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565results about "Superconductor devices" patented technology

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

Preparation method and application of flexible superconducting coaxial cable outer conductor

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.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Method for preparing iron-based superconducting material single crystal in microgravity environment

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.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Mgb 2 superconducting wire and preparation method therefor

The present invention relates to the technical field of superconducting materials. Disclosed are a MgB2 superconducting wire and a preparation method therefor. The preparation method comprises: melting Mg, Cu and Ti to obtain a Mg alloy ingot, processing the Mg alloy ingot to obtain a Mg alloy rod, loading the Mg alloy rod and B powder into a Nb tube to obtain a composite rod, processing the composite rod to obtain a single-core wire, loading the single-core wire into an oxygen-free copper tube, then loading into a monel tube in a densely-packed manner, and performing cold-forming treatment to obtain a multi-core composite wire; and performing high-temperature phase-forming heat treatment on the multi-core composite wire to prepare the MgB2 superconducting wire. In the present application, the Mg alloy rod containing Cu and Ti metal elements is used as a Mg source for preparing a MgB2 multi-core wire, so as to improve the plastic deformation ability of the Mg alloy rod in the wire treatment processes, and improve the grain boundary coupling, thereby improving the current carrying performance of the MgB2 superconducting wire.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Multi-barrier-layer MgB2 superconducting wire and preparation method thereof

The invention belongs to the technical field of superconducting material processing, and discloses a multi-barrier-layer MgB2 superconducting wire and a preparation method thereof. A plurality of groups of interlayers of the wire are composed of Cu / Ni / Nb, outer-layer copper serves as a stabilizer, Ni serves as a low-cost outer barrier layer, Ni and the outer-layer copper are mutually diffused in the hot extrusion process to form a stable Cu-Ni compound, and Nb foil is added into the Ni layer to serve as an inner barrier layer so as to restrain the diffusion problem of a small amount of Ni-Mg. According to the multi-barrier-layer MgB2 superconducting wire, Nb is greatly replaced by Cu / Ni, the raw material cost is remarkably reduced, the barrier layers are mutually diffused in the hot extrusion process to achieve metallurgical bonding, uniform deformation of the wire in the subsequent machining process is facilitated, the possibility of damage of the barrier layers is reduced, the current-carrying performance of the wire is improved, the Jc of the multi-barrier-layer MgB2 superconducting wire under 4.2 K and 3T is 5199-6271 A / mm < 2 >, and the service life of the multi-barrier-layer MgB2 superconducting wire is prolonged. And the current-carrying performance is obviously improved, and the application prospect is wide.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Preparation method of Nb3Sn superconducting wire

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.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Multi-objective optimization method, device and medium for structural parameters of superconducting cable

A multi-objective optimization method for structural parameters of a superconducting cable, comprising steps of: S1, obtaining structural parameters and performance parameters of the superconducting cable, setting a constraint range of the structural parameters of the superconducting cable, based on the structural parameters and performance parameters of the superconducting cable, constructing an objective function, to establish a multi-objective optimization model of the structural parameters of the superconducting cable; and S2, through an improved multi-objective grey wolf optimization algorithm, iteratively solving the multi-objective optimization model of the structural parameters of the superconducting cable, to obtain an optimal solution for each of the structural parameters of the superconducting cable; where, to an iteration coefficient in a multi-objective grey wolf optimization algorithm, a weight coefficient negatively correlated with an overall sensitivity index of each of the structural parameters of the superconducting cable is given, to obtain the improved multi-objective grey wolf optimization algorithm.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO

Superconducting semi-rigid cable made of high-purity aluminum and preparation method thereof

