2051results about "Superconductor elements usage" patented technology

The invention relates to a superconductive annular air-core reactor structure optimization method, a medium and a program product, and the optimization method comprises the steps: optimizing the structure parameters of a superconductive reactor through an MATLAB and COMSOL joint simulation technology, and carrying out the optimization of the structure parameters of the superconductive reactor through a multi-objective genetic algorithm, thereby achieving the optimization of the structure parameters of the superconductive reactor. Iterative optimization is conducted on structural parameters such as the coil inner diameter, the surrounding radius, the number of turns of the coils, the number of the coils and the number of parallel branches of the electric reactor, the optimization target comprises the minimum strip use amount and alternating current loss, and in the optimal solution set, according to the strip use amount and the alternating current loss, the strip cost and the refrigeration cost are calculated. And finally, outputting an optimal structure parameter meeting a design index so as to realize the minimization of the total cost. Compared with the prior art, the method can be used for structural optimization of the superconducting reactors with different capacities, structural parameters with the lowest cost under different indexes can be obtained by setting constraint conditions, and economic benefits of reactor design are improved.

The invention relates to a 1500MPa-grade nickel-based alloy for a second-generation high-temperature superconducting baseband and a preparation method of the 1500MPa-grade nickel-based alloy, and belongs to the technical field of materials. The nickel-based alloy comprises the following chemical components in percentage by weight: 15.0 to 17.0 percent of Cr, 15.0 to 17.0 percent of Mo, 4.5 to 9.5 percent of W, 5.0 to 7.0 percent of Fe, 0.3 to 0.7 percent of Mn, 0.01 to 0.05 percent of Si, 0.1 to 0.2 percent of V, 0.1 to 0.5 percent of Co, 0.1 to 0.2 percent of Al, 0.001 to 0.01 percent of B and Clt, 0.005%, Plt; 0.005%, Slt; 0.002%, Olt; 0.002%, Nlt; 0.002%, and the balance being nickel. On the basis of hastelloy, the strength of a matrix is improved by increasing the W element content, matching an optimized heat treatment process and combining cold deformation; the content of C is controlled, precipitation of carbides is controlled, and it is ensured that the carbides are completely dissolved in a matrix during homogenization treatment; and a pure smelting process is adopted, so that the oxygen content in the alloy is reduced, the inclusion content is controlled, and high purity is ensured. By adopting the component control strategy and the processing preparation and heat treatment process, the nickel-based alloy with the yield strength of 1,300 MPa or above, the tensile strength of 1,500 MPa or above and the ductility of 7.5% or above can be obtained after annealing is conducted for 5 min at the temperature of 900 DEG C, and the requirement of a second-generation high-temperature superconducting high-performance metal base band is met.

The invention discloses a method for improving deformation uniformity of a core wire of an NbTi superconducting wire, and belongs to the technical field of superconducting wire processing. The method comprises the following steps: performing deep hole drilling on an oxygen-free copper ingot rod, then assembling, welding and extruding the oxygen-free copper ingot rod and a single-core rod to obtain a composite rod, and performing multi-pass drawing on the composite rod to obtain the NbTi superconducting wire with high performance, low loss and high N value. The Jc of the prepared NbTi superconducting wire is 2880-3120 A / mm < 2 >, the loss is 450-550 mJ / cm < 3 >, the N value is 70-95, compared with a superconducting wire prepared through a conventional process, the N value is remarkably increased, the loss is remarkably reduced, the critical current density is increased, and the NbTi superconducting wire has wide application prospects in MRI magnets.

The invention relates to a 1400 MPa-grade nickel-based alloy for a second-generation high-temperature superconducting base band and a preparation method of the 1400 MPa-grade nickel-based alloy, and belongs to the technical field of materials. The nickel-based alloy comprises the following chemical components in percentage by weight: 15.0 to 17.0 percent of Cr, 13.0 to 15.0 percent of Mo, 5.5 to 9.0 percent of W, 5.0 to 7.0 percent of Fe, 0.4 to 0.6 percent of Mn, 0.01 to 0.05 percent of Si, 0.1 to 0.2 percent of V, 0.0 to 2.5 percent of Co, 0.1 to 0.2 percent of Al, 0.001 to 0.01 percent of B and Clt, 0.005%, Plt; 0.005%, Slt; 0.002%, Olt; 0.002%, Nlt; 0.002%, and the balance being nickel. On the basis of the Ni-Cr-Mo alloy, the composition design thought of increasing W and reducing Mo is adopted, the optimized hot working and heat treatment process is matched, and finally the strength of a base body is improved through cold deformation; the content of C is controlled, precipitation of carbides is controlled, and alloy elements are ensured to be completely dissolved into a matrix during homogenization treatment; and a pure smelting process is adopted, so that the oxygen content in the alloy is reduced, the inclusion content is controlled, and high purity is ensured.

