IMPELLER OF AXIAL-FLOW COMPRESSOR (VERSIONS) Russian patent published in 2005 - IPC

FIELD: power machine construction.

SUBSTANCE: invention can be used in impellers of axial-flow compressors of gas-turbine plants. According to one design version, longitudinal slot is made in root base on part of root length from its end face and cross slot which relatively intersect and into which T-shaped insert is fitted. End face of insert is arranged in plane of end face of root. Blade is fixed from displacement along slot in disk by caulking t-shaped insert and root of blade in recesses from opposite end faces of disk. According to other design version, longitudinal slot is made in base of root from each end face on part of length of root and cross slot intersecting the longitudinal slot, and T-shaped insets are fitted in intersecting slots. End face of each insert is arranged in plane of corresponding end face of root, and blade is fixed from displacement along slot in disk by caulking of T-shaped insert in recess on corresponding end face of disk.

EFFECT: improved repairability of blades and increased service life of impeller disk of axial-flow compressor.

3 cl, 8 dwg