Static sealing mechanism for liquid natural gas compressors and

Details Static sealing mechanism for liquid natural gas compressors and Static sealing mechanism for liquid natural gas compressors and

1976-10-29

1978-02-28

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277 74, 277 75, F16J 1534

Patent

active

040762599

ABSTRACT:
A system preventing high pressure fluid leakage from a liquid natural gas compressor casing or hydrogen cooled generator casing to the atmosphere. Sealing the clearance between a non-rotating shaft and the casing through which it extends is provided by a multi-faced piston which can be axially displaced to contact a sleeve or shoulder which is attached to and surrounds a given length of the shaft. The multi-faced piston is slidably actuated to the open, unsealed position during shaft rotation and to the closed, sealed position during non-rotation of the shaft. This is accomplished by a series of conduits and valves which direct high pressure and low pressure gas against the appropriate faces of the multi-faced piston.

REFERENCES:
patent: 3051497 (1962-08-01), Wigg et al.
patent: 3062554 (1962-11-01), McGahan et al.
patent: 3093382 (1963-06-01), Macks
patent: 3410565 (1968-11-01), Williams
patent: 3511510 (1970-05-01), Lindeboom
patent: 3622164 (1971-11-01), Herbert et al.
patent: 3679217 (1972-07-01), Lesiecki
patent: 3759532 (1973-09-01), Lindeboom
patent: 3926442 (1975-12-01), Muller
patent: 3937477 (1976-02-01), Gyory
patent: 3963247 (1976-06-01), Nommensen

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