Transformer oil level monitoring and live defect elimination device

Abstract

The utility model provides a transformer oil level monitoring and live defect elimination device, include: oil level meter body, the oil float of oil level meter body below is equipped with, the multiple color mark observation windows of oil level meter body top is equipped with, the color mark sensor of being fixed in oil level meter body through quick installation support and being located in any color mark observation window outside, the open ring nozzle of being fixed in oil level meter body outside through the annular hoop support welding is connected with open ring nozzle through pressure gas pipe's gas pump, with the gas pump air inlet connection's micro drying box, through communication line and color mark sensor, gas pump electric connection's control box, through above -mentioned scheme, the color change of identification oil level mark, control box carries out data processing in real time, carries out oil level abnormal monitoring, and remote transmission alarm information to operation and maintenance platform, at the same time, carry out timing cleaning color mark observation window, reduce sensor identification signal error, greatly shorten the fault response time, realized the all -weather monitoring of transformer oil level.

Description

Technical Field

[0001] This utility model relates to the field of transformer oil level gauge technology, specifically to a transformer oil level monitoring and live fault elimination device. Background Technology

[0002] In power systems, transformers are extremely critical equipment, and their stable operation directly affects the reliability and security of the power grid. Transformer oil plays a crucial role in insulation and cooling during transformer operation. The sufficiency and level of oil in the transformer tank greatly influence the safe and stable operation of the transformer. If the oil level is too low, it will lead to a decrease in insulation performance, trigger malfunctions of gas protection systems, and even cause the release valve to activate, threatening the safety of the power system.

[0003] During long-term operation, transformer gaskets are prone to aging and oil leakage due to environmental factors, leading to a drop in the insulating oil level and equipment failure. Traditional transformer oil level monitoring and troubleshooting rely almost entirely on manual inspections, which require power outages. This is not only labor-intensive and inefficient, but also lacks real-time monitoring and process records of transformer oil level status, making it prone to missed or false detections.

[0004] When an abnormal oil level occurs in a transformer and needs to be addressed, the traditional approach often requires power outages for inspection and troubleshooting. However, handling abnormal oil levels while the transformer is energized presents challenges such as high safety risks and significant technical difficulties, and currently, there is a lack of effective live troubleshooting technologies and devices. Summary of the Invention

[0005] The transformer oil level monitoring and live fault elimination device provided by this utility model solves the problem that the existing technology cannot detect abnormal transformer oil levels in a timely manner.

[0006] To address the aforementioned problems, this utility model provides a transformer oil level monitoring and live fault elimination device, comprising: an oil level gauge body, an oil float located below the oil level gauge body, multiple color mark observation windows located above the oil level gauge body, a color mark sensor fixed to the oil level gauge body via a quick-install bracket and located outside any color mark observation window, an open annular nozzle located below the quick-install bracket and welded to the outside of the oil level gauge body via a ring clamp bracket, an air pump connected to the open annular nozzle via a pressure-resistant air pipe, a miniature drying box connected to the air pump inlet, and a control box electrically connected to the color mark sensor and the air pump via a communication line.

[0007] With the above solution, the color mark sensor is fixed to the outside of the observation window using a quick-install bracket. It can identify changes in the color of the oil level indicator. The control box processes the data in real time to monitor oil level anomalies and remotely transmits alarm information to the operation and maintenance platform. At the same time, the open ring nozzle, together with the air pump, cleans the color mark observation window at regular intervals, reducing the error of the sensor's recognition signal and significantly shortening the fault response time, thus realizing all-weather monitoring of the transformer oil level.

[0008] According to one embodiment of this utility model, the annular pipe of the above-mentioned open annular nozzle is provided with three nozzles. The nozzles form an inclination angle of 30° to 45° with the color mark observation window. The open annular nozzle is connected to the pressure-resistant air pipe nut through a bend joint. With the above solution, each color mark observation window is equipped with a nozzle, ensuring that the entire surface of the color mark observation window can be effectively cleaned, improving cleaning efficiency. The inclination angle allows the airflow to scour the surface of the color mark observation window at an appropriate angle, forming a certain tangential force, which is beneficial for peeling off stubborn stains, improving the cleaning effect, and ensuring that the airflow can effectively cover and remove dirt.

