A CMC turbine outer ring assembly with high gas cooling efficiency and method of making

Abstract

The present application relates to the technical field of ceramic matrix composite turbine components, and discloses a CMC turbine outer ring assembly with high air cooling efficiency and a preparation method.The present application can strengthen cooling for the high heat load area of the CMC turbine outer ring arc plate, avoid local overheating, and improve temperature uniformity by arranging the cooling channel.Meanwhile, when the CMC turbine outer ring and the metal middle layer engine case are out of sync in thermal deformation, the elastic structure of the elastic impact cooling plate and the W sealing ring are coordinated to compensate for the thermal deformation difference between the CMC turbine outer ring and the metal middle layer engine case, and the thermal deformation compatibility and stability of the CMC turbine outer ring assembly are improved.The present application uses a soluble cooling channel forming embedded part to prepare the CMC turbine outer ring with internal cooling channels, realizes the optimization of the CMC turbine outer ring internal cooling channel forming process, and facilitates the manufacture of the CMC turbine outer ring.