Kaplan turbine with new adjustment gear
The objective of the project was to develop, construct and test a single-regulated Kaplan turbine as a replacement for existing, worn out and outdated Francis turbines with standing shafts. The depth of the inflow was increased to cope with the supply of the extra water to the new Kaplan turbine. New heavy-duty gearing steps up the turbine speed to the speed required by the AS generator (765 rpm). A further new development is the equipping of the bottom guide bearing of the turbine shaft with a split self-aligning roller bearing. To prevent wear and leakage, this system is continually lubricated with grease compatible with the environment. The power increase is considerable. Annual output was increased by approximately 35 % although the water availability over this period was low due to low rainfall. All systems functioned satisfactorily and the partial load behaviour of the turbine is excellent.
Bibliographic Reference: EUR 15492 DE/EN (1994) 132 pp., FS, ECU 15
ISBN: ISBN 92-826-7823-7
Record Number: 199410977 / Last updated on: 1994-11-28
Original language: en
Available languages: de,en