Transformer partial discharge on-line monitoring equipment with adjustable bracket

Abstract

The invention discloses a transformer partial discharge on-line monitoring device with an adjustable support, which relates to the technical field of discharge detection and comprises a lifting assembly, a detection assembly and a control panel. The device further comprises a base. The climbing component is used for controlling the base to advance to a height suitable for operation along the electric pole; the adjusting component is matched with the lifting component to adjust the detection component to a position needing to be monitored; the positioning part is used for providing stable support by abutting against the electric pole instead of a roller; and the obstacle crossing component is matched with the positioning component to cross obstacles on the advancing path. According to the invention, the climbing component is arranged, the rollers rotate cooperatively to climb to a position close to the lower part of the transformer along the electric pole, and the climbing component is always in reliable contact with the electric pole in the climbing process, so that stable and safe high-position climbing is realized, and the operation problem of a traditional telescopic structure during high-position operation is solved; and the problem of inaccurate positioning caused by shaking due to an overlarge force arm in the operation process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of discharge detection, and in particular to an online monitoring device for partial discharge of a transformer with an adjustable bracket. Background Art

[0002] Transformers are crucial equipment in power systems, and their safe and stable operation is crucial. Failures can cause significant losses to the national economy. The substation integrated monitoring platform performs multiple online monitoring tasks, including monitoring the water density of GIS switches, partial discharge, lightning arresters, and the GIS switchroom environment. It also monitors transformer oil chromatography and partial discharge online. Utilizing the latest sensor and computer technologies, this system boasts high measurement accuracy, remote data transmission, and easy installation and use. It is compatible with SF6 circuit breakers, transformers, and GIS of various voltage levels from different manufacturers, meeting the needs of power distribution network automation and equipment condition-based maintenance. It is essential technical equipment for online monitoring and condition-based maintenance of electrical equipment in power distribution network automation and is also essential hardware infrastructure for smart grid development. Research has shown that the vast majority of transformer failures are insulation faults, and partial discharge, as a hallmark of insulation failure, is crucial for its detection. The partial discharge test, an induction withstand voltage test with partial discharge detection, is a key indicator of the structural reliability of a transformer's insulation system.

[0003] Currently, substation GIS real-time online partial discharge monitoring devices are primarily suitable for digital substations with voltage levels of 110 kV and above. They enable online partial discharge monitoring, analysis, and remote alarming, promoting the digitalization of substation maintenance. They feature high sensitivity, excellent stability, accurate judgment, comprehensive data analysis capabilities, support for local and remote alarming, and RS485 communication (which offers long and reliable communication distance). However, in practice, partial discharge testing for some transformers still requires workers to climb to the vicinity of the transformer with specialized discharge detection equipment and manually operate the detection probe. This method limits the control of the detection probe to the surrounding area, making testing difficult for transformers located at higher altitudes, and working at height poses certain risks.

[0004] In the prior art, a Chinese patent for a device and method for online monitoring of partial discharge of a transformer (publication number CN117028802B) is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: "A device and method for online monitoring of partial discharge of a transformer, wherein the monitoring device includes: an operating box, including a cover and a bottom box, the cover and the bottom box are hinged, a display screen is provided on the cover, and a storage slot, an operating slot and an operating panel are provided on the bottom box; a lifting assembly, including a lifting mechanism, an adapter, a first fixer and a second fixer, the lifting mechanism includes a lifter and a detection head provided on the lifter, the first fixer includes a suction cup, the second fixer includes two clamping plates, the first fixer and the second fixer are both detachably connected to the lifter, and the adapter is connected to the first fixer and the second fixer; a power mechanism, connected to the adapter, the power mechanism includes a first resetter, the first resetter is used to reset the power mechanism; this device can monitor the partial discharge of the transformer from a long distance."

[0005] The above solution is suitable for transformers installed at high places, such as those installed on electric poles. However, since the monitoring instrument needs to be extended to a farther height, the lever arm of the telescopic device increases accordingly, which greatly increases the difficulty of operation. Operators often need to make repeated adjustments to approach the target position, which is not only time-consuming but also difficult to ensure the accuracy of the adjustment. Moreover, the suction cup requires a certain amount of pressing force to be tightened (limited to smooth surfaces), but the increase in the lever arm of the above solution can easily cause the telescopic structure to bend. Secondly, due to the increase in the lever arm, any small shake or jitter at the operating point will cause a large deviation in the detection head, thereby increasing the difficulty of positioning. Finally, the longer lever arm makes the telescopic structure prone to deflection deformation (such as bending downward due to the gravity of the end), and swing or error accumulation caused by environmental factors, further reducing the monitoring accuracy. Summary of the Invention

[0006] The purpose of the present invention is to provide an online monitoring device for partial discharge of transformers with an adjustable bracket, so as to solve the problems of inconvenience in operation and inaccurate positioning caused by the long lever arm when remotely monitoring partial discharge of transformers using a telescopic structure in the prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: A transformer partial discharge online monitoring device with an adjustable bracket, wherein the transformer to be monitored is installed between two poles, and comprises a lifting assembly, a detection assembly and a control panel; it also comprises: a base; a climbing component, installed on one side of the base, for controlling the base to move along the pole to a height suitable for operation, the climbing component comprising two rollers with adjustable horizontal spacing and a climbing motor, the climbing motor can drive the two rollers to rotate, and by adjusting the two rollers to press against the pole, the device can adapt to poles with different spacings; an adjusting component, installed on the top of the base, and the lifting assembly is installed on the adjustable part of the adjusting component, and the detection assembly is adjusted to the position to be monitored by cooperating with the adjusting component and the lifting assembly; a positioning component, installed below the base, and provides stable support by pressing against the pole instead of the rollers; an obstacle crossing component, used to connect the positioning component and the base, and cooperate with the positioning component to overcome obstacles on the travel path.

