Set of blades for a turbine and a turbine which includes such a set of blades
US4335995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1980 |
| Grant date | Jun 22, 1982 |
| Priority date | — |
| Expiry date | Jun 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/914
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A set of blades for a turbine which includes a group of blades disposed between an upper plate (12) and a lower plate (11), the group of blades defining a group of passages (3). The set of blades includes ducts (13,23) in the upper plate (12) and/or in the lower plate (11), said ducts leading, from one end situated at a point in the neighborhood of the concave surfaces of the blades, at the constriction (10) of the passage, to its other end located at a point downstream from the set of blades. A reduction in the high pressure on the concave surfaces in only two zones, one vertically above the lower plate (12) and the other vertically below the upper plate (11), reduces secondary losses, while the distribution of the pressure remains optimum in the part of the passages where the flow is non-turbulent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.