76results about "Superconductor devices" patented technology

This invention relates to a high-temperature superconducting cable, comprising: a metal skeleton, high-temperature superconducting tape, impregnated filler, a conductive metal layer, and a metal armor layer; a central cooling channel is provided in the center of the metal skeleton; the high-temperature superconducting tape is stacked into strands, with the entire strand spirally wound tightly against the metal skeleton; a conductive metal layer is wound around the outer side of the high-temperature superconducting tape, and a metal armor layer is also provided; the impregnated filler is filled into the gaps between each strand of the high-temperature superconducting tape using a vacuum pressure impregnation process. Compared with the prior art, in this invention, the high-temperature superconducting tape is stacked into strands and wound on the metal skeleton, and the neatly stacked tape is less susceptible to mechanical damage; there are gaps between the strands of the high-temperature superconducting tape, and the size of the gaps can be changed when the cable is bent, so the high-temperature superconducting tape is less likely to be damaged by excessive stress when the cable is bent; after the cable is bent, the gaps between the strands of the high-temperature superconducting tape can be filled by vacuum pressure impregnation, improving the thermal conductivity and mechanical strength of the cable.

The application discloses a high-temperature superconducting conductor and a preparation method thereof, and relates to the technical field of high-temperature superconductivity, wherein the conductor comprises an inner pipe body and an outer pipe body arranged coaxially, a liquid nitrogen convection cooling zone is formed in the inner pipe body, and a vacuum heat insulation cavity is formed between the inner pipe body and the outer pipe body. By forming the liquid nitrogen convection cooling zone in the inner pipe body and the vacuum heat insulation cavity between the inner pipe body and the outer pipe body, the liquid nitrogen can directly soak the superconducting cable for efficient heat exchange, the vacuum heat insulation cavity effectively blocks the radial conduction of environmental heat to the inner pipe body, and the heat load of the refrigeration system is greatly reduced; by electrically connecting the low-temperature end electrode and the superconducting cable and connecting the room-temperature end electrode and the low-temperature end electrode in series to form a loop, the room-temperature end electrode is avoided from directly contacting the superconducting cable, the axial heat leakage along the electrode is reduced, and one end of the liquid nitrogen cooling pipe is communicated with the inner pipe body and the other end of the liquid nitrogen cooling pipe extends to the outside through the outer pipe body, so that the stable supply and the sealing reliability of the liquid nitrogen are ensured.

This invention discloses a method for preparing iron-based superconducting materials, comprising: according to the chemical formula Ae 1‑x A x+a Fe 2‑b As 2+c The mixture is prepared and thoroughly mixed to obtain unreacted raw starch. Ae is an alkaline earth metal element, A is an alkali metal element, 0.15 ≤ x ≤ 0.8, 0

The application belongs to the technical field of superconducting cables, and discloses a superconducting cable device containing a liquid nitrogen communication device and a working method. The terminal comprises a superconducting cable conductor, two terminal bodies, and the two terminal bodies are connected to two ends of the superconducting cable conductor. The terminal body comprises an outer Dewar for accommodating liquid nitrogen and the superconducting cable conductor. The outer Dewars of the two terminal bodies are connected to each other in a sealed manner through a cable conductor Dewar pipeline. The superconducting cable conductor extends along a preset laying path and has a height difference in different sections. The liquid nitrogen communication device is arranged at the cable terminal, the cable Dewar pipeline along the line, and the interval or the height difference change point. The traditional liquid nitrogen circulation mode faces challenges when the superconducting cable conductor has a drop along the laying path. In view of the characteristics, the core structure design of the terminal body, the liquid nitrogen communication device, and the gas-liquid double communication pipeline fundamentally solves the technical pain points of slow exhaust, difficult liquid supplement, and large pressure fluctuation when the existing superconducting cable device loses superconductivity.

