US 12,385,440 B2
Fire safety system for a turbomachine comprising means for maintaining a cooling air speed and corresponding turbomachine
Stéphane Raphaël Yves Richard, Moissy-Cramayel (FR); Jean-Luc Breining, Moissy-Cramayel (FR); Mathieu Pierre Cladiere, Moissy-Cramayel (FR); Olivier Pierre Descubes, Moissy-Cramayel (FR); Jerome Dinquel, Moissy-Cramayel (FR); Gabriel Gorka Exilard, Moissy-Cramayel (FR); Bertrand Guillaume Robin Pellaton, Moissy-Cramayel (FR); Nicolas Christophe Perra, Moissy-Cramayel (FR); and Christophe Nicolas Henri Viguier, Moissy-Cramayel (FR)
Assigned to SAFRAN HELICOPTER ENGINES, Bordes (FR)
Appl. No. 18/576,677
Filed by SAFRAN HELICOPTER ENGINES, Bordes (FR)
PCT Filed Jul. 7, 2022, PCT No. PCT/FR2022/051362
§ 371(c)(1), (2) Date Jan. 4, 2024,
PCT Pub. No. WO2023/281221, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 2107487 (FR), filed on Jul. 9, 2021.
Prior Publication US 2024/0318602 A1, Sep. 26, 2024
Int. Cl. F02C 7/25 (2006.01); B64D 45/00 (2006.01); F01D 25/12 (2006.01)
CPC F02C 7/25 (2013.01) [B64D 45/00 (2013.01); F01D 25/12 (2013.01); B64D 2045/009 (2013.01); F05D 2260/232 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An assembly for a turbomachine, the assembly comprising at least one turbine having a turbine disc, an annular cavity arranged upstream of the turbine disc which comprises an internal bore and a cooling device configured to supply the annular cavity with cooling air via injection means, the assembly further comprising a fire safety system having means configured to divide the annular cavity into a first cavity and a second cavity and, to maintain a speed of the cooling air at the outlet of the injection means and to guide the cooling air in the first cavity towards the internal bore of the turbine disc, the means comprising a diffuser cooperating with the injection means and an annular cowling configured to cooperate with the diffuser and to cover first attachment arranged in the annular cavity, the diffuser and the annular cowling being configured such that the cooling air leaving the diffuser is guided at least in part by a radially external surface of the annular cowling.