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1190 results about "Superconducting Coils" patented technology

The coil windings of a superconducting magnet are made of wires or tapes of Type II superconductors (e.g.niobium-titanium or niobium-tin). The wire or tape itself may be made of tiny filaments (about 20 micrometers thick) of superconductor in a copper matrix.

Method, system and equipment for predicting electromagnetic characteristics of uninsulated superconducting coil and medium

The invention discloses an uninsulated superconducting coil electromagnetic characteristic prediction method, system and device and a medium, and relates to the field of electrical digital data processing. Constructing a loss function based on the data fitting loss and physical constraint loss including a Kirchhoff's current law loss item, a T-A equation loss item and an E-J power law loss item; training, testing and verifying the network model by adopting a sample data set, balancing each loss item in a loss function by adopting an adaptive weight distribution strategy in the training process, and minimizing the loss function through an Adam optimization algorithm to obtain an electromagnetic characteristic prediction model; and inputting the obtained current working condition parameters into the electromagnetic characteristic prediction model to obtain an electromagnetic characteristic prediction result. According to the method, the problems of low calculation efficiency, poor physical consistency and generalization ability and the like in the existing method are solved, and a feasible tool is provided for rapid design, optimization and operation of the uninsulated superconducting coil.
Owner:SHANGHAI JIAOTONG UNIV

Nuclear fusion superconducting coil heat treatment temperature control system and method

The invention discloses a nuclear fusion superconducting coil heat treatment temperature control system and method. The temperature control system comprises a fuel gas heating control subsystem, an electric heating control subsystem, a wind speed control subsystem, a temperature acquisition subsystem and a temperature analysis feedback subsystem. The temperature control method comprises the following steps: performing an electric heating zoning temperature control process in a heat treatment temperature rise stage; and a gas heating and electric heating zoning cooperative temperature control process in the heat treatment heat preservation stage is carried out. According to the method, the power load peak value is remarkably reduced, and meanwhile, the method is suitable for the heat treatment scene of the nuclear fusion superconducting coil by dynamically distributing the power proportion of gas and electric heating; the actual temperature of each temperature control subarea of the heating furnace body and the superconducting coil is detected in real time and compared with the preset target temperature value of the corresponding process temperature curve in real time, the top layer is combined with stirring fan rotating speed dynamic adjustment and gas-electric power complementation, a closed-loop feedback chain from a local part to an overall part is formed, and the response speed and stability are effectively improved.
Owner:聚变新能(安徽)有限公司 +1

Superconducting magnet quenching detection and early warning system and method based on skeleton current

The invention discloses a superconducting magnet quench detection early warning system and method based on skeleton current, and relates to the field of superconducting magnet quench detection, and the method comprises the steps: constructing an electrothermal coupling finite element model of a superconducting magnet and a conductive skeleton; simulating different quench events based on the electrothermal coupling finite element model; according to different quench events, quench judgment threshold values and different levels of quench severity index grading threshold values are determined; when the superconducting magnet is out of service, acquiring a skeleton current signal that the current of the superconducting magnet is shunted to the conductive skeleton; based on the skeleton current signal, according to the quench judgment threshold value and the quench severity index grading threshold value, grading early warning and protection response are conducted on the superconducting magnet quench, nondestructive testing can be conducted on the superconducting magnet quench, grading evaluation and optimization protection of the quench severity degree are achieved, and the safety of the superconducting magnet quench is improved. And the cost of the quench monitoring system is reduced.
Owner:SHANGHAI JIAOTONG UNIV