The invention relates to a compact three-phase superconductive air-core reactor which comprises a vacuum heat insulation container, a cooling medium is contained in the vacuum heat insulation container, the vacuum heat insulation container comprises a vacuum heat insulation shell and a vacuum heat insulation cover, and a plurality of hanging rods extending into the vacuum heat insulation shell are arranged on the vacuum heat insulation cover; the three-phase superconducting magnet is immersed in the cooling medium, the three-phase superconducting magnet is formed by vertically stacking three single-phase superconducting magnets which sleeve the plurality of suspenders at intervals, and each single-phase superconducting magnet is of an iron-core-free hollow structure; the three low-temperature sleeve assemblies correspond to the single-phase superconducting magnets one to one, each low-temperature sleeve assembly comprises two low-temperature sleeves, the low-temperature sleeves partially extend into the vacuum heat insulation shell from the vacuum heat insulation cover, and the ends, located outside the vacuum heat insulation shell, of the low-temperature sleeves are connected into a power grid; and one end in the vacuum heat insulation shell is connected with the corresponding single-phase superconducting magnet through a current lead. The application scene of the reactor is expanded, and the problem that reactive compensation of a power grid is insufficient is effectively solved.

The invention relates to a preparation method of a niobium rod with uniformly crushed crystal grains, which comprises the following steps: firstly, casting an alloy raw material to obtain a cast ingot, and preheating the cast ingot to obtain a first blank; then the first blank is subjected to multiple times of axial forging and first heat treatment, and a second blank is obtained; then carrying out surface treatment on the second blank to remove defects on the surface of the second blank, and carrying out radial forging on the second blank to obtain a third blank; then, the third blank is subjected to oxidation treatment so that an oxidation film can be generated on the surface of the third blank to protect the third blank, hole pattern rolling is conducted on the third blank with the oxidation film generated multiple times, and a first bar is obtained; secondly, the first bar is subjected to rotary swaging and polishing, and a second bar is obtained; and finally, the second bar is subjected to second heat treatment, and a finished bar is obtained. Through multiple times of axial forging, radial rotary forging and groove rolling rotary forging, the obtained finished bar is uniform and fine in grain structure, the grain size GS is 7-9 grade, the elongation is larger than or equal to 40%, and the hardness (HV / 2.9 N) is smaller than or equal to 60.

The invention discloses a cage type structure for superconducting joint protection and magnet support and a superconducting magnet, and relates to the technical field of superconducting magnets, and the cage type structure comprises a support column, a support ring, a cold conducting disc, a cold conducting disc reinforcing plate, an axial pull rod, a radial pull rod, a superconducting joint, a joint protection cover, a superconducting coil and a superconducting coil skeleton. According to the invention, the cage-type frame formed by the supporting columns, the supporting rings, the cold conducting discs and the cold conducting disc reinforcing plates is designed, and the axial pull rods and the radial pull rods are combined, so that the superconducting joint protection and the magnet support are realized through a simple structure; the radial pull rod is fixedly connected with the outer side of the supporting ring in the radial direction, the heat conduction distance between the superconducting coil and the outer Dewar assembly is prolonged, heat leakage is reduced, sufficient strength is achieved, meanwhile, the radial pull rod is located at the bottom of the cage type structure, the operation space is sufficient, and installation and maintenance are convenient.

The invention relates to a 1300MPa-grade nickel-based alloy for a second-generation high-temperature superconducting baseband and a preparation method of the 1300MPa-grade nickel-based alloy, and belongs to the technical field of materials. The high-strength wear-resistant steel comprises the following chemical components in percentage by weight: 15.0%-17.0% of Cr, 15.0%-17.0% of Mo, 3.0%-4.5% of W, 5.0%-7.0% of Fe, 0.3%-0.7% of Mn, 0.01%-0.05% of Si, 0.1%-0.2% of V, 0.1%-0.5% of Co, 0.1%-0.2% of Al, 0.040%-0.080% of N, Clt and the balance of Fe. 0.002%, Plt; 0.005%, Slt; 0.002%, Olt; 0.002%, and the balance being nickel. The purification smelting process is adopted, the oxygen content in the alloy is reduced, the inclusion content is controlled, and the high purity of the material is guaranteed. By adopting the component control strategy, the heat treatment process and the final cold machining preparation, the nickel-based alloy with the yield strength being 1100 MPa or above, the tensile strength being 1300 MPa or above, the ductility being 15% or above and the product of strength and elongation being 20 GPa.% or above can be obtained after annealing is conducted for 5 min at the temperature of 900 DEG C, and the requirements of a second-generation high-temperature superconducting high-performance metal base band are met.

