Non-intrusive converter transformer oil conservator oil position measuring device

Abstract

The invention relates to the technical field of transformer oil level measurement, and discloses a non-intrusive converter transformer oil conservator oil position measuring device which comprises a shell, a liquid level sensor probe used for oil level measurement and a third magnet used for being adsorbed and fixed to the wall of an oil conservator are arranged in the shell, the right surface of the shell is fixedly connected with a fixing base, and the right surface of the shell is fixedly connected with an oil level sensor. An ejection assembly is arranged on the fixing base and used for driving the scraper and the cleaning cotton to be ejected out synchronously so as to achieve progressive separation of the liquid level sensor probe and the oil conservator wall. According to the device, the liquid level sensor probe and the conservator wall can be quickly jacked and separated after measurement is completed, the problem that an existing device is inconvenient to disassemble due to strong adsorption force of a magnet is solved, meanwhile, a stable progressive ejection state can be kept, and the liquid level sensor probe and the conservator wall can be quickly jacked and separated after the liquid level sensor probe is separated from the conservator wall. And the residual coupling agent on the wall surface is cleaned in time, so that the problem that the coupling agent is solidified and hardened to form a thickened residual coating after being exposed for a long time is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of transformer oil level measurement technology, specifically a non-invasive converter transformer oil conservator oil level measurement device. Background Technology

[0002] In the field of power equipment monitoring, for oil level measurement of high-position converter transformer oil conservator, non-invasive measurement does not require damage to the oil conservator's structure and can avoid the risk of insulating oil leakage. Currently, non-invasive measurement devices adopt a structural design with magnetic adsorption and coupling agent assistance. A magnet is integrated on one side of the device, which facilitates quick contact with the outer wall of the oil conservator for positioning. Before measurement, coupling agent needs to be applied to the surface of the sensor probe that contacts the oil conservator wall to eliminate air at the contact surface and ensure the effective transmission of ultrasonic detection signals, thereby realizing the acquisition of oil level data.

[0003] During non-invasive measurement, the sensor probe is attracted and fixed to a flat area on the outer wall of the converter transformer oil conservator using a built-in magnet. This is typically done near the oil level indicator window or in a thinner section of the wall. A coupling agent applied to the probe fills the tiny gap between the probe and the wall, reducing the attenuation of the ultrasonic signal during propagation. The sensor emits ultrasonic pulses into the oil conservator. These pulses penetrate the wall and enter the insulating oil. Upon encountering the oil-air interface, they are reflected, forming an echo. The sensor receives the echo signal, and the built-in processor calculates the time difference between the ultrasonic emission and reception. Combined with the propagation speed of the ultrasonic wave in the oil and the wall material, the oil level height within the conservator is calculated, completing the non-invasive oil level measurement.

[0004] Currently used non-invasive measurement devices with magnetic adsorption and coupling agent assistance have limitations in practical applications. The magnetic adsorption structure is difficult to disassemble. To ensure stable contact between the probe and the wall during measurement, the magnets used in the device have strong adsorption force. However, after the measurement of the high-position converter oil conservator is completed, it is inconvenient for operators to quickly separate the magnet from the oil conservator wall on the ground using an insulating rod, increasing the difficulty of the operation and posing a risk of the device slipping and being damaged. Furthermore, the residual coupling agent affects subsequent measurements. Some of the applied coupling agent will adhere to the outer wall of the oil conservator, and with long-term exposure to the environment, it will gradually solidify and harden, forming a thickened surface residual coating. This coating will change the contact state between the probe and the wall, thereby hindering the penetration efficiency of the ultrasonic signal, resulting in increased signal attenuation and data deviation in the next measurement. Moreover, the cleaning process of the residual coating is cumbersome.

[0005] Therefore, the purpose of this invention is to provide a non-invasive converter oil level measuring device to address the shortcomings of the prior art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a non-invasive converter transformer oil level measuring device. This solves the problem that the magnets used in non-invasive converter transformer oil level measuring devices have strong adsorption forces, and after measuring the oil level of a high-position converter transformer oil level, it is inconvenient for operators to quickly separate the magnets from the oil level wall on the ground using an insulating rod, which increases the difficulty of the operation and also poses a risk of the device slipping and being damaged.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a non-invasive converter oil level measuring device for an oil level measuring device, comprising a housing, wherein a level sensor probe for measuring oil level and a third magnet for adsorbing and fixing to the oil level wall are provided inside the housing, a fixing seat is fixedly connected to the right surface of the housing, and an ejection assembly is provided on the fixing seat. The ejection assembly is used to drive a scraper and a cleaning cotton to be ejected synchronously, so as to achieve gradual separation of the level sensor probe from the oil level wall.

