Winding insulation resistance rapid testing device for transformer maintenance

Abstract

The application provides a winding insulation resistance rapid testing device for transformer maintenance, relates to the technical field of winding insulation resistance testing and comprises a transformer body, three battery posts are fixed equidistantly on the top of the transformer body, an installation assembly is arranged on the outer side of the battery posts on the top of the transformer body, a clamping assembly is arranged on the surface of the installation assembly, and a positioning assembly is arranged at the bottom of the clamping assembly; the installation assembly comprises a bottom plate, the bottom plate is placed on the top of the side edge of the transformer body, a vertical frame is fixed to the middle top of the bottom plate, and a sliding seat is slidably connected to the inside of the vertical frame; the clamping assembly comprises a horizontal frame, the side of the sliding seat, which faces the battery post, is fixed with the horizontal frame, the clamping assembly can be quickly positioned through the positioning assembly, the connection between the clamping assembly and the battery post is completed, the testing efficiency of the whole winding insulation resistance is improved, and the stability during the testing and adjustment process is maintained through the installation assembly.

Description

Technical Field

[0001] This disclosure relates to the field of winding insulation resistance testing technology, and in particular to a rapid testing device for winding insulation resistance used in transformer maintenance. Background Technology

[0002] The purpose of the insulation resistance test is to detect the overall insulation level of the winding insulation layer and determine whether there is moisture, aging, or partial discharge. The test uses a 2500V / 5000V megohmmeter to measure the insulation resistance between the winding and ground, and between windings. The purpose of the test is to identify defects such as inter-turn short circuits and poor contact in the tap changer. The test method uses a DC resistance tester, applying a DC current of ≥10A (this can be appropriately reduced for capacities ≤1000kVA), and measuring the resistance of each winding. The judgment criteria require that the phase-to-phase resistance difference ≤2% of the average value, and the line-to-line resistance difference ≤1% of the average value; compared with historical data (converted to the same temperature), a change rate ≤2% is considered normal. The test results can be used to diagnose specific faults such as tap changer contact oxidation and poor contact.

[0003] In existing technologies, testing requires manual clamping of the tester's clamps onto the top of the transformer windings, typically using two wires for connection. This manual operation and retraction process leads to low efficiency and makes it difficult to quickly complete the clamping and subsequent testing. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a rapid testing device for winding insulation resistance for transformer maintenance.

[0006] To achieve the above objectives, this disclosure provides a rapid testing device for winding insulation resistance of transformers, comprising: a transformer body, three battery terminals equidistantly fixed to the top of the transformer body, an installation assembly located on the outer side of the battery terminals on the top of the transformer body, a clamping assembly mounted on the surface of the installation assembly, and a positioning assembly at the bottom of the clamping assembly; the installation assembly includes a base plate placed on the top side of the transformer body, a vertical frame fixed to the top center of the base plate, and a slide block slidably connected inside the vertical frame; the clamping assembly includes a horizontal frame, a horizontal frame fixed to the side of the slide block facing the battery terminals, and two sliding plates symmetrically slidably connected inside the horizontal frame, two clamps symmetrically provided on the outer side of the sliding plates, the two clamps being rotatably connected at one end facing the sliding plates via a rotating shaft; the positioning assembly includes a triangular plate, the two inclined surfaces of the triangular plate slidingly contacting the two battery terminals, and rollers provided on both sides of the triangular plate, the rollers slidingly contacting the outer surfaces of the battery terminals on both sides of the triangular plate.

[0007] Optionally, the mounting assembly further includes: an extension plate, a side plate, a first spring, and a second spring. Telescopic plates are slidably inserted into both ends of the base plate, and a side plate is fixed to the end of the extension plate away from the base plate. A third spring is fixed to the top of the retractable end of the telescopic plate, and the other end of the third spring is fixedly connected to the extended end of the telescopic plate. The two side plates are in contact with both sides of the transformer body. Two first springs are provided at the top of the extension plate, and both ends of the first springs are fixedly connected to the side plate and the base plate. A second spring is fixed to the bottom of the vertical frame, and the top of the second spring is fixedly connected to the slide block. Locking bolts are threaded into the top of both ends of the base plate, and the locking bolts are in contact with the extension plate.

