Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having...
Patent
1979-05-14
1981-05-05
Casaregola, Louis J.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
415115, F02G 718
Patent
active
042655900
ABSTRACT:
A cooling air supply arrangement for a gas turbine engine comprises a rotor, a source of cooling air at a high supply pressure, a first passage adapted to transmit a first flow of said cooling air to a first area of the rotor and to reduce its pressure to a first pressure lower than said high supply pressure, and a second passage adapted to transmit a second flow of said cooling air to a second area of the rotor and to reduce its pressure to a second pressure lower than the first pressure. A seal is provided to resist flow of cooling air from said first to said second area, and in order to reduce the leakage through the seal it incorporates part of the second passage including nozzles oriented to direct at least part of said second flow against the leakage flow. In this way the leakage is reduced and simultaneously the pressure of the second flow is reduced.
REFERENCES:
patent: 2685429 (1954-08-01), Auyer
patent: 2988325 (1961-06-01), Dawson
patent: 3437313 (1969-04-01), Moore
patent: 3533712 (1970-10-01), Kercher
patent: 3635586 (1972-01-01), Kent et al.
patent: 3989410 (1976-11-01), Ferrari
patent: 4103899 (1978-08-01), Turner
Casaregola Louis J.
Rolls-Royce Limited
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