136 results about "High magnetic field" patented technology

The invention discloses a water-cooling pulsed high-intensity magnetic field coil, and belongs to the technical field of pulsed high-intensity magnetic fields. The coil adopts a laminated structure, each laminated sheet is provided with an opening and a boss, and a spiral structure is formed through electrical connection of the bosses. Each lamination is divided into a through-flow part, a water cooling part and a fixed part; the through-flow part is made of red copper, the water cooling part and the fixing part are made of stainless steel, and an integrated copper-steel composite structure is formed through welding. The water-cooling part is provided with water-cooling grooves welded and sealed by a cover plate; and the water-cooling grooves of the laminations are connected in series through water inlet and outlet holes to form a cooling flow channel. The fixing part is provided with a semicircular fixing hole used for limiting and flow guiding. And an insulating sheet is arranged between the adjacent laminations. The coil is pressed tightly through the upper and lower pressing plates and an insulated fixing stud. Through lamination partitioning and copper-steel compounding, the high-strength and efficient water-cooling capacity is achieved, and the problems of insufficient strength and cooling of the pulse high-intensity magnetic field coil under repetition frequency work are effectively solved.

The invention relates to the technical field of superconducting material processing, in particular to a preparation method of an Nb3Sn superconducting wire. The method mainly comprises the steps that Nb-Zr alloy is loaded into the exterior and / or the center of a Sn-Cu single-core rod, oxide powder is filled between the Nb-Zr alloy and the Sn-Cu single-core rod, then the Sn-Cu single-core rod and the Nb-Zr alloy are loaded into a copper substrate, and Nb3Sn subcomponents are obtained after multi-pass stretching, forming and fixed-length cutting; and uniformly arranging the Nb3Sn sub-components in the copper pipe along the circumferential direction to form a bundle, and after multi-pass stretching, carrying out heat treatment and cutting to obtain the Nb3Sn superconducting wire. By introducing the artificial point pinning array in density gradient distribution, the critical current density of the Nb3Sn superconducting wire in a high magnetic field of 8T-16T is enhanced, the problems that an existing uniform artificial point pinning center scheme generates a matching effect and limits the actual application of the superconducting wire are solved, and the decline degree of the critical current density of the Nb3Sn superconducting wire in the high field is relieved.

The invention discloses an insert magnetic field automatic debugging system and a debugging method thereof. The system comprises a guide rail two-dimensional adjusting structure used for adjusting the straightness of a guide rail structure, and a Z-direction moving motor reducer structure provides power for a moving trolley structure so that the moving trolley structure can move and be positioned on the guide rail structure; the X-direction piezoelectric ceramic and the Y-direction piezoelectric ceramic drive the debugging head motor reducer structure and the debugging head structure to perform X-direction and Y-direction movement and accurate positioning, so that meshing and separation of the debugging head structure and an insertion piece magnetic array magnetic field debugging bolt are realized; the debugging head motor reducer structure drives the insertion piece magnetic array magnetic field debugging bolt to rotate through the debugging head structure to complete magnetic field debugging; the corrugated pipe flange structure and the magnetofluid sealing transmission structure are communicated with the inside and outside of the vacuum barrel of the vacuum inner insert to realize straightness adjustment and power transmission of the guide rail structure; when the system is used for debugging, the speed is high, the precision is high, the magnetic field quality is good, in-situ debugging of the vacuum inner insert can be achieved, the efficiency is high, and the equipment risk is low.