The invention relates to the technical field of cable preparation, in particular to a superconducting semi-rigid cable made of high-purity aluminum and a preparation method thereof.The method comprises the steps that the high-purity aluminum is adopted as an inner conductor, and the inner conductor is preprocessed; coating the surface of the pretreated inner conductor with a PTFE mixture by using a pushing machine at normal temperature to obtain a normal-temperature pushing core wire; the qualified normal-temperature pushing core wire is wound on a cable reel and then placed in a vacuum high-temperature furnace to be subjected to vacuum sintering so as to obtain an inner conductor wrapped with an insulating layer; and the inner conductor wrapped with the insulating layer penetrates into the processed pure aluminum outer conductor tube, and the outer conductor is wrapped with PTFE to form an outer protective sleeve. According to the invention, the performance stability of the superconducting semi-rigid cable preparation can be improved.
Owner:ċ˜‰ċ…´çżĵĉ³˘ç”µċ­ĉœ‰é™ċ…Ĵċ¸

Thermal measurements using superconducting materials

An example method described herein includes operating a first component of a circuit. The method also includes, while operating the first component, supplying a current to a superconducting wire that is thermally-coupled to the first component, and determining whether the superconducting wire has transitioned between a superconducting state to a non-superconducting state in response to the current. The method further includes measuring a temperature of the first component based on whether the superconducting wire transitioned between the superconducting state to the non-superconducting state in response to the current, and adjusting operation of the first component in accordance with a determination that the temperature exceeds a predetermined threshold temperature.
Owner:PSIQUANTUM CORP

Semiconductor structure and method for manufacturing same

A method for manufacturing a semiconductor structure and a semiconductor structure are provided. The manufacturing method includes the following operations. A substrate is provided, and a first groove and a second groove are formed in the substrate, each of the first groove and the second groove having a depth in a first direction. The first groove includes multiple first sub-grooves arranged in the first direction, the second groove includes multiple second sub-grooves arranged in the first direction, and sidewalls of the first sub-grooves and sidewalls of the second sub-grooves are convex outwards. Word lines protruding away from the first groove each are formed at an interface of adjacent first sub-grooves. First source-drain layers formed on the sidewalls of the first sub-grooves, and second source-drain layers protruding away from the second groove each are formed at an interface of adjacent second sub-grooves.
Owner:CHANGXIN MEMORY TECH INC

Preparation method of Bi-2212 powder with stable authigenic 14: 24AEC second phase

The invention discloses a preparation method of stable in-situ 14: 24 AEC second-phase Bi-2212 powder, which comprises the following steps: preparing powder with specific components by controlling the components of a Bi-2212 precursor solution, and then adjusting by a fine heat treatment process to obtain the stable in-situ 14: 24 AEC second-phase Bi-2212 powder. According to the method disclosed by the invention, components of a Bi-2212 precursor solution are controlled, the components of Bi-2212 precursor powder after heat treatment and the molar ratio of Sr to Ca are monitored to be within a specific range, and a heat treatment process is matched for adjustment, so that stable generation of a 14: 24 AEC second phase in the Bi-2212 precursor powder is ensured; the self-generated 14: 24 AEC second phase can improve the critical current density of the Bi-2212 superconducting material; the method is easy to operate, low in cost, high in controllability and operability and suitable for being rapidly applied to the field of Bi-2212 superconducting material preparation.
Owner:NORTHWEST INSTITUTE FOR NONFERROUS METAL RESEARCH

High-strength metal composite strip and preparation method thereof

The invention discloses a high-strength metal composite strip and a preparation method thereof.The high-strength metal composite strip is composed of a first outer-layer alloy, a middle-layer alloy and a second outer-layer alloy which are sequentially stacked, the first outer-layer alloy and the second outer-layer alloy are Ni-9wt.% W alloy, the middle-layer alloy is Ni-12wt.% W-3% Mo alloy, and the second outer-layer alloy is Ni-12wt.% W-3% Mo alloy. Wherein the content of the cubic texture of the composite strip is not lower than 90%, and the yield strength of the composite strip is not lower than 480 MPa. According to the composite strip, a strong cubic texture is formed on the surface layer, and the whole strip is high in strength and free of ferromagnetism.
Owner:HENAN MECHANICAL & ELECTRICAL ENG COLLEGE

