Detector for flow abnormalities in gaseous diffusion plant compressors

Patent · Tue Jun 16 04:00:00 EDT 1998

OSTI ID:672535

Smith, S F; Castleberry, K N

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.

• Research Organization: Lockheed Martin Energy Syst Inc
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
• Patent Number(s): US 5,767,780/A/
• Application Number: PAN: 8-551,984
• OSTI ID: 672535
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
DATA ANALYSIS
DESIGN
ELECTRIC MOTORS
GAS COMPRESSORS
GAS FLOW
GASEOUS DIFFUSION PLANTS
MONITORING
MONITORS
SIGNALS