The invention discloses a magneto-rheological damping spring vibration isolator, which relates to the technical field of dampers and comprises an upper shell and a lower shell, vibration isolation springs are distributed between the upper shell and the lower shell, an oil cylinder is arranged in the center of the lower shell, a cavity is formed in the oil cylinder, a piston is arranged in the cavity, a gap is reserved between the oil cylinder and the piston, and the magneto-rheological damping spring vibration isolator further comprises an auxiliary opening. An auxiliary opening is formed in the piston, an iron core is fixedly arranged in the auxiliary opening, the magnet exciting coil is arranged on the outer side of the iron core, the outer portion of the magnet exciting coil is connected with a control circuit, and the magnet exciting coil is used for controlling the damping of the spring vibration isolator. The damping response speed is increased, the effective action size is reduced in the working state, energy consumption is reduced, when the piston moves to a certain degree due to external impact, the limiting rod and the coil form mechanical contact, displacement is automatically limited, and therefore the effect of protecting circuit components is achieved.

The invention discloses an aluminum smelting high magnetic field area flue gas monitoring signal anti-interference transmission system, which comprises a signal acquisition module, a signal filtering module, a signal correction module and a signal transmission module, and relates to the technical field of aluminum smelting high magnetic field area flue gas monitoring. And by combining a dynamic parameter adjusting mechanism, electromagnetic interference of an aluminum smelting high magnetic field area is effectively filtered out. Meanwhile, the signal correction module corrects error data through trend analysis and CRC verification, distortion components caused by electromagnetic interference are eliminated in combination with spectral analysis and band elimination filtering, the accuracy and integrity of the smoke monitoring signal are remarkably improved, and the problem that noise, errors and distortion in an original signal affect the monitoring precision is solved; and anti-interference of signal transmission is realized through grading marking and path adaptation design of the signal transmission module.

The invention relates to the technical field of magnetic field monitoring, and discloses an aluminum smelting high magnetic field environment operation data real-time monitoring system and method.The aluminum smelting high magnetic field environment operation data real-time monitoring system comprises a difference sequence calculation module, a noise scale calculation module and a difference noise scale calculation module; the step starting point positioning module is used for determining suspected step starting point time; the least square fitting module is used for performing least square fitting to obtain a fitting model; the same-direction lagging wake calculation module is used for calculating a same-direction lagging wake index; the self-adaptive suppression module is used for calculating a decompensated magnetic field amplitude sequence; and the abnormity judgment module judges whether abnormity exists or not according to the mixed energy. According to the method, interference of slow drift of a magnetic field on noise judgment is suppressed through robust noise estimation, then suspected step starting point time is accurately captured through double-index moving average, compensation components are deducted through a fitting model, and a suppression mask is constructed to eliminate wake interference.

This invention relates to the field of magnetic field detection technology and discloses a magnetic field detection method using a CrTe / ZnTe semi-metallic heterojunction grating structure. The method involves establishing a CrTe / ZnTe semi-metallic heterojunction grating structure through material preparation processes and detector operating frequency bands. A magnetic field is then applied to the CrTe / ZnTe grating structure, establishing a theoretical model that correlates the magnetic field strength with the response spectrum characteristics. The designed structure is fabricated using an etching process, and the sample is then packaged and tested. The invention proposes designing a CrTe / ZnTe semi-metallic heterojunction grating structure and utilizing changes in the response spectrum of the CrTe / ZnTe grating structure to detect the magnitude of the external magnetic field. Even slight changes in the magnetic field can affect the magnetoresistance and other properties of the CrTe / ZnTe material, thereby further altering the resonant frequency of the response spectrum of the CrTe / ZnTe grating structure. This method effectively improves the sensitivity, resonant mechanical properties, and temperature stability of magnetic field detection, providing a novel solution for highly sensitive weak magnetic field detection.

The purpose of this disclosure is to provide a heat-assisted magnetic recording (HAMR) writer head with high magnetic field reliability and high accuracy. [Solution] Disclosed are a writer head for a heat-assisted magnetic recording device and a method for manufacturing a writer head. The writer head comprises a plurality of layers, including a waveguide cutoff layer, a waveguide layer, a near-field transducer layer, a heat sink layer, and a peg layer. Each layer has a tapered angle near the air bearing surface. The writer head further has a principal axis pole adjacent to an optical component having a similar tapered angle near the air bearing surface.

