On-line particle size distribution measuring device and method based on array sonic transducer

A technology for particle size distribution and measuring device, which is applied in the direction of measuring device, particle size analysis, particle suspension analysis, etc.

Inactive Publication Date: 2013-11-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

At present, the common particle size measurement methods are still difficult to achieve online measurement of particle size in pneumatic conveying pipelines. For example, the sieving method is cumbers...

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  • On-line particle size distribution measuring device and method based on array sonic transducer
  • On-line particle size distribution measuring device and method based on array sonic transducer
  • On-line particle size distribution measuring device and method based on array sonic transducer

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Embodiment Construction

[0020] The invention provides an on-line measurement device and method of particle size distribution based on an array acoustic sensor. The following describes the present invention with reference to the drawings and embodiments as follows:

[0021] figure 1 Shown is the schematic diagram of the principle structure of the on-line particle size distribution measurement device. In the figure, the acoustic emission detection probe 2 is inserted into the gas-solid two-phase flow pipeline 1, and the acoustic emission detection probe 2 is immersed in the particle flow field; the acoustic emission detection probe 2 is hollow inside, and the acoustic emission detection probe 2 is distributed There are multiple acoustic emission detection units 3; the acoustic emission detection unit is composed of a vibrating member 5, a piezoelectric film sensor 7 and a sound insulation rubber 8. The output signal of the acoustic emission detection unit is connected to the embedded data processing modul...

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Abstract

The invention discloses an on-line particle size distribution measuring device and method based on an array sonic transducer, which belongs to the technical scope of gas-solid two-phase flow on-line measurement. The on-line particle size distribution measuring device adopts the structure that a sound emission detection test piece with a plurality of sound emission detecting units is mounted on a gas-solid two-phase flow pipeline, a particle collision vibration member generates a sound emission signal, a piezoelectric film sensor detects the sound emission signal, sound insulation rubber is arranged between the vibration member and the sound emission detection test piece, and an embedded data processing module is adopted to process and analyze the sound emission signal to obtain the particle size distribution information. Each sound emission detecting unit can measure the particle size distribution of particles in the local space, and together with fusion of all local information in a pipeline, the integral particle size distribution of the particles in the pipeline can be obtained, thereby providing measurement data for powder flow behavior research and industrial field on-line diagnosis.

Description

Technical field [0001] The invention belongs to the technical range of on-line measurement of gas-solid two-phase flow, and particularly relates to an on-line measurement device and method for particle size distribution based on an array acoustic sensor. Background technique [0002] Powder particles are the most common form of materials and products in the process industry. They are widely used in many industrial fields such as medicine, food, chemical industry, and metallurgy. The material properties of the powder can be characterized by multiple parameters such as density, shape, size, hardness, porosity, and dispersion. The particle size is an important parameter that determines the quality and performance of the product. For example, the particle size of the preparation will directly affect the drug The effectiveness, stability and safety of the cement. The strength, fluidity, coagulation and hardening process of cement are closely related to the particle size of the powder....

Claims

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Application Information

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IPC IPC(8): G01N15/02G01N15/06
Inventor 胡永辉闫勇钱相臣黄孝彬
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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