This invention provides a method for extending heat-treated Nb3Sn superconducting wires. The method involves preparing a superconducting joint at the connection point of a heat-treated first Nb3Sn superconducting wire and a heat-treated second Nb3Sn superconducting wire through a secondary sintering process, thereby extending the heat-treated Nb3Sn superconducting wire. The second Nb3Sn superconducting wire is a heat-treated superconducting wire, and the superconducting joint is a sheet structure comprising a stainless steel shell, an Nb layer, an Nb3Sn superconducting sheet, the first Nb3Sn superconducting wire, and the second Nb3Sn superconducting wire. The stainless steel shell is pressed into a sheet structure under pressure, the Nb layer is located inside the stainless steel shell, and the Nb3Sn superconducting sheet is formed by rapid sintering of nano-Nb powder and nano-Sn powder. The first and second Nb3Sn superconducting wires are superconductingly connected through the Nb3Sn superconducting sheet.

The application provides a high-heat-dissipation, high-flexibility and high-isotropy superconducting bundled wire which is composed of a buckle center framework, superconducting tapes and an external protective sleeve. The buckle center framework is used in the technical scheme, the unit buckle rings in the buckle center framework are buckled to each other through buckling and have a movable allowance between each other, so that the buckle center framework can be bent without plastic deformation of the metal framework, strain accumulation of the superconducting tapes caused by bending is avoided, and the limit bending radius is small. The gap on the wall of the buckle center framework can accelerate the cooling efficiency of the bundled wire during pre-cooling of the cooling medium, and allows the cooling medium to flow in the radial and axial directions during formal operation of the bundled wire, so that the heat exchange efficiency of the superconducting tapes is increased.

A linear material protection member includes a plurality of blocks that protects a linear material including a superconducting tape wire material. A component constituting a bottom portion of a first block includes a first side disposed along one of a first side wall portion and a second side wall portion of the first block, a second side disposed on an opposite side of the first side, and a central region disposed between the first side and the second side. In addition, the component includes a second wire holding portion and a third wire holding portion formed along the first side in a state of being able to sandwich a first wire holding portion of the first component, and a screw hole that is disposed in the central region and is formed to penetrate the component in a thickness direction.

A superconductor cable (21) for a superconductor cable assembly (22), a superconducter cable assembly, and a system (100) for preventing damage to at least one superconductor cable assembly is provided. The superconductor cable may comprise: a superconductor region (19), the superconductor region (19) comprising: high temperature superconductor material, optionally high temperature superconductor tapes (23), and a first metallic stabilizer material (24); a layer of ohmic heating material (25) at least partially surrounding the superconductor region (19).

The present application relates to the technical field of electronics. Provided are a memory array and a manufacturing method therefor, and a memory and an electronic device, which are used for solving the problem of a capacitor structure in a memory having a low density of integration. The memory array comprises: a substrate, and a capacitor unit arranged on the substrate. The capacitor unit comprises a first electrode, a second electrode and a third electrode, wherein the first electrode, the second electrode and the third electrode all extend in the thickness direction of the substrate, the first electrode is arranged around the second electrode, and the second electrode is arranged around the third electrode. The capacitor unit further comprises a first dielectric layer and a second dielectric layer, wherein the first dielectric layer is arranged between the first electrode and the second electrode, and the second dielectric layer is arranged between the second electrode and the third electrode. The memory array is used for improving the density of integration of a capacitor structure.

A method for preparing a photocurable high-temperature superconducting spiral includes: S1, constructing an additive manufacturing system; S2, building model slice data; S3, preparing immiscible YBCO ceramic precursor slurry and sacrificial slurry; S4, connecting the YBCO ceramic precursor slurry and sacrificial slurry to the additive manufacturing system, wherein the YBCO ceramic precursor slurry encapsulates the sacrificial slurry during extrusion; S5, importing the model slice data into the additive manufacturing system and controlling the system to move according to a preset program to prepare the target spiral; S6, curing the spiral to obtain a three-dimensional spiral green body with a complete 3D sacrificial material network embedded inside; S7, degrading the sacrificial material to leave cavity channels; S8, debinding the three-dimensional spiral by performing a heat treatment regime to 500°C at a preset heating rate; S9, sintering the debinded three-dimensional spiral to finally obtain a three-dimensional interconnected spiral channel network.