[0008] By adopting the above technical solution and setting up climbing components, the coordinated rotation of rollers can be used to achieve climbing along the pole to a position close to the bottom of the transformer. The adjustable roller spacing can adapt to poles of different specifications. The cooperation of the spline shaft and the hollow shaft ensures stable transmission, and reliable contact with the pole is always maintained during the climbing process, achieving stable and safe high-altitude climbing, solving the operational difficulties of traditional telescopic structures when operating at high positions, and avoiding the problem of inaccurate positioning caused by shaking due to excessive force arms during operation.

[0009] A further improvement of the technical solution of the present invention is that: the climbing component also includes a partition fixedly connected to the inside of the base, and the inside of the base is divided into two chambers, an adjusting chamber and a transmission chamber, by the partition; first screws are symmetrically rotatably connected on both sides of the inner wall of the adjusting chamber, and the ends of the two first screws that are close to each other are fixedly connected, one end of one of the first screws extends to the outside of the base and is fixedly connected to a turning handle, and the outsides of the two first screws are threadedly connected to an adjusting block, and the adjusting block is slidably connected to the adjusting chamber; a driving bevel gear is rotatably connected to the adjusting block, and a spline groove is provided on the central axis of the driving bevel gear, and a spline shaft is rotatably connected between the two sides of the inner wall of the transmission chamber, the spline shaft passes through the two spline grooves, and each side of the spline shaft is in contact with each side of the inner wall of the spline groove, and two rollers are rotatably connected to one side of the two adjusting blocks respectively, the central axis of the roller extends to the inside of the transmission chamber and is fixedly connected to a driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear, the climbing motor is fixedly connected to one side of the base, and the output end of the climbing motor extends to the inside of the transmission chamber and is fixedly connected to the spline shaft.

[0010] By adopting the above technical solution, the climbing motor drives the spline shaft to rotate, and the spline shaft drives the hollow shaft to rotate through the spline groove of the hollow shaft. The driving bevel gear on the hollow shaft engages with the driven bevel gear of the roller center shaft, and finally drives the roller to rotate, realizing the lifting movement along the pole, so that the entire device can be lifted to the vicinity of the position to be monitored, and the detection component can be adjusted to the position to be monitored based on this position.

[0011] The further improvement of the technical solution of the present invention is that: the adjusting component includes a movable frame, a second screw is rotatably connected between the inner walls of the movable frame, an adjusting motor is fixedly connected to the outer side of the movable frame, the output end of the adjusting motor is fixedly connected to the end of the second screw, the external thread of the second screw is connected to a slide, and the slide is slidably connected to the inner wall of the movable frame; the top of the base is rotatably connected to the main shaft, and the top of the main shaft is fixedly connected to the slide; one side of the base is fixedly connected to a flip motor, and the output end of the flip motor is connected to the main shaft through a synchronous wheel and a synchronous belt transmission; the lifting assembly includes a linear module, the detection assembly is installed on the movable part of the lifting assembly, one side of the top of the movable frame is fixedly connected to a column, and a switching motor is fixedly installed on one side of the column, and the output end of the switching motor extends to the other side of the column and is fixedly connected to the fixed part of the lifting assembly.

[0012] By adopting the above technical solution, the detection component can be accurately delivered to any monitoring point of the transformer through multi-dimensional adjustment of the adjustment components in horizontal sliding, rotation, pitch and vertical lifting (in conjunction with the lifting component), solving the problem of limited monitoring position in the dual-pole layout and improving the adaptability of the equipment to monitoring different positions on different sides of the transformer.

[0013] A further improvement of the technical solution of the present invention is that: the detection component includes a movable plate fixedly connected to the movable part of the linear module, a strip groove is opened in the middle of the movable plate, a slide buckle is slidably connected inside the strip groove, an L-shaped plate is fixedly connected on one side of the slide buckle, a detection head is fixedly installed on the L-shaped plate, and a rack is fixedly connected on one side of the L-shaped plate; a U-shaped plate is fixedly connected on the movable plate, and a feed motor is fixedly connected to the outer side of the U-shaped plate, and the output end of the feed motor extends to the inside of the U-shaped plate and is fixedly connected to a transmission gear, and the transmission gear is meshed with the rack.

[0014] The above technical solution is adopted, by setting an L-shaped plate to ensure that its width is smaller than the gap of the transformer heat sink, and the detection head is installed on the L-shaped plate. During detection, the detection head is first controlled to reach the position to be detected, and then the feed motor is controlled to drive the transmission gear to rotate, so that the rack moves along a straight line, and drives the L-shaped plate and the detection head to move, thereby extending into the gap of the heat sink until it reaches the monitoring point; a camera is also installed on the L-shaped plate and electrically connected to the control panel. The control panel is electrically connected to the motor, detection head and camera in the solution through wires. The control panel is operated by the operator on the ground and has a display screen to display the image signal collected by the camera.

[0015] A further improvement of the technical solution of the present invention is that: the positioning component includes a positioning frame, both sides of the inner wall of the positioning frame are rotatably connected to the third screw, the two third screws are fixedly connected at one end thereof, a positioning motor is fixedly connected to one side of the outer wall of the positioning frame, the output end of the positioning motor extends to the interior of the positioning frame and is fixedly connected to the third screw, the outside of the third screw is threadedly connected to a positioning block, and a chuck assembly is provided on the positioning block.

[0016] By adopting the above technical solution, a structure is provided to "clamp" the pole, thereby providing auxiliary support to the base, thereby reducing damage to the climbing motor caused by the load.

[0017] A further improvement of the technical solution of the present invention is that the chuck assembly includes a guide rod fixedly connected between the two sides of the inner wall of the positioning frame, two guide grooves are symmetrically provided on the guide rod, the middle part of the guide groove is a straight groove, and both ends are quarter spiral grooves, a transfer groove is provided on one side of the positioning block, and through holes connected to the transfer groove are provided on both sides of the positioning block, and clamping blocks are sleeved on the outside of the guide rod and inside the transfer groove, and sliding balls are fixedly connected to the clamping blocks, and the sliding balls are slidably connected to the guide grooves.

[0018] Using the above technical solution, the clamping head assembly is configured as a flip-up clamping block. When clamping the pole, the clamping block is in a horizontal state and can contact the pole. When not clamping, it is in a horizontal state to achieve "storage" and avoid obstruction when the device as a whole moves upward.

