EDI offers expertise in lateral rotodynamic analyses and torsional vibration testing for water systems. From vibration testing to bearing failure analysis, we can troubleshoot a wide range of pumps, whether for wastewater treatment, cooling water, flood control, or transporting drinking water from reservoirs.
Services
- Rotordynamics
- Torsional Vibration
- Structural Finite Element Analysis
- Field Measurements
- Pressure Pulsation / Acoustic Resonance Analyses
- Analysis Reports & Independent Reviews
- Cavitation
- End Bell Design
- Flexible Volutes
- Recirculation
- Reed Frequency
- Up Thrust of Vertical Pump
Equipment
- Blowers
- Floor supports
- Gearbox Pumps
- Horizontal Pumps
- Bearing Housing
- Pump Shafts
- Right-angle Gearbox
- Multi-stage Pumps
- Vertical Turbine Pumps
- VFD Motors
Expertise
Water is becoming a valuable commodity. EDI is an expert in analyzing and troubleshooting pumps whether for wastewater treatment, cooling water, flood control, or transporting drinking water from reservoirs. EDI has helped with projects in King County, SNWA, Tarrant County, St. Louis Metro, Boston, Honolulu, Puerto Rico, Turkey and others.
EDI has measured vibration of pumps bearing housings, gearboxes, etc. Reed frequency of vertical pump and/or motor can be calculated and verified with impact tests.
At wastewater treatment plants, blowers can be engine driven or motor driven. Engines can be running on biogas and subject to misfire conditions. EDI has acquired torsional vibration readings to ensure the specifications were met. EDI has also balanced motors driving blowers.
Torsional vibration problems due to engine excitation, VFD motors, etc. Some more complicated systems utilize both motor and engine drives that can be swapped during emergency situations through clutches.
EDI can perform pulsation and vibration measurements to check for end bell design and recirculation. Pressure pulsation, acoustic resonances, and cavitation problems are diagnosed using pressure measurements and acoustic analysis.
Structural vibration of supports or floor can be verified during operation or with a shaker test. If volutes and pump housing are too flexible, then small pressure pulsation can cause vibration at top bearing that may exceed allowables.
It is important to review specifications carefully. There could be conflicting or ambiguous statements that should be clarified prior to starting the project. EDI can provide an independent review of analysis reports.
EDI has registered professional engineers (PEs) on staff with years of experience with pumping systems. Can perform field verification after initial analysis is work complete in accordance with many specifications.