Vacuum pressure impregnation mold assembly process and mold applying process

The invention discloses a vacuum pressure impregnation mold assembly process and a mold. The process comprises the following steps: mounting bottom hard molds on a plurality of independent supporting platforms, and then positioning superconducting coils; descending the platform in sections to lay a bottom soft mold and a flow guide component to ensure uniform gaps; the side edge soft mold, the side edge hard mold, the top flow guide net and the soft and hard mold are sequentially installed, and finally the soft mold is subjected to segmented welding and the hard mold is reinstalled. The mold is assembled through the method, and modular assembly is achieved by lifting the independent supporting platform in stages. According to the process, the load of a single platform is reduced through sectional assembly, precision deviation and equipment damage are avoided, and meanwhile, the use of a lifting appliance is reduced to protect the dimensional stability of the coil; a soft and hard mold layered assembly mode is adopted, the machining difficulty of a large-size mold is simplified, the manufacturing cost is reduced, and the size control precision is improved; the step-by-step assembly process effectively reduces the wrong assembly risk, avoids the problem of glue injection port blockage, and ensures the success rate of the vacuum pressure impregnation process.
Owner:聚变新能(安徽)有限公司 +1

Multi-objective optimization method for non-planar coil of star simulator and star simulator magnet

The invention provides a multi-objective optimization method for non-planar coils of a star simulator and a star simulator magnet. The optimization method comprises the following steps: obtaining initial structures of a plurality of non-planar superconducting coils according to magnetic field configuration data of target plasma; according to the target magnetic field parameter, the engineering constraint parameter and the material constraint parameter of the configuration data, an objective function is constructed, the engineering constraint parameter comprises the engineering limit geometric parameter of the non-planar superconducting coil, and the material constraint parameter comprises the limit current carrying of the non-planar superconducting coil material; carrying out minimization solution on the target function to obtain optimized coil data; and performing materialization processing on the plurality of non-planar superconducting coils according to the optimized coil data to obtain a plurality of optimized non-planar superconducting coil models. According to the optimization method, a magnetic field matching-engineering feasibility-material safety three-dimensional constraint system is constructed, and the problem that the engineering cannot be realized on the ground is avoided.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD

Nib-3-tin composite superconducting wire and preparation method thereof

The invention belongs to the technical field of superconducting wires, and relates to a niobium-tin composite superconducting wire and a preparation method thereof. The invention provides a Nb3Sn composite superconducting wire. The Nb3Sn composite superconducting wire sequentially comprises an Nb3Sn superconducting wire core, a barrier layer, a stable layer, a transition layer, a substrate layer and a functional layer from inside to outside, the transition layer is formed by mixing copper and a dielectric polymer, and the copper content is continuously decreased in a gradient manner from inside to outside; the substrate layer is the dielectric polymer; the functional layer is a plurality of protruding metal microstructures. According to the invention, the functional layer with the broadband electromagnetic stealth function is integrated on the basis of the Nb3Sn superconducting wire rod, so that the radar cross section is obviously reduced while the Nb3Sn superconducting wire rod bears high-density superconducting current and generates a strong magnetic field, and the technical problem that a high-field superconducting magnet system is easy to detect in an electromagnetic environment is solved.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Conformal tool for superconducting coil

The invention discloses a superconducting coil shape preserving tool, which relates to the technical field of superconducting coils and is used for preserving the shape of a coil in a heat treatment process of the superconducting coil, and the coil is wound in a ring shape and is provided with a radial inner side surface, a radial outer side surface and two axial end surfaces. The superconducting coil shape-preserving tool comprises a support and a plurality of fixing structures, wherein the support forms an annular shape; the multiple fixing structures are connected with the support and arranged at intervals in the circumferential direction of the support, each fixing structure comprises multiple pressing plates, and the multiple pressing plates comprise the first pressing plate, the second pressing plate and the third pressing plate; the first pressing plate is used for limiting the radial inner side face of the coil, the second pressing plate is far away from the center of the support relative to the first pressing plate and used for limiting the radial outer side face of the coil, and the third pressing plate is arranged between the first pressing plate and the second pressing plate and used for limiting the two axial end faces of the coil. The superconducting coil shape preserving tool can be used for preserving the shape of the coil so as to reduce the deformation of the coil in the heat treatment process.
Owner:聚变新能(安徽)有限公司 +1

