Turbomachine interstage seal assembly

Rotary kinetic fluid motors or pumps – Including thermal expansion joint – Radially sliding

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Details

415172A, 277 53, F16J 1550

Patent

active

039415007

ABSTRACT:
A simplified interstage seal assembly for a turbomachine utilizing an abradable semicircular seal slidably held radially inwardly of a stator shroud by a pair of semicircular seal holders. The seal holders are retained between radially depending flanges of shroud segments, with each holder having a key portion projecting through radial slots in the flanges for guided radial expansion or contraction. The holders, after insertion of the keys in the slots, are spatially separated a predetermined distance and maintained in the separated and engaged position by engagement of a seal ring which is supported in the seal holders, in a track and channel arrangement, with a portion of the seal ring disposed in the space between the opposed seal holders to prevent axial displacement of the seal holders and thereby retain the key portions thereof within the slots of the flange.

REFERENCES:
patent: 2738949 (1956-03-01), Wilkinson
patent: 3411794 (1968-11-01), Allen
patent: 3529904 (1970-09-01), Scalzo et al.
patent: 3829233 (1974-08-01), Scalzo et al.

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