Patent ID: 9011084
Filing Date: 2015-04-21
Classification: F01D,F05D

Abstract:
1. A steam turbine stator vane, comprising: a trailing edge having a curved line on which an inflection point is provided when the stator vane is viewed from a downstream side in a flow direction of a working fluid in an axial direction of a steam turbine; an outer circumferential stator vane end portion that is inclined at a flare angle toward an outer circumferential tip side of a moving blade of the steam turbine with respect to the flow direction of the working fluid from an upstream side to the downstream side; and an inner circumferential stator vane end portion that is inclined toward an inner circumferential root side of the moving blade of the steam turbine from a position at which a width of an inter-vane flow path formed between the stator vane and another stator vane is minimal to the downstream side of the flow direction of the working fluid, with the stator vane and the other stator vane being arranged adjacent to each other in a circumferential direction of the steam turbine, wherein a projecting amount of the trailing edge forms a curved line and, in a rotational direction of the moving blade of the steam turbine, monotonously increases from the inner circumferential end portion of the stator vane to the outer circumferential portion of the stator vane.