Turbomachine blade-to-rotor sealing arrangement

摘要

A turbomachine rotor blade having a dovetail-type base member (108), a platform (120) carried by the base member (108), and an airfoil extending longitudinally from the platform (120) in a direction opposite to that of the base member (108). The platform (120) includes a forward seal wire groove (100) and an aft seal wire groove (102), each of which is on an opposite side of the blade longitudinal axis and on the side of the platform (120) facing the base member (108). The blade platform (120) has a recess (138) that includes a concave portion (146) and an adjacent inclined ramp portion (144) for urging a seal wire (104) into surface-to-surface contact with the concave portion (146) of the recess (138). Wear of the blade platform (120) caused by seal wire (104) movement relative to the blade platform (120) is significantly reduced. <IMAGE>