[0009] According to one embodiment of the present invention, the above-mentioned open annular nozzle and bend joint are both made of stainless steel. Through the above solution, stainless steel has corrosion resistance and can effectively resist the erosion of water, oil, humidity in the air and other possible chemical substances. This is crucial for components that are exposed to the outdoor environment for a long time or may come into contact with media such as transformer oil, ensuring that the nozzle and joint will not be damaged or blocked due to rust, thereby ensuring its long-term stable and reliable operation.

[0010] According to one embodiment of this utility model, the control box is electrically connected to a solar panel. Through the above scheme, a high-efficiency monocrystalline silicon solar panel is used, which can meet the all-weather operation requirements of the device under an average of 4 hours of sunlight per day, adapt to extreme climates from -30℃ to 60℃, solve the problem of no mains power supply in remote substations, and ensure the continuous and stable operation of the oil level monitoring and communication module.

[0011] According to one embodiment of the present invention, the control box includes a PLC control board, a wireless transmission module, a battery, and a solar controller. The above solution significantly improves the reliability of the device. The PLC control board processes the color mark sensor data in real time and, combined with the oil level change model, can realize dynamic monitoring of the oil level.

[0012] According to one embodiment of this utility model, a threaded hole for installing an exhaust valve is provided on the upper part of the oil level gauge body, and the exhaust valve is located above the color mark sensor. A threaded hole for installing an oil replenishing valve is provided in the middle part of the oil level gauge body, and the oil replenishing valve is located below the color mark sensor. Through the above scheme, the exhaust valve and the oil replenishing valve are respectively set on the upper and middle parts of the oil level gauge body, forming a reasonable spatial layout with the color mark sensor. This realizes the organic integration of oil level monitoring, exhaust and oil replenishing functions, making the entire transformer oil level monitoring and live fault elimination device more compact in structure and more functional, and facilitating the maintenance and management of the equipment.

[0013] According to one embodiment of this utility model, the aforementioned quick-installation bracket includes at least: a U-shaped clamp connected to an arc-shaped baffle by bolts, the arc-shaped strip of the arc-shaped baffle being tightly attached to the outer wall of the oil level gauge body, and the semi-circular part of the arc-shaped baffle being fixedly connected to a color mark sensor. Through the above solution, the U-shaped clamp is connected to the arc-shaped baffle by bolts, making the installation process simple and quick. During installation, it is only necessary to place the U-shaped clamp on the appropriate position on the oil level gauge body and fasten the arc-shaped baffle and the U-shaped clamp by bolts to quickly complete the initial positioning and fixation of the quick-installation bracket on the oil level gauge body, greatly shortening the installation time and improving the installation efficiency.

[0014] According to one embodiment of the present invention, the quick-install bracket includes at least: a quick-clamp mounting bracket with an end face, on which the color mark sensor is fixedly mounted. Through the above solution, the quick-clamp mounting bracket makes the installation process of the color mark sensor extremely simple. Through its snap-fit ​​structure, the operator only needs to align the quick-clamp mounting bracket with the corresponding position of the oil level gauge body and gently press or push to complete the installation, which greatly shortens the installation time and improves work efficiency.

[0015] According to one embodiment of the present invention, the oil level gauge body further includes a quick-change oil replenishment connector located above the color mark observation window. Through the above solution, the quick-change oil replenishment connector makes the oil replenishment process simpler and faster. When oil replenishment is required, the operator does not need to use complicated tools or perform cumbersome connection operations. He / she only needs to unscrew the top cover of the oil level gauge body, quickly connect the quick-change oil replenishment connector, and quickly connect the oil replenishment equipment to the quick-change oil replenishment connector to start the oil replenishment operation quickly. This greatly shortens the oil replenishment time and does not damage the internal structure of the original oil level gauge body, thus improving work efficiency. It is especially suitable for emergency oil replenishment situations.

