Back to results
US 2017/0321566 A1Published application
Gas turbine with cooling of the last turbine stage
AssigneeSiemens Aktiengesellschaft
InventorMichael Wagner
Life of this patent
Estimating the term…
Abstract
An exhaust-gas section for a gas turbine, having a surrounding shroud having a first opening, which is arranged in a region of the exhaust-gas section that has a pressure lower than the air pressure of the outer environment of the gas turbine in an operating state of the gas turbine and which forms the outlet of an air channel, the inlet of which is connected to the outer environment of the gas turbine. The air channel has a chamber at the outlet-side end of the air channel, which chamber has a second opening, through which a specified gas mass flow is admitted into the chamber.
Claims11
A gas turbine having comprising:
- a stator which comprises an exhaust-gas section, the inner shroud of which is separated from the platforms of the rotor blades of the blade wheel of the last turbine stage on the hot-gas side of the rotor of the gas turbine by an axial gap, the gap connecting the exhaust-gas section to a wheel-side space of the blade wheel, said space, in one operating state of the gas turbine, having a lower pressure than the air pressure of the outside environment of the gas turbine and said space having an air inlet which is connected to the outside environment of the gas turbine via an air duct,
- wherein the air inlet is connected to the air duct via a chamber, the latter having an opening through which the chamber is acted upon by a predetermined gas mass flow.
Dependencies are inferred from the claim text.