On-line continuous monitoring of screw compressors

Multi-disciplinary technologies

  • Motor current, Voltage & Phase Angle sensors
  • 3D Smart wireless accelerometers
  • Smart Wireless Ultra sound sensors
  • RTD probes
  • Control data from, for example, PI of OSIsoft inc

Main Functionality

  • System customization
  • On line signal processing
  • Aggregation of tags, signature parameters into Software Diagnostics Sensors.
  • Automatic trend tracking with early discovery of minor disturbances

Prognosis of time when a tag or a Software Sensor value reaches a threshold value.

       Failures detected                                       Method of detection
Rotor Imbalance                                                  Spectral analysis of motor current and phase angle signals
Synchro-mesh  and step-up gear wear          3D Smart wireless accelerometers & Ultra sound sensors
Sleeve and axial  bearing wear                         Smart Wireless Ultra sound sensors
Rolling bearing disruptions                               3D Smart wireless accelerometers & Ultra sound sensors
Loose foundation                                                Phase angle and vibration analysis
Seal problems                                                      Smart Wireless Ultra sound sensors
Lubrication problems                                          Smart Wireless Ultra sound sensors
Coupling/Belt drive                                             3D Smart wireless accelerometers
Short windings in electrical motors                Spectral analysis of motor current and phase angle signals
Rotor-stator gap problems                               Phase Angle fractals
VFD improper performance                             Spectral analysis of voltage SINE in three phases

 

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