Rotary shaft sealing assembly

Dietle, Lannie L; Schroeder, John E; Kalsi, Manmohan S; Alvarez, Patricio D

Title: Rotary shaft sealing assembly

Patent · Tue Aug 13 00:00:00 EDT 2013

OSTI ID:1093224

Dietle, Lannie L; Schroeder, John E; Kalsi, Manmohan S; Alvarez, Patricio D

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

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Research Organization:: Kalsi Engineering, Inc. (Sugar Land, TX)

Sponsoring Organization:: USDOE

DOE Contract Number:: ACO3-90ER80939

Assignee:: Kalsi Engineering, Inc. (Sugar Land, TX)

Patent Number(s):: 8,505,924

Application Number:: 12/886,364

OSTI ID:: 1093224

Country of Publication:: United States

Language:: English

References (82)

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