RussianPatents.com
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Anode of arc plasma generator and arc plasma generator. RU patent 2504931. |
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FIELD: electricity. SUBSTANCE: arc plasma generator with multistage gas supply contains cathode and anode. Anode is made of at least two sections, at that any two adjoining anode sections are connected electrically to each other. Between any two adjoining anode sections there are gas guide holes which are tangential holes or holes ensuring gas flow which direction of velocity has tangential and axial components at the same time. EFFECT: increasing operational reliability of arc plasma generator. 9 cl, 8 dwg
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Method to process surface of at least one structural element by means of elementary sources of plasma by electronic cyclotron resonance / 2504042 At least one rotary motion is given to a structural element or structural elements (1) relative to at least one row of fixed elementary sources (2) arranged as fixed into a line. The row or rows of elementary sources (2) arranged within a line are placed in parallel to the axis of the structural element or axes of rotation of structural elements. |
Apparatus for compressing plasma and method of compressing plasma / 2503159 Disclosed are versions systems for compressing plasma and methods of compressing plasma in which plasma pressure higher than the ultimate strength of solid material can be achieved by injecting plasma into funnel of molten metal in which plasma is compressed and/or heated. |
Method for probe diagnosis of plasma and apparatus for realising said method / 2503158 Method involves placing a probe in plasma, applying discrete stepped voltage pulses to the probe, recording the voltage versus current curve, measuring potential of the plasma space; voltage of each next step in a pulse is greater than that of the previous step; steps are formed with time intervals between them during which potential on the probe is set equal to the potential of the plasma space. The duration of each step and time intervals between the steps is set not shorter than the restoration time of plasma quasi-neutrality. The apparatus for probe diagnosis of plasma has a power supply, a probe, a discrete stepped voltage pulse generator and a measuring unit, a trigger pulse generator connected to the discrete stepped voltage pulse generator. The discrete stepped voltage pulse generator consists of a switching unit, constant emf sources and a microprocessor which controls the switching unit, and the measuring unit includes a set of switched resistors. |
Plasma generator (versions) / 2503079 In a plasma generator according to the first version of realisation, comprising a spiral coil, placed inside a conducting screen, the inner surface of which has a shape close to cylindrical one, besides, the space between turns of the coil and between the coil and the screen is filled with a dielectric, the coil is made as flat, the distance from the plane of the coil to the outer surface of the dielectric is less than the doubled thickness of the coil, and the distance from the plane of the coil to the base of the inner surface of the screen is more than the doubled distance from the plane of the coil to the outer surface of the dielectric. In the plasma generator in accordance with the second version of realisation the coil is made flat, the screen is made in the form of a ring, the axis of which is perpendicular to the plane of the coil, the edge of the ring facing the volume, in which it is required to create plasma, is closed with the dielectric. In the plasma generator according to the third version of realisation the screen is electrically connected to one of the ends of the coil, and the dielectric permeability of the dielectric is within 2.5 - 50. |
Plasma cathode / 2502238 Plasma cathode includes hollow holder 1 with end walls 2, 3 and feedthrough holes 4, 5 for working medium, inside which emitter 6 is arranged, between which barrier layer 7 of chemically passive material is located; between inner surfaces 8 of the hollow holder and outer surfaces 9 of the emitter there are gaps 10, 10a, 10b, between which screen 11 is arranged. Surfaces of the screen are coated with barrier layers 7a. |
Device to excite high-frequency flare discharge / 2499373 Device to excite a high-frequency flare discharge comprises a dielectric tube installed in a slot of a dielectric flange, in the axial hole of which there is a hollow power electrode so that its dead sharpened end is arranged inside the cylindrical dielectric tube, and the other end of the power electrode is arranged outside the limits of the dielectric tube and is electrically connected with the high-voltage electrode of the high-frequency generator. The end of the power electrode arranged outside the limits of the dielectric tube is equipped with two nozzles. The first nozzle arranged on the external end of the power electrode is connected with the system of water supply. The second nozzle aligned perpendicularly to the axis of the power electrode is connected with a sewage system. On the power electrode radially, at the sharp angle to its axis, there is an additional electrode, the end of which is sharpened and directed towards the area of contact of the dielectric tube and the external electrode, which with its concave side covers a part of the external surface of the dielectric tube. The external electrode is installed on the first end of the bar, capable of displacement in parallel to the axis of the dielectric tube, and the second end of the bar, via an electric insulating insert fixed on it, is connected with a drive. |