Assembling device for superconducting coil of star simulator

The invention provides an assembling device for a superconducting coil of a star simulator, which comprises a support frame and an overturning assembly, the support frame is used for supporting on a supporting surface, the overturning assembly is arranged on the support frame and comprises an overturning support and an overturning driving mechanism, the overturning support comprises a rotating frame and an annular coil mounting frame, the coil mounting frame is used for mounting the superconducting coil, and the overturning driving mechanism is used for driving the rotating frame to rotate. The coil mounting frame is arranged on the rotating frame, surrounds the peripheral side of the superconducting coil and is fixedly connected with the rotating frame; the rotating frame is rotationally connected to the supporting frame around the first axis so as to adjust the opening angle of the overturning support relative to the supporting frame. The overturning driving mechanism is in transmission connection with the rotating frame and used for driving the rotating frame to rotate relative to the supporting frame. The assembling device is low in requirement for the operation environment, can adjust the installation angle of the found coil, has good adaptability and flexibility, and can cope with the complex installation working condition of the special-shaped superconducting coil of the star imitator.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD

Nuclear fusion plasma real-time control method and system based on quantum neural network and 8G communication

The invention relates to the technical field of 8G, and discloses a nuclear fusion plasma real-time control method and system based on a quantum neural network and 8G communication. The method comprises the following steps: transmitting plasma multi-dimensional electromagnetic parameters at a rate greater than or equal to 1Tbps through an 8G terahertz communication network; quantum dimension reduction (the dimension compression ratio is greater than or equal to 98%) and classical time sequence prediction are executed at the edge quantum computing nodes; a control instruction is transmitted to the superconducting magnet array through the photon integrated interface, so that the adjustment of a magnetic field smaller than or equal to 1nm is realized; physical layer quantum encryption is adopted to guarantee communication security, and the secret key distribution rate is larger than or equal to 20 Mbps.
Owner:李建业

Superconducting magnet coil quenching detection method and related device

The invention discloses a superconducting magnet coil quenching detection method and a related device, and relates to the technical field of superconducting magnets, and the method comprises the steps: collecting the total voltage of two ends of a superconducting magnet coil and the current of any end of the superconducting magnet coil in real time in the operation process of a superconducting magnet; based on a relation curve that the inductance of the superconducting magnet coil changes along with the current, the resistive voltage in the superconducting magnet coil is determined through the total voltage at the two ends of the superconducting magnet coil and the current at any end of the superconducting magnet coil; when it is detected that the resistive voltage is increased to a voltage threshold value or the continuous increasing duration of the resistive voltage exceeds a duration threshold value, it is judged that the superconducting magnet coil is quenched; through the method, the problems that an existing superconducting magnet quenching detection method is complex and low in detection sensitivity are solved.
Owner:MAIKUN (SUZHOU) ENGINEERING TECHNOLOGY CO LTD

External superconducting magnet power supply

The utility model relates to the technical field of magnet power supplies, and discloses an external superconducting magnet power supply, which comprises a plurality of power supply modules connected in parallel, the input end of each power supply module is electrically connected with a power grid, the output end of each power supply module is electrically connected with an external superconducting magnet, and the plurality of power supply modules connected in parallel are used for jointly supplying power to the external superconducting magnet; wherein the power supply module comprises a switching power supply sub-module which is electrically connected with a power grid and is used for converting alternating current of a first voltage level input by the power grid into high-frequency alternating current of a third voltage level; and the linear adjusting tube is electrically connected with the switching power supply sub-module and the outer superconducting magnet, and is used for converting the direct current of the third voltage level into direct current of a fourth voltage level and inputting the direct current of the fourth voltage level into the outer superconducting magnet. According to the utility model, through the switching power supply sub-module and the linear adjusting tube, the power factor and the energy utilization rate can be improved, the harmonic wave is small, the power grid is not polluted, and the stability of the output voltage is ensured.
Owner:JIUJIANG LIYUAN RECTIFICATION EQUIP CO LTD

