Mechanical coupling for a rotor shaft assembly of dissimilar materials

Patent · Tue May 05 00:00:00 EDT 2009

OSTI ID:988163

Shi, Jun ^[1]; Bombara, David ^[2]; Green, Kevin E ^[3]; Bird, Connic ^[4]; Holowczak, John ^[5]

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1. Glastonbury, CT
2. New Hartford, CT
3. Broad Brook, CT
4. Rocky Hill, CT
5. South Windsor, CT

A mechanical coupling for coupling a ceramic disc member to a metallic shaft includes a first wedge clamp and a second wedge clamp. A fastener engages a threaded end of a tie-bolt to sandwich the ceramic disc between the wedge clamps. An axial spring is positioned between the fastener and the second wedge clamp to apply an axial preload along the longitudinal axis. Another coupling utilizes a rotor shaft end of a metallic rotor shaft as one wedge clamp. Still another coupling includes a solid ceramic rotor disc with a multiple of tie-bolts radially displaced from the longitudinal axis to exert the preload on the solid ceramic rotor disc.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-00CH11060
• Assignee: Hamilton Sundstrand Corporation (Rockford, IL)
• Patent Number(s): 7,527,479
• Application Number: 11/221,440
• OSTI ID: 988163
• Country of Publication: United States
• Language: English

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