Quick tap switch for voltage regulator

Abstract

The invention discloses a quick tap switch for a voltage regulator, and relates to the technical field of voltage regulating devices, the quick tap switch comprises a sealing shell serving as a sealing protective shell of the whole device, and a magnetic coupling driving assembly which comprises an internal permanent magnet rotor and a tap switch driving disc, and through cooperation of the magnetic coupling driving assembly and a driving adjusting assembly, cooperation is formed, and the tap switch driving disc is driven to rotate. A triple drive redundancy system is constructed, fault shutdown is thoroughly solved, under the normal working condition, the magnetic coupling drive assembly transmits power through a non-contact magnetic field, the external permanent magnet rotor and the internal permanent magnet rotor are not in physical contact, and the sealing failure caused by the fact that a traditional mechanical shaft penetrates through a sealing shell and the failure of a main drive motor are avoided. A standby motor of the driving adjusting assembly is rapidly started through wireless power supply, a tap switch driving disc is driven through worm and worm gear transmission, when the standby motor fails, an emergency magnetic driving head of a wireless driving terminal can be manually attached to the tap switch driving disc, and it is ensured that voltage regulation is not interrupted.

Description

Technical Field

[0001] This invention relates to the field of voltage regulating device technology, specifically a quick tap changer for a voltage regulator. Background Technology

[0002] A voltage regulator is an electrical device used to change the voltage connected to a load device. Its basic principle is that it has multiple transformer windings inside, and taps are led out from the transformer windings. By switching the taps connected to the electrical device, the voltage ratio can be changed, thereby achieving the purpose of voltage regulation.

[0003] To facilitate quick switching of taps, a tap switch is usually used to control each tap individually. The tap switch has a drive disc that is connected to the tap, and a drive motor that can drive the drive disc to rotate is connected to the outside of the tap switch. By controlling the drive motor, the tap can be switched, thereby realizing the voltage regulation function of the voltage regulator.

[0004] Currently, in actual use, the drive disc is driven by only a single drive motor. When the drive motor fails, it cannot properly perform the voltage regulation function of the tap changer, which is inconvenient and has poor reliability. Furthermore, a single drive motor can only provide power at a fixed speed and direction, and cannot achieve fine-tuning of small gears or multi-directional drive (such as when the windings inside the voltage regulator are distributed in different quadrants, requiring the drive disc to change its rotation direction), resulting in low voltage regulation accuracy and poor adaptability. Summary of the Invention

[0005] The purpose of this invention is to provide a quick tap changer for voltage regulators to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick tap changer for a voltage regulator, comprising: A sealed housing, which serves as a sealed protective enclosure for the entire device; A magnetic coupling drive assembly includes an internal permanent magnet rotor and a tap changer drive disk. The internal permanent magnet rotor is installed inside a sealed housing and fixedly connected to the tap changer drive disk. An external permanent magnet rotor is located outside the sealed housing and connected to a main drive motor. The internal permanent magnet rotor and the external permanent magnet rotor are magnetically coupled in a non-contact manner. A sensing unit is installed outside the tap changer drive disk. The sensing unit includes an angle sensor for monitoring tap changer position information and a temperature sensor for monitoring temperature rise information. A wireless drive assembly includes a wireless drive terminal installed outside a sealed housing and a backup drive terminal installed inside the sealed housing. The wireless drive terminal has a built-in wireless energy transmitting module and a first wireless communication module. The backup drive terminal includes a wireless energy receiving module, a backup motor, and a rectifier and voltage regulator circuit for powering the backup motor. A drive adjustment assembly is used to drive the tap changer drive disk in different positions. The drive adjustment assembly includes a worm and a worm wheel, which mesh with each other. A first electromagnetic blocker is installed at the center end of the worm wheel, and a drive shaft is installed at the center end of the first electromagnetic blocker. The drive shaft is connected to the tap changer drive disk. The main controller is installed inside a sealed housing and is electrically connected to the sensing unit and the backup motor. It is also equipped with a second wireless communication module for data interaction with the wireless drive terminal.

[0007] Preferably, the sensing unit further includes a vibration sensor for monitoring the operating vibration spectrum of the magnetic coupling drive component. The main controller further has the function of continuously collecting and storing the timing data of the angle sensor, temperature sensor, vibration sensor and the current data of the main drive motor, and uploading the data to the cloud server through the second wireless communication module. Based on the health model established by the cloud server, the real-time data is analyzed, and when the data deviates from the health model, the remaining service life prediction and fault warning information for the magnetic coupling drive component are generated.

[0008] Preferably, the sensing unit further includes a Hall sensor array arranged in a ring around the internal permanent magnet rotor for real-time monitoring of the magnetic field distribution intensity and uniformity of the internal permanent magnet rotor. The main controller is used to receive signals from the Hall sensor array and generate an alarm for moderate abnormality of magnetic coupling when it is determined that the magnetic field distribution is abnormal.

