Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1984-06-21
1987-03-10
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
415208, F01D 902
Patent
active
046487905
ABSTRACT:
In an axial turbine for exhaust gas turbochargers, the inner wall of the rotationally symmetrical exhaust gas deflection duct is designed as a deflection collar rigidly connected to the turbocharger shaft and rotating with it. The outer diameter of the deflection collar is greater than the diameter of the turbine disc and, at maximum, equal to the outer diameter of the turbine rotor. An element for contactless sealing of the exhaust gas deflection duct is provided between the rotating deflection collar and the casing. The element for contactless sealing of the deflection duct preferably consists of two labyrinth seals located on a cylindrical surface opening inwards, the sealing air being supplied radially from within between the labyrinth seals by means of a sealing air duct.
REFERENCES:
patent: 1358070 (1920-11-01), Flory
patent: 1803220 (1931-04-01), Thompson
patent: 2781999 (1955-09-01), Brennecke
patent: 2854212 (1958-09-01), Lantermann
patent: 3532444 (1970-10-01), Strub
patent: 3859008 (1975-01-01), Wiester
The Aircraft Gas Turbine Engine and Its Operation, PWA Oper. Instr. 200, United Aircraft Corporation (1970), pp. 86-89.
BBC Brown Boveri & Company Limited
Powell Jr. Everette A.
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