Title:
歯頂部の応力を減少させるリングキーを備えた発電機ロータ
Document Type and Number:
Japanese Patent JP3830979
Kind Code:
B2
Abstract:
A generator rotor that reduces friction force transmitted to rotor teeth by a retaining ring is disclosed. The friction force is caused by end windings pushing longitudinally outward against the retaining ring when the windings heat up during operation of the rotor. A ring key diminishes the friction force transmitted to a rotor teeth region by transmitting more of the friction force to a rotor pole region. The present invention accomplishes this reduction in transmission by either forming a gap between the ring key and the teeth regions, by producing only light contact between the ring key and the teeth regions, by the ring key being formed of a lower stiffness material in the areas in which it contacts the teeth regions, or by a combination of the above.
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Inventors:
Murphy, Robert, Elle
Application Number:
JP54054898A
Publication Date:
October 11, 2006
Filing Date:
March 03, 1998
Export Citation:
Assignee:
Siemens Westinghouse Power Corporation
International Classes:
F16B21/18; H02K3/51
Foreign References:
| DE2333622A1 | ||||
| DE1538750A1 | ||||
| US4197476 |
Attorney, Agent or Firm:
Koichiro Kato