Patent ID: 7805943
Filing Date: 2010-10-05
Classification: F23R

Abstract:
1. A shroud for a turbomachine combustion chamber covering a circular row of fuel injectors and an annular chamber bottom plate of the combustion chamber which supports the fuel injectors, the shroud comprising: a central portion comprising at least one opening through which supply pipes of the injectors pass; first and second concentric attachment portions that attach the shroud to the chamber bottom plate in the combustion chamber; a first side disposed between the central portion and the first attachment portion; and a second side disposed between the central portion and the second attachment portion, the second side being opposite the first side, wherein at least one of the first or second sides comprises at least one row of drillings distinct from said openings that remain open when the shroud is mounted in the combustion chamber so as to provide gas communication through said shroud via said drillings.