Coaxial magnetoplasma accelerator / 2498542 Coaxial magnetoplasma accelerator contains solenoid, cylindrical titanium barrel, supply circuit. Titanium barrel contains fused jumpers, titanium wires, titanium central electrode, cylindrical insert made of copper. The central electrode body is made from magnet material and overlaps fused jumper location area per 40-50 mm. Copper insert is made as longitudinal copper buses of circular section. Length of copper buses is equal to length of titanium barrel and square area of the surface is equal to 30% of the square area of titanium barrel. |
Apparatus and method for simulating magnetohydrodynamics / 2497191 Magnetohydrodynamic simulation device includes a plasma container holding a first ionisable gas, a first electrical loop placed next to the plasma container, having a space interval, electrical contacts on the first and second sides of the interval, a first substance having at least low magnetic susceptibility or high conductivity. The first electrical loop can be composed of one or more wire loop coils. In such cases, electrical contact is established through ends of the coil wires. The magnetohydrodynamic simulation device includes an electroconductive first coil wound around the plasma container and through the first electrical loop. |
Generator of wide-aperture flow of gas-discharge plasma / 2496283 Generator of wide-aperture flow of gas-discharge plasma includes hollow cathode with base, which is installed coaxially into hollow insulation and covered with cover plate so that height of cavity of hollow cathode is determined with the ratio of 3λ<L<5λ, where λ - length of free passage of electron in flow of gas-discharge plasma. Bases of anode and cathode are perforated, thickness of insulation between hollow anode and hollow cathode is determined by the ratio of 0.5d<h<d, where d - diameter of coaxially located holes in bases of anode and cathode. |
Flow control system with plasma actuator, method of its use for control flowing over high-speed carrier weapons compartment / 2489315 Set of invention relates to airborne carrier flight control means. Proposed system comprises plasma actuator arranged at aircraft surface, AC voltage source to generate AC voltage signal and device to control AC voltage signal output to plasma actuator. Said plasma actuator is arranged to stay ahead of recess in compliance with free airflow direction. Proposed method consists in that actuator causes air ionisation and develops forced flow to cause flow separation in boundary layer over said actuator and deflection of said separation layer behind actuator from said recess. |
Central solenoid for resistive plasma heating / 2245004 Proposed central solenoid used as tokamak inductor and easily dismounted from central column has four conductor layers with inner cooling ducts. Each layer is made separately with four entrances in each layer. All sixteen conductors are connected in series and their junctions are disposed on butt-end surfaces of solenoid switching blocks. Insulated layers of conductors are inserted one into other. |
Method of control of power of spacecraft power plant and device for realization of this method / 2249546 Proposed method includes stabilization and change of power of power plant through regulation of consumption of engine working medium. When power of solar battery drops to level of maximum permissible power consumed by engine, consumption of working medium is changed in such way that power of solar battery might change in saw-tooth pattern and vertices of saw might be in contact with line of maximum probable power of solar battery. Device proposed for realization of this method includes matching voltage converter whose outputs are connected with engine electrodes and inputs are connected with solar battery busbars, current and voltage sensors showing solar battery voltage and power sensor connected with current and voltage sensors. Comparator connected with power sensor is also connected with controllable power setter and initial power setter. Outputs of controllable power setter are connected with comparator and comparison circuit whose input is connected with power sensor output. Output of comparison circuit is connected with amplifier-regulator of consumption of working medium. |
Gas-discharge plasma cathode / 2250577 Electrode set of plasma cathode has hollow cylindrical cathode with slit-shaped output aperture and hollow anode. Height of the latter depends on distance between cathode aperture and control grid. Ratio of anode height and control grid transverse incision is greater than unity. Cathode aperture width depends on thickness of spatial charge cathode layer. |
Method of predicting variations of parameters of steady-state plasma engine / 2251090 Method comprises short-term service life testing, measuring liner sizes of the erosion profiles of the walls of discharging chamber, predicting new erosion profiles, measuring the area of erosion, determining dependence between the measurements of thrust and total area of erosion, and determining proportionality coefficient between the thrust and total erosion area. |
Microwave plasmatron / 2251824 Proposed microwave plasmatron has flash chamber whose inner conductive surface bears one or more annual radial slots that can be made in the form of short-circuited lengths of coaxial line with conducting walls, their depth being equal to quarter-wavelength of generator electromagnetic oscillations. |
Microwave plasmatron / 2251824 Proposed microwave plasmatron has flash chamber whose inner conductive surface bears one or more annual radial slots that can be made in the form of short-circuited lengths of coaxial line with conducting walls, their depth being equal to quarter-wavelength of generator electromagnetic oscillations. |
Microwave plasmatron / 2251824 Proposed microwave plasmatron has flash chamber whose inner conductive surface bears one or more annual radial slots that can be made in the form of short-circuited lengths of coaxial line with conducting walls, their depth being equal to quarter-wavelength of generator electromagnetic oscillations. |