[0008] Preferably, a support plate is fixedly connected to the side surface of the housing, and a guide hole is provided inside the support plate. The inner surface of the guide hole is slidably connected to the movable column.

[0009] Preferably, the ejection assembly includes a dual-head drive cylinder and a movable wheel. The output end of the dual-head drive cylinder is fixedly connected to a movable plate. The movable plate is provided with an inclined surface. The left end of the movable wheel is fixedly connected to a movable column through a fixed plate. A spring is fixedly connected to the left surface of the fixed plate. The left end of the movable column is fixedly connected to a first fixed plate and a second fixed plate respectively. The left surface of the first fixed plate is fixedly connected to a scraper.

[0010] Preferably, the dual-head drive cylinder is fixedly connected to the fixed seat via a support base, a guide rail is fixedly connected to the right inner wall of the fixed seat, there are two movable plates that are symmetrically distributed front and back, the left end of the spring is fixedly connected to the support plate, the end of the movable wheel away from the movable column abuts against the inclined surface, and the movable column passes through the inside of the spring.

[0011] Preferably, a first magnet is fixedly connected to the left surface of the second fixing plate, and a second magnet is fixedly connected to the right surface of the cleaning cotton through a fixing block, and the first magnet and the second magnet attract each other.

[0012] Preferably, a fixing rod is fixedly connected to the side surface of the movable plate, and a guide groove is provided inside the fixing rod, the inner surface of the guide groove being slidably connected to the guide rail.

[0013] Preferably, the liquid level sensor probe is positioned in the mounting area corresponding to the third magnet, and is used to attach to the oil conservator wall to transmit ultrasonic signals for oil level measurement.

[0014] Preferably, the housing is equipped with a Bluetooth sensor for wireless transmission of measurement data, and the housing is also equipped with a device switch, a charging interface and a power display screen, which is used to display the remaining power of the device in real time.

[0015] Preferably, a first connecting block is fixedly connected to the right surface of the fixed base, and a universal ball joint is fitted to the right end of the first connecting block. The right surface of the universal ball joint is connected to a second connecting block, and the universal ball joint is used to realize flexible adjustment of the operating angle.

[0016] Preferably, the right surface of the second connecting block is sequentially connected to a first insulating rod, a second insulating rod, and a third insulating rod, and a controller is fixedly connected to the side surface of the third insulating rod, and the controller is provided with a control button.

[0017] This invention provides a non-invasive converter oil level measuring device. It has the following advantages:

[0018] 1. By setting up a housing, a fixed base, and an ejection assembly, this invention can quickly separate the liquid level sensor probe from the oil conservator wall after measurement. This solves the problem of inconvenient disassembly caused by the strong magnetic attraction of existing devices. Operators can easily complete the separation operation on the ground, reducing the difficulty of measuring oil conservator at high positions. At the same time, it avoids the risk of the device slipping and being damaged during the separation process, thus improving the safety and efficiency of the operation.

[0019] 2. During the separation of the probe from the oil conservator wall, the present invention can maintain a stable and gradual ejection state, avoiding the impact force caused by instantaneous ejection that could cause the device to shake or collide hard with the oil conservator wall. This not only protects the liquid level sensor probe and the oil conservator wall from damage, but also further improves the controllability of the separation operation when working at a high position, ensuring that the entire disassembly process is stable and orderly.

[0020] 3. When the ejector component of this invention is used, the scraper and cleaning cotton can be ejected simultaneously. This allows for immediate cleaning of the coupling agent remaining on the wall after the level sensor probe separates from the oil conservator wall. This effectively avoids the problem of the coupling agent hardening and forming a thickened residual coating after long-term exposure, ensuring the cleanliness of the oil conservator wall and ensuring good contact between the probe and the wall during the next measurement. It also reduces the penetration resistance of ultrasonic signals, thereby reducing measurement data deviation. At the same time, it eliminates the tedious process of cleaning the residual coating separately afterward, improving the continuity and convenience of measurement operations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the shell structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the fixing base structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the ejector assembly structure of the present invention;

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 This is a schematic diagram of the unfolded structure of the movable plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the fixing base structure of the present invention;

[0028] Figure 8 This is a front view of the present invention.