[0009] Preferably, the magnetic coupling drive assembly further includes a piezoelectric ceramic actuator mounted on the external permanent magnet rotor mounting base. After generating an alignment abnormality alarm, the main controller controls the piezoelectric ceramic actuator to finely adjust the position of the external permanent magnet rotor so that it is precisely aligned with the internal permanent magnet rotor again. A concentricity detection structure is installed at the bottom of the piezoelectric ceramic actuator. An angle tooth groove is formed on the bottom surface of the concentricity detection structure, and an angle deviation detection gear is meshed inside the angle tooth groove.

[0010] Preferably, the bottom of the wireless driving terminal is provided with an emergency magnetic driving head, and the sealed shell is provided with an emergency driving marking area corresponding to the emergency magnetic driving head. The wireless driving terminal can be selectively placed in the emergency driving position, and the emergency magnetic driving head forms a magnetic coupling with the tap changer drive disk, thereby directly driving the tap changer.

[0011] Preferably, the drive adjustment assembly further includes a drive belt, which is driven by a backup motor to drive the worm to rotate along its own axis. An adjustment belt is installed on the outside of the side end of the worm, and a second electromagnetic stopper is installed at the connection end of the adjustment belt and the drive belt with the worm.

[0012] Preferably, a first drive connecting rod is connected to one side of the adjusting belt, and a drive gear is installed on the other side of the worm gear, with an inner rotating gear ring meshing with the side of the drive gear.

[0013] Preferably, a third electromagnetic stopper is installed at the connection end of the drive gear and the inner rotating gear ring, a connecting and limiting rotating groove is rotatably connected to the outside of the inner rotating gear ring, and a second drive connecting rod is connected to the center end of the inner rotating gear ring through the surface of the sealing shell.

[0014] Preferably, the wireless energy transmitting module and the wireless energy receiving module achieve energy transmission through electromagnetic induction or magnetic resonance.

[0015] Preferably, a buffer structure is provided at the bottom of the inner part of the sealed housing, and a mounting slot is provided at the top of the buffer structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In this invention, by cooperating with the magnetic coupling drive component and the drive adjustment component, a synergistic effect is achieved, and a triple drive redundancy system is constructed to completely solve the problem of downtime due to faults. Under normal operating conditions, the magnetic coupling drive component transmits power through a non-contact magnetic field, with no physical contact between the external permanent magnet rotor and the internal permanent magnet rotor, avoiding the seal failure caused by the penetration of the sealed shell by the traditional mechanical shaft. When the main drive motor fails, the backup motor of the drive adjustment component starts quickly via wireless power supply and drives the tap changer drive plate through worm gear transmission. When the backup motor fails, the emergency magnetic drive head of the wireless drive terminal can manually engage with the tap changer drive plate to ensure uninterrupted voltage regulation. The drive adjustment component can also achieve fine-tuning of the gear position through the adjustment belt to correct minor deviations of the tap changer drive plate. It can also switch the drive position through the drive gear and the inner rotating gear ring to adapt to different winding layouts of the voltage regulator. At the same time, the sensing unit, combined with a cloud-based health model, can monitor parameters such as magnetic field and vibration in real time, providing early warning of faults and remaining lifespan, thus transforming passive maintenance into proactive operation and maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of a quick tap changer for a voltage regulator according to the present invention; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the main body of a quick tap changer for a voltage regulator according to the present invention; Figure 3This is a schematic diagram of the installation position of the magnetic coupling drive component in a fast tap changer for a voltage regulator according to the present invention. Figure 4 This is a schematic diagram of the installation position of the drive adjustment component in a quick tap changer for a voltage regulator according to the present invention. Figure 5 This is a schematic diagram of the magnetic coupling drive component in a fast tap changer for a voltage regulator according to the present invention.

[0018] In the diagram: 100, Sealed outer shell; 200, Magnetic coupling drive assembly; 201, External permanent magnet rotor; 202, Piezoelectric ceramic actuator; 203, Concentricity detection structure; 204, Angle deviation detection gear; 205, Angle sensor; 206, Internal permanent magnet rotor; 207, Hall sensor array; 208, Tap switch drive disk; 209, Vibration sensor; 300, Wireless drive terminal; 400, Mounting base; 500, Buffer structure; 600, Backup drive terminal; 700, Main controller; 800, Drive adjustment assembly; 801, Backup motor; 802, Drive belt; 803, Worm gear; 804, Adjustment belt; 805, First drive connecting rod; 806, Worm wheel; 807, First electromagnetic stopper; 808, Inner rotating gear ring; 809, Limiting rotating groove disk; 810, Drive gear. Detailed Implementation

[0019] The technical solutions of 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.

