A transformer partial discharge on-line monitoring device with adjustable support

Abstract

The application discloses a transformer partial discharge on-line monitoring device with an adjustable support, and relates to the technical field of discharge detection. The device comprises a lifting assembly, a detection assembly and a control panel, and further comprises a base, a climbing component for controlling the base to travel along a power pole to a suitable operating height, an adjusting component for adjusting the detection assembly to a position to be monitored by cooperation of the adjusting component and the lifting assembly, a positioning component for providing stable support by abutting against the power pole to replace rollers, and an obstacle surmounting component for surmounting obstacles on a travel path by cooperation with the positioning component. The climbing component is arranged to realize climbing along the power pole to a position close to the transformer below by cooperation of the rollers, reliable contact with the power pole is maintained during the climbing process, stable and safe climbing at a high position is realized, the operation difficulty of a traditional telescopic structure during operation at a high position is solved, and the problem of inaccurate positioning caused by shaking due to too large force arm during the operation process is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of discharge detection, and particularly relates to a transformer partial discharge on-line monitoring device with an adjustable support. BACKGROUND

[0002] A transformer is an important device in a power system, and its safe and stable operation is crucial to the power system. Once a fault occurs, it will cause significant losses to the national economy. A transformer substation comprehensive monitoring platform undertakes multiple on-line monitoring tasks, including monitoring of micro-water density, partial discharge, lightning arrester and GIS switch room environment of the GIS switch, as well as on-line monitoring of transformer oil chromatography and transformer partial discharge. The system uses the latest sensor technology and computer technology, has high measurement accuracy, data can be transmitted remotely, and is easy to install and use, etc., and is suitable for various voltage grade SF6 circuit breakers, transformers and GIS produced by different manufacturers, and can meet the needs of power distribution network automation and equipment condition-based maintenance. It is an important technical equipment for realizing on-line monitoring and condition-based maintenance of power distribution network automation electrical equipment, and is also an essential hardware infrastructure for smart grid construction. Studies have shown that most of the transformer faults are insulation faults, and partial discharge as a form of insulation fault representation is of great significance to its detection. Partial discharge test is an induced voltage withstand test with partial discharge detection, and is one of the important indicators for determining the reliability of the structure of the transformer insulation system.

[0003] At present, the GIS partial discharge real-time on-line monitoring device of the transformer substation is mainly suitable for 110kV and above voltage grade digital transformer substations, and can realize partial discharge on-line monitoring, analysis, remote alarm and other functions, and promote the digitalization of transformer maintenance. It has the characteristics of high sensitivity, good stability, accurate judgment, perfect data analysis function, support for on-site and remote alarm, and use of RS485 communication (long communication distance and reliable), etc. However, in actual operation, the partial discharge detection of some transformers still needs workers to carry special discharge detection devices to climb near the transformer, and manually control the detection probe for detection. In this way, the workers can only control the detection probe in the surrounding area, and for the transformers in higher areas, the detection difficulty is great, and there is a certain risk in high-altitude operation.

[0004] A Chinese patent (publication number CN117028802B) proposes a device and method for transformer partial discharge online monitoring to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: "A device and method for transformer partial discharge online monitoring, wherein the monitoring device comprises an operation box including a cover plate and a bottom box hinged together, a display screen is provided on the cover plate, a receiving groove, an operation groove, and an operation 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 detachably connected to the lifter, 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 for resetting the power mechanism; the device can remotely monitor the partial discharge of the transformer."

[0005] The above-mentioned solution is suitable for transformers installed at high places, such as on power poles. However, the force arm of the telescopic device increases as the monitoring instrument needs to be extended to a remote high place, resulting in a significant increase in operation difficulty. The operator often needs to adjust repeatedly to approach the target position, which not only consumes time but also makes it difficult to ensure the accuracy of the adjustment. Moreover, the suction cup needs a certain pressing force to be tightly sucked (limited to smooth surfaces), but the increased force arm of the above-mentioned solution easily causes the telescopic structure to bend. Secondly, due to the increased force arm, any small shaking or shaking of the operation point will cause a large deviation of the detection head position, thereby increasing the positioning difficulty. Finally, the long force arm makes the telescopic structure prone to deflection deformation (such as bending deformation under the action of the end gravity), which is affected by environmental factors to produce swinging or error accumulation, further reducing the monitoring accuracy. SUMMARY

[0006] The purpose of the present application is to provide a transformer partial discharge online monitoring device with an adjustable support to solve the problem of inconvenient operation and inaccurate positioning caused by the excessive length of the force arm when using a telescopic structure to remotely monitor the partial discharge of a transformer in the prior art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present application is:

[0008] A transformer partial discharge online monitoring device with an adjustable bracket, wherein the transformer to be monitored is installed between two utility poles, includes a lifting assembly, a detection assembly, and a control panel; further includes: a base; a climbing component, installed on one side of the base, for controlling the base to travel along the utility pole to a suitable operating height, the climbing component including two horizontally adjustable rollers and a climbing motor, the climbing motor driving the two rollers to rotate, and adjusting the two rollers to press against the utility pole to adapt to different spacing of utility poles; an adjusting component, installed on the top of the base, the lifting assembly being installed on the adjustable part of the adjusting component, the detection assembly being adjusted to the position to be monitored by the cooperation of the adjusting component and the lifting assembly; a positioning component, installed below the base, providing stable support by pressing against the utility pole instead of the rollers; and an obstacle-crossing component, for connecting the positioning component and the base, for crossing obstacles on the travel path by cooperating with the positioning component.

