517 results about "Magnetic levitation" patented technology

The invention discloses a half-open type thrust magnetic levitation bearing. The bearing comprises a first magnetic ring, a second magnetic ring and a third magnetic ring, wherein the first magnetic ring, the second magnetic ring and the third magnetic ring are arranged in annular and laminating manners so as to form an annular magnetic pole; the magnetic pole of each of the magnetic rings is different from that of the adjacent magnetic ring; a first winding and a second winding of the annular magnetic pole are wound according to a predetermined half-open way, the lower part of the middle magnetic pole is recessed inwards so as to generate a winding space which meets predetermined conditions; and the magnetic pole arranged at the upper end extends, and thus, a complete circle of magnetic pole is formed after splicing. Based on the bearing, continuity and consistency of magnetic field strength of the magnetic poles of the half-opened axial thrust bearing can be basically reserved, and the half-open type thrust magnetic levitation bearing can be applied to high-speed rotation machines; and moreover, a more flexible mounting way can be obtained, particularly to large-size rotation machines.

The invention relates to an assembly comprising a blade holder cartridge (15); a shaving head (1), equipped with a magnetic suspension consisting of pairs of magnets (2, 4) and (5, 3) in an attractive position; and a handle (16) assembled to said head by means of a joint composed of a cup (20) and a ball joint (25) having pairs of connecting magnets (21, 22) and (23, 24) in a repulsive position. Shaving is performed using shaving blades (13, 14), positioned in the blade holder cartridge (15), which bear against the magnets (4, 5) that exert pressure on them to ensure a comfortable shave. This pressure can be adjusted using the dials (8, 9) associated with the screw rods (6, 7).

The application discloses a kind of magnetic suspension ORC units and control method, it is related to low-temperature waste heat power generation technical field;The unit includes magnetic suspension motor, turbine, evaporator, preheater, condenser, liquid storage tank, working medium pump and control system;Magnetic suspension motor is coaxial direct connection with turbine, and constitutes oil-free integrated closed structure;Control system includes PLC controller, four-quadrant frequency converter, turbine inlet regulating valve, hot gas bypass valve and sensor assembly;PLC controller inside preset turbine performance curve and working medium property model, configured to: real-time calculation turbine import and export pressure ratio, query performance curve to determine the best speed target value, through adjusting turbine inlet regulating valve control magnetic suspension motor speed track the target value.The application solves the problems of large mechanical friction loss, high maintenance cost and low variable condition efficiency of existing ORC unit, and realizes efficient and stable operation of the unit under wide operating conditions through collaborative control strategy.

This invention discloses a magnetically levitated grain vibrating screen, belonging to the field of grain impurity removal technology. It includes a base with a magnetic coupling module; a screen body mounted above the base, with a permanent magnet array corresponding to the magnetic coupling module at its bottom; the magnetic coupling module includes a drive assembly mounted on the base, comprising multiple independent drive coils, each connected to an independently adjustable AC power supply; the AC power supply generates a changing driving magnetic field by inputting AC current of a preset frequency and phase to the corresponding drive coil, and the driving magnetic field couples with the permanent magnet array, driving the screen body to perform multi-degree-of-freedom force-driven motion. The screen body of this invention can perform multi-degree-of-freedom force-driven motion, realizing reciprocating swing motion, and improving the screening efficiency for fine impurities in grain.

The utility model discloses a kind of magnetic suspension porous rotor and magnetic suspension rotary table, magnetic suspension porous rotor includes annular rotor main body, annular support wall formed in one end of annular rotor main body and at least one annular flange formed by extending along the radial direction of annular rotor main body outward, annular support wall is formed with at least two groups of through holes arranged along the axial direction, each group of through holes includes multiple through holes through along the radial direction and same in axial height, multiple through holes are uniformly arranged along the circumferential direction. Under the condition that the total area of the through hole formed on the annular support wall is the same, one layer of through hole is provided, the size of the through hole is relatively large, while two or more layers of through hole are provided, the size of the through hole is relatively small, the alternating change of the through hole and the connecting wall is more evenly distributed on the entire circumference, the utility model is more conducive to the uniformity of temperature distribution, and is also conducive to the overall strength.

This application relates to a magnetic suspension bearing control system, a control method and refrigeration equipment. The magnetic suspension bearing control system includes: a magnetic suspension bearing control module configured to control a magnetic suspension bearing; a battery management module electrically connected to the magnetic suspension bearing control module; and a master control module connected to the magnetic suspension bearing control module and the battery management module, and configured to control the battery management module to store electric energy when a voltage of the magnetic suspension bearing control module is excessive, and supply power to the magnetic suspension bearing control module when the magnetic suspension bearing control module is underpowered.