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.

The invention belongs to the technical field of superconducting material processing, and discloses a preparation method of a copper-clad aluminum slot wire WIC superconducting wire, and the method comprises the steps: obtaining a to-be-processed workpiece which comprises a copper-clad aluminum rod and a copper matrix round wire; the copper-clad aluminum rod is sequentially subjected to drawing, annealing, rolling and forming, and the copper-clad aluminum groove wire is prepared; the copper-clad aluminum slot wire and the copper matrix round wire are respectively cleaned and coated with a soldering flux, and then are simultaneously immersed into a tin bath filled with tin liquor to be matched with an inlaying mold to carry out inlaying welding for at least 1000m, so that the copper-clad aluminum slot wire WIC wire is obtained; and surface layer and deep layer welding defect characterization is carried out on the obtained copper-clad aluminum slot wire WIC, and it is ensured that the number of the surface layer and the number of the deep layer welding defects of the copper-clad aluminum slot wire WIC are both zero. According to the method, inlay welding is carried out in the mode that copper-clad aluminum is matched with dip soldering, and the problems that in the traditional technology, the labor cost is high, the welding quality is not stable, and the productivity is insufficient can be solved at the same time.

The invention belongs to the technical field of superconducting wires, and relates to an aluminum slot wire WIC superconducting wire and a preparation method thereof. The invention provides a preparation method of an aluminum slot wire WIC superconducting wire, and the method comprises the steps: selecting a workpiece according to a preparation technology of the aluminum slot wire WIC superconducting wire, and the workpiece comprises an aluminum slot wire, a superconducting round wire and two rolls of soldering round wires; the superconducting round wire is arranged in the groove of the aluminum slot wire in a threading mode, then the two rolls of soldering tin round wires are symmetrically embedded into the groove between the aluminum slot wire and the superconducting round wire, and finally the aluminum slot wire WIC superconducting wire is obtained through induction heating and online tin melting. The method solves the technical problems that a conventional preparation method of the aluminum slot wire WIC superconducting wire is low in production efficiency, multiple in wire soldering tin filling unevenness defect, low in RRR value and the like.

The invention discloses a preparation method of a slot wire for a superconducting wire. The preparation method comprises the following steps: manufacturing a copper bar into a copper flat wire through a drawing process; soaking the copper flat wire in a soldering flux, and then washing and air-drying the copper flat wire to obtain a prefabricated copper flat wire; combining the plurality of prefabricated copper flat wires according to the cross section structure of the superconducting wire; performing induction heating welding on the plurality of combined prefabricated copper flat wires through a welding mold to obtain a copper groove wire; performing water cooling, cleaning and drying on the copper slot wire to obtain a copper slot wire with a clean surface; and screening the copper slot line through a laser diameter measuring instrument and eddy current flaw detection equipment to obtain a copper slot line finished product. The copper slot wire with the groove in the surface is obtained by welding the copper flat wire, integrated forming of the structural slot wire is achieved, the production efficiency is improved, welding and finishing forming are carried out by designing dies of different structures, the surface quality of the copper slot wire is improved, the slot wire of a high-precision complex structure is obtained, the drawing speed is high, and the production cost is low. And large-scale production of the copper slot line is facilitated.

The invention discloses a superconductive synchronous phase modifier rotor adaptive dynamic balance compensation device and method, and relates to the technical field of superconductive synchronous phase modifiers, the superconductive synchronous phase modifier rotor adaptive dynamic balance compensation device comprises a rotor, the rotor is fixedly connected with a rotating shaft, and a plurality of vibration signal capture sensors are uniformly distributed on the side surface of the rotor and used for monitoring the vibration condition of each point in the circumferential direction of the rotor in real time; a gravity center compensation mechanism is further installed on the side face of the rotor and used for correcting the dynamic unbalance situation generated in the rotating process of the rotor in real time. When a certain vibration signal capture sensor on a rotor monitors that a dynamic unbalance condition occurs at a corresponding point, a sealing push plate in a balance box body at a corresponding position pushes out balance liquid stored in the balance box body through a communicating pipe, and the sealing push plates in the oppositely arranged balance box bodies move to a position far away from the communicating pipe; and the spaces, communicated with the communicating pipes, in the opposite balancing box bodies are filled with the pushed balancing liquid, so that the adjustment and compensation of the gravity center distribution of the rotor are completed.