Mgb2 superconducting wire, method for manufacturing mgb2 superconducting wire, superconducting coil, and magnetic generator

The present invention provides: a MgB2 superconducting wire that has a barrier layer of highly uniform thickness covering a MgB2 core and that reduces MgB2 filament defects and is suitable for thinning and lengthening; a MgB2 superconducting wire manufacturing method for manufacturing the same; a superconducting coil using the same; and a magnetic generator including the superconducting coil. A MgB2 superconducting wire (200) comprises: a core material (210); a MgB2 filament (220) in which a MgB2 core (221) is covered with a barrier layer (222); and a metal sheath (230). The MgB2 filament (220) has a barrier layer (222) thickness on the outer peripheral side of the wire not more than three times the barrier layer (222) thickness on the core side of the wire. The method for manufacturing the MgB2 superconducting wire includes a step for forming a single core wire, a step for forming an embedded material, a surface reduction processing step, and a heat treatment step. The embedded material is formed by arranging the single core wire in a recess formed in the outer surface of the core material or by incorporating a spacer in a gap.
Owner:HITACHI LTD

Internal tin method Nb3Sn superconducting wire integrated with piezoelectric sensing function and preparation method of internal tin method Nb3Sn superconducting wire

The invention belongs to the technical field of superconducting materials, and discloses an internal tin method Nb3Sn superconducting wire integrated with a piezoelectric sensing function and a preparation method of the internal tin method Nb3Sn superconducting wire. According to the method, a piezoelectric functional layer and a dielectric layer are prepared on the surface of a SnAl alloy rod, a CuAg alloy rod is installed after drilling to form a composite rod, the composite rod is inserted into an inner tin method Nb3Sn / CuNb composite pipe to be drawn into a subcomponent, then the subcomponent is bundled and installed into a Ta pipe and an oxygen-free copper pipe, and the wire is prepared through multiple times of stretching. The piezoelectric functional layer can convert micro strain into measurable electric signals, in-situ real-time monitoring of mechanical stress and the like in the wire rod is achieved, the CuAg alloy bar can stabilize the tensile strength of the wire rod and promote generation of an Nb3Sn phase, and on the premise that the superconducting performance is not affected, the operation reliability and safety of the high-field magnet under the extreme working condition are improved.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Method for improving current downloading capability of REBCO superconducting layer in magnetic field

The invention discloses a method for improving the current downloading capacity of an REBCO superconducting layer in a magnetic field, and belongs to the field of superconductor materials, and the method comprises the steps: depositing an auxiliary layer on the surface of the REBCO superconducting layer, and carrying out the rotary grinding of the auxiliary layer on abrasive paper in cooperation with a cleaning solution, so as to introduce high-density dislocation into the REBCO superconducting layer, and cleaning the surface of the ground REBCO superconducting layer by using a cleaning solution, depositing a silver layer, and carrying out oxygen absorption treatment to obtain the final REBCO superconducting tape. According to the technical scheme, the on-site performance of the REBCO superconducting layer can be improved at low cost.
Owner:SUPERMAG TECHNOLOGY (SHANGHAI) CO LTD

Superconducting coaxial cable and preparation method and application thereof

The invention belongs to the technical field of superconducting coaxial cable processing, and particularly relates to a superconducting coaxial cable and a preparation method and application thereof. The superconducting coaxial cable is composed of an outer conductor, a PTFE insulation module and an inner conductor arranged in the PTFE insulation module, the PTFE insulation module is a cylinder with a through hole in the center, supporting structures are symmetrically arranged at the two axial ends of the cylinder, a non-supporting structure is arranged in the middle of the cylinder, and the specific structure of the PTFE insulation module effectively regulates and controls the effective dielectric constant of an insulator. Therefore, the characteristic impedance of the superconducting coaxial cable is flexibly and finely adjusted, and the application requirement of a quantum computer signal transmission device on the characteristic impedance is met. The PTFE insulating module is prepared by pressing and sintering, and NbTi filaments are embedded into the prepared PTFE module by a heating method and are assembled with an outer conductor to form the superconductive coaxial cable. The method is simple in process, convenient to assemble and suitable for large-scale production.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD +1

