Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Patent
1978-05-18
1980-06-17
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
F01D 532
Patent
active
042081700
ABSTRACT:
An improved blade retainer for locking radially projecting blades on a rotor includes an elastic spacer sized to be inserted into a radial space between the blade tang and the bottom of the rotor slot in a generally undeformed state without deformation of the tang or slot. The spacer is provided with a first arcuate surface which abuts the tang and a second arcuate surface which, in one embodiment, abuts the bottom of the rotor slot when the spacer is deformed, thereby exerting an outwardly directed load on the tang. The spacer is fixed against axial movement relative to the blades by means of a forward end lug which is in confronting and overlapping relationship with an end face on the blade tang when the spacer is deformed. Blocker means are insertable between the spacer and the bottom of the slot to retain the spacer in a deformed state and thereby bias the blade radially outwardly. A channelled sleeve can be provided under the spacer and blocker means to distribute the load over a greater area of the rotor slot to reduce wear thereof.
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Peck Robert A.
Tucker James W.
General Electric Company
Lampe, Jr. Robert C.
Lawrence Derek P.
Powell Jr. Everette A.
Trausch, III A. N.
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