The invention relates to a high-temperature superconducting cable and a manufacturing process thereof, and belongs to the technical field of electric wires and cables.The cable comprises a supporting framework, a buffer layer, a three-phase superconducting composite layer, a shielding layer, a heat insulation layer and a sheath layer which are sequentially arranged from inside to outside; the heat insulation layer comprises at least two layers of corrugated pipes formed by continuous rolling and welding, and the corrugated pipes are of periodic concave-convex structures obtained by conducting continuous rolling and side seam welding on metal strips to form closed pipe bodies and then conducting embossing treatment on the closed pipe bodies. A woven reinforcing layer wrapping the peripheries of the corrugated pipes is further arranged in the heat insulation layer, and the adjacent corrugated pipes are connected through supporting pieces to form a vacuum interlayer. According to the application, the corrugated pipe formed by continuous coiling and welding is combined with the combined structure of the braided reinforcing layer and the supporting piece, so that the continuous production of the large-length high-temperature superconducting cable can be conveniently realized, and the problems of axial stress concentration and seam accumulation defects existing in a heat insulating layer of a traditional prefabricated sleeve pipe can be eliminated; and the air tightness stability of the vacuum interlayer of the large-length high-temperature superconducting cable is ensured.

The invention discloses a preparation method of a Nb3Sn superconducting wire for a light-emitting device and the Nb3Sn superconducting wire, and relates to the technical field of superconducting, and the method comprises the following steps: depositing a rare earth element film on the surface of a SnTi alloy rod to obtain a first rare earth element alloy rod; a hole is drilled in the center of the first rare earth element alloy rod, a CuTa alloy rod is inserted, and a second rare earth element alloy rod is obtained; the second rare earth element alloy bar is inserted into the inner tin method Ni3Sn CuNb composite pipe, and an inner tin method Ni3Sn subcomponent is obtained; a plurality of inner tin method Ni3Sn subcomponent clusters are loaded into a Ta tube and an oxygen-free copper tube, and an inner tin method Ni3Sn final blank is obtained; and stretching the internal tin method Ni3Tin final blank to obtain the Ni3Tin superconducting wire. The rare earth element film is deposited on the surface of the SnTi alloy bar, the application range of the Nb3Sn superconducting wire is expanded, and due to the existence of the CuTa alloy bar, the tensile strength of the wire is stable after the heat treatment process, and wire damage caused by collision is prevented.

The invention belongs to the technical field of superconducting wires, and discloses a Ni3Sn superconducting wire with a stable RRR value and a preparation method of the Ni3Sn superconducting wire. An oxygen-free copper rod, a Ta sheet and a thin-wall oxygen-free copper sheath are prepared into a Cu / Ta / Cu composite tube, meanwhile, subcomponents are densely arranged and loaded into a Ta barrier layer, then the Ta barrier layer is loaded into the prepared Cu / Ta / Cu composite tube, a final Nb3Sn blank with a double-layer Ta structure is obtained, and the Nb3Sn superconducting wire is prepared through multiple times of stretching. According to the invention, a double-Ta barrier layer structure in the Nb3Sn superconducting wire is realized, and the risk that an original single Ta barrier layer structure is broken in a stretching process to cause diffusion of Sn to a copper stable layer and reduce the RRR value of the wire is reduced. Compared with a traditional single-layer Ta tube superconducting wire, the RRR value of the Nb3Sn superconducting wire prepared through the method is obviously increased, and the Nb3Sn superconducting wire is more stable.

The invention discloses an NbTi / Cu superconducting wire copper ratio test system and method based on image recognition. The method comprises the following steps: S1, collecting metallographic image data of a sample NbTi / Cu superconducting wire cross section and obtaining a real copper ratio through a density method; s2, obtaining a calculation copper ratio according to the number of pixel points of the binarized image; S3, taking the metallographic image data, the real copper ratio and the calculation copper ratio as a data set, and training a support vector regression model by using the data set; and S4, obtaining a cross-section image of the NbTi / Cu superconducting wire to be tested, and inputting the cross-section image and the calculated copper ratio obtained by the step S2 into the support vector regression model in the step S3 to obtain an actual copper ratio. The invention belongs to the field of superconducting composite wires, and solves the problems of low efficiency of a paper-cut method, inaccurate copper ratio result and tedious operation process of a density method in the current copper ratio test method. According to the invention, the accuracy of the copper ratio test is ensured, and the efficiency is improved.

