Shaft balancing
Abstract
A gas turbine engine has an internal drive shaft including one end connected to a driven load and an opposite end connected to a turbine wheel and wherein the shaft has an in situ adjustable balance system near the critical center of a bearing span for the shaft including two 360.degree. rings piloted on the outer diameter of the shaft at a point accessible through an internal engine panel; each of the rings has a small amount of material removed from its periphery whereby both of the rings are precisely unbalanced an equivalent amount; the rings are locked circumferentially together by radial serrations thereon; numbered tangs on the outside diameter of each ring identify the circumferential location of unbalance once the rings are locked together; an aft ring of the pair of rings has a spline on its inside diameter that mates with a like spline on the shaft to lock the entire assembly together.
- Inventors:
-
- Greenwood, IN
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 863464
- Patent Number(s):
- 4177692
- Assignee:
- General Motors Corporation (Detroit, MI)
- 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 F16 - ENGINEERING ELEMENTS AND UNITS F16F - SPRINGS
- DOE Contract Number:
- AC04-76
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- shaft; balancing; gas; turbine; engine; internal; drive; including; connected; driven; load; opposite; wheel; situ; adjustable; balance; near; critical; center; bearing; span; 360; degree; rings; piloted; outer; diameter; accessible; panel; amount; material; removed; periphery; whereby; precisely; unbalanced; equivalent; locked; circumferentially; radial; serrations; thereon; tangs; outside; identify; circumferential; location; unbalance; pair; spline; inside; mates; lock; entire; assembly; outside diameter; turbine wheel; drive shaft; turbine engine; gas turbine; entire assembly; inside diameter; outer diameter; shaft including; material removed; circumferential location; /74/
Citation Formats
Irwin, John A. Shaft balancing. United States: N. p., 1979.
Web.
Irwin, John A. Shaft balancing. United States.
Irwin, John A. Mon .
"Shaft balancing". United States. https://www.osti.gov/servlets/purl/863464.
@article{osti_863464,
title = {Shaft balancing},
author = {Irwin, John A},
abstractNote = {A gas turbine engine has an internal drive shaft including one end connected to a driven load and an opposite end connected to a turbine wheel and wherein the shaft has an in situ adjustable balance system near the critical center of a bearing span for the shaft including two 360.degree. rings piloted on the outer diameter of the shaft at a point accessible through an internal engine panel; each of the rings has a small amount of material removed from its periphery whereby both of the rings are precisely unbalanced an equivalent amount; the rings are locked circumferentially together by radial serrations thereon; numbered tangs on the outside diameter of each ring identify the circumferential location of unbalance once the rings are locked together; an aft ring of the pair of rings has a spline on its inside diameter that mates with a like spline on the shaft to lock the entire assembly together.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1979},
month = {Mon Jan 01 00:00:00 EST 1979}
}