transmission mechanism 14 and the speed change mechanism 15 is completed, which effectively improves the stability of the switching switch of the tap switch body 17.

[0064] As an alternative embodiment, see Figure 1and Figure 2 As shown, the number of tap changer bodies 17 is more than two, all of the tap changer bodies 17 are located in the device body 1, the switch main shaft 18 is rotatably connected to the device body 1, the number of second gear boxes 23 and the number of second bevel gears 22 correspond to the number of tap changer bodies 17, and the second bevel gears 22 are arranged at intervals along the length direction of the transmission rod 21.

[0065] The device can realize the switching actions of multiple tap switch bodies 17 at the same time, and monitor the working states of multiple tap switch bodies 17 .

[0066] As an alternative embodiment, see Figure 1 and Figure 2 As shown, the driving device 7 , the speed change mechanism 15 , and the transmission mechanism 14 are located outside the device body 1 , and the driving device 7 is electrically connected to a circuit breaker 24 for powering off the driving device 7 .

[0067] When the monitoring device detects that there is a problem in the working state of the tap changer, the breaker 24 will cut off the power supply to the driving device 7, so that the tap changer body 17 stops switching, thereby protecting the tap changer body 17.

[0068] Embodiment 4:

[0069] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, this embodiment discloses a process of comprehensive monitoring by a monitoring device, solves the problem that existing monitoring devices are difficult to perform comprehensive monitoring, and achieves the effect that the monitoring device can perform comprehensive monitoring. The specific contents are as follows:

[0070] See also Figure 1 and Figure 2 As shown, the monitoring mechanism 19 of this embodiment includes: a monitor 1 25, fixed to the side of the device body 1 facing the output shaft 8, and used to monitor the movement state of the output shaft 8; a monitor 26, fixed to the device body 1, and used to monitor the movement state of the speed change drive rod 11; a monitor 3 27, fixed to the device body 1, and used to monitor the movement state of the transmission rod 21; a monitoring head 28, fixed to the device body 1 and arranged corresponding to the switch main shaft 18, and used to monitor the movement state of the switch main shaft 18; a control unit, the control unit is electrically connected to the monitor 1 25, the monitor 2 26, the monitor 3 27 and the monitoring head 28, and receives and processes the information of the corresponding monitor or the monitoring head 28, so as to determine whether there is a problem during the operation of the on-load tap changer.

[0071] Specifically, the control unit includes a connector 29 and a receiver 6. The connector 29 is fixedly mounted on the upper end of the support plate 3. The connector 29 is electrically connected to the receiver 6, monitor 1 25, monitor 2 26, monitor 3 27 and the monitoring head 28.

[0072] During the operation of the device, the monitoring mechanism 19 will work synchronously and monitor the on-load tap changer operating mechanism in real time. During this process, the receiver 6 will receive the information transmitted by the monitor and transmit the information to the processor 5. At this time, the processor 5 will receive and process the information to determine whether there is a problem in the operation of the on-load tap changer.

[0073] During this process, monitor 1 25 and monitor 2 26 will monitor the working status of the output shaft 8 and the speed change drive rod 11 respectively, while monitor 3 27 will monitor the working status of the transmission rod 21, and the monitoring head 28 will monitor the switch main shaft 18 and transmit the signal to the receiver 6 through the connector 29. During the operation of the processor 5, the information transmitted by the working status of the output shaft 8, the speed change drive rod 11, the transmission rod 21 and the switch main shaft 18 can be monitored to determine whether the load tap changer is working stably. By monitoring each position of the operating mechanism, the monitoring accuracy of the monitoring device can be effectively improved.

[0074] Among them, the above-mentioned monitor 1 25, monitor 2 26, monitor 3 27 and monitoring head 28 can be encoders in the prior art.