[0008] Optionally, the clamping assembly further includes: a top plate, a pin, a fourth spring, and a contact pad. The pin is slidably inserted into the rotating shaft of the two clamps. The top of the pin is fixed with the top plate, and the bottom of the pin is fixed with the contact pad. The fourth spring is sleeved on the surface of the pin extending through the upper end of the clamp rotating shaft, and the top of the fourth spring is fixedly connected to the top plate.

[0009] Optionally, the two clamps are fixed with handles on one side facing the slide plate, and sliding sleeves are slidably fitted on the surfaces of the two handles. The top of the two sliding sleeves is provided with a sliding frame, and a slider is slidably connected inside the sliding frame corresponding to the position of the sliding sleeve; wherein, the bottom of the slider is rotatably connected to the top of the sliding sleeve through a rotating column.

[0010] Optionally, the top plate is symmetrically connected to two rotating plates at one end of the bottom of the sliding frame, and the other end of the rotating plates is rotatably connected to the slider via a rotating shaft; wherein, a fifth spring is fixed between the middle of the sliding frame and the two side sliders.

[0011] Optionally, the positioning component further includes: a fixing plate, a sixth spring, and an insert plate. The fixing plate is fixed to the bottom of the horizontal frame, and the insert plate is slidably inserted into one end of the triangular plate facing the fixing plate. The protruding end of the insert plate is fixedly connected to the fixing plate. The insert plate is provided with a sixth spring on both sides, and the two ends of the sixth spring are fixedly connected to the fixing plate and the triangular plate. The side of the triangular plate and the outer surface of the roller are provided with an insulating layer.

[0012] Optionally, the triangular plate is provided with wheel frames on both sides, and the wheel frames are rotatably mounted at the end of the wheel frame away from the fixed plate. The other end of the wheel frame is fixed with a strip, and the top of the triangular plate is fixed with a frame corresponding to the strip, and the strip is slidably inserted into the frame. A seventh spring is fixed between the end of the strip near the wheel frame and the triangular plate.

[0013] Optionally, the tops of the two wheel frames are rotatably connected to a first connecting rod, and the tops of the triangular plate are symmetrically rotatably connected to two second connecting rods. The first and second connecting rods on one side of the triangular plate are rotatably mounted at the bottom of the telescopic plate storage end via a pivot. The bottom of the telescopic plate is vertically slidably inserted with a connecting plate, and the tops of the first and second connecting rods are rotatably connected to the connecting plate via a pivot.

[0014] Optionally, an arc plate is fixed to one end of the top plate facing the top of the battery post, and the arc plate is in contact with the top of the battery post; wherein, after the arc plate contacts the top of the battery post, the two clamps just wrap around the outside of the top of the battery post.

[0015] Optionally, a resistance tester is fixed to the back of the vertical frame, a top cover is rotatably mounted on the top of the resistance tester, a plug-in terminal is provided on the back of the resistance tester, and a connecting wire is plugged into the surface of the plug-in terminal, and the connecting wire is fixedly connected to the tail ends of the four handles.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] 1. In this invention, the base plate is placed on one side of the top of the transformer body, and the two protruding plates are pulled out. The position of the battery terminals is tested as needed. The vertical frame and the base plate are moved to the middle of the two battery terminals. The side plates are pressed against the two sides of the transformer body. The length of the protruding plates is locked by locking bolts. The holding device is clamped and installed on the top of the transformer body. The slide is moved to the top of the vertical frame. Then, the clamping assembly and the positioning assembly are moved downward by the elastic force of the second spring. The clamping assembly stops moving after contacting the top of the battery terminal.

[0018] 2. In this invention, the spring force of the fourth spring on the outer surface of the insert and the spring force of the fifth spring inside the slide frame cause the insert to pass through the lower end of the rotating shaft when the clamp moves upward, driving the slider to move into the slide frame and turning the handle to open the clamp.

