General Electric Company

Mario A Mazzola

Thomas Joseph Farineau

Michael Thomas Hamlin

Earl H Brinkman

George Schlottner

John Costantini

Richard I Cromer

In an opposed flow high pressure section, intermediate pressure section steam turbine (10), an annular section divider (142) is located axially between the high pressure section (HP) and the intermediate pressure section (IP), and substantially eliminates conventional inner shell sections. Thus, the turbine has only a single outer shell to which the blades of the turbine stages outside the divider 142 are operatively sealed. The section divider (142) incorporates partial arc steam admission chambers (150); supports a nozzle plate assembly (146); and includes integral steam packing (156) to seal the rotor interface.

High pressure/intermediate pressure section divider for an opposed flow

A process for replacing a multi-piece steampath in a nozzle box (12) where, initially, the steampath (22) is secured between upper (24) and lower (26) ring components by means of axially accessible, arcuate welds (36, 38) includes the steps of:

Steampath and process of retrofitting a nozzle thereof

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Ballston Lake, NY, United States of America

Mario A Mazzola