Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-09-13
1997-06-10
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 15, 277 17, 277 28, 277 59, 277 65, 277 72R, F16J 1534
Patent
active
056368470
ABSTRACT:
A seal arrangement for a stuffing box, the stuffing box having an outboard seal an inboard seal exposed to process fluid, and a volume pressurized with barrier fluid in which the inboard seal and the outboard seal are disposed, has a container divided into two non-communicating chambers by a movable wall, with a first of the chambers being supplied with barrier fluid and communicating with the space in the stuffing box in which the outboard seal is disposed, and a second of the chambers communicating with the stuffing box so as to be at the stuffing box pressure. The movable wall constantly strives to assume an equilibrium position wherein substantially no pressure differential exists across the inboard seal. Due to the absence of such a pressure differential, substantially no contamination of the barrier fluid by the process fluid occurs, and vice versa. Additionally, due to the extremely small amount of clean barrier fluid which is lost during continued operation, barrier fluid replenishment is highly simplified and maintenance-free.
REFERENCES:
patent: 943169 (1909-12-01), Strange et al.
patent: 1258218 (1918-03-01), Hicks, Jr.
patent: 2127591 (1938-08-01), Evans
patent: 2466025 (1949-04-01), Hanson
patent: 3074728 (1963-01-01), Freed
patent: 3145542 (1964-08-01), Aronson
patent: 3161413 (1964-12-01), Audemar
patent: 3176996 (1965-04-01), Barnett
patent: 3403915 (1968-10-01), Roberts
patent: 3776267 (1973-12-01), Alley
patent: 4104169 (1978-08-01), Muller et al.
patent: 4128248 (1978-12-01), Kabelitz et al.
patent: 4168070 (1979-09-01), Tsuchihashi
patent: 4460181 (1984-07-01), Araoka
patent: 4606652 (1986-08-01), Swearingen
patent: 4769992 (1988-09-01), Harada et al.
patent: 5052694 (1991-10-01), Lipschitz
patent: 5249812 (1993-10-01), Volden et al.
patent: 5305854 (1994-04-01), Wheeler
"Seals and Sealing Handbook"; Gulf publ. Co.; p. 287, Jul. 1986.
Borg-Warner Flyer and Drawing; Aug. 1976.
Chesterton International Company
Cummings Scott
Lahive, Jr. John A.
Laurentano Anthony A.
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