Patent Number: 6,251,494

Title: Honeycomb structure seal for a gas turbine and method of making same

Abstract: A honeycomb structure seal is provided for the casing of a turbine, particularly a gas turbine, having a base plate facing the casing wall as well as a brush-against section facing the tips of the turbine rotor blades. The seal includes a multi-layered construction such that the base plate is adjoined by an air-evacuated honeycomb structure section which is therefore insulating in partial areas by a vacuum and which is covered by an intermediate plate, on whose side facing away from the honeycomb structure section the brush-against section is arranged. The intermediate plate is soldered to the honeycomb structure section under vacuum conditions. The brush-against section can also be constructed as a honeycomb seal, in which case the honeycomb cells of the honeycomb structure section have a significantly larger partial surface than the honeycomb cells of the brush-against section.

Inventors: Schreiber; Karl (Mellensee, DE)

Assignee: Rolls-Royce Deutschland Ltd & Co KG

International Classification: F01D 11/08 (20060101); F01D 11/12 (20060101); F01D 011/12 (); B32B 003/12 ()

Expiration Date: 06/26/2018