Liquid-cooled turbine bucket with enhanced heat transfer performance
US4142831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Jun 15, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/185
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Individual coolant passages in the airfoil portion of a liquid-cooled turbine bucket are each provided with a plurality of inwardly protruding circumferentially-extending crimps or rings located at spaced intervals along each passage, each crimp, protrusion or ring extending along the inner periphery in a plane generally perpendicular to the wall of the coolant passage at that location. The main flow of liquid coolant moving in each such individual passage during turbine operation under the combined influence of centrifugal and Coriolis forces is broken up and dispersed over an enlarged area of the interior of the coolant passage upon encountering the protrusions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.