System for lubricating mechanical seals

Details System for lubricating mechanical seals System for lubricating mechanical seals

1997-11-14

2000-06-06

Freay, Charles G.

Seal for a joint or juncture

Process of dynamic sealing

Close proximity seal

277361, 417299, 417366, 417319, F04B 1700

Patent

active

060708808

ABSTRACT:
A mechanical seal combination includes a double mechanical seal and a barrier fluid pump system. A barrier fluid circulating pump 10 is coupled to rotatable shaft 3 so as to derive its motive power from the rotatable shaft. When the rotatable shaft is not running, a by-pass arrangement causes barrier fluids to flow between the barrier fluid header tank 7 and the seal 3, avoiding pump 10, and allowing a thermosyphon effect to be created.

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patent: 3378104 (1968-04-01), Venable
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patent: 4170440 (1979-10-01), Gusmer et al.
patent: 4558870 (1985-12-01), Martinez
patent: 4770601 (1988-09-01), Crisafulli
patent: 5145328 (1992-09-01), Harwath
patent: 5249812 (1993-10-01), Volden et al.
patent: 5340122 (1994-08-01), Toboni et al.
patent: 5769427 (1998-06-01), Ostrowski

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