Method of assembling a turbine runner situated in a water passageway
US6016600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Jan 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4932
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of assembling a turbine runner while it remains situated in a water passageway. The turbine runner comprises a hub having a longitudinal axis, spaced apart outer and inner surfaces defining a cavity, and a corresponding plurality of blades pivotally connected to the hub. Each blade has a trunnion and is supported in rotation by an associated blade support assembly including at least one trunnion bushing. The cavity substantially encloses the support assemblies. The method comprises the steps of assembling a maintenance platform in the water passageway below the runner, installing for at least one of the blades a new trunnion bushing in the associated blade support assembly, and removing the maintenance platform from the water passageway. The hub has an inner hub for supporting the trunnion bushing, and the inner hub may be split into upper and lower inner hubs which may be uncoupled for installing the new trunnion bushing. The runner is surrounded by a discharge ring for directing a flow of water past the runner blades. The discharge ring may include a pocket configured to receive a distal end of one blade. The blade may be slid outwardly into the pocket to obtain addition…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.