The application provides a comprehensive environment simulation test system for rotating parts, comprising a vacuum cabin, a high-low temperature test subsystem arranged in the vacuum cabin and provided with a first temperature control assembly for cooling the vacuum cabin and a second temperature control assembly for heating the vacuum cabin, a high vacuum obtaining subsystem connected with the vacuum cabin for adjusting the vacuum degree of the vacuum cabin, a micro-gravity simulation subsystem arranged in the vacuum cabin and provided with a magnetic suspension bearing connected with the rotating part to be tested, a dynamic torque test subsystem provided with a driving motor, a magnetic powder brake and at least one shaft coupling, the driving motor and the magnetic powder brake being connected with the rotating part to be tested in the vacuum cabin through the shaft coupling and at least one magnetic fluid dynamic sealing device, and a dynamic parameter measurement subsystem arranged in the vacuum cabin and provided with at least one measurement unit for obtaining the dynamic parameters of the rotating part to be tested. Therefore, the application can improve the effectiveness of the space environment simulation test of the rotating part.

This invention relates to the field of high-speed magnetic levitation transportation technology and discloses a test device for a ground module of a magnetic levitation electromagnetic propulsion system. The device includes a superconducting magnet, a ground test bench, a frequency converter, a through-core transformer, a high-voltage generator, connecting leads, dry-type terminals, and two power supply cables for the tested module. The tested ground module and the superconducting magnet are arranged opposite each other on the ground test bench. One end of the power supply cable for the tested module is equipped with a dry-type terminal, and the other end is connected to the lead-out end of the propulsion coil of the tested ground module. The dry-type terminal of one power supply cable passes through the through-core transformer and is connected to the dry-type terminal of the other power supply cable through a connector to form a conductive loop. The connection point of the dry-type terminal is connected to the high-voltage generator through connecting leads. The frequency converter is connected to one vertical side of the through-core transformer. The shielding shell of the tested ground module and the shielding layer of the tested power supply cables are grounded. This allows for multi-field coupling durability testing.

This disclosure provides a wind turbine generator system, including a base, a column, a rotor assembly, a blade assembly, a stator assembly, and an energy storage component; the column is vertically mounted on the base; the rotor assembly includes multiple spaced-apart segmented rotors, with an axial clearance between adjacent segmented rotors of [value missing]. λ1 The wind turbine assembly includes at least one blade; the stator assembly includes multiple segmented stators spaced apart on the column, with an axial clearance of λ2 between adjacent segmented rotors; a coil winding connected to the energy storage component is provided on one of the stator assembly and the rotor assembly; the stator assembly and the rotor assembly are nested together, with a radial clearance δ between the segmented stators and segmented rotors in the radial direction of the column, 0 < δ ≤ λ1 ， And δ≤ λ2 ； The segmented stator and segmented rotor are radially opposite each other on the column and have magnetic attraction between them. The axial component of the magnetic attraction is balanced by the sum of the weights of the fan blades and the rotor assembly. This scheme can improve the axial magnetic levitation stiffness to reduce the possibility of system damage.

The utility model discloses a kind of magnetic levitation laminating equipment, including the pole piece unwinding module for unwinding first pole piece material tape and second pole piece material tape, the die cutting module for the die cutting of the first pole piece material tape and the second pole piece material tape into first pole piece and second pole piece, the pole piece conveying module for conveying the first pole piece and the second pole piece, diaphragm unwinding module, magnetic levitation module, laminating table module, and laminating blanking module, magnetic levitation module includes the magnetic levitation clamp that runs along its annular magnetic levitation track, the magnetic levitation clamp obtains and clamps the diaphragm fixed in first preset position, the magnetic levitation clamp obtains and clamps the first pole piece and the second pole piece in second preset position, and the diaphragm is located between the first pole piece with the second pole piece to form pole piece laminated layer. In the magnetic levitation laminating equipment of the utility model, the conveying mode of laminating is relatively more simple, shortens the process of Z-shaped laminating technology, improves laminating efficiency.

