A transformer online monitoring system and method

Abstract

The present invention belongs to the technical field of transformer testing and online monitoring, and in particular, relates to a transformer online monitoring system and method. It expands the coverage of transformer dynamic monitoring and improves monitoring flexibility. It includes a monitoring outer cabinet, and the transformer to be monitored is installed on the top of the monitoring outer cabinet; a flap door is provided on the top of the monitoring outer cabinet and on both sides of the transformer, and a front cover end plate door is provided on the top of the cabinet. A bottom sliding platform and a push-out electric cylinder are arranged in the monitoring outer cabinet; a monitoring unit is hinged on the bottom sliding platform and under each flap door, and the two monitoring units have the same structure, both including an L-shaped support installed on the bottom sliding platform and a monitoring unit frame, and a temperature sensor for monitoring the transformer, a noise monitor, a visual lens and a fire sprinkler for fire extinguishing are installed on the monitoring unit frame. The bottom of the monitoring unit frame is hinged to the L-shaped support through a rotating shaft base, a rotating shaft motor is installed in the rotating shaft base, and the bottom sliding platform includes a sliding bottom plate connected to the pushing electric cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer testing and online monitoring, and in particular relates to a transformer online monitoring system and method. Background Art

[0002] In the operation and maintenance practice of the power industry, the online monitoring system of transformers plays a vital role to ensure the stable operation of the power grid. However, the existing technology has obvious limitations in terms of monitoring range, data dimension, collaborative operation and multi-point posture adjustment, which urgently need to be broken through.

[0003] First, traditional monitoring systems are often limited to static monitoring modes and cannot be flexibly adjusted according to the needs of different areas of the transformer, resulting in limited monitoring range, especially blind spots when covering the two sides and front areas, reducing the flexibility and comprehensiveness of monitoring. Secondly, the single-dimensional monitoring strategy only focuses on a few parameters such as temperature and current, ignoring the collection of multi-dimensional information such as noise and visual data. This not only limits the comprehensive insight into the health status of the transformer, but also lacks an effective early warning mechanism in emergency situations such as fire, increasing safety risks.

[0004] Furthermore, the independently operated monitoring units failed to achieve cross-unit collaborative monitoring. When faced with complex scenarios that require simultaneous data acquisition from multiple angles or positions, the integrity and accuracy of the information are difficult to guarantee, which weakens the overall reliability of the monitoring system. Finally, the fixed viewing angle and single posture monitoring method cannot meet the needs of multi-point and multi-posture precise monitoring of transformers, which limits the richness and reliability of the data and affects the accuracy and efficiency of fault diagnosis.

[0005] In view of this, it is necessary to develop a new transformer online monitoring system that can overcome the above limitations and realize dynamic coverage, multi-dimensional monitoring, collaborative operation, and multi-point and multi-posture monitoring. This will become the key for the power industry to improve the level of equipment operation and maintenance and ensure the safety of the power grid. Summary of the invention

[0006] The present invention aims at solving the defects in the prior art and provides a transformer online monitoring system and method.

[0007] To achieve the above purpose, the present invention adopts the following technical solution.

[0008] The transformer online monitoring system includes a monitoring cabinet, and the transformer to be monitored is installed on the top of the monitoring cabinet; a flap door is provided on the top of the monitoring cabinet and on the left and right sides of the transformer, and a front cover end plate door is provided on the top of the cabinet and on the front side of the transformer. A bottom sliding platform and an electric cylinder are provided on the bottom wall of the monitoring cabinet; the electric cylinder is connected to the bottom sliding platform and is used to drive the bottom sliding platform to slide forward and backward. A monitoring unit is hinged on the bottom sliding platform and under each flap door. The two monitoring units have the same structure, and both include an L-shaped support installed on the bottom sliding platform and a monitoring unit frame installed on the L-shaped support. A temperature sensor for monitoring the transformer, a noise monitor, a visual lens, and a fire sprinkler for fire extinguishing are installed on the monitoring unit frame. The bottom of the monitoring unit frame is hinged to the L-shaped support through a rotating shaft base. A rotating shaft motor is installed in the rotating shaft base to flip the monitoring unit frame from a horizontal state to a suitable monitoring angle (a special angle is a 90° upright state) when monitoring the transformer; and under the action of the push-out electric cylinder, the bottom sliding platform is pushed forward to slide to the horizontal front cover end plate door after opening 90°, so as to expand the monitoring range and complete the monitoring of the left and right sides of the transformer.

[0009] The bottom sliding platform includes a sliding base plate connected to the pushing electric cylinder, and two monitoring units are hinged on the sliding base plate; the sliding base plate is symmetrically provided with two sets of guide rails along the length direction, each set of guide rails is slidably connected with a nut slider seat, each monitoring unit is installed on a nut slider seat, and a wire rod is provided on the sliding base plate corresponding to each set of guide rails; and the position of the monitoring unit is adjusted by driving the corresponding wire rod to rotate through a motor (left motor, right motor); it is used to realize the monitoring of the front end face of the transformer.

[0010] Furthermore, the two monitoring units are: a left monitoring unit and a right monitoring unit; the monitoring unit frames of the left monitoring unit and the right monitoring unit are respectively provided with a first monitoring unit and a second monitoring unit. The first monitoring unit comprises a single-axis module mounted on the monitoring unit frame and a first monitoring housing mounted on the slide plate of the single-axis module, one side of the first monitoring housing is open and provided with a chamber for accommodating the installation of sensors, a steering body rotates in the chamber, and a mounting hole is provided on the steering body for installing a temperature sensor and a noise monitor; a steering motor is provided at the bottom of the first monitoring housing, and the motor shaft of the steering motor is connected to the rotating shaft at the bottom of the steering body, driving the steering body to rotate a certain angle relative to the first monitoring housing, so as to adjust the monitoring angle of the temperature sensor and the noise monitor.

