Invention Application
US20130283757A1 MITIGATING VORTEX PUMPING EFFECT UPSTREAM OF OIL SEAL 有权
降低VORTEX泵送效应上海油封

MITIGATING VORTEX PUMPING EFFECT UPSTREAM OF OIL SEAL
Abstract:
Oil sump seal pressurization apparatus for a turbine engine are disclosed. An example oil sump seal pressurization apparatus may include an oil sump comprising at least one bearing mounted therein; an oil seal operatively disposed between a non-rotating structural member of the sump and the shaft; a generally radially inwardly oriented passage arranged to supply pressurization air to the outward side of the oil seal; a generally radially outwardly oriented pathway arranged to receive at least some of the pressurization air from the passage, the pathway being at least partially defined by a generally radially outwardly extending arm disposed on the shaft, the arm rotating with the shaft; and/or a windage shield at least partially separating the passage and the pathway, the windage shield being operatively mounted to the non-rotating structural member of the sump.
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