General Electric Company

Paul C Daiber

William L Bird

Anthony Paul Greenwood

Scott Chandler Morton

Ted E Bailey

Michelle L Taylor

Alexander E Vermejan

In a seal oil system utilized to supply oil to shaft seals of a generator for preventing pressurized gas inside the generator from escaping through an interface of the generator shaft and the generator frame, wherein seal oil is supplied to said seals via a main supply line at a predetermined pressure, the improvement comprising at least one differential pressure accumulator including a barrel having an upper inlet end and a lower outlet end, and a piston slidably mounted in said barrel and movable between said inlet end and said outlet end; a first chamber above said piston having liquid supplied thereto at a pressure equal to internal gas pressure of the generator; a second chamber below said piston charged with generator seal oil; and means for enabling said at least one accumulator to discharge generator seal oil to said main supply line upon temporary decrease in pressure in said main supply line.

Differential pressure accumulator

Seal oil supply system using differential pressure accumulator

A fan-jet gas turbine engine heat exchanger is cooled by fan air taken from the fan duct at a relatively high pressure region of the fan nozzle upstream of the fan nozzle's throat and exhausted into a relatively low pressure region of the fan nozzle upstream of the throat. One embodiment provides a cooling air duct with a forward facing scoop at the duct's inlet for capturing cooling air and providing greater dynamic pressure recovery. A diffuser is located upstream of the heat exchanger and a nozzle is located downstream of the heat exchanger with a nozzle exit that forms the cooling duct outlet and an aft facing scoop over the outlet.

Gas turbine engine fan cooled heat exchanger

A bearing assembly includes a split inner race disposed on a distal end of an output shaft disposed coaxially about an input shaft. A plurality of bearing elements are disposed around the inner race, with a stationary outer race surrounding the elements. The inner race includes a plural number A.sub.1 of radially extending splitline channels in flow communication with a circumferential splitline manifold between the inner race and the output shaft distal end. A first half of the inner race includes a plural number B.sub.1 of radially extending first channels disposed in flow communication with a circumferential first manifold defined between the inner race first half and the output shaft distal end for channeling oil to the cage. The output shaft distal end includes a number A.sub.2 of axial splitline feed groves joined in flow communication with a respective number of radial splitline feed holes therein for channeling oil to the splitline maniflod, and a number B.sub.2 of axial first-manifold feed grooves joined in flow communication with a respective number of radial first-manifold feed holes therein for channeling oil to the first manifold. The numbers A.sub.2 and B.sub.2 are less than A.sub.1 and B.sub.1, respectively.

Lubricated bearing assembly

Growing community of inventors

Cincinnati, OH, United States of America

Paul C Daiber