Wireless measuring device and method for concentration of non-spherical particles of three-dimensional dense gas-solid system

Abstract

The invention discloses a wireless measuring device for the concentration of non-spherical particles of a three-dimensional dense gas-solid system. The wireless measuring device comprises magnetic-control photographing particles, a magnetic-control driving unit, a wireless signal receiving unit, a wireless remote controller and an image processing unit, wherein the magnetic-control photographing particles are coupled with photographing and wireless signal transmitting and receiving functions and are arranged inside the three-dimensional dense gas-solid system; the magnetic-control photographing particles are similar to the non-spherical particles inside the system in shape and size; the magnetic-control photographing particles can move randomly in a gas-solid flow field and also move to a target area under the control of the magnetic-control driving unit; the distributed information of the magnetic-control photographing particles in an ambient bed layer is scanned and photographed by using a camera inside the magnetic-control photographing particles; finally an image signal is transmitted to a wireless signal transmitting and receiving system outside the system in a wireless transmitting mode, and the concentration of the particles is obtained through image processing. By adopting the measuring method and the device disclosed by the invention, the visible particle distribution information inside the bed layer can be obtained in random movement and magnetic-control movement modes, and the wireless measuring method and device have the advantages of no interference on flow fields, real-time on-line measurement and the like.

Description

technical field [0001] The invention relates to a wireless measurement method and device for the concentration of non-spherical particles in a three-dimensional dense gas-solid system, belonging to the technical field of multiphase flow measurement. Background technique [0002] Dense gas-solid systems are widely used in industrial production, especially in the fields of chemical industry and energy power. In these application processes, solid materials contain not only spherical particles but also non-spherical particles, such as solid waste rotary kiln combustion gasification, biomass straw fluidized bed combustion, spherical / non-spherical particle mixture fluidized separation, etc. Obviously, whether it is a physical treatment process or a chemical reaction process, the mass transfer, heat transfer and momentum transfer between materials are extremely important, which directly affects the process efficiency and product quality. Particle concentration is an important para...

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Problems solved by technology

[0006] Purpose of the invention: The present invention aims at conventional particle concentration measurement devices that interfere with the flow field and cannot extract direct particle concentration information. Some measurement methods can only obtain apparent two-dimensional information and cannot achieve three-dimensional full-field measurement. Some measurement methods are only applicable Due to the problems of static measurement and inability to realize online real-time monitoring, a wireless measurement device and method for the concentration of non-spherical particles in a three-dimensional dense gas-solid system are provided.

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