[0019] A further improvement of the technical solution of the present invention is that a plurality of mutually parallel convex strips are symmetrically arranged on both sides of the clamping block, the convex strips are perpendicular to the guide rod at different planes, the convex strips are semi-cylindrical, and the convex strips are set to rubber material.

[0020] Using the above technical solution, the semi-cylindrical rubber ridges on the clamp block increase the friction with the surface of the pole. The layout of the ridges and the guide rods on different planes and perpendicular to each other can disperse the force and avoid slipping when climbing or fixing. The elastic properties of the rubber ridges can also adapt to the slight unevenness of the pole surface, improve the clamping friction, especially in humid or oily environments, it can still maintain stable clamping, further ensuring the safety of the equipment.

[0021] A further improvement of the technical solution of the present invention is that: the obstacle crossing component includes an adjusting seat fixedly connected to the outer wall of the base, the internal rotatable connection of the adjusting seat is connected to the fourth screw, the outer wall of the base is fixedly connected to the pushing motor, the output end of the pushing motor is fixedly connected to the fourth screw, the outer wall of the fourth screw is threadedly connected to a pushing block, the pushing block is slidably connected to the base, the base and the positioning frame are fixedly connected to a slide rail, the two slide rails are slidably connected to a slider, two telescopic rods are fixedly connected between the two sliders, the push block is fixedly connected to the middle of the telescopic rod, the two sliders are rotatably connected to a support plate, the two support plates are in a scissor structure and the middle is rotatably connected by a rotating shaft, one of the support plates is rotatably connected to the positioning frame at one end away from the base, and the other support plate is rotatably connected to the base at one end away from the positioning frame.

[0022] By adopting the above technical solution, a scissors structure is set up. Based on the auxiliary support structure (clamp) already set up in the above solution, when an obstacle such as a clamp appears in the roller's travel path, the above auxiliary support structure can temporarily provide support, and at the same time, the above roller can be moved in the direction away from the pole, and then the scissors structure is used to "split" so that the roller is pushed upward to cross the clamp and other obstacles. After the crossing is completed, the roller is used again to press against the pole, and then the clamp is controlled to move in the direction away from the pole, and then the scissors structure is controlled to refold, thereby driving the clamp to bypass the obstacle and complete the obstacle crossing.

[0023] A further improvement of the technical solution of the present invention is that one side of the adjustment block close to the roller is rotatably connected to an auxiliary wheel, the auxiliary wheel and the roller are exactly the same in shape, and the installation position is on the same vertical line.

[0024] With the above technical solution, the auxiliary wheels and rollers are symmetrically distributed on the same vertical line, forming multi-point contact with the surface of the pole. Combined with the spacing adjustment of the adjustment blocks, the lateral stability during climbing is enhanced, avoiding the situation where the two rollers in the solution support the movement and tilt.

[0025] A further improvement of the technical solution of the present invention is that a plurality of lightweight slots are provided on both the base and the positioning frame, two universal wheels are symmetrically fixedly connected to the bottom of the positioning frame, and a retractable pull rod structure is fixedly connected to the positioning frame.

[0026] The above technical solution is adopted to reduce the overall weight of the equipment by setting up a lightweight trough. The universal wheels and retractable pull rod facilitate the movement and transportation of the equipment on the ground, and the equipment can be transported and deployed without additional tools. The weight of the equipment is reduced and the portability is improved. The ground mobile structure enables the equipment to quickly reach different monitoring points, solving the problems of difficult transportation and low deployment efficiency of traditional monitoring equipment, and adapting to the inspection needs of multiple substations.

[0027] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art: 1. The present invention provides a climbing component, which can utilize the coordinated rotation of rollers to achieve climbing along the pole to a position close to the bottom of the transformer. The adjustable roller spacing can adapt to poles of different specifications. The cooperation of the spline shaft and the hollow shaft ensures stable transmission. During the climbing process, reliable contact with the pole is always maintained, achieving stable and safe high-altitude climbing, solving the operational difficulties of traditional telescopic structures when operating at high positions, and avoiding the problem of inaccurate positioning caused by shaking due to excessive force arms during operation.

[0028] 2. The present invention uses multi-dimensional adjustment of the adjustment components in horizontal sliding, rotation, pitching and vertical lifting (in conjunction with the lifting assembly) to accurately deliver the detection assembly to any monitoring point on the transformer. This solves the problem of limited monitoring positions in a dual-pole layout and improves the equipment's adaptability to monitoring different positions on different sides of the transformer.

[0029] 3. The present invention is capable of "clamping" the pole by arranging a clamping head assembly, so as to provide auxiliary support to the base during monitoring, thereby reducing damage to the load and the above-mentioned climbing motor. The clamping head assembly is configured as a flippable clamping block. When clamping the pole, the clamping block is in a horizontal state and can contact the pole. When not clamping, it is in a horizontal state to achieve "storage" and avoid obstruction when the overall upward movement of the device is prevented.

[0030] 4. The present invention sets a scissor structure and an auxiliary support structure (clamp) already set up based on the above scheme. When an obstacle such as a clamp appears in the roller's travel path, the auxiliary support structure temporarily provides support, and at the same time, the roller moves in the direction away from the pole. Then, the scissor structure is used to "split" so that the roller is pushed upward to cross the clamp and other obstacles. After the crossing is completed, the roller is used again to press against the pole. Then, the clamp is controlled to move in the direction away from the pole, and then the scissor structure is controlled to refold, thereby driving the clamp to bypass the obstacle and complete the obstacle crossing.