High-temperature superconducting strip with non-uniform distribution of critical current density and preparation method of high-temperature superconducting strip

The invention discloses a high-temperature superconducting strip with non-uniform distribution of critical current density and a preparation method thereof, and belongs to the technical field of high-temperature superconducting materials. The critical current density of the high-temperature superconducting strip is non-uniformly distributed in the width direction, the current distribution of the high-temperature superconducting strip can be regulated and controlled according to requirements, the high-temperature superconducting strip comprises a high-temperature superconducting layer, the chemical formula of the high-temperature superconducting layer is Re < 1 + a > Ba < 2 + b > Cu < 3 + c > O < 7-d + x% (mol) BaMO3, and Re is selected from Y, Gd, Eu and Sm; m is selected from Hf, Zr and Sn; the preparation method comprises the following steps: depositing the high-temperature superconducting layer on the strip substrate; depositing a metal silver layer on the deposited strip; and carrying out heat treatment on the deposited strip in an oxygen environment, and carrying out laser heat treatment after slitting and / or copper plating. The critical current density of the high-temperature superconducting strip in the width direction is non-uniformly distributed and controllable, the failure risk of the strip is effectively reduced, and the service performance of the strip is improved.
Owner:SUPERMAG TECHNOLOGY (SHANGHAI) CO LTD

Production method of low-temperature superconductive low-heat-leakage superfine coaxial cable

The invention relates to the technical field of cables, in particular to a production method of a low-temperature superconductive low-heat-leakage superfine coaxial cable, the outer diameter of the coaxial cable is smaller than or equal to 1.5 mm, and the cable is provided with a core material, a first superconductive layer, a PTFE dielectric layer, a second superconductive layer and a stainless steel pipe from inside to outside; the production method comprises the following steps: coating the periphery of the core material with the first superconducting layer to prepare the inner conductor; coating the periphery of the inner conductor with a PTFE layer to form a medium wire core; longitudinally penetrating the strip-shaped second superconducting layer through a round hole mold with the inner diameter gradually reduced, and rolling into a hollow pipe with the outer diameter slightly smaller than the inner diameter of the stainless steel pipe; and synchronously pulling the hollow pipe into the stainless steel pipe, pulling the medium wire core into the hollow pipe in the stainless steel pipe, and completing cable assembly. Pulling the cable through a round hole die with the inner diameter smaller than the outer diameter of the stainless steel pipe for reducing extrusion; in inert gas or high vacuum, the internal stress of the cable is released through heating. The second superconducting layer lining is longitudinally covered in the stainless steel tube, so that the problem that the inner wall of the extremely long and thin tube is difficult to uniformly plate the superconducting layer is solved.
Owner:JIANGSU ANSHENGDA AEROSPACE TECH CO LTD

Tough niobium-titanium alloy material, preparation method and application of tough niobium-titanium alloy material to preparation of central conductor

The invention discloses a ductile niobium-titanium alloy material, a preparation method and application of the ductile niobium-titanium alloy material to preparation of a central conductor. The ductile niobium-titanium alloy material comprises, by weight, 44.5%-47.5% of Nb, 47.0%-50.0% of Ti, 1.0%-2.0% of Zr, 0.8%-2.0% of Mo, 0.2%-0.6% of V, 0.1%-0.3% of Al, 0.05%-0.12% of Si, 0.015%-0.025% of C, smaller than or equal to 0.035% of O, smaller than or equal to 0.01% of N, smaller than or equal to 0.25% of Fe + impurities and the balance Ti. The preparation process comprises the steps of double-vacuum melting, double-stage pre-homogenization heat treatment, gradient temperature control thermal machining and double-stage aging heat treatment, a fine grain beta matrix + dispersed alpha phase + nano MC carbide synergistic strengthening structure is obtained, and 3-10% of metastable beta phase is reserved. The central conductor made of the material has longitudinal and transverse absorption energy of not less than 180 J / cm and not less than 178 J / cm at-273 DEG C, longitudinal and transverse performance difference of not more than 8%, yield strength of not less than 780 MPa, salt spray corrosion resistance of not less than 1000 hours, and no obvious corrosion, and is suitable for manufacturing the central conductor of the low-temperature superconducting wire.
Owner:CHUZHOURUNHANDTECHNOLOGY CO LTD

