General Electric Company

Raymond Joseph Lecuyer

John Herbert Dimmick

Norman K Austin

Gang Liu

Nathan Stafford Race

Kevin Lee Worley

David Arthur Butz

Ashok Kumar Haveri Murigeppa

John Herbert Iii Dimmick

Butz David Arthur Arthur

A system includes a cover segment configured to mount in first and second grooves circumferentially along a blade mounting region of a turbine rotor. The cover segment includes a cover body and at least one fastener. The cover body includes first and second lips extending along first and second circumferential portions of the cover body at an offset from one another. The first lip is configured to mount circumferentially along the first groove and the second lip is configured to mount circumferentially along the second groove. The at least one fastener is configured to retain the cover body to the turbine rotor or at least one blade mounted in the blade mounting region.

System and method for covering a blade mounting region of turbine blades

A bolted flange assembly for securing rotating components in a gas turbine. The bolted flange assembly includes two rotating wheels, each wheel having at least one arm extending towards a spacer positioned partially between the two rotating wheels, wherein each arm has a flange surface facing the spacer. Either each flange surface or a surface of the spacer is conical, i.e., non-perpendicular to a centerline of the gas turbine, such that in an unconstrained state, a heel end of each flange surface is closer to the spacer than a toe end of each flange surface; and a bolt extending through the arm of each rotating wheel and the spacer.

Gas turbine conical flange bolted joint

A system includes a cover segment set configured to mount in first and second grooves circumferentially along a blade mounting region of a turbine rotor. The cover segment set includes a seal segment and a cover segment. The seal segment has a seal body with a lock feature, wherein the seal segment is configured to mount circumferentially along the second groove. The cover segment includes first and second lips extending along first and second circumferential portions of a cover body. The first and second lips are at an offset from one another. The first lip is configured to mount circumferentially along the first groove, the second lip is configured to mount circumferentially along the second groove adjacent the seal segment, and the second lip includes a mating lock feature configured to couple with the lock feature of the seal body.

The dovetails of turbine buckets are received in dovetail grooves between circumferentially adjacent wheelposts on a turbine wheel of a gas turbine rotor. The wheel and a spacer are rabbeted one to the other and an axially forwardly extending projection on each bucket dovetail is undercut to space the bucket projection from the outer rim of the spacer eliminating stress on the bucket from the spacer. A cavity is formed between radially outwardly converging wall portions of the spacer and end faces of the wheelposts and bucket dovetails. An annular seal wire conforms and seals between the spacer wall portions and end faces of the wheelposts and bucket dovetails in response to centrifugal forces during turbine operation.

Growing community of inventors

Taylors, SC, United States of America

Raymond Joseph Lecuyer