Self-monitoring transformer

Abstract

The invention provides a self-monitoring transformer, and belongs to the technical field of transformers. Wherein the piston is arranged on the first reference pipe, and the piston rod penetrates through the sealing plate. The filter plate is arranged in the first reference pipe. The piston rod is provided with a conveying flow channel, and the area between the piston and the filter plate is communicated with the conveying flow channel. A first one-way assembly is arranged in the conveying flow channel. A second one-way assembly is arranged at the end, away from the sealing plate, of the first reference pipe. The plug rod is driven by the driving assembly in a reciprocating mode. The visual assembly is arranged in the first reference tube. The processor is used for judging the health degree of the insulating oil in the transformer body according to the image data acquired by the visual assembly. The transformer insulating oil monitoring system can continuously and autonomously monitor the actual condition of the transformer insulating oil, avoids the defects of manual monitoring, and effectively improves the operation safety of the transformer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a self-monitoring transformer. BACKGROUND

[0002] In a transformer, insulating oil plays the roles of insulation protection, heat dissipation and cooling, arc extinguishing protection, material protection, etc. In order to ensure the normal operation of the transformer, the insulating oil of the transformer needs to be detected and replaced regularly.

[0003] At present, the detection of the insulating oil of the transformer is carried out by manual operation. The operating personnel need to regularly sample and detect the insulating oil of the transformer and record the changes in the properties of the insulating oil of the transformer. Manual detection has a large human error, high labor cost, and is prone to the problem of untimely detection. SUMMARY

[0004] The purpose of the present application is to provide a self-monitoring transformer which can continuously and autonomously monitor the actual condition of the insulating oil of the transformer, thereby avoiding the drawbacks of manual monitoring and effectively improving the operation safety of the transformer.

[0005] The embodiment of the present application is implemented as follows:

[0006] A self-monitoring transformer comprises a transformer body and a monitoring mechanism.

[0007] The monitoring mechanism comprises a first reference tube, a piston, a plug rod, a filter plate, a visual assembly and a processor.

[0008] One end of the first reference tube is closed by a sealing plate. The piston is fitted in the first reference tube, the plug rod is connected to one side of the piston close to the sealing plate, and the plug rod penetrates the sealing plate.

[0009] The filter plate is arranged in the first reference tube and located on the side of the piston away from the plug rod.

[0010] An end face of the plug rod away from the piston is provided with a conveying channel, the conveying channel extends along the plug rod and extends to the piston, and the area between the piston and the filter plate is in communication with the conveying channel.

[0011] One end of the conveying channel away from the piston is in communication with the top of an oil tank of the transformer body, and one end of the first reference tube away from the sealing plate is in communication with the bottom of the oil tank of the transformer body.

[0012] A first one-way assembly is arranged in the conveying channel to allow the insulating oil in the conveying channel to flow only to the area between the piston and the filter plate.

[0013] A second one-way assembly is arranged at one end of the first reference tube away from the sealing plate to allow the insulating oil in the first reference tube to flow out only from one end of the first reference tube away from the sealing plate.

[0014] The piston rod is driven reciprocally by a drive assembly.

[0015] The vision component is located inside the first reference tube, on the side of the filter plate near the piston and close to the filter plate.

[0016] The vision component is electrically connected to the processor, which is used to determine the health of the insulating oil in the transformer body based on the image data acquired by the vision component.

[0017] Furthermore, the drive assembly drives the piston rod to rotate while simultaneously reciprocating along the axial direction of the first reference tube.

[0018] A mating hole is provided on the side of the piston near the filter plate, and the mating hole extends axially along the first reference tube.

[0019] The filter plate is rotatably fitted to the first reference tube. A mating rod is connected to the side of the filter plate near the piston, and the mating rod extends axially along the first reference tube. Along the axial direction of the first reference tube, the mating rod slides into a mating hole.

[0020] A cleaning component is fixedly connected to the inner wall of the first reference tube. The cleaning component is located on the side of the filter plate near the piston and is in contact with the filter plate.

[0021] Furthermore, the drive components include: a driver, a first gear, a second gear, and a transmission rack.

[0022] The first gear and the second gear are spaced apart and their rotation axes are parallel.

[0023] The power output section of the driver is connected to a drive gear, which engages between the first gear and the second gear. Both the first gear and the second gear mesh with the drive gear.

[0024] The rotational axes of the drive gear, the first gear, and the second gear are located in the same plane, and this plane is perpendicular to the piston rod.

[0025] One end of the transmission rack is eccentrically hinged to the side wall of the first gear, and the other end is eccentrically hinged to the side wall of the second gear. The transmission rack is set perpendicular to the piston rod.

[0026] The outer side wall of the plug rod has a first annular flange and a second annular flange spaced apart. The outer side wall of the plug rod also has an external gear ring located between the first annular flange and the second annular flange.

[0027] The transmission rack is fitted between the first annular flange and the second annular flange, and the transmission rack meshes with the outer gear ring.

[0028] Furthermore, the mating hole and the conveying channel are connected by a connecting hole, and the first unidirectional component is located in the connecting hole.

[0029] The filter plate is connected with a support rod near the piston, the support rod is coaxially arranged with the filter plate, and a support plate is coaxially connected to the end of the support rod away from the filter plate.

[0030] The support plate is provided with a clearance hole near the piston, the clearance hole is coaxially arranged with the filter plate, and the clearance hole extends along the axial direction of the first reference tube and penetrates the support rod and the filter plate in sequence.

[0031] The piston is connected with a control rod near the filter plate, the control rod extends along the axial direction of the first reference tube and is matched with the clearance hole.

[0032] The control rod has an inner cavity, the inner side wall of the inner cavity is provided with a notch penetrating the side wall of the control rod, and a sliding block is accommodated in the notch, a first elastic member is matched with the side of the sliding block close to the inner cavity, and the end of the first elastic member away from the sliding block abuts against the inner cavity.

[0033] The first reference tube is connected with a second reference tube at the end away from the sealing plate, and the inner diameter of the first reference tube is smaller than that of the second reference tube.

[0034] The second one-way assembly comprises a guide rod and a partition plate.

[0035] The guide rod is connected to the end face of the first reference tube close to the second reference tube, the guide rod extends along the axial direction of the first reference tube, and a stopper is connected to the end of the guide rod away from the first reference tube.

