On-load tap changer operating mechanism abnormality monitoring device and monitoring method

Abstract

The application provides a kind of on-load tap-changer operating mechanism abnormality monitoring device and monitoring method, the device includes device main body, on-load tap-changer on device main body and monitoring mechanism, on-load tap-changer includes driving device, variable speed mechanism, transmission mechanism and has switch main shaft, driving device is fixed on device main body, its output end is fixed with output shaft, variable speed mechanism includes variable speed drive rod, output shaft is connected with variable speed drive rod transmission;Transmission mechanism includes transmission rod, the output end of variable speed drive rod is connected with transmission rod transmission;Transmission rod is connected with switch main shaft transmission, for driving switch main shaft rotation, to drive tap-changer main body action;Monitoring mechanism is used to carry out motion state monitoring to two or more above in output shaft, variable speed drive rod, transmission rod, switch main shaft, to judge whether on-load tap-changer works normally.Can improve the accuracy of monitoring, positioning abnormal section, to abnormal section maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of on-load tap-changer, in particular to an on-load tap-changer operating mechanism abnormality monitoring device and a monitoring method. BACKGROUND

[0002] The on-load tap-changer is a transformer voltage regulating device used to change the winding tap position, and the transformer voltage regulating work can be realized through the work of the tap-changer, and the on-load tap-changer has various models, and the switches of different models are different in structure and requirements. However, the existing on-load tap-changer still has some use defects in the process of use, and the on-load tap-changer will not be in place due to wear during work, which will easily affect the voltage adjustment and cause the circuit to be unable to run normally.

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

[0004] The applicant finds that the prior art at least has the following technical problems: different positions of the on-load tap-changer will have abnormal problems, and the monitoring mechanism in the prior art only monitors a certain point of the driving mechanism, and when the on-load tap-changer has a problem, it is not possible to timely locate where the on-load tap-changer has an abnormality; the monitoring range of the monitoring device is small, and the monitoring range is not complete and the monitoring accuracy is low, and it is difficult to monitor the abnormal problems of the on-load tap-changer in real time, which affects the accuracy of the monitoring device. SUMMARY

[0005] The present application aims to provide an on-load tap-changer operating mechanism abnormality monitoring device and a monitoring method, to solve the technical problems of the monitoring device in the prior art, such as small monitoring range, poor monitoring accuracy, and inability to locate the abnormal position of the on-load tap-changer. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described below.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

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

[0008] The driving device is fixed on the device body, and an output shaft is fixed on an output end of the driving device; the transmission mechanism comprises a transmission driving rod, and the output shaft is in transmission connection with the transmission driving rod;

[0009] The transmission mechanism comprises a transmission rod, and an output end of the transmission driving rod is in transmission connection with the transmission rod;

[0010] The transmission rod is in transmission connection with the switch main shaft, and is used for driving the switch main shaft to rotate, so as to drive the tap switch body to act.

[0011] The monitoring mechanism is used for monitoring the motion state of two or more of the output shaft, the transmission driving rod, the transmission rod and the switch main shaft, so as to determine whether the on-load tap switch works normally.

[0012] Preferably, the on-load tap switch 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 on one end of the output shaft, the slave bevel gear is fixed on an input end of the transmission driving rod, the main bevel gear is in meshing transmission with the slave bevel gear, and both of them are located in the first gear box.

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

[0015] The connecting rod is fixedly connected with the transmission driving rod, the main gear is sleeved on the connecting rod and fixed with the connecting rod; a connecting gear is fixed on the rotating gear disc, the connecting gear is in rotating connection with the fixed cylinder, the connecting gear is distributed outside the main gear and in meshing transmission with the main gear; a slave gear is fixed on the rotating disc, the slave gear is distributed outside the rotating gear disc and in meshing transmission with the rotating gear disc, the rotating disc is in rotating connection in the fixed cylinder and fixedly connected with the transmission rod;

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

[0017] Preferably, the transmission mechanism further comprises a second gear box, a bevel gear one and a bevel gear two, wherein:

[0018] The second gear box is fixed on the device body, the bevel gear one is fixed on an input end of the switch main shaft, the bevel gear two is fixed on an output end of the transmission rod, the bevel gear one and the bevel gear two are in meshing transmission, and both of them are located in the second gear box.

