TURBINE DISC COOLING DEVICE Russian patent published in 2008 - IPC F02C7/12 

FIELD: machine builiding.

SUBSTANCE: high and low pressure turbine disks cooling device comprises a platform with openings, that holds stationary blades of the low pressure turbine distributor, front and back ring flanges. The front and back ring flanges limit the cavity for air cooling, the cavity is devided into inner and outer zones. The cooled air gets into those zones from cooling circuit of the stationary blades through the openings in the platform. The outer zone is connected with the inner one with matching bores axially aligned with the openings of the platform. A sealing element is situated between the front and back flanges and pressurises the cavity for air cooling. There are openings for feeding the cooled air for low and high pressure turbine disks cooling in the radial walls of the inner zones.

EFFECT: increased effectivity of the turbine disks cooling device, reduced pressure loss with total sealability.

15 cl, 7 dwg