Ring main unit partial discharge detection device

Abstract

The invention provides a ring main unit partial discharge detection device, and belongs to the technical field of partial discharge detection, the ring main unit partial discharge detection device comprises a detection probe, the lower end of the detection probe is fixedly connected with a rectangular rod, the outer side of the rectangular rod is movably provided with a rectangular pipe, and the upper end of the rectangular pipe is provided with a driving module; and the driving module comprises a shell connected to the rectangular pipe, a linkage piece fixedly connected to the upper end of the rectangular rod, a driven bearing unit, a maintenance unit and a liquid drainage control unit, one side of the shell is fixedly connected with a motor, a rotating rod is rotationally connected to the inner side of the shell, and a rotating disc is installed on the outer side of the rotating rod. The problems that an existing ring main unit partial discharge detection device adopts a dual-drive structure, the production cost is improved, the production difficulty is also improved, a corresponding maintenance structure is not provided, self-maintenance cannot be carried out on a drive structure, and the overhaul and maintenance period of the drive structure is greatly shortened are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of partial discharge detection, and in particular relates to a partial discharge detection device for a ring main unit. Background Art

[0002] Partial discharge detection of ring main unit is an important part of ensuring the safe operation of power system. Partial discharge refers to the local discharge phenomenon in the insulating medium of electrical equipment. If this phenomenon is not discovered and handled in time, it may cause equipment damage or even cause safety accidents. At present, the main partial discharge detection methods used are ultra-high frequency (UHF), transient earth voltage (TEV), ultrasonic (ULT) and current pulse method. It has high sensitivity and accuracy and has been widely used.

[0003] Prior art CN118275839B discloses a partial discharge detection device for a ring main unit described in the present invention, comprising a detection probe and an extension unit; the detection probe is mounted on the extension unit; the extension unit can push the detection probe between adjacent ring main units, and the extension unit comprises a fixed component and a movable component; the fixed component comprises a rectangular tube, through holes are symmetrically provided on both sides of one end of the rectangular tube, a driving structure is arranged at the position of the through hole, and the driving structure controls the movement of the movable component; the driving structure comprises a gear, the gear is rotatably connected in the through hole, a rack is meshed on the inner side of the gear, and the rack is mounted on the movable component; the movable component comprises a rectangular rod slidably connected in the rectangular tube, the two sides of the rectangular rod are fixedly connected with the rack, and the upper surface of one end of the rectangular rod is fixedly connected with the detection probe. During the detection, the device controls the movement of the movable component through the dual drive structure, so that the rectangular rod extends out of the rectangular rod, so as to realize the mobile detection of the ring main unit. The dual drive structure not only increases the production cost, but also increases the production difficulty, and there is no corresponding maintenance structure, so that the drive structure cannot be self-maintained, which greatly shortens the inspection and maintenance cycle of the drive structure. Summary of the invention

[0004] The present invention provides a local discharge detection device for a ring main unit, which aims to solve the problem that the existing local discharge detection device for a ring main unit adopts a dual drive structure, which not only increases the production cost, but also increases the production difficulty, and has no corresponding maintenance structure, so that the drive structure cannot be self-maintained, which greatly shortens the inspection and maintenance cycle of the drive structure.

[0005] The embodiment of the present invention provides a partial discharge detection device for a ring main unit, comprising a detection probe, the lower end of the detection probe is fixedly connected to a rectangular rod, a rectangular tube is movably arranged outside the rectangular rod, a driving module is arranged at the upper end of the rectangular tube, a rotating rod is screwed to the front end of the rectangular tube, a limiting module 1 is arranged at the upper end of the rotating rod, a front end support module is screwed to the cavity at the lower end of the rectangular rod, and a limiting module 2 is arranged on the side of the front end support module; The driving module includes a shell connected to the rectangular tube, a linkage plate fixed to the upper end of the rectangular rod, a driven bearing unit, a maintenance unit and a liquid discharge control unit. One side of the shell is fixed to the motor, the inner side of the shell is screwed to the rotating rod, and the outer side of the rotating rod is provided with a rotating disk. A plurality of teeth are reserved on the upper wall surface of the linkage plate and the outer peripheral surface of the rotating disk, and the teeth are engaged with each other. The driven bearing unit includes a groove one, and a groove one is reserved in the middle of each side of the linkage plate. A pair of retaining frames are connected to the two sides of the rotating disk, and the lower ends of the pair of retaining frames are movably connected to the corresponding groove one via a pair of variable bearing parts. The maintenance unit includes a liquid storage tank, which is installed at a high position of the rotating disk, and the middle of the lower end of the liquid storage tank is connected to a drainage channel; The lower end of the liquid discharge control unit is arranged in a pair of retaining frames, and the upper end of the liquid discharge control unit extends into the liquid storage tank; The liquid discharge control unit includes a wedge block and a return part. The two sides of the rotating disk are respectively fixedly connected to the wedge block via a tensioning screw four. A circular opening for fitting the rotating rod is reserved on the wedge block. A variable bar is movably installed on the upper end of each retaining frame. The lower end of the variable bar passes through the upper end of the retaining frame and is fixedly connected to a supporting plate. The lower end of the supporting plate touches the upper end of the corresponding wedge block. A return part is installed between the supporting plate and the upper end of the corresponding retaining frame. The upper ends of a pair of variable bars are respectively movably connected to the lower end of the liquid storage tank. The upper ends of a pair of variable bars are fixedly connected to a blocking block. The center of the blocking block is located at the upper end of the liquid discharge channel.

[0006] Furthermore, the return portion includes a spiral beryllium copper wire, and the two ends of the upper end of the support plate are fixedly connected to a pair of spiral beryllium copper wires, and the upper ends of the pair of spiral beryllium copper wires are respectively fixedly connected to the upper ends of the corresponding retaining frames.

[0007] Furthermore, the maintenance unit also includes a diverter part and an adjusting part, the lower end of the drainage channel is fixedly connected to the upper end of the diverter part, and both sides of the diverter part are connected to the lower end of the liquid storage tank via the adjusting part.