The application provides an air-cooled magnetic suspension dual-working-condition water chiller and a control method, and belongs to the technical field of water chillers. The air-cooled magnetic suspension dual-working-condition water chiller comprises three components, i.e., a refrigeration cycle, a dual-working-condition water supply and a flow regulation. The refrigeration cycle component is composed of a magnetic suspension compressor, an evaporator and an expansion valve. The magnetic suspension compressor is a variable frequency high-speed structure without an oil lubrication circuit. The magnetic suspension compressor is matched with an air-cooled condenser and a condensing fan to complete refrigerant circulation heat exchange. The expansion valve realizes refrigerant throttling and pressure reduction. The dual-working-condition water supply component is connected with two paths at the water outlet end of the evaporator. One path is directly connected with a low-temperature cooling combined air conditioning unit, and the other path is connected with a high-temperature cooling equipment after secondary heat exchange through a plate heat exchanger. Single system realizes dual-temperature water supply. The flow regulation component is provided with adjustable opening degree water supply and return water electric proportional valves in the plate heat exchanger pipeline to regulate and control waterway on-off and flow. The structure of the multi-temperature water supply system is simplified, the operation regulation flexibility is improved, and the energy consumption and operation and maintenance difficulty are reduced.

The application provides a magnetic suspension motor assembly error automatic detection system and particularly relates to the technical field of detection equipment, which comprises a plurality of test circuits and a single-chip microcomputer controller, wherein the test circuit comprises a relay, the test circuit is used for controlling the attraction of the magnetic bearing in a certain direction, the single-chip microcomputer controller is used for controlling a plurality of relays and realizing the multi-directional attraction of the magnetic bearing, the single-chip microcomputer controller controls the relays to realize the multi-directional attraction of the rotor of the magnetic bearing according to a test program, and the corresponding magnetic suspension motor is marked when the magnetic bearing and the rotor are scratched or stuck, the single-chip microcomputer controller is combined with the relays, the combination control of the attraction direction of the magnetic bearing is realized, the method of controlling the magnetic bearing by using the magnetic bearing controller is replaced, and the test efficiency and test flexibility are higher.

This utility model belongs to the field of refrigeration technology, and specifically relates to a refrigeration device for a magnetic levitation compressor bearing, applicable to compressors with magnetic levitation bearings. The bearing refrigeration device includes an assembly cover, a radiator, a circulating pump, and a positioning assembly. The assembly cover is fixedly installed on the outer wall of the compressor housing, the circulating pump is fixed inside the assembly cover, and the radiator is fixed on the outside of the assembly cover and connected to the circulating pump. Positioning assemblies are connected to both ends of the stationary component of the magnetic levitation bearing, and the positioning assemblies are fixedly installed inside the housing. The follower component of the magnetic levitation bearing is installed around the rotor. The magnetic levitation bearing, positioning assembly, and rotor components form a refrigeration cavity. The positioning assembly consists of an outer ring seat and an inner ring seat. Outer ring grooves and inner ring grooves are respectively formed on the inner wall of the outer ring seat and the outer wall of the inner ring seat, which combine to form an annular passage. This utility model effectively reduces the temperature rise of the magnetic levitation bearing during operation and solves the overheating problem by optimizing the cooling path and heat dissipation design.

The application provides a turnout beam, which comprises a plurality of beam body units connected in sequence, the beam body unit comprises a box beam, an inner lateral transverse rib plate and a side edge assembly, a plurality of inner lateral transverse rib plates and a plurality of side edge assemblies are arranged on both sides of the box beam along the length direction at intervals, and the inner lateral transverse rib plates and the side edge assemblies on both sides of the box beam are symmetrically arranged; the length direction of the side edge assembly is parallel to the length direction of the box beam, a single side edge assembly is connected with a plurality of inner lateral transverse rib plates corresponding to the single side edge assembly, and the upper top surface of the side edge assembly is flush with the upper top surface of the box beam. The structural form of the turnout beam of the application can effectively reduce the driving force required when the line type is switched, compared with the existing turnout beam. The application further provides a high-speed magnetic levitation turnout and a switching control method thereof, the switching time is less than or equal to 24s, the lateral line type precision error is within 2mm per full line length, the line type fitting precision is not less than the existing eight-car arrangement scheme, and the driving force is much smaller than the three-car arrangement scheme.

In an axial direction (A1) of a rotor (3), a first tooth position (220) is defined as the position of a first tooth set (222) of a stator (2), and a second tooth position (230) is defined as the position of a second tooth set (232). A first magnetization part position is defined as the position of a first magnetization part (32) of the rotor, at which a first magnetic flux flowing from at least one of the first magnetization part and a second magnetization part (33) of the rotor and interlinking with a virtual winding of the first tooth set (222) takes a local maximum value or a local minimum value. A second magnetization part position (330) is defined as the position of the second magnetization part, at which a second magnetic flux flowing from at least one of the first magnetization part and the second magnetization part and interlinking with a virtual winding of the second tooth set takes a local maximum value or a local minimum value. When the first magnetization part position is at the same position as the first tooth position in a state where the position of the rotor in the axial direction is controlled, the second magnetization part position is not at the same position as the second tooth position.

