Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Dynamically created seal
Patent
1988-12-12
1990-05-22
Shoap, Allan N.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Dynamically created seal
277 3, 277 25, 4151721, 4151736, F01D 514, F04D 2908, F16J 1540
Patent
active
049273272
ABSTRACT:
Instead of labyrinth seals, ordinary circular cylindrical gaps (10, 18) are provided at the positions to be sealed in the contactless centrifugal seal device for, in particular, radial turbo-machines. By means of swirl fins (12) on shrouds (7) of the rotor (2), vortex flows which rotate like solid bodies along with the rotor (2) are induced in the vortex chambers (11), the rotational motion of the particles of the medium in the radial-axial planes being reduced to a thin boundary layer. By this means, the same pressure gradient appears outside the rotor (2) in the vortex chambers (11) between the gaps to be sealed (10, 18) as appears within the rotor (2) over the length of the vane passages (4) so that leakage flows are prevented.
REFERENCES:
patent: 633732 (1899-09-01), Price
patent: 2349731 (1944-05-01), Hornschuch
patent: 2604852 (1952-07-01), Baker
patent: 2827261 (1958-03-01), Parker et al.
patent: 2971468 (1961-02-01), McDaniel
patent: 3279378 (1966-10-01), Sproule
patent: 3285501 (1966-11-01), McDonald
patent: 3614256 (1971-10-01), Sieghartner
patent: 3680976 (1972-08-01), Buse
patent: 3976165 (1976-08-01), Pilarczyk
patent: 4049361 (1977-09-01), Chacour
patent: 4076450 (1978-02-01), Ross
patent: 4209282 (1980-06-01), Eberhardt
patent: 4286919 (1981-09-01), Yamaguchi
patent: 4459802 (1984-07-01), Mowill
patent: 4521151 (1985-06-01), Frater et al.
patent: 4664592 (1987-05-01), Grzina
Machine Design, Jan. 30, 1964, Wood et al.
BBC Brown Boveri AG
Shoap Allan N.
LandOfFree
Contactless centrifugal seal device for a rotating machine part does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contactless centrifugal seal device for a rotating machine part, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contactless centrifugal seal device for a rotating machine part will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2130702