Center-located cutter teeth on shrouded turbine blades
US6890150B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Aug 12, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine bucket includes an airfoil having a tip shroud, a shank and an entry dovetail; a tip shroud seal projecting radially outwardly from the tip shroud and extending continuously between end edges of the tip shroud in a direction of rotation of the airfoil about a turbine axis; a cutter tooth carried by the tip shroud seal for enlarging a groove in an opposing fixed shroud, the cutter tooth having a center point located with reference to X, Y and Z axes, where the X-axis extends axially in an exhaust flow direction; the Y-axis extends in a direction of rotation of the turbine bucket; and the Z-axis extends radially through the intersection of the X and Y axes; wherein the center point is located about ½ inch along the Y-axis from the X=0 position, and wherein the Z-axis is located 0.517 inches from an outside edge of a seal pin extending along said entry dovetail, as measured in a direction normal to the shank of the bucket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.