[0008] Furthermore, the driving module also includes a liquid discharge and compression unit, the lower end of which is arranged on one side of the rotating rod, and the upper end of which is arranged on one side of the liquid storage tank.

[0009] Furthermore, the liquid discharge and compression unit includes a rubber tube, a compression linkage part and a compression strength adjustment part. The center of one side of the liquid storage tank is fixedly connected to the assembly table, the lower end of the assembly table is fixedly connected to the rubber tube, the upper end of the rubber tube is connected to the connecting channel, one side of the upper end of the liquid storage tank is connected to the air injection channel, the other end of the air injection channel is connected to the other end of the connecting channel, the compression linkage part is installed at the lower end of one side of the liquid storage tank, and the compression strength adjustment part is installed on one side of the rotating rod.

[0010] Furthermore, the compression linkage part includes a square bar and a compression platform. One side of the liquid storage tank is fixedly connected to the constraint block, and the square bar is movably installed in the constraint block. The upper end of the square bar is fixedly connected to the compression platform, and the compression platform is located under the rubber tube. The lower end of the square bar is fixedly connected to the concave seat, and the disc is screwed in the concave seat. The outer surface of the square bar between the constraint block and the concave seat is clamped with a spiral beryllium copper wire.

[0011] Furthermore, the compression strength adjustment part includes two wedge blocks and two screw rods, a connection port is reserved in the middle of one side of the rotating rod, and two grooves are reserved on the upper end of one side of the rotating rod along the central axis of the rotating rod. One side of the rotating rod is connected to a hoop tube, and the inside of the hoop tube is fixedly connected to a variable platform two, and the variable platform two and the groove two are movably connected. The lower end of the variable platform two is fixedly connected to a thread mouth tube in the middle of the connection port, and the connection port is screwed with two screw rods, and the two screw rods are threadedly connected to the thread mouth tube. The outer circumference of the hoop tube is fixedly connected to three wedge blocks two at equal intervals, and the tips of the three wedge blocks two and the tip of the wedge block one are all facing the same direction, and the tips of the three wedge blocks two increase in size from the inside to the outside, and the upper end of one of the wedge blocks two touches the lower end of the disc.

[0012] Furthermore, the driving module further comprises a liquid recovery unit, and the liquid recovery unit is arranged on the side wall of the linkage piece; The liquid recovery unit includes a receiving plate and a liquid recovery and discharge part. The two sides of the linkage plate are fixedly connected to the receiving plate at the upper end of one side wall of the groove. The upper end of the receiving plate, which is farther from the groove, and the two ends of the upper end of the receiving plate are fixedly connected to protruding plates, and the lower ends of the two ends of the linkage plate are respectively provided with liquid recovery and discharge parts.

[0013] Furthermore, the front end of the rectangular tube is screwed to the rotating rod, and a limit module 1 is installed on the upper end of the rotating rod. The limit module 1 includes a mounting groove 1 reserved on the side of the rectangular tube and an L-shaped rod fixedly connected to the side of the rectangular tube. A spiral beryllium copper wire 4 is fixedly connected to the mounting groove 1, and the other end of the spiral beryllium copper wire 4 is fixedly connected to a limit block 1. One end of the limit block 1 slides out of the mounting groove 1, and the limit block 1 and the L-shaped rod surround the outside of the rotating rod.

[0014] Furthermore, the front end support module is screwed into the cavity at the lower end of the rectangular rod, and a limit module 2 is installed on the side of the front end support module. The limit module 2 reserves an installation groove 2 on the side wall of the cavity at the lower end of the rectangular rod. A spiral beryllium copper wire 5 is fixedly connected to the installation groove 2, and the other end of the spiral beryllium copper wire 5 is fixedly connected to the limit block 2, and the other end of the limit block 2 slides out of the installation groove 2.

[0015] The beneficial effects of the present invention are: 1. The present invention uses a single drive structure to drive the movement of the rectangular rod through the installation of a drive module, which reduces the use cost and processing difficulty. At the same time, it can be self-maintained, easy to use, and extends the inspection and maintenance cycle. In addition, through the installation of limit module 1 and limit module 2, the rotating rod and the front end support module can be limited, thereby ensuring that the rotating rod and the front end support module will not rotate during the movement, ensuring the normal progress of the detection work, and through the installation of limit module 1, it is ensured that the rotating rod can be stably retracted after use to prevent the rotating rod from detaching during movement.

