SEAL FOR GAS TURBINE ENGINE UNLOADING VALVE SEALING GASKET Russian patent published in 2023 - IPC F01D25/28 F02C7/28 F16J15/02 

FIELD: gas turbine engines.

SUBSTANCE: invention relates to the unloading valves of the casing of a gas turbine engine and, in particular, the intermediate casing of a gas turbine engine. The object of the invention is a sealing gasket (20) made with the possibility of being installed on the first element of the gas turbine engine (100), such as the valve (16) of the unloading valve (10), and with the possibility of bearing on the second element (11, 12, 128) of the gas turbine engine, such as the hub (11) of the intermediate casing (12). Said sealing gasket comprises: engagement means (21) for mounting said gasket on said first element, having a generally U-shape; a sealing lip (24) providing airtightness due to contact and designed to bear on said second element (11, 12, 128); means (23) for preventing unbending of said sealing lip (24), increasing the rigidity of the sealing gasket (20) at the base of the sealing lip (24); hinge (22) having a curved section (22a) with a generally C-shape, and located between the engagement means (21) and the means (23) to prevent extension, and in general the C-shape has a direction of curvature opposite to the first parts (21).

EFFECT: sealing gasket allows precise control of the unloading valves.

10 cl, 7 dwg