Preparation method of Bi-2212 precursor powder capable of remarkably improving phase density of Bi-2201 nanometer stripes in Bi-2212 wire

The invention discloses a preparation method of Bi-2212 precursor powder capable of remarkably improving the phase density of Bi-2201 nanometer stripes in a Bi-2212 wire rod, and the Bi-2212 precursor powder capable of remarkably improving the phase density of the Bi-2201 nanometer stripes in the Bi-2212 wire rod is obtained by controlling the components of a precursor solution, adjusting in cooperation with a fine heat treatment method and controlling the molar ratio of Sr to Ca. According to the method disclosed by the invention, the components of the precursor solution are controlled, the large-size Bi-2201 phase is eliminated in combination with heat treatment, and the molar ratio of powder Sr to Ca is controlled to be within a proper range, so that the density of the nano stripe Bi-2201 phase in the Bi-2212 wire rod is improved, and the pinning performance of the Bi-2212 wire rod is favorably improved; the method is easy to operate, low in cost and high in controllability and operability, the cost performance of the Bi-2212 superconducting wire is improved, and rapid application of the Bi-2212 superconducting wire in the field of high-temperature superconducting magnets is further promoted.
Owner:NORTHWEST INSTITUTE FOR NONFERROUS METAL RESEARCH

Cryogenic coolant flow management for downhole superconducting cable

Systems and methods disclosed herein may comprise a bottom hole assembly; and a cable disposed in the wellbore. In examples, the cable may comprise a superconducting material configured to provide at least power to the bottom hole assembly; one or more liquid supply channels configured to supply a fluid to reduce temperature of the superconducting material; and one or more liquid return channels. Further, cryogenic liquid may be pumped through the liquid supply channels.
Owner:HALLIBURTON ENERGY SERVICES INC

Near-infrared optical response Nb3Sn superconducting wire and preparation method thereof

The invention belongs to the technical field of superconducting material processing, and discloses a near-infrared optical response Nb3Sn superconducting wire and a preparation method thereof. The Nb3Sn superconducting wire with near-infrared optical response comprises an optical functional coating, the optical functional coating is formed by embedding periodically-arranged plasmon metal micro-nano structures into a high-transparency dielectric substrate, the plasmon metal micro-nano structures are gold nanorod arrays or silver nanoring, the dielectric substrate is made of a SiO2-polyimide composite material, and the thickness of the dielectric substrate is 10-20 micrometers. The Nb3Sn superconducting wire with the near-infrared optical response has high absorptivity and photoelectric response in the near-infrared band, in-situ optical sensing of temperature, stress and magnetic field intensity can be synchronously achieved, the interface compatibility of the optical functional coating and the Nb3Sn superconducting basic wire is good, meanwhile, the influence of the added optical functional coating on the performance of the superconducting wire is small, and the service life of the superconducting wire is prolonged. And the method has a wide application prospect in the aspect of constructing an integrated optical-electric-magnetic multifunctional device.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Superconducting coil

