F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
60/132
F02C 7/06 (2006.01) F01D 25/18 (2006.01)
Patent
CA 1203388
ABSTRACT Apparatus is disclosed for automatically purging oil from the jets supplying lubricant to a selected group of bear- ings and seals in a turbine engine subsequent to a shutdown. Purging prevents oil from coking as a result of heat soak back after the engine stops. To accomplish this task, pressurized air is tapped from the air plenum just downstream of the engine compressor stage. To pressurized air is stored in a small tank using an air check valve in the incoming line so that the air tank is charged to the highest pressure achieved by the engine compressor during its operation. At the outlet of the air tank there is connected one end of an air supply line whose second end is in communication with the oil jets used for lubricating the selected group of engine bearings and seals subject to being heated above 500 degrees F. during heat soak back. A snap action valve is inserted in the air supply line to activate and deactivate air flow out of the tank. Deactivation causes the snap action valve to be switched "off" whenever there is positive oil pressure in the lubricating supply line leading from the pressure pump of the turbine engine. subsequent to engine shutdown lubricant flow drops, reducing oil pressure to zero. This event coming subsequent to engine shutdown initiates the start of a delay interval after which the snap action valve is activated to its "on" state allowing the contents of the air tank to be blown through the oil jets, effectively clearing them of oil.
423208
Blake Donald
Kuintzle Charles Jr.
Lagasse Normand
Waddington Clive
Avco Corporation
Ridout & Maybee Llp
LandOfFree
Air purge system for gas turbine engines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air purge system for gas turbine engines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air purge system for gas turbine engines will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1271066