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Particle granularity measuring apparatus based on divergent ultrasonic attenuation and method thereof

A measuring device, ultrasonic technology, applied in the direction of measuring device, particle size analysis, particle and sedimentation analysis, etc., can solve the problems of actual fluctuation difference, limited sensor size, impossible to generate plane waves, etc., to achieve the effect of high measurement accuracy and simple structure

Active Publication Date: 2015-11-25
上海盈诺精密仪器有限公司
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Problems solved by technology

This method has been widely used at present, but it still faces many problems in practical applications. The sound waves emitted by commonly used ultrasonic sensors are generally described by piston waves. Due to the limited size of the sensor, it is impossible to generate a complete Plane waves, often approximated as spherical acoustic waves in the far field
In this way, the difference between the actual fluctuation and the theoretical assumption is caused, and it will inevitably bring errors to the measurement

Method used

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  • Particle granularity measuring apparatus based on divergent ultrasonic attenuation and method thereof
  • Particle granularity measuring apparatus based on divergent ultrasonic attenuation and method thereof
  • Particle granularity measuring apparatus based on divergent ultrasonic attenuation and method thereof

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Embodiment Construction

[0028] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and all similar methods and similar changes of the present invention should be included in the protection scope of the present invention.

[0029] The device for measuring the particle size based on the method of divergent ultrasonic waves provided by the embodiment of the present invention is characterized in that the particle size can be accurately measured by using the sound change of the divergent ultrasonic waves.

[0030] The basic principle of divergent ultrasonic measurement is that it uses the incident divergent ultrasonic wave to be scattered and absorbed by the granular medium, and its transmitted sound intensity will be attenuated. Through modeling based on the Monte-Carlo method, the attenuation value can be predicted theoretically and the attenuation can ...

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Abstract

The invention discloses a measuring apparatus for total particle granularity of a two-phase system based on divergent ultrasonic attenuation, which comprises a supersonic wave signal-generator, a preposition signal processing circuit, a supersonic wave emission focusing energy transducer, a supersonic wave reception energy transducer, a signal conditioning circuit, a data collector and a center computer. A measurement zone is existed between the supersonic wave emission focusing energy transducer and the supersonic wave reception energy transducer. The measuring system has the advantages of simple structure and low cost, has accuracy degree for increasing measurement, and is suitable for different measurement condition.

Description

technical field [0001] The invention relates to ultrasonic detection technology, in particular to a device and method for measuring particle size in two-phase flow by using divergent ultrasonic attenuation. Background technique [0002] A particle refers to a discrete state within a size range, with a specific shape geometry, usually in the form of a solid, it can also be a liquid or a bubble. Coal powder in power plant boilers, dust in the atmosphere, river sediment, red blood cells in blood, and protein in milk all exist in the form of particles. The size of particles in a two-phase or multi-phase system is of great significance to modern industrial production such as energy, environment, materials, biology, chemical industry and other fields. Particles with a suitable particle size in the production process can not only improve production efficiency and ensure product quality, but also save energy and reduce pollution emissions. [0003] Ultrasonic industrial testing ...

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Application Information

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IPC IPC(8): G01N15/02
Inventor 苏明旭吴蓉蓉李俊峰
Owner 上海盈诺精密仪器有限公司
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