[0036] The partition plate is located in the second reference tube, and the guide rod penetrates the partition plate. Along the axial direction of the guide rod, the partition plate is slidingly matched with the guide rod.

[0037] The partition plate is provided with an opening for the control rod to pass through.

[0038] When the piston moves towards the filter plate, after the matching rod extends into the matching hole and contacts the first one-way assembly, the matching rod can prevent the first one-way assembly from being opened.

[0039] When the piston moves towards the filter plate, when the distance between the piston and the filter plate reaches a minimum value, the control rod passes through the opening, and the sliding block is located on the side of the filter plate away from the piston.

[0040] When the piston moves away from the filter plate, after the matching rod is separated from the first one-way assembly, the control rod is separated from the filter plate.

[0041] Further, the opening is provided with a valve, and when the control rod passes through the opening, the control rod pushes open the valve.

[0042] When the piston moves away from the filter plate, when the control rod is separated from the filter plate, the valve is closed.

[0043] Further, the cleaning member is a cover body, and the cleaning member covers the filter plate.

[0044] The cleaning piece is provided with an opening on one side thereof, which is in communication with the inner space of the cleaning piece.

[0045] The cleaning piece is provided with a plate body for closing the opening, the plate body is hinged to the side edge of the opening close to the support rod, and the plate body is located on the inner side of the cleaning piece.

[0046] The rotation axis of the plate body is parallel to the central axis of the first reference tube, and the plate body is provided with a torsion spring, so that one end of the plate body away from the hinged end is attached to the inner wall of the cleaning piece in a natural state.

[0047] The side wall of the cleaning piece away from the opening is made of a mesh plate, and the mesh hole diameter of the mesh plate is less than or equal to the filter hole diameter of the filter plate.

[0048] The filter plate is provided with a mounting hole arranged along the axial direction of the first reference tube, and a matching column is slidingly matched in the mounting hole, and the matching column is provided with a second elastic piece, so that the matching column partially protrudes to the side of the filter plate close to the piston in a natural state.

[0049] When the matching column contacts the plate body, the plate body is pushed towards the inside of the cleaning piece by the matching column, so that the opening is opened.

[0050] When the matching column contacts the side wall of the cleaning piece away from the opening, the cleaning piece pushes the matching column into the mounting hole.

[0051] Further, the first reference tube is further connected with a residue discharge pipe, the residue discharge pipe is in communication with the inner space of the cleaning piece, and the residue discharge pipe is provided with a control valve.

[0052] The technical scheme of the embodiment of the application has the following beneficial effects:

[0053] In the use process, the processor of the self-monitoring transformer can judge the content of solid impurities in the insulating oil according to the image data, and evaluate the overall impurity content level of the insulating oil in the transformer body according to the amount of solid impurities, so as to judge whether the amount of impurities in the insulating oil is too much (too much solid impurities will directly affect the insulation performance of the insulating oil) and whether the insulating oil needs to be replaced.

[0054] In the process of piston movement, the solid impurities in the insulating oil will continuously accumulate on the side of the filter plate close to the piston, and the processor can judge the overall impurity content of the insulating oil according to the content change of the solid impurities in the image data.

[0055] If the impurity content in the image remains at a low level, it indicates that the overall impurity content in the insulating oil is low. If the impurity content in the image increases rapidly in a short period of time, it indicates that the overall impurity content in the insulating oil has changed significantly. This suggests that the safety and reliability of the insulating oil has decreased, and it also indicates that there is a problem with some components inside the transformer. In this case, the transformer body needs to be inspected according to the actual situation.

[0056] Overall, the self-monitoring transformer provided in this application embodiment can continuously and autonomously monitor the actual condition of the transformer insulating oil, avoiding the drawbacks of manual monitoring and effectively improving the operational safety of the transformer. Attached Figure Description

[0057] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram of the overall structure of the self-monitoring transformer provided in the embodiments of this application;

[0059] Figure 2 This is a status diagram of the monitoring mechanism (when the piston is furthest from the filter plate).

[0060] Figure 3 This is a schematic diagram of the state of the drive component (when the drive rack is at its highest position).

[0061] Figure 4 A schematic diagram of the end of the piston rod away from the piston;

[0062] Figure 5 This is a schematic diagram of the structure at the bottom of the control lever (when the sliding block is extended).

[0063] Figure 6 This is a schematic diagram of the structure at the bottom of the control lever (when the sliding block is retracted).

[0064] Figure 7 A schematic diagram of the state of the drive components (first gear relative to each other) Figure 3 When rotating 90°).

[0065] Figure 8 For the driver component to be in Figure 7 The diagram shown illustrates the state of the piston.

[0066] Figure 9 A schematic diagram of the state of the drive components (first gear relative to each other) Figure 3When the driving assembly is rotated 180°);

[0067] Figure 10 When the driving assembly is rotated 180°); Figure 9 When the driving assembly is rotated 180°);

[0068] Figure 11 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0069] When the driving assembly is rotated 180°); Figure 12 When the driving assembly is rotated 180°); Figure 3 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0070] When the driving assembly is rotated 180°); Figure 13 When the driving assembly is rotated 180°); Figure 3 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0071] When the driving assembly is rotated 180°); Figure 14 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0072] When the driving assembly is rotated 180°); Figure 15 When the driving assembly is rotated 180°); Figure 14 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0073] When the driving assembly is rotated 180°); Figure 16 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0074] When the driving assembly is rotated 180°); Figure 17 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0075] When the driving assembly is rotated 180°); Figure 18 When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0076] When the driving assembly is rotated 180°); When the driving assembly is rotated 180°);

[0077] 100 - transformer main body; 110 - monitoring mechanism; 200 - first reference tube; 210 - sealing plate; 220 - cleaning member; 221 - opening; 222 - plate body; 223 - slag discharge pipe; 300 - piston; 310 - fitting hole; 320 - communication hole; 330 - control rod; 331 - inner cavity; 332 - notch; 333 - sliding block; 334 - first elastic member; 335 - anti-dropping block; 340 - plug rod; 341 - delivery flow channel; 342 - first annular flange; 343 - second annular flange; 344 - outer gear ring; 400 - filter plate; 410 - fitting rod; 420 - support rod; 430 - support plate; 440 - first hole section; 450 - second hole section; 460 - third hole section; 470 - fitting column; 480 - end block; 490 - second elastic member; 510 - driving gear; 520 - first gear; 530 - second gear; 540 - transmission rack; 610 - guide rod; 620 - stopper; 630 - partition plate; 700 - adapter pipe. DETAILED DESCRIPTION

[0078] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0079] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0080] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0081] The terms "first", "second", "third", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0082] In addition, the terms "vertical", "parallel", etc. do not mean that the components are absolutely vertical or parallel, but can be slightly inclined.

