Turbine rotor blade
US8231350B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | May 14, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/2212
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine rotor blade with a serpentine flow cooling circuit to provide cooling for the airfoil section, where the serpentine flow circuit is formed of a series of up-pass channels and at least one down-pass channel, and where the up-pass channels are formed by a series of impingement cavities separated by slanted ribs each with an impingement hole to direct impingement cooling air against the backside surface of the airfoil wall for cooling, and where the down-pass channel or channels is an open channel to minimize a pressure loss in the cooling air flow. Rotation of the blade produces a centrifugal force on the cooling air flow that increases the pressure of the impingement cooling air at the blade outer radial span wise direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.