Configuration of a coolable turbine blade

Abstract

The invention relates to a turbine blade (1) through which cooling liquid flows and which comprises several flow channels (4, 5, 6) that are adjacently arranged in the flowing-off direction (2) of the working fluid (3). Said flow channels (4, 5, 6) extend between inflow openings (7, 8, 9), which are located on a radially inner blade foot (10), and outflow openings (11, 12, 13), which are situated opposite the blade foot in a more radially outer manner. The flow channels (4,5,6) extend such that the local radial flow components (15) of the resulting cooling fluid stream (14) are directed outward in a, for the most part, predominantly radial manner. A flow channel (4), which is in the front when viewing in the flowing-off direction (2), is provided whose outflow openings (11) are placed inside a touching edge (16) of the turbine blade (1). In addition, at least one rear edge channel (5, 6) is provided whose associated resulting cooling fluid stream (14) additionally comprises local cross-flow components (17) and whose outflow openings (12, 13) are placed inside a rear edge (16) of the turbine blade (1).

Dependencies are inferred from the claim text.