[0083] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrange", "install", "connect" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0084] The technical solutions of the present application will be exemplarily described below through some embodiments.

[0085] Referring to Figures 1-2 The embodiment of the present application provides a self-monitoring transformer, which comprises a transformer body 100 and a monitoring mechanism 110.

[0086] The monitoring mechanism 110 comprises a first reference tube 200, a piston 300, a plug rod 340, a filter plate 400, a visual assembly (not shown in the figure) and a processor (not shown in the figure).

[0087] One end of the first reference tube 200 is closed by a sealing plate 210. In the embodiment, the first reference tube 200 is arranged in the vertical direction, and the top end of the first reference tube 200 is closed by the sealing plate 210.

[0088] The piston 300 is fitted to the first reference tube 200. Along the axial direction of the first reference tube 200, the piston 300 is slidingly fitted to the first reference tube 200. The piston 300 and the first reference tube 200 are slidingly sealed.

[0089] The plug rod 340 is fixedly connected to one side of the piston 300 close to the sealing plate 210, the plug rod 340, the piston 300 and the first reference tube 200 are coaxially arranged, and the plug rod 340 penetrates the sealing plate 210. Along the axial direction of the first reference tube 200, the plug rod 340 is slidingly fitted with the sealing plate 210. Among them, the sealing plate 210 is provided with a gas pressure balance hole (not shown in the figure) which is in communication with the space on the side of the piston 300 close to the sealing plate 210.

[0090] The filter plate 400 is arranged in the first reference tube 200, and the filter plate 400 is perpendicular to the central axis of the first reference tube 200, and the filter plate 400 is located on the side of the piston 300 away from the plug rod 340. Along the axial direction of the first reference tube 200, the filter plate 400 is fixedly fitted with the first reference tube 200.

[0091] The end face of the plug rod 340 away from the piston 300 is provided with a conveying flow channel 341, the conveying flow channel 341 extends along the axial direction of the plug rod 340 and extends into the piston 300, and the area between the piston 300 and the filter plate 400 is in communication with the conveying flow channel 341.

[0092] The conveying flow channel 341 is in communication with the top of the oil tank of the transformer body 100 at the end away from the piston 300, and the first reference tube 200 is in communication with the bottom of the oil tank of the transformer body 100 at the end away from the sealing plate 210.

[0093] The first one-way component (not shown in the figure) is arranged in the conveying flow channel 341, so that the insulating oil in the conveying flow channel 341 can only flow to the area between the piston 300 and the filter plate 400, and the insulating oil between the piston 300 and the filter plate 400 cannot flow back to the conveying flow channel 341. The first one-way component can be selected from a valve, a one-way valve, etc.

[0094] The end of the first reference tube 200 away from the sealing plate 210 is provided with a second one-way component, so that the insulating oil in the first reference tube 200 can only flow out from the end of the first reference tube 200 away from the sealing plate 210.

[0095] The plug rod 340 is driven reciprocally by the driving assembly, so that the piston 300 can reciprocally approach and move away from the filter plate 400 along the axis of the first reference tube 200.

[0096] The visual component is arranged in the first reference tube 200, and the visual component is arranged near the filter plate 400 on the side of the filter plate 400 close to the piston 300.

[0097] The visual component can be a camera equipped with a light source, and is not limited thereto. The visual component is electrically connected to the processor, and the visual component is used to collect image data of the insulating oil near the filter plate 400.

[0098] The processor is used to judge the health degree of the insulating oil in the transformer body 100 according to the image data obtained by the visual component. Specifically, the processor can judge the content of solid impurities in the insulating oil according to the image data, and evaluate the overall impurity content level of the insulating oil in the transformer body according to the amount of solid impurities, so as to judge whether the amount of impurities in the insulating oil is too much (too much solid impurities will directly affect the insulation performance of the insulating oil) and whether the insulating oil needs to be replaced.

[0099] When the plug rod 340 moves away from the filter plate 400, the first one-way component is opened, the second one-way component is closed, and the insulating oil in the upper part of the oil tank of the transformer body 100 is sucked into the first reference tube 200 through the conveying flow channel 341.

[0100] When the plug rod 340 moves towards the side close to the filter plate 400, the first one-way component is closed, the second one-way component is opened, the insulating oil sucked in is filtered by the filter plate 400 under the action of the piston 300, and the solid impurities in the insulating oil are isolated on the side of the filter plate 400 close to the piston 300. That is, in the process of movement of the piston 300, the solid impurities in the insulating oil will continuously enrich on the side of the filter plate 400 close to the piston 300, and the processor can judge the impurity content of the insulating oil as a whole according to the change of the content of the solid impurities in the image data. For example, if the content of the impurities in the image continuously remains at a low level, it means that the overall impurity content of the insulating oil is low. If the content of the impurities in the image rapidly increases in a short time, it means that the overall impurity content of the insulating oil has changed greatly, which indicates that the safety and reliability of the insulating oil has decreased, and on the other hand, it also indicates that there is a problem with some components inside the transformer main body 100, so the transformer main body 100 needs to be checked according to the actual situation.

[0101] Overall, the self-monitoring transformer provided by the embodiment of the present application can continuously and autonomously monitor the actual condition of the transformer insulating oil, avoiding the drawbacks of manual monitoring, and effectively improving the operation safety of the transformer.

[0102] It should be noted that in the present embodiment, the visual component can be embedded in the inner wall of the first reference tube 200. In addition, during the movement of the piston 300, when the distance between the piston 300 and the filter plate 400 reaches a minimum value, there is still a certain distance between the piston 300 and the filter plate 400. When the distance between the piston 300 and the filter plate 400 reaches the minimum value, the visual component is still located in the area between the piston 300 and the filter plate 400.