[0075] Specifically, if the monitor 1 25 detects that the working state of the output shaft 8 is abnormal, the abnormal working state means that the speed, rotation angle, and number of rotations of the output shaft 8 are not equal to the set values. At this time, it can be judged that the structural abnormality occurs at the position of the output shaft 8, and the drive structure of the output shaft 8 is repaired. If the monitor 2 26 detects that the working state of the variable speed drive shaft is abnormal, it can be judged that the structural abnormality occurs at the position of the variable speed drive shaft, and the drive structure of the variable speed drive shaft is repaired. Similarly, it can be judged whether there is an abnormality at the transmission rod 21 and the switch main shaft 18, and the abnormal section can be accurately judged for easy maintenance.

[0076] Embodiment 5:

[0077] This embodiment discloses a process in which the monitoring device can work stably by heat dissipation, and realizes the effect that the monitoring device can perform comprehensive and stable monitoring of the on-load tap changer. The specific contents are as follows:

[0078] A support plate 3 and a mounting plate 2 are fixed in the device body 1, wherein: the support plate 3 is located above the mounting plate 2, and the tap changer body 17 is fixed on the support plate 3; the mounting plate 2 is spaced apart from the bottom wall of the device body 1, and heat dissipation holes 30 are provided on the mounting plate 2, and a heat dissipation plate 4 is also provided on the mounting plate 2, and electronic components are fixed on the heat dissipation plate 4.

[0079] As an optional implementation, ventilation windows 31 are provided on one side or two opposite sides of the device body 1 , a micro fan 32 is fixed inside the device body 1 , and the micro fan 32 and the ventilation windows 31 are provided correspondingly.

[0080] During the monitoring process of the device, the processor 5 and the receiver 6 will work in real time, and heat will be generated during the operation of the processor 5 and the receiver 6, so it is necessary to cool the heat sink 4 and the processor 5. The heat sink 4 at the lower end of the processor 5 will absorb the heat generated by the processor 5, and the heat sink 4 has a grid-like structure when viewed from the side, which can accelerate the loss of heat from the heat sink 4. In this process, the processor 5 can be cooled, and the micro-blower 32 will work and draw the air between the mounting plate 2 and the support plate 3 through the air vent 31, and the outside air will enter between the mounting plate 2 and the support plate 3 through another set of air vents 31, thereby completing the alternation of air inside and outside the device, accelerating the heat dissipation of the processor 5 and the receiver 6, and the interior of the mounting plate 2 is provided with heat dissipation holes 30 to accelerate heat dissipation. At the same time, the air vent 31 is nested in the interior of the device body 1, and the ventilation effect of the device body 1 can be ensured by cleaning the device body 1, thereby ensuring the stability of the heat dissipation of the device monitoring mechanism 19, thereby increasing the overall practicality.

[0081] The on-load tap changer operating mechanism monitoring device of this embodiment:

[0082] 1. Monitoring and processing structures at different locations can further improve the monitoring accuracy of the device.

[0083] 2. The main bevel gear 10 is driven to rotate by the driving device 7, so that the slave bevel gear 12 and the transmission rod 21 can be rotated, thereby driving the switch main shaft 18 to rotate, and completing the switching action of the on-load tap changer body 17.

[0084] 3. Through the rotation of the connecting rod 37 and the main gear 38, the transmission between the main gear 38 and the connecting gear 39 and the rotating gear plate 35 and the slave gear 36 can be realized, thereby realizing the speed regulation process between the connecting rod 37 and the transmission rod 21, which is convenient for controlling the switching of the switch.

[0085] 4. By providing the ventilation window 31 and the micro fan 32, rapid heat transfer between the processor 5 and the receiver 6 can be achieved, thereby ensuring the working stability of the processor 5 and the receiver 6 and improving the accuracy of monitoring.

[0086] 5. When the monitoring device detects that there is a problem with the working state of the tap changer, the circuit breaker 24 will cut off the power supply to the driving device 7, so that the tap changer stops switching and protects the tap changer.

