Patent ID: 11879342
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A turbine assembly extending about a longitudinal axis, this assembly comprising:
a plurality of turbine ring sectors made of ceramic-matrix composite material, assembled circumferentially end to end to form a turbine ring, each turbine ring sector comprising a base with a radially inner face and a radially outer face from which an upstream leg and a downstream leg axially spaced apart from each other radially extend outwardly,
a ring support structure, held by an outer annular turbine casing, said ring support structure comprising an annular shroud, and a plurality of angular spacer sectors together forming an annular spacer, said annular spacer being fixed to said annular shroud, and each turbine ring sector being fixed, by said legs, on said annular spacer,
at least one air diffuser, configured to diffuse cooling air on said radially outer face of at least one of said turbine ring sectors,
wherein said at least one air diffuser is mounted by interlocking on one of said angular spacer sectors, in an interlocked position,
wherein the air diffuser has an inner cavity and a radially inner face pierced with a plurality of air ejection orifices opening out into this inner cavity,
wherein each angular spacer sector has a radially inner face and has on the radially inner face of the angular spacer sector, a rectilinear interlocking slot, which has on part of a length of the rectilinear interlocking slot, an interlocking area with a T-shaped cross-section,
wherein each air diffuser is provided, in a radially outer portion of the air diffuser, with a T-shaped attachment member, configured to be able to be received and interlocked into said interlocking area,
wherein the attachment member of the air diffuser is pierced with an air intake hole opening out into said inner cavity,
and wherein each angular spacer sector comprises at least one air supply duct, opening out onto one of an upstream faces of the angular spacer sector and into a bottom of the T-shaped interlocking area of the interlocking slot, facing a mouth of the air intake hole of the attachment member of the air diffuser, when this air diffuser is in the interlocked position, so that this air supply duct is in fluid communication with said air ejection orifices.