METHOD OF MANUFACTURING A DOUBLE-ROW BLADE WHEEL FOR A FLOW ENGINE AND DOUBLE-ROW BLADE WHEEL

摘要

The invention relates to a method for producing a double-row blade wheel (1) for a turbomachine, which comprises a first grid row (11) with a plurality of first blades (21) and a second grid row (12) with a plurality of second blades (22). The method comprises the steps of: producing the first grid row (11) or segments (11a, 11b) of the first grid row; independently establishing the second grid row (12) or segments of the second grid row; and after the respective production, connecting the first grid row (11) to the second grid row (12) or segments (11a, 11b) of the first grid row (11) and / or the second grid row to one another or to one of the grid rows (12). In this case, producing the first grid row (11) comprises producing an annular carrier (31, 32) on which a plurality of the first blades (21) is arranged, and producing the second grid row (12) comprises producing a second annular carrier (33, 34) on which a plurality of the second blades (22) is arranged. The first annular support (11) and / or the second annular support are not formed as a solid ring, but from a plurality of circular segments (11 a, 11 b). The invention further relates to a double-row paddle wheel.