[0087] 6. Through the meshing transmission between the various parts inside the speed change mechanism 15, the voltage switching of the on-load tap changer can be accurately controlled, thereby improving the switching stability of the on-load tap changer.

[0088] 7. The speed change mechanism 15 and the transmission mechanism 14 can be easily repaired by engaging the speed change drive rod 11 and the connecting rod 37 and separating the speed change drive rod 11 and the connecting rod 37 .

[0089] Example 6

[0090] The present embodiment provides a method for monitoring an operating mechanism of an on-load tap changer, using the above-mentioned abnormality monitoring device for the operating mechanism of an on-load tap changer. The monitoring method comprises: enabling the driving device 7 to sequentially transmit power to the speed-changing driving rod 11 and the transmission rod 21 through the output shaft 8, and the transmission rod 21 drives the switch main shaft 18 to rotate, thereby driving the tap switch body 17 to move; and using the monitoring mechanism 19 to monitor the motion status of more than two of the output shaft 8, the speed-changing driving rod 11, the transmission rod 21, and the switch main shaft 18, to determine whether the on-load tap changer is working normally.

[0091] The present invention can ensure the accuracy of the device's monitoring of the operating mechanism by real-time monitoring of the on-load tap changer operating mechanism through the monitor and the monitoring head, and can further improve the accuracy of the device's monitoring by monitoring structures at different positions.

[0092] Specifically, the monitoring method of the on-load tap changer operating mechanism abnormality monitoring device of this embodiment includes the following steps:

[0093] S1: The driving device 7 drives the output shaft 8 and the main bevel gear 10 to rotate, which can drive the transmission rod 21 to rotate through the speed change mechanism 15, and the rotation of the transmission rod 21 will drive the switch main shaft 18 to rotate through the bevel gear 2 22 and the bevel gear 1 20, thereby completing the switching process of the tap switch body 17;

[0094] S2: Monitor 1 25, monitor 2 26 and monitor 3 27 will detect the output shaft 8, the speed change drive rod 11 and the transmission rod 21 respectively, and transmit the monitoring signal to the receiver 6. At the same time, the monitoring head 28 will monitor the switch main shaft 18 and transmit the signal to the receiver 6 through the connector 29. The receiver 6 will process the signal and transmit it to the processor 5. The processor 5 will detect and process the signal and determine whether the tap switch body 17 is stably switched, so as to ensure the stable operation of the tap switch body 17.

[0095] S3: During the operation of the processor 5 and the receiver 6, the micro fan 32 will work synchronously to discharge the air between the mounting plate 2 and the support plate 3 to the outside through the air vent 31, and the heat sink 4 will absorb the heat emitted by the processor 5 and diffuse it outward. At the same time, the heat dissipation holes 30 inside the mounting plate 2 will also accelerate the loss of heat between the processor 5 and the receiver 6, so that the processor 5 and the receiver 6 can work stably and improve the accuracy of real-time monitoring of the processor 5 and the receiver 6.

[0096] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0098] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A device for monitoring abnormality of an on-load tap changer operating mechanism, characterized in that: The invention comprises a device body, an on-load tap changer located on the device body and a monitoring mechanism, wherein the on-load tap changer comprises a driving device, a speed changing mechanism, a transmission mechanism and a tap changer body having a switch main shaft, wherein: The driving device is fixed on the device body, and an output shaft is fixed on the output end of the driving device. The speed change mechanism includes a speed change driving rod, and the output shaft is in driving connection with the speed change driving rod. The transmission mechanism comprises a transmission rod, and the output end of the speed-changing drive rod is transmission-connected to the transmission rod; The transmission rod is in transmission connection with the switch main shaft, and is used to drive the switch main shaft to rotate, thereby driving the tap switch body to move; The monitoring mechanism is used to monitor the motion status of two or more of the output shaft, the speed change drive rod, the transmission rod, and the switch main shaft, so as to determine whether the on-load tap changer is working normally.

2. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: The on-load tap changer further comprises a first gear box, a main bevel gear, and a slave bevel gear, wherein: The first gear box is fixed on the device body, the main bevel gear is fixed to one end of the output shaft, the slave bevel gear is fixed to the input end of the speed change drive rod, the main bevel gear and the slave bevel gear are meshed and transmitted, and both are located in the first gear box.

3. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: The speed change mechanism further includes a fixed cylinder, a connecting rod located in the fixed cylinder, a main gear, a rotating gear plate, and a rotating plate, wherein: The connecting rod is fixedly connected to the speed-changing driving rod, and the main gear is sleeved outside the connecting rod and fixed to the connecting rod; a connecting gear is fixed on the rotating toothed disc, and the connecting gear is rotatably connected to the fixed cylinder, and the connecting gear is distributed outside the main gear and meshed with the main gear; a slave gear is fixed on the rotating disc, and the slave gear is distributed outside the rotating toothed disc and meshed with the rotating toothed disc, and the rotating disc is rotatably connected to the fixed cylinder and fixedly connected to the transmission rod; The connecting rod, the main gear, the rotating gear plate, the rotating plate and the transmission rod are arranged coaxially.

4. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: The transmission mechanism further includes a second gear box, a bevel gear 1 and a bevel gear 2, wherein: The second gearbox is fixed on the device body, the bevel gear 1 is fixed to the input end of the switch main shaft, the bevel gear 2 is fixed to the output end of the transmission rod, the bevel gear 1 and the bevel gear 2 are meshed for transmission, and both are located in the second gearbox.

5. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 4, characterized in that: The number of the tap switch bodies is more than two, all of the tap switch bodies are located in the device body, the switch main shaft is rotatably connected to the device body, the number of the second gear boxes and the number of the second bevel gears correspond to the number of the tap switch bodies, and the second bevel gears are arranged at intervals along the length direction of the transmission rod.

6. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: The monitoring agencies include: A first monitor, fixed to a side of the device body facing the output shaft, for monitoring the motion state of the output shaft; A second monitor, fixed to the device body, for monitoring the motion state of the speed-changing drive rod; A third monitor, fixed to the main body of the device, for monitoring the motion state of the transmission rod; A monitoring head, fixed on the device body and arranged corresponding to the switch main shaft, for monitoring the movement state of the switch main shaft; A control unit is electrically connected to the monitor 1, the monitor 2, the monitor 3 and the monitoring head, and receives and processes information of the corresponding monitor or the monitoring head, so as to determine whether there is a problem during the operation of the on-load tap changer.

7. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: The driving device, the speed changing mechanism and the transmission mechanism are located outside the device body, and the driving device is electrically connected to a circuit breaker for cutting off the power supply to the driving device.

8. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: A support plate and a mounting plate are fixed in the main body of the device, wherein: The support plate is located above the mounting plate, and the tap changer body is fixed on the support plate; The mounting plate is spaced apart from the bottom wall of the device body, the mounting plate is provided with heat dissipation holes, and the mounting plate is also provided with a heat dissipation plate, and the electronic components are fixed on the heat dissipation plate.

9. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: A ventilation window is arranged on one side or two opposite sides of the device body, a micro fan is fixed inside the device body, and the micro fan is arranged corresponding to the ventilation window.

10. A method for monitoring an on-load tap changer operating mechanism, characterized in that: Using the on-load tap changer operating mechanism abnormality monitoring device according to any one of claims 1 to 8, the monitoring method comprises: The driving device transmits power to the speed-changing driving rod and the transmission rod in sequence through the output shaft, and the transmission rod drives the switch main shaft to rotate, thereby driving the tap switch body to move; The monitoring mechanism is used to monitor the motion status of two or more of the output shaft, the speed change drive rod, the transmission rod, and the switch main shaft to determine whether the on-load tap changer is working normally.

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