Patent ID: 7234918
Filing Date: 2007-06-26
Classification: F01D

Abstract:
1. A sealing system for a turbine engine comprising; a rotating turbine engine component having an axis of rotation, the rotating component including first and second axially extending arms separated by a third axially extending arm, wherein the first axially extending arm provides a first surface and the second axially extending arm provides a third surface; and a stationary turbine engine component disposed substantially proximate to the rotating component, the stationary component including fourth and fifth axially extending arms separated by a sixth extending arm, wherein the fourth axially extending protrusion provides a second surface, wherein the first and second surfaces are angled relative to the axis of rotation and to each other, the first and second surfaces being axially opposed and axially spaced from each other so as to form a gap axially therebetween and the fifth axially extending arm provides a fourth surface, wherein the third and fourth surfaces are angled relative to the axis of rotation and to each other, the third and fourth surfaces being axially opposed and axially spaced from each other so as to form a gap axially therebetween, wherein third and sixth axially extending arms are generally parallel to each other, are offset radially from each other and extend axially past each other to form sealing surfaces on radial surfaces facing each other; wherein at least one of the rotating turbine engine component and the stationary turbine engine component is selectively axially movable, wherein the widths of the gaps are adjustable by selective axial movement of at least one of the rotating turbine engine component and the stationary turbine engine component, whereby leakage through the gaps is controlled.