GAS TURBINE ENGINE SUPPORT Russian patent published in 2010 - IPC F02C7/06 

FIELD: engines and pumps.

SUBSTANCE: has turbine engine support consists of stator with oil chamber and bearing. Oil chamber is separated from low-pressure air chamber by labyrinth seal. Low-pressure air discharge chamber inlet communicates with high-pressure chamber via labyrinth and with low-pressure chamber via intermediate labyrinth seal. Seal air chamber accommodates impeller fitted on labyrinth seal knife edge, the first on stator flange face side. Aforesaid impeller represents alternating radial slots and ledges. Radial clearance δ₂ between impeller outer surface and stator flange vs radial clearance δ₁ between first knife edge and stator flange varies from 1.5 to 3.

EFFECT: improved operating performances.

3 dwg