| 摘要 |
The invention relates to a multi-stage low-pressure steam turbine (10) and a method for operating thereof. The steam turbine (10) comprises a last stage (18) in which the leading edge (20) of each vane (14) of the last stage (18) is skewed so as to form a W shaped K-distribution across the span (36) of the vanes (14). This shape enables efficient last stage (18) operation at low last stage exit velocities. The invention further includes a method for operating such a steam turbine (10) at a last stage exit velocity between 125 m/s and 150 m/s.
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