Method for mounting an integral inner ring of a turbocompressor stator
AssigneeMTU Aero Engines AG
InventorFrank Stiehler
Life of this patent
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Abstract
A method for mounting an integral inner ring (10) of a turbocompressor stator to a guide vane ring (12) comprises the following steps: -Providing the guide vane ring (12) with an inner radius S; -Providing inner ring (10) with an outer radius R, which corresponds to the inner radius S; -Pre-tensioning inner ring (10) to an outer radius r that is smaller than the outer radius R of the untensioned inner ring (10); and -Relaxing inner ring (10) to the outer radius R.
Claims21
A method for mounting an integral inner ring of a turbocompressor stator to a guide vane ring having the following steps:
- providing the guide vane ring with an inner radius S;
- providing the inner ring with an outer radius R, which corresponds to the inner radius S;
- pre-tensioning the inner ring to an outer radius r, which is constant over the periphery of the inner ring and which is smaller than the outer radius R of the untensioned inner ring;
- and
- unwinding the inner ring in the guide vane ring by relaxing the inner ring to the outer radius R;
- wherein for pre-tensioning the inner ring, a die plate having a radius whose outer radius is smaller than the outer radius R of the untensioned inner ring minus its radial thickness is used.
A method for mounting an integral inner ring of a turbocompressor stator to a guide vane ring having the following steps:
- providing the guide vane ring with an inner radius S;
- providing the inner ring with an outer radius R, which corresponds to the inner radius S;
- pre-tensioning the inner ring to an outer radius r, which is constant over the periphery of the inner ring and which is smaller than the outer radius R of the untensioned inner ring;
- and
- unwinding the inner ring in the guide vane ring by relaxing the inner ring to the outer radius R;
- wherein the guide vane ring is a partial ring, which comprises a portion of guide vanes with inner pins pre-mounted in a housing or part of a housing;
- and
- wherein when it is relaxed, the inner ring is placed at one end of guide vane ring and is unwound in guide vane ring so that the movement path of one fixed point of inner ring corresponds to a cycloid.
Dependencies are inferred from the claim text.