[0009] By adopting the above technical solution and setting up climbing components, the rollers can be used to climb along the pole to a position close to the transformer. The adjustable roller spacing can adapt to poles of different specifications. The cooperation between the spline shaft and the hollow shaft ensures stable transmission and maintains reliable contact with the pole at all times during the climbing process, achieving stable and safe climbing at heights. This solves the operational difficulties of traditional telescopic structures when working at high positions and avoids the problem of inaccurate positioning caused by swaying due to excessive lever arm during operation.

[0010] A further improvement of the technical solution of the present invention is that: the climbing component also includes a partition fixedly connected inside the base. The interior of the base is divided into two chambers by the partition: an adjustment chamber and a transmission chamber. The two sides of the inner wall of the adjustment chamber are symmetrically rotatably connected to first screws. The two first screws are fixedly connected at their close ends. One end of one of the first screws extends to the outside of the base and is fixedly connected to a throttle handle. The outside of both first screws is threadedly connected to an adjustment block, which is slidably connected to the adjustment chamber. Each adjustment block is rotatably connected to a driving bevel gear. A spline groove is formed on the central shaft of the driving bevel gear. 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. Each side of the spline shaft is in contact with each side of the inner wall of the spline groove. Two rollers are rotatably connected to one side of the two adjustment blocks respectively. The central shaft of the rollers extends into the interior of the transmission chamber and is fixedly connected to a driven bevel gear. The driven bevel gear meshes with the driving bevel gear. The climbing motor is fixedly connected to one side of the base. The output end of the climbing motor extends into the interior of the transmission chamber and is fixedly connected to the spline shaft.

[0011] Adopting the technical scheme, the spline shaft is driven to rotate by the climbing motor, 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 meshes with the driven bevel gear of the roller center shaft, and finally the roller is driven to rotate, so that the lifting movement along the electric pole is realized, thereby the device as a whole can be lifted to the vicinity of the position to be monitored, and the detection assembly is adjusted to the position to be monitored based on the position.

[0012] Further improvement of the technical scheme of the application is that the adjusting component comprises a movable frame, a second screw is rotatably connected between inner walls of the movable frame, an adjusting motor is fixedly connected to the outer side of the movable frame, an output end of the adjusting motor is fixedly connected to the end of the second screw, a sliding seat is threadedly connected to the outside of the second screw, and the sliding seat is slidingly connected to the inner walls of the movable frame; a main shaft is rotatably connected to the top of the base, the top of the main shaft is fixedly connected to the sliding seat; a turnover motor is fixedly connected to one side of the base, and the output end of the turnover motor is drivingly connected to the main shaft through a synchronous wheel and a synchronous belt; the lifting assembly comprises a linear module, the detection assembly is mounted on the movable part of the lifting assembly, a stand is fixedly connected to one side of the top of the movable frame, a switching motor is fixedly mounted on one side of the stand, and the output end of the switching motor extends to the other side of the stand and is fixedly connected to the fixed part of the lifting assembly.

[0013] Adopting the technical scheme, through multi-dimensional adjustment of the adjusting component in horizontal sliding, rotation, pitch and vertical lifting (in cooperation with the lifting assembly), the detection assembly can be accurately sent to any monitoring point of the transformer, thereby solving the problem of limited monitoring position in the double-pole layout and improving the adaptability of the equipment to monitoring different positions on different sides of the transformer.

[0014] Further improvement of the technical scheme of the application is that the detection assembly comprises a movable plate fixedly connected to the movable part of the linear module, a strip-shaped slot is formed in the middle of the movable plate, a sliding buckle is slidingly connected in the strip-shaped slot, an L-shaped plate is fixedly connected to one side of the sliding buckle, a detection head is fixedly mounted on the L-shaped plate, and a rack is fixedly connected to one side of the L-shaped plate; a U-shaped plate is fixedly connected to the movable plate, a feeding motor is fixedly connected to the outer side of the U-shaped plate, an output end of the feeding motor extends to the inside of the U-shaped plate and is fixedly connected to a transmission gear, and the transmission gear is meshingly connected with the rack.

[0015] The technical scheme is characterized in that the L-shaped plate is arranged, the width of the L-shaped plate is smaller than the gap of the heat dissipation fins of the transformer, the detection head is arranged on the L-shaped plate, and when detection is performed, the detection head is first controlled to reach a position to be detected, then the feed motor is controlled to work, the transmission gear is driven to rotate, the rack is driven to move along a straight line, the L-shaped plate and the detection head are driven to move, and thus the detection head is inserted into the gap of the heat dissipation fins and reaches the monitoring point; the camera is further arranged on the L-shaped plate and electrically connected with the control panel, the control panel is electrically connected with the motor, the detection head and the camera through wires, and the control panel is operated by an operator on the ground and is provided with a display screen to display the image signals collected by the camera.

[0016] Further improvement of the technical scheme of the present application is that the positioning component comprises a positioning frame, two third screws are rotatably connected to the inner wall of the positioning frame, one end of the two third screws is fixedly connected, 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 into the inside of the positioning frame and is fixedly connected with the third screw, positioning blocks are threadedly connected to the outside of the third screw, and a chuck assembly is arranged on the positioning block.

[0017] The above technical scheme is adopted, and the structure can be used to "clamp" the electric pole, thereby assisting in supporting the base, and reducing the damage of the load to the climbing motor.

[0018] Further improvement of the technical scheme of the present application is that the chuck assembly comprises a guide rod fixedly connected between the inner walls of the positioning frame, two guide grooves are symmetrically arranged on the guide rod, the middle part of the guide groove is a straight groove, the two ends are quarter helical grooves, an adapter groove is arranged on one side of the positioning block, through holes are arranged on the two sides of the positioning block and communicate with the adapter groove, a clamp block is sleeved on the outside of the guide rod and located in the adapter groove, a sliding bead is fixedly connected to the clamp block, and the sliding bead is slidably connected with the guide groove.