[0011] Furthermore, the second monitoring unit includes an electric cylinder mounting seat mounted on the monitoring unit frame, a linear electric cylinder is mounted on the electric cylinder mounting seat, and the cylinder rod of the linear electric cylinder is arranged upward, a support arm is mounted on the top of the cylinder rod, and the side wall of the support arm is slidably connected to the monitoring unit frame; the linear electric cylinder drives the support arm to rise and fall along the monitoring unit frame. A U-shaped fork is mounted on the top of the support arm, and a flip arm is hinged in the U-shaped fork, and a fire sprinkler and a visual lens are mounted on the flip arm, and then the linear electric cylinder realizes the lifting and lowering of the fire sprinkler and the visual lens.

[0012] Furthermore, the flip arm adopts a rectangular frame, a fire sprinkler is installed on the top of the rectangular frame, a visual lens is installed on the bottom of the rectangular frame, and a visual lens controller for controlling the visual lens and a switch valve for controlling the fire sprinkler are provided; one side of the rectangular frame of the flip arm is hinged to the U-shaped fork, and a vertical flip motor is installed in the U-shaped fork, and the output shaft of the vertical flip motor is consistent with the rotation axis of the rectangular frame, which is used to drive the rectangular frame to rotate a certain angle relative to the U-shaped fork; the pitch angle adjustment of the fire sprinkler and the visual lens is realized.

[0013] Furthermore, the support arm adopts a rectangular frame structure, the bottom of the rectangular frame structure is connected to the cylinder rod end of the linear electric cylinder through a mounting seat, and a horizontal rotating motor located at the top and a fire extinguisher tank located at the bottom are arranged in the rectangular frame structure of the support arm; wherein, the motor seat of the horizontal rotating motor is fixed to the inner top wall of the support arm; the motor shaft of the horizontal rotating motor passes through the through hole in the inner top wall of the support arm and can rotate freely relative to the through hole, and the protruding motor shaft is used to drive the U-shaped fork to rotate; the horizontal rotation angle adjustment of the fire sprinkler and the visual lens is realized.

[0014] Furthermore, the two flap doors are: a left flap door and a right flap door, and the left flap door and the right flap door are both hinged to the top of the monitoring outer cabinet through hinges, and flipped to 90° through a flap driving mechanism; when the left flap door is opened, the left monitoring unit flips from a horizontal state to a 90-degree upright state, exposing the monitoring outer cabinet; when the right flap door is opened, the right monitoring unit can expose the monitoring outer cabinet, and flip from a horizontal state to a 90-degree upright state, exposing the monitoring outer cabinet.

[0015] Furthermore, the front cover end plate door is hinged to the bottom of the monitoring outer cabinet through a hinge, and is flipped to 90° to a horizontal state by the front cover end plate opening and closing drive mechanism.

[0016] Furthermore, the mounting holes provided on the steering body of the first monitoring unit are divided into two rows, each row is provided with two mounting holes, a total of four mounting holes, for mounting four sensors.

[0017] Furthermore, the bottom sliding platform also includes two double-section telescopic guide rails, wherein the outer guide rails of the two double-section telescopic guide rails are fixed to the inner bottom wall of the monitoring outer cabinet, the sliding bottom plate is fixed to the top of the inner guide rail end of the two double-section telescopic guide rails, and the inner guide rails are slidably connected to their respective outer guide rails; the pushing electric cylinder is located between the two double-section telescopic guide rails, and the pushing electric cylinder seat is installed on the inner bottom wall of the monitoring outer cabinet, and the end of the pushing electric cylinder rod is connected to the middle part of the bottom sliding platform. During monitoring, the sliding bottom plate is driven to slide along the outer guide rail until it slides to the outside of the monitoring outer cabinet and onto the open front cover end plate door.

[0018] Compared with the prior art, the present invention has beneficial effects.

[0019] 1. Dynamic coverage: The transformer online monitoring system of the present invention is composed of two left and right monitoring units, each with its own precision drive system, which can automatically rise and fall and move horizontally along the sliding platform at the bottom, so that the transformer monitoring range fully covers the two sides and the front area of ​​the transformer, expanding the dynamic monitoring coverage and improving the monitoring flexibility.

[0020] 2. Multi-dimensional monitoring and early warning: Both the left and right monitoring units are equipped with the first and second monitoring units, which can collect transformer operating parameters in real time, including transformer operating temperature, operating noise data, visual monitoring data and other key indicators, to ensure real-time monitoring of the health status of the transformer. At the same time, when a fire fault is identified, the early warning mechanism is triggered, and the fire detector is activated to extinguish the fire in time, avoiding major accidents and ensuring the stable operation of the power grid.

[0021] 3. Dual-unit collaborative monitoring operation: The left and right monitoring units can be collaboratively controlled. When encountering situations where data needs to be obtained from different angles or positions at the same time (for example, detecting the symmetry of a transformer or comparing the temperature difference on both sides), the two units can work together seamlessly and collect data synchronously to ensure the integrity and accuracy of the information. This collaborative mechanism reduces monitoring blind spots and enhances the reliability of the monitoring system.

