DEVICE TO ADJUST DIAMETER OF GAS-TURBINE STATOR Russian patent published in 2007 - IPC F01D11/24 F01D25/24 

FIELD: mechanical engineering; gas turbines.

SUBSTANCE: proposed device to adjust diameter of stator of gas turbine has stator including rings limiting main channel to pass gas flow and arranged opposite to movable blades of rotor, and one housing enclosing the rings. Rings are fastened to housing by means of fastening inserts, each including at least wall extending from housing to one of rings and separating two chambers. Wall has outer hook-shaped edge forming part of fastening insert coming into engagement in space between main part of housing and corresponding projecting hook-shaped part of housing. Connecting passage are made between chambers along which gas flow under pressure passes. At least one passage is formed by radial and longitudinal slots in joint of hook-shaped parts of housing and fastening insert. Radial slots made in hook-shaped part of fastening insert are arranged between longitudinal slots and they open into chambers.

EFFECT: provision of uniform blowing of stator ring surfaces without weakening of device members in which holes are made to pass gas flow.

11 cl, 9 dwg