Process for securing a turbine blade
AssigneeWestinghouse Electric Corp.
InventorsIan L. W. Wilson, William G. Clark, Jr., Kenneth C. Radford
Life of this patent
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Abstract
A process provides a method for attaching a turbine blade to a blade support such as a rotor or rotor disc of a turbine. The root portion of the blade is formed to a shape approximately that of a groove in the surface of the rotor or rotor disc and the root portion of the blade is inserted within the groove. A composition comprising a particulate compound selected from the group consisting of a ceramic, graphite metal, metal alloy and mixtures thereof is positioned between the root portion of the blade and steeples, located one on either side of the groove.
Claims20
A process for attaching a blade to a blade support of a turbine wherein said blade has a root portion adapted for insertion within a groove in a surface of said blade support, said groove being disposed between two steeples, located one on either side of said groove, said process comprising the steps of:
- forming said root portion of said blade to a shape approximately that of said groove;
- inserting said root portion of said blade within said groove;
- positioning a composition comprising a hydrolyzable compound having the formula:
- M[R.sub.v-n (OR')n],
- wherein
- M is a metal,
- each R is independently selected form the group consisting of alkyl groups having from 1 to 10 carbon atoms,
- each R' is independently selected from the group consisting of alkyl groups having from 1 to 10 carbon atoms,
- v is an integer equal to the valence of M, and
- n is an integer of from 2 to v, between said root portion of said blade and said steeples;
- and
- hydrolyzing said compound to attach said blade to said blade support.
A turbine comprising:
- a blade support having a surface with at least one groove therein, said groove bgeing disposed between two steeples, located one on either side of said groove,
- a blade having a root portion formed to a shape approximately that of said groove, said root portion of said blade being disposed within said groove;
- and
- a composition comprising a hydrolyzed compound formed by hydrolyzing a hydrolyzable compound having the formula:
- M[R.sub.v-n (OR')n],
- wherein
- M is a metal,
- each R is independently selected from the group consisting of alkyl groups having from 1 to 10 carbon atoms,
- each R' is independently selected from the group consisting of alkyl groups having from 1 to 10 carbon atoms,
- v is an integer equal to the valence of M, ns
- n is an integer of from 2 to v, disposed between said root portion of said blade and said steeples such that said blade is attached to said blade support.
A process for attaching a blade to a blade support of a turbine wherein said blade has a root portion adapted for insertion within a groove in a surface of said blade support, said root portion of said blade having a generally triangular cross-section, said groove being disposed between two steeples, locates one on either side of said groove and having a generally triangular cross-section, said process comprising the steps of:
- forming said root portion of said blade to a shape approximately that of said groove;
- inserting said root portion of said blade within said groove;
- positioning a composition comprising an alcohol and a hydrolyzable compound having the formula:
- M[R.sub.v-n (OR')n],
- wherein
- M is a metal
- each R is independently selected form the group consisting of alkyl groups having from 1 to 10 carbon atoms,
- between said root portion of said blade and said steeples;
- and
- polymerizing said hydrolyzable compound within said groove.
Dependencies are inferred from the claim text.