Labyrinth seal with current-forming sealing passages

Details Labyrinth seal with current-forming sealing passages Labyrinth seal with current-forming sealing passages

1980-07-22

1982-06-22

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 57, 415111, F16J 1544, F16J 1542

Patent

active

043358861

ABSTRACT:
A labyrinth seal for sealing an impeller shaft within a pump housing. The seal includes inner and outer coaxial, relatively rotatable members secured to the shaft and the housing, respectively. Defined between the two members is a succession of axially extending sleeve-shaped passages of decreasing diameters progressing toward the pump interior, these passages being connected by radially extending disc-shaped passages. Fluid moving through the sleeve-shaped and disc-shaped passages flows into annular grooves formed at the ends of these passages, setting up currents which resist fluid flow through the seal.

REFERENCES:
patent: 1129038 (1915-02-01), Kerr
patent: 2916332 (1959-12-01), Pavlecka
patent: 3231285 (1966-01-01), Weltmer et al.
patent: 3251601 (1966-05-01), Harvey
patent: 3719365 (1973-03-01), Emmerson et al.
patent: 3797962 (1974-03-01), Stahlecker
patent: 3940153 (1976-02-01), Stocker

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