[0016] According to one embodiment of this utility model, the quick-change oil replenishment connector is provided with an exhaust valve, and an oil replenishment valve is provided below the exhaust valve. Sealing rings are provided at the upper and lower interfaces of the quick-change oil replenishment connector. The lower outer wall of the quick-change oil replenishment connector 10 is provided with an external thread that mates with the inner wall of the oil level gauge body 1, and the upper inner wall of the quick-change oil replenishment connector 10 is provided with an internal thread that mates with the upper cover of the oil level gauge body 1. Through the above scheme, the combined use of the exhaust valve and the oil replenishment valve allows the operator to better control the oil replenishment process. In the initial stage of oil replenishment, the exhaust valve is used to observe the gas discharge situation to ensure that the gas inside the transformer is completely discharged. During oil replenishment, the oil replenishment speed and amount are precisely controlled by the oil replenishment valve according to the oil level changes and actual needs, preventing the oil level from being too high or too low, thus ensuring the accuracy of oil replenishment.

[0017] The technical advantages of this application are as follows: The transformer oil level monitoring and live fault elimination device provided in this application uses a color mark sensor fixed to the outside of the observation window with a quick-install bracket. It can identify changes in the color of the oil level mark. The control box processes the data in real time, can provide early warning of abnormal oil levels, and remotely transmit alarm information to the operation and maintenance platform. At the same time, the open ring nozzle, together with the air pump, cleans the color mark observation window at regular intervals, reducing the error of the sensor recognition signal, significantly shortening the fault response time, and realizing all-weather monitoring of the transformer oil level. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the transformer oil level monitoring and live fault elimination device provided by this utility model.

[0019] Figure 2 This is a rear view structural diagram of the transformer oil level monitoring and live fault elimination device provided by this utility model.

[0020] Figure 3 This is a schematic diagram showing some structural details of the transformer oil level monitoring and live fault elimination device provided by this utility model.

[0021] Figure 4 This utility model provides Figure 3 A magnified view showing the details at point A in the middle.

[0022] Figure 5 This utility model provides Figure 3 A detailed enlarged schematic diagram of another embodiment at point A.

[0023] Figure 6 This is a right-view exploded view of the transformer oil level monitoring and live fault elimination device provided by this utility model.

[0024] Explanation of reference numerals in the attached figures: 1. Oil level gauge body; 2. Color mark sensor; 3. Communication cable; 4. Solar panel; 5. Control box; 6. Oil float; 7. Oil replenishing valve; 8. Exhaust valve; 9. Quick-mount bracket; 91. Arc baffle; 92. U-shaped clamp; 93. Quick-release bracket; 94. End face; 10. Quick-change oil replenishing connector; 11. Color mark observation window; 12. Opening annular nozzle; 1201. Nozzle; 1202. Annular clamp bracket; 1203. Bend connector; 1204. I-shaped bracket; 13. Pressure-resistant air pipe; 14. Air pump; 15. Miniature drying oven; 16. Sealing ring. Detailed Implementation

[0025] The following will be combined with the appendix Figures 1-6 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples and should not be used to limit the scope of protection of this application.

[0026] Example 1 Reference Figures 1-5 This utility model provides a transformer oil level monitoring and live fault elimination device, including: an oil level gauge body 1, an oil float 6 located below the oil level gauge body 1, multiple color mark observation windows 11 located above the oil level gauge body 1, a color mark sensor 2 fixed to the oil level gauge body 1 by a quick-install bracket 9 and located outside any color mark observation window 11, an open annular nozzle 12 located below the quick-install bracket 9 and welded to the outside of the oil level gauge body 1 by an annular clamp bracket 1202, an air pump 14 connected to the open annular nozzle 12 through a pressure-resistant air pipe 13, a miniature drying box 15 connected to the air inlet of the air pump 14, and a control box 5 electrically connected to the color mark sensor 2 and the air pump 14 through a communication line 3.