[0031] 5. The present invention reduces the overall weight of the equipment by setting a lightweight trough. The universal wheels and retractable pull rod facilitate the movement and transportation of the equipment on the ground, and the equipment can be transported and deployed without additional tools. The weight of the equipment is reduced and portability is improved. The ground mobile structure enables the equipment to quickly reach different monitoring points, solving the problems of difficult transportation and low deployment efficiency of traditional monitoring equipment, and meeting the inspection needs of multiple substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the structure of the present invention before climbing is completed; Figure 2 This is one of the structural diagrams of the transformer monitoring process of the present invention; Figure 3 This is the second structural diagram of the transformer monitoring process of the present invention; Figure 4 This is the third structural diagram of the transformer monitoring process of the present invention; Figure 5 This is the fourth structural diagram of the transformer monitoring process of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of the present invention as a whole from a first viewing angle; Figure 7 A schematic diagram of the overall three-dimensional structure of the present invention from a second viewing angle; Figure 8 A schematic diagram of the three-dimensional structure of the present invention as a whole from a third viewing angle; Figure 9 It is a structural schematic diagram of the movable frame of the present invention; Figure 10 Schematic diagram of the structure of the detection component of the present invention; Figure 11 Schematic diagram of the installation structure of the roller of the present invention; Figure 12 Schematic diagram of the structure of the chuck assembly of the present invention in two states; Figure 13 It is a schematic diagram of the disassembled structure of the chuck assembly of the present invention.

[0034] In the figure: 1. Base; 101. Transmission cavity; 102. Adjustment cavity; 2. Positioning frame; 301. First screw; 302. Adjustment block; 303. Roller; 304. Active bevel gear; 305. Driven bevel gear; 306. Spline groove; 307. Spline shaft; 308. Climbing motor; 401. Spindle; 402. Flip motor; 403. Slide; 404. Adjustment motor; 405. Movable frame; 406. Second screw; 407. Column; 408. Switching motor; 5. Linear module; 601. Movable plate; 602. L-shaped plate; 603. U-shaped plate; 604. Feed motor Machine; 605, transmission gear; 606, rack; 607, detection head; 608, strip groove; 609, slide buckle; 701, third screw; 702, positioning block; 703, adapter groove; 704, clamping block; 705, guide rod; 706, guide groove; 707, sliding ball; 708, convex strip; 709, positioning motor; 801, slide rail; 802, slider; 803, support plate; 804, adjustment seat; 805, fourth screw; 806, push block; 807, push motor; 808, telescopic rod; 9, auxiliary wheel; 11, lightweight groove; 12, pull rod structure; 13, universal wheel. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the embodiments.

[0036] Example 1 like Figures 1-12 As shown, the present invention provides an online monitoring device for partial discharge of transformers with an adjustable bracket. The transformer to be monitored is installed between two poles, and includes a lifting component, a detection component and a control panel; it also includes: a base 1; a climbing component, installed on one side of the base 1, and used to control the base 1 to move along the pole to a height suitable for operation, the climbing component includes two rollers 303 with adjustable horizontal spacing and a climbing motor 308, and the climbing motor 308 can drive the two rollers 303 to rotate. By adjusting the two rollers 303 to press against the pole, it can adapt to poles with different spacings; an adjusting component, installed on the top of the base 1, and the lifting component is installed on the adjustable part of the adjusting component. The detection component is adjusted to the position to be monitored by cooperating with the adjusting component and the lifting component; a positioning component, installed below the base 1, and provides stable support by pressing against the pole instead of the roller 303; an obstacle crossing component, used to connect the positioning component and the base 1, and cooperate with the positioning component to overcome obstacles on the travel path.

[0037] Specifically, the climbing component also includes a partition fixedly connected to the inside of the base 1. The inside of the base 1 is divided into two chambers, an adjustment chamber 102 and a transmission chamber 101, by the partition. The two sides of the inner wall of the adjustment chamber 102 are symmetrically rotatably connected with the first screw 301. The two first screws 301 are fixedly connected at one end thereof. One end of one of the first screws 301 extends to the outside of the base 1 and is fixedly connected to a handle. The outsides of the two first screws 301 are both threadedly connected with an adjustment block 302, and the adjustment block 302 is slidably connected to the adjustment chamber 102. The adjustment blocks 302 are both rotatably connected to the active bevel gear 304, and the central axis of the active bevel gear 304 is provided with a The spline groove 306 and the two sides of the inner wall of the transmission chamber 101 are rotatably connected with a spline shaft 307, the spline shaft 307 passes through the two spline grooves 306, and the side surfaces of the spline shaft 307 are in contact with the sides of the inner wall of the spline groove 306. The two rollers 303 are rotatably connected to one side of the two adjustment blocks 302 respectively. The central axis of the roller 303 extends to the interior of the transmission chamber 101 and is fixedly connected to the driven bevel gear 305. The driven bevel gear 305 is meshed with the driving bevel gear 304. The climbing motor 308 is fixedly connected to one side of the base 1, and the output end of the climbing motor 308 extends to the interior of the transmission chamber 101 and is fixedly connected to the spline shaft 307.

[0038] In this embodiment, by setting up a climbing component, the coordinated rotation of the rollers 303 can be used to achieve climbing along the pole to a position close to the bottom of the transformer. The adjustable spacing of the rollers 303 can adapt to poles of different specifications. The cooperation of the spline shaft 307 and the hollow shaft ensures stable transmission, and reliable contact with the pole is always maintained during the climbing process, achieving stable and safe high-altitude climbing, solving the operational difficulties of traditional telescopic structures when operating at high positions, and avoiding the problem of inaccurate positioning caused by shaking due to excessive force arms during operation.

[0039] During operation, the two first screws 301 are driven to rotate synchronously by turning the handle, so that the adjustment block 302 slides in the adjustment cavity 102, and the spacing between the rollers 303 on both sides is adjusted to adapt to poles of different diameters; during climbing, the spline shaft 307 is driven to rotate by the climbing motor 308, and the spline shaft 307 drives the hollow shaft to rotate through the spline groove 306 of the hollow shaft, and the active bevel gear 304 on the hollow shaft is engaged with the driven bevel gear 305 of the central axis of the roller 303, and finally drives the roller 303 to rotate, realizing the lifting and lowering movement along the pole, so that the entire device can be lifted to the vicinity of the position to be monitored, and the detection component is adjusted to the position to be monitored based on this position. During monitoring, the detection component is adjusted to the position to be detected through the cooperation of the adjustment component and the lifting component, thereby improving the accuracy of the monitoring position positioning.

