Method of clamping blades

Details Method of clamping blades Method of clamping blades

1988-12-12

1989-12-05

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

291568R, 29445, 416196R, 416500, F01D 522

Patent

active

048849510

ABSTRACT:
In order to clamp blades (1, 2, n) of turbomachines to influence the blade vibration occuring in such machines, the shroud plates (1a, 2a, na) are dimensioned in such a way that they are in contact with one another in the installed condition without clearance and without contact force or else they are dimensioned so that they exhibit a gap (3) relative to each other. A prestressed or pretorsioned, clearance-free connection occures between the shroud plates (1a, 2a, na) due to plastic deformation of the shroud plates (1a, 2a, na) in the region of their boundries or of the gap (3).

REFERENCES:
patent: 1073623 (1913-09-01), Owen et al.
patent: 1304793 (1919-05-01), Moore
patent: 2237121 (1941-04-01), Stine et al.
patent: 2510734 (1950-06-01), Bodger
patent: 2681500 (1954-06-01), Whitehead
patent: 4155152 (1979-05-01), Cretella et al.

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