Measuring device of dense two-phase flow particle speed and concentration spatial distribution

A particle velocity and spatial distribution technology, applied in the field of multiphase flow measurement, can solve problems such as low measurement accuracy, obstacles to the enlargement and use of fluidization equipment, and no breakthrough progress in measurement
CN102494869AInactive Publication Date: 2012-06-13SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a measuring device of dense two-phase flow particle speed and concentration spatial distribution. The invention is characterized in that: the device comprises an image acquisition terminal and an image processing unit (8); the image acquisition terminal is used for shooting a motion video of a particle (2) in a fluidization apparatus (1), and the image acquisition terminal comprises a laser source (9), a fiber endoscope (3), a high speed industrial camera (4), an image acquisition card (6) and a computer (7); a sheet-shaped laser beam (10) is provided by the laser source (9) to determine a measurement area in the fluidization apparatus (1); the fiber endoscope (3) shoots the determined measurement area as an optical lens, a lens of the fiber endoscope (3) is parallel with a plane of the laser beam (10), and a distance between the lens and the laser beam (10) is maintained at 10 mm. According to the invention, since the fiber endoscope is used as the optical lens, multi-angle measurement in a flow field is conveniently realized, and a difficulty that a motion parameter of the particle in a dense phase flow field can not be obtained is overcome.
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Description

technical field

[0001] The invention provides a measuring device for the velocity and concentration spatial distribution of moving particles in a dense two-phase flow field, which is especially suitable for measuring the velocity and concentration spatial distribution of dense phase particles in a gas-solid spouted bed, and belongs to the field of multiphase flow measurement . Background technique

[0002] The spatial distribution of velocity and concentration of two-phase flow is the key parameter for analyzing the fluid dynamics in two-phase flow, and it is the premise for understanding the heat transfer and mass transfer mechanism between two-phase fluids in fluidization devices. Design and optimization of structural parameters are of great significance.

[0003] At present, there are many methods to measure particle velocity and concentration in two-phase flow field. The traditional measurement methods include impact force method, constant velocity sampling method, heat...

Claims

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