Accession Number : ADP000355

Title :   Measurement of Interstage Fluid-Annulus Dynamical Properties,

Corporate Author : AKRON UNIV OH

Personal Author(s) : Adams,M. L. ; Makay,E. ; Diaz-Tous,I. A.

Report Date : 1982

Pagination or Media Count : 10

Abstract : The work described in this paper is part of an Electric Power Research Institute sponsored effort to improve rotor vibrational performance on power plant feed water pumps. A major objective of this effort is to reduce vibration levels by devising inter-stage sealing configurations with optimized damping capacity, realizing that the typical multi-stage centrifugal pump has several more inter-stage fluid annuli than it has journal bearings. Also, the fluid annuli are distributed between the journal bearings where vibration levels are highest and can therefore be 'exercised' more as dampers than can the bearings. Described in this paper is a test apparatus which has been built to experimentally determine fluid-annulus dynamical coefficients for various configurations of inter-stage sealing geometry.

Descriptors :   *Turbomachinery, *Electric power plants, *Rotors, *Vibration, *Stability, *Workshops, Centrifugal pumps, Journal bearings, Rings, Sealed systems, Damping

Distribution Statement : APPROVED FOR PUBLIC RELEASE