[0020] To address the problem that relying solely on a single drive motor for driving the drive plate can lead to a failure of the drive motor and prevent the drive plate from properly performing tap changer voltage regulation, this invention provides a quick tap changer for a voltage regulator, as described above. Figure 1 and Figure 2As shown: Specifically, it includes a magnetic coupling drive assembly 200 and a drive adjustment assembly 800. The magnetic coupling drive assembly 200 enables the main drive motor to start and rotate the external permanent magnet rotor 201 (located outside the sealed housing 100) during normal voltage regulation. The external permanent magnet rotor 201, through non-contact magnetic coupling (without penetrating the sealed housing 100, ensuring sealing), synchronously drives the internal permanent magnet rotor 206 inside the sealed housing 100 to rotate. The internal permanent magnet rotor 206 is fixedly connected to the tap changer drive disk 208, thereby driving the tap changer drive disk 208 to rotate, realizing the switching of the voltage regulator's taps, and ultimately completing the voltage regulation operation. When fine-tuning of the rotation angle or drive position of the tap changer drive disk 208 is required during voltage regulation, the main controller 700 can control the drive adjustment assembly 800 to perform the operation, allowing the drive adjustment assembly 800 to analyze and judge the operation based on the operational fault conditions of the magnetic coupling drive assembly 200.

[0021] Based on the above scheme, the detailed operation of the magnetic coupling drive component 200 is as follows: According to Figures 3-5As shown, the magnetic coupling drive assembly 200 includes an internal permanent magnet rotor 206 and a tap changer drive disk 208. The internal permanent magnet rotor 206 is installed inside the sealed housing 100 and fixedly connected to the tap changer drive disk 208, and an external permanent magnet rotor 201 is located outside the sealed housing 100 and connected to the main drive motor. The internal permanent magnet rotor 206 and the external permanent magnet rotor 201 are magnetically coupled in a non-contact manner. A sensing unit is installed on the outside of the tap changer drive disk 208. The sensing unit includes an angle sensor 205 for monitoring tap changer position information and a temperature sensor for monitoring temperature rise information. The sensing unit also includes a vibration sensor 209 for monitoring the operating vibration spectrum of the magnetic coupling drive assembly 200. The main controller 700 further continuously acquires and stores timing data from the angle sensor 205, temperature sensor, vibration sensor 209, and current data from the main drive motor, and uploads the data to a cloud server via a second wireless communication module. Based on a health model established on the cloud server, the real-time data is analyzed, and when the data deviates from the health model, a prediction of the remaining service life of the magnetic coupling drive assembly 200 and a fault warning are generated. The sensing unit further includes a Hall sensor array 207 arranged in a ring around the internal permanent magnet rotor 206 for real-time monitoring of the magnetic field distribution intensity and uniformity of the internal permanent magnet rotor 206. The main controller 700 receives signals from the Hall sensor array 207 and generates a moderate abnormality alarm for the magnetic coupling when an abnormal magnetic field distribution is detected. The magnetic coupling drive assembly 200 also includes a piezoelectric ceramic actuator 202 mounted on the mounting base of the external permanent magnet rotor 201. After generating an alignment error alarm, the main controller 700 controls the piezoelectric ceramic actuator 202 to fine-tune the position of the external permanent magnet rotor 201, so that it is precisely aligned with the internal permanent magnet rotor 206 again. A concentricity detection structure 203 is installed at the bottom of the piezoelectric ceramic actuator 202. An angle tooth groove is formed on the bottom surface of the concentricity detection structure 203, and an angle deviation detection gear 204 is meshed inside the angle tooth groove. When the voltage regulator needs to perform voltage adjustment, the main drive motor connected to the external permanent magnet rotor 201 is started first. The external permanent magnet rotor 201, as the external power receiving end of the entire power transmission, is installed outside the sealed housing 100. The torque of the main drive motor directly drives the external permanent magnet rotor 201 to rotate stably around its own axis. At this time, due to the pre-set magnetic attraction and coupling relationship between the external permanent magnet rotor 201 (neodymium iron boron permanent magnet) and the internal permanent magnet rotor 206 inside the sealed shell 100 (the magnetic poles of the two correspond and no physical contact is required), the rotation of the external permanent magnet rotor 201 will synchronously pull the internal permanent magnet rotor 206 to rotate through the magnetic field force, realizing non-contact power transmission, reducing the sealing failure problem caused by the penetration of the shell by the traditional mechanical shaft (such as oil leakage and dust entry), while reducing mechanical wear and extending the overall service life of the component.Next, the tap changer drive disk 208, fixedly connected to the internal permanent magnet rotor 206, rotates synchronously with the rotation of the internal permanent magnet rotor 206 (neodymium iron boron permanent magnet). At this time, the tap changer drive disk 208, as the core component directly driving the tap changer, has its rotation angle directly corresponding to the tap changer's switching position. For example, when the tap changer drive disk 208 rotates clockwise or counterclockwise to a preset angle, it will cause the tap changer inside the voltage regulator to contact different winding terminals, changing the voltage ratio and ultimately adjusting the voltage regulator's output voltage. In this process, the rotational accuracy of the tap changer drive disk 208 directly determines the voltage regulation accuracy. The rigid fixed connection between the internal permanent magnet rotor 206 and the drive disk (such as keyway fit or welding fixation) ensures zero slippage in power transmission, avoiding shifting deviations caused by power loss. At this time, while power transmission and pressure regulation are carried out simultaneously, the sensing unit built into the magnetic coupling drive assembly 200 is always active, monitoring key parameters of the assembly's operation in real time. An angle sensor 205, installed on the outside of the tap changer drive disk 208, directly collects the rotation angle data of the tap changer drive disk 208, providing real-time feedback on the current tap changer position. If the rotation angle of the tap changer drive disk 208 deviates from the preset position, the angle sensor 205 immediately transmits the deviation signal to the main controller 700, providing a basis for possible subsequent fine-tuning. Simultaneously, a temperature sensor is placed close to the magnetic coupling area inside the sealed housing 100 (near the internal permanent magnet rotor 206) to monitor the temperature rise caused by magnetic field interaction and slight friction of the drive components during magnetic coupling. If the temperature rise exceeds a preset safety threshold (e.g., ambient temperature exceeds 40°C), a timely warning can be issued to prevent overheating damage to the assembly. Meanwhile, a vibration sensor 209 is fixed to the side of the tap changer drive disk 208, collecting data on the vibration of the magnetic coupling drive assembly 200 during operation. Vibration spectrum data allows for abnormal peaks in the vibration spectrum when there is a misalignment between the external permanent magnet rotor 201 and the internal permanent magnet rotor 206, or when there is a slight abnormal noise from the main drive motor. The vibration sensor 209 can capture and upload this signal. In this process, the Hall sensor array 207, which is arranged in a ring around the internal permanent magnet rotor 206, monitors the magnetic field distribution intensity and uniformity of the internal permanent magnet rotor 206 in real time at a uniform sampling interval. Since the efficiency of magnetic coupling depends on the symmetrical alignment of the magnetic fields of the inner and outer rotors, if the magnetic field of the internal rotor is locally weakened or the magnetic field distribution is biased to one side, the Hall sensor array 207 can accurately identify the abnormality. After the sensing unit completes real-time data acquisition, the main controller 700 installed inside the sealed housing 100 takes over all the monitoring data. The main controller 700 first summarizes and performs preliminary filtering (removing high-frequency interference signals) on the timing data collected by the angle sensor 205, temperature sensor, vibration sensor 209, and Hall sensor array 207, as well as the real-time current data of the main drive motor.Subsequently, the main controller 700 uploads the processed complete data to a preset cloud server through its internally configured second wireless communication module. This allows the cloud server to pre-establish a health operation model for the magnetic coupling drive component 200. This model is trained based on a large amount of normal operation and fault data of similar components. It can compare and analyze the real-time uploaded data and perform operations through the built-in predictive controller. If the real-time data (such as vibration peak value, magnetic field non-uniformity) is within the normal fluctuation range of the health model, the magnetic coupling drive component 200 is determined to be operating normally. If the data deviates from the health model threshold (such as magnetic field non-uniformity exceeding the threshold), subsequent warning and processing steps are immediately triggered.