[0019] Preferably, the number of tap switch bodies is two or more, all of the tap switch bodies are located in the device body, the switch main shaft is rotationally connected with the device body, the number of the second gearboxes, the number of the bevel gears two and the number of the tap switch bodies correspond one by one, and the bevel gears two are arranged at intervals along the length direction of the transmission rod.

[0020] Preferably, the monitoring mechanism comprises:

[0021] A first monitor is fixed to the side of the device body facing the output shaft, and is used for monitoring the movement state of the output shaft.

[0022] A second monitor is fixed to the device body, and is used for monitoring the movement state of the variable speed driving rod.

[0023] A third monitor is fixed to the device body, and is used for monitoring the movement state of the transmission rod.

[0024] A monitoring head is fixed to the device body and is arranged correspondingly with the switch main shaft, and is used for monitoring the movement state of the switch main shaft.

[0025] A control unit is electrically connected with the first monitor, the second monitor, the third monitor and the monitoring head, receives and processes the information of the corresponding monitor or the monitoring head, so as to determine whether there is a problem in the working process of the on-load tap changer.

[0026] Preferably, the driving device, the variable speed mechanism and the transmission mechanism are located outside the device body, and the driving device is electrically connected with a power breaker for power-off processing of the driving device.

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

[0028] The support plate is located above the mounting plate, and the tap switch body is fixed to the support plate.

[0029] The mounting plate is arranged at intervals with the bottom wall of the device body, the mounting plate is provided with heat dissipation holes, and the mounting plate is further provided with a heat dissipation plate, and electronic components are fixed to the heat dissipation plate.

[0030] Preferably, the device body is provided with a ventilation window on one side or opposite sides, the device body is fixed with a micro fan, and the micro fan is arranged correspondingly with the ventilation window.

[0031] The application also provides a monitoring method of an on-load tap changer operating mechanism, characterized by using the above-mentioned on-load tap changer operating mechanism abnormality monitoring device, and the monitoring method comprises:

[0032] The driving device transmits power to the variable speed driving rod, the transmission rod, and the switch main shaft in sequence through the output shaft, and the transmission rod drives the switch main shaft to rotate, thereby driving the tap switch body to actuate.

[0033] The monitoring mechanism monitors the motion state of two or more of the output shaft, the variable speed driving rod, the transmission rod, and the switch main shaft, and determines whether the on-load tap switch is operating normally.

[0034] The on-load tap switch operating mechanism abnormality monitoring device and the monitoring method provided by the present application have the following advantages compared with the prior art: the driving device, the variable speed mechanism, and the transmission mechanism are connected in transmission to drive the switch main shaft to rotate, thereby driving the tap switch body to actuate; the motion state of two or more of the output shaft, the variable speed driving rod, the transmission rod, and the switch main shaft is monitored, and the rotational speed or the rotation angle of the output shaft, the variable speed driving rod, the transmission rod, and the switch main shaft is monitored to determine whether the rotational speed or the rotation angle matches the preset value; if the working state of any of the output shaft, the variable speed driving rod, the transmission rod, and the switch main shaft is abnormal, the on-load tap switch is abnormal, and the abnormal section can be accurately located, thereby repairing the abnormal section. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 is a perspective structural schematic view of the on-load tap switch operating mechanism abnormality monitoring device of the present application;

[0037] Figure 2 is a schematic view of the internal structure of the on-load tap switch operating mechanism abnormality monitoring device of the present application;

[0038] Figure 3 is a schematic view of the transmission structure of the driving device, the output shaft, and the driving variable speed rod;

[0039] Figure 4 is a perspective structural schematic view of the driving device, the variable speed mechanism, and the transmission mechanism;

[0040] Figure 5 is a perspective structural schematic view of the fixed cylinder in the variable speed mechanism;

[0041] Figure 6 is a partial sectional view of the fixed cylinder in the variable speed mechanism;

[0042] Figure 7 Figure is a schematic view of the three-dimensional structure of the mounting plate of the present application;

[0043] Figure 8 Figure is a schematic view of the three-dimensional structure of the support plate of the present application.

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

[0045] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0046] In the description of the present application, it should be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0047] The embodiment of the present application provides a kind of on-load tap changer operating mechanism abnormality monitoring device and monitoring method thereof, if the working state of any one of output shaft, variable speed driving rod, transmission rod, switch main shaft is abnormal, on-load tap changer is abnormal, and can prepare positioning abnormal section, to repair abnormal section.

[0048] The following will be combined Figures 1-8The technical solutions provided by the present application are described in more detail.

