| 主权项 |
1. A blade row group arrangeable in a main flow path of a fluid-flow machine and including N adjacent member blade rows firmly arranged relative to one another in both the axial direction (x) and the circumferential direction, with the number N of the member blade rows being greater than/equal to 2 and (i) designating the running index with values between 1 and N, where a front member blade row with front blades (i) as well as a rear member blade row with rear blades (i+1) are provided in the meridional plane established by the axial direction (x) and the radial direction (r), where the blade row group has two main flow path boundaries (HB), wherein
the profile of the blades (i, i+1) of the member blade rows is firmly connected at at least one of the two main flow path boundaries (HB) to a blade root structure (F(i), F(i+1)), where the blade root structure (F(i)) of the blades (i) of the front member blade row has at least one holding structure (VF(i), HF(i)), and/or the blade root structure (F(i+1)) of the blades (i+1) of the rear member blade row has at least one holding structure (VF(i+1), HF(i+1)), and at least one of the holding structures (VF(i), HF(i), VF(i+1), HF(i+1)) is designed and suitable, due to its shape, for fixing the respective blade root structure (F(i), F(i+1)) of the member blade row in at least one direction inside the surrounding structure of the respective main flow path boundary. |