The application relates to a relay, a first avoiding part can play the roles of separating, lengthening and blocking an arc, the arc burning time is reduced, and the position of an arc starting point can be controlled. In addition, the first avoiding part is formed at a position with relatively weak magnetic field intensity of at least one of the first contact part and the second contact part, so that the arc starting point position can be controlled at a position with relatively high magnetic field intensity, thereby having a strong arc starting effect, meanwhile, the first avoiding part is adjacent to the arc starting point position, quick arc breaking can be realized, the arc separation effect is obvious, arc ablation of an inner cavity and explosion of the relay and other defects can be effectively avoided, the product performance can be ensured even under high load, and the product failure probability can be reduced.

The utility model discloses a kind of magnetic field generator based on mechanical wave, it is related to electromagnetic induction technical field, the utility model is by being arranged between ultrasonic wave transmitting unit and magnet cantilever beam of strip structure, when ultrasonic wave transmitting unit sends ultrasonic wave, when the frequency of ultrasonic wave and the natural frequency of cantilever beam match consistent, cantilever beam will appear resonance phenomenon with ultrasonic wave, it can be based on the resonance enhancement characteristics of cantilever beam, in the divergent space surrounded by cantilever beam, the amplitude of ultrasonic wave is caused to increase, to drive magnet substantially moves, produce the alternating magnetic field of higher magnetic field intensity, it can be widely applied in ultrasonic wave transducer and many other fields.

The invention discloses a high magnetic field permanent magnet orientation structure based on injection molding samarium-cobalt magnet molding, which comprises a polygonal first center magnet and a polygonal second center magnet, a lower mold orientation group is arranged outside the first center magnet, an upper mold orientation group is arranged outside the second center magnet, and according to the magnet structure and arrangement of the upper mold orientation group and the lower mold orientation group, the high magnetic field permanent magnet orientation structure is formed. The orientation of the N pole and the S pole is adjusted, the orientation magnetic field intensity of the permanent magnet orientation process is remarkably improved, and the problem of orientation unsaturation of a high-coercivity material is solved. The structure adopts a full permanent magnet orientation design, and compared with an electromagnetic orientation device, the mold manufacturing cost and the energy consumption cost are reduced by 30%.

This application belongs to the field of metal electromagnetic high-speed forming manufacturing technology, specifically disclosing a method and system for obtaining an electromagnetic forming actuator. The method includes: determining the basic structural parameters of the electromagnetic forming actuator with the goal of maximizing the magnetic energy utilization efficiency and the electromagnetic force impulse on the workpiece; obtaining the bottom morphology function of the electromagnetic forming actuator based on the electromagnetic forming force field requirements, and determining the parameters to be optimized and their value ranges in the bottom morphology function; determining a typical deformable workpiece configuration based on the workpiece deformation process and the target forming shape; calculating the weighted average of the magnetic field distribution uniformity index and magnetic energy efficiency of the electromagnetic forming actuator with different bottom morphology parameters on the typical deformable workpiece configuration; and selecting the optimal bottom morphology parameters based on a multi-objective optimization model with the goal of improving the magnetic field uniformity and magnetic energy efficiency. This application fundamentally solves the problem of uneven electromagnetic force caused by the structure of the electromagnetic forming actuator.

The application discloses a quench characteristic test sample rod suitable for high magnetic field and quasi-adiabatic working conditions, which comprises a lead sleeve and a vacuum cavity module, the bottom end of the lead sleeve is detachably connected with the vacuum cavity module through a butt flange, the vacuum cavity module comprises a heat insulation centering mechanism arranged in an inner cavity, the upper and lower ends of the heat insulation centering mechanism are respectively provided with an upper copper ring and a lower oxygen-free copper ring, and an embedded copper heater is sleeved on the heat insulation centering mechanism, a plurality of superconducting tape samples to be tested are uniformly and circumferentially arranged on the outer wall of the embedded copper heater, and the two ends of each superconducting tape sample to be tested are respectively welded and fixedly connected with the upper copper ring and the lower oxygen-free copper ring. The application utilizes the indium compression sealing of the vacuum cavity module to provide quasi-adiabatic working conditions for testing, can reduce the heat exchange between the normal state region of the superconducting tape and the environment, reduce the heat loss of the superconducting tape in the conduction process, and thus improves the accuracy of the quench propagation characteristic test of the superconducting tape.

