Imperforate bowl: centrifugal separators – Including sealing means – For sealing between stationary and moving elements
Patent
1988-05-02
1989-07-11
Jenkins, Robert W.
Imperforate bowl: centrifugal separators
Including sealing means
For sealing between stationary and moving elements
277 27, 277173, B04B 900
Patent
active
048467286
ABSTRACT:
Rotating fluid-handling apparatus, e.g., a centrifugal separator has at least first and second elements which rotate relative to the other about a common axis. A seal assembly provides fluid-tight sealing between the elements, which define passages for fluid flow from one element to the other. The seal assembly has at least one annular seat carried by one of the elements coaxially with the axis, and an annular seal, the other of the elements defining a chamber for the seal in proximity to the seat. The chamber carries the seal within it coaxial with the axis, the seal being shiftable axially within the chamber between positions, in and out of sealing contact with the seat. Sealing contact with the seat is provided over an annular sealing surface area. The seal and chamber are mutually configured for causing fluid flow from one element to the other through the passages for producing shifting of the seal from the out-of-contact position to the in-contact position to cause the sealing surface area to be maintained in fluid-tight, fluid-lubricated relationship with the seat in response to pressure produced by the fluid flowing from one element to the other during rotation, yet permitting shifting of the seal to the out-of-contact position in the absence of said pressure, so as to avoid fluid-unlubricated contact of the seal with the seat.
REFERENCES:
patent: 4654023 (1987-03-01), Foldhazy
patent: 4684361 (1987-08-01), Feldman
patent: 4732323 (1988-03-01), Jarvis
Equipment Engineering, Inc.
Jenkins Robert W.
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