FRANCIS RUNNER FOR A HYDRAULIC MACHINE, HYDRAULIC MACHINE INCLUDING SUCH A RUNNER, AND METHOD FOR ASSEMBLING SUCH A RUNNER

摘要

The present invention relates to a Francis runner for a hydraulic machine that comprises a belt with a rotational symmetry about a central axis of the runner, a ceiling with a rotational symmetry about the axis, and a plurality of blades (21, 22) extending between the ceiling and the belt. The runner also includes at least two elements (41, 42, 43, 61, 62, 63) partially defining at least the belt and/or the ceiling while at least one edge (231, 232, 241, 242) of a blade (21, 22) is inserted between the two elements defining the belt and/or the ceiling.