[0029] The components include: 1. Housing; 2. Fixing base; 3. Ejection assembly; 301. Dual-head drive cylinder; 302. Moving plate; 303. Moving wheel; 304. Moving column; 305. Spring; 306. First fixing plate; 307. Second fixing plate; 308. Inclined surface; 309. Fixing piece; 4. Scraper; 5. First magnet; 6. Second magnet; 7. Fixing block; 8. Cleaning cotton; 9. Support plate; 10. Guide hole; 11. Fixing rod; 12. Guide groove; 13. Guide rail; 14. First connecting block; 15. Universal ball joint; 16. Second connecting block; 17. Liquid level sensor probe; 18. Third magnet; 19. Bluetooth sensor; 20. Device switch; 21. Charging interface; 22. Power display screen; 23. Control button; 24. First insulating rod; 25. Second insulating rod; 26. Third insulating rod; 27. Controller. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a non-invasive converter oil level measuring device, including a housing 1. The housing 1 is provided with a level sensor probe 17 for oil level measurement and a third magnet 18 for adsorbing and fixing to the oil level wall. The level sensor probe 17 is set in the mounting area corresponding to the third magnet 18, and is used to attach to the oil level wall to transmit ultrasonic signals for oil level measurement.

[0032] Specifically, the detection end face of the liquid level sensor probe 17 is constructed to be flat and compatible with the oil conservator wall, ensuring a tight fit with the oil conservator wall after the coupling agent is applied, reducing energy loss of the ultrasonic signal in the propagation path, and ensuring measurement accuracy. The third magnet 18 is made of a high-magnetic-strength permanent magnet. The third magnet 18 is installed around the outer periphery of the liquid level sensor probe 17 to form a uniform adsorption force field. The third magnet 18 not only ensures stable contact between the device and the oil conservator wall during the measurement process and avoids the liquid level sensor probe 17 from shifting due to slight shaking during high-level operation, but also provides a reasonable adsorption force basis for subsequent rapid separation.

[0033] By combining the adsorption force design of the third magnet 18 with the synergistic action of the ejection component 3, the stability of the device during measurement can be guaranteed, and the liquid level sensor probe 17 can be quickly ejected and separated from the oil conservator wall after the measurement is completed. This solves the problem of inconvenient disassembly caused by the strong adsorption force of the third magnet 18 in the existing device. The operator can easily complete the separation operation on the ground, which reduces the difficulty of measuring the oil conservator at a high position and avoids the risk of the device slipping and being damaged during the separation process, thus improving the safety and efficiency of the operation.

[0034] The liquid level sensor probe 17 outputs data according to a specific communication protocol. The data packet contains the liquid level height value and temperature value. The liquid level sensor probe 17 has a self-calibration mechanism. After power-on initialization, if the liquid level is detected, the first data is the initial value. Then, it enters a sudden rise mode of about 30 seconds. During this period, rapid calibration is performed, and finally, a stable and accurate liquid level height is output. The self-calibration mechanism is a prior art technology. Its core function is to improve the accuracy and reliability of the initial measurement and avoid measurement errors caused by equipment initialization deviation.

[0035] A fixed base 2 is fixedly connected to the right surface of the housing 1. An ejection assembly 3 is provided on the fixed base 2. The ejection assembly 3 is used to drive the scraper 4 and the cleaning cotton 8 to be ejected synchronously, so as to realize the gradual separation of the liquid level sensor probe 17 from the oil pillow wall.

[0036] Specifically, the fixing base 2 is integrally formed from high-strength aluminum alloy. The fixing base 2 has a reserved installation cavity and movement space for the ejector assembly 3. The fixing base 2 not only ensures the rigidity of the overall structure, but also avoids interference when the parts move, providing structural support for the stable operation of the ejector assembly 3. When the ejector assembly 3 is in use, it applies a uniform and gradually increasing pushing force to the adsorption surface of the third magnet 18 and the oil conservator wall, so that the adsorption surface gradually separates rather than separating instantaneously. This avoids the shaking of the device or hard collision with the oil conservator wall caused by instantaneous impact, protecting the detection end face of the liquid level sensor probe 17 and the oil conservator wall from damage. It also allows the operator to easily separate the parts on the ground by using the first insulating rod 24, the second insulating rod 25, and the third insulating rod 26, reducing the difficulty of high-position operations and improving the safety and efficiency of the operation.

