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US 8,784,056 B2Granted
System and turbine including creep indicating member
AssigneeGeneral Electric Company
InventorFred Thomas Willett, Jr.
Life of this patent
Estimating the term…
Abstract
A system includes a creep indicating member on a rotating component, and a measurement device configured to measure a change in radial position of the creep indicating member. The system allows determination of, for example, rotating component life expectancy in a turbine, without exposing the rotating component.
Claims17
A system comprising:
- a creep indicating member disposed on a rotating component;
- wherein the creep indicating member has a first end and a second end;
- wherein the first end of the creep indicating member is directly affixed to a surface of the rotating component such that the creep indicating member extends radially outward from the rotating component;
- wherein the second end of the creep indicating member includes a cantilevered element extending substantially parallel to a longitudinal axis of the rotating component prior to undergoing creepage;
- wherein the creep indicating member including the cantilevered element extends about an entire circumference of the rotating component;
- and
- a measurement device configured to measure a change in radial position of the cantilevered element.
4 more elements
A turbine comprising:
- a rotating component;
- a creep indicating member disposed on the rotating component;
- wherein the creep indicating member has a first end and a second end;
- the first end being directly affixed to a surface of the rotating component such that the creep indicating member extends radially outward from the rotating component;
- and wherein the second end of the creep indicating member includes a cantilevered element;
- wherein, prior to undergoing creepage, the cantilevered element is in a first position, in which the cantilevered element extends in a direction substantially parallel to a longitudinal axis of the rotating component, and
- wherein, after undergoing creepage the cantilevered element is in a second position, in which the cantilevered element extends both axially and radially outwardly from the rotating component, the second position being disposed radially outwardly of the first position;
- and
- wherein the creep indicating member including the cantilevered element extends about an entire circumference of the rotating component;
- a measurement device configured to measure a change in radial position of the cantilevered element during operation of the rotating component;
- and
- a creep correlation system comprising a computer configured to correlate a creep amount of the creep indicating member with a creep amount of the rotating component.
9 more elements
A system comprising:
- a creep indicating member disposed on a rotating component, the creep indicating member having a first end and a second end,
- wherein the first end of the creep indicating member is directly affixed to a surface of the rotating component such that the creep indicating member extends radially outwardly from the rotating component;
- and the second end of the creep indicating member includes a cantilevered element;
- a measurement device configured to measure a change in radial position of the cantilevered element;
- wherein the cantilevered element extends substantially parallel to a longitudinal axis of the rotating component before undergoing creepage and the cantilevered element deforms radially outwardly after undergoing creepage;
- and
- wherein the creep indicating member including the cantilevered element extends about an entire circumference of the rotating component.
4 more elements
Dependencies are inferred from the claim text.