10 results about "Plasma rotation" patented technology

Development of technologies for effectively suppressing edge localized modes (ELM), maintaining core plasma stability, controlling plasma rotation, adjusting edge transport barriers, achieving smooth transitions between different plasma regimes, minimizing error magnetic fields, sustaining plasma for long periods, stabilizing fusion power, controlling plasma impurities, and optimizing plasma-wall interactions simultaneously in tokamak fusion reactors. [Solution] We provide an adaptive edge-localized 3D magnetic field control system that organically links a real-time plasma state monitoring system, a 3D magnetic field response prediction model, a flexible 3D coil system, an adaptive control algorithm, a plasma regime transition management system, an integrated control interface, a high-precision magnetic diagnostic system, a fusion power control system, a plasma impurity control system, and a plasma-wall interaction optimization system.

The invention discloses a plasma rotation type large-area polycrystalline MPCVD diamond growth method, and relates to the technical field of microwave plasma chemical vapor deposition, and the method comprises the following steps: S1, setting environmental parameters of diamond growth in a reactor through a microwave feeder, sampling plasma state data in the reactor, and calculating the plasma state data; if the plasma is stably started, executing S2; and S2, the plasma state in the reactor is adjusted through the plasma regulator according to the plasma state data in the reactor, the coverage area of plasma discharge is increased, and then the growth area of the polycrystalline diamond is increased.

The invention discloses a novel plasma rotation groove cutting machine, and relates to the field of plate cutting, the novel plasma rotation groove cutting machine comprises a base, extension blocks are fixedly arranged on the two sides of the base, supporting columns are slidably arranged at the ends of the extension blocks, adjusting plates are fixedly arranged at the ends of the supporting columns, and cutting pieces are fixedly arranged at the ends of the adjusting plates; according to the novel plasma rotation groove cutting machine, accurate centering limiting is conducted on a workpiece through the limiting assembly, it is ensured that the workpiece is located at the correct position all the time, meanwhile, the horizontal state of the workpiece is adjusted, machining errors caused by inclination of the workpiece are eliminated, and therefore the machining precision is remarkably improved, and error accumulation is reduced.

The present disclosure provides a method including placing a substrate on a cylindrical electrode in a vacuum vessel, introducing at a first location in the vacuum vessel a first gaseous species capable of depositing a layer onto the substrate when formed into a plasma, and introducing at a second location in the vacuum vessel a second gaseous species capable of etching the substrate when formed into a plasma. The first location is closer to an entrance of the vacuum vessel at an unwind side than to the second location. The method further includes generating a plasma from the first gaseous species and the second gaseous species between the cylindrical electrode and a counter-electrode, rotating the cylindrical electrode to translate the substrate, and exposing a major surface of the substrate to the plasma. A layer is deposited on at least a portion of the major surface of the substrate and the substrate is etched, thereby forming nanostructures including at least one of nano-pillars, nano-columns, or continuous nano-walls including nano-pillars or nano-columns. An article is also provided, made by the method.

The invention belongs to the field of alloy material preparation, and particularly relates to a process for preparing spherical tantalum-tungsten alloy powder through plasma rotating electrode gas atomization. The technical problems that tantalum-tungsten alloy powder prepared through an existing method is uneven in particle size and poor in sphericity degree are mainly solved. Through component design optimization and preparation process optimization, metal raw materials are weighed according to the target tantalum-tungsten alloy chemical components in proportion, and a uniform cast ingot is obtained through smelting in a vacuum arc smelting furnace; and processing the cast ingot into an electrode bar with a smooth surface, and mounting the electrode bar on plasma rotating electrode atomization equipment. According to the process, a plasma torch is combined with a high-speed rotating electrode, so that the end face of a tantalum-tungsten rod is molten in an inert atmosphere to form a liquid film, the liquid film is atomized into fine liquid drops under the action of centrifugal force, and the fine liquid drops are rapidly solidified to form spherical powder; and finally, the powder is collected and screened, finished powder is obtained, the sphericity degree of the powder reaches 90% or above, particle size distribution is uniform, and the powder can be used in the fields of 3D printing, the aerospace industry and the like.

The invention relates to the technical field of plasma digital control, and provides a method and system for controlling plasma rotation, and the method comprises the steps: moving an electrode tip to a preset magnetic surface according to target window positioning data, and applying a deflection bias voltage after a vacuum condition is satisfied, so that the two magnetic surfaces form a radial potential difference, induce a radial electric field and generate a radial current; lorentz force distribution is determined in combination with magnetic field data, torque is generated, a momentum source area is constructed to drive plasma to rotate, and then an adjustment instruction is generated in combination with density parameters and the like to optimize the rotation state. According to the method, on the premise that the three-dimensional magnetic field configuration is complex and impurity sources are not added, plasma rotation and a boundary electric field are controlled, and boundary transport suppression and constraint performance improvement are achieved.

The application relates to the technical field of plasma digital control, and provides a method and system for controlling plasma rotation, which comprises the following steps: moving an electrode head to a preset magnetic surface according to target window positioning data, applying a deflection bias after satisfying a vacuum condition, making two magnetic surfaces form a radial potential difference, inducing a radial electric field and generating a radial current; combining magnetic field data to determine a Lorentz force distribution, generating a moment and constructing a momentum source area to drive plasma rotation; and combining density parameters to generate an adjustment instruction to optimize the rotation state. The method can control plasma rotation and a boundary electric field under the premise of a complex three-dimensional magnetic field configuration without increasing impurity sources, and realizes boundary transport inhibition and constraint performance improvement.

To provide an electrode member operation mechanism for a plasma rotary electrode method which can safely and easily move an electrode member not only to a tip side but also to a rear end side.SOLUTION: A plurality of rotary rollers 11 are arranged around an electrode member 1 so that those outer peripheral surfaces come in contact with an outside surface of the electrode member 1 and support the electrode member 1. Each of the rotary rollers 11 is rotatably provided with a rotary axis 11a parallel with a central axis as a center so as to rotate the electrode member 1 around the central axis. Moving means 12 is operably provided to switch an advance mode of moving the rotated electrode member 1 from a rear end 1b side to a tip 1a side in the length direction of the electrode member 1, and a retreatable mode of being capable of moving the electrode member 1 from the tip 1a side to the rear 1b side in the length direction.SELECTED DRAWING: Figure 1

The present invention discloses a rotary sweeping plasma jet rock-breaking drill bit and drilling method, belonging to the field of drilling engineering technology. The method comprises a plasma jet drill bit body, a conductive slip ring, a hollow shaft, and a motor. The plasma jet drill bit body comprises an anode electrode, within which a discharge chamber is disposed. The end of the anode electrode facing the conductive slip ring is fixedly connected to an anode base, and the radially inner side of the anode base is insulated from a cathode base, within which a cathode electrode is disposed. The end of the discharge chamber, away from the cathode electrode, penetrates the jet end of the anode electrode to form an anode nozzle. The central axis of the discharge chamber forms an inclined angle with the central axis of the plasma jet drill bit body. During the drilling process, the plasma ejected from the anode nozzle rotates in a circle to form a dynamic jet, forming a circular ablation trajectory on the rock surface and increasing the rock-breaking aperture.

There is provided a method for separating an input feedstock using thermal plasma to obtain a processed feedstock and / or remove one or more hazardous compounds. There is also provided system for same comprising a plasma vortex reactor and a separator. There is also provided a method for forming a product from an input or processed feedstock using thermal plasma. There is also provided a system for same comprising a blender and a plasma rotary furnace