[0027] Through the above scheme, the color mark sensor 2 is fixed to the outside of the observation window using a quick-install bracket 9, which can identify changes in the color of the oil level mark. The control box 5 performs real-time data processing to monitor oil level anomalies and remotely transmits alarm information to the operation and maintenance platform. At the same time, the open ring nozzle 12, together with the air pump 14, cleans the color mark observation window 11 at regular intervals, reducing the error of the sensor identification signal, greatly shortening the fault response time, and realizing all-weather monitoring of the transformer oil level.

[0028] Color mark sensor 2 ensures clear capture of color changes in the multi-functional tubular oil level gauge, thereby determining whether the oil level is normal. Transformers typically use multi-functional tubular oil level gauges, which display blue when the oil level is normal. When the oil level drops to a certain level, the gauge changes color from blue to red. This intuitive color change provides color mark sensor 2 with clear visual characteristics to identify changes in the oil level indicator's position. Color mark sensor 2 captures the color changes of the oil level gauge in real time through a high-precision optical detection module, ensuring clear identification of color features. The RGB color data collected by the sensor is processed by control box 5 and combined with a preset color threshold segmentation model for judgment. For example, if the red component accounts for more than 70% and persists for a certain period of time, the system determines that the oil level is abnormal.

[0029] To improve the accuracy of early warnings, the system employs a dynamic trend analysis model to record time-series data on oil level changes and, combined with historical trends, predicts the rate of oil level decline, providing early warnings of potential risks. Simultaneously, dual-point differential pressure measurement technology assists in verifying oil level data, reducing false alarms. Control box 5 uploads real-time monitoring data and early warning information to a remote monitoring center via a 4G wireless transmission module, allowing maintenance personnel to respond promptly and perform oil replenishment operations.

[0030] Air pump 14 is an oil-free, silent miniature pump with a pump body made of corrosion-resistant engineering plastic. The pump pressure is determined based on the cleaning effect requirements and the pressure resistance of the color mark observation window material. A gas pressure gauge is installed at the air outlet of air pump 14 to monitor the gas pressure in real time, ensuring the cleaning effect and preventing overpressure. This pressure gauge is electrically connected to the control box 5. A pressure relief valve (not shown in the figure) is also installed at the air outlet of air pump 14. When the detected pressure exceeds the set threshold, the pump speed is first reduced by PLC control; if the pressure continues to rise, the pressure relief valve is opened and the pump power is cut off to protect the air pump and pipeline from overpressure damage.

[0031] The miniature drying chamber 15 adopts either a heatless adsorption drying chamber or a membrane dryer to adsorb moisture in the air and lower the air dew point to below -40°C. The pre-dried air is output to the air inlet of the air pump 14 through the air outlet flange. A solenoid valve (not shown in the figure) is installed in front of the air inlet of the open annular nozzle 12. Its opening and closing are controlled by the PLC in the control box 5 to realize the automation of cleaning.

[0032] The cleaning process is automated, executed sequentially by a PLC according to a preset program. First, the micro pump is started to its base speed. Once the pressure stabilizes, the solenoid valve opens, and the air is evenly purged through the ring nozzle. During cleaning, the PLC dynamically adjusts the pump speed based on pressure feedback to maintain optimal cleaning pressure. The system is equipped with a dry-run protection function, immediately stopping and alarming upon detecting abnormal flow. To extend pump life, a precision filter is installed at the air inlet 15 of the micro drying chamber, and a monthly automatic backflushing maintenance program is configured.

[0033] The aforementioned open annular nozzle 12 has three nozzles 1201 on its annular pipe. The nozzles 1201 form an inclination angle of 30° to 45° with the color mark observation window 11. The open annular nozzle 12 is connected to the pressure-resistant air pipe 13 nut through a bend joint 1203. With the above scheme, each color mark observation window 11 is equipped with a nozzle 1201, ensuring that the entire surface of the color mark observation window 11 can be effectively cleaned, thus improving cleaning efficiency. The inclination angle allows the airflow to scour the surface of the color mark observation window 11 at an appropriate angle, forming a certain tangential force, which is beneficial for removing stubborn stains and improving the cleaning effect, ensuring that the airflow can effectively cover and remove dirt.

