Combustion chamber assembly having a transition duct damping member
US6148604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A combustion chamber assembly comprises a plurality of three stage lean burn combustion chambers (28) each of which comprises a primary combustion zone (36), a secondary combustion zone (40) and a tertiary combustion zone (44). Each of the combustion zones (36,40,44) is supplied with premixed fuel and air by respective fuel and air mixing ducts (76,78,80,92). A plurality of transition ducts (118) are provided at the downstream ends of the combustion chambers (28) to receive the exhaust gases. A damping ring (130) is connected to all of the transition ducts (118) by bolts (138) which pass through apertures (128) in flanges (126) on the transition ducts (118). The bolts (138) are biased by springs (142) such that frictional contact between the damping ring (130) and the flanges (126) damps harmful vibrations in the transition ducts (118).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.