To provide a superconducting coil that can easily improve its performance such as insulating characteristics.SOLUTION: A superconducting coil of an embodiment comprises a winding member in which a superconducting wire is wound around a winding axis. The superconducting wire has a superconducting wire body part, and an insulating coating layer formed of an insulating material so as to cover the surface of the superconducting wire body part. The insulating coating layer is formed on the surface of the superconducting wire body part so as to include at least a portion interposed between the turns of the superconducting wire.SELECTED DRAWING: Figure 2
Owner:KK TOSHIBA +1

Cooling facility and method

The invention relates to a facility for cooling a flow of cryogenic fluid comprising a first circuit for fluid to be cooled, for example liquid nitrogen and / or liquid oxygen, a cryogenic refrigerator with a cycle circuit, at least one heat exchanger providing heat exchange with the first circuit for fluid to be cooled and the cycle circuit of the refrigerator, the facility comprising a second circuit for fluid to be liquefied, for example nitrogen gas and / or oxygen gas, the second fluid circuit being in heat exchange with the cycle circuit of the refrigerator in at least one heat exchanger of the facility, the facility being configured so as to be switchable into a first cooling operating mode, in which the facility cools the first fluid circuit in order to cool a liquefied fluid, preferably in order to generate a quasi-isothermal transformation of said fluid, and a second liquefaction operating mode, in which the facility cools the second fluid circuit with a view to liquefying a gas flow.
Owner:LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE

A multi-barrier layer MgB2 superconducting wire and its preparation method

This invention belongs to the field of superconducting material processing technology and discloses a multi-barrier layer MgB2 superconducting wire and its preparation method. The wire consists of multiple barrier layers composed of Cu / Ni / Nb, with an outer copper layer as a stabilizer and Ni as a low-cost outer barrier layer. Ni and the outer copper layer diffuse into each other during hot extrusion to form a stable Cu-Ni compound. Nb foil is added within the Ni layer as an inner barrier layer to suppress the diffusion of small amounts of Ni-Mg. The multi-barrier layer of this invention significantly replaces Nb with Cu / Ni, substantially reducing raw material costs. The interdiffusion of the barrier layers during hot extrusion achieves metallurgical bonding, which is beneficial for uniform wire deformation during subsequent processing, reduces the possibility of barrier layer damage, and improves the wire's current-carrying capacity. The multi-barrier layer MgB2 superconducting wire of this invention exhibits a Jc of 5199~6271 A / mm² at 4.2K and 3T. 2 Its current-carrying capacity is significantly improved, and it has broad application prospects.
Owner:XIAN SUPERCONDUCTING WIRE TECHNOLOGIES CO LTD

Wire passing die holder device for wire inlet of wrapping head of cage strander

The utility model discloses a wire passing die holder device for a wire inlet of a wrapping head of a cage strander, and belongs to the technical field of cable production equipment. Comprising a hollow shaft, a supporting sleeve, a gland, a die holder and a wire passing die, the left end of the supporting sleeve is inserted into the right end of the hollow shaft, the wire passing die is inserted into the left end of the die holder, the die holder is inserted into the right end of the supporting sleeve, the gland is composed of a cylinder with internal threads and a cover plate integrally formed at the end of the cylinder, and external threads are arranged on the outer wall of the right end of the supporting sleeve. Cylinder threads of the gland are arranged at the right end of the supporting sleeve. According to the utility model, violent jumping generated in the circumferential direction of the inlet of the superconducting cable when the superconducting cable is wrapped by the steel belt can be avoided, so that the steel belt is smooth to take, the wrapped steel belt is tight and flat, the overlapping rate of the steel belt wrapped on the surface of the produced superconducting cable is ensured to meet the process requirement, and the production efficiency is improved. The superconducting cable is prevented from being damaged in the steel belt wrapping process, the product quality is improved, and the production efficiency of a machine table is also improved.
Owner:BAIYIN NONFERROUS CHANGTONG WIRE & CABLE CO LTD +1