[0103] In the present embodiment, the driving component drives the plug rod 340 to rotate while driving the plug rod 340 to reciprocate along the axial direction of the first reference tube 200.

[0104] The side of the piston 300 close to the filter plate 400 is provided with a matching hole 310, and the matching hole 310 extends along the axial direction of the first reference tube 200. The matching hole 310 is a blind hole, and a plurality of matching holes 310 are uniformly and spacedly arranged along the circumferential direction of the piston 300. The specific number of the matching holes 310 can be flexibly set according to actual needs.

[0105] Along the circumferential direction of the first reference tube 200, the plug rod 340 is rotationally fitted to the sealing plate 210, the piston 300 is rotationally fitted to the first reference tube 200, and the filter plate 400 is rotationally fitted to the first reference tube 200. The piston 300 and the first reference tube 200 are rotationally sealed, and the filter plate 400 and the first reference tube 200 are also rotationally sealed.

[0106] The filter plate 400 is fixedly connected with a matching rod 410 on the side close to the piston 300, and the matching rod 410 extends along the axial direction of the first reference tube 200. The number of the matching rod 410 is the same as that of the matching hole 310, and the matching rod 410 is arranged in one-to-one correspondence with the matching hole 310. The matching rod 410 is used to be matched into the matching hole 310, and the matching rod 410 and the matching hole 310 are slidingly matched along the axial direction of the first reference tube 200.

[0107] The inner wall of the first reference tube 200 is fixedly connected with a cleaning piece 220, and the cleaning piece 220 is located on the side close to the piston 300 of the filter plate 400 and is attached to the surface of the filter plate 400.

[0108] Through the design, in the process that the piston 300 moves along the axial direction of the first reference tube 200, the piston 300 also rotates along the circumferential direction of the first reference tube 200. The piston 300 drives the matching rod 410 and the filter plate 400 to rotate together. When the filter plate 400 rotates, the filter plate 400 moves relative to the cleaning piece 220. The cleaning piece 220 can clean the solid impurities on the surface of the filter plate 400. This can avoid the impurities from blocking the filter holes of the filter plate 400, and also promote the solid impurities to move around the filter plate 400, which is conducive to the visual assembly to collect image data that can better reflect the actual volume of the filtered impurities.

[0109] Specifically, please refer to Figure 3 and Figure 4 The driving assembly includes a driver (not shown in the figure), a first gear 520, a second gear 530, and a transmission rack 540.

[0110] The first gear 520 and the second gear 530 are arranged at intervals, and the rotation axes of the two are arranged in parallel.

[0111] The power output part of the driver is connected with a driving gear 510, the driving gear 510 is matched between the first gear 520 and the second gear 530, and the first gear 520 and the second gear 530 are engaged with the driving gear 510.

[0112] The rotation axes of the driving gear 510, the first gear 520, and the second gear 530 are parallel to each other and located in the same plane, and the plane is perpendicular to the central axis of the plug rod 340. The diameters of the first gear 520 and the second gear 530 are the same, and the rotation axis of the driving gear 510 is perpendicular to and intersects with the central axis of the plug rod 340.

[0113] The first gear 520 and the second gear 530 are arranged close to the plug rod 340.

[0114] One end of the transmission rack 540 is eccentrically hinged to the first gear 520 near one side wall of the plug rod 340, and the other end of the transmission rack 540 is eccentrically hinged to the second gear 530 near one side wall of the plug rod 340, and the rotation axis of the two ends of the transmission rack 540 is parallel to the rotation axis of the drive gear 510. The transmission rack 540 is arranged vertically to the plug rod 340.

[0115] The outer side wall of the plug rod 340 has a first annular flange 342 and a second annular flange 343, both of which are coaxially arranged with the plug rod 340. The first annular flange 342 and the second annular flange 343 are arranged at intervals along the axial direction of the plug rod 340. The first annular flange 342 and the second annular flange 343 are located outside the first reference tube 200, and the first annular flange 342 is located on the side of the second annular flange 343 away from the sealing plate 210.

[0116] The outer side wall of the plug rod 340 also has an outer gear ring 344, which is located between the first annular flange 342 and the second annular flange 343.

[0117] The transmission rack 540 is fitted between the first annular flange 342 and the second annular flange 343, and the tooth part of the transmission rack 540 is located on the side close to the outer gear ring 344. The first annular flange 342 and the second annular flange 343 are in close contact with the transmission rack 540, and the surfaces of the first annular flange 342 and the second annular flange 343 can slide relative to the surface of the transmission rack 540.

[0118] The transmission rack 540 is engaged with the outer gear ring 344.

[0119] Further, the matching hole 310 is arranged at intervals with the conveying flow channel 341, and the matching hole 310 and the conveying flow channel 341 are communicated by the communication hole 320, which is located in the piston 300. The communication hole 320 is arranged along the radial direction of the piston 300, and the first one-way component is arranged in the communication hole 320.

[0120] The filter plate 400 is fixedly connected with a support rod 420 on the side close to the piston 300, and the diameter of the support rod 420 is smaller than the inner diameter of the first reference tube 200. The support rod 420, the filter plate 400 and the first reference tube 200 are coaxially arranged.

[0121] The end of the support rod 420 away from the filter plate 400 is coaxially connected with a support plate 430, and the support plate 430 is circular. The diameter of the support plate 430 is greater than the diameter of the support rod 420, and the diameter of the support plate 430 is smaller than the inner diameter of the first reference tube 200. The matching rod 410 is installed on the support plate 430.

[0122] The support plate 430 is provided with a clearance hole on the side close to the piston 300, the clearance hole is coaxial with the filter plate 400, and the clearance hole extends along the axial direction of the first reference tube 200 and penetrates the support rod 420 and the filter plate 400 in sequence.

[0123] The piston 300 is connected with a control rod 330 on the side close to the filter plate 400, the control rod 330 is coaxial with the first reference tube 200, the control rod 330 extends along the axial direction of the first reference tube 200 and is matched with the clearance hole, and the diameter of the control rod 330 is matched with the hole diameter of the clearance hole.

[0124] Please refer to Figure 5 and Figure 6 , the control rod 330 has an inner cavity 331, and the inner cavity 331 is located at the end of the control rod 330 away from the piston 300.