Installation and method for production of nanodispersed powders in microwave plasma / 2252817 The installation comprises production-linked: microwave oscillator 1, microwave plasmatron 2, gas-flow former 3, discharge chamber 4, microwave radiation absorber 5, reaction chamber 6, heat-exchanger 7, filter-collector of target product (powder) 8, device for injection of the source reagents in a powdered or vapors state into the reaction chamber, the installation has in addition a device for injection of the source reagents in the liquid-drop state, it has interconnected proportioner 9 in the form of cylinder 10, piston 11 with gear-screwed electric drive mechanism 12 adjusting the speed of motion of piston 1, evaporative chamber 13 with a temperature-controlled body for regulating the temperature inside the chamber that is coupled to the assembly of injection of reagents 14 in the vaporous state and to the assembly of injection of reagents 15 in the liquid-drop state, injection assembly 14 is made with 6 to 12 holes opening in the space of the reaction chamber at an angle of 45 to 60 deg to the axis of the chamber consisting at least of two sections, the first of which is connected by upper flange 16 to the assemblies of injection of reagents, to discharge chamber 4, plasmatron 2, with valve 17 installed between it and microwave oscillator 1, and by lower flange 18, through the subsequent sections, it is connected to heat exchanger 7, the reaction chamber has inner water-cooled insert 20 rotated by electric motor 19 and metal scraper 21 located along it for cutting the precipitations of powder of the target product formed on the walls of the reaction chamber, and heat exchanger 7 is made two water-cooled coaxial cylinders 22 and 23, whose axes are perpendicular to the axis of the reaction chamber and installed with a clearance for passage of the cooled flow, and knife 24 located in the clearance, rotating about the axis of the cylinders and cleaning the working surfaces of the cylinders of the overgrowing with powder, powder filter-collector 8 having inside it filtering hose 25 of chemically and thermally stable material, on which precipitation of powder of the target product from the gas flow takes place, in the upper part it is connected by flange 26 to the heat exchanger, and in the lower part the filter is provided it device 27 for periodic cleaning of the material by its deformation, and device 28 with valve 29 for sealing the inner space of the filter. The method for production of nanodispersed powders in microwave plasma with the use of the claimed installation consists in injection of the source reagents in the flow of plasma-forming gas of the reaction chamber, plasmochemical synthesis of reagents, cooling of the target product and its separation from the reaction chamber through the filter-collector, the source reagents are injected into the flow of plasma-forming gas, having a medium-mass temperature of 1200 to 3200 K in any state of aggregation: vaporous, powdered, liquid-drop or in any combination of them, reagents in the powdered state are injected in the form of aerosol with the gas-carrier into the reaction chamber through injection assembly 35 with a hole opening into the space of the reaction chamber at an angle of 45 to 60 deg to the chamber axis, reagents in the liquid-drop or vaporous state are injected into the reaction chamber through injection assemblies 15 or 14, respectively, in the form of ring-shaped headers, the last of which is made with 6 to 12 holes opening into the space of the reaction chamber at an angle of 45 to 60 deg to the chamber axis, each of them is blown off by the accompanying gas flow through the coaxial ducts around the holes, at expenditure of the source reagents, plasma-forming gas, specific power of microwave radiation, length of the reaction zone providing for production of a composite system and individual substances with preset properties, chemical, phase composition and dispersity. |
Radiation source built around plasma focus with improved switching-mode supply system / 2253194 High-energy photon source has electrode pair 8 for producing plasma pinch disposed in vacuum chamber of plasma pinch generating device 2. Chamber holds working gas incorporating noble cushion gas and active gas chosen to afford generation of desired spectral line. Switching-mode power supply 10 generates electric pulses of sufficiently high voltage to build up electrical discharge between electrodes. This discharge produces high-temperature plasma pinches of high density in working gas which generate radiation in spectral line of power supply. Electrodes are of coaxial configuration with anode on axis. Active gas is introduced through hollow anode. |
Pulse plasma accelerator and plasma acceleration method / 2253953 Device has two electrodes, dielectric blocks, made of special material, discharge channel with open end portion, walls of which are formed by surfaces of electrodes and dielectric blocks, energy accumulator, current feeds, connecting electrodes to energy accumulator, which together with electrodes and accumulator form an external electric circuit, isolator, mounted between electrodes near end portion of discharge channel, opposite to open end portion, and charge initiation device. Characteristics of external electrical circuit of accelerator are selected from condition : 2≤C/L, where C - electric capacity of external electric circuit in micro-farads, and L - inductiveness of external electric circuit in nh, value of which satisfies the condition: L≤100 nh. Plasma acceleration method includes ignition of charge in discharge channel of plasma accelerator in pulse feed of discharge voltage from energy accumulator to electrodes of plasma accelerator. In discharge channel of accelerator quasi-periodic pulse discharges are ignited and maintained with value of discharge voltage U no less than 1000 volts and above-mentioned characteristics of accelerator electric circuit. |
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