This invention discloses an electropolishing apparatus and method based on magnetic levitation. The electropolishing apparatus includes an electrolytic cell; it also includes a pair of magnetic plates I disposed along the axial direction of the electrolytic cell to generate magnetic levitation force, and a pair of magnetic plates II disposed on opposite sides of the electrolytic cell in the horizontal direction. The pair of magnetic plates II rotates relative to the electrolytic cell under the drive of a driving device. The outer diameter of the pair of magnetic plates II is not less than the width of the corresponding side of the electrolytic cell, and the highest point of the pair of magnetic plates II is lower than the height of the cathode plate in the electrolytic cell. The method of this invention can achieve 360° polishing of the workpiece. It uses a magnetic field to suspend the workpiece in the electrolyte and induces a current through a rotating magnetic system, thereby achieving electropolishing of the workpiece without clamping. This method can achieve one-time overall polishing of workpieces of various shapes and masses, greatly improving polishing efficiency. This method avoids damage to the surface of irregularly shaped parts by clamping devices, improving polishing quality and surface consistency.

This invention discloses a control system, method, and storage medium for a vehicle and its magnetic levitation chassis. The system includes: a global perception module for acquiring global perception data of the vehicle, which represents data obtained after multimodal fusion of perception data from multiple dimensions of the vehicle; a state acquisition module for acquiring the vehicle's driving state; a controller connected to the global perception module and the state acquisition module, used to construct initial control signals for at least one magnetic levitation actuator based on the global perception data, and adjust the initial control signals based on the driving state to obtain a target control signal; and at least one magnetic levitation actuator connected to the controller for executing control actions based on the target control signal to adjust the posture of the vehicle's magnetic levitation chassis. This invention solves the technical problem of poor control accuracy for magnetic levitation chassis in related technologies.

The present application relates to the technical field of intelligent operation and maintenance of maglev track, and particularly discloses a maglev maintenance base steel beam connecting bolt health monitoring system, which specifically comprises a data acquisition module, a data processing module, a failure diagnosis module and a cloud service platform. The present application sets strain gauges on bolt heads for monitoring, does not need to disassemble or damage the bolts, can monitor the stress of the bolts in service state without affecting the structural integrity, reduces the risk and cost in the monitoring process, in addition, monitors the vibration characteristics of the steel beam, indirectly obtains information about whether the bolt connection is normal, finally, adopts image recognition technology to monitor the bolt loosening in real time, the fusion of the above three technologies of direct stress, indirect representation and image monitoring, superimposed with maglev vehicle operation condition data, can provide comprehensive structural health monitoring information, which is helpful for comprehensively evaluating the overall performance and safety of the connecting bolts and real-time early warning.

The application provides a magnetic suspension mixed three-degree-of-freedom bearing and an air compressor, wherein the bearing comprises a radial magnetic bearing assembly and an axial magnetic bearing assembly, a permanent magnet capable of providing a bias magnetic field is clamped between the radial magnetic bearing assembly and the axial magnetic bearing assembly, the axial magnetic bearing assembly comprises a first axial stator core and a second axial stator core, the first axial stator core has a first magnetic ring, the radial thickness of the first magnetic ring is la, the second axial stator core has a second magnetic ring, the radial thickness of the second magnetic ring is le, and la < le. The application increases the radial thickness of the side with smaller axial output, thereby improving the axial output of the second axial stator core, making the structures of the first axial stator core and the second axial stator core asymmetric, achieving axial force balance design without increasing the overall volume of the bearing, meeting the axial load demand, and thereby improving the rotor dynamics characteristics.

This invention relates to a wind-powered combined heat and power (CHP) unit based on magnetic levitation technology and its control method. A wind-powered CHP unit may include: a hub on which blades are mounted; a main shaft connected to the hub and supported by a main shaft bearing; a gearbox including a low-speed shaft and a high-speed shaft, the low-speed shaft being connected to the main shaft; a generator, one end of the generator's rotor being connected to the high-speed shaft of the gearbox via a first electromagnetic clutch; and a compressor, the compressor's drive shaft being connected to the other end of the generator's rotor via a second electromagnetic clutch.

This invention discloses a method and system for coating medical tubing based on active magnetic levitation control. The method dynamically suspends the coating mold using magnetic force and utilizes closed-loop control to adjust the magnetic force in real time, enabling the mold to automatically track and align with the enameled wire. The system includes a mechanically disconnected coating mold, a magnetic actuator, a position sensor, and a controller. This invention achieves a completely non-contact coating process, fundamentally solving problems such as wear, misalignment, and vibration transmission caused by mechanical contact in traditional technologies, significantly improving the coating uniformity, surface quality, and production efficiency of medical tubing.

