Patent ID: 6431555
Filing Date: 2002-08-13
Classification: F01D,F05D,F16J

Abstract:
In a turbine having radially spaced inner and outer casings and generally annular sealing surfaces, a seal for sealing across the sealing surfaces and between high and low pressure regions on opposite sides of the seal, said seal comprising:first and second seal segments disposed in a generally common plane in end-to-end relation to one another, a first end of said first segment having a projection and a second end of said second segment in opposition to said first end having a recess for receiving the projection, said first and second ends having edges defining circumferentially extending gaps therebetween; said projection having radially spaced edges for sealingly engaging the respective sealing surfaces of the inner and outer casings; and radially spaced edges of said recess in opposition to respective edges of said projection defining radial gaps therebetween each having a smaller gap width than the width of each of the circumferential gaps between said first and second ends.