Process for cleaning passages in workpieces, and associated apparatus
OwnerRene Jabado, Jens Jensen +6inventors
InventorsRene Jabado, Jens Jensen, Ursus Kruger, Daniel Kortvelyessy, Volkmar Luthen, Ralph Reiche, Michael Rindler, Raymond Ullrich
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Abstract
The invention relates to a process for cleaning passages in workpieces, in particular cooling-air passages in turbine components, such as transition pieces or turbine blades or vanes, wherein the workpiece having the passages is immersed in a liquid bath and a liquid is suddenly forced under pressure through the passages.
Claims21
-21. (canceled)
A process for cleaning cooling-air passages in turbine components, comprising:
- immersing a workpiece containing a plurality of cooling air passages in a liquid bath;
- inserting a hollow apparatus into the liquid bath, wherein the apparatus has:
- a housing that defines a cavity, and
- an outlet opening arranged on a side of the housing,
- filling the apparatus cavity with the liquid;
- arranging the outlet opening of the apparatus onto the workpiece such that the opening is aligned with a cooling air passage;
- and
- forcing the liquid under pressure through the cooling air passages to effectuate cleaning of the passages.
An apparatus for cleaning passages in a workpiece, comprising:
- a housing having a cavity;
- an outlet arranged on a side of the housing;
- and
- a displacement body movably arranged in the cavity, the displacement body having an actuating element projecting out of the housing, wherein the housing has a passage opening on a side of the displacement body remote from the outlet opening.
A device for cleaning cooling air passages in a turbine components, comprising:
- a hollow cylindrical housing configured to contain a liquid;
- an outlet opening arranged at an end of the cylindrical housing;
- and
- a piston arranged in the cavity having an actuating element extending out of the housing in a direction opposite the outlet opening, wherein the housing has a passage opening opposite the outlet opening.
Dependencies are inferred from the claim text.