[0016] 2. The present invention installs a driving module, and the wedge block is pulled by the rotating disk to rotate together. The rotating disk rotates one circle to achieve the purpose of discharging the engine oil, and performs maintenance on the rotating disk. When the rotating disk and the linkage plate are engaged after maintenance, the linkage plate is then maintained. When the rotating disk moves, the maintenance unit can continuously perform maintenance. When the rotating disk does not move, the maintenance unit no longer performs maintenance, thereby achieving the purpose of self-maintenance of the rotating disk and the linkage plate. The use is convenient, and the inspection and maintenance cycle of the rotating disk and the linkage plate is extended.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of a partial cross-sectional structure of a rectangular tube and a rectangular rod according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the installation of a rectangular tube and a rectangular rod according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a driving module from a first viewing angle according to an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the structure at M of FIG. Figure 6 A schematic diagram of the structure of a driving module according to a second viewing angle of an embodiment of the present invention; Figure 7 For the embodiment of the present invention Figure 6 A schematic diagram of the structure of the upper part of the embodiment; Figure 8 A schematic diagram of the structure of a driving module according to an embodiment of the present invention from a third viewing angle; Fig. 9 For the embodiment of the present invention Figure 8 Schematic diagram of some structures; Fig.10 It is a schematic diagram of the structure of the driving module according to the fourth viewing angle of an embodiment of the present invention; Fig.11 For the embodiment of the present invention Fig.10 A schematic diagram of the structure of the upper part of the embodiment; Fig.12 It is a schematic diagram of the structure of the driving module according to the fourth viewing angle of an embodiment of the present invention; Fig.13 For the embodiment of the present invention Fig.12 A schematic diagram of the enlarged structure at N; Fig.14 For the embodiment of the present invention Fig.12 A schematic diagram of the structure of the upper part of the embodiment; Fig.15 This is a schematic diagram of a cross-sectional top view of a limit module according to an embodiment of the present invention; Fig.16 It is a schematic diagram of a top view of the second cross-section structure of a limit module according to an embodiment of the present invention; Figure numerals: 1, detection probe; 2, rectangular tube; 3, rectangular rod; 4, driving module; 5, rotating rod; 6, limit module 1; 8, front end support module; 9, limit module 2; 10, positioning module; 11, handle; 401, housing; 402, motor; 41, linkage plate; 42, rotating rod; 43, positioning bar; 44, rotating disk; 45, driven bearing unit; 451, groove 1; 452, variable platform 1; 453, tensioning screw 1; 454, bearing bar; 455, maintenance frame; 456, rotating ring; 457, connecting tube; 458, shielding plate; 46 , maintenance unit; 461, bearing plate; 462, tension screw 2; 463, liquid storage tank; 464, injection tube; 465, screw cap; 466, side plate; 467, tension screw 3; 468, drainage channel; 469, rubber channel; 4610, confluence channel; 4611, screw rod 1; 4612, diversion channel; 4613, switch 1; 4614, spray head; 4615, guide rod; 4616, connecting piece; 47, drainage control unit; 471, tension screw 4; 472, wedge block 1; 473, variable strip; 474, support sheet; 475, Spiral beryllium copper wire 1; 476, blocking block; 477, sealing block; 478, rotating column 1; 479, adjusting column; 4710, spiral beryllium copper wire 2; 4711, rotating column 2; 4712, connecting frame; 48, drainage and compression unit; 481, hoop; 482, wedge block 2; 483, groove 2; 484, variable platform 2; 485, thread mouth tube; 486, screw rod 2; 487, restraint block; 488, square bar; 489, concave seat; 4810, disc; 4811, spiral beryllium copper wire 3; 4812, compression platform; 4813, assembly platform; 48 14. Rubber cylinder; 4815. Connecting channel; 4816. Gas injection channel; 49. Liquid recovery unit; 491. Adapter plate; 492. Protruding plate; 493. Collecting cover; 494. Liquid discharge channel; 495. Switch 2; 61. Mounting slot 1; 62. Limit block 1; 63. Spiral beryllium copper wire 4; 64. L-shaped rod; 81. Support rod; 91. Mounting slot 2; 92. Spiral beryllium copper wire 5; 93. Limit block 2; 101. Movable slot; 102. Locking plate; 103. Spiral beryllium copper wire 6; 104. Mounting slot 3; 105. Unlocking block; 106. Toggle block. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1 and Figure 2 The embodiment of the present invention proposes a partial discharge detection device for a ring main unit, including a detection probe 1, the lower end of the detection probe 1 is fixedly connected to a rectangular rod 3, a rectangular tube 2 is movably installed on the outer side of the rectangular rod 3, a driving module 4 is installed on the upper end of the rectangular tube 2, the front end of the rectangular tube 2 is screwed to a rotating rod 5, the lower end of the rotating rod 5 is screwed to a moving wheel, a limiting module 6 is installed on the upper end of the rotating rod 5, a front end support module 8 is screwed in the cavity at the lower end of the rectangular rod 3, a limiting module 2 9 is installed on the side of the front end support module 8, and a positioning module 10 is installed on one side of the cavity at the lower end of the rectangular rod 3.

[0021] Through the installation of the driving module 4, a single driving structure is used to drive the movement of the rectangular rod 3, which reduces the use cost and processing difficulty. At the same time, it can be self-maintained, easy to use, and extends the inspection and maintenance cycle. In addition, through the installation of the limit module 1 6 and the limit module 2 9, the rotating rod 5 and the front end support module 8 can be limited, thereby ensuring that the rotating rod 5 and the front end support module 8 will not rotate during the movement, thereby ensuring the normal progress of the detection work. In addition, through the installation of the limit module 1 6, it is ensured that the rotating rod 5 can be stably retracted after use to prevent the rotating rod 5 from detaching during the movement.

[0022] Reference Figure 2 and Figure 3 A number of rollers are screwed on both sides of the lower end of the rectangular rod 3, and the rollers are rollingly connected to the lower wall of the rectangular tube 2, so that the rectangular rod 3 can move more smoothly. The longitudinal sides of the rectangular rod 3 are fixedly connected to sliders, and the sliders are movably installed in the slide grooves on the two longitudinal walls inside the rectangular tube 2, and the length of the slide groove is less than the length of the rectangular tube 2.

[0023] Reference Figure 1 The threads on both sides of the rectangular tube 2 are connected to the handle 11. The handle 11 is rotated to extend out of the rectangular tube 2. After the rectangular rod 3 is extended to the farthest position, the handle 11 can still continue to move forward to perform detection, thereby expanding the detection range.

[0024] Reference Figure 4-Figure 14The driving module 4 includes a housing 401 connected to the rectangular tube 2 and a linkage piece 41 fixed to the upper end of the rectangular rod 3. One side of the housing 401 is fixed to the motor 402. The inner side of the housing 401 is screwed to the rotating rod 42. The outer side of the rotating rod 42 is provided with a rotating disk 44. A plurality of teeth are reserved on the upper wall surface of the linkage piece 41 and the outer peripheral surface of the rotating disk 44 and are engaged with each other through the teeth. Among them, the rotating disk 44 is connected to the center of the rotating rod 42 through the positioning strip 43 to ensure that the rotating disk 44 and the rotating rod 42 rotate together. It also includes a driven bearing unit 45, a maintenance unit 46 and a liquid discharge control unit 47; The driven bearing unit 45 includes a groove 451, and a groove 451 is reserved in the middle of each side of the linkage plate 41. The two sides of the rotating plate 44 are respectively fixedly connected to a connecting tube 457, and the pair of connecting tubes 457 are respectively screwed to a pair of rotating circles 456. The pair of rotating circles 456 are respectively fixed to a pair of retaining frames 455. The outer parts of the pair of retaining frames 455 are clamped to a shielding sheet 458. The lower ends of the pair of retaining frames 455 are respectively movably connected to the corresponding groove 451 via a pair of variable bearing parts. In the meantime, the oil on the rotating disk 44 flows down along the side wall to between the connecting tube 457 and the rotating ring 456, and performs maintenance on the connecting position of the connecting tube 457 and the rotating ring 456.