[0049] Embodiment 1:

[0050] Referring to Figures 1-6 As shown in the figure, the abnormality monitoring device for the operating mechanism of the on-load tap changer provided by the present application comprises a device main body 1, an on-load tap changer and a monitoring mechanism 19 located on the device main body 1. The on-load tap changer comprises a driving mechanism 13 and a switch structure. The switch structure comprises a tap changer main body 17 with a switch main shaft 18. The driving mechanism 13 comprises a driving device 7, a speed changing mechanism 15 and a transmission mechanism 14. The driving device 7 is fixed to the device main body 1, and an output shaft 8 is fixed to the output end of the driving device 7. The speed changing mechanism 15 comprises a speed changing driving rod 11, and the output shaft 8 is in transmission connection with the speed changing driving rod 11. The transmission mechanism 14 comprises a transmission rod 21, and the output end of the speed changing driving rod 11 is in transmission connection with the transmission rod 21. The transmission rod 21 is in transmission connection with the switch main shaft 18, and is used to drive the switch main shaft 18 to rotate, thereby driving the tap changer main body 17 to act. The monitoring mechanism 19 is used to monitor the motion state of two or more of the output shaft 8, the speed changing driving rod 11, the transmission rod 21 and the switch main shaft 18, thereby judging whether the on-load tap changer works normally.

[0051] Referring to Figure 1 and Figure 2 As shown in the figure, a support plate 3 and a mounting plate 2 are fixed in the device main body 1. The support plate 3 is located above the mounting plate 2. The tap changer main body 17 is fixed to the support plate 3. The switch main shaft 18 is in rotational connection with the device main body 1.

[0052] The driving device 7 can be a driving motor. The output end of the driving motor is fixedly connected with the output shaft 8.

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

[0054] The load-tap-changer operating mechanism abnormality monitoring device of the embodiment drives the switch main shaft 18 to rotate through the driving device 7, the speed change mechanism 15, and the transmission mechanism 14, thereby driving the tap-changer main body 17 to act. 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 is monitored. Whether the rotation 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 matches the preset value is determined. If the working state of any of the output shaft 8, the speed change driving rod 11, the transmission rod 21, and the switch main shaft 18 is abnormal, the load-tap-changer is abnormal, and the abnormal section can be accurately located, thereby repairing the abnormal section.

[0055] Embodiment 2

[0056] As shown in Figures 1-4 The embodiment discloses the basic working process of the driving mechanism 13 of the load-tap-changer, and realizes the effect that the load-tap-changer can stably work. The specific content is as follows.

[0057] As shown in Figure 2 and Figure 3 The load-tap-changer further comprises a first gear box 9, a main bevel gear 10, and a slave bevel gear 12. The first gear box 9 is fixed to the device main 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 driving rod 11. The main bevel gear 10 is in meshing transmission with the slave bevel gear 12, and both are located in the first gear box 9. The driving device 7 can provide power for the work of the load-tap-changer.

[0058] When the load-tap-changer operating mechanism abnormality monitoring device is used, the driving device 7 works and drives the output shaft 8 to rotate. At this time, the main bevel gear 10 at the upper end of the output shaft 8 rotates in the first gear box 9. The main bevel gear 10 drives the slave bevel gear 12 connected therewith to rotate. At this time, the slave bevel gear 12 drives the speed change driving rod 11 to rotate at the upper end of the device main body 1. The speed change driving rod 11 drives the switch main shaft 18 to rotate through the speed change mechanism 15 and the transmission mechanism 14. The switch main shaft 18 rotates to complete the switching process of the tap-changer main body 17, thereby ensuring the stability of the switching of the tap-changer main body 17.

[0059] Embodiment 3

[0060] As shown in Figures 1-6 The embodiment discloses the basic working process of the load-tap-changer transmission mechanism and the speed change mechanism 15, and realizes the effect that the load-tap-changer can be accurately controlled. The specific content is as follows.

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

[0062] See also Figures 4-6 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 gear plate 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 rotatably 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 on the outside of the connecting rod 37 and fixed to the connecting rod 37; a connecting gear 39 is fixed on the rotating gear plate 35, and the connecting gear 39 is rotatably connected to the fixed cylinder 33, and 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, and the slave gear 36 is distributed outside the rotating gear plate 35 and meshes with the rotating gear plate 35, and the rotating disk 34 is rotatably connected to the fixed cylinder 33 and fixedly connected to the transmission rod 21; the connecting rod 37, the main gear 38, the rotating gear plate 35, the rotating disk 34 and the transmission rod 21 are coaxially arranged.

