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. 6 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 672535
- Patent Number(s):
- 5767780
- Application Number:
- PAN: 8-551,984; TRN: 99:001066
- Assignee:
- Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 16 Jun 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; GASEOUS DIFFUSION PLANTS; GAS COMPRESSORS; MONITORS; DESIGN; MONITORING; GAS FLOW; ELECTRIC MOTORS; SIGNALS; DATA ANALYSIS
Citation Formats
Smith, S F, and Castleberry, K N. Detector for flow abnormalities in gaseous diffusion plant compressors. United States: N. p., 1998.
Web.
Smith, S F, & Castleberry, K N. Detector for flow abnormalities in gaseous diffusion plant compressors. United States.
Smith, S F, and Castleberry, K N. Tue .
"Detector for flow abnormalities in gaseous diffusion plant compressors". United States.
@article{osti_672535,
title = {Detector for flow abnormalities in gaseous diffusion plant compressors},
author = {Smith, S F and Castleberry, K 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. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 16 00:00:00 EDT 1998},
month = {Tue Jun 16 00:00:00 EDT 1998}
}