Quench detection method for superconducting coils using a leakage current

This invention provides a method for detecting quench in a superconducting coil using leakage current, comprising the following steps: Step 1: Determine a first detection connection point on the main superconducting tape adjacent to a first current connection point, wherein the first detection connection point and the first current connection point are equipotential points; Step 2: Determine a second detection connection point on the sampling superconducting tape, wherein the second detection connection point and the second current connection point are equipotential points; Step 3: Connect a leakage current sampling circuit to the first and second detection connection points. If the leakage current sampling circuit detects leakage current, it is determined that quench exists in the main superconducting tape. This invention uses a leakage current sampling circuit to solve the problem of difficulty in sampling the quench voltage of superconducting magnets.
Owner:SHANGHAI JIAOTONG UNIV

Ultra-compact high-field spherical tokamak for fusion energy

The present invention provides an appealing, fast, and cost-effective alternative to conventional nuclear fusion reactors. An ultra-compact spherical tokamak that combines three key features aimed at accelerating fusion energy as a viable energy source, these features are spherical type tokamaks, negative triangularity plasma shape and high-temperature superconducting coils. More specifically, the tokamak includes a toroidal vacuum vessel and a magnetic field system configured to confine a high temperature plasma. The magnetic field system includes a solenoid having a sand-hourglass shape; toroidal field coils having an inverse D-shaped design and high temperature superconductor (HTS) material; and poloidal field coils, external to the vacuum vessel. The vacuum vessel has a cross-section with similar inverse D-shape as the toroidal field coils.
Owner:UNIV DE SEVILLA

Superconducting magnetic levitation U-shaped track beam and preparation method thereof

The invention discloses a superconducting magnetic levitation U-shaped track beam and a preparation method thereof, and belongs to the technical field of bridge engineering.The superconducting magnetic levitation U-shaped track beam is used for running of a magnetic levitation train with superconducting coils arranged on the two sides of a train body, and the track beam comprises a plurality of track beam sections which are sequentially spliced in the longitudinal direction; each track beam section comprises a main beam body and two side plates arranged on the two transverse sides of the main beam body respectively, the two side plates and the main beam body are integrally formed to form a U-shaped beam body structure, a maglev train can run in the U-shaped beam body, mounting grooves are formed in the inner side wall faces of the two side plates and used for mounting ground coils, and the invention further provides a preparation method of the superconducting maglev U-shaped track beam. The superconducting magnetic levitation U-shaped track beam is formed by splicing the multiple track beam sections, the main beam body and the two side plates in the track beam sections are integrally formed, the number of joints of the track beam is greatly reduced, the smooth performance of the track beam is guaranteed, and the overall stability of a magnetic levitation track system is improved.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD

Hybrid aircraft high-power take-off energy supply system based on superconducting magnetic energy storage

The invention relates to the technical field of hybrid aircrafts, and discloses a high-power take-off energy supply system for a hybrid aircraft based on superconducting magnetic energy storage, which is characterized in that a superconducting coil is directly soaked in a hydrogen storage tank of the aircraft, and a large amount of liquid hydrogen carried by the aircraft is used as a cold source of the superconducting coil; the weight of a refrigerating machine and a heat preservation tank which are necessary for original superconducting magnetic energy storage is saved; when the aircraft is in a scene with low power requirements such as level flight or landing, the power generated by the superconducting generator driven by the gas turbine is greater than the power required by the aircraft, and at the moment, the superconducting coil can be charged to realize energy recovery and storage; under the scene of high power demand such as takeoff, the advantages of high power density, high response speed and the like of the superconducting coil are utilized to provide electric power for the propulsion unit so as to meet the high-power demand of the aircraft in the stages such as takeoff and the like, and the high-power maneuvering, electric energy management and transmission capabilities of the hybrid aircraft are greatly improved.
Owner:TAIHANG LABORATORY

Superconducting motor quench detection method and apparatus based on rotational symmetry of motor

