Machined blocks ease job of separating generator rotor from Francis-type turbine
Journal Article
·
· Hydro Review; (United States)
OSTI ID:5498526
- Bureau of Reclamation, Hungry Horse, MT (United States)
The Bureau of Reclamation has designed a new method of separating the generator rotor from a hydraulic turbine. Before disassembly, workers measure the distance from the top of the discharge ring to the bottom of the turbine runner, at 10 to 12 locations around the discharge ring. Mechanics then machine steel blocks to the exact measurement for each location. Workers then use the generator's braking system to jack up the generator, and then set the steel blocks in place on the discharge ring. The generator is then lowered onto the jacking block, which supports the rotor. The turbine runner barely touches the steel blocks. The coupling bolts are then removed and the rotor lifted out. Since the elevation of the turbine runner is not significantly changed, reassembly is a matter of setting the rotor in place. This method has saved manhours of labor and has increased worker safety by decreasing workers' handling of heavy equipment.
- OSTI ID:
- 5498526
- Journal Information:
- Hydro Review; (United States), Journal Name: Hydro Review; (United States) Vol. 10:3; ISSN HYREE8; ISSN 0884-0385
- Country of Publication:
- United States
- Language:
- English
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