US 4,365,176 AGranted

Liquid cooling system for a hydrogenerator rotor

AssigneeWestinghouse Electric Corp.

InventorsRichard D. Nathenson, Charles W. Pipich, Joseph R. Kopnitsky, deceased

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Abstract

A liquid cooling system for a dynamoelectric machine's rotor winding. Concentrically arranged intake and outtake coolant pipes extend a desired axial distance within a centrally arranged bore in the rotor. Both pipes are joined to a distribution block also disposed in the rotor bore. The distribution block transmits coolant from the intake pipe to arcuately-shaped coolant distribution manifolds through radially-directed pipes and transmits coolant from arcuately-shaped coolant collection manifolds to the outtake pipe through radially-directed pipes. The manifolds are fluidly connected to the rotor winding either by rigid non-conducting tubing having bends therein for permitting thermal expansion thereof or flexible insulation tubing such as Teflon.RTM..

Claims12

Dependent claims

A liquid-cooling system for a dynamoelectric machine's rotor having a rotatably mounted shaft with a central bore therethrough;

a rim mounted on said shaft;
and a multiplicity of salient poles mounted about a periphery of said rim, each of said salient poles including a coil of conductor;
said cooling system comprising:
(A) a plurality of axial-coolant pipes including an intake pipe, and an outtake pipe concentrically disposed about said intake pipe;
(B) a rotor inlet pipe connected to said intake pipe, and connectable at its other end to an external coolant supply system;
(C) a rotor discharge pipe connected to said outtake pipe, and connectable to said external coolant supply system;
(D) a manifold including a plurality of arcuately-shaped coolant pipes;
(E) a plurality of radially-directed pipes which hydraulically connect to said manifold, a preselected number of said radially-directed pipes being connected to said manifold to carry coolant to said salient poles, an other preselected number of said radially-directed pipes connected to said manifold to carry coolant away from said salient poles;
(F) a distribution block which is connected to said axial-coolant pipes and to said radially-directed pipes, said distribution block being disposed in said bore and including a base having pipe-connecting features and means for covering said base;
(G) means for circulating coolant within each of said salient poles;
and
(H) means for connecting said manifold to said coolant circulating means.

9 more elements

A cooling system for a hydrogenerator, comprising:

a rotor having a plurality of salient poles attached to the periphery of said rotor, said rotor having a central bore therethrough, said bore being concentric and coaxial with said rotor;
an intake pipe disposed axially within said bore;
an outtake pipe disposed axially within said bore, said intake and outtake pipes being generally coaxial with each other and with said bore;
means for supplying a flow of coolant to said intake pipe;
means for removing a flow of coolant from said outtake pipe;
a first manifold, said first manifold including a first arcuately-shaped pipe;
a second manifold, said second manifold including a second arcuately-shaped pipe;
a distribution block connected to said intake and outtake pipes;
a first means for connecting said first manifold to said distribution block, said connecting means providing fluid communication between said first manifold and said intake pipe;
a second means for connecting said second manifold to said distribution block, said connecting means providing fluid communication between said second manifold and said outtake pipe;
a third means for connecting said first manifold in fluid communication with a first group of said salient poles;
and
a fourth means for connecting said second manifold in fluid communication with a second group of said salient poles.

10 more elements

Dependencies are inferred from the claim text.