[0037] The ejector assembly 3 includes a dual-head drive cylinder 301 and a moving wheel 303. The output end of the dual-head drive cylinder 301 is fixedly connected to a moving plate 302. The moving plate 302 is provided with an inclined surface 308. The left end of the moving wheel 303 is fixedly connected to a moving column 304 through a fixing plate 309. A spring 305 is fixedly connected to the left surface of the fixing plate 309. The left end of the moving column 304 is fixedly connected to a first fixing plate 306 and a second fixing plate 307 respectively. The left surface of the first fixing plate 306 is fixedly connected to the scraper 4.

[0038] Specifically, the dual-head drive cylinder 301 is the power drive component of the ejection assembly 3, adopting a bidirectional output structure. The output power of the dual-head drive cylinder 301 is precisely matched to provide sufficient driving force to achieve the ejection action, while controlling the output speed at the output end of the dual-head drive cylinder 301 to avoid impact problems caused by excessive ejection. The inclined surface 308 on the moving plate 302 adopts a specific angle design. This angle is optimized according to the diameter of the moving wheel 303 and the required ejection stroke of the moving column 304, so that the linear movement of the moving plate 302 can pass through the inclined surface 308. The rolling engagement of the 08 and the moving wheel 303 smoothly transforms into the axial ejection motion of the moving column 304. The fixing plate 309 is used to firmly connect the moving wheel 303 and the moving column 304 to ensure the effective transmission of force during the transmission process. The spring 305 is sleeved on the outside of the moving column 304. The preload of the spring 305 is set to match the magnitude of the attraction force of the third magnet 18. During the ejection process, the elastic deformation of the spring 305 can buffer the driving force transmitted by the moving plate 302, so that the ejection speed of the moving column 304 remains stable, further ensuring the effect of gradual separation.

[0039] The first fixing plate 306 and the second fixing plate 307 serve as the mounting carriers for the scraper 4 and the cleaning cotton 8. The flatness of the first fixing plate 306 and the second fixing plate 307 is precisely machined to ensure that the scraper 4 and the cleaning cotton 8 can maintain parallel contact with the oil pillow wall after being ejected, providing structural protection for subsequent cleaning of the coupling agent. When the ejector assembly 3 is in use, the scraper 4 and the cleaning cotton 8 can be ejected simultaneously, enabling immediate cleaning of the coupling agent remaining on the wall surface after the level sensor probe 17 separates from the oil pillow wall. This effectively avoids the problem of the coupling agent solidifying and hardening after long-term exposure, forming a thickened residual coating, ensuring the cleanliness of the oil pillow wall surface, ensuring good contact between the probe and the wall surface during the next measurement, reducing the penetration resistance of the ultrasonic signal, and thus reducing the measurement data deviation. At the same time, it eliminates the tedious process of cleaning the residual coating separately afterward, improving the continuity and convenience of the measurement operation.

[0040] A support plate 9 is fixedly connected to the side surface of the housing 1. A guide hole 10 is provided inside the support plate 9. The inner surface of the guide hole 10 is slidably connected to the moving column 304. The left end of the spring 305 is fixedly connected to the support plate 9. The end of the moving wheel 303 away from the moving column 304 abuts against the inclined surface 308. The moving column 304 passes through the inside of the spring 305.

[0041] Specifically, the support plate 9 is vertically fixed to the side surface of the housing 1. The support plate 9 is made of thick-walled steel plate and has sufficient load-bearing strength. It is used to provide a fixed support point for the spring 305 and a guide reference for the moving column 304. The inner diameter of the guide hole 10 and the outer diameter of the moving column 304 are designed with clearance fit, which can ensure the smooth sliding of the moving column 304 and limit the radial displacement of the moving column 304, ensuring the precise movement trajectory of the scraper 4 and the cleaning cotton 8 during the ejection process.