[0040] It should be noted that, in actual operation, there is a lower lead on one side of the pole, so the above-mentioned roller 303 can be tightened from both the side where the two poles are close to each other and the side where they are far away from each other. The corresponding roller 303 can climb upward along the axis of the side where the two poles are close to each other or the side where they are far away from each other, thereby avoiding the lower lead.

[0041] Example 2 like Figures 1-6As shown, based on Example 1, the present invention provides a technical solution: preferably, the adjustment component includes a movable frame 405, the inner wall of the movable frame 405 is rotatably connected to the second screw 406, the outer side of the movable frame 405 is fixedly connected to the adjustment motor 404, the output end of the adjustment motor 404 is fixedly connected to the end of the second screw 406, the outer thread of the second screw 406 is connected to the slide 403, and the slide 403 is slidably connected to the inner wall of the movable frame 405; the top of the base 1 is rotatably connected to the main shaft 401, the main shaft 40 1 is fixedly connected to the slide 403; a flip motor 402 is fixedly connected to one side of the base 1, and the output end of the flip motor 402 is connected to the main shaft 401 through a synchronous wheel and a synchronous belt transmission; the lifting assembly includes a linear module 5, the detection assembly is installed on the movable part of the lifting assembly, one side of the top of the movable frame 405 is fixedly connected to the column 407, and a switching motor 408 is fixedly installed on one side of the column 407, and the output end of the switching motor 408 extends to the other side of the column 407 and is fixedly connected to the fixed part of the lifting assembly.

[0042] Since the transformer has four sides, if it is necessary to climb again every time a side is monitored, the amount of operation will inevitably increase. Therefore, the adjustment component should be able to meet the requirements of adjusting the detection component to any position on the four sides; In this embodiment, by adjusting the components in multiple dimensions such as horizontal sliding, rotation, pitching, and vertical lifting (in conjunction with the lifting assembly), the detection assembly can be accurately delivered to any monitoring point of the transformer, solving the problem of limited monitoring positions in the dual-pole layout and improving the equipment's adaptability to monitoring different positions on different sides of the transformer.

[0043] Specifically, after the base 1 is moved to a position relatively close to the bottom of the transformer, the second screw 406 is driven to rotate by adjusting the motor 404, so that the slide 403 slides in the movable frame 405, but the slide 403 is fixedly connected to the main shaft 401, that is, the movable frame 405 can slide along the axial direction of the second screw 406 through the above adjustment. The key point of the design here is that the slide 403 does not slide, but the entire movable frame 405 slides, the purpose of which is to avoid hitting the pole when the position is subsequently changed; the flip motor 402 is controlled to rotate, and the same The step wheel and the synchronous belt drive the main shaft 401 to rotate, causing the slide 403 to rotate around the top of the base 1, and the movable frame 405 also rotates accordingly. According to the adjustment of the position of the above-mentioned movable frame 405, the rotation center of the movable frame 405 changes accordingly, and the movable frame 405 can be turned (that is, the movable path of the movable frame 405 changes, and this rotation is 90° each time); then, by controlling the switching motor 408 to drive the lifting assembly (linear module 5) to rotate, the lifting assembly can be controlled to be in a vertical state or a horizontal state, correspondingly meeting the vertical or horizontal adjustment requirements.

[0044] The following is an analysis of the above adjustment process based on specific situations: by Figure 1 The state shown is the initial state, in which the spindle 401 rotates at an angle of 0°, the long side of the movable frame 405 is parallel to the long side of the base 1, the switching motor 408 rotates at an angle of 0°, and the corresponding linear module 5 is in a vertical state; When the monitoring point is on the side where the base 1 is located, refer to Figure 2 , first control the flip motor 402 to rotate, so that the movable frame 405 flips 90°, so that the movable frame 405 is not perpendicular to the base 1, and the rotation angle of the switching motor 408 is 0°, and the corresponding linear module 5 is still in a vertical state. In this state, the detection component is controlled to move in the vertical direction by the linear module 5, and the detection component is controlled to move in the horizontal direction by the movement of the movable frame 405, so that the coverage of the plane on this side can be covered. It should be noted that there is a situation where the electric pole blocks the movable frame 405 during the flipping process of the movable frame 405. Therefore, before flipping, the movable frame 405 is first moved to the base 1 at the end of the stroke to ensure that the swept diameter of the movable frame 405 between the two electric poles is reduced during the flipping process, so that the movable frame 405 does not touch the electric poles during the flipping process; When the monitoring point is rotated 90° clockwise (looking down) relative to the side where the base 1 is located, refer to Figure 3 In this state, the linear module 5 is controlled to flip to a horizontal state by switching the motor 408. In this state, the linear module 5 is no longer controlled to lift, but it is controlled to move in the horizontal direction. In the vertical direction, the lifting is controlled by the climbing component. It should be noted that, since the base 1 is very close to the transformer in the initial state, there is insufficient space for upward movement. Therefore, the connection point between the linear module 5 and the column 407 in the scheme is at the upper part of the column 407. That is to say, when the linear module 5 rotates to the horizontal state, the linear module 5 is above the transformer, and the subsequent climbing component only needs to control the base 1 to move downward. When the monitoring point is rotated 180° clockwise relative to the side where the base 1 is located, refer to Figure 4 ; When the monitoring point is rotated 270° clockwise relative to the side where the base 1 is located, refer to Figure 5 .

[0045] like Figure 7 、 Figure 8 and Figure 10As shown, preferably, the detection component includes a movable plate 601 fixedly connected to the movable part of the linear module 5, a strip groove 608 is opened in the middle of the movable plate 601, and a slider 609 is slidably connected inside the strip groove 608, and one side of the slider 609 is fixedly connected to an L-shaped plate 602, and a detection head 607 is fixedly installed on the L-shaped plate 602, and one side of the L-shaped plate 602 is fixedly connected to a rack 606; a U-shaped plate 603 is fixedly connected to the movable plate 601, and the outer side of the U-shaped plate 603 is fixedly connected to a feed motor 604, and the output end of the feed motor 604 extends to the inside of the U-shaped plate 603 and is fixedly connected to a transmission gear 605, and the transmission gear 605 is meshed with the rack 606.