[0034] The aforementioned open annular nozzle 12 and bend joint 1203 are both made of stainless steel. Through the above solution, stainless steel has corrosion resistance and can effectively resist the erosion of water, oil, humidity in the air and other possible chemical substances. This is crucial for components that are exposed to the outdoor environment for a long time or may come into contact with media such as transformer oil. It ensures that the nozzle and joint will not be damaged or blocked due to rust, thereby ensuring their long-term stable and reliable operation.

[0035] The control box 5 is electrically connected to a solar panel 4. Through the above scheme, the high-efficiency monocrystalline silicon solar panel 4 can meet the all-weather operation requirements of the device under an average of 4 hours of sunlight per day, adapt to extreme climates from -30℃ to 60℃, solve the problem of no mains power supply in remote substations, and ensure the continuous and stable operation of the oil level monitoring and communication module.

[0036] The control box 5 includes a PLC control board, a wireless transmission module, a battery, and a solar controller. This solution significantly improves the reliability of the device. The PLC control board processes the data from the color mark sensor 2 in real time and, combined with the oil level change model, enables dynamic monitoring of the oil level.

[0037] The oil level gauge body 1 has a threaded hole for installing the vent valve 8 on its upper part. The vent valve 8 is located above the color mark sensor 2. The oil level gauge body 1 has a threaded hole for installing the oil replenishing valve 7 in its middle part. The oil replenishing valve 7 is located below the color mark sensor 2. Through the above scheme, the vent valve 8 and the oil replenishing valve 7 are respectively set above and in the middle of the oil level gauge body 1, forming a reasonable spatial layout with the color mark sensor 2. This realizes the organic integration of oil level monitoring, venting and oil replenishing functions, making the entire transformer oil level monitoring and live fault elimination device more compact in structure and more functional, and facilitating the maintenance and management of the equipment.

[0038] The aforementioned quick-install bracket 9 is a U-shaped clamp 92 that is bolted to the arc-shaped baffle 91. The arc-shaped strip of the arc-shaped baffle 91 is tightly attached to the outer wall of the oil level gauge body 1, and the semi-circular part of the arc-shaped baffle 91 is fixedly connected to the color mark sensor 2. Through the above scheme, the U-shaped clamp 92 is bolted to the arc-shaped baffle 91, making the installation process simple and quick. During installation, simply place the U-shaped clamp 92 on the appropriate position on the oil level gauge body 1, and tighten the arc-shaped baffle 91 and the U-shaped clamp 92 with bolts to quickly complete the initial positioning and fixing of the quick-install bracket 9 on the oil level gauge body 1, greatly shortening the installation time and improving the installation efficiency.

[0039] Working principle: Device Installation: Replace the original multi-functional tubular oil level gauge on the transformer with the equivalent device, ensuring a secure and well-sealed installation to prevent oil leakage. Connect the color mark sensor 2 to the control box 5 using communication cable 3. The control box 5 is typically installed on the top of the transformer substation or on a double-pole substation pole, facilitating energy conversion by the solar panel 4 and receiving wireless communication signals from the control box 5. After initial installation, use an oil pump connected to an insulated oil injection rod to automatically replenish oil via a one-way oil replenishment valve 7. The oil replenishment process requires real-time monitoring by operators. After replenishment is complete, monitor the equipment through the backend system to confirm normal operation.

[0040] Monitoring Process: After the device is powered on, color mark sensor 2 collects data in real time and transmits the data to the PLC module in control box 5. The PLC module processes and analyzes the data. If the oil level display is normal, real-time monitoring continues; if the oil level display is abnormal, an alarm signal is immediately sent to the back-end monitoring center via the communication module. Back-end personnel can determine the location of the transformer equipment that needs oil replenishment based on the alarm information.