[0019] The above technical scheme is adopted, the chuck assembly is arranged as a reversible clamp block, the clamp block is in a horizontal state when clamping the electric pole and can contact the electric pole, and the clamp block is in a horizontal state when not clamping the electric pole, so as to realize "storage", and the device as a whole is prevented from being hindered when moving upward.

[0020] Further improvement of the technical scheme of the present application is that a plurality of parallel convex strips are symmetrically arranged on the two sides of the clamp block, the convex strips are out-of-plane perpendicular to the guide rod, the convex strips are in a semicylindrical shape, and the convex strips are made of rubber.

[0021] The above technical scheme is adopted, the rubber semicylindrical convex strips on the clamp block increase the friction force with the surface of the electric pole, the layout of the out-of-plane perpendicular convex strips and the guide rod can disperse stress and prevent slipping during climbing or fixing, the elastic property of the rubber convex strips can also adapt to slight unevenness of the surface of the electric pole, the clamping friction force is improved, the stable clamping can be maintained in a humid or oily environment, and the safety of the equipment is further ensured.

[0022] Further improvement of the technical scheme of the present application is that the obstacle crossing component comprises an adjusting seat fixedly connected to the outer side wall of the base, a fourth screw rod is rotatably connected to the inside of the adjusting seat, a jacking motor is fixedly connected to the outer wall of the base, the output end of the jacking motor is fixedly connected to the fourth screw rod, a push block is threadedly connected to the outer wall of the fourth screw rod, the push block is slidably connected to the base, a slide rail is fixedly connected to the base and the positioning frame, a slide block is slidably connected to the two slide rails, two telescopic rods are fixedly connected between the two slide blocks, the push block is fixedly connected to the middle part of the telescopic rods, a support plate is rotatably connected to the two slide blocks, the two support plates are in a scissor structure and are rotatably connected by a rotating shaft in the middle part, one end of one of the support plates away from the base is rotatably connected to the positioning frame, and the other end of the other support plate away from the positioning frame is rotatably connected to the base.

[0023] By adopting the above technical scheme, the auxiliary support structure (clamping block) is provided based on the above scheme, so that when the obstacle such as a hoop appears in the rolling path, the support can be temporarily provided by the auxiliary support structure, and at the same time, the roller is moved away from the electric pole, and then the scissor structure is "opened" to push the roller upward to cross the obstacle such as the hoop, and after crossing, the roller is used to abut against the electric pole again, then the clamping block is controlled to move away from the electric pole, and the scissor structure is controlled to be folded again to drive the clamping head to pass the obstacle and complete the obstacle crossing.

[0024] Further improvement of the technical scheme of the present application is that one side of the adjusting block close to the roller is rotatably connected with an auxiliary wheel, the auxiliary wheel is completely same in shape with the roller, and the installation positions are on the same vertical line.

[0025] By adopting the above technical scheme, the auxiliary wheel and the roller are symmetrically distributed on the same vertical line, and form multiple-point contact with the surface of the electric pole, which, in combination with the spacing adjustment of the adjusting block, enhances the lateral stability during climbing and avoids the skewing of the two rollers during supporting and moving.

[0026] Further improvement of the technical scheme of the present application is that a plurality of light-weight grooves are formed in the base and the positioning frame, two universal wheels are symmetrically fixedly connected to the bottom of the positioning frame, and a telescopic pull rod structure is fixedly connected to the positioning frame.

[0027] By adopting the above technical scheme, the light-weight grooves are provided to reduce the overall weight of the equipment, the universal wheels and the telescopic pull rod facilitate the movement and transportation of the equipment on the ground, and the equipment can be carried and deployed without additional tools; the self-weight of the equipment is reduced, the portability is improved, the ground movement structure enables the equipment to quickly reach different monitoring points, and solves the problems of difficult carrying and low deployment efficiency of traditional monitoring equipment, and meets the needs of multi-zone inspection of the transformer substation.

[0028] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0029] 1. The present application can utilize the cooperation of the rollers to realize climbing along the pole to a position close to the transformer below by setting the climbing component, and the adjustable roller spacing can adapt to different specifications of the pole, and the cooperation of the spline shaft and the hollow shaft ensures stable transmission, and reliable contact with the pole is maintained during the climbing process, thereby realizing stable and safe climbing at a high position, solving the operation problem of the traditional telescopic structure at a high position, and avoiding the problem of inaccurate positioning caused by shaking during the operation process due to the excessively large force arm.

[0030] 2. The present application can accurately send the detection component to any monitoring point of the transformer through the multi-dimensional adjustment of the adjusting component in horizontal sliding, rotation, pitch and vertical lifting (cooperating with the lifting assembly), thereby solving the problem of limited monitoring position in the double-pole layout and improving the adaptability of the equipment to monitoring different positions on different sides of the transformer.

[0031] 3. The present application can "clamp" the pole by setting the chuck assembly, thereby providing auxiliary support to the base during monitoring, reducing the damage of the load to the above-mentioned climbing motor, and the chuck assembly is set as a reversible clamp block, which is in a horizontal state when clamping the pole and can contact the pole, and is in a horizontal state when not clamping to realize "storage", thereby avoiding the obstruction of the overall upward movement of the device.

[0032] 4. The present application sets a scissor structure based on the auxiliary support structure (clamp block) already set according to the above scheme, so that when obstacles such as hoops appear in the roller travel path, the above-mentioned auxiliary support structure can provide temporary support, and at the same time, the above-mentioned rollers are moved away from the pole, and then the scissor structure is "opened" to push the rollers upwards to overcome the obstacles such as hoops, and after overcoming, the rollers are used again to abut against the pole, and then the clamp block is controlled to move away from the pole, and the scissor structure is controlled to fold again, thereby driving the chuck to bypass the obstacle and complete the obstacle crossing.

