Altering a natural frequency of a gas turbine transition duct
US8418474B2 · kind B2 · utility
4Cited by
20References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | May 17, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/96
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A transition duct having a thermally free aft frame and being capable of adjusting the natural frequency is disclosed. The aft frame is capable of permitting movement due to thermal gradients with the transition duct. The transition duct utilizes a spring plate located adjacent to an aft mounting bracket, where the spring plate, based on its thickness can either increase or decrease a frequency of the transition duct. Such an arrangement ensures that the transition duct natural frequency does not coincide with or cross other critical engine and/or combustor frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.