[0022] In addition, after the cloud server analyzes the data, if it reports a magnetic coupling neutrality abnormality (triggered by an abnormal magnetic field distribution collected by the Hall sensor array 207), the main controller 700 will first generate a magnetic coupling neutrality abnormality alarm (which can be sent to the on-site maintenance terminal via the wireless communication module, or displayed on the indicator light outside the sealed housing 100). Next, the main controller 700 automatically sends an action command to the piezoelectric ceramic actuator 202 mounted on the external permanent magnet rotor 201 mounting base, causing the piezoelectric ceramic actuator 202 to generate micron-level expansion and contraction deformation according to the command. If the Hall sensor array 207 detects that the magnetic field of the internal permanent magnet rotor 206 is biased to the left, the piezoelectric ceramic actuator 202 causes the external permanent magnet rotor 201 mounting base to be slightly adjusted to the left; if it is biased to the right, it is slightly adjusted to the right, thus gradually correcting the position of the external permanent magnet rotor 201 to match the center of the magnetic field of the internal permanent magnet rotor 206. Then, the concentricity detection structure 203 mounted on the bottom of the piezoelectric ceramic actuator 202 is verified. Angle tooth grooves are formed on the bottom surface of the concentricity detection structure 203. The angle tooth grooves mesh with the angle deviation detection gear 204 to form a rotary encoder (ensuring that for every tooth pitch moved by the concentricity detection structure 203, the angle deviation detection gear 204 rotates exactly one tooth angle, and...). The central shaft of the angle deviation detection gear 204 integrates a miniature angle signal acquisition unit (such as a small photoelectric encoder or Hall effect position sensor, connected to the main controller 700). This unit can capture the rotation angle of the angle deviation detection gear 204 in real time. When the piezoelectric ceramic actuator 202 fine-tunes the position of the external permanent magnet rotor 201, the angle deviation detection gear 204 will rotate synchronously with the displacement of the concentricity detection structure 203. Its rotation angle directly reflects the position deviation of the external permanent magnet rotor 201. The angle deviation detection gear 204 feeds back this deviation signal to the main controller 700. The main controller 700 determines whether further fine-tuning is needed based on the feedback signal. Finally, until the deviation fed back by the angle deviation detection gear 204 is less than a preset threshold, the main controller 700 determines that the external permanent magnet rotor 201 and the internal permanent magnet rotor 206 have been accurately aligned again. At this time, the piezoelectric ceramic actuator 202 stops operating, the magnetic coupling returns to a high-efficiency transmission state, and the alarm is automatically deactivated.