[0025] The variable bearing part includes a variable platform 452, a tensioning screw 453, and a bearing bar 454. The center of the lower end of a pair of retaining frames 455 is fixedly connected to the bearing bar 454. The lower end of each bearing bar 454 is fixedly connected to the variable platform 452 via a tensioning screw 453. The variable platform 452 and the groove 451 on the same side are movably connected. The tensioning screw 453 facilitates the assembly of the variable platform 452 and the bearing bar 454. The movably connected variable platform 452 and the groove 451 can ensure that the rotating disk 44 and the linkage plate 41 always maintain a stable bite.

[0026] The maintenance unit 46 includes a liquid storage tank 463, which is mounted at a high position of the rotating disk 44, and a drainage channel 468 is connected to the center of the lower end of the liquid storage tank 463; The maintenance unit 46 also includes a supporting plate 461 and a tensioning screw 462. Both sides of the liquid storage tank 463 are fixedly connected to the supporting plates 461. The lower ends of a pair of supporting plates 461 are respectively fixedly connected to the lower ends of a pair of retaining frames 455 via tensioning screws 462, so that the liquid storage tank 463 moves with the retaining frames 455 and the rotating disk 44, ensuring that the oil released from the drainage channel 468 can fall smoothly onto the rotating disk 44.

[0027] The maintenance unit 46 also includes an injection tube 464 and a screw cap 465. The upper end of the liquid storage tank 463 is connected to the injection tube 464. The thread on the injection tube 464 is connected to the screw cap 465. Rotating the screw cap 465 can open the injection tube 464, and oil is injected into the liquid storage tank 463 through the injection tube 464. After the oil injection is completed, tightening the screw cap 465 can close the injection tube 464 to achieve oil injection.

[0028] The maintenance unit 46 also includes a flow divider and an adjustment part. The lower end of the drainage channel 468 is fixedly connected to the upper end of the flow divider, and the two sides of the flow divider are connected to the lower end of the liquid storage tank 463 through the adjustment part. The flow divider can spray the oil flowing out of the drainage channel 468 onto the rotating disk 44, so that the oil can be evenly dispersed and the maintenance function can be enhanced. The adjustment part can change the vertical span of the flow divider as needed. When the rotating disk 44 is large, the flow divider is adjusted upward to avoid hindering the rotation of the rotating disk 44.

[0029] The flow dividing part includes a rubber channel 469, a confluence channel 4610, a flow dividing channel 4612, a switch 4613, and a liquid spray head 4614. The lower end of the discharge channel 468 is connected to the inlet of the upper end of the confluence channel 4610 via the rubber channel 469. Both ends of the confluence channel 4610 are sealed. The lower end of the confluence channel 4610 is connected to a plurality of flow dividing channels 4612 at equal intervals. The lower end of each flow dividing channel 4612 is fixedly connected to the liquid spray head 4614. A switch 4613 is installed in the middle of each flow dividing channel 4612. The oil discharged from the discharge channel 468 is connected to the inlet of the upper end of the confluence channel 4610 via the rubber channel 469. The two ends of the confluence channel 4610 are sealed. The lower end of the confluence channel 4610 is connected to a plurality of flow dividing channels 4612 at equal intervals. The lower end of each flow dividing channel 4612 is fixedly connected to the liquid spray head 4614. A switch 4613 is installed in the middle of each flow dividing channel 4612. 69 flows into the confluence channel 4610, and then can be transported to the spray head 4614 through the diversion channel 4612, and the engine oil can be sprayed onto the rotating disk 44 through the spray head 4614 to enhance the maintenance function. The switch 4613 can be used to adjust the spray amount of the spray head 4614, and the discharge can be increased near the center of the rotating disk 44, and the discharge can be reduced near the side wall of the rotating disk 44 to prevent the side wall of the rotating disk 44 from discharging too much liquid and increasing the loss. The rubber channel 469 can allow the confluence channel 4610, the diversion channel 4612 and the spray head 4614 to change vertically under the action of the adjustment part.

[0030] The adjusting part includes a screw rod 4611, a guide rod 4615, and a connecting piece 4616. The two ends of the confluence channel 4610 are respectively fixedly connected to the connecting piece 4616. The guide rod 4615 is movably mounted on the connecting piece 4616 on one side. The upper end of the guide rod 4615 is fixedly connected to the lower end of the liquid storage tank 463. The connecting piece 4616 on the other side is threadedly connected to the screw rod 4611. The upper end of the screw rod 4611 is screwed to the lower end of the liquid storage tank 463. By rotating the screw rod 4611, the screw rod 4611 and the connecting piece 4616 are threadedly connected to pull the confluence channel 4610 to move vertically along the guide rod 4615.

[0031] The lower end of the liquid discharge control unit 47 is installed in a pair of retaining frames 455 , and the upper end of the liquid discharge control unit 47 extends into the liquid storage tank 463 .

[0032] The liquid discharge control unit 47 includes a tensioning screw 471, a wedge block 472, a variable bar 473, a support sheet 474, a blocking block 476 and a return portion. The two sides of the rotating disk 44 are respectively connected to the wedge block 472 via the tensioning screw 471. The wedge block 472 is provided with a circular opening adapted to the rotating rod 42. The upper end of each retaining frame 455 is movably provided with a variable bar 473. The lower end of the variable bar 473 penetrates the maintenance The upper end of the support frame 455 is fixedly connected to the supporting plate 474, the lower end of the supporting plate 474 touches the upper end of the corresponding wedge block 472, and a return portion is arranged between the supporting plate 474 and the upper end of the corresponding supporting frame 455. The upper ends of a pair of variable bars 473 are respectively movably connected to the lower end of the liquid storage tank 463, and the upper ends of the pair of variable bars 473 are fixedly connected to the blocking block 476, and the center of the blocking block 476 is located at the upper end of the drainage channel 468.

