Patent ID: 8534675

Claim:
A strip seal for sealing two adjacent non-rotating components of a gas turbine, the components comprising complimentary grooved recesses configured and arranged to receive the strip seal so that the strip seal, when received into the grooved recesses, extends between the components to provide a seal between a higher pressure medium and a lower pressure medium acting on the components, wherein the strip seal is constituted by a material having a dynamic modulus of at least one of approximately 232 GPa at a temperature of 20° C., approximately 217 GPa at a temperature of 200° C., approximately 201 GPa at a temperature of 400° C., approximately 184 GPa at a temperature of 600° C., approximately 176 at a temperature of 700° C., approximately 169 GPa at a temperature of 800° C., approximately 161 GPa at a temperature of 900° C., and approximately 153 GPa at a temperature of 1,000° C.; wherein the strip seal comprises: a pressure face configured to be acted upon by the higher pressure medium; a sealing face configured to be acted upon by the lower pressure medium; a first end; a second end; a length extending between the first end and the second end; a width extending substantially normal to the length; at least two clamping projections distributed along discrete points of the length, the at least two clamping projections extending from the pressure face and configured to prevent localized movement of the strip seal when fitted; and a thickness defined as a distance free of projections between the pressure face and the sealing face; and wherein the strip seal has: a first ratio of the length of the strip seal extending free of clamping projections from any one of the ends to a clamping projection, to the thickness, of less than 25; a second ratio of the length of the strip seal extending free of clamping projections between any two of projections, to the thickness, of less than 200; and a natural frequency that is changed to be different from a pulsation frequency of the gas turbine.