The invention discloses a double-phase magnetic flux guide rail coupling system, an inverter circuit, a position detection method and a magnetic field control method. The system comprises an energy transmitting end and an energy receiving end, the energy transmitting end comprises multiple groups of first magnetic core coil devices which are connected in the extension direction, and each first magnetic core coil device comprises a first magnetic core and a first coil; in two adjacent groups of first magnetic core coil devices, two groups of first magnetic cores are directly connected, the current amplitudes are different, and the distances are equal; and in the two groups of first magnetic core coil devices which are closest to each other and have the same current amplitude, the winding directions of the first coils are opposite. According to the system, two-phase decoupling can be realized, the modeling difficulty of a magnetic circuit is reduced, the utilization rate of a magnetic field is improved, a two-phase driving mode in which two-phase output is completely independent can be realized, and finally wireless power transmission in the advancing process is realized. In addition, the position information of the vehicle can be detected, meanwhile, the output fluctuation of the voltage can be reduced by controlling the magnetic field, and the system stability and the energy utilization efficiency are improved.

The invention relates to the technical field of water heater control, and particularly discloses an air heating water heater control system which comprises a master control module, an electromagnetic heating module, a detection module, a safety protection module, a man-machine interaction module and a power module. The electromagnetic heating module comprises a high-frequency inverter, a self-adaptive coupling coil group and the like, and can convert power frequency alternating current into 20-50kHz high-frequency alternating current to realize 0-3000W stepless regulation non-contact air heating; the detection module feeds back operating parameters in real time through dual temperature measurement, capacitive water level and Hall magnetic field detection; the safety protection module integrates multiple protection mechanisms, and safety risks are avoided in an all-around mode. The main control module realizes closed-loop control, the man-machine interaction module supports parameter setting and state checking, and the power supply module provides stable power supply. The device is high in magnetic field transmission efficiency, high in heating speed, free of scale, accurate in temperature control, comprehensive in safety protection, convenient to operate, small in equipment abrasion and long in service life.

The application belongs to the technical field of magnetic variable measurement, and solves the technical problem of poor magnetic field measurement precision caused by single attitude adjustment of the existing Hall measurement system. The vacuum Hall measurement system for the in-vacuum undulator comprises a vacuum chamber, a Hall probe and a motion execution mechanism. The motion execution mechanism comprises a guide rail and a pose adjustment mechanism. The Hall probe is movable along the extension direction of the guide rail. The pose adjustment mechanism drives the Hall probe to move three-dimensionally to measure the magnetic field distribution through the guide rail. The pose adjustment mechanism comprises a Z-direction swing platform to adjust the pitch angle of the guide rail, a Y-direction swing platform to adjust the roll angle of the guide rail, a Y-direction moving platform, an X-direction moving platform and a Z-direction moving platform. The application can adjust the attitude in two directions and the position in three directions in space, reduce the parasitic displacement, make the Hall probe move three-dimensionally in the undulator and improve the magnetic field measurement precision.

