US 11,753,958 B2
Device for cooling an outer casing of a turbomachine and turbomachine provided with such a device
Simon Nicolas Morliere, Moissy-Cramayel (FR); Stéphane Pierre Guillaume Blanchard, Moissy-Cramayel (FR); and Nicolas Jean-Marc Marcel Beauquin, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/633,834
Filed by Safran Aircraft Engines, Paris (FR)
PCT Filed Aug. 6, 2020, PCT No. PCT/EP2020/072114
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/028307, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. FR1909093 (FR), filed on Aug. 9, 2019.
Prior Publication US 2022/0228504 A1, Jul. 21, 2022
Int. Cl. F01D 25/12 (2006.01); F01D 11/24 (2006.01); F01D 25/14 (2006.01); F01D 25/28 (2006.01); F02C 7/18 (2006.01)
CPC F01D 11/24 (2013.01) [F01D 25/12 (2013.01); F01D 25/14 (2013.01); F01D 25/28 (2013.01); F02C 7/18 (2013.01); F05D 2220/323 (2013.01); F05D 2250/241 (2013.01); F05D 2260/201 (2013.01); F05D 2260/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device for cooling, using air jets, an outer casing of a turbomachine, the cooling device comprising a housing for supplying air to cooling tubes of the outer casing, said housing comprising an upstream end and a downstream end, upstream and downstream being defined relative to the flow direction of the flow in said turbomachine, wherein said housing comprises an attachment device on said outer casing, wherein the attachment device comprises two upstream retention devices using ball joint connection, configured to connect the upstream end of the housing to an outer face of the outer casing while allowing movement of the upstream end relative to the outer face of the outer casing, wherein each of the upstream retention devices comprises a cupped washer and a recessed washer, the cupped washer comprising a cupped face received in a concave face of the recessed washer, the cupped washer being able to move relative to the recessed washer to form the ball-joint connection and wherein at least one of the two upstream retention devices comprises a lateral flange attached to the housing and a connection assembly attached to the outer casing, the connection assembly comprises a connecting screw attached to a boss and a hollow cylindrical socket, the hollow cylindrical socket having a part with a large cross section for receiving a head of the connecting screw, the part with the large cross section having, at an outer end, a first shoulder forming a stop for an elastic return member in a radial direction of the cooling device and the part with the large cross section being extended at an inner end of the part with the large cross section by a part with a narrow cross section for receiving a body of the screw, wherein the part with the narrow cross section of the socket is housed both in an opening of the lateral flange attached to the housing and in a central orifice provided in the cupped washer of the at least one of the two upstream retention devices.