[0022] 4. Multi-point and multi-posture monitoring data collection: The first monitoring unit controls the single-axis module to realize the up and down movement of the steering body embedded with the temperature sensor and the noise sensor. At the same time, the steering body can rotate the angle driven by the motor to ensure that all positions on both sides and the front of the transformer are traversed to achieve multi-point accurate monitoring. The support arm of the second monitoring unit is raised and lowered by the linear electric cylinder, and the horizontal rotation motor and the vertical flip motor move in coordination to achieve horizontal rotation, pitch adjustment, etc., so that the flip arm can complete the required posture adjustment according to the monitoring needs, so as to achieve the purpose of multi-posture adjustment of the visual lens. And when an open fire occurs in the visual system, the flip arm is promptly controlled to adjust the fire sprinkler to aim at the open fire for fire extinguishing.

[0023] In summary, the present invention captures data from multiple dimensions and perspectives through collaborative monitoring, which not only increases the richness of data but also improves the reliability of data. Even in complex environments, the accuracy and consistency of monitoring results can be ensured, providing a solid foundation for subsequent data analysis and fault diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0025] Figure 1 It is a three-dimensional visual system for transformer online monitoring. Figure 1 ;

[0026] Figure 2 It is a three-dimensional view of the monitoring unit door opening of the transformer online monitoring system;

[0027] Figure 3 It is a three-dimensional view of the flip-up status of the monitoring unit of the transformer online monitoring system;

[0028] Figure 4 It is a side view of the monitoring unit of a transformer online monitoring system in the flipped-up state;

[0029] Figure 5 It is a three-dimensional view of the upright state of the monitoring unit of the transformer online monitoring system;

[0030] Figure 6 It is a three-dimensional view of the extended state of the bottom sliding platform of the transformer online monitoring system;

[0031] Figure 7 It is a top view of the bottom sliding platform of a transformer online monitoring system in the extended state;

[0032] Figure 8 It is a side view of the bottom sliding platform of a transformer online monitoring system in the extended state;

[0033] Fig. 9 It is a three-dimensional view of the overall structure of the monitoring unit of the transformer online monitoring system;

[0034] Fig.10 It is a top view of the overall structure of the monitoring unit of the transformer online monitoring system;

[0035] Fig.11 It is a three-dimensional visual monitoring unit of the transformer online monitoring system. Figure 1 ;

[0036] Fig.12 It is a three-dimensional visual monitoring unit of the transformer online monitoring system. Figure 2 ;

[0037] Fig.13 It is a side view of the right monitoring unit of a transformer online monitoring system;

[0038] Fig.14 yes Fig.13 Middle AA section view;

[0039] Fig.15 yes Fig.12 A top view of

[0040] Fig.16 yes Fig.15 Middle CC section view;

[0041] Fig.17 It is a three-dimensional visual system for the support arm structure of the transformer online monitoring system. Figure 1 ;

[0042] Fig.18 It is a three-dimensional visual system for the support arm structure of the transformer online monitoring system. Figure 2 ;

[0043] Fig.19 It is a three-dimensional view of the flip arm structure of a transformer online monitoring system;

[0044] Fig. 20 It is a main view of the structure of the flip arm of a transformer online monitoring system;

[0045] Fig.21 It is a side view of the flip arm structure of a transformer online monitoring system;

[0046] Fig. 22 It is a three-dimensional view of the first monitoring unit of the transformer online monitoring system;

[0047] Fig.23 It is a main view of the first monitoring unit of a transformer online monitoring system;

[0048] Fig.24 It is a main view FF section view of the first monitoring unit of the transformer online monitoring system;

[0049] Fig.25 It is a three-dimensional view of the first monitoring shell of a transformer online monitoring system;

[0050] Fig.26 It is a three-dimensional view of the steering volume of the transformer online monitoring system;

[0051] Fig. 27 The invention relates to a transformer online monitoring system and method information system flow chart.

[0052] In the figure, 1 is the transformer, 2 is the monitoring cabinet, 3 is the bottom sliding platform, 4 is the right monitoring unit, 5 is the left monitoring unit, and 6 is the information control system;

[0053] 101 is a base, 102 is a box, 103 is a heat sink, 104 is a low-voltage bushing, and 105 is a high-voltage bushing;

[0054] 201 is the right side plate, 202 is the front cover end plate door, 203 is the front cover end plate opening and closing driving mechanism, 204 is the right flap door, 205 is the right flap driving mechanism, 206 is the left flap door, 207 is the left flap driving mechanism, 208 is the upper plate, 209 is the left side plate, 210 is the bottom plate, 211 is the first pneumatic support rod, and 212 is the connecting rod;

[0055] 301 is a sliding base plate, 302 is an L-shaped support, 303 is a right guide rail sliding unit, 304 is a right motor, 305 is a right synchronous belt pulley set, 306 is a left synchronous belt pulley set, 307 is a left motor, 308 is a left guide rail slider unit, 309 is a double-section telescopic guide rail, 310 is a push-out electric cylinder, 311 is a screw rod 1, and 312 is a screw rod 2;

[0056] 401 is a rotating shaft base, 402 is a rotating shaft motor, 403 is a monitoring unit frame, 404 is a first monitoring unit, and 405 is a second monitoring unit;

[0057] 40501 is the electric cylinder mounting base, 40502 is the linear electric cylinder, 40503 is the guide rail, and 40504 is the slider;

[0058] 40505 is a support arm, 40506 is a U-shaped fork, 40507 is a flip arm, 40508 is a visual lens, 40509 is a fire sprinkler, 40510 is a mounting base, 40511 is a fire extinguisher tank, 40512 is a horizontal rotation motor, 40513 is a window, 40514 is a switch valve, 40515 is a vertical flip motor, 40516 is a partition, and 40517 is a visual lens controller;

[0059] 40401 is a single-axis module, 40402 is a slide plate, 40403 is a steering motor, 40404 is a first monitoring housing, 40405 is a chamber, 40406 is a rotating shaft, 40407 is a steering body, 40408 is a temperature sensor, 40409 is a noise monitor, and 40410 is a mounting hole. DETAILED DESCRIPTION

[0060] In order to better understand the technical solution of the present invention, a specific implementation scheme is provided as follows; and the following scheme is only for illustration.

