TURBOMACHINE MODULE EQUIPPED WITH RADIAL GAP IMPROVEMENT DEVICE Russian patent published in 2013 - IPC F01D11/18 

FIELD: machine building.

SUBSTANCE: turbomachine module equipped with radial gap improvement device includes outer casing, inner casing and at least one damper ring attaching the casings to each other; at that, module also includes annular cavity on the outlet side of damper ring with a channel made in it, through which air flow is removed from the main flow. According to the invention, radial gap improvement device includes thermal inertia adjustment device for damper ring, which is installed on damper ring, downstream of it; at that, device includes at least one heat-insulating coating and at least partially restricts the annular cavity on its outlet side.

EFFECT: invention allows adjusting a radial gap of turbomachine without decreasing its efficiency; simplifying the turbomachine manufacturing process.

16 cl, 7 dwg