9 results about "High velocity" patented technology

An improved axial gas bearing for a gas-driven NMR MAS sample rotor is disclosed that utilizes inward flow with a low rotational component over a rotor conical end. A conical flow region is formed between the rotor conical end and a conical stator bearing surface such that the included angle defining the stator surface is not less than the included angle defining the rotor conical end. Gas is injected radially inward with a significant axial rearward component from a number of small holes at high velocity from the periphery into the conical flow region. Compared to the radial velocity components, the tangential flow components of the injected gas are small and preferably opposed to the direction of the rotor rotation. The high and accelerating negative radial velocities may result in significant Bernoulli effect, such that the mean axial pressure over the conical rotor end may be less than atmospheric pressure for a given axial clearance, but as the clearance decreases, the hydrostatic effects exceed the Bernoulli effects and the mean axial pressure over the conical rotor end may then exceed atmospheric pressure by a substantial amount. Thus, a self-stabilizing axial bearing is formed with improved stability and stiffness for rotor surface speeds up to at least 80% of the speed of sound. Motive power required to spin the rotor may be provided by a radial-inflow microturbine at the opposite end of the rotor in a way that is readily compatible with automatic sample change.

The invention relates to a hybrid driving system, which comprises an internal-combustion engine, a first motor, a second motor, a power output shaft used for outputting power, a first brake, a second brake, a first transmission mechanism, and a second transmission mechanism. Two connected transmission mechanisms and brakes are arranged in the hybrid driving system. When the two brakes respectively brake, the two transmission mechanisms are in two different connection modes, namely two different transmission ratios (tap positions) are formed, therefore various working modes and corresponding tap positions can be selected according to different driving conditions of a vehicle, and driving requirements of the vehicle under different working conditions can be met further. Besides, by the adoption of the hybrid driving system provided by the invention, the low-speed torsion of the whole vehicle can be increased and the starting is quickened, moreover, the highest efficiency of the internal-combustion engine can be exerted under a high-speed condition, thereby promoting energy conversion efficiency, reducing tail gas emission and energy loss, and finally achieving the effects of low emission, low fuel consumption and high kinetic energy of the whole vehicle.

The invention discloses an anti-corrosion and wear-resisting coating for a throwing disc of a pneumatic type feeder. The anti-corrosion and wear-resisting coating is prepared from a POSS (polyhedral oligomeric silsesquioxane) coated multiwalled carbon nanotube, bisphenol A epoxy resin, phenolic resin, wear-resisting filler, a self-lubricating material, an antifoaming agent, a leveling agent, a curing agent and a solvent. According to a preparation method of the anti-corrosion and wear-resisting coating, POSS and a multiwalled carbon nanotube are used for preparing the POSS coated multiwalled carbon nanotube firstly, then the POSS coated multiwalled carbon nanotube are mixed with the bisphenol A epoxy resin, the phenolic resin, the wear-resisting filler, the self-lubricating material, the antifoaming agent, the leveling agent and the solvent in proportion, coating slurry is prepared, the coating slurry is mixed with the curing agent and cured at the room temperature for film forming during construction, and the anti-corrosion and wear-resisting coating is obtained. The preparation process of the coating is simple to operate, and the prepared coating has excellent corrosion resistance, wear resistance, self-lubrication and water lubrication and is an ideal anti-corrosion and wear-resisting material for the throwing disc of the pneumatic type feeder, an oil conveying pipe and the like under severe working conditions.

The invention relates to a direct-drive composite permanent magnet motor with a magnetic transmission and dual-stator structure. According to the direct-drive composite permanent magnet motor with the magnetic transmission and dual-stator structure, a novel permanent magnet motor with a dual-stator hollow-rotor structure and a magnetic gear transmission technology are integrated so as to directly realize the mutual conversion of electric energy and low-revolving-speed large-torque mechanical energy, and the novel direct-drive composite permanent magnet motor can be widely applied to the wind power generation, hydraulic power generation, electric automobiles, ship drive and the field of transmission of other industries needing direct drive. The direct-drive composite permanent magnet motor is characterized in that an integrated structure is formed in a manner that a disk-shaped magnetic transmission gear pair I and a dual-stator-structure permanent magnet motor II are combined, the variable-speed transmission of high-speed and low-speed mechanical kinetic energies is realized by using the magnetic transmission gear pair I with transverse magnetic fields, the electromechanical energy conversion is realized by using the dual-stator-structure permanent magnet motor II with radial magnetic fields, a magnetic circuit structure is of a closed magnetic circuit which is formed in a manner that an inner stator and an outer stator are directly connected between two hetero-polarity permanent-magnet poles of a hollow rotor in series, the inner stator, the outer stator and the rotor are of a radial concentric structure, and two air gaps exist.

The invention relates to a manufacturing method for a high-speed permanent magnetic rotor. By performing the processes of assembling, polishing, dynamic balance and the like, and setting reasonable parameters, it can be ensured that magnetic poles of the motor rotor are firmly bonded on a rotor iron core at a high speed of 40,000 rpm. The permanent magnetic rotor manufactured with the method can work under a condition that the rotational speed is 50,000 rpm for a long term, is successfully applied to power motors of digital electronic control systems of aircraftengines, and meets operating requirements of high rotational speeds of aviation motors.

The invention discloses an oil fume controlling method and system based on an object identifying model, and computer equipment. The oil fume is prevented from diffusing by a high velocity air stream longitudinally surrounding between an oil fume outlet and an oil fume suction area. The high velocity air stream is directed from the oil fume outlet to the oil fume suction area. The controlling method includes the steps that information of an oil fume produced by different cooking processes is collected; the information of the oil fume is marked, and a training set needed for oil fume identification is made; the training set is input into the object identifying model, and an oil fume identifying model is trained and formed; and the real-time oil fume information is input into the oil fume identifying model, an oil fume concentration is obtained, and the height of the air outlet position or the initial air speed of the high velocity air stream is controlled according to the concentration of the oil fume.

The invention discloses a increasing speed but saving effort and automatic change speed high speed, labor saving bicycle. It comprises a handlebar, a frame, a pedal, a chain plate, a chain, a wheel and so on. The said rear axletree is equipped with a epicyclic gear group, the middle axle of the pedal and the rear axletree is equipped with a single-acting impeller pump separately, the two impeller pump connects with two pipes and forms a confinement hydraulic system, the handlebar is equipped with speedometer, the front wheel fork is equipped with a speed sensor. The invention can improve the speed of the current multi-speed bicycle a plurality of times, and the higher the speed is, the more labor is saved.