[0023] Further, based on the above scheme, the detailed operation of the drive adjustment component 800 is as follows: Specifically, according to... Figures 2-4As shown, the drive adjustment assembly 800 is used to drive the tap changer drive disk 208 in different positions. The drive adjustment assembly 800 includes a worm 803 and a worm wheel 806, which mesh with each other. A first electromagnetic stopper 807 is installed at the center end of the worm wheel 806, and a drive shaft is installed at the center end of the first electromagnetic stopper 807. The drive shaft is connected to the tap changer drive disk 208. The drive adjustment assembly 800 further includes a drive belt 802, which can drive the worm 803 to rotate along its own axis by the drive of the standby motor 801. An adjustment belt 804 is installed on the outside of the side end of the worm 803. A second electromagnetic stopper is installed at the connection end of the adjustment belt 804 and the drive belt 802 with the worm 803. A first drive connecting rod 805 is connected to the side end of the adjustment belt 804, and a drive gear 810 is installed on the other side end of the worm 803. An inner rotating gear ring 808 is meshed with the side of the drive gear 810. A third electromagnetic stopper is installed at the connection end of the drive gear 810 and the inner rotating gear ring 808. A connecting and limiting rotating groove disc 809 is rotatably connected to the outside of the inner rotating gear ring 808. A second drive connecting rod is connected to the center end of the inner rotating gear ring 808 through the surface of the sealing housing 100. Under the operating conditions of the magnetic coupling drive assembly 200: On the one hand, when the voltage regulator completes basic voltage regulation through the main drive (magnetic coupling drive component 200), but there is a slight gear deviation in the tap changer drive disk 208 (such as feedback deviation from the angle sensor 205), or the drive orientation needs to be adjusted to adapt to the internal winding layout of the voltage regulator, the drive adjustment component 800 is activated.

[0024] First, the main controller 700 receives a gear deviation signal from the angle sensor 205 (e.g., the current gear of the tap changer drive disc 208 is deviated to the right or left compared to the preset gear), or receives a position adjustment command from the overall control of the voltage regulator (e.g., to switch the driving direction of the tap changer drive disc 208 from clockwise fine-tuning to radial compensation). Then, the main controller 700 automatically plans the power transmission path according to the requirement. If it is a gear fine-tuning, the adjusting belt 804 drives the worm gear 803; if it is a position switching, the drive gear 810 drives the inner rotating gear ring 808. Simultaneously, it determines which electromagnetic interruptors need to be turned on / off (to avoid interference with...). (Interference in the main drive power path). Secondly, the main controller 700 sends an action command to the corresponding electromagnetic stopper. If the adjusting belt 804 drives the worm 803, the second electromagnetic stopper at the connection end of the adjusting belt 804 and the worm 803 is turned on (generating electromagnetic attraction, making the adjusting belt 804 and the journal of the worm 803 fit tightly together, enabling power transmission). At the same time, the second electromagnetic stopper at the connection end of the drive belt 802 and the worm 803 is turned off (releasing the fit state, cutting off the power path of the backup motor 801), and the first electromagnetic stopper 807 is controlled to be in a semi-conducting state (only allowing a small torque to be transmitted, avoiding affecting the stable operation of the main drive). If the drive gear 810 drives the inner gear ring 808, the third electromagnetic stopper at the connection end between the drive gear 810 and the inner gear ring 808 is turned on (making the gear and gear ring mesh tightly), while the second electromagnetic stopper of the adjusting belt 804 and the drive belt 802 remains off. After the power transmission and tap changer drive disc 208 are adjusted, the corresponding power path begins to transmit power. If it is a gear fine adjustment, the first drive connecting rod 805 (externally connected to a fine adjustment drive source, such as a micro stepper motor) drives the adjusting belt 804 to rotate. The adjusting belt 804 drives the worm 803 to rotate slowly along its own axis through friction (the speed is much lower than the main drive speed). At this time, the worm 803 meshes with the worm wheel 806, driving the worm wheel 806 to rotate synchronously. Since the first electromagnetic stopper 807 is in a semi-conducting state, the worm wheel 806 transmits a small torque through the drive axis tap changer drive disc 208 to realize the gear fine adjustment of the drive disc (such as correcting from the right to the left). (Preset gear), and if it is a position switch, the second drive connecting rod (external position drive source, such as servo motor) drives the inner rotating gear ring 808 to rotate around the limiting rotating groove disk 809 (the limiting rotating groove disk 809 limits the radial offset of the inner rotating gear ring 808 to ensure meshing accuracy). At this time, the inner rotating gear ring 808 meshes with the drive gear 810, drives the drive gear 810 to rotate, and then drives the worm gear 803 to finely adjust the angle. The worm gear 803 transmits radial compensation power through the worm wheel 806 and the drive axis tap switch drive disk 208 to complete the drive position switch. Next, the angle sensor 205 monitors the adjustment status of the tap changer drive disk 208 in real time. When the feedback gear deviation or orientation meets the preset requirements, it sends an adjustment in place signal to the main controller 700. The main controller 700 immediately controls the corresponding electromagnetic blocker to reset, cutting off the power path of the adjustment belt 804 or the drive gear 810 (the second electromagnetic blocker / third electromagnetic blocker is disconnected). The first electromagnetic blocker 807 returns to the standby state (fully conducting only when the main drive fails). The auxiliary adjustment process ends, and the component returns to the standby state.

