Hydraulic turbine
US5997242A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An hydraulic turbine includes a rotatable turbine runner. The turbine runner has a circumferential inlet for receiving a fluid and an axial outlet for discharging the fluid. The turbine runner also includes a conical-shaped hub rotatable about a central axis, the hub having a diameter that decreases in size from the inlet to the outlet, the conical-shaped hub including a base having a circumference adjacent the inlet and a surface sloping inwardly toward the central axis, the surface including a concave section facing the inlet when viewed in the meridional cross-section. The turbine runner also includes at least two helical turbine blades connected to the conical-shaped hub, each turbine blade having a leading edge adjacent to the inlet, a trailing edge adjacent to the outlet, a blade running length therebetween having a pitch, each turbine blade further including an outer edge, wherein each turbine blade winds at least halfway around the conical-shaped hub. The turbine runner also includes a shroud surface surrounding the rotatable hub, the shroud surface being defined by the outer edges of the turbine blades, the shroud surface and the hub defining a flow channel for the fluid b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.