Using Digital Models for Condition Based Maintenance of High Pressure Pumps in SWRO Desalination Plants
Abstract
Condition based maintenance (CBM) is a very
useful technique built around the concept of
monitoring the operation of assets. This allows
performing diagnostics, troubleshooting and
determining the proper maintenance action.
Conventional CBM programs are solely built around
analyzing sensors’ data collected from physical
systems. Incorporating simulation data collected from
digital replica of the system with sensors’ data can lead
to more optimization for operation and maintenance.
This paper focuses on demonstrating the role of digital
models in implementing effective condition based
maintenance on high pressure pumps in SWRO
desalination plants. Two digital models have been
developed for the high pressure pump experiencing
cavitation condition. The first digital model is a 3-D
fully turbulent Computational Fluid Dynamic (CFD)
model. Based on the pressure distribution obtained
from the CFD model, pressure pulsation due to
impeller-diffuser interaction is studied and used to
analytically model the exciting forces affecting the
rotor. The second digital model is a pump
rotordynamic model which is used to predict the rotor
vibration response to exciting forces at both normal
and faulty operating conditions. Results obtained from
the digital models are validated using an experimental
test rig of a small centrifugal pump. Using this concept,
a pump faulty operation can be simulated to provide
complete understanding of the root cause of the fault.
Additionally, digital models can be used to simulate
different corrective actions that would restore the
normal operation of the pump.
Description
LecturesCollections
Citation
Abdel Fatah, Amr; Lofty, Mohamed; Hassan, Mohammed; Dimitri, Antoine (2018). Using Digital Models for Condition Based Maintenance of High Pressure Pumps in SWRO Desalination Plants. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station. Available electronically from https : / /hdl .handle .net /1969 .1 /172512.