[0019] 3. When the triangular plate moves between the two battery terminals, the extended end of the telescopic plate also drives the clamp to move towards the top of the battery terminal. The arc plate of the top plate first contacts the top of the battery terminal. The telescopic plate keeps the clamp located on both sides of the top of the battery terminal through its telescopic properties. When the horizontal frame moves along the vertical frame, the clamp descends along the top of the battery terminal. After the contact pad at the bottom of the plug contacts the top of the battery terminal, the plug passes through the upper end of the clamp's rotating shaft, causing the top plate to move upward. At the same time, the two rotating plates on the top plate rotate, moving the slider along the sliding frame. This causes the sliding sleeve to slide along the handle and rotate the handle. After the two clamps rotate along the rotating shaft, they clamp the top of the battery terminal, thus connecting the battery terminal to the resistance tester and facilitating subsequent current and voltage testing.

[0020] 4. In this invention, a triangular plate is roughly positioned between two battery terminals to be connected, and pushed forward. As the inclined surfaces on both sides of the triangular plate are inserted between the two battery terminals, the rollers on both sides slide along the surface of the battery terminals, the insert slides out along the insertion frame, and the rollers move to the outside of the battery terminals. Then, the two battery terminals to be connected are inserted between the triangular plate, with rollers on both sides in contact. At the same time, when the first connecting rod on the wheel frame and the second connecting rod on the triangular plate rotate, the connecting plate moves vertically. When the first and second connecting rods rotate, the vertical movement of the connecting plate drives the telescopic plate and the sliding plate to move along the inside of the horizontal frame, thereby adjusting the position of the two clamps to correspond with the top of the battery terminals, which facilitates the subsequent clamping of the top of the battery terminals.

[0021] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the overall structure of a rapid testing device for winding insulation resistance of transformers for maintenance, as proposed in an embodiment of this disclosure.

[0024] Figure 2 This is a schematic diagram of the installation components in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of the structure at both ends of the base plate in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of the clamping component structure in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram showing the connection between the clamping component and the positioning component in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure.

[0028] Figure 6 This is a schematic diagram of the connection between the wheel frame and the triangular plate in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the connection between the insertion post and the top plate in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0030] Figure 8 This is a schematic diagram of the internal structure of the sliding frame in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure;

[0031] Figure 9 This is a schematic diagram of the contact between the triangular plate and roller and the battery terminal in a rapid testing device for winding insulation resistance of transformers according to an embodiment of this disclosure.

[0032] As shown in the figure: 1. Transformer body; 11. Battery terminal;

[0033] 2. Mounting components; 21. Base plate; 22. Extended plate; 23. Side plate; 24. First spring; 25. Vertical frame; 26. Locking bolt; 27. Second spring; 28. Slide;

[0034] 3. Resistance tester; 31. Top cover; 32. Plug-in terminal; 33. Connecting wire;

[0035] 4. Clamping assembly; 41. Horizontal frame; 42. Telescopic plate; 43. Third spring; 44. Slide plate; 45. Clamp; 46. Handle; 47. Sliding sleeve; 48. Sliding frame; 49. Slider; 410. Top plate; 411. Insert post; 412. Fourth spring; 413. Contact pad; 414. Rotating plate; 415. Arc plate; 416. Fifth spring;

[0036] 5. Positioning component; 51. Fixing plate; 52. Triangular plate; 53. Sixth spring; 54. Insert plate; 55. Wheel frame; 56. Roller; 57. Insert frame; 58. Insert strip; 59. Seventh spring; 510. First connecting rod; 511. Second connecting rod; 512. Connecting plate. Detailed Implementation

