PACKING ASSEMBLY OF GAS TURBINE Russian patent published in 2017 - IPC F01D11/08 F01D11/12 F01D25/24 

FIELD: engines and pumps.

SUBSTANCE: packing assembly of the gas turbine comprises of an annular body (1) fixed to the stator of the turbine with through holes and an above-rotor insert (7) installed therein, which is segmentally arranged. The packing assembly comprises of a device for fixing the segments (8), a composite screen (23), located above the segments (8) of the above-rotor insert and arranged to overlap the gaps between the segments and forming a cavity (25) with the annular body, which communicates with the flow sections via channels (14). The device for fixing the segments (8) in the annular body is made in the form of screws (15) located in the spacer sleeves (16), locks (18) with a hole for the spacer sleeve (16), the lower part of which is installed in the segment (7) of the above-rotor insert by means of a "dovetail" joint and has an annular cut-out (20) in the expanding part.

EFFECT: invention provides a high operational reliability of the packing assembly with ceramic composite or ceramic inserts by securely fixing the segments of the above-rotor insert on the annular body, increasing the cooling efficiency of the packing assembly.

5 cl, 7 dwg