Louver dampers for use in gas turbines exhaust systems and having blades protected against becoming warped
US4932437A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Feb 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8745
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Louver dampers for use in the exhaust system of gas turbines have flat blades each of which is provided with a lengthwise reinforcement spaced from the major portion of its face which is upstream when the damper is closed and has sides welded thereto adjacent the side margins thereof. Each side of each reinforcement has ports which ensure contact of hot gases with the portions of the blade underlying the reinforcement so that the entire surface of each blade and its reinforcement are uniformly heated preventing blade distortion that would prevent the operation of the damper and destroy the effectiveness of seals in case the damper is equipped therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.