SEALING OF HUB CAVITY OF OUTLET CASING IN GAS TURBINE ENGINE Russian patent published in 2013 - IPC F01D25/24 F01D9/02 

FIELD: engines and pumps.

SUBSTANCE: outlet casing of gas turbine engine includes two coaxial internal and external cylindrical walls connected by means of radial posts, and a cylindrical casing. Cylindrical casing is connected to rear end of radially internal wall and restricts the hub cavity together with radially internal wall and waste gas passage space together with radially external wall. Cylindrical casing is provided on its front end with a radial annular part directed inside the gas turbine engine. Radial annular part of the casing is provided on its inner end with an annular shoulder interacting due to tight radial sliding with internal cylindrical wall of the outlet casing. The other invention of the group refers to cylindrical casing for the above outlet casing, which is provided on one of its ends with an annular flange, and on the other one with a radial annular part that is directed inwards. Radial annular part is provided on its inner end with a radial annular shoulder having a cylindrical collar. One more invention of the group refers to gas turbine engine containing the above outlet casing.

EFFECT: inventions allow increasing service life of radial posts of gas turbine engine.

10 cl, 4 dwg