[0041] Live-line troubleshooting process: When an abnormal oil level alarm signal is received and it is determined that live troubleshooting is necessary, maintenance personnel will use an oil pump connected to an insulated oil injection rod to automatically replenish oil through the one-way oil replenishment valve 7, based on the actual situation. The oil replenishment process requires real-time monitoring by the operator. After troubleshooting is completed, the oil level is monitored again, and the troubleshooting is considered complete when the oil level color mark is confirmed to have returned to the normal range.

[0042] Cleaning Process: The PLC module automatically starts the cleaning program according to a preset cycle. Air pump 14 draws air from the outlet of the miniature drying chamber 15 and delivers it to the open annular nozzle 12 via the pressure-resistant air pipe 13. The three fan-shaped nozzles 1201 of the nozzle spray a fan-shaped air curtain at an angle of 30°–45°, covering the entire observation window surface and removing oil and dust. The stainless steel material ensures corrosion resistance and extends service life. The pressure gauge at the outlet of air pump 14 monitors the pressure in real time, and the PLC module adjusts the air pump power based on the data or prevents overpressure damage to the pipeline via a pressure relief valve. The solenoid valve is controlled by the PLC to automatically open or close the air source.

[0043] Example 2 See attached document Figure 5 According to the above embodiment one, this utility model also provides another embodiment of the transformer oil level monitoring and live fault elimination device. The above-mentioned open annular nozzle 12 is welded and fixed to the bottom of the U-shaped clamp 9 by several I-shaped brackets 1204. The upper part of the I-shaped bracket 1204 adopts an arc suitable for the U-shaped clamp. The I-shaped bracket 1204 is directly connected to the U-shaped clamp 9. The vibration generated by its airflow sweeping does not affect the normal operation and maintenance of the oil level gauge. Furthermore, a thin layer of oil-resistant and aging-resistant rubber or polyurethane gasket is added between the U-shaped clamp 9 and the oil level gauge contact surface to further absorb vibration.

[0044] Example 3 See attached document Figure 6 According to the above embodiment 1, this utility model also provides another embodiment of the transformer oil level monitoring and live fault elimination device. The quick-install bracket 9 is a quick-clamp mounting bracket 93 with an end face 94. The color mark sensor 2 is fixed on the end face 94. Through the above scheme, the quick-clamp mounting bracket 93 makes the installation process of the color mark sensor 2 extremely simple. Through its snap-fit ​​structure, the operator only needs to align the quick-clamp mounting bracket 93 with the corresponding position of the oil level gauge body 1 and gently press or push to complete the installation, which greatly shortens the installation time and improves work efficiency.

[0045] The oil level gauge body 1 also includes a quick-change oil replenishment connector 10 located above the color mark observation window 11. Through the above solution, the quick-change oil replenishment connector 10 makes the oil replenishment process simpler and faster. When oil replenishment is needed, the operator does not need to use complicated tools or perform cumbersome connection operations. He only needs to unscrew the top cover of the oil level gauge body 1, quickly connect the quick-change oil replenishment connector 10, and quickly connect the oil replenishment equipment to the quick-change oil replenishment connector 10 to start the oil replenishment operation quickly. This greatly shortens the oil replenishment time and does not damage the internal structure of the original oil level gauge body 1, thus improving work efficiency. It is especially suitable for emergency oil replenishment situations.

[0046] The aforementioned quick-change oil replenishment connector 10 is equipped with an exhaust valve 8, and an oil replenishment valve 7 is located below the exhaust valve 8. Sealing rings 16 are provided at the upper and lower interfaces of the quick-change oil replenishment connector 10. The lower outer wall of the quick-change oil replenishment connector 10 has an external thread that mates with the inner wall of the oil level gauge body 1, and the upper inner wall of the quick-change oil replenishment connector 10 has an internal thread that mates with the upper cover of the oil level gauge body 1. Through this scheme, the combined use of the exhaust valve 8 and the oil replenishment valve 7 allows operators to better control the oil replenishment process. In the initial stage of oil replenishment, the exhaust valve 8 is used to observe the gas discharge situation to ensure that all gas inside the transformer is exhausted. During oil replenishment, the oil replenishment speed and amount are precisely controlled by the oil replenishment valve 7 according to changes in the oil level and actual needs, preventing the oil level from being too high or too low, thus ensuring the accuracy and effectiveness of oil replenishment.

