Multi-vane segment design and casting method
US8371808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2009 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Nov 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is an industrial gas turbine multi vane segment, which can be cast in one piece using a wax pattern method. The multi vane segment includes a platform; at least three airfoils, extending radially from the platform, having a combined airfoil volume, a chord length and an airfoil thickness; and a shroud with a shroud volume, disposed on an end of said airfoils radially distant from the platform. The ratio of the shroud volume to the combined airfoil volume defines a first ratio, while the multi vane segment has a first ratio greater or equal to 1.4:1. This ratio enables preferential solidification, during casting, of the airfoils before the shroud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.