The present invention discloses a superconducting motor quench detection method and apparatus based on rotational symmetry of a motor, belonging to the technical field of superconducting motor quench detection. The method includes: acquiring terminal voltages of each group of superconducting magnets in a superconducting motor, where the superconducting motor is pre-divided into at least two unit motors by using the rotational symmetry of the motor, and superconducting magnets located at corresponding positions are selected from the at least two unit motors as a group of superconducting magnets; calculating an absolute value of a terminal voltage difference of each group of superconducting magnets; and judging whether the absolute value exceeds a preset threshold, and if the absolute value exceeds the preset threshold, determining that the superconducting magnets are in a quench state. According to the present invention, induced voltages coupled by the terminal voltages of superconducting magnets are eliminated.
Owner:QINGDAO UNIV

Installation positioning device, superconducting magnet system and fusion reactor device

The invention discloses an installation positioning device, a superconducting magnet system and a fusion reactor device, and belongs to the technical field of fusion reactor engineering. The mounting and positioning device comprises a back plate assembly and a clamping assembly, wherein the back plate assembly is used for connecting a coil main body of the superconducting magnet system; the clamping assembly comprises a first insulating part, two clamping parts and a plurality of adjusting parts, and the first insulating part forms a mounting cavity which is at least used for accommodating a coil joint of the superconducting magnet system; the first insulating part is arranged between the two clamping parts, and the clamping parts are connected with the back plate assembly; the multiple adjusting pieces are arranged outside the first insulating piece in a surrounding mode, and the adjusting pieces are connected with the two clamping pieces respectively and used for adjusting the clamping force between the two clamping pieces. The coil connector is positioned and fixed for multiple times through the back plate assembly and the clamping assembly, the mechanical stability and the electrical insulation performance of the coil connector are improved, and the disassembly, assembly and maintenance cost is reduced.
Owner:聚变新能(安徽)有限公司 +1

A method for shimming iron sheets

The present invention provides an iron sheet shimming method, which uses the magnetic field uniformity deviation-norm and the weighted iron sheet thickness as the objective function. By introducing additional variables, the de-absolute value conversion of the magnetic field uniformity deviation-norm is realized, so that the objective function is converted into a linear form, and then the non-negativity constraint of the newly introduced variable and the equality constraint after the de-absolute value of the magnetic field deviation-norm are added to the original iron sheet thickness constraint, thus forming a new linear optimization system. The minimum iron sheet thickness is further introduced, and the original iron sheet thickness variable is numerically transformed to form a new variable to be solved. The new linear optimization system is solved by an integer optimization algorithm to obtain an integer solution of the iron sheet distribution. The present invention uses the initial magnetic field data of a 9.4T human magnetic resonance imaging superconducting magnet to verify the shimming effect of the above-mentioned high-performance iron sheet shimming method.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Stress distribution evaluation method and device of superconducting magnet, electronic equipment and storage medium

The invention discloses a stress distribution evaluation method and device of a superconducting magnet, electronic equipment and a storage medium, and belongs to the field of stress distribution calculation.The method comprises the steps that a finite element model of the superconducting magnet is obtained, winding simulation and cooling simulation are sequentially carried out, winding stress distribution and thermal stress distribution are obtained through calculation, and a finite element model of the superconducting magnet is obtained; superposing the two to construct a pre-stress field; performing electromagnetic field modeling on the model to obtain electromagnetic force distribution; further carrying out multi-field coupling stress analysis, and identifying a key stress plane with most concentrated stress; and finally, constructing a two-dimensional plane stress model based on the plane, and inputting winding and thermal stress as pre-stress and electromagnetic force as external load into the two-dimensional model so as to efficiently calculate final stress distribution of the superconducting magnet. Therefore, by implementing the method, the problems of unreliable stress calculation and low solving efficiency in the prior art can be solved.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID CO LTD