[0033] 5. The present application sets a lightening groove to reduce the overall weight of the equipment, and the universal wheel and the telescopic pull rod facilitate the movement and transportation of the equipment on the ground, and the equipment can be carried and deployed without additional tools; the self-weight of the equipment is reduced, the portability is improved, the ground moving structure enables the equipment to quickly reach different monitoring points, solves the problems of difficult carrying and low deployment efficiency of the traditional monitoring equipment, and adapts to the multi-zone inspection demand of the transformer substation. BRIEF DESCRIPTION OF DRAWINGS

[0034] The present application will be further described below in conjunction with the drawings.

[0035] Figure 1Structure diagram of the whole invention before climbing;

[0036] Figure 2 Structure diagram of the whole invention before climbing;

[0037] Figure 3 Structure diagram of the whole invention before climbing;

[0038] Figure 4 Structure diagram of the whole invention before climbing;

[0039] Figure 5 Structure diagram of the whole invention before climbing;

[0040] Figure 6 Structure diagram of the whole invention before climbing;

[0041] Figure 7 Structure diagram of the whole invention before climbing;

[0042] Figure 8 Structure diagram of the whole invention before climbing;

[0043] Figure 9 Structure diagram of the whole invention before climbing;

[0044] Figure 10 Structure diagram of the whole invention before climbing;

[0045] Figure 11 Structure diagram of the whole invention before climbing;

[0046] Figure 12 Structure diagram of the whole invention before climbing;

[0047] Figure 13 Structure diagram of the whole invention before climbing.

[0048] In the diagram: 1. Base; 101. Transmission cavity; 102. Adjustment cavity; 2. Positioning frame; 301. First screw; 302. Adjustment block; 303. Roller; 304. Driving bevel gear; 305. Driven bevel gear; 306. Spline groove; 307. Spline shaft; 308. Climbing motor; 401. Main shaft; 402. Tilting 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. Feeding power supply. 605. Transmission gear; 606. Rack; 607. Detection head; 608. Strip groove; 609. Sliding buckle; 701. Third screw; 702. Positioning block; 703. Adapter groove; 704. Clamping block; 705. Guide rod; 706. Guide groove; 707. Sliding ball; 708. Protruding strip; 709. Positioning motor; 801. Slide rail; 802. Slider; 803. Support plate; 804. Adjustment seat; 805. Fourth screw; 806. Push block; 807. Pushing motor; 808. Telescopic rod; 9. Auxiliary wheel; 11. Lightweight groove; 12. Tie rod structure; 13. Universal wheel. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the embodiments.

[0050] Example 1

[0051] like Figures 1-12 As shown, this invention provides an online monitoring device for partial discharge of a transformer with an adjustable bracket. The transformer to be monitored is installed between two utility poles. The device includes a lifting assembly, a detection assembly, and a control panel. It also includes: a base 1; a climbing component installed on one side of the base 1, used to control the base 1 to travel along the utility pole to a suitable operating height; the climbing component includes two horizontally adjustable rollers 303 and a climbing motor 308, the climbing motor 308 can drive the two rollers 303 to rotate, and can adapt to different spacing between utility poles by adjusting the two rollers 303 to press against the utility pole; an adjusting component installed on the top of the base 1, the lifting assembly installed on the adjustable part of the adjusting component, the detection assembly being adjusted to the required monitoring position by the cooperation of the adjusting component and the lifting assembly; a positioning component installed below the base 1, providing stable support by pressing against the utility pole instead of the rollers 303; and an obstacle-crossing component connecting the positioning component and the base 1, used to cross obstacles on the travel path by cooperating with the positioning component.

[0052] Specifically, the climbing component further comprises a partition fixedly connected inside the base 1, the inside of the base 1 is divided into two chambers, namely an adjusting cavity 102 and a transmission cavity 101 by the partition, two first screw rods 301 are symmetrically and rotatably connected to the two sides of the inner wall of the adjusting cavity 102, the two first screw rods 301 are fixedly connected at one end close to each other, one end of one of the first screw rods 301 extends to the outside of the base 1 and is fixedly connected with a handle, the two first screw rods 301 are both threadedly connected with an adjusting block 302, the adjusting block 302 is slidably connected with the adjusting cavity 102; the adjusting block 302 is rotatably connected with a driving bevel gear 304, a spline groove 306 is formed in the center shaft of the driving bevel gear 304, a spline shaft 307 is rotatably connected between the two sides of the inner wall of the transmission cavity 101, the spline shaft 307 penetrates through the two spline grooves 306, the sides of the spline shaft 307 are in close contact with the inner wall of the spline groove 306, two rollers 303 are rotatably connected to one side of the two adjusting blocks 302 respectively, the center shaft of the roller 303 extends to the inside of the transmission cavity 101 and is fixedly connected with a driven bevel gear 305, the driven bevel gear 305 is meshingly connected with the driving bevel gear 304, a climbing motor 308 is fixedly connected to one side of the base 1, the output end of the climbing motor 308 extends to the inside of the transmission cavity 101 and is fixedly connected with the spline shaft 307.

[0053] In the embodiment, by setting the climbing component, the rollers 303 are used to realize climbing along the electric pole to a position close to the transformer, the adjustable distance between the rollers 303 is suitable for electric poles of different specifications, the cooperation of the spline shaft 307 and the hollow shaft ensures stable transmission, reliable contact with the electric pole is maintained during the climbing process, stable and safe climbing at a high position is realized, the operation difficulty of the traditional telescopic structure at a high position is solved, and the problem of inaccurate positioning caused by shaking during the operation process due to too large force arm is avoided.

