Turbine blade with tip trench
US11293288B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2017 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/55
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine blade includes a tip cap disposed over an outer wall of a blade airfoil. A trench is defined on a radially outer side of the tip cap facing a hot gas path fluid. The trench is formed by a trench floor flanked on laterally opposite sides by first and second trench side faces such that the trench floor is located radially inwardly in relation to a radially outer surface of the tip cap. The trench extends from a trench inlet located at or proximal to an airfoil leading edge to a trench outlet located at or proximal to an airfoil trailing edge. The trench is configured to entrain a tip leakage flow from the trench inlet to the trench outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.