[0037] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown in the embodiment of this disclosure, a rapid testing device for winding insulation resistance of transformers for maintenance is proposed, comprising: a transformer body 1, three battery terminals 11 are equidistantly fixed on the top of the transformer body 1, a mounting assembly 2 is provided on the top of the transformer body 1 outside the battery terminals 11, a clamping assembly 4 is mounted on the surface of the mounting assembly 2, and a positioning assembly 5 is provided at the bottom of the clamping assembly 4; the mounting assembly 2 includes a base plate 21, the base plate 21 is placed on the top side of the transformer body 1, and a vertical frame 25 is fixed to the top center of the base plate 21, and the interior of the vertical frame 25 can slide. The device is connected to a slide block 28; the clamping assembly 4 includes a horizontal frame 41, which is fixed to the side of the slide block 28 facing the battery post 11. Two sliding plates 44 are symmetrically connected inside the horizontal frame 41. Two clamps 45 are symmetrically arranged on the outer side of each sliding plate 44, and the ends of the two clamps 45 facing the sliding plate 44 are rotatably connected via a rotating shaft. The positioning assembly 5 includes a triangular plate 52, whose two inclined surfaces slide in contact with the two battery posts 11. Rollers 56 are provided on both sides of the triangular plate 52, and the rollers 56 slide against the outer surfaces of the battery posts 11 on both sides of the triangular plate 52. The resistance tester 3 and clamp 45 of this device are based on existing technology. The entire device can be used to test the winding insulation resistance of transformers, rectifiers, and inductors manufactured for intelligent large-scale DC converter transformers, intelligent reactors, and other power distribution systems and facilities. It is used to detect the resistance value of newly manufactured transformers to ensure their normal operation. When using the device, the mounting assembly 2 is placed on top of the transformer body 1 and fixed. The positioning assembly 5 is moved between the two battery terminals 11 to be tested. The test is performed according to the triangle 52 and the roller... The movement of wheel 56 adjusts the position of the two sets of clamping components 4 so that they correspond to the top position of the battery post 11. The clamping components 4 move downward along the vertical frame 25 to contact the top of the battery post 11 and the clamp 45 clamps the top of the battery post 11. The resistance inside the battery post 11 is tested by the resistance tester 3 through the clamp 45 connected by the connecting wire 33. The positioning component 5 can quickly position the clamping components 4, thereby completing the connection between the clamping components 4 and the battery post 11, thereby improving the testing efficiency of the entire winding insulation resistance, and the stability during the testing and adjustment process is maintained by the mounting component 2.

[0039] like Figure 2 and Figure 3As shown, in some embodiments, the mounting assembly 2 further includes: an extension plate 22, a side plate 23, a first spring 24, and a second spring 27. Telescopic plates 42 are slidably inserted into both ends of the base plate 21, and a side plate 23 is fixed to one end of the extension plate 22 away from the base plate 21. A third spring 43 is fixed to the top of the retractable end of the telescopic plate 42, and the other end of the third spring 43 is fixedly connected to the extended end of the telescopic plate 42. The two side plates 23 are in contact with both sides of the transformer body 1. Two first springs 24 are provided on the top of the extension plate 22, and both ends of the first springs 24 are fixedly connected to the side plate 23 and the base plate 21. A second spring 27 is fixed to the bottom of the vertical frame 25, and the top of the second spring 27 is fixedly connected to the slide block 28. Locking bolts 26 are threaded into the top of both ends of the base plate 21, and the locking bolts 26 are in contact with the extension plate 22.

[0040] Understandably, the base plate 21 is placed on one side of the top of the transformer body 1, and the two side extension plates 22 are pulled out. The position of the battery terminals 11 is tested as needed. The vertical frame 25 and the base plate 21 are moved to the middle of the two battery terminals 11. The side plate 23 is pressed against the two sides of the transformer body 1. The length of the extension plate 22 is locked by the locking bolt 26. The holding device is clamped and installed on the top of the transformer body 1. The slide 28 is moved to the top of the vertical frame 25. Then, the clamping assembly 4 and the positioning assembly 5 are moved downward by the elastic force of the second spring 27. The clamp 45 assembly stops moving after contacting the top of the battery terminal 11.

