John M Hess

US Patent:

56054386, Feb 25, 1997

Filed:

Dec 29, 1995

Appl. No.:

8/580694

Inventors:

Steven S. Burdgick - Clifton Park NY
John R. Hess - Clifton Park NY
Gary D. Mercer - Ballston Lake NY
Gregory A. Crum - Greenville SC
James E. Cencula - Ballston Lake NY
John A. Eastman - Clifton Park NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F01D 2526

US Classification:

4151821

Abstract:

A turbine casing is provided in two casing halves joined one to the other along a horizontal splitline having flanges with spaced boltholes. A circumferentially extending rib is provided about each casing half at a location just forward of the turbine buckets to minimize or eliminate distortion caused by internal pressure and meridional roll of the casing. One or more axially extending ribs is provided on each casing half. The axial ribs have a radial stiffness which substantially matches the stiffness and thermal response of the flanges.

US Patent:

RE326852, May 31, 1988

Filed:

Feb 13, 1984

Appl. No.:

6/579468

Inventors:

John M. Hess - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 904

US Classification:

415139

Abstract:

In a double flow section of a steam turbine, the inner web of the diaphragm surrounding the rotor shaft in the region of divergence of the steam flow paths, is fabricated in the form of two cylindrical shells which are held together either in a fixed position or in a relatively fixed position which permits some slight axial motion between the shells. This form of diaphragm eliminates a number of machining and fabrication alignment problems and additionally permits differential axial expansion of the two pieces occurring as a result of internal thermal steam conditions.

US Patent:

43927785, Jul 12, 1983

Filed:

Apr 1, 1981

Appl. No.:

6/249894

Inventors:

John M. Hess - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 904

US Classification:

415139

Abstract:

In a double flow section of a steam turbine, the inner web of the diaphragm surrounding the rotor shaft in the region of divergence of the steam flow paths, is fabricated in the form of two cylindrical shells which are held together either in a fixed position or in a relatively fixed position which permits some slight axial motion between the shells. This form of diaphragm eliminates a number of machining and fabrication alignment problems and additionally permits differential axial expansion of the two pieces occurring as a result of internal thermal steam conditions.