[0061] like Figure 1-26As shown, the present invention includes a monitoring cabinet 2 installed at the bottom of a transformer 1; a flap door is provided on each side of the cabinet top of the monitoring cabinet 2: a left flap door 206 and a right flap door 204, and a front cover end plate door 202 is provided at the front end of the cabinet. A bottom sliding platform 3 and a push-out electric cylinder 310 are provided in the monitoring cabinet 2, and the push-out electric cylinder 310 is used to push the bottom sliding platform to slide forward to the front cover end plate door 202 opened at 90 degrees. The left monitoring unit 5 and the right monitoring unit 4 are hinged on the bottom sliding platform; and the positions correspond to the two flap doors, and after the left flap door 206 is opened, the left monitoring unit 5 can expose the monitoring cabinet 2 and flip from a horizontal state to a 90-degree upright state; after the right flap door 204 is opened, the right monitoring unit 4 can expose the monitoring cabinet 2 and flip from a horizontal state to a 90-degree upright state.

[0062] The left and right monitoring units have the same structure and mirror image design, both of which include an L-shaped support 302 detachably mounted on the sliding bottom plate 301, a monitoring unit frame 403 whose bottom is hinged on the L-shaped support 302, and the bottom of the monitoring unit frame 403 is hinged to the L-shaped support through a rotating shaft base 401. The design of the flip door and the front cover end plate door 202 enables the monitoring system to be stored in the monitoring outer cabinet 2 when not in use, and the flip door and the front cover end plate door 202 are closed. When in use, they are opened and flipped 90 degrees, and the left and right monitoring units are rotated and upright to complete the subsequent monitoring tasks.

[0063] Embodiment 1: A rotating shaft motor 402 is installed in the rotating shaft base 401. The motor base of the rotating shaft motor 402 is fixedly connected to the inner wall of the rotating shaft base 401. The motor shaft of the rotating shaft motor 402 is output horizontally. The motor shaft passes through the through hole of the rotating shaft base 401 and is connected with the L-shaped support key, and the motor shaft can rotate freely relative to the rotating shaft base 401. The rotating shaft motor 402 moves, driving the rotating shaft base 401 to rotate accordingly, and then the monitoring unit frame 403 on the rotating shaft base 401 rotates accordingly.

[0064] A first monitoring unit 404 is disposed on the monitoring unit frame 403 , and a second monitoring unit 405 is disposed on the monitoring unit frame 403 and on one side of the first monitoring unit 404 . The first monitoring unit 404 includes a vertical single-axis module installed on the monitoring unit frame 403, and a first monitoring shell is installed on the slide plate of the single-axis module. One side of the first monitoring shell 40404 is open and is provided with a chamber 40405 for accommodating the installation of the sensor; a steering body 40407 is provided in the chamber 40405, and the top and bottom of the steering body 40407 are rotatably connected to the inside of the chamber 40405 through a rotating shaft respectively; a steering motor 40403 is provided at the bottom of the first monitoring shell, and the base of the steering motor 40403 is fixed to the bottom of the first monitoring shell, and the motor shaft of the steering motor 40403 is connected to the rotating shaft at the bottom of the steering body 40407 through a coupling, so as to drive the steering body 40407 to rotate a certain angle relative to the first monitoring shell; a mounting hole is opened on the steering body 40407 for installing a temperature sensor 40408 and a noise monitor 40409; preferably, the mounting holes are divided into two columns, and each column is provided with two, for a total of four mounting holes.

[0065] Example 2: A single-axis module includes a vertical linear guide installed on a frame, a slider slidably connected to the linear guide, a slide plate fixed on the slider, a drive motor, and a ball screw; one end of the ball screw is connected to the drive motor, and the other end is connected to the slider through a nut, thereby converting rotational motion into linear motion.

[0066] The second monitoring unit 405 includes an electric cylinder mounting seat mounted on the monitoring unit frame 403, a linear electric cylinder is mounted on the electric cylinder mounting seat, and the cylinder rod of the linear electric cylinder is arranged upward, a support arm 40505 is arranged at the end of the cylinder rod, and the side wall of the support arm 40505 is slidably connected to the monitoring unit frame 403. A U-shaped fork 40506 is installed on the top of the support arm 40505, and the U-shaped fork 40506 is provided with a flip arm 40507, and the flip arm 40507 is hinged in the U-shaped fork 40506.