[0025] On the other hand, when the main drive motor fails (such as the external permanent magnet rotor 201 of the magnetic coupling drive assembly 200 stops rotating), or the magnetic coupling alignment is abnormal and cannot be repaired, the drive adjustment assembly 800 is activated to ensure the continuous operation of the tap changer drive disk 208. That is, firstly, when the main controller 700 detects no gear change through the angle sensor 205 for a period of time, the main drive motor current is 0, or the Hall sensor array 207 feedback magnetic field has no coupling signal, the magnetic coupling drive assembly 200 is determined to be faulty through these signals. Then, the main controller 700 immediately sends a backup drive start command to the wireless drive terminal 300 through the second wireless communication module. The wireless energy transmission module of the wireless drive terminal 300 enhances the energy output and supplies power to the backup drive terminal 600 inside the sealed housing 100 through electromagnetic induction / magnetic resonance (magnetic resonance coupling). The rectifier and voltage regulator circuit of the backup drive terminal 600 converts the received energy into the working voltage of the backup motor 801 and starts the backup motor 801. Next, the main controller 700 controls the switching of the electromagnetic interruptors of the drive adjustment assembly 800, so that the second electromagnetic interruptor at the connection end between the drive belt 802 and the worm 803 is fully connected (ensuring that the power of the standby motor 801 can be efficiently transmitted to the worm 803), and the first electromagnetic interruptor 807 is fully connected (making the worm wheel 806 rigidly connected to the drive shaft, and transmitting power without loss), while the second electromagnetic interruptor of the adjustment belt 804 and the third electromagnetic interruptor of the drive gear 810 are disconnected (cutting off unnecessary paths and avoiding power dispersion). At the same time, the main controller 700 sends a main drive path blocking signal to the magnetic coupling drive assembly 200 (such as controlling the piezoelectric ceramic actuator 202 to lock the external permanent magnet rotor 201, preventing it from being passively rotated with the standby drive).Subsequently, the output shaft of the standby motor 801 drives the drive belt 802 to rotate. The drive belt 802 drives the worm 803 to rotate stably along its own axis through friction. The worm 803 meshes with the worm wheel 806, converting horizontal power into vertical power, which drives the worm wheel 806 to rotate. The worm wheel 806 transmits power to the drive shaft through the fully conductive first electromagnetic stopper 807. The drive shaft drives the tap changer drive disk 208 to rotate, realizing the switching of the tap changer and completing the pressure regulation operation. If the drive position needs to be adjusted during the pressure regulation process (such as the tap changers being distributed in different quadrants of the tap changer drive disk 208), the main controller 700 can temporarily activate the third electromagnetic stopper, causing the drive gear 810 to engage with the inner rotating gear ring 806. 08 engages, and the second drive connecting rod supplements the drive to achieve multi-directional coverage voltage regulation. After the main drive (magnetic coupling drive component 200) is repaired (such as the main drive motor restarts or the magnetic coupling is restored), the main controller 700 receives the main drive recovery signal and gradually reduces the speed of the backup motor 801. At the same time, it controls the first electromagnetic blocker 807 to switch from fully conducting to standby state, and the second electromagnetic blocker of the drive belt 802 is disconnected. After the main drive (magnetic coupling drive component 200) drives the tap changer drive disk 208 to run again, the backup motor 801 stops working, the wireless drive terminal 300 resumes low power supply mode, and the drive adjustment component 800 returns to the standby state.

