Turbine shaft

Details Turbine shaft Turbine shaft

1983-11-30

1986-04-29

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

417407, F02B 1700, F16N 704

Patent

active

045853967

ABSTRACT:
A turbine having an improved connection between a ceramic rotor and a metal turbine shaft. The juncture between the rotor and the turbine shaft is disposed between a bearing supporting the turbine shaft and a sealing ring isolating the rotor from the oil reservoir of the turbine. A groove is formed at the juncture. Oil is allowed to circulate around the groove at the juncture between the rotor and the shaft, thereby providing a lowered temperature of the juncture, and hence preventing separation between the rotor and shaft due to differences in coefficients of thermal expansion.

REFERENCES:
patent: 2646210 (1953-07-01), Kohlmann et al.
patent: 2703674 (1955-03-01), Wood
patent: 3054554 (1962-09-01), Buchi
patent: 3961867 (1976-06-01), Woollenweber
patent: 4063850 (1977-12-01), Hueber et al.
patent: 4279576 (1981-07-01), Okano et al.
patent: 4335998 (1982-06-01), Siebels
patent: 4349203 (1982-09-01), Schulke
patent: 4358253 (1982-11-01), Okano et al.
patent: 4424003 (1984-01-01), Brobeck
patent: 4427309 (1984-01-01), Blake

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