[0041] like Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, in some embodiments, the clamping assembly 4 further includes: a top plate 410, a pin 411, a fourth spring 412, and a contact pad 413. The pin 411 is slidably inserted into the rotating shaft of the two clamps 45. The top plate 410 is fixed to the top of the pin 411, and the contact pad 413 is fixed to the bottom of the pin 411. The fourth spring 412 is sleeved on the surface of the pin 411 extending from the upper end of the rotating shaft of the clamp 45, and the top of the fourth spring 412 is fixedly connected to the top plate 410. A handle 46 is fixed to the side of the two clamps 45 facing the slide plate 44. Sliding sleeves 47 are slidably sleeved on the surfaces of the two handles 46. A sliding frame 48 is provided at the top of the two sliding sleeves 47, and a slider 49 is slidably connected inside the sliding frame 48 corresponding to the position of the sliding sleeve 47. The bottom of the slider 49 rotates with the top of the sliding sleeve 47 via a rotating pin. The top plate 410 is symmetrically connected to two rotating plates 414 at one end of the bottom of the sliding frame 48, and the other end of the rotating plate 414 is rotatably connected to the slider 49 via a rotating shaft; a fifth spring 416 is fixed between the middle of the sliding frame 48 and the two sliders 49 on both sides; an arc plate 415 is fixed to one end of the top plate 410 facing the top of the battery column 11, and the arc plate 415 is in contact with the top of the battery column 11; after the arc plate 415 contacts the top of the battery column 11, the two clamps 45 just wrap around the outside of the top of the battery column 11; a resistance tester 3 is fixed to the back of the vertical frame 25; a top cover 31 is rotatably installed on the top of the resistance tester 3; a plug-in end 32 is provided on the back of the resistance tester 3, and a connecting wire 33 is plugged into the surface of the plug-in end 32; the connecting wire 33 is fixedly connected to the tail ends of the four handles 46.

[0042] Understandably, when the triangular plate 52 moves towards the two battery terminals 11, the extended end of the telescopic plate 42 also drives the clamp 45 to move towards the top of the battery terminal 11. The arc plate 415 of the top plate 410 first contacts the top of the battery terminal 11. The telescopic plate 42 keeps the clamp 45 located on both sides of the top of the battery terminal 11. When the horizontal frame 41 moves along the vertical frame 25, the clamp 45 descends along the top of the battery terminal 11. After the contact pad 413 at the bottom of the insertion post 411 presses against the top of the battery terminal 11, the insertion post 411 passes through the upper end of the rotating shaft of the clamp 45, driving the top plate 410 to move upward. At the same time, the top plate 410... The two rotating plates 414 rotate, moving the slider 49 along the sliding frame 48. This causes the sliding sleeve 47 to slide along the handle 46, which in turn causes the handle 46 to rotate. This causes the two clamps 45 to rotate along the rotating shaft and clamp the clamps 45 onto the top of the battery terminal 11, thus connecting the battery terminal 11 to the resistance tester 3. This facilitates subsequent current and voltage testing. Through the elastic force of the fourth spring 412 on the outer surface of the plug 411 and the elastic force of the fifth spring 416 inside the sliding frame 48, when the clamps 45 move upward, the plug 411 passes through the lower end of the rotating shaft, causing the slider 49 to move into the sliding frame 48. This causes the handle 46 to rotate and open the clamps 45.

[0043] like Figure 5 , Figure 6 and Figure 9 As shown, in some embodiments, the positioning component 5 further includes: a fixing plate 51, a sixth spring 53, and an insert plate 54. The fixing plate 51 is fixed to the bottom of the horizontal frame 41, and the insert plate 54 is slidably inserted into one end of the triangular plate 52 facing the fixing plate 51, with the protruding end of the insert plate 54 fixedly connected to the fixing plate 51. The sixth spring 53 is provided on both sides of the insert plate 54, and the two ends of the sixth spring 53 are fixedly connected to the fixing plate 51 and the triangular plate 52. An insulating layer is provided on the side of the triangular plate 52 and the outer surface of the roller 56. Wheel frames 55 are provided on both sides of the triangular plate 52, and the wheel frames 55 are rotatably mounted at the end of the wheel frame 55 away from the fixing plate 51. The other end of the wheel frame 55 is fixed with an insert strip 58. The triangular plate 52 is fixed with a frame 57 at the top of the corresponding insert 58, and the insert 58 is slidably inserted into the frame 57. A seventh spring 59 is fixed between the end of the insert 58 near the wheel frame 55 and the triangular plate 52. The tops of the two wheel frames 55 are rotatably connected to a first connecting rod 510. The top of the triangular plate 52 is symmetrically rotatably connected to two second connecting rods 511. The first connecting rod 510 and the second connecting rod 511 on one side of the triangular plate 52 are rotatably installed at the bottom of the telescopic plate 42 storage end via a pivot. The bottom of the telescopic plate 42 is vertically slidably inserted with a connecting plate 512, and the tops of the first connecting rod 510 and the second connecting rod 511 are rotatably connected to the connecting plate 512 via a pivot.

