Mitigating Vortex Pumping Effect Upstream of Oil Seal

• Main Authors: LUZ, JAMES JOHN, BORDNE, CHRISTOPHER MARK, ANSTEAD, DUANE HOWARD
• Format: Patent
• Language: English; French; German
• Published: 30.10.2013
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

Oil sump seal pressurization apparatus for a turbine engine (10) are disclosed. An example oil sump seal pressurization apparatus may include an oil sump (32) comprising at least one bearing (80) mounted therein; an oil seal (68) operatively disposed between a non-rotating structural member (44) of the sump and the shaft (26); a generally radially inwardly oriented passage (62) arranged to supply pressurization air (90) to the outward side of the oil seal; a generally radially outwardly oriented pathway (58) 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 (56) disposed on the shaft, the arm rotating with the shaft; and/or a windage shield (60) at least partially separating the passage and the pathway, the windage shield being operatively mounted to the non-rotating structural member of the sump.