The invention discloses a portable hydraulic tensioner calibrator, and relates to the technical field of metering calibration instruments, a control system is arranged at the tops of four pulleys, the top of the control system is provided with a magnetic suspension zero-friction calibration assembly and a kinetic energy recovery module, and the kinetic energy recovery module is arranged on one side of the outer wall of the magnetic suspension zero-friction calibration assembly. A magnetic suspension zero-friction verification assembly is arranged, zero-contact transmission of a piston is achieved through the magnetic suspension technology, nonlinear errors caused by mechanical friction can be thoroughly eliminated, a magnet adopts a Halbach array mode, magnetic pole arrangement is optimized, magnetic lines of force are concentrated in the single direction, a higher magnetic field can be output under the condition of the same magnet using amount, and the reliability of the device is improved. Meanwhile, the fiber grating sensor and multiple sensors are fused, force value changes of higher levels can be captured, the accuracy of the verification result is ensured, the magnetic suspension and magnetic fluid sealing technology can avoid physical contact between the piston and the cylinder wall, and the service life of the verification instrument is greatly prolonged.

The utility model provides a kind of device for testing the influence of magnetic field on insects, it is related to experimental device technical field, including testing device cabinet, the testing device cabinet inside bottom end is fixedly connected with test box, two sealing baffles are provided in the test box, the testing device cabinet one side is provided with the magnetic field generating device for generating magnetic field, test is carried out by the principle that magnetic field intensity is exponentially reduced with distance, according to the migration condition of insects inside test box, determine the most suitable magnetic field interval, in the detection process, if insects migrate to the lowest magnetic field interval, magnetic field can be further reduced, such as moving to high magnetic field interval, then further improve magnetic field.

The utility model discloses a superconducting magnet device for generating a three-dimensional vector magnetic field, which comprises a vacuum container, a superconducting magnet mechanism is arranged in the vacuum container, the superconducting magnet mechanism comprises a superconducting coil, and the superconducting coil is used for generating the three-dimensional vector magnetic field. Under the same working magnetic field, the structure space is smaller, the magnetic field utilization rate is higher, the manufacturing cost can be remarkably reduced, meanwhile, the uniformity of the magnetic fields provided by the X coil and the Y coil is higher, meanwhile, the ultra-low vibration performance is achieved under the high magnetic field, the optical or magnetic measurement requirement with the very high vibration requirement can be met, and the application prospect is wide. The superconducting coil is cooled by using the flexible cold conduction belt, the vibration of the superconducting coil can be effectively reduced, the vibration stability of a magnetic field is improved, 0.5-1% of current is overshot when the magnetic field is loaded, and then the current is adjusted to be reduced to a target magnetic field, so that the magnetic field can be quickly stabilized, and the drift effect of the magnetic field is reduced.

The utility model provides a temperature sensing unit and a detection device. The temperature sensing unit comprises a magnetic material, an antenna substrate, a diamond, a condensing lens, an optical filter, a photoelectric detector and a laser output port. According to the scheme, on the basis of the principle that the magnetic field of the magnetic material can change along with the temperature, the temperature is reversely deduced by measuring the magnetic field change of the magnetic material through the diamond NV color center, and due to the fact that the magnetic field detection sensitivity of the diamond NV color center is extremely high, higher temperature measurement sensitivity can be obtained in a wide temperature range through temperature inversion through the scheme. Meanwhile, the utility model provides a detection device suitable for monitoring the temperature of the cold plate of the dilution refrigerator, and the application feasibility of the NV color center sensing technology in the field is verified.

In one embodiment, the bridge includes a first magnetoresistive element having a first reference angle, a second magnetoresistive element in series with the first magnetoresistive element having a second reference angle, a third magnetoresistive element in parallel with the first magnetoresistive element having the first reference angle, and a fourth magnetoresistive element in series with the third magnetoresistive element having the second reference angle. The output of the bridge has a linear response over a range of horizontal magnetic field values ​​having non-zero values, with horizontal magnetic field strength values ​​in the range associated with vertical magnetic field strength values ​​having zero Oersted (Oe) values. The reference angle indicates the angle at which the magnetoresistive elements are most sensitive to changes in the magnetic field.