[0042] The left end of spring 305 is fixed to support plate 9, and the right end abuts against fixed plate 309. When the ejection action is performed, moving plate 302 pushes moving wheel 303 to move to the left, and fixed plate 309 compresses spring 305 accordingly. The reaction force generated by spring 305 is balanced with the driving force of moving plate 302, so that the ejection process of moving column 304 is uniform and controllable, avoiding the impact force generated by instantaneous ejection that causes the device to shake or collide hard with the oil conservator wall. This not only protects the liquid level sensor probe 17 and the oil conservator wall from damage, but also further improves the controllability of separation operation when working at a high position, ensuring that the entire disassembly process is stable and orderly. After the ejection action is completed, double-headed drive cylinder 301 is reset in the reverse direction, the elastic potential energy of spring 305 is released, and the fixed plate 309, moving wheel 303 and moving column 304 are reset in the reverse direction, preparing for the next measurement.

[0043] The left surface of the second fixing plate 307 is fixedly connected to the first magnet 5, and the right surface of the cleaning cotton 8 is fixedly connected to the second magnet 6 through the fixing block 7. The first magnet 5 and the second magnet 6 attract each other.

[0044] Specifically, both the first magnet 5 and the second magnet 6 are small, strong magnets. The magnetic poles of the first magnet 5 and the second magnet 6 are set in a corresponding manner to ensure a stable adsorption force, thereby realizing the detachable connection between the cleaning cotton 8 and the second fixing plate 307. The magnetic detachable connection design not only ensures the installation stability of the cleaning cotton 8 during the ejection cleaning process and avoids the cleaning cotton 8 from falling off due to vibration or contact pressure, but also makes it convenient for operators to quickly replace the cleaning cotton 8 after it has absorbed too much coupling agent or is worn, without the need for tools, thus improving the ease of operation and maintenance of the device.

[0045] The fixing block 7 is made of hard plastic. The size of the fixing block 7 is adapted to the installation area of ​​the cleaning cotton 8. It is used to firmly fix the second magnet 6 to the cleaning cotton 8, ensuring that the adsorption force can be evenly transmitted to the entire cleaning cotton 8 and avoiding local detachment. After the cleaning cotton 8 is quickly assembled by magnetic attraction, it can work together with the scraper 4 to wipe the coupling agent on the oil pillow wall in time after the liquid level sensor probe 17 is separated, effectively preventing the coupling agent from solidifying and hardening. The detachable design further ensures the continuity of the cleaning effect, ensuring that good cleaning ability can be maintained by replacing the cleaning cotton 8 after each measurement.

[0046] The dual-head drive cylinder 301 is fixedly connected to the fixed base 2 via a support base. The right inner wall of the fixed base 2 is fixedly connected to a guide rail 13. There are two moving plates 302, which are symmetrically distributed front and back. The side surface of the moving plate 302 is fixedly connected to a fixing rod 11. The inside of the fixing rod 11 is provided with a guide groove 12. The inner surface of the guide groove 12 is slidably connected to the guide rail 13.

[0047] Specifically, the support base is fixed to the fixed base 2 by welding. The support base provides a stable mounting foundation for the dual-head drive cylinder 301, preventing vibration or displacement of the dual-head drive cylinder 301 during operation and ensuring the stability of the output force. The length of the guide rail 13 is adapted to the required movement stroke of the moving plate 302. The surface of the guide rail 13 is hardened to improve wear resistance and guiding accuracy. The two symmetrically distributed moving plates 302 correspond to the moving wheels 303 on both sides, ensuring that the moving column 304 is subjected to symmetrical driving force, preventing the moving column 304 from tilting due to uneven force during ejection, and further ensuring the smoothness of the gradual separation. The fixed rod 11 and the movable plate 302 are integrally formed. The guide groove 12 inside the fixed rod 11 forms a sliding fit with the guide rail 13. The guide groove 12 and the guide rail 13 are designed to restrict the movement direction of the movable plate 302, so that the movable plate 302 can only move linearly along the guide rail 13, avoiding lateral deviation or torsion, ensuring that the contact position between the inclined surface 308 and the movable wheel 303 is always consistent, and ensuring the stability of the transmission ratio.

[0048] The housing 1 contains a Bluetooth sensor 19 for wirelessly transmitting measurement data. The housing 1 also contains a device switch 20, a charging port 21, and a power display screen 22, which displays the remaining power of the device in real time.