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.

The invention relates to the technical field of critical current testing of superconducting tapes, in particular to a critical current testing device, system and method for a double-sided high-temperature superconducting tape. A critical current testing device for a double-sided high-temperature superconducting tape comprises a low-temperature box body which is provided with an accommodating space, the accommodating space is internally provided with an unwinding roller and a winding roller, the unwinding roller and the winding roller are respectively suitable for winding the double-sided high-temperature superconducting tape to be tested, and the double-sided high-temperature superconducting tape to be tested is provided with a first surface and a second surface which are correspondingly arranged; the first measuring assembly is suitable for measuring critical current and voltage of the first surface of the to-be-measured double-sided high-temperature superconducting tape; and the second measuring assembly is suitable for measuring the critical current and voltage of the second surface of the to-be-measured double-sided high-temperature superconducting tape. The problem that when the double-sided superconducting tape is measured, the lead current of the YBCO1 superconducting layer does not pass through the resistance layer and cannot reach the YBCO2 superconducting layer, the quench of the voltage cannot be detected, and the measurement error of the critical current is caused is solved.

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.

The invention discloses a processing method for controlling the copper ratio of a superconducting wire, and relates to the technical field of superconducting wire processing, comprising the following steps: acquiring a superconducting wire to be processed; carrying out on-line copper ratio test to obtain a copper ratio change trend and a copper ratio fluctuation range; carrying out coreless lathe scaling according to the copper ratio change trend to obtain a superconducting wire to be processed with fluctuating size; finishing the to-be-processed superconducting wires with fluctuating sizes to a uniform size by using a mold; repeating the online copper ratio test, the coreless lathe peeling and the die finishing until the copper ratio fluctuation range meets the copper ratio fluctuation requirement, and obtaining a superconducting wire in a first fluctuation range; and processing the superconducting wire in the first fluctuation range to a designed copper ratio to obtain a final superconducting wire. On-line copper ratio testing is matched with centreless lathe scaling, so that the copper ratio fluctuation of the superconducting wire is reduced, and the copper ratio uniformity and the performance stability are improved; and non-uniform copper ratio areas at the head and the tail of the wire can be fully utilized, and the yield of the wire is improved.

The invention discloses a hot forming preparation method of a high-temperature superconducting MgB2 wire rod based on resistance heating. The method comprises the following steps: 1, carrying out cold rotary swaging deformation after tubing to obtain a single-core complex; 2, after resistance heating, carrying out hot drawing deformation to obtain a single-core composite round wire; thirdly, the single-core composite round wires are bundled and assembled and then subjected to cold rotary swaging, and a multi-core bundled and assembled complex is obtained; 4, after resistance heating, carrying out hot drawing deformation to obtain a multi-core clustered composite MgB2 round wire; and 5, carrying out vacuum heat treatment to obtain the high-temperature superconducting MgB2 wire rod. Resistance heating is carried out before hot drawing deformation, so that the center Mg rod and the middle Nb barrier layer obtain excellent thermoplasticity, coordinated and uniform plastic deformation of the center Mg rod and the middle Nb barrier layer and the outer Cu sheath and uniform flowing of filled powder are achieved, and the MgB2 superconducting wire which is free of knots on the surface, free of core breakage in the interior and uniform in deformation is obtained and is suitable for the field of high-temperature superconducting. And meanwhile, the machining pass is reduced, the machining time is greatly shortened, and the preparation process is simplified.

The invention belongs to the technical field of cable processing, and relates to a preparation method and application of a flexible superconducting coaxial cable outer conductor. The preparation method comprises the following steps: mixing Nb powder and Ti powder by adopting a vibrating ball mill to prepare NbTi composite powder; a substrate of laser powder bed melting equipment is preheated, the NbTi composite powder is spread on the substrate of the laser powder bed melting equipment, a melting powder layer is scanned through the laser powder bed melting technology, a three-dimensional communicated grid structure is formed through interlayer staggered scanning, finally, the NbTi net-shaped alloy pipe is placed in a strong acid solution to be soaked for a short time, redundant metal powder is removed, and the NbTi net-shaped alloy pipe is obtained. And finally, the preparation of the flexible superconducting coaxial cable outer conductor for the quantum computer is realized.

