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Title: Mechanical coupling for a rotor shaft assembly of dissimilar materials

Abstract

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.

Inventors:
 [1];  [2];  [3];  [4];  [5]
+ Show Inventor Affiliations
  1. Glastonbury, CT
  2. New Hartford, CT
  3. Broad Brook, CT
  4. Rocky Hill, CT
  5. South Windsor, CT
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
988163
Patent Number(s):
7527479
Application Number:
11/221,440
Assignee:
Hamilton Sundstrand Corporation (Rockford, IL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
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DOE Contract Number:  
FC26-00CH11060
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Shi, Jun, Bombara, David, Green, Kevin E, Bird, Connic, and Holowczak, John. Mechanical coupling for a rotor shaft assembly of dissimilar materials. United States: N. p., 2009. Web.
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Shi, Jun, Bombara, David, Green, Kevin E, Bird, Connic, & Holowczak, John. Mechanical coupling for a rotor shaft assembly of dissimilar materials. United States.
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Shi, Jun, Bombara, David, Green, Kevin E, Bird, Connic, and Holowczak, John. Tue . "Mechanical coupling for a rotor shaft assembly of dissimilar materials". United States. https://www.osti.gov/servlets/purl/988163.
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@article{osti_988163,
title = {Mechanical coupling for a rotor shaft assembly of dissimilar materials},
author = {Shi, Jun and Bombara, David and Green, Kevin E and Bird, Connic and Holowczak, John},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {5}
}
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