[0046] Since the transformer is provided with heat sinks all around, the gaps between the heat sinks are narrow and extend outwards for a certain distance, and the above solution cannot meet the requirement of extending the detection head 607 into the above narrow gaps; In this embodiment, an L-shaped plate 602 is provided to ensure that its width is smaller than the gap of the transformer heat sink. The detection head 607 is installed on the L-shaped plate 602. During detection, the detection head 607 is first controlled to reach the position to be detected, and then the feed motor 604 is controlled to work, driving the transmission gear 605 to rotate, so that the rack 606 moves along a straight line, and drives the L-shaped plate 602 and the detection head 607 to move, thereby extending into the gap of the heat sink until it reaches the monitoring point; a camera is also installed on the L-shaped plate 602 and is electrically connected to the control panel. The control panel is electrically connected to the motor, detection head 607 and camera in the scheme through wires. The control panel is operated by an operator on the ground and has a display screen to display the image signal collected by the camera.

[0047] Example 3 like Figure 8 、 Figure 12 and Figure 13 As shown, based on Example 2, the present invention provides a technical solution: preferably, the positioning component includes a positioning frame 2, and both sides of the inner wall of the positioning frame 2 are rotatably connected with a third screw 701, and the two third screws 701 are fixedly connected at one end close to each other, and a positioning motor 709 is fixedly connected to one side of the outer wall of the positioning frame 2, and the output end of the positioning motor 709 extends to the interior of the positioning frame 2 and is fixedly connected to the third screw 701, and the outside of the third screw 701 is threadedly connected with a positioning block 702, and a chuck assembly is provided on the positioning block 702.

[0048] During the monitoring process after the position adjustment is completed, the base 1 does not need to move. In this state, the base 1 is completely fixed by the roller 303 and the pole, and the central axis of the roller 303 is locked by the climbing motor 308. In other words, the output shaft of the climbing motor 308 needs to bear the load continuously, which affects the life of the climbing motor 308. In this embodiment, a structure is provided to "clamp" the pole, thereby providing auxiliary support to the base 1, thereby reducing damage to the climbing motor 308 caused by the load; Specifically, when the detection head 607 is adjusted to the target position, the positioning motor 709 is controlled to work, driving the two third screws 701 to rotate, so that the two positioning blocks 702 move toward the side that is closer or farther away, and further, the clamping assembly is pressed against the pole. The above-mentioned clamping method includes pressing from the side where the two poles are farther away to the side where they are closer and from the side where the two poles are closer to the side where they are farther away, aiming to avoid the situation where there is a lower lead. After pressing, part of the load is shared by the friction between the clamping assembly and the pole, thereby reducing the load on the climbing motor 308; the above-mentioned clamping action is released when adjusting the position.

[0049] It should be noted that the detection head 607 is a partial discharge detection device. It can detect and display partial discharge (PD) phenomena in electrical equipment in real time, identifying PD signals generated by typical defects such as metal particles, floating potential, internal corona, internal defects in solid insulation, and surface contamination. Using a fully digital, high-speed PD signal acquisition and processing chip, the sensor's detection frequency band reaches 3 GHz, with optional sub-bands within that range. The standing wave ratio (SWR) in the detection center frequency band is <2.0. The device also provides preliminary localization of PDs, with an accuracy of within a specific air chamber in a GIS device or a specific range within a transformer. UHF signals attenuate rapidly during propagation, and the amplitude of the discharge signal varies significantly with distance from the discharge source. Therefore, by comparing the amplitude of the UHF discharge signal, a rough location of the discharge can be determined. The detection head 607 is electrically connected to a control panel on the ground, which displays monitoring data and controls the operation of the detection head 607 and various motors.

[0050] like Figure 8 、 Figure 12 and Figure 13 As shown, preferably, the chuck assembly includes a guide rod 705 fixedly connected between the two sides of the inner wall of the positioning frame 2, and two guide grooves 706 are symmetrically provided on the guide rod 705. The middle part of the guide groove 706 is a straight groove, and both ends are quarter spiral grooves. A transfer groove 703 is provided on one side of the positioning block 702, and through holes connected to the transfer groove 703 are provided on both sides of the positioning block 702. A clamping block 704 is sleeved on the outside of the guide rod 705 and located inside the transfer groove 703, and a sliding ball 707 is fixedly connected to the clamping block 704, and the sliding ball 707 is slidably connected to the guide groove 706.

[0051] In the above solution, the clamp assembly is pressed against the pole to provide auxiliary support, which also requires the clamp assembly to extend horizontally for a certain distance. However, the actual situation is relatively complicated. This extended structure may get caught on cables or other facilities during the upward movement. In this embodiment, the clamp assembly is configured as a flippable clamp block 704. When clamping the pole, the clamp block 704 is in a horizontal state and can contact the pole. When not clamping, it is in a horizontal state to achieve "storage" and avoid obstruction when the device as a whole moves upward.

[0052] Specifically, the central axis of the clamping block 704 is a hollow structure, and has a sliding ball 707 inside. The sliding ball 707 is slidably connected to the guide groove 706, and the middle part of the guide groove 706 is a straight groove, and the two ends are quarter spiral grooves. That is to say, when the clamping block 704 moves to the two end positions of the guide groove 706, it will flip downward 90° to be in a vertical state. When it moves to the middle area, the clamping block 704 rotates to a horizontal state under the transmission of the sliding ball 707 and the guide groove 706.

[0053] like Figure 7 、 Figure 12 and Figure 13 As shown, preferably, a plurality of mutually parallel ridges 708 are symmetrically provided on both sides of the clamping block 704. The ridges 708 are all perpendicular to the guide rod 705 in different planes. The ridges 708 are semi-cylindrical and made of rubber.

