BLADE ADVANCES = BETTER EFFICIENCY/LIFE

摘要

The most critical aspect of steam tur-bine efficiency and reliability is the steam path design. Stationary nozzles, diaphragms and rotating blades (or buckets) comprise the steam path. The blades are subjected to various loads during transient and steady state operation. High reliability of turbine blades requires that they be designed for non-resonant operation where the resonant frequency of the blade or blade grouping does not coincide with the frequency of the unsteady steam forces from the control nozzles and diaphragms.