[0044] It should be noted that, for the two battery terminals 11 to be connected, the triangular plate 52 is roughly positioned between the two battery terminals 11 and pushed forward. As the inclined surfaces on both sides of the triangular plate 52 insert between the two battery terminals 11, the rollers 56 on both sides slide along the surface of the battery terminals 11, the insert 58 slides out along the insert frame 57, and the rollers 56 move to the outside of the battery terminals 11. Then, the two battery terminals 11 to be connected are inserted into the middle of the triangular plate 52, with the rollers 56 on both sides in contact. At the same time, when the first connecting rod 510 on the wheel frame 55 and the second connecting rod 511 on the triangular plate 52 rotate, the connecting plate 512 moves vertically. Here, the connecting plate 512 and the telescopic plate 42 are retracted. The vertical insertion can be simply understood as follows: the connecting plate 512 is inserted into the inside or both sides of the storage end of the telescopic plate 42 through a conventional vertical plate. When the first link 510 and the second link 511 rotate, the vertical movement of the connecting plate 512 drives the telescopic plate 42 and the slide plate 44 to move along the inside of the horizontal frame 41, thereby adjusting the position of the two clamps 45 to correspond with the top of the battery post 11, which facilitates the subsequent clamping of the top of the battery post 11. The triangular plate 52 is connected to the fixed plate 51 through the insert plate 54, and the elastic recovery ability of the triangular plate 52 is maintained by the sixth spring 53. The insert bar 58 is connected to the insert frame 57 through the seventh spring 59. The wheel frame 55 can be retracted to both sides of the triangular plate 52.

[0045] Working principle:

[0046] When using the device, place the base plate 21 on one side of the top of the transformer body 1, pull out the two side extension plates 22, and test the position of the battery terminals 11 as needed. Move the vertical frame 25 and the base plate 21 to the middle of the two battery terminals 11, so that the side plates 23 are pressed against the two sides of the transformer body 1. Lock the extension length of the extension plates 22 with the locking bolts 26 to keep the device clamped and installed on the top of the transformer body 1. Move the slide block 28 to the top of the vertical frame 25, and then move the clamping assembly 4 and the positioning assembly 5 downward by the elastic force of the second spring 27. Stop moving after the clamp 45 assembly contacts the top of the battery terminal 11. Move the positioning assembly 5 between the two battery terminals 11 to be tested. Connect the two battery terminals 11 as needed, and then... The plate 52 is roughly positioned between the two battery posts 11 and is pushed forward. As the inclined surfaces on both sides of the triangular plate 52 insert between the two battery posts 11, the rollers 56 on both sides slide along the surface of the battery posts 11, the insert 58 slides out along the insert frame 57, and the rollers 56 move to the outside of the battery posts 11. Then, the two battery posts 11 that need to be connected are inserted between the triangular plate 52, with the rollers 56 on both sides in contact. At the same time, when the first connecting rod 510 on the wheel frame 55 and the second connecting rod 511 on the triangular plate 52 rotate, the connecting plate 512 is driven to move vertically. Here, the vertical insertion of the connecting plate 512 into the storage end of the telescopic plate 42 can be simply understood as the connecting plate 512 being inserted into the inside or both sides of the storage end of the telescopic plate 42 through a conventional vertical plate. When the first link 510 and the second link 511 rotate, the vertical movement of the connecting plate 512 drives the telescopic plate 42 and the sliding plate 44 to move along the inside of the horizontal frame 41, thereby adjusting the position of the two clamps 45 to correspond with the top of the battery post 11, facilitating subsequent clamping of the top of the battery post 11. The triangular plate 52 is connected to the fixed plate 51 through the insert plate 54, and the elastic recovery ability of the triangular plate 52 is maintained by the sixth spring 53. The insert bar 58 is connected to the insert frame 57 through the seventh spring 59. The wheel frame 55 can be retracted to both sides of the triangular plate 52. When the triangular plate 52 moves towards the two battery posts 11, the extended end of the telescopic plate 42 also drives the clamps 45 to move towards the top of the battery post 11. The arc plate 415 of the top plate 410 first contacts the top of the battery post 11. The clamps 45 are held in place on both sides of the top of the battery post 11 by the telescopic plate 42. As the horizontal frame 41 moves along the vertical frame 25, the clamps 45 descend along the top of the battery post 11. After the contact pad 413 at the bottom of the insertion post 411 presses into contact with the top of the battery post 11, the insertion post 411 passes through the upper end of the rotating shaft of the clamps 45, causing the top plate 410 to move upward. At the same time, the two rotating plates 414 on the top plate 410 rotate, moving the slider 49 along the sliding frame 48. This causes the sliding sleeve 47 to slide along the handle 46, while simultaneously rotating the handle 46. This causes the two clamps 45 to rotate along the rotating shaft, clamping the clamps 45 on the top of the battery post 11, thus connecting the battery post 11 to the resistance tester 3, facilitating subsequent current and voltage testing.Through the elastic force of the fourth spring 412 on the outer surface of the insert 411 and the elastic force of the fifth spring 416 inside the slide frame 48, when the clamp 45 moves upward, the insert 411 passes through the lower end of the rotating shaft, driving the slider 49 to move into the slide frame 48. The handle 46 is then rotated to open the clamp 45. The resistance inside the battery terminal 11 is then tested by the resistance tester 3 connected to the clamp 45 via the connecting wire 33. The positioning component 5 quickly positions the clamping component 4, thus completing the connection between the clamping component 4 and the battery terminal 11, thereby improving the testing efficiency of the entire winding insulation resistance. Furthermore, the installation component 2 maintains stability during the testing and adjustment process.

