Hybrid seal for a gas turbine

摘要

A seal (20) having a first seal mechanism (24) adapted for insertion between a first structure (16) and a second structure (18), wherein the first structure (16) is in communication with a first medium (22) and the second structure (18) is in communication with a second medium (30). The seal (20) also includes a second seal mechanism (26), which is pressuringly biasable against the first seal mechanism (24) and against the second structure (18) by the second medium (30). In certain embodiments, a system has a first structure (18) in communication with a first medium (22) and a second structure (18) houses a seal assembly (20) between the first (16) and second structures (18). The seal assembly (20) includes an interface seal (24) disposed against the first structure (16) and a flexible seal (26) pressuringly biased against the second structure (18) and the interface seal (24) by a second medium (30).