[0033] When the rotating disk 44 rotates, the wedge block 472 is pulled to rotate. When the wedge block 472 is in a compressed state, the wedge block 472 compresses the variable strip 473 to move upward through the support piece 474, pushing the blocking block 476 upward, and then connecting the drainage channel 468 at the lower end of the liquid storage tank 463, so that the oil in the liquid storage tank 463 can be discharged from the drainage channel 468 and fall onto the rotating disk 44 for maintenance. At this time, the return portion is shortened, and then the wedge block 472 continues to rotate with the rotating disk 44. At this time, the blocking block 476 is still higher than the drainage channel 468, and the drainage channel 468 is still open, and the drainage is continued. As the rotating disk 44 and the wedge block 472 continue to rotate, the returning part of the wedge block 472 is restored during the return period, driving the support piece 474 and the variable bar 473 to move downward, and the variable bar 473 pulls the blocking block 476 to move downward. The blocking block 476 blocks the mouth of the drainage channel 468 to prevent the oil from flowing out. Then the wedge block 472 rotates. At this moment, the mouth of the drainage channel 468 is still closed. The rotating disk 44 completes the above action when it rotates one circle. As the rotating disk 44 continues to rotate, the drainage channel 468 can be intermittently opened and closed, and then the rotating disk 44 and the linkage plate 41 are self-maintained.

[0034] The liquid discharge control unit 47 further includes a sealing block 477, to which the lower end of the block 476 is fixedly connected, and the sealing block 477 is arranged opposite to the liquid discharge passage 468. The sealing block 477 replaces the block 476 to seal the mouth of the liquid discharge passage 468, thereby strengthening the blocking effect of the block 476 on the liquid discharge passage 468, and the sealing block 477 is a rubber block.

[0035] The return portion includes a spiral beryllium copper wire 475, and the two ends of the upper end of the support sheet 474 are fixedly connected to a pair of spiral beryllium copper wires 475, and the upper ends of the pair of spiral beryllium copper wires 475 are respectively fixedly connected to the upper ends of the corresponding inner sides of the retaining frame 455. When the variable bar 473 moves upward, the support sheet 474 moves upward to press the spiral beryllium copper wire 475, and during the return of the wedge block 472, the spiral beryllium copper wire 475 presses the variable bar 473, the support sheet 474, the blocking block 476 and the sealing block 477 to move downward and return, so that the sealing block 477 blocks the drainage channel 468.

[0036] The return portion also includes a rotating column 478, an adjusting column 479, a spiral beryllium copper wire 4710, a rotating column 4711, and a connecting frame 4712. The upper ends of a pair of variable bars 473 are respectively screwed to the lower ends of a pair of adjusting columns 479 via the rotating column 478, and the upper ends of a pair of adjusting columns 479 are respectively screwed to a pair of connecting frames 4712 via the rotating column 4711. The pair of connecting frames 4712 are respectively fixed to the upper ends of the liquid storage tank 463. The two ends of each adjusting column 479 are respectively fixed to a blocking ring. The self-hoop is connected to the spiral beryllium copper wire 4710, and the two ends of the spiral beryllium copper wire 4710 are respectively connected to the barrier rings at the two ends of the adjusting column 479. When the changing bar 473 moves upward, the spiral beryllium copper wire 4710 is shortened. When the changing bar 473 moves downward, the deformation of the spiral beryllium copper wire 4710 presses the supporting plate 474 to move downward and return to its original position. The spiral beryllium copper wire 4710 can assist the spiral beryllium copper wire 1 475 to work together to ensure the stability of the return of the blocking block 476, the changing bar 473 and the supporting plate 474.

[0037] The maintenance unit 46 also includes a side plate 466 and a tensioning screw three 467. One side of the liquid storage tank 463 is open, and the mouth of the liquid storage tank 463 is fixedly connected to the side plate 466 via the tensioning screw three 467. The mouth is sealed by the side plate 466 and the tensioning screw three 467. The side plate 466 is removed to assemble components in the liquid storage tank 463.

[0038] During operation, the motor 402 drives the rotating rod 42 to rotate, and the rotating rod 42 drives the rotating disk 44 to rotate. The rotating disk 44 and the linkage piece 41 are engaged with each other to make the linkage piece 41 move. The retaining frame 455 is screwed on the rotating disk 44. The retaining frame 455 moves along the groove 451 through the variable bearing part, so that the linkage piece 41 and the rotating disk 44 can maintain a stable engagement. When the rotating disk 44 rotates, the retaining frame 455 is driven to move on the linkage piece 41. Through the variable bearing part and the groove 451, the linkage piece 41 can be moved. The movable connection performs load-bearing guidance on the maintenance frame 455, thereby ensuring the stability of the driving module 4. When the rotating rod 42 and the rotating disk 44 rotate, the drainage channel 468 at the lower end of the liquid storage tank 463 can be opened through the drainage control unit 47, so that the engine oil filled in the liquid storage tank 463 can fall onto the rotating disk 44. The engine oil is applied to the linkage plate 41 as the rotating disk 44 rotates. The engine oil performs maintenance on the linkage plate 41 and the rotating disk 44, thereby achieving the purpose of self-maintenance of the rotating disk 44 and the linkage plate 41.

[0039] Reference Figure 4-Figure 14 The driving module 4 further includes a liquid discharge pressing unit 48, the lower end of which is arranged on one side of the rotating rod 42, and the upper end of which is arranged on one side of the liquid storage tank 463. The liquid discharge pressing unit 48 can make the oil in the liquid storage tank 463 spray out smoothly from the liquid discharge channel 468 and the diversion part, and the liquid discharge pressing unit 48 moves with the rotation of the rotating rod 42, adding air to the liquid storage tank 463 to increase the pressure strength, so that the oil cup in the liquid storage tank 463 is pressed out, and the oil can be discharged smoothly.

