Patent ID: 8282346
Filing Date: 2012-10-09
Classification: F01D,F05D

Abstract:
1. A seal formed between at least two blades in the turbine of a turbine engine, a first turbine blade and a second turbine blade, wherein one of the turbine blades comprises a turbine rotor blade and the other turbine blade comprises a turbine stator blade, and wherein a trench cavity and the seal are formed between the first turbine blade and the second turbine blade when first turbine blade is circumferentially aligned with the second turbine blade, the seal comprising: a cutter tooth and a honeycomb; wherein: further comprising a cooling air channel that is formed within the turbine blade on which the honeycomb is attached and configured to deliver a supply of cooling air to surface of the honeycomb that is attached to the blade; wherein the honeycomb and the cooling air channel are configured such that, in operation, an air curtain is formed within the trench cavity that prevents at least some ingestion of working fluid into the trench cavity; and wherein the cutter tooth is formed to deflect the flow of cooling air from the honeycomb toward the opening of the trench cavity and into flow of working fluid.