Detector for flow abnormalities in gaseous diffusion plant compressors
Abstract
A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value.
- Inventors:
-
- Loudon, TN
- Harriman, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 871634
- Patent Number(s):
- 5767780
- Assignee:
- Lockheed Martin Energy Research Corporation (Oakridge, TN)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
H - ELECTRICITY H02 - GENERATION H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- detector; flow; abnormalities; gaseous; diffusion; plant; compressors; detects; abnormality; compressor; outputs; motor; current; signal; demodulator; lowpass; filter; demodulating; filtering; producing; demodulated; third; fourth; bandpass; filters; connected; accordance; frequencies; generating; filtered; signals; amplitudes; amplitude; detectors; respectively; detecting; adders; adding; added; finally; comparator; comparing; abnormal; condition; exceeds; predetermined; value; pass filters; bandpass filter; modulated signal; motor current; predetermined value; current signal; detector detects; bandpass filters; pass filter; gaseous diffusion; signal producing; abnormal condition; filtered signal; normal condition; plant compressor; diffusion plant; /340/324/
Citation Formats
Smith, Stephen F, and Castleberry, Kim N. Detector for flow abnormalities in gaseous diffusion plant compressors. United States: N. p., 1998.
Web.
Smith, Stephen F, & Castleberry, Kim N. Detector for flow abnormalities in gaseous diffusion plant compressors. United States.
Smith, Stephen F, and Castleberry, Kim N. Thu .
"Detector for flow abnormalities in gaseous diffusion plant compressors". United States. https://www.osti.gov/servlets/purl/871634.
@article{osti_871634,
title = {Detector for flow abnormalities in gaseous diffusion plant compressors},
author = {Smith, Stephen F and Castleberry, Kim N},
abstractNote = {A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}