Application of a connection joint to a stator stage by means of inflatable bladders
AssigneeSafran Aero Boosters SA
InventorGeorges Duchaine
Life of this patent
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Abstract
The present application relates to a method for assembling a stator stage of a turbomachine, the stage having an inner ring, an outer ring, and vanes extending radially between the inner ring and the outer ring. The method includes at least the following essential step: applying at least one inflatable bladder against at least one opening between a vane and one of the inner ring and the outer ring on that face of the ring which is opposite the face for application of a sealing material, so as to form one or more retention surfaces for the sealing material. The present application also relates to an assembly device designed for implementing the method.
Claims20
A method for assembling a stator stage of a turbomachine, the stage having an inner ring, an outer ring, and vanes extending radially between the inner ring and outer ring, at least one of the rings exhibiting an opening, the method comprising:
- (a) positioning at least one of the vanes and the ring exhibiting the opening, such that said vane passes through the opening and raises radially from the opening;
- and
- (c) applying a sealing material between the vane and the corresponding opening, on a face of said ring exhibiting the opening, so as to form a connection joint between the vane and the ring opening;
- and
- an intermediate step (b) of applying at least one inflatable bladder against the opening on a face of the ring, the face being radially opposite to the face for application of the sealing material, so as to form one or more retention surfaces of said sealing material.
A device for assembling a stator stage of a turbomachine, the stator having an inner ring, an outer ring, and vanes which extend radially between the rings, at least one of the rings comprising an opening row, the vanes being mounted through openings of the opening row, the device comprising:
- multiple inflatable bladders configured to be applied between adjacent vanes and against openings, where the bladders are inflated to form one or more retention surfaces of a sealing material when it is applied between the vanes and against the openings.
A table for assembling a stator stage of a turbomachine, the stator having an inner ring, an outer ring, and vanes which extend radially between the rings, at least one of the rings having an opening row, the vanes being mounted through openings of the opening row, the table comprising:
- a generally horizontal assembly surface on which the stator is mounted;
- and
- an assembly device comprising:
- multiple inflatable bladders configured to be applied between adjacent vanes and against openings, the bladders being inflated to form one or more retention surfaces of a sealing material when the bladders are applied between the vanes and against the openings.
Dependencies are inferred from the claim text.