[0054] During work, the handle is rotated to drive the two first screw rods 301 to rotate synchronously, the adjusting block 302 is slid in the adjusting cavity 102, the distance between the two rollers 303 is adjusted to adapt to electric poles of different diameters; during climbing, the climbing motor 308 drives the spline shaft 307 to rotate, the spline shaft 307 drives the hollow shaft to rotate through the spline groove 306 of the hollow shaft, the driving bevel gear 304 on the hollow shaft meshes with the driven bevel gear 305 of the roller 303, and finally drives the roller 303 to rotate, realizing lifting movement along the electric pole, so that the device as a whole can be lifted to a position close to the position to be monitored, and the detection assembly is adjusted to the position to be monitored based on the position, the detection assembly is adjusted to the position to be detected by cooperation of the adjusting component and the lifting assembly during monitoring, and the accuracy of positioning of the monitoring position is improved.

[0055] It needs to be specially pointed out that, due to the existence of the lower lead in the actual operation process, the above-mentioned roller 303 can be tightly abutted from the side of the two poles close to each other and the side of the two poles far away from each other, and the corresponding roller 303 can climb up along the axis of the side of the two poles close to each other or the side of the two poles far away from each other as the path, thereby avoiding the lower lead.

[0056] Embodiment 2

[0057] As Figures 1-6 shown, on the basis of embodiment 1, the application provides a technical solution: preferably, the adjusting component comprises a movable frame 405, a second screw rod 406 is rotationally 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, the output end of the adjusting motor 404 is fixedly connected to the end portion of the second screw rod 406, a sliding seat 403 is threadedly connected to the outside of the second screw rod 406, and the sliding seat 403 is slidingly connected with the inner walls of the movable frame 405; a main shaft 401 is rotationally connected to the top of the base 1, and the top of the main shaft 401 is fixedly connected with the sliding seat 403; a turnover motor 402 is fixedly connected to one side of the base 1, and the output end of the turnover motor 402 is drivingly connected with the main shaft 401 through a synchronous wheel and a synchronous belt; the lifting assembly comprises a linear module 5, and the detection assembly is mounted on the movable part of the lifting assembly; a stand 407 is fixedly connected to one side of the top of the movable frame 405, a switching motor 408 is fixedly installed on one side of the stand 407, and the output end of the switching motor 408 extends to the other side of the stand 407 and is fixedly connected with the fixed part of the lifting assembly.

[0058] Since the transformer has four sides, if each pair of one side needs to be climbed again when monitoring, the operation amount will inevitably increase, so the adjusting component should be able to meet the requirement of adjusting the detection assembly to any position on the four sides;

[0059] In this embodiment, through the multi-dimensional adjustment of the adjusting component in horizontal sliding, rotation, pitch and vertical lifting (cooperating with the lifting assembly), the detection assembly can be accurately sent to any monitoring point of the transformer, solving the problem of limited monitoring position in the double-pole layout, and improving the adaptability of the equipment to monitor different positions on different sides of the transformer.

[0060] Specifically, after the base 1 is moved to a position relatively close to the transformer, the second screw 406 is rotated by adjusting the motor 404, causing the slide 403 to slide within the movable frame 405. However, the slide 403 is fixedly connected to the main shaft 401. This means that the movable frame 405 can slide along the axial direction of the second screw 406 through the above adjustment. The key design point here is that the slide 403 does not slide, but rather the entire movable frame 405 slides. The purpose is to prevent it from hitting the pole during subsequent position changes. The rotation of the flipping motor 402 is controlled, and through the same... The step wheel and synchronous belt drive the main shaft 401 to rotate, causing the slide 403 to rotate around the top of the base 1. The movable frame 405 also rotates accordingly. By adjusting the position of the movable frame 405, the rotation center of the movable frame 405 changes, allowing the movable frame 405 to be turned (that is, the movement 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 component (linear module 5) to rotate, the lifting component can be controlled to be in a vertical or horizontal state, which can meet the vertical or horizontal adjustment requirements.

[0061] The above adjustment process will be analyzed in detail below using specific examples:

[0062] by Figure 1 The state shown is the initial state, in which the main spindle 401 rotates at 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 0°, and the corresponding linear module 5 is in a vertical state.

[0063] When the monitoring point is located on the side where base 1 is located, refer to Figure 2 First, control the rotation of the flip motor 402 to rotate the movable frame 405 by 90°, making the movable frame 405 perpendicular to the base 1. Then, switch the rotation angle of the motor 408 to 0°, so that the corresponding linear module 5 is still in a vertical state. In this state, the linear module 5 controls the detection component to move in the vertical direction, and the movement of the movable frame 405 controls the movement of the detection component in the horizontal direction, thereby covering the plane on that side. It should be noted that there may be a situation where the movable frame 405 is blocked by the pole during the flipping process. Therefore, before flipping, the movable frame 405 is moved to the base 1 at the end of its stroke to ensure that the sweeping diameter of the movable frame 405 between the two poles is reduced during the flipping process, so that the movable frame 405 will not hit the pole during the flipping process.

[0064] When the monitoring point is rotated 90° clockwise (viewed from above) relative to the side where base 1 is located, refer to Figure 3, the state, by switching motor 408 work control linear module 5 to flip to the horizontal state, the state is no longer by linear module 5 control lift, but control its in horizontal direction activity, and in vertical direction, it is by climbing component control lift, need to be particularly pointed out that, due to the initial state base 1 and extremely close to the transformer, the space is insufficient for upward activity, therefore the scheme linear module 5 and the connecting point of column 407 is in the upper part of column 407, that is, when linear module 5 rotates to the horizontal state, linear module 5 is above the transformer, the subsequent climbing component only needs to control the base 1 downward activity;

[0065] Monitoring point is in the relative base 1 side clockwise rotation 180°, refer to Figure 4 ;

[0066] Monitoring point is in the relative base 1 side clockwise rotation 270°, refer to Figure 5 .

