Siemens Energy, Inc.

Joshua D Kovac

Jiping Zhang

Hubertus Edward Paprotna

Yan Yin

Patrick M Pilapil

An interstage seal system () for adjusting the position of an interstage seal during operation of a gas turbine engine () to increase efficiency of the seal () is disclosed. The interstage seal system () may include a interstage seal housing () formed from a circumferentially extending housing having a seal () positioned on a radially inward surface () of the interstage seal housing (). The interstage seal housing () may biased radially outward via one or more springs () to bias the radially inward surface () of the interstage seal housing () outwardly. The interstage seal housing () may reside in an interstage housing receiving cavity (). The cavity () may be supplied with gases at a higher pressure than on the other side () of the seal housing () during turbine engine operation. As such, the interstage seal housing () is forced radially inwardly to close the gap () within the seal () as the high pressure force directed radially inward overcomes the spring bias directed radially outward.

Interstage seal housing optimization system in a gas turbine engine

A seal assembly () for a gas turbine engine (). The seal assembly () includes a first seal member () including an abradable structure having at least first and second seal portions () radially spaced from each other, and a second seal member () including first and second seal surfaces () located in facing relationship to the first and second seal portions (), respectively. The first seal member () is formed of a honeycomb structure, and the first seal portion () of the first seal member () is a thin fin-like structure having a width in the axial direction of the turbine engine () that is less than the width of the second seal portion () in the axial direction.

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Oviedo, FL, United States of America

Joshua D Kovac