[0026] The preferred approach is based on the above schemes, specifically, according to... Figures 1-3As shown, the wireless drive assembly includes a wireless drive terminal 300 (the wireless drive terminal 300 has a compact rectangular box structure and is installed in a convenient access position outside the sealed housing 100 (such as a magnetic bracket on the side of the housing), and is made of ABS engineering plastic with electromagnetic interference resistance (with an electromagnetic shielding coating on the surface) to avoid the influence of external magnetic fields) and a backup drive terminal 600 installed inside the sealed housing 100. The wireless drive terminal 300 has a built-in wireless energy transmitting module and a first wireless communication module. The backup drive terminal 600 includes a wireless energy receiving module, a backup motor 801, and a rectifier and voltage regulator circuit for powering the backup motor 801. The main controller 700 is installed inside the sealed housing 100, electrically connected to the sensing unit and the backup motor 801, and has a second wireless communication module for data interaction with the wireless drive terminal 300. An emergency magnetic drive head is installed at the bottom of the wireless drive terminal 300 (the emergency magnetic drive head uses neodymium iron boron permanent magnets, and its shape is designed as an arc-shaped protrusion structure adapted to the tap changer drive disk 208 to ensure a stable magnetic coupling surface when in contact with the tap changer drive disk 208. The bottom of the wireless drive terminal 300 also has a positioning protrusion that precisely matches the emergency drive marking area on the sealed housing 100 to avoid coupling failure due to misalignment during placement). The sealed housing 100 has an emergency drive marking area corresponding to the emergency magnetic drive head. The wireless drive terminal 300 can be selectively placed in the emergency drive position, and magnetic coupling is formed between the emergency magnetic drive head and the tap changer drive disk 208 to directly drive the tap changer. The wireless energy transmitting module and the wireless energy receiving module achieve energy transmission through electromagnetic induction or magnetic resonance. A buffer structure 500 is installed at the bottom of the sealed housing 100, and a mounting slot 400 is installed on the top of the buffer structure 500.When the backup motor 801 fails to start due to stalling, coil burnout, or other reasons (the main controller 700 detects that the motor current is 0 or exceeds the rated value), it is triggered by the emergency magnetic drive head of the wireless drive terminal 300. This causes the main controller 700 to send an emergency drive trigger command to the wireless drive terminal 300, and the terminal's audible and visual alarm lights begin to flash (red light and buzzer). At the same time, the emergency drive marking area (printed with fluorescent material) on the sealed housing 100 lights up, guiding maintenance personnel to quickly locate the emergency operation position. Then, the maintenance personnel remove the wireless drive terminal 300 and, according to the positioning groove in the marking area (which matches the positioning protrusion on the bottom of the wireless drive terminal 300), accurately place the wireless drive terminal 300 in the emergency drive position. At this time, the emergency magnetic drive head on the bottom of the wireless drive terminal 300 connects with the tap inside the sealed housing 100. The switch drive disk 208 forms a stable magnetic coupling (ensuring no relative slippage). After the emergency magnetic coupling is formed, maintenance personnel can control the rotation direction and speed of the emergency magnetic drive head through the manual adjustment knob on the side of the wireless drive terminal 300 (or the touch screen built into the wireless drive terminal 300). For example, when the knob is rotated clockwise, the emergency magnetic drive head drives the tap changer drive disk 208 to rotate clockwise through magnetic force, realizing tap switching. During the adjustment process, the main controller 700 provides real-time feedback of the gear position information through the angle sensor 205. The maintenance personnel adjust the drive speed according to the feedback until the voltage regulation operation is completed. After the drive is completed, the wireless drive terminal 300 is removed and put back in its original position, so that the wireless drive terminal 300 automatically resets to the standby state. The mounting slot 400 and the buffer structure 500 are existing technologies and will not be described in detail.

