Experimental device and method for wind flow-fog droplet-dust three-phase media coupled sedimentation

Abstract

The invention discloses an experimental device and method for coupled settlement of three-phase media of wind flow-fog droplet-dust, which comprises a simulated pipe made of plexiglass, the simulated pipe is provided with an air inlet and an air outlet, and the simulated pipe is close to the air inlet A dust emitter is installed at the place, and the other end of the simulated pipeline is provided with a water mist nozzle arranged opposite to the dust emitter. The simulated pipeline is evenly arranged with multiple gaps corresponding to the coupling settlement area, and each gap forms a laser detection area. The simulated pipeline Laser Doppler interferometers are respectively arranged on both sides, and the laser Doppler interferometer can scan the corresponding laser detection area. It can simulate the coupling and settlement of three-phase media of wind flow-fog droplet-dust under the spray field in the atmospheric environment, and can test the dust reduction effect of different types of nozzles to provide technical support for the development of efficient nozzles; the number and position of the nozzles can be selectively opened, Provide technical support for the development of efficient spray equipment.

Description

technical field [0001] The invention relates to an experimental device and method for coupled settlement of wind flow-fog droplet-dust three-phase medium. Background technique [0002] In recent years, the phenomenon of smog weather has increased day by day, which has significantly reduced the air quality and seriously affected people's physical and mental health. First of all, PM 2.5 in the smog threatens the health of newborns. In foggy days, the sun is reduced, children are not exposed to ultraviolet rays, vitamin D production is insufficient, calcium absorption is greatly reduced, and children's growth slows down. Secondly, the composition of haze is very complex. It can directly enter and adhere to the human respiratory tract and alveoli, causing acute rhinitis and acute bronchitis. If left in this environment for a long time, it can also induce lung cancer. Thirdly, there are many pollutants and low air pressure in the haze weather, which can easily induce acute attac...

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Problems solved by technology

The particle size of spray droplets is affected by many factors, among them, the arrangement method of droplet measuring points in spray field, the type, position and quantity of nozzles, the particle size and velocity of droplets, and the influence of wind speed on coupling dust fall The research is particularly important, but the dust reduction technology studied by domestic and foreign scholars is limited in the arrangement of measuring points, the type, position and number of nozzles, the particle size and velocity of fog droplets, and the experimental device and method of three-phase medium coupling settlement by adding wind flow. Less research, lack of theoretical and experimental basis in general

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