[0054] In this embodiment, the rubber semi-cylindrical ridges 708 on the clamping block 704 increase the friction with the surface of the pole. The ridges 708 and the guide rod 705 are arranged perpendicular to each other on different planes to disperse the force and avoid slipping when climbing or fixing. The elastic properties of the rubber ridges 708 can also adapt to the slight unevenness of the pole surface, thereby improving the clamping friction and maintaining stable clamping, especially in humid or oily environments, thereby further ensuring the safety of the equipment.

[0055] Example 4 like Figure 4 、 Figure 5 and Figure 6As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, the obstacle crossing component includes an adjustment seat 804 fixedly connected to the outer wall of the base 1, and the internal rotatable connection of the adjustment seat 804 is a fourth screw 805, the outer wall of the base 1 is fixedly connected to a pushing motor 807, the output end of the pushing motor 807 is fixedly connected to the fourth screw 805, the outer wall of the fourth screw 805 is threadedly connected to a push block 806, the push block 806 is slidably connected to the base 1, the base 1 and the positioning frame 2 are both fixedly connected with a slide rail 801, the two slide rails 801 are both slidably connected to a slider 802, two telescopic rods 808 are fixedly connected between the two sliders 802, the push block 806 is fixedly connected to the middle part of the telescopic rod 808, and the two sliders 802 are rotatably connected to a support plate 803. The two support plates 803 are in a scissors structure and are rotatably connected in the middle by a rotating shaft. One end of the support plate 803 away from the base 1 is rotatably connected to the positioning frame 2, and the other end of the support plate 803 away from the positioning frame 2 is rotatably connected to the base 1.

[0056] In actual operation, multiple clamps may be set along the axial direction on the pole to fix the lower lead. When this happens, the climbing of the roller 303 of this solution is hindered. In this embodiment, a scissors-type structure is provided, based on the auxiliary support structure (clamp 704) provided in the above-mentioned scheme, so that when an obstacle such as a clamp appears in the travel path of the roller 303, the auxiliary support structure can temporarily provide support, and at the same time, the roller 303 can be moved in the direction away from the pole, and then the scissors-type structure is used to "split" so that the roller 303 is pushed upward to cross the obstacle such as the clamp, and after the crossing is completed, the roller 303 is used again to press against the pole, and then the clamp 704 is controlled to move in the direction away from the pole, and then the scissors-type structure is controlled to refold, thereby driving the clamp to bypass the obstacle and complete the obstacle crossing.

[0057] During operation, the push motor 807 is controlled to rotate, driving the fourth screw 805 to rotate, thereby moving the push block 806. The telescopic rod 808 drives the sliders 802 at both ends to move along the slide rails 801. During this process, the two slide rails 801 will move synchronously toward the side away from or toward each other, thereby pushing the base 1 and the positioning frame 2 toward the side away from or toward each other (i.e., the above-mentioned forking and folding action). The telescopic rod 808 extends or shortens accordingly during the above process. This is equivalent to temporarily providing support for the roller 303 when it encounters an obstacle, retracting the roller 303, and then using the above-mentioned scissor-type structure to push the roller 303 upward. After passing the obstacle, the roller 303 is then pressed against the pole, and the clamp 704 is then retracted. The scissor-type structure folds, allowing the clamp 704 to also pass the obstacle.

[0058] like Figure 7 、 Figure 8 and Figure 11As shown, preferably, one side of the adjustment block 302 close to the roller 303 is rotatably connected to an auxiliary wheel 9, and the auxiliary wheel 9 has the same shape as the roller 303, and the installation position is on the same vertical line.

[0059] In this embodiment, the auxiliary wheels 9 and the rollers 303 are symmetrically distributed on the same vertical line, forming multi-point contact with the surface of the pole. Cooperating with the spacing adjustment of the adjustment block 302, the lateral stability during climbing is enhanced, and the situation in which the two rollers 303 support the movement in the scheme is avoided.

[0060] like Figure 7 and Figure 8 As shown, preferably, a plurality of lightweight slots 11 are provided on the base 1 and the positioning frame 2 , two universal wheels 13 are symmetrically fixedly connected to the bottom of the positioning frame 2 , and a retractable pull rod structure 12 is fixedly connected to the positioning frame 2 .

[0061] In this embodiment, a lightweight slot 11 is provided to reduce the overall weight of the equipment. The universal wheels 13 and the retractable pull rod facilitate the movement and transportation of the equipment on the ground, and the equipment can be transported and deployed without additional tools. The weight of the equipment is reduced and the portability is improved. The ground mobile structure enables the equipment to quickly reach different monitoring points, solving the problems of difficult transportation and low deployment efficiency of traditional monitoring equipment, and meeting the inspection needs of multiple substations.

[0062] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A transformer partial discharge online monitoring device with an adjustable bracket, wherein the transformer to be monitored is installed between two poles, comprising a lifting assembly, a detection assembly and a control panel; characterized in that: Also includes: Base (1); A climbing component is installed on one side of the base (1) and is used to control the base (1) to move along the electric pole to a height suitable for operation. The climbing component includes two rollers (303) with adjustable horizontal spacing and a climbing motor (308). The climbing motor (308) can drive the two rollers (303) to rotate. By adjusting the two rollers (303) to press against the electric pole, the climbing component can adapt to electric poles with different spacings. An adjusting component is mounted on the top of the base (1), and the lifting assembly is mounted on an adjustable portion of the adjusting component, and the detection assembly is adjusted to a position to be monitored by cooperating between the adjusting component and the lifting assembly; A positioning component is installed below the base (1) and provides stable support by pressing against the electric pole to replace the roller (303); The obstacle-crossing component is used to connect the positioning component and the base (1) and to cross obstacles on the travel path by cooperating with the positioning component.

2. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 1, characterized in that: The climbing component further comprises a partition fixedly connected to the interior of the base (1), the interior of the base (1) being divided into two chambers, an adjustment chamber (102) and a transmission chamber (101), by the partition, first screw rods (301) being symmetrically rotatably connected to the inner wall of the adjustment chamber (102), the two first screw rods (301) being fixedly connected at one end thereof, one end of one of the first screw rods (301) extending to the exterior of the base (1) and being fixedly connected to a turning handle, the exteriors of the two first screw rods (301) being threadedly connected to an adjustment block (302), the adjustment block (302) being slidably connected to the adjustment chamber (102); the adjustment block (302) being rotatably connected to an active bevel gear (304), the central axis of the active bevel gear (304) being provided with a spline groove ( 306), a spline shaft (307) is rotatably connected between the two sides of the inner wall of the transmission chamber (101), the spline shaft (307) passes through the two spline grooves (306), and each side of the spline shaft (307) is in contact with each side of the inner wall of the spline groove (306), the two rollers (303) are rotatably connected to one side of the two adjustment blocks (302), the central axis of the roller (303) extends to the interior of the transmission chamber (101) and is fixedly connected to a driven bevel gear (305), the driven bevel gear (305) is meshed with the driving bevel gear (304), the climbing motor (308) is fixedly connected to one side of the base (1), and the output end of the climbing motor (308) extends to the interior of the transmission chamber (101) and is fixedly connected to the spline shaft (307).

3. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 2, characterized in that: The adjusting component comprises a movable frame (405), a second screw (406) is rotatably connected between the inner walls of the movable frame (405), an adjusting motor (404) is fixedly connected to the outer side of the movable frame (405), an output end of the adjusting motor (404) is fixedly connected to the end of the second screw (406), an external thread of the second screw (406) is connected to a slide (403), and the slide (403) is slidably connected to the inner wall of the movable frame (405); the top of the base (1) is rotatably connected to the main shaft (401), and the top of the main shaft (401) is fixedly connected to the slide (403); a flip motor (402) is fixedly connected to one side of the base (1), and the output end of the flip motor (402) is connected to the main shaft (401) through a synchronous wheel and a synchronous belt transmission. The lifting assembly includes a linear module (5), the detection assembly is installed on the movable part of the lifting assembly, one side of the top of the movable frame (405) is fixedly connected to a column (407), one side of the column (407) is fixedly installed with a switching motor (408), and the output end of the switching motor (408) extends to the other side of the column (407) and is fixedly connected to the fixed part of the lifting assembly.

4. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 3, characterized in that: The detection component comprises a movable plate (601) fixedly connected to the movable part of the linear module (5), a strip groove (608) is opened in the middle of the movable plate (601), a slide buckle (609) is slidably connected inside the strip groove (608), an L-shaped plate (602) is fixedly connected to one side of the slide buckle (609), a detection head (607) is fixedly mounted on the L-shaped plate (602), and a rack (606) is fixedly connected to one side of the L-shaped plate (602); a U-shaped plate (603) is fixedly connected to the movable plate (601), a feed motor (604) is fixedly connected to the outer side of the U-shaped plate (603), an output end of the feed motor (604) extends to the inside of the U-shaped plate (603) and is fixedly connected to a transmission gear (605), and the transmission gear (605) is meshed with the rack (606).

5. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 4, characterized in that: The positioning component includes a positioning frame (2), both sides of the inner wall of the positioning frame (2) are rotatably connected to third screws (701), the two ends of the third screws (701) close to each other are fixedly connected, one side of the outer wall of the positioning frame (2) is fixedly connected to a positioning motor (709), the output end of the positioning motor (709) extends to the interior of the positioning frame (2) and is fixedly connected to the third screw (701), the outside of the third screw (701) is threadedly connected to a positioning block (702), and a chuck assembly is provided on the positioning block (702).

6. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 5, characterized in that: The chuck assembly includes a guide rod (705) fixedly connected between the two sides of the inner wall of the positioning frame (2), two guide grooves (706) are symmetrically provided on the guide rod (705), the middle part of the guide groove (706) is a straight groove, and both ends are quarter spiral grooves, a transfer groove (703) is provided on one side of the positioning block (702), and through holes connected to the transfer groove (703) are provided on both sides of the positioning block (702), and a clamping block (704) is sleeved on the outside of the guide rod (705) and inside the transfer groove (703), and a sliding ball (707) is fixedly connected to the clamping block (704), and the sliding ball (707) is slidably connected to the guide groove (706).

7. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 6, characterized in that: A plurality of mutually parallel convex strips (708) are symmetrically arranged on both sides of the clamping block (704), and the convex strips (708) are all perpendicular to the guide rod (705) at different planes. The convex strips (708) are semi-cylindrical and are made of rubber material.

8. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 7, characterized in that: The obstacle crossing component includes an adjustment seat (804) fixedly connected to the outer wall of the base (1), the internal rotation of the adjustment seat (804) is connected to the fourth screw (805), the outer wall of the base (1) is fixedly connected to a push motor (807), the output end of the push motor (807) is fixedly connected to the fourth screw (805), the outer wall of the fourth screw (805) is threadedly connected to a push block (806), the push block (806) is slidably connected to the base (1), the base (1) and the positioning frame (2) are both fixedly connected to a slide rail (801), the two slide rails (80 1) are both slidably connected with a slider (802), two telescopic rods (808) are fixedly connected between the two sliders (802), the push block (806) is fixedly connected to the middle of the telescopic rod (808), and the two sliders (802) are both rotatably connected with a support plate (803), the two support plates (803) are in a scissor-fork structure and the middle parts are rotatably connected through a rotating shaft, one end of one of the support plates (803) away from the base (1) is rotatably connected to the positioning frame (2), and the other end of the support plate (803) away from the positioning frame (2) is rotatably connected to the base (1).

9. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 8, characterized in that: One side of the regulating block (302) close to the roller (303) is rotatably connected to an auxiliary wheel (9), and the auxiliary wheel (9) and the roller (303) are identical in shape and are installed on the same vertical line.

10. The transformer partial discharge online monitoring device with an adjustable bracket according to claim 9, characterized in that: The base (1) and the positioning frame (2) are both provided with a plurality of lightweight slots (11); the bottom of the positioning frame (2) is symmetrically fixedly connected to two universal wheels (13); and a retractable pull rod structure (12) is fixedly connected to the positioning frame (2).

Images