The utility model relates to a kind of optical fiber receiving circuit module for one turns many under magnetic field environment, including two-way optical fiber plug input to output end, filter capacitor C1, filter capacitor C2, pull-up resistor R1, pull-up resistor R2, signal reverser, multi-or non gate output circuit and TTL level output circuit;The utility model relates to the technical field of optical fiber receiving circuit, the optical fiber receiving circuit module for one turns many under magnetic field environment, realizes two-way optical fiber signal result logic truth table to determine output, is converted into serial communication, with scalability simultaneously, after accumulation can realize one-to-many optical fiber communication, ensure normal communication under magnetic field environment, reduce cost, without separate optical fiber converter, scalable one-to-many, realize the design of multiple optical fiber module conversion serial port, can be realized stable in high magnetic field environment, communication without influence, for receiving instruction reduces the circuit design of redundancy, maximum degree improves stability and reduces cost.

The utility model relates to the technical field of sensors, in particular to a three-dimensional magnetic sensor based on spin orbit moment, which comprises a packaging shell and a sensor chip packaged in the packaging shell. Compared with the prior art, the utility model has the following advantages: the heat radiation fins are arranged on the side wall of the packaging shell, so that the heat radiation area is effectively increased, the heat radiation is accelerated, the stable performance of the sensor can still be maintained under the high-strength working condition, the service life is prolonged, and the sensor chip adopts a bottom-to-top stacked structure, so that the cost is reduced. Particularly, the combination of the spin-orbit coupling layer and the magnetic layer enables the sensor to respond to the change of an external magnetic field and detect the direction and the strength of the magnetic field through the change of magnetic moment, so that the accurate measurement of a three-dimensional magnetic field is realized, and the magnetic layer is prepared into a circular or annular shape, thereby facilitating the uniform distribution of the magnetic field. And the buffer layer is arranged between the magnetic layer and the spin-orbit coupling layer, so that the transmission efficiency of the spin-polarized current is improved.

This invention relates to the field of superconducting material processing technology, specifically to a method for preparing Nb3Sn superconducting wires. The invention mainly involves inserting an Nb-Zr alloy into the exterior and / or center of a Sn-Cu single-core rod, filling the space between the Nb-Zr alloy and the Sn-Cu single-core rod with oxide powder, and then inserting it into a copper substrate. After multiple passes of stretching, forming, and length-cutting, Nb3Sn sub-components are obtained. These Nb3Sn sub-components are then uniformly arranged circumferentially within a copper tube to form a bundle, followed by multiple passes of stretching, heat treatment, and cutting to obtain the Nb3Sn superconducting wire. This invention enhances the critical current density of the Nb3Sn superconducting wire under high magnetic fields of 8T–16T by introducing an artificially pinned array with a density gradient distribution. This solves the problem of the matching effect produced by existing uniform artificially pinned center schemes, which limits the practical application of superconducting wires, and alleviates the decrease in critical current density of Nb3Sn superconducting wires under high fields.

This invention relates to the field of superconducting motor technology, and in particular to a low-loss superconducting motor and its design method. The low-loss superconducting motor includes a vacuum chamber, a stator assembly, and a mover assembly. The stator assembly includes a stator support frame with a planar top structure and a superconducting coil disposed on the planar structure. A protective cover is disposed above the superconducting coil, and a radiative heat shield is disposed on the protective cover. The mover assembly is disposed between the protective cover and the radiative heat shield. The mover assembly includes a frame-shaped mover support frame and a constant conductor coil. The temperature of the constant conductor coil is controlled by controlling the emissivity of the radiative heat shield, and the surface emissivity of the protective cover is used to cool the constant conductor coil. The invention also discloses a design method based on a low-loss superconducting motor. The air gap between the stator assembly and the mover assembly is small, which facilitates the achievement of a high magnetic field, reduces the Joule loss of the constant conductor coil, eliminates the need for air or water cooling pipes, and facilitates temperature control.