[0040] The liquid discharge and compression unit 48 includes an assembly platform 4813, a rubber tube 4814, a connecting channel 4815, an air injection channel 4816, a compression linkage part and a compression strength adjustment part. The assembly platform 4813 is fixedly connected to the center of one side of the liquid storage tank 463, the lower end of the assembly platform 4813 is fixedly connected to the rubber tube 4814, the upper end of the rubber tube 4814 is connected to the connecting channel 4815, one side of the upper end of the liquid storage tank 463 is connected to the air injection channel 4816, the other end of the air injection channel 4816 is connected to the other end of the connecting channel 4815, the lower end of one side of the liquid storage tank 463 is provided with a compression linkage part, and one side of the rotating rod 42 is provided with a compression strength adjustment part.

[0041] The compression strength adjustment part can change the distance that the compression linkage part is lifted upward when the rotating rod 42 rotates, and then can adjust the size of the contraction of the rubber tube 4814. The size of the contraction of the rubber tube 4814 will adjust the amount of gas added to the liquid storage tank 463, and then can control the amount of oil leakage. When the rubber tube 4814 is compressed, the gas in the rubber tube 4814 flows into the connecting channel 4815 through the check switch at the upper end, and then flows into the liquid storage tank 463 through the gas injection channel 4816. When the compression linkage part moves downward and separates from the rubber tube 4814, under the deformation action of the rubber tube 4814, the external gas flows into the rubber tube 4814 through the check switch on the side of the rubber tube 4814, so as to be compressed and gassed later.

[0042] The compression linkage part includes a constraint block 487, a square bar 488, a concave seat 489, a disk 4810, a spiral beryllium copper wire 4811 and a compression platform 4812. One side of the liquid storage tank 463 is fixedly connected to the constraint block 487. The square bar 488 is movably installed in the constraint block 487. The upper end of the square bar 488 is fixedly connected to the compression platform 4812. The compression platform 4812 is located under the rubber tube 4814. The lower end of the square bar 488 is fixedly connected to the concave seat 489. The disk 4810 is screwed into the concave seat 489. The outer surface of the square bar 488 between the constraint block 487 and the concave seat 489 is clamped with the spiral beryllium copper wire 4811.

[0043] The wedge block 2 482 on the compression strength adjustment part rotates, and when the tip of the wedge block 2 482 touches the disc 4810, the disc 4810 compresses the concave seat 489 and the square bar 488 to move upward, and then compresses the compression platform 4812 to move upward to compress the rubber tube 4814, so that the rubber tube 4814 adds air to the liquid storage tank 463 to increase the compression strength. At this time, the spiral beryllium copper wire 3 4811 is shortened, and when the wedge block 2 482 returns to its original position, the spiral beryllium copper wire 3 4811 is extended, pulling the concave seat 489 and the square bar 488 to move downward.

[0044] The compression strength adjustment part includes a hoop 481, a wedge block 482, a groove 483, a variable platform 484, a thread tube 485, and a screw rod 486. A connection port is reserved in the middle of one side of the rotating rod 42. A groove 483 arranged along the central axis of the rotating rod 42 is reserved at the upper end of one side of the rotating rod 42. One side of the rotating rod 42 is hooped with the hoop 481. The inside of the hoop 481 is fixedly connected to the variable platform 484. The variable platform 484 and the groove 483 are movably connected. The variable platform 484 is connected to the groove 483. The lower end of 484 is fixedly connected to a thread tube 485 located in the middle of the connection port, and a screw rod 486 is screwed into the connection port. The screw rod 486 and the thread tube 485 are threadedly connected. The outer circumference of the hoop tube 481 is fixedly connected to three wedge blocks 482 at equal intervals. The tips of the three wedge blocks 482 and the tip of the wedge block 1 472 are all facing the same direction. The tips of the three wedge blocks 482 increase in size from the inside to the outside. The upper end of one of the wedge blocks 482 touches the lower end of the disc 4810.

[0045] The three wedge blocks 2 482 rotate together with the wedge block 1 472. When the wedge block 1 472 pulls the variable strip 473, the blocking block 476 and the sealing block 477 upward to allow the drain channel 468 to drain the engine oil, the tip of the wedge block 2 482 also happens to pull the compression linkage part upward to make the rubber cylinder 4814 add air to the liquid storage tank 463 to press the engine oil out. The air addition and the drain are performed together, and the screw rod 2 486 is rotated. The screw rod 2 486 and the screw mouth cylinder 485 are screwed. The energy-pulling variable platform 2 484 moves along the groove 2 483, and then the pulling hoop tube 481 moves along the rotating rod 42, and then the upper end of the corresponding wedge block 2 482 touches the lower end of the disc 4810, the screw rod 2 486 rotates, and the hoop tube 481 moves outward. Because the sizes of the tips of the three wedge blocks 2 482 are different, the sizes of the compression rubber tube 4814 are different, and then the amount of gas added to the liquid storage tank 463 is adjusted, and then the amount of engine oil added is adjusted.

[0046] Reference Figure 4-Figure 14 The driving module 4 further includes a liquid recovery unit 49 . The liquid recovery unit 49 is mounted on the side wall of the linkage plate 41 . The liquid recovery unit 49 can recover the excess oil on the linkage plate 41 .

[0047] The liquid recovery unit 49 includes a receiving piece 491. The two sides of the linkage piece 41 are fixedly connected to the receiving piece 491 at the upper ends of the side walls of the groove 451. The upper end of the receiving piece 491, which is farther from the groove 451, and the two ends of the upper end of the receiving piece 491 are fixedly connected to protruding pieces 492. The lower ends of the two ends of the linkage piece 41 are respectively provided with liquid recovery and discharge parts.

[0048] During operation, the excess oil on the linkage plate 41 flows along the side wall of the linkage plate 41 to the receiving plate 491. Due to the installation of the protruding piece 492, the oil flows into the groove 451, which can maintain the lower end of the variable bearing part, so that the variable bearing part changes along the stable groove 451, and the excess oil in the groove 451 flows out from the head end to the recovery liquid discharge part for recovery.