[0047] The color mark sensor 2 has a 4G antenna interface on its side wall, which transmits data to the controller wirelessly. It is crucial to ensure a secure and reliable connection between the 4G antenna interface and the side wall of the color mark sensor 2 to prevent loosening due to vibration, external force, or other factors during use, which could affect wireless signal transmission. When installing the antenna, follow the correct interface connection method to prevent damage caused by incorrect insertion.

[0048] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transformer oil level monitoring and live-line fault elimination device, characterized in that, include: The oil level gauge body (1), the oil float (6) located below the oil level gauge body (1), the multiple color mark observation windows (11) located above the oil level gauge body (1), the color mark sensor (2) fixed to the oil level gauge body (1) by a quick-mount bracket (9) and located outside any of the color mark observation windows (11), the open annular nozzle (12) located below the quick-mount bracket (9) and welded to the outside of the oil level gauge body (1) by an annular clamp bracket (1202), the air pump (14) connected to the open annular nozzle (12) through a pressure-resistant air pipe (13), the miniature drying box (15) connected to the air inlet of the air pump (14), and the control box (5) electrically connected to the color mark sensor (2) and the air pump (14) through a communication line (3).

2. The transformer oil level monitoring and live fault elimination device according to claim 1, characterized in that, The annular nozzle (12) has three nozzles (1201) on its annular pipe. The nozzles (1201) form an inclination angle of 30° to 45° with the color mark observation window (11). The annular nozzle (12) is connected to the pressure-resistant air pipe (13) nut through a bend joint (1203).

3. The transformer oil level monitoring and live fault elimination device according to claim 2, characterized in that, Both the open annular nozzle (12) and the bend joint (1203) are made of stainless steel.

4. The transformer oil level monitoring and live-line fault elimination device according to claim 1, characterized in that, The control box (5) is electrically connected to a solar panel (4).

5. The transformer oil level monitoring and live-line fault elimination device according to claim 4, characterized in that, The control box (5) includes a PLC control board, a wireless transmission module, a battery, and a solar controller.

6. The transformer oil level monitoring and live fault elimination device according to claim 1, characterized in that, The oil level gauge body (1) has a threaded hole for installing an exhaust valve (8) on its upper part. The exhaust valve (8) is located above the color mark sensor (2). The oil level gauge body (1) has a threaded hole for installing a replenishing valve (7) in its middle part. The replenishing valve (7) is located below the color mark sensor (2).

7. The transformer oil level monitoring and live-line fault elimination device according to claim 1, characterized in that, The quick-install bracket (9) includes at least: a U-shaped clamp (92) that is bolted to the arc-shaped baffle (91), the arc strip of the arc-shaped baffle (91) is close to the outer wall of the oil level gauge body (1), and the semicircular part of the arc-shaped baffle (91) is fixedly connected to the color mark sensor (2).

8. The transformer oil level monitoring and live-line fault elimination device according to claim 1, characterized in that, The quick-install bracket (9) includes at least: a quick-install bracket (93) with an end face (94), and the color mark sensor (2) is fixedly installed on the end face (94).

9. The transformer oil level monitoring and live-line fault elimination device according to claim 8, characterized in that, The oil level gauge body (1) also includes a quick-change oil replenishment connector (10) located above the color mark observation window (11).

10. The transformer oil level monitoring and live fault elimination device according to claim 9, characterized in that, The quick-change oil replenishment connector (10) is provided with an exhaust valve (8), and an oil replenishment valve (7) is provided below the exhaust valve (8). A sealing ring (16) is provided at the upper and lower interfaces of the quick-change oil replenishment connector (10). The lower outer wall of the quick-change oil replenishment connector (10) is provided with an external thread that mates with the inner wall of the oil level gauge body (1). The upper inner wall of the quick-change oil replenishment connector (10) is provided with an internal thread that mates with the upper cover of the oil level gauge body (1).

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