DONALD CHESTER LITZ
Engineers in Monroeville, PA
License number
Pennsylvania PE015373E
Category
Engineers
Type
Professional Engineer
Address
Address
Monroeville, PA 15146
Professional information
Fluid-Cooled Rotating Member With Improved Coolant Exhaust Structure Suitable For Superconducting Dynamoelectric Machinery
US Patent:
4017755, Apr 12, 1977
Filed:
Oct 31, 1974
Appl. No.:
5/519725
Inventors:
Donald C. Litz - Monroeville PA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
H02K 900
US Classification:
310 40R
Abstract:
In a fluid-cooling rotating member, such as a dynamoelectric machine rotor with superconducting windings, the fluid exhaust is used to cool structural members connecting ambient and cool zones in order to minimize heat flow to the cold elements. The coolant in the exhaust structure is confined to a path along the axis of rotation. This avoids radial coolant flow paths and radially displaced coolant flow paths in order to eliminate convection currents. The axially located coolant conduit is surrounded by and spaced from a supporting sleeve with a plurality of thermally conductive members extending between the coolant conduit and the supporting sleeve through an evacuated volume at axially spaced intervals.
Superconductive Dynamoelectric Machine With Improved Cryogenic Support Arrangement
US Patent:
4060742, Nov 29, 1977
Filed:
Dec 31, 1975
Appl. No.:
5/645588
Inventors:
Donald C. Litz - Monroeville PA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
H02K 900
US Classification:
310 52
Abstract:
A superconducting dynamoelectric machine has a cryogenic portion of the rotor supported on the ambient temperature portion of the rotor by relatively long and thin spokes. The spokes extend between the ambient temperature portion and a flange located on a cryogenic temperature portion. The materials of the flange and spokes are selected so that contraction of the spokes along their length will be compensated for by contraction of the flange in that direction. Contraction in the transverse direction is compensated for by an appropriate displacement of the end of the spoke connected to the ambient temperature portion. Alignment and tension of the spoke is accurately achieved by an appropriate adjusting arrangement.