[0125] The inner side wall of the inner cavity 331 is provided with a notch 332 penetrating the side wall of the control rod 330, and the notch 332 contains a sliding block 333. The sliding block 333 is partially located in the inner cavity 331 and partially located in the notch 332.

[0126] The side close to the inner cavity 331 of the sliding block 333 is matched with a first elastic member 334, and the end of the first elastic member 334 away from the sliding block 333 abuts in the inner cavity 331.

[0127] In this embodiment, the opposite sides of the inner cavity 331 are both provided with notches 332, and each notch 332 is matched with a sliding block 333. In particular, the two sliding blocks 333 are jointly matched with a first elastic member 334, and the first elastic member 334 abuts between the two sliding blocks 333.

[0128] Under the elastic force of the first elastic member 334, the two sliding blocks 333 are both pushed out of the notch 332, so that the sliding block 333 extends out of the control rod 330 through the notch 332. Among them, the two sliding blocks 333 are both matched with a anti-extrusion block 335 for preventing the sliding block 333 from being completely extruded out of the notch 332. The anti-extrusion block 335 is located on the side close to the inner cavity 331 of the sliding block 333, when the anti-extrusion block 335 is in close contact with the inner wall of the inner cavity 331, the sliding block 333 cannot further extend outward, and the extension amount of the sliding block 333 reaches the maximum, as shown in Figure 5 .

[0129] When the sliding block 333 is extruded by the outside, it can move into the inner cavity 331 against the elastic force of the first elastic member 334, until the extruded part of the sliding block 333 completely returns to the notch 332, as shown in Figure 6 .

[0130] In the embodiment, the first reference tube 200 is fixedly connected with a second reference tube at one end away from the sealing plate 210, and the inner diameter of the first reference tube 200 is smaller than that of the second reference tube. The second reference tube is coaxially arranged with the first reference tube 200. The end of the second reference tube away from the first reference tube 200 is in communication with the bottom of the oil tank of the transformer main body 100. That is, the first reference tube 200 is in communication with the oil tank through the second reference tube.

[0131] The second one-way assembly comprises a guide rod 610 and a partition plate 630.

[0132] The guide rod 610 is fixedly connected to the end face of the first reference tube 200 close to the second reference tube, located in the second reference tube, and extends along the axial direction of the first reference tube 200. The end of the guide rod 610 away from the first reference tube 200 is connected with a stopper 620. The diameter of the stopper 620 is greater than that of the guide rod 610.

[0133] The plurality of guide rods 610 are uniformly and spacedly arranged along the circumferential direction of the first reference tube 200.

[0134] The partition plate 630 is located in the second reference tube, and the guide rod 610 penetrates through the partition plate 630. Along the axial direction of the guide rod 610, the partition plate 630 is slidingly fitted on the guide rod 610. The stopper 620 is used to prevent the partition plate 630 from being detached from the end of the guide rod 610 away from the first reference tube 200.

[0135] The partition plate 630 is a circular plate, and the diameter of the partition plate 630 is greater than the inner diameter of the first reference tube 200 and smaller than the inner diameter of the second reference tube. The partition plate 630 is coaxially arranged with the first reference tube 200.

[0136] The partition plate 630 is provided with an opening hole through which the control rod 330 penetrates, and the hole diameter of the opening hole is matched with the outer diameter of the control rod 330. The control rod 330 is in a cylindrical shape, and the opening hole is a circular hole. When the control rod 330 is fitted in the opening hole, the control rod 330 is rotatably fitted in the opening hole along the circumferential direction of the control rod 330. The control rod 330 can slide along the opening hole along the axial direction of the control rod 330.

[0137] It should be noted that when the piston 300 moves towards the filter plate 400, the fitting rod 410 can prevent the first one-way assembly from being opened after the fitting rod 410 extends into the fitting hole 310 and contacts the first one-way assembly. When the piston 300 moves towards the filter plate 400, the control rod 330 penetrates through the opening hole when the distance between the piston 300 and the filter plate 400 reaches a minimum value, and the sliding block 333 is located on the side of the filter plate 400 away from the piston 300. When the piston 300 moves away from the filter plate 400, the control rod 330 is separated from the filter plate 400 after the fitting rod 410 is separated from the first one-way assembly.

[0138] Specifically, to provide a more comprehensive explanation of how it works, we will use an example... Figure 2 The state shown is the initial state. In this state, the driving component is in... Figure 3 In the indicated state, the transmission rack 540 is at its highest position, and correspondingly, the piston rod 340 is also at its highest position. At this time, the distance between the piston 300 and the filter plate 400 reaches its maximum, the piston 300 separates from the mating rod 410, the control rod 330 is located in the clearance hole, and the sliding block 333 of the control rod 330 is pressed against the wall of the clearance hole. Figure 6 As shown, the partition 630 is located at the bottom end of the guide rod 610 and is in contact with the stop 620.

[0139] When the driver is activated, the drive gear 510 rotates in the direction of K1, the first gear 520 rotates in the direction of K2, and the second gear 530 rotates in the direction of K3. The first gear 520 and the second gear 530 rotate synchronously, and the drive rack remains perpendicular to the plug rod 340 and moves with the first gear 520 and the second gear 530.

[0140] During this process, the drive rack drives the piston rod 340 to move downwards, and the piston 300 moves closer to the filter plate 400 while rotating. The piston 300 pushes the insulating oil through the filter plate 400, and the impurities in the insulating oil are filtered out by the filter plate 400.

[0141] After the first gear 520 and the second gear 530 rotate 90°, the drive assembly enters... Figure 7 The state shown is as follows. In this state, the mating hole 310 of the piston 300 is aligned with the mating rod 410, and the top end of the mating rod 410 just enters the mating hole 310. The bottom end of the control rod 330 passes through the filter plate 400 and continues to move towards the partition plate 630, as shown. Figure 8 As shown. At this time, the sliding block 333 of the control lever 330 is in the extended state, as shown. Figure 5 As shown.

