CASE FOR TURBINE, TURBINE AND TURBO-MACHINE CONTAINING SUCH TURBINE Russian patent published in 2011 - IPC F01D11/24 F01D25/14 

FIELD: machine building.

SUBSTANCE: case of turbine consists of radial wall. On its internal surface it has a support for securing a ring surrounding movable blades of the turbine. The support has a periphery wall enveloping the ring coaxially with it. The case has multitude of perforations supplying air for uniform ventilation of external surface of the periphery wall. Perforations are formed through the radial wall of the case passing radially inside. In essence the wall envelops a ventilation chamber also formed with internal surface of the case and external surface of the periphery wall of the support. The ventilation chamber has a small orifice between a radial rib of the support and internal surface of the radial wall for discharge of air from the chamber. Other inventions of the group also refer to the turbine consisting of the above said case, and to the turbo-machine including such turbine.

EFFECT: increased uniformity of temperature field of support of ring fastener enveloping movable blade of turbine.

6 cl, 3 dwg