This invention discloses a magnetically decoupled permanent magnet motor with axial active and radial passive levitation, belonging to the field of magnetic levitation motor technology. The magnetic levitation motor includes an axial stator disk assembly, an axial stator sleeve, and a motor unit. The motor unit has a radial air gap, and an axial air gap exists between the motor unit and the axial stator sleeve. The axial air gap contains axial bias flux and axial control flux, while the radial air gap contains torque flux. The rotor's axial translational degree of freedom is actively controlled, while the four radial degrees of freedom are passively stabilized. The axial levitation force and torque are naturally decoupled and independently controlled. The rotor in the motor unit of this invention adopts a "V"-shaped alternating pole structure with built-in permanent magnets, and the rotor core has air magnetic barriers, which improves the utilization rate of permanent magnet materials and the motor's torque output capability, while reducing costs.

The application discloses a kind of no thrust disc permanent magnet bias axial magnetic suspension bearing, including stator ring core, control winding, first permanent magnet, second permanent magnet and rotor core;First permanent magnet and second permanent magnet are respectively fixed on the left and right side ring surface of stator ring core;Control winding is installed on the center ring hole of stator ring core;Rotor core transversely penetrates the center ring hole of stator ring core, and first air gap ring groove and second air gap ring groove are spaced apart on the outer wall in the middle of rotor core, to form first axial air gap and second axial air gap.The no thrust disc permanent magnet bias axial magnetic suspension bearing adopts the design of no thrust disc permanent magnet bias axial magnetic suspension bearing, compared with existing permanent magnet bias axial magnetic suspension bearing, there is no large-diameter axial thrust disc, the centrifugal force borne by rotor core is reduced, not easy to damage, improve the dynamics stability of rotor core, and then promote the upper limit of rotational speed.

The utility model relates to centrifugal fan technical field especially a kind of centrifugal fan of contactless drive, including cabinet shell and internal fan, the internal fan includes fan blade, rotating shaft and magnetic suspension motor, cabinet shell both sides are equipped with quick-release door, the quick-release door is set as flip cover, the quick-release door is set in cabinet shell both sides by rotating hinge, cabinet shell inside is equipped with vertical support plate;The vertical support plate bottom is equipped with sliding block;The cabinet shell bottom is equipped with mounting plate, the mounting plate top surface is equipped with sliding slot, the sliding block is slidably arranged in sliding slot, the vertical support plate center is equipped with mounting hole, the internal fan is installed on vertical support plate by mounting hole, the rotating shaft is rotatably arranged in mounting hole, the fan blade is fixedly arranged at the front end of rotating shaft, the rotating shaft tail end is connected with magnetic suspension motor, without the whole dismounting external cabinet shell, it is convenient to maintain internal fan at any time.

The application discloses a three-winding three-phase variable-speed magnetic suspension asynchronous motor, which comprises a three-winding stator and a fixed-pole rotor. The three-winding stator comprises a stator core and a stator winding, wherein the stator core is made of silicon steel sheets, and the stator winding is composed of a torque winding, a suspension force winding and a speed regulating winding. The suspension force winding is embedded in the inner layer of the stator slot, and the torque winding and the speed regulating winding are embedded in the outer layer of the stator slot in a phase-to-phase distribution mode. The fixed-pole rotor comprises a rotor core and a plurality of insulated rotor coils, wherein the rotor core is made of silicon steel sheets, and the insulated coils are wound in a special structure to form a closed loop and are sequentially embedded in the rotor slot. The rotor coil with a special connection mode is used to replace the traditional squirrel-cage rotor, so that the defects of the traditional speed regulating method of the magnetic suspension asynchronous motor, such as high cost, complex technology and harmonic generation of a frequency converter, can be effectively solved, and the problem of the induced current of the suspension force winding is considered.

This invention provides a technology for semiconductor manufacturing equipment in which a mobile body configured to transport substrates by magnetic levitation can transport objects heavier than the substrates, such as coverings, while suppressing the expansion of the footprint. [Solution] A semiconductor manufacturing apparatus for processing substrates, and a substrate transport system for transporting the substrates in a transport space, comprises: a substrate transport chamber comprising the transport space and equipped with a plurality of electromagnets for forming a magnetic field with respect to the travel surface; a mobile body having a magnet for levitating from the travel surface by the action of the magnetic field and configured to move along the travel surface while holding the substrate; and an auxiliary mobile body having a magnet for levitating from the travel surface by the action of the magnetic field and configured to move along the travel surface while in contact with the mobile body when the mobile body is moving along the travel surface holding an object heavier than the substrate, thereby assisting the levitation of the mobile body.