The disclosure belongs to the technical field of superconducting wires, and discloses a CuNb composite rod for a low-loss superconducting wire and a manufacturing method therefor. The CuNb composite rod has a multi-level structure specific arranged by Sn rods, CuNb single-core rods and Cu tube, where each CuNb single-core rod is closely in contact with a maximum of four CuNb single-core rods, and a minimum of one Sn rod. The atomic ratio of Nb / Sn is 2.7-3.1, of Sn / (Sn + Cu) is 0.23-0.37; the volume ratio of Nb is 45-59%, of Sn is 22-27%. The Cu tubes are distributed between the close-packed CuNb single-core rods and Sn rods, thus reducing mutual contact between the Nb rods, and enhancing the overall heat conduction capability of the wire. While reducing hysteresis losses, the present disclosure ensures that Nb3Sn superconducting wire has a relatively high critical current-carrying capacity and a practical application value.

A method for manufacturing a superconducting wire includes: preparing a superconducting wire to be cut having a first main surface and a second main surface opposite to the first main surface; and transporting the superconducting wire to be cut, along a longitudinal direction of the superconducting wire to be cut, by a first transport mechanism and a second transport mechanism which are disposed to be spaced apart from each other. The superconducting wire to be cut is supported, at the first main surface, by a pulley disposed between the first transport mechanism and the second transport mechanism. The method for manufacturing the superconducting wire further includes cutting the superconducting wire to be cut, by irradiating the second main surface at a portion of the superconducting wire to be cut supported by the pulley with a laser when the superconducting wire to be cut is transported.

This invention relates to the field of superconducting tape processing technology, specifically disclosing a superconducting tape joint with stable resistance and its preparation method. The tape joint sequentially comprises: a substrate layer, a buffer layer, a superconducting layer, an interface layer, a welding layer, and a stabilizing layer. The interface layer and the stabilizing layer are disposed on the side of the substrate layer away from the buffer layer, and the interface layer and the stabilizing layer are in a fully encapsulated state. The main phase of the superconducting layer is [missing information - likely a specific phase or property], with a value of 0-0.1. The superconducting layer also includes a pinning defect phase, which includes BaZrO₃ nanoparticles. The interface layer is a LaNiO₃ film. This invention replaces the Ag layer of the interface layer with a LaNiO₃ layer and introduces BaZrO₃ nanoparticles into the superconducting phase, improving the overall performance. Compared with traditional methods, the change in initial resistance is minimal, but the thermal cycling performance, including resistance shift and lifetime, is greatly optimized.

This invention discloses a method for preparing NbTi / Cu superconducting wires based on copper ratio testing, relating to the field of superconducting wire processing technology. The method includes: obtaining a preliminary NbTi / Cu superconducting wire; stretching the wire and collecting real-time data on the length and total weight of the stretched wire; plotting a total weight-length variation curve, calculating a linear density-length variation curve, and calculating a copper ratio-length variation curve; determining a critical point, removing portions that do not meet the copper ratio requirements, and performing subsequent twisting and final stretching processes to obtain NbTi / Cu superconducting wires with a qualified copper ratio. This application improves the efficiency and accuracy of preparing wires with a qualified copper ratio by real-time data collection of the stretched wire length and total weight, sequentially plotting and calculating the variation curves of total weight, linear density, and copper ratio versus length, and determining the critical point.

A superconducting wire manufacturing device capable of reinforcing the adhesive strength between a substrate and a buffer layer is provided. [Solution] The present invention relates to a superconducting wire manufacturing apparatus, and relates to a superconducting wire manufacturing apparatus that can perform a predetermined pretreatment process before a buffer layer is vapor-deposited on a substrate to reinforce the adhesion between the substrate and the buffer layer.

