General Electric Company

Jeyaruban Selliah Amirtharajah

Michael Earl Montgomery

Michael Thomas Hamlin

Thomas William Swart

Charles Thomas O'Clair

Richard Jon Chevrette

Bruce William Brisson

Dennis Roger Ahl

Mark Arne Florin

Richard Mattice

Jeffrey Louis Palmer

Carl A Greco

A joint assembly for a steam turbine includes a threaded stud extending through mating openings in a first flange of the first half shell and in a second flange of the second half shell; a first nut threaded onto a first end of the threaded stud adjacent the first flange; a screw coupling the first nut to the first flange; and a dowel extending between and into the first flange and the first nut so as to bear a substantial portion of a torque load applied to the first nut compared to the screw.

Steam turbine half shell joint assembly

A loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of the pipe relative to the flange. The lock sleeve includes at least two openings in a first end of the lock sleeve configured to receive at least two pipe pins extending radially outward from the pipe. The lock sleeve further includes at least four openings in a second end of the lock sleeve configured to receive at least four flange pins extending radially inward from the flange.

Loose anti-rotation lock sleeve for pipe/flange assembly

Disclosed herein is a nozzle box assembly including a torus, a steam path ring, and a bridge ring. The torus has a plurality of steam inlets and an annular steam outlet. The steam path ring has an annular steam inlet, the annular steam inlet has an inner diameter (ID) and an outer diameter (OD), the steam path ring is disposed downstream of the torus. The bridge ring has an annular steam inlet and an annular steam outlet, the annular steam outlet has an ID and an OD, the bridge ring is disposed between the torus and the steam path ring, the bridge ring annular steam outlet is adjacent to the steam path ring annular steam inlet, and the steam path ring annular steam inlet OD is greater than the bridge ring annular steam outlet OD and the steam path ring annular steam inlet ID is smaller than the bridge ring annular steam outlet ID.

Optimized nozzle box steam path

A method for aligning an inner shell of a turbine assembly with an outer shell of the turbine assembly along a transverse centerline of the turbine assembly perpendicular to an axial centerline of the turbine assembly includes positioning a first gib key assembly with respect to the transverse centerline. The first gib key assembly is connected to a first end surface of the inner shell to form a first groove within the first gib key assembly. A projection formed on a first end of the outer shell mateably engages the first groove formed within the first gib key assembly to align the inner shell with the outer shell along the transverse centerline.

Method and assembly for aligning a turbine

A packing ring holder assembly for packing seal segments about a steam turbine rotor includes a nozzle box and a holder cooperable to form a dovetail for securing packing ring segments to the nozzle box. A spring is interposed between the nozzle box and packing ring segment to bias the latter radially inwardly for sealing with the rotor. The holder includes a shoulder for preventing axial movement of the spring in one direction.

Mounting structure for a packing ring seal segment in a turbine

A turbine shell assembly includes radially inner and outer shell components; axial alignment fits on the inner and outer shell components, each alignment fit comprising a male fit component on one of the inner and outer shell components and a female fit component on the other of the inner and outer shell components, the female fit component comprising a pair of flanges forming a U-shaped channel with opposed faces, and the male fit component comprising a projection received within the U-shaped channel; and a pair of axial alignment keys, each key having a mounting flange for securement along an outer edge of a respective one of the pair of flanges and an alignment flange engaged along a respective one of the opposed faces.

Growing community of inventors

Niskayuna, NY, United States of America

Jeyaruban Selliah Amirtharajah