End retainer ring assembly for rotary electrical devices

Details End retainer ring assembly for rotary electrical devices End retainer ring assembly for rotary electrical devices

1990-10-29

1991-11-26

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 277 9, 277 75, H02K 346

Patent

active

050685643

ABSTRACT:
A rotary electrical device has a rotor body for receiving an inner retaining ring. A primary retaining ring is formed of a composite of epoxy and graphite fibers and has an integrally embedded auxiliary ring at one end thereof adjacent its open end. The auxiliary ring and inner retaining ring have complementary tapered surfaces with axially spaced, circumferentially extending seals therebetween. The inner retaining ring has fluid lines for receiving fluid under high pressure to facilitate axial assembly and a disassembly of the retaining ring relative to the rotor body. The retaining ring has a corrugated spring to accommodate differential expansion of the end windings of the electrical device and the composite retaining ring. A short-circuiting ring is at the inside diameter of the primary retaining ring. A corrugated spring is interposed between the primary retaining ring and the short-circuiting ring.

REFERENCES:
patent: 2306160 (1942-12-01), Freyssinet
patent: 2621223 (1952-12-01), Vickers
patent: 2773210 (1956-12-01), Vogt
patent: 2960360 (1960-11-01), Taylor
patent: 3476966 (1969-11-01), Willyoung
patent: 4413649 (1983-11-01), Rodd et al.
patent: 4486676 (1984-12-01), Moore et al.
patent: 4654550 (1987-03-01), Lowther et al.
patent: 4912354 (1990-03-01), Frank
Fabrication & Evaluation of Scale Model Graphite/Epoxy Retaining Rings for Generator Applications; J. F. Meier; 07/27/88; Westinghouse Research & Dev. Center.

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