[0049] Specifically, the Bluetooth sensor 19 uses a low-power Bluetooth module. The Bluetooth sensor 19's communication protocol matches the UUID and baud rate preset in the mobile terminal APP, enabling it to wirelessly transmit oil level and temperature data collected by the liquid level sensor probe 17 to the operator's smartphone in real time. This eliminates the need for wiring, enabling remote data reception for high-position operations, improving maintenance efficiency. Furthermore, the lack of wiring allows for immediate use, making it suitable for temporary monitoring, inspections, and emergency diagnostics. The device switch 20 features a waterproof and dustproof design and controls the power supply to the entire device. A battery pack is housed inside the casing 1, and the charging port 21 supports fast charging, quickly replenishing the battery pack. The battery display screen 22 shows the remaining battery percentage in real time, allowing operators to plan measurement operations in advance and preventing measurement interruptions due to insufficient power, thus improving the device's reliability.

[0050] The right surface of the fixed base 2 is fixedly connected to the first connecting block 14. The right end of the first connecting block 14 is equipped with a universal ball head 15. The right surface of the universal ball head 15 is connected to the second connecting block 16. The universal ball head 15 is used to realize the flexible adjustment of the operating angle.

[0051] Specifically, the first connecting block 14 and the fixed base 2 are fixedly connected by bolts for easy disassembly and maintenance. The fixed base 2 has a reserved wire channel to accommodate the connecting wires of components such as the Bluetooth sensor 19 and the device switch 20, ensuring neat wiring and preventing wire tangling from affecting component movement. The universal ball joint 15 is made of high-strength wear-resistant alloy material. The fit clearance between the ball head and the socket of the universal ball joint 15 has been precisely adjusted to achieve multi-angle and all-round angle adjustment, while maintaining sufficient locking force at any angle to prevent angle deviation caused by external force during measurement or cleaning. The angle adjustment of the universal ball joint 15 allows the operator to flexibly adjust the contact angle and pressure between the scraper 4 and the cleaning cotton 8 and the oil conservator wall through the first insulating rod 24, the second insulating rod 25, and the third insulating rod 26, ensuring thorough scraping and wiping of coupling agent at different locations and with different residual amounts, and is suitable for cleaning high-position oil conservator walls. Meanwhile, during the measurement phase, the universal ball joint 15 can assist in adjusting the contact angle of the liquid level sensor probe 17 to ensure that the liquid level sensor probe 17 maintains the best contact state with the oil conservator wall, thereby improving measurement accuracy. During the separation phase, the angle adjustment function can assist the operator in adjusting the separation direction, further reducing the risk of slippage and improving operational safety.

[0052] The right surface of the second connecting block 16 is sequentially connected to the first insulating rod 24, the second insulating rod 25 and the third insulating rod 26. The side surface of the third insulating rod 26 is fixedly connected to the controller 27, and the controller 27 is provided with the control button 23.

[0053] Specifically, the first insulating rod 24, the second insulating rod 25, and the third insulating rod 26 are all made of epoxy resin, possessing excellent insulation performance and mechanical strength. They can withstand the strong electromagnetic environment of high-voltage substations, ensuring the personal safety of operators performing high-position operations on the ground. The surfaces of the first insulating rod 24, the second insulating rod 25, and the third insulating rod 26 are all equipped with anti-slip textures for easy gripping. The control button 23 on the surface of the third insulating rod 26 is electrically connected to the dual-head drive cylinder 301. The control button 23 features a large-sized design with anti-slip protrusions, facilitating precise operation when the operator is wearing insulating gloves. The controller 27 is electrically connected to the dual-head drive cylinder 301 via built-in wires. The operator can activate the ejection assembly 3 from the ground using the control button 23 to achieve the gradual separation of the liquid level sensor probe 17 and the synchronous cleaning of the coupling agent, without close contact with high-voltage equipment, reducing operational difficulty and safety risks.

[0054] Working principle: When using this device, by applying coupling agent to the liquid level sensor probe 17, the liquid level sensor probe 17 is lifted to a suitable position under the action of the first insulating rod 24, the second insulating rod 25, and the third insulating rod 26. The third magnet 18 contacts the oil conservator wall, fixing the liquid level sensor probe 17 in its working position. The oil level of the converter oil conservator is then measured. After the measurement is completed, the dual-head drive cylinder 301 is activated. The output end of the dual-head drive cylinder 301 moves, driving the moving plate 302 to move. The moving wheel 303 moves on the moving plate 302. The movement of the moving column 304, driven by the action of 2, compresses the spring 305. The moving column 304 slides in the guide hole 10, driving the first fixed plate 306, scraper 4, second fixed plate 307, first magnet 5, second magnet 6, fixed block 7 and cleaning cotton 8 to be pushed out, so as to facilitate the gradual separation of the third magnet 18 from the oil pillow wall. The operator uses the first insulating rod 24, second insulating rod 25 and third insulating rod 26 to drive the scraper 4 and cleaning cotton 8 to move. The scraper 4 and cleaning cotton 8 can scrape and wipe the coupling agent adhering to the oil pillow wall.