[0067] Embodiment 3: The flip arm 40507 adopts a rectangular frame, a fire sprinkler 40509 is installed on the top of the rectangular frame, and a visual lens 40508 is installed on the bottom of the rectangular frame; a horizontal partition 40516 is arranged in the middle of the rectangular frame of the flip arm 40507, dividing the rectangular frame into upper and lower spaces; wherein, a visual lens 40508 controller is installed in the lower space for controlling the visual lens 40508; and a vertical flip motor 40515 and a switch valve for controlling the fire sprinkler 40509 are installed in the upper space. Among them, one side of the rectangular frame is hinged to the U-shaped fork 40506; a vertical flip motor 40515 is installed in the U-shaped fork 40506, and the vertical flip motor 40515 drives the rectangular frame to rotate a certain angle relative to the U-shaped fork 40506; specifically, the output shaft of the vertical flip motor 40515 is consistent with the rotation axis of the rectangular frame; the output shaft of the vertical flip motor 40515 extends out from the rectangular frame shaft through hole and is key-connected to the U-shaped fork 40506, and the output shaft of the vertical flip motor 40515 can rotate freely relative to the rectangular frame shaft through hole; the vertical flip motor 40515 is actuated, driving the rectangular frame to rotate a certain angle relative to the U-shaped fork 40506.

[0068] Embodiment 4: The side wall of the support arm 40505 is connected to the slider 40504, and the slider is slidably connected to the guide rail 40503. The guide rail 40503 is vertically arranged and parallel to the cylinder rod; and the guide rail is detachably installed on the monitoring unit frame 403.

[0069] Embodiment 5: The support arm 40505 adopts a rectangular frame structure, and the bottom is connected to the end of the cylinder rod through a mounting seat. The support arm 40505 rectangular frame structure is provided with a horizontal rotary motor 40512 located at the top and a fire extinguisher tank 40511 at the bottom; wherein, the motor seat of the horizontal rotary motor 40512 is fixed to the inner top wall of the support arm 40505; the motor shaft of the horizontal rotary motor 40512 passes through the through hole in the inner top wall of the support arm 40505 and can rotate freely relative to the through hole, and the motor shaft passing through is used to drive the U-shaped fork 40506 to rotate. The end of the motor shaft is directly connected to the bottom of the U-shaped fork 40506, or: a slewing support plate is installed on the top of the support arm 40505, the outer ring of the slewing support plate is fixed to the top of the support arm 40505, the top of the inner ring of the slewing support plate is connected to the U-shaped fork 40506, and the inner ring of the slewing support plate is connected to the output shaft of the motor, and the motor drives it to rotate to a certain angle, thereby causing the U-shaped fork 40506 to rotate a certain angle.

[0070] Embodiment 6, the left flap door 206 and the right flap door 204 are both hinged to the top of the monitoring outer cabinet 2 through hinges, and each flap door is flipped to 90 degrees through a flap driving mechanism; (the left flap door 206 corresponds to the left flap driving mechanism, and the right flap door 204 corresponds to the right flap driving mechanism;) and the flap driving mechanism includes a first pneumatic support rod 211, the rod seat of the first pneumatic support rod 211 is fixed in the cabinet body, and the piston rod end of the first pneumatic support rod 211 is rotatably connected to a hinge seat, the hinge A connecting rod 212 is rotatably connected to the connecting seat, and the connecting rod 212 is connected to the corresponding flap door body; the front cover end panel door 202 is hinged to the bottom of the monitoring outer cabinet 2 by a hinge, and the front cover end panel door 202 is flipped 90 degrees to a horizontal state by the front cover end panel opening and closing drive mechanism 203; the front cover end panel opening and closing drive mechanism 203 includes a second pneumatic support rod, the rod seat of the second pneumatic support rod is fixed in the cabinet body, and the piston rod of the second pneumatic support rod is hinged to the front cover end panel door 202 to drive it to flip.

[0071] Embodiment 7, the bottom sliding platform includes a sliding bottom plate 301301 and two double-section telescopic guide rails 309; two monitoring units are hinged on the sliding bottom plate 301301; wherein, the outer guide rails of the two double-section telescopic guide rails 309 are fixed to the inner bottom wall of the monitoring outer cabinet 2, and the sliding bottom plate 301301 is fixed to the top of the inner guide rail end of the two double-section telescopic guide rails 309, and the inner guide rails are slidably connected to their respective outer guide rails; the pushing electric cylinder is located between the two double-section telescopic guide rails 309, and the pushing electric cylinder cylinder seat is installed on the inner bottom wall of the monitoring outer cabinet 2, and the end of the pushing electric cylinder cylinder rod is connected to the middle part of the bottom sliding platform, driving the sliding bottom plate 301301 to slide along the outer guide rail until it slides to the outside of the monitoring outer cabinet 2 and onto the open front cover end plate door 202.

[0072] Embodiment 8, the sliding base plate 301301 is symmetrically provided with two groups of guide rails along the length direction, each group of guide rails includes two guide rails, each group of guide rails is slidably connected to a nut slider seat, and a monitoring unit is installed on each nut slider seat; specifically, the L-shaped support 302 of the monitoring unit is fixedly connected to the top of the corresponding nut slider seat; a screw rod is provided between the two guide rails of each group of guide rails; the two screw rods include: screw rod one 311 and screw rod two 312; wherein, screw rod one 311 is threadedly connected to the nut slider seat of the left monitoring unit 5, and screw rod two 312 is threadedly connected to the nut slider seat of the right monitoring unit 4. The center lines of the two screw rods are collinear, and one end of each screw rod facing the sliding base plate 301301 is rotatably supported on the sliding base plate 301 through a screw rod seat, and the ends of the two screw rods away from the sliding base plate 301301 are rotatably connected to a concave frame; two motors for driving the screw rods to rotate are arranged on one side of the concave frame and between the two sets of guide rails, namely a left motor 307 and a right motor 304, the left motor 307 drives screw rod one 311 to rotate through a synchronous belt pulley group, and the right motor 304 drives screw rod two 312 to rotate through a synchronous belt pulley group; the two synchronous belt pulley groups have the same structure and both include: a driven wheel sleeved on the outside of the corresponding screw rod, a driving wheel transmission-connected to the driven wheel, and the driving wheel is driven to rotate by the corresponding motor; and the left motor 307 and the right motor 304 are both installed on the motor mounting frame; the two driven wheels are located between the concave frames; this can save space.

