Monitor performance and main cause of damage / wear for turbine.
Reduce downtime caused by damage and corrective maintenance. Improve ability to do preventive maintenance.
Inputs
Quality
How
Accelerometers
Acoustic Emission
Phase
Resolution up to 2000Hz20-200Hz
Pressure sensor 4-20mA
Results
Plot 1: Cavitation Yes / NO
Plot 2: RMS for unfiltered sensor signals
Plot 3: Peak factors relative to frequencies for rotation, runner blade pass, guide vane pass
Cavitation is a physical phenomenon for water hydraulic turbines where water starts to evaporate and form gas bubbles due to low pressure. Concentrated implosion energy is released when the gas bubbles collapse. Damage to runner and other turbine components is inflicted when the collapse happens on or close to the material surface of these components. This leads to erosion of the components’ material, reduces turbine efficiency, and makes the turbine prone to more cavitation in the future.