The paraffin tissue slicing machine convenient to separate comprises a machine body, a sample clamp, a driving mechanism, a waste chip groove, a mounting table, a knife rest, a U-shaped partition plate and a separating and collecting mechanism, the separating and collecting mechanism comprises magnetorheological fluid, an electromagnetic coil, an electric sliding table, a bearing plate and a grabbing mechanism, and a paraffin tissue block is sliced through a blade on the knife rest during reciprocating lifting; scraps in the slicing process fall into the separation cavity along the obliquely-arranged tool rest, the magnetorheological fluid is arranged in the separation cavity, the electromagnetic coil is arranged at the bottom of the magnetorheological fluid, the gradient magnetic field is generated after the electromagnetic coil is powered on, if metal impurities are contained in the scraps, the scraps can move towards the high-magnetic-field-intensity direction and are captured by the solidified magnetorheological fluid, and therefore the metal impurities are separated from the separation cavity. And the scraps without the metal impurities can flow in the low-magnetic-field-intensity area, separation of the scraps containing the metal impurities or not is achieved, and finally the scraps can be transferred into the metal impurity cavity and the pure paraffin cavity on the two sides through the grabbing mechanism so that different treatment modes can be adopted conveniently.

A magnetic property detection device, using magnetic field generating coils (210, 210') to increase the speed of change of a generated magnetic field, and using capacitor energy storage power supply devices (220, 220') to supply a large instantaneous current to the magnetic field generating coils (210, 210'), achieving magnetic property detection with high-speed change and high magnetic field intensity. Further provided is a magnetic property detection method, comprising: at least when capacitor energy storage power supply devices (220, 220') discharge to magnetic field generating coils (210, 210'), detecting magnetic property information of a preset position of an object to be measured (400), so that the difficulty of synchronous detection of magnetic fields and magnetic signals in rapidly changing magnetic field environments can be solved, matching of magnetic properties and magnetic field states can be facilitated, and thus the magnetic properties of the object to be measured (400) can be analyzed.

The utility model discloses a magnetic ring winding clamp with multilayer windings, which relates to the technical field of magnetic ring winding clamps and comprises a wire inlet seat, wire distributing frames are vertically and fixedly connected to two ends of the wire inlet seat, wire distributing grooves are vertically arranged between the wire distributing frames at equal intervals, fixing bolt holes are horizontally arranged at the lower ends of the wire distributing frames, and the fixing bolt holes horizontally penetrate through the wire inlet seat. A plurality of branching mechanisms are equidistantly mounted at the upper end of the wire inlet seat, and a positioning mechanism is mounted in the middle of the wire inlet seat; the supporting frame and the fixing base are matched with each other, so that the device is prevented from moving due to magnetic force in the using process, the using stability of the device is improved, the long-term stable using function is achieved, the wire guide plate and the wire distributing plate are matched with each other, the magnetic rings can conduct multi-group surrounding conveniently, the high efficiency of magnetic field generation is improved, and the service life of the device is prolonged. Therefore, the equipment can stably generate a magnetic field for a long time to magnetize the magnet, and the problem that the equipment cannot be used for a long time is finally solved.

The invention relates to the technical field of superconducting materials, and discloses a multi-element rare earth barium copper oxide high-temperature superconducting thin film and a preparation method thereof. In order to solve the technical problems that the pinning effect of an artificial magnetic flux pinning center of a high-temperature superconducting material is poor and the critical current density under a high magnetic field is low, the rare earth barium copper oxide is prepared by co-doping at least three rare earth elements at a rare earth site; an artificial magnetic flux pinning center of a perovskite oxide BaZrO3 and a double perovskite oxide Ba2YNbO6 is introduced into the rare earth barium copper oxide, and a multi-scale pinning system from the atomic scale to the nanoscale is formed in the superconducting thin film through atomic scale mismatch and introduction of the artificial magnetic flux pinning center; effective pinning of magnetic flux vortexes of different states and different sizes is achieved, and therefore the critical current density of the high-temperature superconducting material under the low-temperature high magnetic field is effectively improved finally.