[0073] Monitoring process:

[0074] When the transformer 1 is in normal operation, the online detection system will monitor the transformer 1 regularly according to the actual usage.

[0075] First, the monitoring system controls the left and right flap driving mechanisms and the front cover end plate opening and closing driving mechanism 203 to open the respective flap doors to a 90-degree position.

[0076] The left and right monitoring units 4 are driven by the shaft motor 402 to flip counterclockwise, and the flip angle range is between 0°-90°, and can stay at any position within this angle.

[0077] At this time, the push-out electric cylinder 310 is actuated to push out the bottom sliding platform, which is mounted on one end of the double-section telescopic guide rail 309 , which plays a supporting and guiding role.

[0078] When the left and right monitoring units 4 are vertically upward, the left motor 307 and the right motor 304 can drive the corresponding screw rods to achieve the movement of the left monitoring unit 5 and the right monitoring unit 4 in the direction of their respective guide rails.

[0079] At this time, the left and right monitoring units 4 can monitor the areas on both sides and the front of the transformer 1 by cooperatively controlling the shaft motor 402 , the left motor 307 and the right motor 304 .

[0080] Working principle of temperature monitoring and noise monitoring:

[0081] The left monitoring unit 5 and the right monitoring unit 4 have the same structure and are mirror images of each other.

[0082] The left and right monitoring units 4 are provided with the first monitoring unit 404. When the left and right monitoring units 4 are running on both sides and in front of the transformer 1, the first monitoring housing can carry the steering body 40407 to slide along the setting direction of the single-axis module by controlling the single-axis module, so that the temperature sensor 40408 and the noise monitor 40409 carried by the steering body 40407 can reach all positions on both sides and in front of the transformer 1. In this way, the temperature sensor 40408 and the noise monitor 40409 can extract monitoring data at multiple points on both sides and in front of the transformer 1.

[0083] A steering motor 40403 is installed under the steering body 40407, which can turn the position where the temperature sensor 40408 and the noise monitor 40409 are installed to the direction of the chamber 40405 when the monitoring equipment is not working. The chamber 40405 adopts a sealed design, which can play a role in sealing and protecting the temperature sensor 40408 and the noise monitor 40409.

[0084] Visual monitoring and fire fighting:

[0085] When visual monitoring is required, the linear electric cylinder is started, the electric cylinder rod is extended, and the support arm 40505 is pushed out a certain distance along the guide rail, so that the flip arm 40507 is completely exposed from the detection arm housing (to prevent the flip arm 40507 from interfering with the monitoring arm cover during the flipping process).

[0086] By controlling the coordinated movement of the horizontal axis motor 402 and the vertical flip motor 40515, the flip arm 40507 can achieve the required posture. According to the needs of appearance monitoring, the visual lens 40508 is controlled to aim at the part of the transformer 1 that needs to be observed, and photos are taken to collect data. When the visual system detects that an open fire occurs in the transformer 1 box or accessories, high-voltage bushings, and low-voltage bushings, the flip arm 40507 is promptly controlled to adjust the fire sprinkler 40509 to aim at the open fire for fire extinguishing (during the fire extinguishing process, the visual system on the left monitoring unit 5 can be controlled to coordinate and observe the fire extinguishing status in real time).

[0087] like Fig. 27 As shown, the transformer 1 online monitoring method comprises the following steps:

[0088] a) During the normal operation of transformer 1, the information control system automatically starts the monitoring operation according to the preset time interval (usually 30min-60min) to ensure the automation and efficiency of the monitoring process.

[0089] b) The information control system wirelessly transmits the collected information to the remote monitoring platform, and the remote monitoring platform sends instructions to control the flap drive mechanism and the front cover end plate opening and closing drive mechanism 203 through the information control system to accurately open the corresponding flap door and the front cover end plate door 202 to a 90-degree position, providing an unobstructed window for subsequent monitoring.

[0090] c) The shaft motor 402 is used to drive the left and right monitoring units to flip counterclockwise to any position between 0° and 90°. This process is coordinated by the information control system to achieve rapid positioning of the optimal monitoring angle.

[0091] d) The information control system directs the push-out electric cylinder 310 to move, so that the bottom sliding platform moves smoothly to the predetermined position along the double-section telescopic guide rail 309, ensuring that the monitoring unit can approach the target area for detailed inspection.

[0092] e) When the left and right monitoring units are adjusted to be vertically upward (flipped 90 degrees), the left motor 307 and the right motor 304 drive the left and right monitoring units to move along the directions of their respective guide rails. This process is monitored in real time by the remote monitoring platform to ensure that the monitoring units move according to the planned path.

[0093] f) Under the coordinated control of the information control system, the shaft motor 402, the left motor 307 and the right motor 304 work together to enable the left and right monitoring units to perform all-round monitoring on both sides and the front area of ​​the transformer 1 to ensure coverage without blind spots.