[0067] As Figure 7 , Figure 8 and Figure 10 , preferably, the detection assembly comprises a movable plate 601 fixedly connected to the movable part of the linear module 5, a strip-shaped slot 608 is formed in the middle part of the movable plate 601, a slide buckle 609 is slidably connected inside the strip-shaped slot 608, an L-shaped plate 602 is fixedly connected to one side of the slide buckle 609, a detection head 607 is fixedly installed 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, a transmission gear 605 is fixedly connected to the output end of the feed motor 604 and extends into the inside of the U-shaped plate 603, and the transmission gear 605 is meshingly connected with the rack 606.

[0068] Because the transformer is surrounded by fins, the gap between the fins is narrow and extends outward for a certain distance, and the above scheme cannot meet the requirement of extending the detection head 607 into the above narrow gap;

[0069] In the embodiment, the L-shaped plate 602 is provided, the width of which is ensured to be less than the gap of the transformer fins, the detection head 607 is installed on the L-shaped plate 602, during detection, the detection head 607 is first controlled to reach the detection position, then the feed motor 604 is controlled to work, the transmission gear 605 is driven to rotate, the rack 606 is driven to move linearly, the L-shaped plate 602 and the detection head 607 are driven to move, thereby extending into the gap between the fins and reaching the monitoring point; a camera is also installed on the L-shaped plate 602 and is electrically connected with the control panel, the control panel is electrically connected with the motor, the detection head 607 and the camera in the scheme through wires, the control panel is operated by the operator on the ground and has a display screen to display the image signals collected by the camera.

[0070] Embodiment 3

[0071] As Figure 8 , Figure 12 and Figure 13 As shown in FIG. 2, the application provides a technical solution based on Embodiment 2: preferably, the positioning component comprises a positioning frame 2, two third screws 701 are rotationally connected to the inner wall of the positioning frame 2, the ends of the two third screws 701 close to each other are fixedly connected, a positioning motor 709 is fixedly connected to one side of the outer wall of the positioning frame 2, the output end of the positioning motor 709 extends to the inside of the positioning frame 2 and is fixedly connected with the third screw 701, positioning blocks 702 are threadedly connected to the outside of the third screw 701, and a chuck assembly is arranged on the positioning block 702.

[0072] In the monitoring process after completing the position adjustment, the base 1 does not need to move, and in this state, the base 1 is completely fixed by being extruded by the rollers 303 and the electric pole, and the central shaft of the rollers 303 is locked by the climbing motor 308, that is, the output shaft of the climbing motor 308 needs to continuously bear the load, thereby affecting the service life of the climbing motor 308;

[0073] In this embodiment, the structure is arranged to “clamp” the electric pole, thereby assisting in supporting the base 1, thereby reducing the damage of the load to the above-mentioned climbing motor 308;

[0074] Specifically, when adjusting the detection head 607 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 towards or away from each other, and further, the chuck assembly abuts against the electric pole. The abutting mode of the above-mentioned chuck assembly includes two modes of abutting from the side away from each other to the side close to each other and abutting from the side close to each other to the side away from each other, aiming to avoid the existence of the lead wire, and after abutting, part of the load is shared by the friction between the clamping assembly and the electric pole, thereby reducing the load on the climbing motor 308; the above-mentioned clamping action is released when adjusting the position.

[0075] It should be noted that the detection head 607 is a partial discharge detection device. The local discharge phenomenon in the power equipment can be detected and displayed in real time, and the partial discharge signals generated by typical defects such as metal particles, suspended potential, internal corona, internal defects of solid insulation, and surface dirt of solid insulation can be determined; The sensor detection frequency band can reach 3GHz, and the sub-frequency band therebetween can be selected as needed; The detection center frequency band standing wave ratio is <2.0. Moreover, the device provides a preliminary positioning function for partial discharge, and the positioning accuracy is a certain gas chamber of GIS equipment or a certain range in the transformer. The UHF signal propagation process attenuates relatively fast, and the amplitude of the discharge signal is significantly different at different distances from the discharge source. Therefore, the amplitude of the UHF discharge signal can be compared to roughly locate the discharge. The detection head 607 is electrically connected to the control panel on the ground, and the control panel can display monitoring data and control the detection head 607 and each motor.

[0076] As shown in Figure 8 、 Figure 12 and Figure 13 , preferably, the clamp head assembly includes a guide rod 705 fixedly connected between the inner walls of the positioning frame 2, two guide grooves 706 are symmetrically formed on the guide rod 705, the middle part of the guide groove 706 is a straight groove, and the two ends are quarter spiral grooves. A transition groove 703 is formed on one side of the positioning block 702, and a through hole is formed on both sides of the positioning block 702 and communicates with the transition groove 703. The outer part of the guide rod 705 and the inside of the transition groove 703 are both sleeved with a clamping block 704, the clamping block 704 is fixedly connected with a sliding bead 707, and the sliding bead 707 is in sliding connection with the guide groove 706.

[0077] In the above scheme, the clamp head assembly abuts against the electric pole to assist in supporting, which also makes the clamp head assembly in the scheme need to extend horizontally by a distance, and the actual situation is relatively complex. This extension structure may be hung on the cable or other facilities during upward movement;

[0078] In this embodiment, the clamp head assembly is provided as a reversible clamping block 704. When clamping the electric pole, the clamping block 704 is in a horizontal state and can contact the electric pole, and when not clamping, the clamping block 704 is in a horizontal state to realize "storage", avoiding the device being hindered when moving upward as a whole.

