Abstract: A seal plate system (24) for a rotor in a turbine engine. The rotor includes a rotor disc (10) for supporting a plurality of blades (16), and an annular groove (32) provided in the disc (10) adjacent at least one end (30) of the disc (10). A plurality of plate structures (60) are provided supported between the annular groove (32) of the disc (10) and a groove (56) formed in a platform (26) of the blade (16) adjacent an end (30) of the disc (10). The plate structure (60) includes a plate (64) and an elongated resilient locking pointer (66) extending from the plate (64) for engaging in a lock notch (98) formed in an outer wall (38) of the annular groove (32). The locking pointer (66) forms a self-locking feature that is biased into the lock notch (98) as the plate structure (60) is moved into position on the disc (10).

Abstract: A seal plate system (24) for a rotor in a turbine engine. The rotor includes a rotor disc (10) for supporting a plurality of blades (16), and an annular groove (32) provided in the disc (10) adjacent at least one end (30) of the disc (10). A plurality of plate structures (60) are provided supported between the annular groove (32) of the disc (10) and a groove (56) formed in a platform (26) of the blade (16) adjacent an end (30) of the disc (10). The plate structure (60) includes a plate (64) and an elongated resilient locking pointer (66) extending from the plate (64) for engaging in a lock notch (98) formed in an outer wall (38) of the annular groove (32). The locking pointer (66) forms a self-locking feature that is biased into the lock notch (98) as the plate structure (60) is moved into position on the disc (10).

Abstract: A rotating blade group 90 for a turbo-machine having an improved device for sealing the gap 110 between the edges 112,114 of adjacent blade platforms 96,104. The gap 110 between adjacent blades 92,100 is sealed by a seal pin 20 its central portion 110 and by a seal plate 58,60 at each of the front 54 and rear 56 portions. The seal plates 58,60 are inserted into corresponding grooves 62,64 formed in the adjacent edges 112,114 of adjoining blades 92,100 and held in place by end plates 40,42. The end of the seal plates 58,60 may be chamfered 78,80 to improve the seal against the end plate 40,42. The seal pin 20 provides the required damping between the blades 92,100 and the seal plates 58,60 provide improved sealing effectiveness.