Blade arrangement, especially stator blade arrangement
View Patent ↗A blade arrangement on a wall of a fluid flow path of a turbomachine includes a locating channel disposed in the wall and having undercut flanks. A plurality of blades each having a blade-side root section corresponding to the undercut flanks. A plurality of intermediate filling pieces correspond to the undercut flanks and separate each of the blade-side root sections. The plurality of blade-side root sections and intermediate filling pieces are seated in a form-fitting manner and fixed in a force-locking manner in the locating channel. The plurality of intermediate filling pieces fill out the locating channel so as to form a gas flow-side surface essentially free of a disturbing contour between the blade-side root sections. Each of the plurality of intermediate filling pieces includes a threaded hole disposed essentially perpendicular to a base of the channel. A screw is disposed in the threaded hole.
1. A stator blade arrangement on a wall of a fluid flow path of a turbomachine, the stator blade arrangement comprising:
a locating channel disposed in the wall and having undercut flanks;
a plurality of stator blades each having a blade-side root section corresponding to the undercut flanks; and
a plurality of intermediate filling pieces corresponding to the undercut flanks and separating each of the blade-side root sections, the plurality of intermediate filling pieces and blade-side root sections being seated in a form-fitting manner and fixed in a force-locking manner in the locating channel, wherein the plurality of intermediate filling pieces fill out the locating channel so as to form a gas flow-side surface essentially free of a disturbing contour between the blade-side root sections, and wherein each of the plurality of intermediate filling pieces includes a threaded hole disposed essentially perpendicular to a base of the locating channel, wherein a screw is disposed in the threaded hole, the screw being adjustable so as to be clampable against the base of the locating channel, and wherein each of the plurality of intermediate filling pieces is adjusted and fixed independently of other intermediate filling pieces.
2. The stator blade arrangement as recited in claim 1 , wherein the turbomachine is a gas turbine.
3. The stator blade arrangement as recited in claim 1 , wherein each of the plurality of screws includes a stamp-like end piece having a cross section larger than a cross section of a threaded portion of the screw, wherein the stamp-like end piece is configured to clamp the screw against the base of the locating channel.
4. The stator blade arrangement as recited in claim 1 , wherein each of the plurality of screws include a worm screw-like threaded portion having an end face facing away from the base of the locating channel and having an opening configured to accommodate a screw-turning tool, wherein the opening has a cross section that is not round.
5. The stator blade arrangement as recited in claim 3 , wherein each of the plurality of intermediate filling pieces includes a recess facing the base of the locating channel configured to accommodate the stamp-like end piece during an installation of the intermediate filling piece.
6. The stator blade arrangement as recited in claim 1 , further comprising rib-like projections extending in a longitudinal direction of the locating channel, and wherein each of the plurality of intermediate filling pieces includes a groove disposed on a side of the filling piece facing a side of the locating channel corresponding to each of the rib-like projections so as to accommodate the rib-like projections.