[0142] As the actuator continues to operate, the mating rod 410 moves further into the mating hole 310, and the piston 300 can drive the support plate 430, support rod 420, and filter plate 400 to rotate together via the mating rod 410. The filter plate 400 rotates relative to the cleaning plate, which prevents impurities from depositing on the surface of the filter plate 400, reducing the probability of the filter plate 400 being clogged by impurities, and enabling the filter plate 400 to maintain good permeability, thus avoiding any obstruction to the filtration efficiency of the insulating oil.

[0143] After the first gear 520 and the second gear 530 continue to rotate 90°, the drive assembly enters... Figure 9The state shown is as follows. In this state, the transmission rack 540 is at its lowest position, and correspondingly, the piston rod 340 is also at its lowest position. At this time, the distance between the piston 300 and the filter plate 400 is at its minimum, the length of the mating rod 410 extending into the mating hole 310 is at its maximum, and the bottom end of the control rod 330 passes through the partition plate 630, as shown. Figure 10 As shown. Sliding block 333 is in Figure 5 As shown, the sliding block 333 is attached to the side of the partition 630 away from the piston 300.

[0144] In this embodiment, the first unidirectional component is a unidirectional valve (not shown in the figure), which is disposed at one end of the connecting hole 320 near the mating hole 310. The edge of the unidirectional valve near the filter plate 400 is connected to the edge of the connecting hole 320 near the filter plate 400. That is, when the unidirectional valve is opened, the side of the unidirectional valve away from the filter plate 400 separates from the edge of the connecting hole 320.

[0145] When the mating rod 410 is mated into the mating hole 310, the mating rod 410 can stop the one-way valve on the side away from the delivery channel 341, so that the one-way valve is always in contact with the opening of the connecting hole 320 and the one-way valve is in the closed state.

[0146] As the driver continues to operate, the transmission rack 540 begins to move upward, and the piston 300 begins to move away from the filter plate 400. Since the one-way valve is stopped by the engaging rod 410 and cannot open, and because the partition plate 630 is spaced apart from the first reference tube 200, the insulating oil in the second reference tube will re-enter the first reference tube 200 and backflush the filter plate 400 during this process. This further prevents the filter plate 400 from being clogged by impurities. Simultaneously, the control rod 330 moves along with the piston 300. The control rod 330, using the sliding block 333, drives the partition plate 630 along the guide rod 610 towards the filter plate 400; that is, the partition plate 630 is lifted by the control rod 330.

[0147] When the first gear 520 and the second gear 530 continue to rotate a certain angle (less than 90°, the specific angle can be flexibly set according to actual needs), the mating rod 410 is still in the mating hole 310, but the mating rod 410 is just separated from the one-way valve, such as Figure 11 As shown. At this time, the control lever 330 raises the partition 630 to be in contact with the end wall of the first reference tube 200 near the second reference tube.

[0148] As the control lever 330 continues to move, since the partition 630 cannot move further, the sliding block 333 will be pushed into the notch 332, thereby separating the control lever 330 from the partition 630. At the same time, the one-way valve opens smoothly, and insulating oil can enter the first reference tube 200 from the piston 300. Meanwhile, the partition 630 seals the end of the first reference tube 200 near the second reference tube, and the insulating oil in the second reference tube no longer continues to backflow.

[0149] Specifically, the diameter of the opening in the partition 630 can be set to be much smaller than the diameter of the connecting hole 320, for example, the diameter of the opening can be 1 / 20 to 1 / 10 of the diameter of the connecting hole 320, and it is not limited to this. In this way, the return flow of insulating oil at the opening can be ignored.

[0150] Alternatively, the opening in the partition 630 may be provided with a valve (not shown in the figure). The valve is located on the side of the partition 630 away from the filter plate 400. When the control rod 330 passes through the opening, the control rod 330 pushes the valve open. When the control rod 330 separates from the filter plate 400, the valve re-attaches to the partition 630 and closes the opening.

[0151] In this way, after the connecting hole 320 is opened, as the piston 300 continues to move away from the filter plate 400, the partition 630 will always be in contact with the end of the first reference tube 200.

[0152] When the first gear 520 and the second gear 530 are opposite Figure 9 After the state continues to rotate 90°, the drive component enters... Figure 12 The state shown indicates that the mating rod 410 is about to be completely withdrawn from the mating hole 310.

[0153] As the actuator continues to operate, the piston 300 continues to move away from the filter plate 400, and the insulating oil continues to enter the first reference tube 200 through the connecting hole 320. The partition plate 630 remains attached to the end of the first reference tube 200.

[0154] After the first gear 520 and the second gear 530 continue to rotate 90°, the drive assembly enters... Figure 3 The state shown indicates that the drive component has returned to its initial state. Correspondingly, piston 300 is in... Figure 13 As shown in the diagram, partition 630 will begin to fall back along the guide rail.

[0155] As the actuator continues to operate, piston 300 moves closer to filter plate 400. Under hydraulic pressure, the one-way valve at the connecting hole 320 closes, and piston 300 pushes the insulating oil for filtration. Baffle 630 is accelerated and pushed to the bottom of guide rod 610. In this way, circulation is achieved.

[0156] Through the above design, the control of the insulating oil flow is realized by the cooperation of the lever 410, the one-way valve of the communication hole 320, the control lever 330 and the partition plate 630, and the risk of the filter plate 400 being blocked is further reduced.

[0157] Further, please combine Figures 14-16 , the cleaning piece 220 is a cover body, the cleaning piece 220 is covered on the filter plate 400, and a space is formed between the cleaning piece 220 and the filter plate 400.

[0158] One side of the cleaning piece 220 is provided with an opening 221 in communication with the internal space thereof. Specifically, when the filter plate 400 is driven to rotate by the piston 300, the insulating oil will also be stirred, so that the insulating oil flows along the circumference of the first reference tube 200. Along the flow direction of the insulating oil in the circumference of the first reference tube 200 (such as the K4 direction shown in Figure 16 . Figure 16

[0159] The opening 221 is formed by the edge of the cleaning piece 220 close to the filter plate 400 extending to the inside thereof, and the opening 221 also extends to the side away from the central axis of the first reference tube 200.

[0160] The cleaning piece 220 is spaced apart from the support rod 420, and the cleaning piece 220 is provided with a plate body 222 for closing the opening 221. The side edge of the plate body 222 close to the support rod 420 is hinged to the side edge of the opening 221 close to the support rod 420, and the plate body 222 is located on the inside of the cleaning piece 220.

