Leitvorrichtung für eine Turbine mit einem Leitschaufelträger und Verfahren zur Herstellung dieser Leitvorrichtung

摘要

The invention relates to a guide device for a turbine with a vane support (1a, 1b) which is fitted in a turbine housing, preferably a steam turbine housing, and provided with vanes (2). Positioning elements (5a, 5b) are provided for positioning and securing the vanes on the vane support (1a, 1b) and keep the vanes (2) in a specified fitted position. To simplify the manufacture of guide devices of this type, it is proposed that the two halves of a vane ring (5) which divides in the region of the turbine housing join should serve as positioning elements (5a, 5b). The vane ring (5) is provided with radially extending profiled perforations (10) into which the vane foot (6) of each vane (2) is inserted. At least one first securing element (7) is provided; this is preferably detachable and secures each vane foot (6) on the appropriate vane ring (5). Also provided is at least one second securing element (8) which secures each of the two halves of the vane ring (5) on the vane support (1).