Automatic control device of a labyrinth seal clearance in a turb

Details Automatic control device of a labyrinth seal clearance in a turb Automatic control device of a labyrinth seal clearance in a turb

1985-09-26

1987-05-26

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With diversely oriented inlet or additional inlet for...

415115, F01D 2512

Patent

active

046681639

ABSTRACT:
An assembly to control automatically the clearance of a labyrinth seal of the turbo machine, including a stator member is provided which includes an annular chamber supplied with a hot air flow through orifices and a colder air flow supplied through apertures formed in the radially inner part of the stator member constituting the annular carrier of a wear seal member which forms with tips carried by the one part of the rotor the labyrinth seal, these apertures being disposed upstream of the seal. The apertures lie in the zone of corresponding parts of the carrier and of the rotor part which are so shaped as to create a annular convergent-divergent annular nozzle forming a throat. The clearance of the seal is maintained constant due to relative variations effected in the air flows and, in the sense of heating up in the case of a reduction of clearance and in the sense of cooling down in the case of an increase in clearance.

REFERENCES:
patent: 3018085 (1962-01-01), Welsh
patent: 3527053 (1970-09-01), Horn
patent: 3989410 (1976-11-01), Ferrari
patent: 4060250 (1977-11-01), Davis
patent: 4103899 (1978-08-01), Turner
patent: 4177004 (1979-12-01), Riedmiller et al.
patent: 4295787 (1981-10-01), Lardellier
patent: 4320903 (1982-03-01), Ayache et al.
patent: 4466239 (1984-08-01), Napoli et al.
patent: 4513975 (1985-04-01), Hauser et al.
patent: 4526226 (1985-07-01), Hsia et al.
patent: 4527385 (1985-07-01), Jumelle et al.
patent: 4554789 (1985-11-01), Napoli et al.
patent: 4573865 (1986-03-01), Hsia et al.

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