WILLIAM A SCHOFIELD
Engineering in Sterling Junction, MA
License number
Massachusetts 29015
Expiration Date
Jun 30, 1994
Type
Mechanical Engineer
Address
Address
Sterling Junction, MA 01564
Professional information
High Pressure Industrial Turbine Casing
US Patent:
4948331, Aug 14, 1990
Filed:
Jul 31, 1989
Appl. No.:
7/387204
Inventors:
Daniel R. Roy - Carlisle MA
Wingming O. Chow - Fitchburg MA
William A. Schofield - Sterling MA
Wingming O. Chow - Fitchburg MA
William A. Schofield - Sterling MA
Assignee:
General Electric Company - Schenectady NY
International Classification:
F01D 1700, F01D 2524
US Classification:
415 20
Abstract:
A casing for a high pressure steam turbine is provided which is adapted to be stocked for subsequent customization. The casing is made as an incomplete casing with a closed chamber between an inner and outer wall and extending axially along a significant length of the casing. Taps for extraction or admission are subsequently provided by locating the axial locations which provide the desired pressures, machining a slot through the inner wall and an opening through the outer wall, and securing a fluid tight barrier between the walls adjacent the slot to separate the chamber in an additional chamber. Other aspects of the invention include providing for a controlled extraction with control means in the upper portion of the casing and extraction out of the lower portion. Additional features include axial ribs to abut and support the barrier, and provisions for making connections to the interior of the turbine casing.