Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Welded – cemented or fused
Reexamination Certificate
2006-10-03
2006-10-03
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Welded, cemented or fused
C416S215000, C416S20400A, C029S889210, C029S889220
Reexamination Certificate
active
07114927
ABSTRACT:
A fixing method for blading of a fluid-flow machine, in which first of all the turbine blades (31, 32) are inserted into the fastening slot (1) of a rotor (2) or stator until only the intermediate fitting gap is left, into which two insert elements designed as end piece halves (41, 42) are then inserted. After that, a wedge (6) is inserted into the gap between the end piece halves (41, 42), and the end piece halves (41, 42) together with the wedge (6) are welded by a joining weld (10). With the method according to the invention and the arrangement according to the invention, axial forces which can warp the rotor (2) and thus cause increased rotor vibrations are advantageously avoided. The invention also relates to a fixing arrangement according to the invention.
REFERENCES:
patent: 2281318 (1942-04-01), Neufeld
patent: 820 598 (1949-07-01), None
patent: 101 34 611 (2002-06-01), None
Search Report from DE 103 46 239.2 (Jan. 21, 2004).
Bachofner René
Kappis Wolfgang
ALSTOM Technology Ltd.
Cermak Adam J.
Cermak & Kenealy LLP
Edgar Richard A.
Look Edward K.
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