[0049] Among them, the recovery and discharge part includes a collecting cover 493, a discharge channel 494, and a switch 495. The two ends of the linkage plate 41 are respectively fixedly connected to the collecting cover 493. When the changing platform 452 changes in the groove 451, the excess oil in the groove 451 is pushed into the collecting cover 493 through the head end of the groove 451 for recovery. The side of the collecting cover 493 is connected to the discharge channel 494. The switch 495 is installed on the discharge channel 494. After a certain amount of oil is recovered in the collecting cover 493, the switch 495 can be turned on to discharge the oil in the collecting cover 493 through the discharge channel 494, so that the oil can be reused.

[0050] Reference Figure 1 and Fig.15 The limiting module 6 includes a mounting groove 61 reserved on the side of the rectangular tube 2 and an L-shaped rod 64 fixedly connected to the side of the rectangular tube 2. A spiral beryllium copper wire 63 is fixedly connected in the mounting groove 61. The other end of the spiral beryllium copper wire 63 is fixedly connected to a limiting block 62. One end of the limiting block 62 slides out of the mounting groove 61. The limiting block 62 and the L-shaped rod 64 surround the outer side of the rotating rod 5.

[0051] When it is necessary to lower the rotating rod 5, the limit block 62 is pressed into the installation groove 61. When the rotating rod 5 rotates downward under the action of its own gravity, the rotating rod 5 moves away from the limit block 62. Under the cooperation of the spiral beryllium copper wire 63, the limit block 62 moves out of the installation groove 61. The L-shaped rod 64 and the limit block 62 limit the rotating rod 5 to prevent the rotating rod 5 from rotating during the movement. After use, the limit block 62 is pressed into the installation groove 61, and the rotating rod 5 is rotated in the opposite direction to rotate the rotating rod 5 out of the L-shaped rod 64 and move it to the top of the limit block 62. Then, the rotating rod 5 is stably loaded to ensure that the rotating rod 5 can be stably retracted after use to prevent the rotating rod 5 from detaching during the movement.

[0052] Reference Figure 2 The front end support module 8 includes a support rod 81 screwed into the cavity at the lower end of the rectangular rod 3, the lower end of the support rod 81 is screwed to the moving wheel, and a torsion spring is installed between the support rod 81 and the side wall of the cavity at the lower end of the rectangular rod 3.

[0053] When the rectangular rod 3 is extended to a length greater than half of its own length, the positioning module 10 unlocks the support rod 81, and the support rod 81 falls down quickly to support the rectangular rod 3, thereby ensuring the stability of the device when in use.

[0054] Reference Figure 2 and Fig.16 The limiting module 2 9 reserves an installation groove 2 91 on the side wall of the cavity at the lower end of the rectangular rod 3, and a spiral beryllium copper wire 5 92 is fixedly connected in the installation groove 2 91. The other end of the spiral beryllium copper wire 5 92 is fixedly connected to a limiting block 2 93, and the other end of the limiting block 2 93 slides out of the installation groove 2 91.

[0055] When the rectangular rod 3 moves to a length greater than half of its own length, the support rod 81 rotates downward, and with the cooperation of the spiral beryllium copper wire 5 92, the limit block 2 93 extends out of the installation slot 2 91, and then the support rod 81 is limited by the limit block 2 93 and the cavity to ensure stable movement of the device during use. After use, the limit block 2 93 is pressed into the installation slot 2 91, and the support rod 81 is rotated in the opposite direction. The positioning module 10 positions the support rod 81 to ensure stable storage of the support rod 81.

[0056] Reference Figure 2 The positioning module 10 includes an active groove 101 reserved on the right side of the cavity at the lower end of the rectangular rod 3 and an installation groove three 104 reserved on the lower wall surface inside the rectangular tube 2. A Z-shaped locking piece 102 is movably installed in the active groove 101. One end of the locking piece 102 can be engaged in the limiting opening at the lower end of the support rod 81. The locking piece 102 is connected to the side wall of the active groove 101 via a spiral beryllium copper wire six 103. The other end of the locking piece 102 is fixedly connected to a toggle block 106. The lower end of the toggle block 106 movably passes through the active groove 101. An unlocking block 105 is screwed into the installation groove three 104. The upper end of the unlocking block 105 is above the lower end of the toggle block 106. Torsion springs are installed at both ends of the unlocking block 105. One end of the torsion spring is connected to the unlocking block 105, and the other end of the torsion spring is connected to the side wall of the installation groove three 104.

[0057] When the extended length of the rectangular rod 3 is greater than half of its own length, the toggle block 106 first contacts the unlocking block 105, and the spiral beryllium copper wire 103 is shortened first. The toggle block 106 pulls the locking plate 102 to change, so that the locking plate 102 moves out of the limit opening on the support rod 81, and the positioning of the locking plate 102 on the support rod 81 is cancelled. When the rectangular rod 3 continues to be moved, the toggle block 106 drives the unlocking block 105 to rotate, and the toggle block 106 passes the unlocking block 105. The rectangular rod 3 continues to extend to perform detection, and the locking plate 102 and the unlocking block 105 return to their original positions under the action of the spiral beryllium copper wire 103 and the torsion spring.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A partial discharge detection device for a ring main unit, characterized in that: It comprises a detection probe, the lower end of the detection probe is fixedly connected to a rectangular rod, a rectangular tube is movably arranged outside the rectangular rod, and a driving module is arranged at the upper end of the rectangular tube; The driving module includes a shell connected to the rectangular tube, a linkage plate fixed to the upper end of the rectangular rod, a driven bearing unit, a maintenance unit and a liquid discharge control unit. One side of the shell is fixed to the motor, the inner side of the shell is screwed to the rotating rod, and the outer side of the rotating rod is provided with a rotating disk. A plurality of teeth are reserved on the upper wall surface of the linkage plate and the outer peripheral surface of the rotating disk, and the teeth are engaged with each other. The driven bearing unit includes a groove one, and a groove one is reserved in the middle of each side of the linkage plate. A pair of retaining frames are connected to the two sides of the rotating disk, and the lower ends of the pair of retaining frames are movably connected to the corresponding groove one via a pair of variable bearing parts. The maintenance unit includes a liquid storage tank, which is installed at a high position of the rotating disk, and the middle of the lower end of the liquid storage tank is connected to a drainage channel; The lower end of the liquid discharge control unit is arranged in a pair of retaining frames, and the upper end of the liquid discharge control unit extends into the liquid storage tank; The liquid discharge control unit includes a wedge block and a return part. The two sides of the rotating disk are respectively fixedly connected to the wedge block via a tensioning screw four. A circular opening for fitting the rotating rod is reserved on the wedge block. A variable bar is movably installed on the upper end of each retaining frame. The lower end of the variable bar passes through the upper end of the retaining frame and is fixedly connected to a supporting plate. The lower end of the supporting plate touches the upper end of the corresponding wedge block. A return part is installed between the supporting plate and the upper end of the corresponding retaining frame. The upper ends of a pair of variable bars are respectively movably connected to the lower end of the liquid storage tank. The upper ends of a pair of variable bars are fixedly connected to a blocking block. The center of the blocking block is located at the upper end of the liquid discharge channel.

