Abstract: A turbine casing for an axial-throughflow gas turbine surrounds at least one hot-gas space between a compressor stage and a turbine stage and has an outer shell as an external boundary and also an inner shell which is provided separately from the outer shell and which separates the hot-gas space from the outer shell via an annular space. The inner shell is connected to the outer shell via two axial interfaces, in such a way that the annular space is sealed off relative to the hot-gas space. The turbine casing withstands higher compressor final pressures and temperatures and can be produced cost-effectively.

Abstract: The present invention relates to a turbine casing for an axial-throughflow gas turbine. The turbine casing surrounds at least one hot-gas space (5) between a compressor stage (7) and a turbine stage (6) and has an outer shell (1) as an external boundary and also an inner component (2) which is provided separately from the outer shell and which separates the hot-gas space from the outer shell via an annular space (3). The inner component (2) is connected to the outer shell (1) via two axial interfaces (4), in such a way that the annular space (3) is sealed off relative to the hot-gas space (5).