Claims

1. A non-invasive converter oil level measuring device, comprising a housing (1), characterized in that, The housing (1) is provided with a liquid level sensor probe (17) for oil level measurement and a third magnet (18) for adsorption and fixation to the oil pillow wall. A fixing seat (2) is fixedly connected to the right surface of the housing (1). An ejection assembly (3) is provided on the fixing seat (2). The ejection assembly (3) is used to drive the scraper (4) and cleaning cotton (8) to be ejected synchronously, so as to realize the gradual separation of the liquid level sensor probe (17) from the oil pillow wall.

2. The non-invasive converter oil level measuring device according to claim 1, characterized in that, A support plate (9) is fixedly connected to the side surface of the housing (1). A guide hole (10) is provided inside the support plate (9). The inner surface of the guide hole (10) is slidably connected to the moving column (304).

3. The non-invasive converter oil level measuring device according to claim 2, characterized in that, The ejection assembly (3) includes a dual-head drive cylinder (301) and a moving wheel (303). The output end of the dual-head drive cylinder (301) is fixedly connected to a moving plate (302). An inclined surface (308) is provided on the moving plate (302). The left end of the moving wheel (303) is fixedly connected to a moving column (304) through a fixing plate (309). A spring (305) is fixedly connected to the left surface of the fixing plate (309). The left end of the moving column (304) is fixedly connected to a first fixing plate (306) and a second fixing plate (307). The left surface of the first fixing plate (306) is fixedly connected to a scraper (4).

4. The non-invasive converter oil level measuring device according to claim 1, characterized in that, The dual-head drive cylinder (301) is fixedly connected to the fixed seat (2) via a support base. The right inner wall of the fixed seat (2) is fixedly connected to a guide rail (13). There are two moving plates (302) and they are symmetrically distributed front and back. The left end of the spring (305) is fixedly connected to the support plate (9). The end of the moving wheel (303) away from the moving column (304) abuts against the inclined plane (308). The moving column (304) passes through the inside of the spring (305).

5. The non-invasive converter oil level measuring device according to claim 1, characterized in that, The left surface of the second fixing plate (307) is fixedly connected to the first magnet (5), and the right surface of the cleaning cotton (8) is fixedly connected to the second magnet (6) by the fixing block (7). The first magnet (5) and the second magnet (6) attract each other.

6. The non-invasive converter oil level measuring device according to claim 5, characterized in that, A fixing rod (11) is fixedly connected to the side surface of the movable plate (302). A guide groove (12) is provided inside the fixing rod (11). The inner surface of the guide groove (12) is slidably connected to the guide rail (13).

7. The non-invasive converter oil level measuring device according to claim 1, characterized in that, The liquid level sensor probe (17) is set in the mounting area corresponding to the third magnet (18) and is used to attach to the oil pillow wall to transmit ultrasonic signals for oil level measurement.

8. The non-invasive converter oil level measuring device according to claim 1, characterized in that, The housing (1) is equipped with a Bluetooth sensor (19) for wireless transmission of measurement data. The housing (1) is also equipped with a device switch (20), a charging interface (21), and a power display screen (22). The power display screen (22) is used to display the remaining power of the device in real time.

9. The non-invasive converter oil level measuring device according to claim 1, characterized in that, The right surface of the fixed base (2) is fixedly connected to a first connecting block (14), and the right end of the first connecting block (14) is equipped with a universal ball head (15). The right surface of the universal ball head (15) is connected to a second connecting block (16), and the universal ball head (15) is used to realize flexible adjustment of the operating angle.

10. A non-invasive converter oil level measuring device according to claim 9, characterized in that, The right surface of the second connecting block (16) is sequentially connected to the first insulating rod (24), the second insulating rod (25) and the third insulating rod (26). The side surface of the third insulating rod (26) is fixedly connected to the controller (27), and the controller (27) is provided with the control button (23).

Images