DIAGNOSTIC OF CAVITATION IN HYDRAULIC MACHINERY
Abstract
An experimental investigation has been carried out to diagnose cavitation in actual hydraulic turbines from the analysis of structural vibrations and hydrodynamic pressures. The frequency content and the amplitude modulation of the signals have been studied in real Kaplan, Francis and Pump-turbine prototypes for detecting some types of cavitation like the leading edge cavitation and the draft tube swirl. The first type is erosive and the second one limits the stability of operation. The results found in the selected machines are presented. General conclusions have been obtained about the most adequate sensor, measuring location, signal processing and analysis for each type of cavitation.
Event details
- Event
- TC10 Conference 2005
- Linked User
- Dirk Röske
- Technical Committee
- TC10
- Place
- Budapest, HUNGARY
- Time
- 9 June 2005 - 10 June 2005
- Website
- http://www.conferences.hu/imeko_tc10/