A method for improving critical current of a REBCO superconducting layer

The application discloses a method for improving critical current of REBCO superconducting layer and relates to the technical field of superconducting materials.The method for improving critical current of REBCO superconducting layer comprises the following steps: REBCO superconducting tapes are annealed in a pure oxygen atmosphere, quenched to 20-25 DEG C, and then the surface silver layer is removed by a chemical method, after which the REBCO superconducting tapes are annealed in a mixed atmosphere of ozone and oxygen, and a protective layer is deposited, so that the critical current of the REBCO superconducting layer is finally improved.The carrier concentration of the REBCO superconducting tapes can be effectively controlled through the specific multi-step oxidation process, so that the REBCO superconducting tapes break through the under-doped state commonly existing in the prior art, reach the over-doped level, and then the critical current performance of the tapes is significantly improved.The method has simple process, high stability and high industrial feasibility, and can meet the demand of higher current-carrying capacity of REBCO tapes in key fields such as power transmission and high-field magnets.
Owner:SUPERMAG TECHNOLOGY (SHANGHAI) CO LTD

Electricity-hydrogen-carbon collaborative conveying, control and utilization system

The utility model discloses an electricity-hydrogen-carbon collaborative conveying, control and utilization system, and belongs to the technical field of energy conveying. The system comprises a control system and a conveying pipeline, wherein the conveying pipeline comprises a first pipe body, a second pipe body and a third pipe body which are sequentially arranged from inside to outside; the first pipe body forms a first channel for conveying liquid hydrogen, a second channel is formed between the first pipe body and the second pipe body, the second channel is filled with liquid nitrogen, and a third channel for conveying liquid carbon dioxide is formed between the second pipe body and the third pipe body; a power cable is further arranged in the second channel and used for transmitting electric power. Cold energy in the conveying pipeline is distributed in a uniform gradient mode, multi-stage gradient utilization of the cold energy can be achieved, and the comprehensive energy utilization rate of the liquid hydrogen, liquid carbon dioxide and electric power collaborative conveying system is increased.
Owner:ELECTRIC POWER PLANNING & ENG INST CO LTD

Stellarator with pre-aligned layered superconductor material

A stellarator comprising a non-planar magnetic field coil with a cable as well as a method for providing a cable for a non-planar magnetic field coil in a stellarator is presented. Additionally, a cable and a method for manufacturing a cable are presented. The cable comprises an inner section (100) comprising multiple layers of superconductor material (200), the multiple layers of superconductor material (200) having a first orientation (210, 210a, 210b, 210c), an outer section (300) surrounding the inner section (100), the outer section (300) having a cross-section (310) with a second orientation (320, 320a, 320b, 320c), wherein the outer section (300) comprises a first conductive material (410) which fixes the first orientation (210, 210a, 210b, 210c), wherein the first orientation (210, 210a, 210b, 210c) changes along a length (50) of the cable (40) with respect to the second orientation (320, 320a, 320b, 320c).
Owner:PROXIMA FUSION GMBH

Connector box for superconductor and superconductor assembly

The utility model provides a connector box for a superconducting conductor and a superconducting conductor assembly, the connector box comprises a splitter plate which is arranged in an inner cavity of a box body and extends along the length direction, and two sides of the splitter plate are respectively connected with side walls of the box body except a first side wall with a conductive wall; the first outer surface of the splitter plate and the inner wall surfaces of the other side walls of the box body jointly form a cooling medium flow channel, the second outer surface of the splitter plate, the other side walls of the box body and the first side wall jointly form a containing cavity, and a cable connecting part of the superconducting conductor is arranged in the containing cavity and connected between the splitter plate and the first side wall in a pressed mode; and the cooling medium flow channel is communicated with the accommodating cavity, so that the cooling medium in the accommodating cavity can be conveyed into the cooling medium flow channel. The superconducting conductor joint manufactured by the joint box realizes the low contact resistance effect, the cooling medium flows in the cooling medium flow channel to ensure the cooling effect, and quenching of the superconducting conductor joint can be avoided.
Owner:YAN CHAOYUAN (SHANGHAI) TECHNOLOGY CO LTD