7 results about "Aerosol powder" patented technology

The utility model relates to the technical field of atomization powder making, in particular to a plug pulling pouring type gas atomization powder making device which comprises a melting part, and a through hole is formed in the bottom end of the melting part. The liquid guide part comprises a first end and a second end which have the same axis but different outer diameters; the upper end of the plug rod is connected with a driving mechanism, and the lower end of the plug rod is provided with a matching part; the atomizing nozzle is connected with a gas pipeline, the second end is sleeved with the atomizing nozzle, and the upper end face of the atomizing nozzle abuts against the lower end face of the first end; the feedback adjusting assembly comprises a control unit, a position sensing part arranged on the plug rod, and a gas flow sensing part and a gas flow adjusting part which are sequentially arranged along the gas pipeline, and through the arrangement, it is ensured that finished metal powder is uniform in particle size form distribution and high in sphericity degree; and the atomization efficiency and the system stability during atomization work are effectively improved.

The present application provides a kind of powder agglomeration aerosol powder feeding device, including aerosol generating chamber and mixing mechanism, and the mixing mechanism includes rack, driving mechanism, mixing tank, first transmission assembly and material adding mechanism.By driving mechanism driving mounting frame reciprocating swing, and by second transmission assembly driving intermittent opening of material discharge slot of file lever, it makes gas phase alumina powder intermittent into yttria powder raw material, effectively avoid the self-agglomeration of gas phase alumina powder produced by one-time addition, facilitate the realization of uniform single particle coating of gas phase alumina powder on the surface of yttria powder, mix evenly, improve the electrostatic inhibition effect, at the same time, mixing tank reciprocating swing and rotation are carried out shaftless tumbling stirring, which can reduce the generation of static electricity, avoid the shaft sticking, agglomeration of gas phase alumina powder, improve the utilization rate of gas phase alumina powder, and there is no strong shear, which will not cause the gas phase alumina powder to be dispersed again after uniform coating on the surface of yttria powder raw material, ensure the performance stability of mixed powder.

The application discloses a device and method for measuring aerosol release share and rate at a fuel rod break of a lead-bismuth reactor, which comprises a high-pressure gas tank, an aerosol mixing device, a simulated fuel rod, a break sealing device, a collecting device, a particle size spectrometer and pipeline valves and flow pressure measuring instruments. The high-pressure gas tank is used for providing required gas, the aerosol mixing device is used for mixing gas and used aerosol powder, the simulated fuel rod is used for containing high-pressure aerosol and is designed in different shapes and sizes of cladding breaks according to the size and structure of a real lead-bismuth reactor fuel rod, the break sealing device is used for sealing the break to form a closed environment inside the fuel rod, the collecting device is used as a containing place of the aerosol to facilitate subsequent sampling measurement, and the particle size spectrometer is used for measuring the aerosol particle concentration of sample gas. The application can complete the measurement of the aerosol release share in the gap between the fuel rod pellet and the cladding and the release rate of the gas through the break, and is used for studying the release characteristics of the aerosol and the fissile gas under different fissile gas pressures and different break sizes and appearances.

The invention discloses a device and a method for measuring aerosol release share and particle size distribution under damage of lead-bismuth fuel. The device comprises a high-pressure gas tank, an aerosol weighing device, a simulation fuel rod, a crevasse sealing device, a collecting device, a wet particle size analyzer, a pipeline valve and a measuring instrument, the high-pressure gas tank is used for providing gas required by the whole device, the aerosol weighing device is used for weighing aerosol powder used in the fuel rod in an initial state, and the simulated fuel rod is designed according to the size and the structure of the real lead-bismuth reactor fuel rod and is used for accommodating high-pressure gas and aerosol and constructing cladding crevices with different shapes and sizes; the crevasse sealing device is used for sealing a crevasse to construct a closed environment in the fuel rod, the collecting device serves as a containing place for aerosol released by the fuel rod to facilitate subsequent sampling measurement, and the wet particle size analyzer is used for measuring particle size distribution of aerosol particles. The device disclosed by the invention can be used for measuring the release share and the particle size distribution of the aerosol in the fuel rod pellet-cladding gap through the cladding crevasse, and can be used for researching the release characteristics of the aerosol under different fission gas pressures and different crevasse sizes and morphologies.

The invention relates to gas atomization powder manufacturing equipment for alloy powder production, which relates to the technical field of alloy powder processing equipment and comprises a frame body, an atomization cylinder, a feeding box, a dynamic feeding assembly, a powder collecting tank, a straightening mechanism and an impact type descaling mechanism. The atomization barrel is composed of a straight barrel section and a conical powder collecting section, an atomization mechanism and a high-frequency smelting coil are arranged in the atomization barrel, and a water-cooling spiral pipeline is arranged on the barrel wall and matched with a conical radiant panel to accelerate cooling of metal liquid drops. A gradient composite inner wall coating, a spiral flow guide structure and an impact type descaling mechanism are adopted, the powder adhesive force is damaged through high-frequency knocking, and adhesion is prevented. And the powder collecting tank is connected with the atomizing cylinder through a quick disassembly structure, so that quick disassembly and assembly are realized, and the collecting efficiency is improved. The straightening mechanism is provided with a sliding rod adjusting mechanism, a movable frame can be electrically driven, stepless adjustment of the distance between straightening wheels is achieved, and the straightening mechanism is suitable for raw materials of various specifications. According to the equipment, the production efficiency and the product quality are effectively improved, and an efficient, stable and reliable solution is provided for alloy powder production.

This invention discloses a heavy-duty durable airport pavement RPC and its preparation method, comprising the following components in parts by weight: 15-30 parts silica fume, 20-50 parts mineral powder, 0-25 parts fly ash, 0-25 parts microspheres, 8-15 parts graphene, 1.5-8 parts composite microsurfactant, 8-25 parts aerosol powder, and 10-15 parts retarding high-efficiency water-reducing agent. The composite microsurfactant includes 1-3 parts sodium glutamate and 0.5-5 parts sodium carboxymethyl cellulose. The heavy-duty durable airport pavement RPC provided by this invention, with solid waste materials as the main body, combined with composite microsurfactants and retarding high-efficiency water-reducing agents, can significantly improve the flexural strength and freeze-thaw resistance of airport pavement concrete when used in concrete, improve the performance of airport pavement concrete, ensure the service life of airport pavement, reduce the amount of maintenance work, and lower construction and maintenance costs.

The invention discloses a device and a method for spraying aerosol in a supersonic flight state. The device comprises a gas supply system, a secondary flow gas conveying pipeline, an aerosol particle feeding system, an aerosol powder feeding amount control system, an aerosol conveying pipeline, an aerosol conveying pipeline shielding cover, an aerosol nozzle, an aerosol nozzle angle adjusting device, an outer adjusting piece structure device and the like. The spatial distribution of aerosol particles can be freely regulated and controlled according to the actual flight Mach number, the aerosol spraying amount is regulated and controlled through an aerosol conveying valve, the aerosol spraying angle is regulated and controlled through an aerosol nozzle angle adjusting device, the inclination angle of an outer adjusting piece can be adjusted, and an ideal aerosol spatial distribution form is obtained; and the aerosol particle powder feeding amount is increased along with the increase of the flight Mach number through an aerosol powder feeding amount control system, so that the concentration of an aerosol shielding layer is improved, and the infrared inhibition ratio of supersonic flight at each detection angle is greatly improved.