[0047] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0048] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A rapid testing device for winding insulation resistance in transformer maintenance, characterized in that, include: The transformer body (1) has three battery posts (11) fixed at equal intervals on its top. The top of the transformer body (1) is provided with an installation component (2) located on the outside of the battery posts (11). A clamping component (4) is installed on the surface of the installation component (2). A positioning component (5) is provided at the bottom of the clamping component (4). The mounting assembly (2) includes a base plate (21), which is placed on the top side of the transformer body (1). A vertical frame (25) is fixed to the top middle of the base plate (21), and a slide block (28) is slidably connected inside the vertical frame (25). The clamping assembly (4) includes a horizontal frame (41). The slide block (28) is fixed with the horizontal frame (41) on the side facing the battery post (11). The horizontal frame (41) has two sliding plates (44) symmetrically connected inside. The sliding plates (44) have two clamps (45) symmetrically arranged on the outside. The two clamps (45) are rotatably connected at one end facing the sliding plate (44) through a rotating shaft. The positioning component (5) includes a triangular plate (52), the two inclined surfaces of the triangular plate (52) are in sliding contact with two battery posts (11), and rollers (56) are provided on both sides of the triangular plate (52), the rollers (56) are in sliding contact with the outer surfaces of the battery posts (11) on both sides of the triangular plate (52).

2. The rapid testing device for winding insulation resistance of transformers according to claim 1, characterized in that, The installation component (2) also includes: The base plate (21) has a telescopic plate (42) slidably inserted at both ends, and a side plate (23) is fixed at one end of the extension plate (22) away from the base plate (21). A third spring (43) is fixed at the top of the retractable end of the telescopic plate (42), and the other end of the third spring (43) is fixedly connected to the extended end of the telescopic plate (42). The two side plates (23) are pressed against the two sides of the transformer body (1). The top of the extension plate (22) is provided with two first springs (24), and the two ends of the first springs (24) are fixedly connected to the side plate (23) and the base plate (21). The bottom of the vertical frame (25) is fixed with a second spring (27), and the top of the second spring (27) is fixedly connected to the slide (28). Among them, the bottom plate (21) has locking bolts (26) threaded into the top of both ends, and the locking bolts (26) are pressed into contact with the protruding plate (22).

