Particle Diameter Acquisition via Scattered Light Attenuation
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Solution Overview
Problem
Measuring particle diameters in multi-phase flows at high concentrations is challenging due to difficulties in visualizing droplets and particles that absorb visible light, limiting the accuracy of existing techniques.
Innovation Solution
A particle diameter acquisition device and method that utilize an intensity distribution acquisition unit, attenuation gradient acquisition unit, and concentration acquisition unit, along with databases storing intensity distribution data, to accurately determine particle diameters using scattered light, regardless of whether it is visible or invisible, by referencing correlations between attenuation gradients and concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If visualization methods using high-speed cameras are used to measure droplet diameters, then measurement capability is provided, but measurement precision deteriorates when droplet concentration is high
Solution Approach 1:
The patent replaces optical visualization methods (high-speed cameras) with light scattering measurement methods. By measuring the intensity distribution of scattered light and its attenuation gradient, the system determines particle diameter without relying on direct visual detection, thereby maintaining measurement capability while improving precision at high concentrations.
Solution Approach 2:
The patent changes the measurement parameter from direct optical visualization to light scattering characteristics. By measuring the attenuation gradient of scattered light intensity distribution, the system transforms the measurement approach to one that remains effective at high concentrations where visualization fails.
2Difficulty of detecting and measuring
If visible light is used for droplet diameter measurement, then measurement capability is provided, but measurement precision deteriorates when the medium absorbs visible light
Solution Approach 1:
The patent changes the light wavelength parameter to overcome absorption issues. By measuring the attenuation gradient of scattered light, the system can accurately measure particle diameters even when the medium absorbs visible light, as the measurement relies on scattering characteristics rather than light transmission.
3Adaptability or versatility
If high concentration of dispersed phase is used, then application versatility is improved, but measurement precision deteriorates
Solution Approach 1:
The patent replaces direct visualization methods with light scattering measurement. By measuring the intensity distribution of scattered light and its attenuation gradient, the system maintains measurement capability and precision even at high concentrations where dispersed phases would otherwise be difficult to measure.
Solution Approach 2:
The patent uses scattered light as an intermediary to measure particle diameters. Instead of directly observing particles, the system measures the scattering characteristics of light interacting with particles, providing a reliable measurement pathway that works at high concentrations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise measurement of particle diameters in multi-phase flows with high concentrations, improving accuracy and applicability across various light types, including invisible light, by leveraging database correlations.
Implementation Method 1
an intensity distribution acquisition unit which is configured to acquire an intensity distribution of scattered light scattered from a multi-phase flow including a dispersed phase at a time of irradiating the multi-phase flow with irradiation light
Data Source
AI summary
A particle diameter acquisition device includes an intensity distribution acquisition unit configured to acquire an intensity distribution of scattered light scattered from a multi-phase flow including dispersed phase at the time of irradiating the multi-phase flow with irradiation light, an attenuation gradient acquisition unit configured to acquire an attenuation gradient in the intensity distribution on the basis of the intensity distribution of the scattered light, a concentration acquisition unit configured to acquire a concentration of the dispersed phase in the multi-phase flow, a database configured to store intensity distribution data which is an intensity distribution of scattered light for each particle diameter and concentration of a dispersed phase, and a particle diameter acquisition unit configured to acquire a particle diameter of the dispersed phase on the basis of the acquired attenuation gradient, concentration, and intensity distribution data with reference to the intensity distribution data.