The invention relates to the technical field of electric wires and cables, and discloses an ultrahigh-conductivity electric wire and cable and a preparation method thereof. A graphene enhancement layer; a nano composite insulating material layer; an inner semi-conductive layer; a conductive copper strip shielding layer; a silver-plated copper wire woven mesh shielding layer; an intelligent monitoring and protection sheath; the method comprises the following steps: step S01, preparing a superconducting core wire strand; step S02, preparing a nano composite insulating material layer; s03, preparing a shielding layer; step S04, intelligent monitoring and protection sheath preparation; the superconducting core wire strand formed by twisting a plurality of YBCO superconducting material filaments forms a stable structure with excellent conductivity under the precise control of twisting process parameters, so that the resistance is effectively reduced, the loss in the electric energy transmission process is reduced, the electric energy transmission efficiency is improved, high-density current can be borne for stable transmission, and the service life of the cable is prolonged. And the requirement of the modern electrical engineering field on high conductivity of wires and cables is met.

The invention discloses a method for repairing a high-temperature superconducting tape. The method comprises the following steps: S1, placing a to-be-repaired area of the high-temperature superconducting tape in a reaction container; s2, the reaction container is kept at a certain oxygen partial pressure, and annealing treatment is conducted on the to-be-repaired area; s3, after annealing treatment is completed, the high-temperature superconducting tape is taken out after the reaction container is cooled; wherein the to-be-repaired area is a dead pixel area in the high-temperature superconducting tape and an area with a certain length on two sides of the dead pixel area in the length direction of the tape. According to the repairing method, cutting treatment is not needed, that is, the original strip does not need to be damaged basically, and the dead pixel area can be repaired only by conducting proper heat treatment on the dead pixel area.

The invention provides a method for preparing an iron-based superconducting material single crystal in a microgravity environment, and belongs to the field of superconducting materials. The method specifically comprises the following steps: carrying out a microgravity crystal growth experiment in a high-temperature experiment cabinet of a space station, putting a solid-phase sintered or pre-melted rod-like raw material into a furnace body, heating and melting, then slowly solidifying, and finally growing the iron-based superconducting material single crystal with large size and extremely low defect density.

Described is a high-temperature superconductor (HTS) cable, comprising a plurality of HTS tapes, wherein all or part of a cross-section of at least one of the HTS tapes are removed to reduce the current carrying capacity of the HTS tape. Also described is a method for shaping the current density of a high-temperature superconductor (HTS) cable, wherein the HTS current density is carried by HTS tapes, and wherein the method comprises selective mechanical removal of all or part of the cross section of one or more of HTS tapes.

The invention discloses a low-loss superconducting motor and a design method thereof, and belongs to the technical field of superconducting motors. A low-loss superconducting motor comprises a vacuum chamber, a stator assembly and a rotor assembly are arranged in the vacuum chamber, and a protective cover is arranged between the stator assembly and the rotor assembly. One of the stator assembly and the rotor assembly is provided with a constant conductor coil, the other one is provided with a superconductor coil, the superconductor coil applies direct current, and the constant conductor coil applies alternating current. Meanwhile, the invention discloses a design method based on the superconducting motor, the low-loss superconducting motor and the design method thereof are adopted, an air gap between the stator assembly and the rotor assembly is small, a high magnetic field is easy to achieve, Joule loss of a common conductor coil is reduced, an air or water cooling pipeline can be omitted, and temperature control is easy.

To suppress reduction of an electrification performance (current value) in an end structure for a superconducting cable.SOLUTION: An end structure for a superconducting cable comprises at least a multilayer conductor 10 and an electrode part 30, and the multilayer conductor 10 is configured by laminating a plurality of superconducting wires 20, each presenting a tape shape, in a thickness direction of the superconducting wire 20. The electrode part 30 includes at least a plurality of slits 40. The multilayer conductor 10 is divided into a plurality of wire units 11, and stored in the slit 40 for each wire unit 11. When storing two superconducting wires 20 in the slit 40, it is preferable that directions of faces of the superconducting wires 20 are adjusted in such a manner that faces at the sides of a superconducting layer 23 and a stabilizing layer 24 constituting the superconducting wire 20 is brought into contact with or made close to an inner wall surface of the slit 40.SELECTED DRAWING: Figure 1

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.