[0063] During the operation of the driving device 7, the speed change driving rod 11 drives the connecting rod 37 to rotate inside the fixed cylinder 33, and the rotation of the connecting rod 37 drives the main gear 38 to rotate inside the fixed cylinder 33. The rotation of the main gear 38 drives the connecting gear 39 meshed 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 the slave gear 36, and the slave gear 36 is fixed to 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 outside of the rotating disk 34, and the bevel gear 22 on the outside of the transmission rod 21 can be rotated inside the second gear box 23. The rotation of the bevel gear 22 will drive the bevel gear 1 20 meshing with it to rotate. 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 be completed, and the working process of the transmission mechanism 14 and the speed change mechanism 15 is completed, which effectively improves the stability of the tap changer body 17 switching switch.

[0064] As an alternative embodiment, see Figure 1And Figure 2 As shown in the figure, the number of tap switch bodies 17 is two or more, all the tap switch bodies 17 are located in the device body 1, the switch main shaft 18 is rotationally connected with the device body 1, the number of the second gear box 23 and the number of the bevel gear two 22 correspond to the number of the tap switch body 17 one by one, and the bevel gear two 22 is arranged along the length direction of the transmission rod 21.

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

[0066] As an optional implementation, refer to Figure 1 And Figure 2 As shown in the figure, the driving device 7, the transmission mechanism 15 and the transmission mechanism 14 are located outside the device body 1, the driving device 7 is electrically connected with the power breaker 24, which is used for power-off processing of the driving device 7.

[0067] When the monitoring device detects that the tap switch working state has a problem, the power breaker 24 will power off the driving device 7, so that the tap switch body 17 stops switching, and the tap switch body 17 is protected.

[0068] Example 4:

[0069] Refer to Figure 1 、 Figure 2 、 Figure 7 And Figure 8 As shown in the figure, the embodiment discloses the process of comprehensive monitoring of the monitoring device, solves the problem that the existing monitoring device is difficult to comprehensively monitor, and realizes the effect that the monitoring device can comprehensively monitor, and the specific content is as follows:

[0070] Refer to Figure 1 And Figure 2 As shown in the figure, the monitoring mechanism 19 of the embodiment includes: a monitor one 25 fixed to one side of the device body 1 facing the output shaft 8, used for monitoring the movement state of the output shaft 8; a monitor two 26 fixed on the device body 1, used for monitoring the movement state of the transmission rod 21; a monitor three 27 fixed on the device body 1, used for monitoring the movement state of the transmission rod 21; a monitoring head 28 fixed on the device body 1 and corresponding to the switch main shaft 18, used for monitoring the movement state of the switch main shaft 18; a control unit, the control unit is electrically connected with the monitor one 25, the monitor two 26, the monitor three 27 and the monitoring head 28, and receives and processes the information of the corresponding monitor or monitoring head 28, so as to judge whether there is a problem in the working process of the on-load tap changer.

[0071] Specifically, the control unit includes a connector 29 and a receiver 6, the connector 29 is fixedly installed at the upper end of the support plate 3, and the connector 29 is electrically connected with the receiver 6, the monitor one 25, the monitor two 26, the monitor three 27 and the monitor head 28.

[0072] In the working process of the device, the monitoring mechanism 19 works synchronously and monitors the on-load tap changer operating mechanism in real time. In this process, the receiver 6 receives the information transmitted by the monitor and transmits the information to the processor 5. At this time, the processor 5 receives and processes the information to determine whether there is a problem in the working process of the on-load tap changer.

[0073] In this process, the monitor one 25 and the monitor two 26 monitor the working states of the output shaft 8 and the variable speed drive rod 11 respectively, and the monitor three 27 monitors the working state of the transmission rod 21. The monitor head 28 monitors the switch main shaft 18 and transmits the signal to the receiver 6 through the connector 29. In the working process of the processor 5, the working state information of the output shaft 8, the variable speed drive rod 11, the transmission rod 21 and the switch main shaft 18 can be monitored to determine whether the on-load tap changer works stably. Through the monitoring of the positions of the operating mechanism, the accuracy of the monitoring device can be effectively improved.

[0074] Among them, the above-mentioned monitor one 25, monitor two 26, monitor three 27 and monitor head 28 can be an encoder in the prior art.