This invention discloses a superconducting cable tube shrinking fixture and its forming process. Mounted on a lathe, the lathe includes a chuck, an apron, and a tailstock. The superconducting cable tube shrinking fixture, mounted on the apron, includes a frame-shaped support with two symmetrically arranged tube shrinking rollers inside. The space between the two rollers allows the superconducting cable to pass through. The frame-shaped support also includes an adjusting block for adjusting the distance between the two rollers. The forming process includes steps such as passing the superconducting cable through the two rollers. This invention has a simple structure, is easy to use, and is low in cost. It effectively meets the tube shrinking requirements of superconducting cables, and the fixture can be reused multiple times, offering high efficiency.

This invention belongs to the field of fusion device technology and discloses a prefabricated installation method for a superconducting feeder system of a fusion device. The method includes: digital pre-assembly; pre-processing the superconducting feeder system assembly and transporting it to the fusion device facility; installing a walking mechanism; transporting and adjusting the superconducting feeder system assembly to the corresponding installation position on the axis of the main unit hall, then moving it towards the center of the main unit, aligning the corrugated pipe with the Dewar window connector, inserting the internal feeder into the corrugated pipe to form a corrugated pipe segment, overlapping the superconducting joints between adjacent corrugated pipe segments and feeder segments, and positioning the superconducting feeder system onto the positioning support; constructing a clean area; connecting the superconducting joints between adjacent corrugated pipe segments and feeder segments and installing the outer pipe; and dismantling the integrated assembly and installation platform for the fusion device's superconducting feeder system. This invention offers a short on-site installation cycle, a controllable clean environment, low frequency of X-ray inspection, and low on-site operational risks, ensuring installation quality and accuracy.

This invention belongs to the field of superconducting wire technology and discloses a high-performance, low-loss NbTi superconducting wire and its preparation method. First, an NbTi rod, an Nb cylinder, and a copper tube are assembled to obtain an NbTi / Nb / Cu composite rod. After removing the surface copper, an NbTi / Nb composite rod is obtained. This NbTi / Nb composite rod is then inserted into a drilled Cu alloy ingot and fitted with a first oxygen-free copper tube to obtain a hexagonal composite rod. Finally, this hexagonal composite rod is arranged in a second oxygen-free copper tube, the gaps are filled, and then subjected to multiple drawing passes, multiple aging heat treatments, and twisting to obtain the NbTi superconducting wire. This method effectively improves the problem of poor core wire deformation in conventional NbTi / Cu superconducting wires, increases the critical current density of the wire, and reduces AC losses, meeting the requirements for superconducting magnets in nuclear fusion devices and other applications.

The utility model discloses a kind of star imitator CICC superconducting joint structure, for the end of multiple conductors is electrically connected, each conductor includes conductor core and the conductor armor covered in the outer periphery of conductor core. Superconducting joint structure includes sealing shell and the connecting assembly fixed in sealing shell;The end of each conductor removes conductor armor, and conductor core end part is inserted into sealing shell from one end of sealing shell, and is electrically connected each other in sealing shell by connecting assembly. Multiple through holes are provided in one end of sealing shell, and each conductor core end part is inserted into sealing shell from corresponding one through hole, and the conductor armor end part of each conductor surrounds corresponding one through hole, abuts and is fixedly sealed in the end face of one end of sealing shell. The superconducting joint structure has the advantages of simple structure, fixed conductor is quickly convenient, and good sealing performance.

The application belongs to the technical field of superconducting material processing, and discloses a NbTi superconducting wire with high corrosion resistance and a preparation method thereof. The inner core structure of the NbTi superconducting wire is composed of a NbTi core, a Nb cylinder and a CuNiCr alloy tube, and is matched with a multi-stage composite structure of an acetal paint layer, an aluminum-magnesium alloy layer, a tinned metal braided layer and a PTFE outer layer. The wire can be used in a Cl ‑ The NbTi superconducting wire can be used in a Cl The inner core structure of the NbTi superconducting wire has diffusion barrier and long-term self-passivation performance, and the outer layer is coated with multiple physical-chemical composite barriers, so that cracks are inhibited, penetration is delayed, and interface corrosion is avoided, and long-term stability of the overall structure can be realized.