[0094] g) The temperature sensor 40408 and the noise monitor 40409 on the left and right monitoring units can slide along the setting direction of the single-axis module by controlling the single-axis module to ensure that they can reach all positions that need to be monitored. At the same time, the data analysis system of the remote monitoring platform analyzes the collected temperature and noise data in real time to provide a basis for fault prediction.

[0095] h) During the non-monitoring period, the steering body 40407 will turn the position where the temperature sensor 40408 and the noise monitor 40409 are installed toward the inside of the chamber 40405, and the chamber 40405 provides sealing protection.

[0096] i) When entering the visual monitoring mode, the information control system starts the linear electric cylinder to push the support arm 40505 to move so that the flip arm 40507 is fully exposed, and then the posture of the flip arm 40507 is precisely adjusted by controlling the coordinated movement of the horizontal rotation motor 40512 and the vertical flip motor 40515 so that the visual lens 40508 can be aligned with the key parts of the transformer 1 to collect high-definition images. Subsequently, the data analysis system analyzes the images to identify potential problems.

[0097] j) If the visual system detects abnormal conditions such as open flames, the information control system immediately controls the flip arm 40507 to adjust the position of the fire sprinkler 40509 for emergency fire extinguishing. At the same time, the visual system is used to continuously monitor the fire extinguishing process to ensure that the fire is effectively controlled. The remote monitoring platform simultaneously alarms and notifies relevant personnel to take further action.

[0098] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. Therefore, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of the present invention.

Claims

1. A transformer online monitoring system, comprising a monitoring outer cabinet (2), wherein the transformer to be monitored is installed on the top of the monitoring outer cabinet (2); characterized in that: A flap door is provided on the top of the monitoring outer cabinet (2) and on both sides of the transformer, and a front cover end plate door (202) is provided on the top of the cabinet and on the front side of the transformer; The inner bottom wall of the monitoring outer cabinet (2) is provided with a bottom sliding platform (3) and an electric cylinder (310); the electric cylinder is connected to the bottom sliding platform (3) and is used to drive the bottom sliding platform (3) to slide forward and backward; a monitoring unit is hinged on the bottom sliding platform (3) and below each flap door, and the two monitoring units have the same structure, both comprising an L-shaped support (302) mounted on the bottom sliding platform (3) and a monitoring unit frame (403) mounted on the L-shaped support; a temperature sensor (40408) for monitoring the transformer, a noise monitor (40409), a visual lens (40508) and a fire sprinkler (40509) for extinguishing fire are mounted on the monitoring unit frame (403); The bottom of the monitoring unit frame is hinged to the L-shaped support through a rotating shaft base (401), and a rotating shaft motor (402) is installed in the rotating shaft base (401). When monitoring the transformer, the rotating shaft motor (402) is used to flip the monitoring unit frame from a horizontal state to a suitable monitoring angle; and under the action of the push-out electric cylinder, the bottom sliding platform (3) is pushed forward to slide to the horizontal front cover end plate door (202) after opening at 90 degrees, so as to expand the monitoring range and complete the monitoring of the left and right sides of the transformer; The bottom sliding platform (3) comprises a sliding bottom plate (301) connected to the driving electric cylinder (310), and two monitoring units are hinged on the sliding bottom plate (301); the sliding bottom plate (301) is symmetrically provided with two groups of guide rails along the length direction, each group of guide rails is slidably connected with a nut slider seat, each monitoring unit is installed on the nut slider seat, and a screw rod is provided on the sliding bottom plate (301) corresponding to each group of guide rails; and the position of the monitoring unit is adjusted by rotating the corresponding screw rod driven by a motor; and the monitoring unit is used to realize the monitoring of the front end face of the transformer; The two monitoring units are: a left monitoring unit (5) and a right monitoring unit (4); a first monitoring unit (404) and a second monitoring unit (405) are respectively arranged on the monitoring unit frames of the left monitoring unit (5) and the right monitoring unit (4); The first monitoring unit comprises a single-axis module (40401) mounted on a monitoring unit frame and a first monitoring housing (40404) mounted on a single-axis module slide plate (40402), one side of the first monitoring housing (40404) being open and provided with a chamber (40405) for accommodating sensor installation, a steering body (40407) being rotatably arranged in the chamber (40405), and a mounting hole being provided on the steering body (40407) for mounting a temperature sensor (40408) and a noise monitor (40409); a steering motor (40403) being arranged at the bottom of the first monitoring housing (40404), a motor shaft of the steering motor (40403) being connected to a rotating shaft at the bottom of the steering body (40407), driving the steering body (40407) to rotate a certain angle relative to the first monitoring housing (40404), thereby realizing the monitoring angle adjustment of the temperature sensor (40408) and the noise monitor (40409); The second monitoring unit comprises an electric cylinder mounting seat (40501) mounted on the monitoring unit frame (403), a linear electric cylinder (40502) being mounted on the electric cylinder mounting seat (40501), a cylinder rod of the linear electric cylinder (40502) being arranged upward, a support arm (40505) being mounted on the top of the cylinder rod, and a side wall of the support arm (40505) being slidably connected to the monitoring unit frame (403); the linear electric cylinder (40502) drives the support arm to move up and down along the monitoring unit frame (403); A U-shaped fork (40506) is installed on the top of the support arm (40505), a flip arm (40507) is hinged inside the U-shaped fork (40506), and a fire sprinkler (40509) and a visual lens (40508) are installed on the flip arm (40507); and then the linear electric cylinder (40502) realizes the lifting and lowering of the fire sprinkler (40509) and the visual lens (40508); The flip arm (40507) adopts a rectangular frame, a fire sprinkler (40509) is installed on the top of the rectangular frame, a visual lens (40508) is installed on the bottom of the rectangular frame, and a visual lens controller (40517) for controlling the visual lens and a switch valve (40514) for controlling the fire sprinkler (40509) are provided; One side of the rectangular frame of the flip arm (40507) is hinged to the U-shaped fork (40506), and a vertical flip motor (40515) is installed in the U-shaped fork (40506). The output shaft of the vertical flip motor (40515) is consistent with the rotation axis of the rectangular frame, and is used to drive the rectangular frame to rotate a certain angle relative to the U-shaped fork (40506); to achieve the pitch angle adjustment of the fire sprinkler (40509) and the visual lens (40508); The bottom sliding platform (3) further comprises two double-section telescopic guide rails (309), wherein the outer guide rails of the two double-section telescopic guide rails (309) are fixed to the inner bottom wall of the monitoring outer cabinet (2), the sliding bottom plate (301) is fixed to the top of the inner guide rail ends of the two double-section telescopic guide rails (309), and the inner guide rails are slidably connected to the respective outer guide rails; the pushing electric cylinder (310) is located between the two double-section telescopic guide rails (309), and the cylinder seat of the pushing electric cylinder (310) is installed on the inner bottom wall of the monitoring outer cabinet (2), and the cylinder rod end of the pushing electric cylinder (310) is connected to the middle of the bottom sliding platform (3), and when monitoring is in operation, the sliding bottom plate (301) is driven to slide along the outer guide rail until it slides to the open front cover end plate door (202) outside the monitoring outer cabinet (2).