3. The rapid testing device for winding insulation resistance of transformers according to claim 2, characterized in that, The clamping assembly (4) further includes: Top plate (410), insert post (411), fourth spring (412), contact pad (413), insert post (411) is slidably inserted into the rotating shaft of the two clamps (45), top plate (410) is fixed to the top of the insert post (411), and contact pad (413) is fixed to the bottom of the insert post (411). The insert (411) extends through the upper end of the rotating shaft of the clamp (45) and is fitted with a fourth spring (412), and the top of the fourth spring (412) is fixedly connected to the top plate (410).

4. The rapid testing device for winding insulation resistance of transformers according to claim 3, characterized in that, Two clamps (45) are fixed with handles (46) on one side facing the slide plate (44). Sliding sleeves (47) are slidably sleeved on the surface of the two handles (46). A sliding frame (48) is provided on the top of the two sliding sleeves (47), and a slider (49) is slidably connected inside the sliding frame (48) corresponding to the position of the sliding sleeve (47). The bottom of the slider (49) is rotatably connected to the top of the sleeve (47) via a rotating column.

5. The rapid testing device for winding insulation resistance of transformers according to claim 4, characterized in that, The top plate (410) is symmetrically connected to two rotating plates (414) at one end of the bottom of the sliding frame (48), and the other end of the rotating plate (414) is rotatably connected to the slider (49) through a rotating shaft; A fifth spring (416) is fixed between the middle of the sliding frame (48) and the two side sliders (49).

6. The rapid testing device for winding insulation resistance of transformers according to claim 5, characterized in that, The positioning component (5) further includes: The fixed plate (51), the sixth spring (53), and the insert plate (54) are fixed at the bottom of the horizontal frame (41), and the insert plate (54) is slidably inserted into one end of the triangular plate (52) facing the fixed plate (51), and the protruding end of the insert plate (54) is fixedly connected to the fixed plate (51). The insert plate (54) is provided with a sixth spring (53) on both sides, and the two ends of the sixth spring (53) are fixedly connected to the fixed plate (51) and the triangular plate (52). The side of the triangular plate (52) and the outer surface of the roller (56) are provided with an insulating layer.

7. The rapid testing device for winding insulation resistance of transformers according to claim 6, characterized in that, The triangular plate (52) is provided with wheel frames (55) on both sides, and the wheel frames (55) are rotatably installed at one end of the wheel frame (55) away from the fixed plate (51). The other end of the wheel frame (55) is fixed with a strip (58). The triangular plate (52) is fixed with a frame (57) corresponding to the top of the strip (58), and the strip (58) is slidably inserted into the inside of the frame (57). Among them, a seventh spring (59) is fixed between the end of the insert (58) near the wheel frame (55) and the triangular plate (52).

8. The rapid testing device for winding insulation resistance of transformers according to claim 7, characterized in that, The top of the two wheel frames (55) is rotatably connected to a first link (510), and the top of the triangular plate (52) is symmetrically rotatably connected to two second links (511). The bottom of the telescopic plate (42) is vertically slidably connected to a connecting plate (512), and the tops of the first connecting rod (510) and the second connecting rod (511) are rotatably connected to the connecting plate (512) through a rotating shaft.

9. The rapid testing device for winding insulation resistance of transformers according to claim 3, characterized in that, An arc plate (415) is fixed to one end of the top plate (410) facing the top of the battery post (11), and the arc plate (415) is in contact with the top of the battery post (11). Wherein, after the arc plate (415) contacts the top of the battery post (11), the two clamps (45) just wrap around the outside of the top of the battery post (11).

10. The rapid testing device for winding insulation resistance of transformers according to claim 4, characterized in that: A resistance tester (3) is fixed on the back of the vertical frame (25). A top cover (31) is rotatably installed on the top of the resistance tester (3). A plug-in end (32) is provided on the back of the resistance tester (3), and a connecting wire (33) is plugged into the surface of the plug-in end (32). The connecting wire (33) is fixedly connected to the tail ends of the four handles (46).

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