SYSTEM TO ENSURE TIGHTNESS BETWEEN OIL CAVITY AND ADJACENT EXTERNAL SPACE AND TURBO MACHINE EQUIPPED WITH SUCH TIGHTNESS SYSTEM Russian patent published in 2017 - IPC F01D11/00 

FIELD: turbo-machine.

SUBSTANCE: invention discloses system to ensure tightness between oil cavity and adjacent external space and turbomachine, equipped with such sealing system. According to invention sealing system between oil cavity (1, V1) and adjacent external space (V2), which are restricted by rotor (5), rotating around axis (L-L), and structural element, stationary or moving (7), comprises: first sealing gasket (10A), located between rotor (5) and structural element (7); second sealing gasket (10B), which is installed between rotor (5) and structural element (7) and displaced in lengthwise direction relative to first sealing gasket (10A) so, that with the first sealing gasket make sealed chamber (12), limited by rotor (5), structural element (7) and two sealing gaskets (10A, 10B); and gas (G) supply device (13) to sealed chamber (12) in order that gas (G) can be compressed by rotation of rotor (5); wherein chamber communicates with oil cavity and/or adjacent external space only through first and second sealing gasket, respectively.

EFFECT: enabling tightness between oil cavity and adjacent external space.

9 cl, 1 dwg