2. The transformer online monitoring system according to claim 1, characterized in that: The support arm (40505) adopts a rectangular frame structure, the bottom of which is connected to the cylinder rod end of the linear electric cylinder (40502) through a mounting seat, and a horizontal rotating motor (40512) located at the top and a fire extinguisher tank (40511) located at the bottom are arranged in the rectangular frame structure of the support arm (40505); wherein the motor seat of the horizontal rotating motor (40512) is fixed to the inner top wall of the support arm (40505); the motor shaft of the horizontal rotating motor (40512) passes through the through hole of the inner top wall of the support arm (40505) and can rotate freely relative to the through hole, and the motor shaft passing through is used to drive the U-shaped fork (40506) to rotate, so as to realize the horizontal rotation angle adjustment of the fire sprinkler (40509) and the visual lens (40508).

3. The transformer online monitoring system according to claim 1, characterized in that: The two flap doors are: a left flap door (206) and a right flap door (204); the left flap door (206) and the right flap door (204) are both hinged to the top of the monitoring outer cabinet (2) through hinges, and can be flipped to 90 degrees through a flap driving mechanism.

4. The transformer online monitoring system according to claim 1, characterized in that: The front cover end plate door (202) is hinged to the bottom of the monitoring outer cabinet (2) via a hinge, and is flipped to 90° to a horizontal state by the front cover end plate opening and closing driving mechanism (203).

5. The transformer online monitoring system according to claim 1, characterized in that: The mounting holes provided on the steering body (40407) of the first monitoring unit (404) are divided into two rows, with two holes in each row, for a total of four mounting holes, for mounting four sensors.

6. A transformer online monitoring method, characterized in that: The monitoring method is a monitoring method based on the transformer online monitoring system according to any one of claims 1 to 5; It includes the following steps: a) During normal operation of the transformer, the monitoring system automatically starts monitoring operations according to the preset time interval; b) controlling the flap driving mechanism and the front cover end plate opening and closing driving mechanism (203) to open the corresponding flap door and the front cover end plate door (202) to a 90 degree position; c) The left and right monitoring units are driven to flip counterclockwise to any position between 0° and 90° by the rotating shaft motor (402); at this time, the electric cylinder (310) is pushed out to move the sliding bottom plate (301) along the double-section telescopic guide rail (309); and the monitoring of both sides of the transformer is completed; d) When the left and right monitoring units are vertically upward, the left motor (307) and the right motor (304) are cooperatively controlled to drive the left and right monitoring units to move along the directions of their respective guide rails through the left motor (307) and the right motor (304), thereby completing the monitoring of the area in front of the transformer; e) During the monitoring process, the temperature sensor (40408) and the noise monitor (40409) carried by the left and right monitoring units can accurately cover the transformer monitoring through the rotation of the steering body (40407), and at the same time, the sensor can be lifted and slid by controlling the single-axis module (40401) to reach all monitoring positions; f) when the monitoring system is not working, the steering body (40407) turns the position where the temperature sensor (40408) and the noise monitor (40409) are installed toward the inner wall of the first monitoring housing (40404), and the chamber (40405) of the first monitoring housing (40404) provides protection; g) During visual monitoring, the linear electric cylinder (40502) is activated to push the support arm (40505) to move so that the flip arm (40507) is fully exposed, and the posture of the flip arm (40507) is adjusted by controlling the coordinated movement of the horizontal rotation motor (40512) and the vertical flip motor (40515) so that the visual lens (40508) is aligned with the transformer part for collection; h) When the visual lens (40508) detects an open flame, the flip arm (40507) is controlled to adjust the position of the fire sprinkler (40509) to extinguish the fire, and the visual lens (40508) is used to monitor the fire extinguishing process.

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