2. A ring main unit partial discharge detection device according to claim 1, characterized in that: The return part comprises a spiral beryllium copper wire, and the two ends of the upper end of the support plate are fixedly connected with a pair of spiral beryllium copper wires, and the upper ends of the pair of spiral beryllium copper wires are respectively fixedly connected to the upper ends of the corresponding retaining frames.

3. A ring main unit partial discharge detection device according to claim 1, characterized in that: The maintenance unit also includes a diverter part and an adjusting part. The lower end of the drainage channel is fixedly connected to the upper end of the diverter part, and the two sides of the diverter part are connected to the lower end of the liquid storage tank via the adjusting part.

4. A ring main unit partial discharge detection device according to claim 1, characterized in that: The driving module also includes a liquid discharge pressing unit, the lower end of which is arranged on one side of the rotating rod, and the upper end of which is arranged on one side of the liquid storage tank.

5. A partial discharge detection device for a ring main unit according to claim 3, characterized in that: The liquid discharge and compression unit includes a rubber tube, a compression linkage part and a compression strength adjustment part. The center of one side of the liquid storage tank is fixedly connected to the assembly table, the lower end of the assembly table is fixedly connected to the rubber tube, the upper end of the rubber tube is connected to the connecting channel, one side of the upper end of the liquid storage tank is connected to the air injection channel, the other end of the air injection channel is connected to the other end of the connecting channel, the compression linkage part is installed at the lower end of one side of the liquid storage tank, and the compression strength adjustment part is installed on one side of the rotating rod.

6. A ring main unit partial discharge detection device according to claim 5, characterized in that: The compression linkage part includes a square bar and a compression platform. One side of the liquid storage tank is fixedly connected to the constraint block. The square bar is movably installed in the constraint block. The upper end of the square bar is fixedly connected to the compression platform. The compression platform is located under the rubber tube. The lower end of the square bar is fixedly connected to the concave seat. A disc is screwed in the concave seat. The outer surface of the square bar between the constraint block and the concave seat is clamped with a spiral beryllium copper wire.

7. A ring main unit partial discharge detection device according to claim 6, characterized in that: The compression strength adjustment part includes two wedge blocks and two screw rods. A connection port is reserved in the middle of one side of the rotating rod. Two grooves are reserved on the upper end of one side of the rotating rod and are arranged along the central axis of the rotating rod. One side of the rotating rod is connected to a hoop tube, and the inside of the hoop tube is fixedly connected to two variable platforms. The two variable platforms and the two grooves are movably connected. The lower end of the two variable platforms is fixedly connected to a thread mouth tube in the middle of the connection port. Two screw rods are screwed into the connection port. The two screw rods are threadedly connected to the thread mouth tube. Three wedge blocks are fixedly connected to the outer circumference of the hoop tube at equal intervals. The tips of the three wedge blocks are arranged in the same direction as the tip of the wedge block one. The tips of the three wedge blocks increase in size from the inside to the outside. The upper end of one of the wedge blocks touches the lower end of the disc.

8. A ring main unit partial discharge detection device according to claim 1, characterized in that: The driving module also includes a liquid recovery unit, and the liquid recovery unit is installed on the side wall of the linkage piece; The liquid recovery unit includes a receiving plate and a liquid recovery and discharge part. The two sides of the linkage plate are fixedly connected to the receiving plate at the upper end of one side wall of the groove. The upper end of the receiving plate, which is farther from the groove, and the two ends of the upper end of the receiving plate are fixedly connected to protruding plates, and the lower ends of the two ends of the linkage plate are respectively provided with liquid recovery and discharge parts.

9. A ring main unit partial discharge detection device according to claim 1, characterized in that: The front end of the rectangular tube is screwed to the rotating rod, and a limit module 1 is installed on the upper end of the rotating rod. The limit module 1 includes a mounting groove 1 reserved on the side of the rectangular tube and an L-shaped rod fixedly connected to the side of the rectangular tube. A spiral beryllium copper wire 4 is fixedly connected in the mounting groove 1, and the other end of the spiral beryllium copper wire 4 is fixedly connected to a limit block 1. One end of the limit block 1 slides out of the mounting groove 1, and the limit block 1 and the L-shaped rod surround the outside of the rotating rod.

10. A ring main unit partial discharge detection device according to claim 1, characterized in that: The front end support module is screwed into the cavity at the lower end of the rectangular rod, and a limit module 2 is installed on the side of the front end support module. The limit module 2 reserves an installation groove 2 on the side wall of the cavity at the lower end of the rectangular rod. A spiral beryllium copper wire 5 is fixedly connected to the installation groove 2, and the other end of the spiral beryllium copper wire 5 is fixedly connected to the limit block 2, and the other end of the limit block 2 slides out of the installation groove 2.

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