[0075] Specifically, if the monitor one 25 detects that the working state of the output shaft 8 is abnormal, which means that the speed, angle and number of revolutions of the output shaft 8 do not match the set value. At this time, it can be judged that the structural abnormality occurs at the position of the output shaft 8, and the driving structure of the output shaft 8 is repaired. If the monitor two 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 driving 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 determined for repair.

[0076] Embodiment 5:

[0077] This embodiment discloses that the monitoring device can work stably through heat dissipation, and realizes the effect that the monitoring device can comprehensively and stably monitor the on-load tap changer. The specific content is as follows:

[0078] The device body 1 is fixed with a support plate 3 and a mounting plate 2, wherein: the support plate 3 is above the mounting plate 2, and the tap switch body 17 is fixed on the support plate 3; the mounting plate 2 is arranged in a spaced manner with the bottom wall of the device body 1, the mounting plate 2 is provided with heat dissipation holes 30, and the mounting plate 2 is further provided with a heat dissipation plate 4, and the electronic components are fixed on the heat dissipation plate 4.

[0079] As an optional implementation, the device body 1 is provided with air vents 31 on one side or opposite sides, and a micro fan 32 is fixed in the device body 1, and the micro fan 32 is correspondingly arranged with the air vents 31.

[0080] In the monitoring process of the device, the processor 5 and the receiver 6 work in real time, and the processor 5 and the receiver 6 work in the process of heat generation, so that the heat dissipation plate 4 and the processor 5 need to be cooled, the heat dissipation plate 4 at the lower end of the processor 5 can absorb the heat generated by the processor 5, and the heat dissipation plate 4 is in a grid structure, which can accelerate the loss of heat of the heat dissipation plate 4, and the processor 5 can be cooled in this process, and the micro fan 32 works and the air between the mounting plate 2 and the support plate 3 is extracted through the air vents 31, and the external air enters between the mounting plate 2 and the support plate 3 through another group of air vents 31, so as to complete the air exchange between the inside and outside of the device, accelerate the heat dissipation of the processor 5 and the receiver 6, and the inside of the mounting plate 2 is provided with heat dissipation holes 30, which can accelerate the heat dissipation, and the air vents 31 are nested in the inside of the device body 1, which can ensure the ventilation effect of the device body 1 through the cleaning of the device body 1, so as to ensure the stability of the heat dissipation of the monitoring mechanism 19 of the device, and increase the practicability.

[0081] The on-load tap changer operating mechanism monitoring device of the embodiment has the following advantages:

[0082] 1. The structures at different positions are monitored, which can further improve the accuracy of the device monitoring.

[0083] 2. The driving device 7 drives the main bevel gear 10 to rotate, so that the from bevel gear 12 and the transmission rod 21 rotate, thereby driving the switch 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 transmission between the gear disc 35 and the from gear 36 can be realized, so as to realize the speed regulation process between the connecting rod 37 and the transmission rod 21, and facilitate the control of the switching of the switch.

[0085] 4、Through the setting of the air vent 31 and the micro fan 32, the rapid heat transfer between the processor 5 and the receiver 6 can be realized, the stability of the processor 5 and the receiver 6 is ensured, and the monitoring accuracy is improved.

[0086] 5、When the monitoring device monitors that the operating state of the tap changer has problems, the power-off device 24 will power off the driving device 7, so that the tap changer stops switching, and the tap changer is protected.

[0087] 6、Through the meshing transmission between the various parts in the variable speed mechanism 15, the precise control of the voltage switching of the on-load tap changer can be realized, and the stability of the on-load tap changer switching is improved.

[0088] 7、Through the clamping connection between the variable speed driving rod 11 and the connecting rod 37, the variable speed mechanism 15 and the transmission mechanism 14 can be conveniently maintained by separating the variable speed driving rod 11 and the connecting rod 37.

[0089] Embodiment 6

[0090] The embodiment provides a kind of on-load tap changer operating mechanism monitoring method, uses the on-load tap changer operating mechanism abnormal monitoring device described above, the monitoring method includes: driving device 7 is sequentially transmitted to variable speed driving rod 11, transmission rod 21 by output shaft 8 with power, transmission rod 21 drives switch main shaft 18 to rotate, to drive tap changer main body 17 to act;Two or more of output shaft 8, variable speed driving rod 11, transmission rod 21, switch main shaft 18 are monitored in motion state by using monitoring mechanism 19, to judge whether on-load tap changer works normally.

