Apparatus and method for consolidating conductive strands of a stator coil
First Claim
1. An inner-cooled half coil for use in a stator phase winding of an electrical generator, the half coil comprising:
- a stack of cooling tubes;
a first stack of conductive strands adjacent a first side of the stack of cooling tubes;
a second stack of conductive strands adjacent a second side of the stack of cooling tubes;
a header conductively bonded to each strand of the first stack of conductive strands and to each strand of the second stack of conductive strands for consolidating the first and second stacks of conductive strands; and
means for allowing a coolant to flow through the header comprising a plurality of apertures formed in the header.
4 Assignments
0 Petitions
Accused Products
Abstract
A header (10) for use with an inner-cooled half coil (13) in a stator phase winding of an electrical generator. The half coil may include a stack of cooling tubes (16,18) with a first stack of conductive strands (20, 22, 24, 26) adjacent a first side of the stack of cooling tubes and a second stack of conductive strands (20, 22, 24, 26) adjacent a second side of the stack of cooling tubes. A header (10) is conductively bonded (92) by brazing to each strand of the first stack of conductive strands (20, 22, 24, 26) and to each strand of the second stack of conductive strands (20, 22, 24, 26) for consolidating the first and second stacks of conductive strands. A means (34, 36) for allowing a coolant to flow through the header (10) may be provided to allow coolant to flow through the stack of cooling tubes (16, 18). The means (34, 36) for allowing coolant to flow through the header (10) may include a plurality of apertures (34, 36) that are aligned with respective ones of the stack of cooling tubes (16, 18) for inspecting the cooling tubes through the apertures. Conductive connectors (54, 58) may be attached to and removed from the header without affecting the consolidation of the conductive strands.
26 Citations
24 Claims
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1. An inner-cooled half coil for use in a stator phase winding of an electrical generator, the half coil comprising:
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a stack of cooling tubes; a first stack of conductive strands adjacent a first side of the stack of cooling tubes; a second stack of conductive strands adjacent a second side of the stack of cooling tubes; a header conductively bonded to each strand of the first stack of conductive strands and to each strand of the second stack of conductive strands for consolidating the first and second stacks of conductive strands; and means for allowing a coolant to flow through the header comprising a plurality of apertures formed in the header. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An inner-cooled halt coil for use in a stator phase winding of an electrical generator, the half coil comprising:
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a first stack of cooling tubes; a second stack of cooling tubes; a first stack of conductive strands adjacent a first side of the first stack of cooling tubes; a second stack of conductive strands adjacent a second side of the first stack of cooling tubes; a third stack of conductive strands adjacent a first side of the second stack of cooling tubes; a fourth stack of conductive strands adjacent a second side of the second stack of cooling tubes; a first header conductively bonded to each strand of the first and second stacks of conductive strands for consolidating the first and second stacks of conductive strands; a second header conductively bonded to each strand of the third and fourth stacks of conductive strands for consolidating the third and fourth stacks of conductive strand; and the first header and the second header each comprising respective ones of; an interior conductive member having a first slot formed therein for receiving a first stack of conductive strands; and an exterior conductive member mated with the interior conductive member to form a second slot there between for receiving a second stack of conductive strands. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A double-header for consolidating a plurality of stacks of conductive strands in an inner-cooled half coil for use as part of a stator phase winding in an electrical generator wherein the half coil includes at least one stack of cooling tubes with respective ones of the plurality of stacks of conductive strands adjacent the at least one stack of cooling tubes, the double-header comprising:
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a first header comprising a first exterior conductive member and a first interior conductive member wherein the first header is conductivity bonded to each strand of a first and second stack of conductive strands for consolidating the first and second stacks of conductive strands so that the first header may be conductively connected with another device of the electrical generator; a second header comprising a second exterior conductive member and a second interior conductive member wherein the second header is conductively bonded to each strand of a third and fourth stack of conductive strands for consolidating the third and fourth stacks of conductive strands so that the second header may be conductively connected with another device of the electrical generator; an insulating barrier disposed between the first header and the second header; and
wherein the respective ends of the stacks of conductive strands are recessed below an outer surface of the first header and an outer surface of the second header so that a conductive alloy may be placed within recesses during conductive bonding of the respective stacks of conductive strands to the first header and the second header. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification