Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Means to seal radial flow pump runner inlet from outlet
Patent
1978-06-26
1980-12-09
Casaregola, Louis J.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Means to seal radial flow pump runner inlet from outlet
415217, F10D 1108
Patent
active
042381703
ABSTRACT:
An airfoil tip seal structure for an axial flow rotary machine is disclosed. Various concepts relating to seal designs and their influence on tip sealing effectiveness are discussed. In accordance with the teaching contained herein, one seal geometry includes a circumferentially extending groove in the stator which circumscribes the tips of the blades of a corresponding rotor stage. Another seal geometry applicable to machines having cantilevered stator vanes includes a circumferentially extending groove in the rotor which circumscribes the tips of the vanes of a corresponding stator stage. The tips of the blades and the tips of the cantilevered stator vanes run over the corresponding groove in line on line relationship with the adjacent flow path wall at the design operating condition of the machine in which the seal structure is incorporated.
REFERENCES:
patent: 591822 (1897-10-01), Curtis
patent: 1141473 (1915-06-01), Metten
patent: 2435236 (1948-02-01), Redding
patent: 2847941 (1958-08-01), Jackson
patent: 3011762 (1961-12-01), Pouit
patent: 3680977 (1972-08-01), Rabouyt et al.
patent: 3934410 (1976-01-01), Williams
Niiler Juri
Robideau Brian A.
Casaregola Louis J.
United Technologies Corporation
Walker Robert C.
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