| 摘要 |
The invention relates to a turbine blade (10) with an aerodynamic aerofoil (12), which extends from a bottom end (14) to a top end and comprises two aerofoil walls (16, 18) extending in between, which transversely thereto extend from a common leading edge to a common trailing edge (20), and with at least one platform (22), which extends transversely in relation to the aerofoil (12) and is arranged at one of the two ends (14) of the aerofoil (12), wherein a number of openings (28, 32) are provided in the trailing edge (20) between the bottom end and the top end. In order to reduce the thermomechanical loads in the platform (22) of the turbine blade (10), and consequently obtain a long-lasting turbine blade (10), it is provided according to the invention that either the opening (32) in the trailing edge (20) that is arranged closest to the platform surface (30) extends into the platform surface (30) or that the platform surface (30) facing the aerofoil (12) is lowered locally in the region of that opening (28) that is closest to the platform (22) concerned, and the opening (32) concerned is of such a form that it opens out into a portion (36) of the trailing edge that has become free as a result of the lowering (34). |