[0027] The wiring diagrams for the angle sensor 205, temperature sensor, wireless energy transmitting module, first wireless communication module, wireless energy receiving module, second wireless communication module, vibration sensor 209, Hall sensor array 207, and piezoelectric ceramic actuator 202 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring arrangements for the angle sensor 205, temperature sensor, wireless energy transmitting module, first wireless communication module, wireless energy receiving module, second wireless communication module, vibration sensor 209, Hall sensor array 207, and piezoelectric ceramic actuator 202 will not be explained in detail.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick tap changer for a voltage regulator, characterized in that, include: A sealed housing (100) serves as a sealed protective housing for the entire device; A magnetic coupling drive assembly (200) includes an internal permanent magnet rotor (206) and a tap changer drive disk (208). The internal permanent magnet rotor (206) is installed inside a sealed housing (100) and fixedly connected to the tap changer drive disk (208). An external permanent magnet rotor (201) is located outside the sealed housing (100) and connected to a main drive motor. The internal permanent magnet rotor (206) and the external permanent magnet rotor (201) are magnetically coupled in a non-contact manner. A sensing unit is installed outside the tap changer drive disk (208). The sensing unit includes an angle sensor (205) for monitoring tap changer position information and a temperature sensor for monitoring temperature rise information. The wireless drive assembly includes a wireless drive terminal (300) installed outside a sealed housing (100) and a backup drive terminal (600) installed inside the sealed housing (100). The wireless drive terminal (300) has a built-in wireless energy transmitting module and a first wireless communication module. The backup drive terminal (600) includes a wireless energy receiving module, a backup motor (801), and a rectifier and voltage regulator circuit for supplying power to the backup motor (801). A drive adjustment assembly (800) is used to drive the tap changer drive disk (208) in different positions. The drive adjustment assembly (800) includes a worm (803) and a worm wheel (806). The worm (803) and the worm wheel (806) mesh with each other. A first electromagnetic blocker (807) is installed at the center end of the worm wheel (806). A drive shaft is installed at the center end of the first electromagnetic blocker (807). The drive shaft is connected to the tap changer drive disk (208). The main controller (700) is installed inside the sealed housing (100), electrically connected to the sensing unit and the backup motor (801), and is equipped with a second wireless communication module for data interaction with the wireless drive terminal (300).

2. The quick tap changer for a voltage regulator according to claim 1, characterized in that: The sensing unit also includes a vibration sensor (209) for monitoring the operating vibration spectrum of the magnetic coupling drive assembly (200). The main controller (700) further has the function of continuously collecting and storing the timing data of the angle sensor (205), temperature sensor, vibration sensor (209) and the current data of the main drive motor, and uploading the data to the cloud server through the second wireless communication module. Based on the health model established by the cloud server, the real-time data is analyzed, and when the data deviates from the health model, the remaining service life prediction and fault warning information for the magnetic coupling drive assembly (200) are generated.

3. The quick tap changer for a voltage regulator according to claim 1, characterized in that: The sensing unit further includes a Hall sensor array (207) arranged in a ring around the internal permanent magnet rotor (206) for real-time monitoring of the magnetic field distribution intensity and uniformity of the internal permanent magnet rotor (206). The main controller (700) is used to receive the signal from the Hall sensor array (207) and generate an alarm for moderate abnormality of magnetic coupling when the magnetic field distribution is determined to be abnormal.

4. The quick tap changer for a voltage regulator according to claim 1, characterized in that: The magnetic coupling drive assembly (200) also includes a piezoelectric ceramic actuator (202) mounted on the mounting base of the external permanent magnet rotor (201). After generating a centering abnormality alarm, the main controller (700) controls the piezoelectric ceramic actuator (202) to move, so as to finely adjust the position of the external permanent magnet rotor (201) and make it accurately aligned with the internal permanent magnet rotor (206). A concentricity detection structure (203) is installed at the bottom of the piezoelectric ceramic actuator (202). An angular tooth groove is opened on the bottom surface of the concentricity detection structure (203). An angular deviation detection gear (204) is meshed inside the angular tooth groove.

5. The quick tap changer for a voltage regulator according to claim 1, characterized in that: An emergency magnetic drive head is installed at the bottom of the wireless drive terminal (300), and an emergency drive marking area corresponding to the emergency magnetic drive head is provided on the sealed housing (100). The wireless drive terminal (300) can be selectively placed in the emergency drive position, and the emergency magnetic drive head forms a magnetic coupling with the tap changer drive disk (208) to directly drive the tap changer.

6. The quick tap changer for a voltage regulator according to claim 1, characterized in that: The drive adjustment assembly (800) further includes a drive belt (802), which can drive the worm (803) to rotate along its own axis by the drive of the backup motor (801). An adjustment belt (804) is installed on the outside of the side end of the worm (803). A second electromagnetic stopper is installed at the connection end of the adjustment belt (804) and the drive belt (802) with the worm (803).

7. The quick tap changer for a voltage regulator according to claim 6, characterized in that: The side end of the adjusting belt (804) is connected to a first driving connecting rod (805), and the other side end of the worm (803) is equipped with a driving gear (810). The side of the driving gear (810) is meshed with an inner rotating gear ring (808).

8. The quick tap changer for a voltage regulator according to claim 7, characterized in that: A third electromagnetic stopper is installed at the connection end of the drive gear (810) and the inner rotating gear ring (808). The inner rotating gear ring (808) is rotatably connected to a connecting and limiting rotating groove disk (809). The center end of the inner rotating gear ring (808) penetrates the surface of the sealing shell (100) and is connected to a second drive connecting rod.

9. The quick tap changer for a voltage regulator according to claim 8, characterized in that: The wireless energy transmitting module and the wireless energy receiving module achieve energy transmission through electromagnetic induction or magnetic resonance.

10. The quick tap changer for a voltage regulator according to claim 1, characterized in that: The bottom of the sealed housing (100) is provided with a buffer structure (500), and the top of the buffer structure (500) is provided with a mounting slot (400).

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