Journal ArticleDOI
Characterization of Electrostatic Sensors for Flow Measurement of Particulate Solids in Square-Shaped Pneumatic Conveying Pipelines
Lihui Peng,Yan Zhang,Yong Yan +2 more
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TLDR
Theoretical analysis of an electrostatic sensor with square-shaped electrodes for installation on a pneumatic conveying pipeline is reported in this article, where induced charge on the electrode and hence the induced current are derived.Abstract:
Theoretical analysis of an electrostatic sensor with square-shaped electrodes for installation on a pneumatic conveying pipeline is reported in this paper. In comparison with ring-shaped ones, the square-shaped electrodes are more difficult to analyze because of the four sharp corners. Based on a mathematical model of the electrostatic sensor, induced charge on the electrode and hence the induced current are derived. Sensitivity distribution and frequency response of the sensor are consequently identified. Additionally, effects of the geometric dimensions and attributes of charged particles on the characteristics of the sensor are investigated. Experimental work was performed on a purpose-built particle flow test rig in order to verify the modeling results. Suggestions on the improvement of the electrostatic sensor design are also given.read more
Citations
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Journal ArticleDOI
Review of techniques for the mass flow rate measurement of pneumatically conveyed solids
Yingna Zheng,Qiang Liu +1 more
TL;DR: In this article, a review is presented on the recent measurement techniques of solids' mass flow rate measurement in pneumatic conveying systems on basic principle and configuration of each technique, performances and limitations of these techniques in industrial applications.
Journal ArticleDOI
Finite-Element Modeling of Electrostatic Sensors for the Flow Measurement of Particles in Pneumatic Pipelines
Jan Krabicka,Yong Yan +1 more
TL;DR: A novel approach to the study of the charge induced onto electrostatic sensors based on fitting a Lorentzian curve to the results of a finite-element model of the electrostatic sensor and pipeline is presented.
Journal ArticleDOI
Development of sensing and control system for robotized laser-based direct metal addition system
TL;DR: In this article, the authors developed a sensing and control system for the robotically controlled 8-axis LBDMA system developed at the Research Center for Advanced Manufacturing of Southern Methodist University, Dallas, TX.
Journal ArticleDOI
Rotational Speed Measurement Through Electrostatic Sensing and Correlation Signal Processing
TL;DR: The principle and application of electrostatic sensors and correlation signal processing techniques to real-time measurement of rotational speed and the results suggest that the distance between the electrodes and the surface of the rotating object is a key factor affecting the performance of the measurement system.
Journal ArticleDOI
A reproducible test to characterise the triboelectric charging of powders during their pneumatic transport
TL;DR: In this article, a pneumatic test was used to characterise the triboelectrification of fine powders, and the results showed that solids loadings higher than 1 (kg of solids/kg of air) are not proper to achieve reliable measurements, and that the time evolutions of the electrostatic charge and the mass of the powder follow similar trends so that the tribocharging becomes independent of the solids mass flowrate.
References
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Journal ArticleDOI
Mass flow measurement of bulk solids in pneumatic pipelines
TL;DR: A detailed and comprehensive review of the techniques and the current state of knowledge and experience can be found in this article, where the techniques are classified under three main categories: direct measurement of mass flow rates, measurement of volumetric concentrations of solids and measurement of solid velocity.
Book
Cross Correlation Flowmeters, Their Design and Application
M. S. Beck,A. Plaskowski +1 more
TL;DR: This book provides a comprehensive review of the theory and practice of cross correlation flowmetering, and is aimed at three potential audiences: the graduate student in engineering or science who requires an introduction to the relevant signal processing theory; the advanced research and development engineer who requires the Theory and its practical implementation in considerable depth; and the industrial instrument engineer who is interested in the practical aspects of transducers and installation features for specific applications.
Journal ArticleDOI
Velocity measurement of pneumatically conveyed solids using electrodynamic sensors
TL;DR: Theoretical and experimental studies of cross correlation techniques applied to non-restrictive velocity measurement of pneumatically conveyed solids using ring-shaped electrodynamic flow sensors are presented in this article.
Journal ArticleDOI
Electrical capacitance tomography for gas–solids flow measurement for circulating fluidized beds
TL;DR: In this paper, a non-intrusive technique for measuring axial and angular velocities of gas-solids flows in the risers of circulating fluidized beds (CFBs) and cyclones is presented.
Journal ArticleDOI
Design and evaluation of electrostatic sensors for the measurement of velocity of pneumatically conveyed solids
TL;DR: In this article, the authors describe the fundamental mechanism of the electrostatic sensing and identify the important aspects of the design of constituent elements of the sensor including electrodes, amplifiers and sensing heads.
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Velocity measurement of pneumatically conveyed solids using electrodynamic sensors
Finite-Element Modeling of Electrostatic Sensors for the Flow Measurement of Particles in Pneumatic Pipelines
Jan Krabicka,Yong Yan +1 more