Hoisting tool and hoisting device for superconducting coil of star simulator

The invention provides a hoisting tool for a superconducting coil of a star simulator and a hoisting device for the superconducting coil of the star simulator. The hoisting tool comprises a connecting seat, a hoisting bracket, a first driving assembly and a second driving assembly, the whole hoisting support is of an arc-shaped rod structure and can be rotationally arranged on the connecting base in the first direction, the two ends of the hoisting support are located below the connecting base, and the star simulator superconducting coil can be rotationally clamped between the two ends of the hoisting support in the second direction; the first driving assembly is in transmission connection with the hoisting support and drives the hoisting support to rotate in the first direction. The second driving assembly is in transmission connection with the corresponding end of the star simulator superconducting coil and drives the star simulator superconducting coil to rotate around a second direction perpendicular to the first direction relative to the hoisting support. Through the combination of the first driving assembly and the second driving assembly, the star simulator superconducting coil can be driven to rotate in the two horizontal directions perpendicular to each other, and multi-angle adjustment of the mounting position of the star simulator superconducting coil is achieved.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD

Liquid hydrogen superconducting energy storage configuration system and method considering multi-mode safe operation

The invention relates to a liquid hydrogen superconducting energy storage configuration system and method considering multi-mode safe operation. The system comprises a superconducting energy storage application scene demand module, a superconducting strip performance parameter module, a superconducting magnet structure economic configuration optimization module, a superconducting magnet'electricity-magnetism-heat 'multi-physics field simulation modeling module and a superconducting magnet dynamic safe working area module which are in synergistic effect. According to the method, the minimum energy storage capacity and the maximum magnetic field intensity threshold value are determined according to the superconducting energy storage application scene requirement, the genetic algorithm is adopted to conduct strip use amount minimum parameter optimization on magnet structure parameters, and an electricity-magnetism-heat multi-physics field coupling simulation model is established to quantify the liquid hydrogen cooling requirement. And finally, constructing a dynamic safe working area with the maximum allowable temperature to realize closed-loop control. Compared with the prior art, the multi-mode operation safety of the superconducting energy storage system can be guaranteed, meanwhile, the using amount of superconducting strips and the liquid hydrogen cooling capacity are reduced, and the economic efficiency of the system is improved.
Owner:TONGJI UNIV

Vacuum pressure impregnation process optimization method, device, equipment, medium and product

The invention relates to the technical field of superconducting magnet manufacturing and insulation impregnation process optimization, and discloses a vacuum pressure impregnation process optimization method, device, equipment, medium and product, and the method comprises the steps: inputting a target porosity and a target permeability into an insulation layer homogenization fluid domain model to obtain a macroscopic homogeneous model; according to the macroscopic homogeneous model, a first corresponding relation between multiple technological parameters and the impregnation performance parameters under the boundary condition is determined through simulation, and the multiple technological parameters comprise at least two of the temperature, the glue injection parameter, the vacuum pressure, the resin viscosity and the resin curing kinetic parameter; and according to the plurality of first corresponding relations, optimizing the plurality of process parameters by taking the shortest filling time, the highest uniformity and the lowest residual bubble rate as optimization objectives to obtain an optimal process parameter combination of the vacuum pressure impregnation process. According to the method, the multiple process parameters are optimized, the multi-parameter optimization database can be established, and the optimal process combination scheme is obtained.
Owner:聚变新能(安徽)有限公司

Magnetic resonance imaging apparatus and method for controlling refrigerator

The purpose of the present invention is to provide a magnetic resonance imaging apparatus and a method for controlling a refrigerator. The magnetic resonance imaging apparatus increases the operating rate of an MRI apparatus by prolonging the replacement life of the refrigerator and reducing the replacement frequency of the refrigerator. And executing a cold head life prolonging mode. In the cold head life extension mode, regardless of the temperature of the superconducting coil, the displacer of the refrigerator is moved at a constant frequency lower than a predetermined upper limit frequency, and the drive frequency of the compressor drive unit adjusted by the compressor inverter is controlled in accordance with the temperature of the superconducting coil.
Owner:FUJIFILM CORP

