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A wireless measurement device and method for the concentration of non-spherical particles in a three-dimensional dense gas-solid system

A non-spherical particle, wireless measurement technology, applied in the field of multiphase flow measurement, can solve problems such as the inability to achieve three-dimensional full-field measurement, the measurement method only suitable for static measurement, and the inability to achieve online real-time monitoring.

Inactive Publication Date: 2016-08-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • A wireless measurement device and method for the concentration of non-spherical particles in a three-dimensional dense gas-solid system
  • A wireless measurement device and method for the concentration of non-spherical particles in a three-dimensional dense gas-solid system
  • A wireless measurement device and method for the concentration of non-spherical particles in a three-dimensional dense gas-solid system

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Embodiment 1

[0054] In this implementation, an experimental device is designed for the pyrolysis process of solid waste in a rotary kiln to measure the mixing degree of solid heat carrier and solid waste. The specific implementation steps are as follows:

[0055] Select 50 particles with relatively regular shapes from solid waste, count the diameter of 50 particles as 20mm, and select cylindrical non-spherical particles as the shape of the magnetic control imaging particles. The diameter of the rotary kiln (three-dimensional dense gas-solid system) is 500mm , 1500mm long. The transparent shell is made of plexiglass, the outer diameter is 22mm, the height is 60mm, and the diameter of the inner core channel is 8mm. The telescopic ring and the ring magnet are arranged concentrically in the transparent casing, the telescopic ring is on the outer ring, and the ring magnet is on the inner ring. The width of the telescopic ring and the ring magnet are respectively 3mm, 5 convex lenses and 5 concav...

Embodiment 2

[0060] In this implementation, an experimental device is designed for a biomass fluidized bed combustion boiler, which is used to measure the mixing degree of bed material and biomass. The specific implementation steps are as follows:

[0061] Select 80 particles with relatively regular shape from the biomass straw particles and count the diameter of the particles, which is 20mm, and the designed fluidized bed size is 400mm×400mm. The transparent shell is made of plexiglass, the outer diameter is 18mm, the height is 50mm, and the diameter of the inner core channel is 5mm. The telescopic ring and the ring magnet are arranged concentrically in the transparent casing, the telescopic ring is on the outer ring, and the ring magnet is on the inner ring. The width of the telescopic ring and the ring magnet is 3mm, 3 convex lenses and 3 concave lenses are evenly arranged on the telescopic ring, the size of the convex lens and the concave lens is 3mm, which is consistent with the width...

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Abstract

The invention discloses a wireless measuring device for the concentration of non-spherical particles in a three-dimensional dense gas-solid system, which comprises magnetic control imaging particles, a magnetic control driving unit, a wireless signal receiving unit, a wireless remote controller and an image processing unit. Magnetically controlled imaging particles are coupled with imaging and wireless signal transmitting and receiving functions and placed in a three-dimensional dense gas-solid system, which are similar in shape and size to non-spherical particles in the system. Random movement, and move to the target area under the control of the magnetic control drive unit; use the camera inside the magnetic control imaging particle to scan and capture the distribution information of the surrounding bed; finally, the image signal is transmitted to the wireless signal outside the system by wireless transmission The transceiver system obtains the particle concentration through image processing. The measurement method and device of the present invention can obtain intuitive particle distribution information inside the bed under random motion and magnetic control motion modes, and has the advantages of no interference to the flow field, 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
Inventor 张勇钟文琪金保昇郑昕
Owner SOUTHEAST UNIV
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