FLOW PATH COMPONENTS
UPGRADES & MODERNIZATION
On aged machines significant power savings can be achieved with upgrades to modern impellers optimized by latest CAD/CAE methods to fit client gas specific parameters and deliver superior aerodynamic efficiencies.
Sometimes the original couplings are not market available anymore or user prefers to replace gear couplings by modern flexible type couplings. Often driver modernizations bring necessity to upgrade/replace also driver couplings.
RotMach can provide guidance on coupling replacements. Our evaluations include design packaging and API compliant compressor/driver lateral analysis and API compliant drivetrain torsional rotordynamics analysis to confirm coupling compatibility and expected effect on overall machinery vibration levels.
In some cases, original bearings for centrifugal compressors cannot be obtained and replacement solution is needed. Wide range of aftermarket solutions is normally available. But replacement bearings should be carefully selected to not have detrimental effect on overall rotor dynamics (machine vibrations) under full spectrum of operating and transient conditions.
We can provide bearing design packaging and comprehensive lateral rotor dynamics analysis before bearing installation to ensure successful upgrade and reliable, problem free operation.