[0079] Specifically, the center axis of the clamping block 704 is a hollow structure and has a sliding bead 707 inside, the sliding bead 707 is in sliding connection with the guide groove 706, the middle part of the guide groove 706 is a straight groove, and the two ends are quarter spiral grooves. That is, when the clamping block 704 moves to the two end positions of the guide groove 706, it will be flipped down by 90° to be in a vertical state, and when it moves to the middle area, the clamping block 704 rotates to a horizontal state under the transmission of the sliding bead 707 and the guide groove 706.

[0080] As Figure 7 , Figure 12 and Figure 13 shown, preferably, the two sides of the clamp block 704 are symmetrically provided with a plurality of parallel convex strips 708, the convex strips 708 are all out-of-plane perpendicular to the guide rod 705, the convex strips 708 are semicylindrical, and the convex strips 708 are made of rubber.

[0081] In this embodiment, the rubber semicylindrical convex strips 708 on the clamp block 704 increase the friction with the surface of the pole, the out-of-plane perpendicular layout of the convex strips 708 can disperse the force, avoiding slipping when climbing or fixing; the elastic properties of the rubber convex strips 708 can also adapt to the slight unevenness of the pole surface, improve the clamping friction, and still maintain stable clamping in a wet or oily environment, further ensuring the safety of the equipment.

[0082] Embodiment 4

[0083] As Figure 4 , Figure 5 and Figure 6 shown, on the basis of embodiment 3, the application provides a technical solution: preferably, the obstacle crossing component includes an adjusting seat 804 fixedly connected to the outer side wall of the base 1, a fourth screw rod 805 rotatably connected inside the adjusting seat 804, a pushing motor 807 fixedly connected to the outer wall of the base 1, the output end of the pushing motor 807 fixedly connected to the fourth screw rod 805, a pushing block 806 threadedly connected to the outer wall of the fourth screw rod 805, the pushing block 806 slidingly connected to the base 1, the base 1 and the positioning frame 2 both fixedly connected with sliding rails 801, the two sliding rails 801 both slidingly connected with sliding blocks 802, two telescopic rods 808 fixedly connected between the two sliding blocks 802, the pushing block 806 fixedly connected to the middle part of the telescopic rod 808, two support plates 803 rotatably connected to the two sliding blocks 802, the two support plates 803 in a scissor structure and rotatably connected through a rotating shaft in the middle part, one end of the support plate 803 away from the base 1 rotatably connected with the positioning frame 2, and the other end of the support plate 803 away from the positioning frame 2 rotatably connected with the base 1.

[0084] In actual operation, multiple hoops may be provided on the pole along the axial direction to fix the down lead, and when this situation occurs, the roller 303 of the present scheme has an obstacle in climbing;

[0085] In the embodiment, the auxiliary support structure (the clamping block 704) is arranged based on the above-mentioned scheme, so that when the roller 303 encounters an obstacle such as a hoop in the running path, the auxiliary support structure can temporarily provide support, and at the same time, the roller 303 is moved away from the electric pole, and then the roller 303 is pushed upward by the scissor structure to cross the obstacle such as the hoop, and after crossing, the roller 303 is used to abut against the electric pole again, then the clamping block 704 is moved away from the electric pole, and the scissor structure is folded again, so as to drive the clamping head to pass the obstacle and complete the obstacle crossing.

[0086] In operation, the pushing motor 807 is controlled to drive the fourth screw 805 to rotate, so that the pushing block 806 moves, and the telescopic rod 808 drives the sliding blocks 802 at both ends to move along the slide rails 801, and in the process, the two slide rails 801 move away from or close to each other, so as to drive the base 1 and the positioning frame 2 to move away from or close to each other (i.e., the above-mentioned unfolding and folding actions), and in the above-mentioned process, the telescopic rod 808 is elongated or shortened. It is equivalent to that when the roller 303 encounters an obstacle, the clamping block 704 temporarily provides support, the roller 303 is retracted, and after the roller 303 is pushed upward by the scissor structure to cross the obstacle, the roller 303 is used to abut against the electric pole again, then the clamping block 704 is retracted, and the scissor structure is folded, so that the clamping block 704 also crosses the obstacle.

[0087] As shown in Figure 7 , Figure 8 and Figure 11 , preferably, the adjusting block 302 is rotationally connected with an auxiliary wheel 9 on the side close to the roller 303, the auxiliary wheel 9 is completely the same as the roller 303 in shape, and is installed at the same vertical line.

[0088] In the embodiment, the auxiliary wheel 9 and the roller 303 are symmetrically distributed on the same vertical line, and form multiple-point contact with the surface of the electric pole, cooperate with the spacing adjustment of the adjusting block 302, enhance the lateral stability during climbing, and avoid the skewing of the two rollers 303 during supporting and running.

[0089] As shown in Figure 7 and Figure 8 , preferably, the base 1 and the positioning frame 2 are provided with a plurality of light-weight grooves 11, the bottom of the positioning frame 2 is fixedly connected with two universal wheels 13, and the positioning frame 2 is fixedly connected with a telescopic pull rod structure 12.

[0090] In the embodiment, the lightening groove 11 is arranged to reduce the overall weight of the device, the universal wheel 13 and the telescopic pull rod facilitate the movement and transportation of the device on the ground, and the device can be carried and deployed without additional tools; the self-weight of the device is reduced, the portability is improved, the ground movement structure enables the device to quickly reach different monitoring points, and solves the problems of difficult carrying and low deployment efficiency of the traditional monitoring device, and meets the needs of substation multi-area inspection.