[0161] The rotation axis of the plate body 222 is parallel to the central axis of the first reference tube 200, and the plate body 222 is provided with a torsion spring (not shown in the figure) so that in the natural state, the end of the plate body 222 away from the hinged end is attached to the inner wall of the cleaning piece 220, as shown in Figure 16 .

[0162] The side wall of the cleaning piece 220 away from the opening 221 is made of a mesh plate, and the mesh hole diameter of the mesh plate is less than or equal to the filter hole diameter of the filter plate 400.

[0163] The filter plate 400 is provided with a mounting hole arranged in the axial direction of the first reference tube 200, and the mounting hole includes a first hole section 440, a second hole section 450 and a third hole section 460 connected in sequence. The first hole section 440 is located on the side of the filter plate 400 close to the piston 300. The hole diameters of the first hole section 440 and the third hole section 460 are both smaller than the hole diameter of the second hole section 450.

[0164] ​A mating post 470 is slidably fitted within the mounting hole, and the diameter of the mating post 470 matches the diameter of the first hole section 440. An end block 480 is fixedly connected to one end of the mating post 470 near the second hole section 450. The diameter of the end block 480 is larger than the diameter of the first hole section 440, and the end block 480 is located within the second hole section 450. Along the axial direction of the mounting hole, the mating post 470 is slidably fitted within the first hole section 440, and the end block 480 is slidably fitted within the second hole section 450.

[0165] The mating post 470 is fitted with a second elastic member 490. The second elastic member 490 abuts against the end wall of the second hole section 450 near the third hole section 460 and the end block 480, so that in the natural state, the second elastic member 490 pushes the mating post 470 to extend to the side of the filter plate 400 near the piston 300, and makes the end block 480 fit against the end wall of the second hole section 450 near the first hole section 440.

[0166] The exposed portion of the mating column 470 is hemispherical and smoothed.

[0167] When the filter plate 400 rotates, the mating post 470 can contact the end of the plate body 222 away from the support rod 420. When the mating post 470 contacts the plate body 222, it can push the plate body 222 into the cleaning element 220, thereby opening the opening 221. Figure 17 As shown. In this way, impurities located near the filter plate 400 can smoothly enter the cleaning component 220 and be collected by the cleaning component 220.

[0168] As the filter plate 400 continues to rotate, the cooperating column 470 causes the opening of the plate 222 to increase, eventually "passing over" the plate 222 from its free end, as... Figure 18 As shown. At this time, the plate 222 begins to reset under the action of the torsion spring, but because the insulating oil will continue to impact the plate 222, the reset speed of the plate 222 will be further reduced, which is more conducive to the impurities near the filter plate 400 entering the cleaning component 220 more fully.

[0169] As the filter plate 400 continues to rotate, the mating post 470 will contact the side wall of the cleaning component 220 (cover) away from the opening 221. This side wall can push the exposed part of the mating post 470 into the mounting hole (the second elastic element 490 is compressed), so that the mating post 470 can smoothly avoid this side wall, allowing the filter plate 400 to rotate smoothly.

[0170] With the above design, the column 470 can intermittently push the plate 222 to open the opening 221, allowing the cleaning component 220 to collect impurities more fully.

[0171] When the filter plate 400 is no longer rotating, the plate body 222 will be fully reset under the action of the torsional spring, thereby closing the opening 221 to prevent impurities from re-leaving the cleaning element 220, which can more effectively ensure the filtering efficiency of other parts of the filter plate 400.

[0172] Correspondingly, at this time, the visual assembly can be arranged inside the cleaning element 220.

[0173] It should be noted that when the filter plate 400 rotates relative to the first reference tube 200, the rotation is damped, so that after the cooperating rod 410 is separated from the piston 300, the filter plate 400 can immediately stop rotating, thereby ensuring the accuracy of the cooperation between the cooperating rod 410 and the cooperating hole 310 next time.

[0174] It should be noted that, in the process of moving the driving assembly from the state shown in Figure 7 to the state shown in Figure 12 , the filter plate 400 is driven by the piston 300, and in the entire process, the filter plate 400 is unidirectionally driven by the piston 300 along the K4 direction, thereby ensuring the stability of the collection of impurities by the cleaning element 220.

[0175] Further optionally, the first reference tube 200 can also be connected to a residue discharge pipe 223, the residue discharge pipe 223 being connected to the side wall of the first reference tube 200 and penetrating through the side wall of the first reference tube 200, the residue discharge pipe 223 being in communication with the internal space of the cleaning element 220, and the residue discharge pipe 223 being provided with a control valve (not shown in the figure).

[0176] When it is observed through the visual assembly that there are many impurities in the cleaning element 220, the control valve can be briefly opened, so that the impurities in the cleaning element 220 are flushed out by the insulating oil.

[0177] It should be noted that the top end (the end away from the piston 300) of the plug rod 340 can be connected to an adapter pipe 700, the adapter pipe 700 being coaxially arranged with the plug rod 340, the adapter pipe 700 being rotationally matched with and rotationally sealed with the plug rod 340, the adapter pipe 700 being in communication with the conveying flow channel 341, and the adapter pipe 700 being arranged coaxially with the rotation axis of the plug rod 340 and the rotation axis of the plug rod 340 relative to the first reference tube 200. The adapter pipe 700 is in communication with the top end of the oil tank through a flexible connecting pipe. In the process of rotating the plug rod 340, the plug rod 340 can rotate relative to the adapter pipe 700, thereby avoiding the flexible connecting pipe from being knotted or damaged.

[0178] In summary, the self-monitoring transformer provided by the embodiments of the present application can continuously and autonomously monitor the actual condition of the transformer insulating oil, thereby avoiding the drawbacks of manual monitoring and effectively improving the operation safety of the transformer.