Winding tool for special-shaped coil

The utility model belongs to the technical field of superconducting magnets, and particularly relates to a winding tool of a special-shaped coil, which comprises a side plate, a ball head wire pressing device is arranged on the outer surface of the side plate, the ball head wire pressing device comprises a horizontal supporting plate, and the horizontal supporting plate turns over to drive the coil to turn over. A trunking profiling device is arranged, the shape of a profiling trunking is adjusted, a convex arc plate and a horizontal supporting plate are in threaded connection through a bolt and are positioned through a step, the convex arc plate and a saddle-shaped six-stage framework are fixedly installed, and the saddle-shaped six-stage framework and a sliding rail type line pressing fixing cross beam are in threaded connection through a screw. The sliding rail type wire pressing fixing cross beam is in threaded connection with the sliding block through a bolt, and the sliding block is in threaded connection with the concave arc plate through a screw rod, so that the concave arc plate moves along with the sliding block and is attached to the saddle type six-stage framework in a reverse jacking mode, a profiling space of the wire groove is formed, and the shape of the wire groove is flexible and accurate.
Owner:JIAXING KEMAI SUPERCONDUCTING TECH CO LTD

Rapid three-dimensional electromagnetic simulation method and verification device for large uninsulated coil

The invention discloses a rapid three-dimensional electromagnetic simulation method and verification device for a large-scale uninsulated coil, and aims to solve the problems of large calculation load, difficulty in homogenization, poor field-circuit coupling convergence and low result precision of the three-dimensional simulation of the existing large-scale uninsulated coil. The simulation method comprises the following steps: establishing a homogenized coil which does not divide specific turns, and setting anisotropic resistivity; constructing a current source area intercepted on the coil body and a free turn-to-turn resistance area connected in parallel with the current source area; applying current source excitation according to an open loop / closed loop coil; and the precision is ensured through radial grid encryption and result convergence verification. The verification device comprises a three-dimensional multi-turn verification coil, a direct current source, a multi-direction alternating external field applying module and a voltage and magnetic field measuring unit, direct current is supplied, an alternating external field is applied, and the simulation accuracy is measured and verified in real time. The method is simplified in modeling, rapid in calculation, good in convergence and high in precision, adapts to open-loop / closed-loop and single-cake / multi-cake coils, and is suitable for large uninsulated superconducting coils in rotary and linear motors, nuclear fusion equipment and the like.
Owner:CHINA YANGTZE POWER

High-temperature superconducting cable and high-temperature superconducting magnet

The utility model provides a high-temperature superconducting cable and a high-temperature superconducting magnet. The high-temperature superconducting cable comprises a metal coating layer and a plurality of superconducting sub-cables arranged in an array. The superconducting sub-cable comprises a superconducting conductor extending in the cable extending direction and a heat conduction layer wrapping the periphery of the superconducting conductor, and the periphery of the superconducting conductor is tightly attached to the inner wall of the heat conduction layer. A first attaching part and a first gap part are arranged between the outer walls of the heat conduction layers of the adjacent parts of any two adjacent superconducting sub-cables, and a second attaching part and a second gap part are arranged between the inner wall of the metal coating layer and the outer wall of the heat conduction layer of the closest superconducting sub-cable. The first gap portion and the second gap portion each form at least one cooling channel. The current of the quenched superconducting sub-cable can be shunted to the heat conduction layer of the adjacent superconducting sub-cable through the heat conduction layer, and the heat conduction layer can exchange heat with the cooling liquid of the cooling channel, so that the temperature of the superconducting sub-cable can be quickly reduced to a superconducting interval, and the cable can be prevented from being burnt down due to quenching.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD

Online program-controlled excitation power supply with quench protection for high-temperature superconducting magnet