This invention provides a superconducting wire, belonging to the field of superconducting material processing and application. The superconducting wire, from the outside in, consists of a magnetic buffer assembly, a copper substrate, a superconducting core wire, and a thermal buffer assembly. The thermal buffer assembly is composed of multiple high-specific-heat core wires and is located at the center of the copper substrate. The magnetic buffer assembly covers the outer surface of the reference superconducting strand. The high-specific-heat core wires absorb Joule heat generated by magnetic flux movement at low temperatures, while the magnetic buffer assembly reduces the local actual magnetic field of the superconducting core wire in low-field regions. Together, they achieve full-condition magnetic flux jump suppression. This invention constructs an electromagnetic-thermal coupling numerical model, using the radial position of the high-specific-heat core wire, the mass ratio of high-specific-heat material to copper, and the thickness of the magnetic buffer assembly as design variables for parametric simulation. The parameter combination with the fewest magnetic flux jumps is selected as the optimal structural parameters, and the optimal superconducting strand is fabricated accordingly. This invention can significantly improve the magnetocaloric stability of high-field superconducting strands.

The embodiments described herein relate to apparatuses and methods for mitigating pressure drop in high temperature superconductor (HTS) cables while also addressing challenges associated with traditional HTS cable formers such as structural flexibility and mechanical integrity. The apparatus comprises a former made of a fiber-reinforced polymer composition, configured to define a shape, with a high temperature superconductor material disposed on and around the former. In some embodiments, the fiber-reinforced polymer composition has a ratio of yield strength to Young's modulus of about 0.02 or greater, allowing for formers with diameters of 20 mm or greater to exhibit a bend diameter of 2 m or less.

In a superconducting coil, the resistance between turns is reliably increased while enabling commutation between superconducting wires within the bundle, thereby suppressing the excitation delay of the coil magnetic field. [Solution] The bundled superconducting wire 15 comprises a superconducting laminate L in which a superconducting layer 4 is formed on a metal substrate 2 via an intermediate layer 3, the periphery of which is covered with a stabilizing layer 5 made of metal, forming a tape shape, and a plurality of superconducting wires 1 bundled together so that the tape surfaces face each other, and an insulating material layer 14 having insulating properties formed on at least one of the front and back tape surfaces which are the outer surfaces of the wire when the bundled plurality of superconducting wires 1 are treated as a single wire.

This invention belongs to the field of wire processing and provides a method for preparing superconducting enameled wire. The method involves uniformly heating the core wire and then performing multiple alternating micro-powder coating and varnish coating processes. After acquiring thermal infrared images at each stage, the presence of localized accumulation is determined based on the pre-coating and post-coating thermal images. Increasing the micro-powder coating thickness while decreasing the varnish coating thickness in the next alternating coating stage allows for rapid identification of localized accumulation caused by thermocapillary convection. Reducing the varnish coating thickness in the next stage decreases the acetal varnish thickness, thereby reducing the varnish layer and the shrinkage stress during acetal varnish curing. This reduces the tendency of adjacent micro-powder particles to be pushed towards edges or defects, preventing the aggregation of adjacent micro-powder particles and mitigating the problem of localized aggregation exacerbated by the Maragoni effect. Simultaneously, it prevents the false detection of small amounts of sodium bismuth titanate nanopowder sputtering in the thermocapillary channels.

Described is a cable comprising a plurality of high temperature superconductor (HTS) components, a plurality of electrically conductive segments extending along a length of the cable, each of the plurality of electrically conductive segments comprising one of the plurality of HTS components, and an electrically insulating material arranged between adjacent ones of the plurality of electrically conductive segments.

According to an embodiment, an apparatus includes a first contact block configured to be coupled to a first superconductive phase of a superconducting cable, the first contact block defining an opening through which at least a portion of the superconducting cable is configured to pass. The apparatus further includes a second contact block configured to be coupled to a second superconductive phase of the superconducting cable that is coaxial with and disposed within the first superconductive phase, the second contact block defining an opening through which at least a portion of the superconducting cable is configured to pass. An enclosure encircles the first contact block and the second contact block and defines a flow path for a cryogen.