Rotor end caps and a method of cooling a high speed generator
First Claim
1. A multi-pole high speed generator comprising a stator and a rotor, comprising:
- a shaft having an axial bore with at least one orifice at each of a first and second end thereof;
a rotor assembly mounted on the shaft, the rotor assembly including a rotor having a plurality of poles and at least one support wedge positioned between each of the poles, cash of the at least one support wedge having at least one supply port in each end open to at least one axial channel in the at least one support wedge; and
an end cap mounted on the rotor at opposite ends thereof, each of the end caps having means for restraining the at least one support wedge from radially outward movement and means extending from the at least one orifice at each of the first and second ends of the shaft for circulating a cooling medium between the shaft and the at least one support wedge to cool the rotor assembly during operation of the multi-pole high speed generator.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved apparatus and method of having a pair of end caps on a rotor assembly of a multi-pole high-speed generator is provided for use with a turbine engine. The rotor assembly provides improved balancing and/or cooling during generator operation. The rotor assembly includes a plurality of poles and at least one support wedge positioned between each of the poles. The rotor assembly is mounted on a shaft. An annular flange of the end caps restrains the support wedges in the rotor assembly for improved balancing and maintaining concentricity. The end caps may also include a manifold for circulating a cooling medium through the shaft to and from the support wedges to cool the generator.
-
Citations
13 Claims
-
1. A multi-pole high speed generator comprising a stator and a rotor, comprising:
-
a shaft having an axial bore with at least one orifice at each of a first and second end thereof;
a rotor assembly mounted on the shaft, the rotor assembly including a rotor having a plurality of poles and at least one support wedge positioned between each of the poles, cash of the at least one support wedge having at least one supply port in each end open to at least one axial channel in the at least one support wedge; and
an end cap mounted on the rotor at opposite ends thereof, each of the end caps having means for restraining the at least one support wedge from radially outward movement and means extending from the at least one orifice at each of the first and second ends of the shaft for circulating a cooling medium between the shaft and the at least one support wedge to cool the rotor assembly during operation of the multi-pole high speed generator. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A multi-pole high speed generator, comprising:
-
a shaft having an axial bore with at least one orifice extending radially from the bore at each of a first and second end thereof;
a rotor mounted on the shaft, the rotor having a plurality of poles and at least one support wedge positioned between each of the poles, the at least one support wedge having at least one mid supply port end at least one outlet supply port open to at least one axial channel in the at least one support wedge;
a first end cap disposed over a first axial end of the at least one support wedge and having radial fluid flow galleries extending from the at least one orifice at the second end of the shaft through which fluid exits the shaft to the at least one inlet supply port in each of the at least one support wedge hind a second cad cap disposed over a second axial cad of the at least one support wedge and having radial fluid flow galleries extending from the at least one outlet supply port in the at least one support wedge to the at least one orifice at the that end of the shaft through which fluid enters the shaft before exiting the rotor.
-
-
7. An end cap for a multi-pole high speed generator having a rotor assembly with a plurality of poles and support wedges therebetween, the end cap comprising:
-
a central bore;
a circular end wall circumferentially surrounded by an annular flange; and
paired end cap openings in the end wall with each pair at 90°
angles to one another, each of the paired end can openings includes a cooling medium feed port between the openings in each pair of paired end can openings.- View Dependent Claims (8, 9, 10, 11, 12, 13)
-
Specification