Part-load flow and hydraulic stability of centrifugal pumps
- Sulzer Bros. Ltd., Winterthur (Switzerland)
Unscheduled outages and deratings caused by problems with feed pumps cost utilities an estimated $460 million in replacement power costs 1985. Vibrations and pressure pulsations caused by the flow separation at partload operation are among the leading causes of feed pump failures. To reduce or avoid such failures, the flow mechanisms responsible for hydraulic instabilities must be understood. To increase this understanding was one of the main objectives of the hydraulic investigations carried out under the present research project and described in this report. A large number of parameters influencing the hydraulic performance and the stability of the head capacity characteristics have been investigated and guidelines have been derived for the selection of design parameters for impellers, diffusers, and volutes.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Sulzer Bros. Ltd., Winterthur (Switzerland)
- Sponsoring Organization:
- EPRI; Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 5782819
- Report Number(s):
- EPRI-TR-100219
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
CENTRIFUGAL PUMPS
HYDRAULICS
BOILERS
CAPACITY
FAILURE MODE ANALYSIS
FEEDWATER
MECHANICAL VIBRATIONS
PRESSURE DROP
PULSES
STABILITY
FLUID MECHANICS
HYDROGEN COMPOUNDS
MECHANICS
OXYGEN COMPOUNDS
PUMPS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
WATER
200104* - Fossil-Fueled Power Plants- Components
420200 - Engineering- Facilities
Equipment
& Techniques