GAS TURBINE STATOR ANNULAR HOUSING AND METHOD OF ITS COOLING Russian patent published in 2009 - IPC F02C7/12 F01D11/08 

FIELD: engines and pumps.

SUBSTANCE: device aims at cooling stator annular housing. The latter surrounds gas turbine hot gas passage and comprises annular segments attached by front and rear attachments to wed segments that form a fixed supporting web surrounding aforesaid annular housing and limiting at least one annular pressure chamber arranged between aforesaid webs. At least one cooling air feed orifice enters annular pressure chamber. Walls of every annular segment comprise air release orifices communicating pressure chamber with hot gas flow passage. Cooling device comprises additionally air-guiding device. Every aforesaid front attachment system comprises front recess in annular segment, arranged radially between front section of annular segment in contact with hot gases and front outer ledge of ledge, and front inner ledge of web segment whereto attached is the given annular segment. Front inner ledge passes axially into front recess made in annular segment. Proposed cooling device comprises also front circuit to guide air leaking from every front attachment to front annular segments to cool them.

EFFECT: higher efficiency of cooling.

11 cl, 3 dwg