[0091] The present application can ensure the accuracy of the device in monitoring the operating mechanism by using the monitor and the monitoring head to monitor the on-load tap changer operating mechanism in real time, and the accuracy of the device in monitoring can be further improved by monitoring different structures.

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

[0093] S1: driving device 7 drives output shaft 8 and main bevel gear 10 to rotate, which can drive transmission rod 21 to rotate through variable speed mechanism 15, and transmission rod 21 rotates to drive switch main shaft 18 to rotate through bevel gear two 22 and bevel gear one 20, so as to complete the switching process of tap changer main body 17;

[0094] S2: the monitor 25, the monitor 26 and the monitor 27 will detect the output shaft 8, the variable speed drive rod 11 and the transmission rod 21 respectively, and will deliver the monitored signal to the receiver 6, while the monitoring head 28 will monitor the switch main shaft 18 and deliver the signal to the receiver 6 through the connector 29, the receiver 6 will deliver the signal to the processor 5 after processing, the processor 5 will detect and process the signal and determine whether the tap switch main body 17 is switched stably, so as to ensure the stable work of the tap switch main body 17;

[0095] S3: the micro fan 32 will work synchronously during the work of the processor 5 and the receiver 6, and the air between the mounting plate 2 and the supporting plate 3 is discharged outward through the air vent 31, while the heat dissipation plate 4 will absorb the heat generated by the processor 5 and diffuse outward, and the heat dissipation hole 30 in the mounting plate 2 will also accelerate the heat loss between the processor 5 and the receiver 6, so as to make the processor 5 and the receiver 6 work stably, and improve the accuracy of real-time monitoring of the processor 5 and the receiver 6.

[0096] In the description of the present specification, the specific features, structures or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0097] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0098] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to 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 device comprises a device body, an on-load tap changer located on the device body, and a monitoring mechanism. The on-load tap changer comprises a drive device, a speed change mechanism, a transmission mechanism, and a tap changer body having a switch main shaft, wherein: The driving device is fixed to the device body, and an output shaft is fixed to the output end of the driving device. The speed change mechanism includes a speed change drive rod, and the output shaft is in transmission connection with the speed change drive rod. The transmission mechanism includes a transmission rod, and the output end of the speed change 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 changer body to operate; 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 operating normally; The on-load tap changer further includes a first gearbox, a main bevel gear, and a slave bevel gear, wherein: The first gearbox is fixed to 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 driven, and both are located in the first gearbox; 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 drive 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 gear plate, and the connecting gear is rotatably connected to the fixed cylinder, and the connecting gear is distributed outside the main gear and meshes with the main gear; a slave gear is fixed on the rotating disk, and the slave gear is distributed outside the rotating gear plate and meshes with the rotating gear plate, and the rotating disk 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.

2. The device for monitoring abnormality of the 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, and the bevel gear 2 is fixed to the output end of the transmission rod. The bevel gear 1 and the bevel gear 2 are engaged for transmission, and both are located in the second gearbox.

3. The device for monitoring abnormality of the on-load tap changer operating mechanism according to claim 2, characterized in that: There are two or more tap changer bodies, all of which are located within the device body. The switch main shaft is rotatably connected to the device body. The number of the second gearboxes and the number of the second bevel gears correspond to the number of the tap changer bodies in a one-to-one manner. The second bevel gears are arranged at intervals along the length direction of the transmission rod.

4. 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 main body of the device, for monitoring the motion state of the speed-shift 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 motion state of the switch main shaft; A control unit is electrically connected to the first monitor, the second monitor, the third monitor, and the monitoring head, and receives and processes information from the corresponding monitor or the monitoring head to determine whether there is a problem during the operation of the on-load tap changer.

5. 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 change mechanism, and the transmission mechanism are located outside the device body. The driving device is electrically connected to a breaker for cutting off power to the driving device.

6. 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, and heat dissipation holes are provided on the mounting plate. A heat dissipation plate is also provided on the mounting plate, and electronic components are fixed on the heat dissipation plate.

7. The device for monitoring abnormality of an on-load tap changer operating mechanism according to claim 1, characterized in that: One side or two opposite sides of the device body are provided with ventilation windows, and a micro fan is fixed in the device body, and the micro fan is provided correspondingly to the ventilation windows.

8. 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 7, the monitoring method comprises: The driving device transmits power to the speed-changing drive 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 changer main body to operate; 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 operating normally.

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