An on-line program control excitation power supply with quench protection for a high-temperature superconducting magnet comprises a single-chip microcomputer for receiving control data, outputting control voltage through digital-to-analog conversion (DAC) of the single-chip microcomputer, and magnetizing a magnet coil through current stepping; a sampling signal is output to the liquid crystal screen to display corresponding voltage and current values in real time after being processed by the single-chip microcomputer analog-to-digital conversion ADC; voltage signals at the two ends of the magnet coil are sampled and returned to the single-chip microcomputer to be processed, when high voltage occurs, it is judged that the voltage signals are abnormal voltage signals, quench protection is carried out, the single-chip microcomputer outputs control signals to cut off connection between the magnet coil and the excitation power source, and residual energy of the magnet coil is released through the high-power thyristor. The provided excitation power supply has the characteristics of high power, high stability, good repeatability and good linearity; performing numerical control stepping output, gradually applying current to the superconducting coil, and slowly establishing a magnetic field; effective quench protection is achieved, and it is guaranteed that a magnet coil is not damaged by quench.
Owner:TIME MEDICAL JIANGSU

Fixing mechanism, fixing method and assembling method for superconducting magnet device

The invention discloses a fixing mechanism, a fixing method and an assembling method for a superconducting magnet device, the fixing mechanism comprises a support assembly and a first mounting part fixed on the support assembly, the support assembly at least comprises two first supports oppositely arranged in the horizontal direction and a second support connected with the top ends of the two first supports, the first mounting piece is arranged on the second bracket; the first installation part is arranged to be of a fixing structure matched with a flange structure on the surface of the superconducting magnet device, and the superconducting magnet device can be detachably connected with the first installation part through the flange structure. Wherein the central axis of the Dewar is perpendicular to the first support and the second support, and the superconducting magnet device is kept in a vertical state. In the assembling process of the superconducting magnet device and the iron yoke, the superconducting magnet device is always kept in the vertical state, the superconducting magnet device does not need to be turned over by 90 degrees to be in the horizontal state, and the assembling risk caused by the fact that the superconducting magnet device needs to be turned over in the existing assembling process is avoided.
Owner:MAIKUN (SUZHOU) ENGINEERING TECHNOLOGY CO LTD

Support structure of correction field superconducting coil and superconducting Tokamak device with same

The invention relates to the field of superconducting Tokamak devices, and discloses a support structure of a correction field superconducting coil and a superconducting Tokamak device with the same, the support structure comprises a first support assembly, the first support assembly is arranged on a longitudinal field coil and is used for supporting an upper arc section of the correction field superconducting coil; the second supporting assembly is fixed to the ground supporting structure of the longitudinal field coil and used for supporting the lower arc-shaped section of the correction field superconducting coil; the vertical supporting assembly is located between the first supporting assembly and the second supporting assembly in the vertical direction and used for fixing the two vertical extending sections in the two sets of adjacent correction field superconducting coils; the cooling assembly comprises a first cooling part used for exchanging heat with the first supporting assembly and a second cooling part used for exchanging heat with the second supporting assembly. Therefore, the overall heat balance of the superconducting Tokamak device can be realized, and the position precision and the working efficiency of the superconducting coil in the correction field can be effectively improved.
Owner:聚变新能(安徽)有限公司 +1

System for detecting equivalent shearing force of nuclear fusion superconducting coil under multi-element coupling working condition

The invention discloses an equivalent shear force detection system for a nuclear fusion superconducting coil under a multi-element coupling working condition, and belongs to the field of conductor insulation development of the nuclear fusion superconducting coil. The system comprises a nuclear magnetic resonance scanner, a signal exchanger, a liquid helium cooling system, a superconducting coil immersed curing insulation composite material sample piece, a four-stage magnetic field, a bipolar magnetic field, a neutron irradiation probe, a liftable rotary mechanical arm and an AI large model processing server. Completing the detection of the equivalent shearing force of the superconducting coil insulating material under the working conditions of magnetic coupling, neutron irradiation and the like in the nuclear fusion reaction stage; the insulation material equivalent shear force detection system can detect the endogenous organization structure change of the insulation composite material of the superconducting coil in the nuclear fusion reaction stage, and can avoid the situation that the electric insulation composite material of the superconducting coil is forced to be interrupted in the nuclear fusion reaction due to fatigue damage caused by concentrated equivalent shear force.
Owner:HUAINAN NEW ENERGY RES CENT