Measuring method using PZT AE sensor for massflow of moved bed gravity flow

Author

Moriyama, Takumi ; Misaki, Tokiko

Author_Institution

Dept. of Mech. Electron. Eng., Tokushima Bunri Univ.

fYear

1995

fDate

26-28 Jul 1995

Firstpage

1191

Lastpage

1194

Abstract

This paper shows that a PZT acoustic emission sensor is suitable, as one of the novel nonintrusive methods, for mass flow measurement of moved bed gravity flow in a stand pipe of the new high calorie gasifier or DRI process. This sensing signal is suitable for the process at 2~:48 cm/s. The accuracy is below ±1.6% FS for 40.0/48.5 φ pipe without band-pass filter. The band-pass filter is suitable for 75 kHz in 20.1/27.3 φ and 40.0/48.5 of steel stand pipe with 1.8 φ 1.5 kg/l silica pellets. It is able to delete inverse response of moved bed gravity flow. The frequency of red bean was 36 kHz in 20.1/27.3 φ pipe

Keywords

acoustic emission; acoustic transducers; flow control; flow measurement; lead compounds; materials handling; piezoceramics; piezoelectric transducers; 36 kHz; 75 kHz; PZT acoustic emission sensor; mass flow measurement; moved bed gravity flow; nonintrusive sensing; sensing signal; solid gas mixture; stand pipe; Acoustic emission; Acoustic measurements; Acoustic sensors; Band pass filters; Fluid flow measurement; Gravity; Motion measurement; Signal processing; Silicon compounds; Steel;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE '95. Proceedings of the 34th SICE Annual Conference. International Session Papers

Conference_Location

Hokkaido

Print_ISBN

0-7803-2781-0

Type

conf

DOI

10.1109/SICE.1995.526655

Filename

526655