[0091] The above has made a detailed description of the application in general, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the application are within the protection scope of the application.

Claims

1. An online monitoring device for partial discharge of a transformer 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) to control the base (1) to travel along the pole to a suitable operating height. The climbing component includes two horizontally adjustable rollers (303) 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 pole, it can adapt to poles with different spacing. An adjustment component is installed on the top of the base (1), and the lifting assembly is installed on the adjustable part of the adjustment component. The detection component is adjusted to the position to be monitored by the cooperation of the adjustment component and the lifting assembly. A positioning component is installed below the base (1) and provides stable support by abutting the electric rod instead of the roller (303); the positioning component includes a positioning frame (2), on both sides of the inner wall of the positioning frame (2) a third screw (701) is rotatably connected, the two third screws (701) are fixedly connected at their close ends, a positioning motor (709) is fixedly connected to one side of the outer wall of the positioning frame (2), the output end of the positioning motor (709) extends into the interior of the positioning frame (2) and is fixedly connected to the third screw (701), and a positioning block (702) is threadedly connected to the outside of the third screw (701), and a clamp assembly is provided on the positioning block (702); An obstacle-crossing component is used to connect the positioning component and the base (1) to cross obstacles on the travel path by cooperating with the positioning component; The obstacle-crossing component includes an adjusting seat (804) fixedly connected to the outer wall of the base (1). A fourth screw (805) is rotatably connected inside the adjusting seat (804). A push motor (807) is fixedly connected to the outer wall of the base (1). The output end of the push motor (807) is fixedly connected to the fourth screw (805). A push block (806) is threadedly connected to the outer wall of the fourth screw (805). The push block (806) is slidably connected to the base (1). Slide rails (801) are fixedly connected to both the base (1) and the positioning frame (2). The two slide rails (801) are... 1) Each of the two sliders (802) is slidably connected to a slider (802), and 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). Each of the two sliders (802) is rotatably connected to a support plate (803). The two support plates (803) are in a scissor structure and are rotatably connected in the middle by a pivot. 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).

2. The transformer partial discharge online monitoring device with adjustable bracket according to claim 1, characterized in that: The climbing component also includes a partition fixedly connected inside the base (1). The interior of the base (1) is divided into two chambers by the partition: an adjustment chamber (102) and a transmission chamber (101). First screws (301) are symmetrically rotatably connected to both sides of the inner wall of the adjustment chamber (102). The two first screws (301) are fixedly connected at their closest ends. One end of one of the first screws (301) extends to the outside of the base (1) and is fixedly connected to a throttle handle. Adjustment blocks (302) are threadedly connected to the outside of both first screws (301). The adjustment blocks (302) are slidably connected to the adjustment chamber (102). Each adjustment block (302) is rotatably connected to a drive bevel gear (304). A spline groove is formed on the central shaft of the drive bevel gear (304). 306), a spline shaft (307) is rotatably connected between the two sides of the inner wall of the transmission cavity (101). The spline shaft (307) passes through two spline grooves (306). Each side of the spline shaft (307) is in contact with each side of the inner wall of the spline groove (306). Two rollers (303) are rotatably connected to one side of two adjusting blocks (302). The central axis of the roller (303) extends into the interior of the transmission cavity (101) and is fixedly connected to a driven bevel gear (305). The driven bevel gear (305) meshes with the driving bevel gear (304). The climbing motor (308) is fixedly connected to one side of the base (1). The output end of the climbing motor (308) extends into the interior of the transmission cavity (101) and is fixedly connected to the spline shaft (307).

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

4. The transformer partial discharge online monitoring device with adjustable bracket according to claim 3, characterized in that: The detection assembly includes a movable plate (601) fixedly connected to the movable part of the linear module (5). A strip groove (608) is provided in the middle of the movable plate (601). A sliding buckle (609) is slidably connected inside the strip groove (608). An L-shaped plate (602) is fixedly connected to one side of the sliding buckle (609). A detection head (607) is fixedly installed on the L-shaped plate (602). 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 outside of the U-shaped plate (603). The output end of the feed motor (604) extends into the interior of the U-shaped plate (603) and is fixedly connected to a transmission gear (605). The transmission gear (605) meshes with the rack (606).

5. The transformer partial discharge online monitoring device with adjustable bracket according to claim 4, characterized in that: The clamp 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 opened on the guide rod (705). The middle part of the guide groove (706) is a straight groove, and both ends are quarter-helical grooves. A transition groove (703) is opened on one side of the positioning block (702). Both sides of the positioning block (702) are provided with through holes communicating with the transition groove (703). Clamping blocks (704) are sleeved on the outside of the guide rod (705) and inside the transition groove (703). A sliding ball (707) is fixedly connected to the clamping block (704). The sliding ball (707) is slidably connected to the guide groove (706).

6. The transformer partial discharge online monitoring device with adjustable bracket according to claim 5, characterized in that: The clamping block (704) has several parallel protrusions (708) symmetrically arranged on both sides. The protrusions (708) are all perpendicular to the guide rod (705) and are semi-cylindrical. The protrusions (708) are made of rubber.

7. The transformer partial discharge online monitoring device with adjustable bracket according to claim 2, characterized in that: Each of the adjusting blocks (302) has an auxiliary wheel (9) rotatably connected to the side of the roller (303). The auxiliary wheel (9) has the same shape as the roller (303) and is installed on the same vertical line.

8. The transformer partial discharge online monitoring device with adjustable bracket according to claim 1, characterized in that: Both the base (1) and the positioning frame (2) are provided with several lightweight grooves (11). The bottom of the positioning frame (2) is symmetrically fixedly connected with two universal wheels (13). The positioning frame (2) is fixedly connected with a telescopic pull rod structure (12).

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