[0179] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-monitoring transformer, characterized in that, include: Transformer body and monitoring mechanism; The monitoring mechanism includes: a first reference tube, a piston, a stopcock, a filter plate, a vision component, and a processor; One end of the first reference tube is sealed by a sealing plate; the piston is fitted into the first reference tube, and the plug rod is connected to the side of the piston near the sealing plate, and the plug rod passes through the sealing plate; The filter plate is disposed inside the first reference tube, and the filter plate is located on the side of the piston away from the piston rod; A conveying channel is provided on the end face of the stopper rod away from the piston. The conveying channel extends along the stopper rod and extends to the piston. The area between the piston and the filter plate is in communication with the conveying channel. The end of the conveying channel away from the piston is connected to the top of the oil tank of the transformer body, and the end of the first reference tube away from the sealing plate is connected to the bottom of the oil tank of the transformer body. The conveying channel is provided with a first one-way component so that the insulating oil in the conveying channel can only flow to the area between the piston and the filter plate; The first reference tube is provided with a second one-way component at the end away from the sealing plate, so that the insulating oil in the first reference tube can only flow out from the end of the first reference tube away from the sealing plate; The piston rod is reciprocated by a drive assembly; The vision component is disposed inside the first reference tube, and the vision component is located on the side of the filter plate near the piston and is disposed close to the filter plate; The vision component is electrically connected to the processor, and the processor is used to determine the health of the insulating oil in the transformer body based on the image data acquired by the vision component.

2. The self-monitoring transformer according to claim 1, characterized in that, The drive assembly drives the piston rod to reciprocate along the axial direction of the first reference tube while also driving the piston rod to rotate. The piston has a mating hole on the side near the filter plate, and the mating hole extends along the axial direction of the first reference tube. The filter plate is rotatably fitted to the first reference tube, and a fitting rod is connected to the side of the filter plate near the piston. The fitting rod extends along the axial direction of the first reference tube. Along the axial direction of the first reference tube, the fitting rod slides with the fitting hole. A cleaning component is fixedly connected to the inner wall of the first reference tube. The cleaning component is located on the side of the filter plate near the piston and is in contact with the filter plate.

3. The self-monitoring transformer according to claim 2, characterized in that, The drive assembly includes: a driver, a first gear, a second gear, and a transmission rack; The first gear and the second gear are spaced apart and their rotation axes are parallel. The power output section of the driver is connected to a drive gear, which engages between the first gear and the second gear, and both the first gear and the second gear mesh with the drive gear. The rotational axes of the drive gear, the first gear, and the second gear are located in the same plane, and this plane is perpendicular to the piston rod. One end of the transmission rack is eccentrically hinged to the side wall of the first gear, and the other end is eccentrically hinged to the side wall of the second gear. The transmission rack is arranged perpendicular to the plug rod. The outer side wall of the plug rod has a first annular flange and a second annular flange spaced apart, and the outer side wall of the plug rod also has an external toothed ring, which is located between the first annular flange and the second annular flange; The transmission rack is fitted between the first annular flange and the second annular flange, and the transmission rack meshes with the outer gear ring.

4. The self-monitoring transformer according to claim 3, characterized in that, The mating hole and the conveying channel are connected by a connecting hole, and the first unidirectional component is disposed in the connecting hole; A support rod is connected to the side of the filter plate near the piston. The support rod is coaxially arranged with the filter plate. A support plate is coaxially connected to the end of the support rod away from the filter plate. The mating rod is installed on the support plate. The support plate has a clearance hole on the side near the piston. The clearance hole is coaxial with the filter plate and extends along the axial direction of the first reference tube and passes through the support rod and the filter plate in sequence. A control rod is connected to the side of the piston near the filter plate. The control rod extends along the axial direction of the first reference tube and fits into the clearance hole. The control lever has an inner cavity, and the inner sidewall of the inner cavity has a notch that penetrates the sidewall of the control lever. A sliding block is accommodated in the notch. A first elastic element is fitted to the side of the sliding block near the inner cavity, and the end of the first elastic element away from the sliding block abuts against the inner cavity. The end of the first reference tube away from the sealing plate is connected to a second reference tube, and the inner diameter of the first reference tube is smaller than that of the second reference tube; The second unidirectional component includes: a guide rod and a partition; The guide rod is connected to the end face of the first reference tube near the second reference tube. The guide rod extends along the axial direction of the first reference tube, and a stop is connected to the end of the guide rod away from the first reference tube. The partition is located inside the second reference tube, and the guide rod passes through the partition; the partition is slidably fitted to the guide rod along the axial direction of the guide rod. The partition plate has an opening for the control rod to pass through; When the piston moves toward the filter plate, when the mating rod extends into the mating hole and contacts the first one-way component, the mating rod can prevent the first one-way component from opening. When the piston moves toward the filter plate, when the distance between the piston and the filter plate reaches a minimum value, the control rod passes through the opening, and the sliding block is located on the side of the filter plate away from the piston. When the piston moves away from the filter plate, the control rod separates from the filter plate after the mating rod separates from the first one-way assembly.

5. The self-monitoring transformer according to claim 4, characterized in that, The opening is provided with a valve, and when the control rod passes through the opening, the control rod pushes the valve open; When the piston moves away from the filter plate, the valve closes when the control rod separates from the filter plate.

6. The self-monitoring transformer according to claim 4, characterized in that, The cleaning component is a cover, which covers the filter plate; The cleaning component has an opening on one side that communicates with its internal space. The opening is formed by the edge of the cleaning component near the filter plate extending inward. The cleaning component is fitted with a plate for closing the opening, the edge of the plate near the support rod is hinged to the edge of the opening near the support rod, and the plate is located inside the cleaning component; The rotation axis of the plate is parallel to the central axis of the first reference tube. The plate is equipped with a torsion spring so that, in its natural state, the end of the plate away from its hinge end is attached to the inner wall of the cleaning component. The sidewall of the cleaning component away from the opening is made of a mesh plate, the mesh aperture of which is smaller than or equal to the filter aperture of the filter plate. The filter plate has an installation hole arranged along the axial direction of the first reference tube. A mating post is slidably fitted in the installation hole. The mating post is fitted with a second elastic element so that, in its natural state, part of the mating post extends to the side of the filter plate near the piston. When the mating post contacts the plate, the mating post pushes the plate toward the cleaning component to open the opening; When the mating post contacts the side wall of the cleaning component away from the opening, the cleaning component pushes the mating post into the mounting hole.

7. The self-monitoring transformer according to claim 6, characterized in that, The first reference tube is also connected to a slag discharge pipe, which communicates with the internal space of the cleaning component, and the slag discharge pipe is equipped with a control valve.

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