Directly cooled bolted series connection of generator stator coils

• US 4,380,362 A
• Filed: 04/23/1981
• Issued: 04/19/1983
• Est. Priority Date: 04/23/1981
• Status: Expired due to Fees

• Current Assignee: Shinshu Seiki Kabushiki Kaisha
• Original Assignee: Westinghouse Electric Corporation (Paramount Global (f/k/a ViacomCBS Inc.))
• Inventors: Pavlik, Dennis, Swensrud, Roger L., DeLuca, John J.
• Primary Examiner(s): Desmond, Eugene F.
• Assistant Examiner(s): Pirlot, David
• Application Number:
  US06/256,634
• Time in Patent Office: 726 Days
• Field of Search: 339/15, 339/16, 339/112 R, 339/112 L, 339/117 R, 339/117 P, 310/54, 310/58, 310/59, 310/60, 310/71
• US Class Current: 439/487
• CPC Class Codes: H02K 3/22 consisting of hollow conductors

Abstract

Apparatus for connecting two fluid cooled stator coils of a turbine generator electrically in series and hydraulically in parallel. A two piece combination is bolted together to securely fasten an interconnective bundle of leads in such a way as to permit assembly of the leads without interference with a nozzle used in the coolant circuit. The apparatus is utilized in pairs, one for each connected stator coil, and with one bundle of conductive leads disposed between and fastened by each of the pair of the present invention.

Claims

1. A fluid cooled electrical connection apparatus, comprising:

a conductive first member, said first member having a tubular hole therethrough, said tubular hole having a first and a second terminus;

a nozzle, said nozzle having a first and a second terminus, said first nozzle terminus being connected to said first terminus of said tubular hole, said nozzle being in fluid communication with said tubular hole;

a second member, said second member being connectable to said first member, said second member being generally L-shaped;

a first conductor, said first conductor having one terminus disposed between said first and second member;

means for causing said first and second members to be pulled together and to secure said first conductor between said first and second member;

a second conductor, said second conductor having fluid channels therethrough said second conductor being connected to said first member, said fluid channels of said second conductor being in fluid communication with said second terminus of said tubular hole, whereby said fluid channels of said second conductor are in fluid communication with said nozzle; and

whereby said second conductor is in electrical communication with said first conductor.

2. The apparatus of claim 1, wherein said means for causing said first and second members to be pulled together is a plurality of threaded bolts.

3. The apparatus of claim 1, wherein said first member is generally L-shaped.

4. A dynamoelectric machine, comprising:

a plurality of stator coils, each of said stator coils having two termini and having a plurality of coolant channels running therethrough;

a first means for conducting a fluid into a preselected terminus of a first preselected one of said plurality of stator coils;

a second means for conducting a fluid into a preselected terminus of a second preselected one of said plurality of stator coils;

a first pressure plate, said first pressure plate being connectable to said first fluid conducting means, said first pressure plate being generally L-shaped;

a second pressure plate, said second pressure plate being connectable to said second fluid conducting means, said second pressure plate being generally L-shaped;

an electrically conductive lead, said electrically conductive lead having first and second termini, said first terminus of said electrically conductive lead being disposed between said first fluid conducting means and said first pressure plate, said second terminus of said electrically conductive lead being disposed between said second fluid conducting means and said second pressure plate;

means for tightening said first pressure plate and said first fluid conducting means against said first terminus of said electrically conductive lead;

means for tightening said second pressure plate and said second fluid conducting means against said second terminus of said electrically conducting lead; and

whereby said first preselected one of said plurality of stator coils is in electrical communication with said second preselected one of said plurality of stator coils.

5. The dynamoelectric machine of claim 4, wherein:

said first fluid conducting means comprises a conductive member with a tubular hole therethrough and a nozzle connected to a preselected terminus of said tubular hole, said nozzle being in fluid communication with said first preselected one of said plurality of said stator coils.

6. The dynamoelectric machine of claim 4, wherein said second fluid conducting means comprises a conductive member with a tubular hole therethrough and a nozzle connected to a preselected terminus of said tubular hole, said nozzle being in fluid communication with said second preselected one of said plurality of said stator coils.

7. An apparatus for connecting two turbine generator stator coils together, comprising:

a conductive header, said header being connectable to a preselected one of said two stator coils, said header having a plenum chamber therein;

a header cap, said header cap being connected to said header, said header cap having a hole therethrough, said hole being in fluid communication with said plenum chamber;

a conductive heat sink, said heat sink having a tubular hole therethrough, said heat sink being connected to said header cap with said tubular hole being in fluid communication with said header cap hole;

a nozzle, said nozzle being connected to said heat sink with said nozzle being in fluid communication with said tubular hole;

a pressure plate, said pressure plate being connectable to said heat sink and said header cap;

a conductive lead, a first preselected terminus of said conductive lead being disposed between said heat sink and said pressure plate;

whereby said nozzle is in fluid communication with said header; and

whereby said conductive lead is in electrical communication with said header.

8. The apparatus of claim 7, further comprising:

a second apparatus as set forth in claim 7;

a first stator coil, said first stator coil being connected to said header of a first apparatus as set forth in claim 7;

a second stator coil, said second stator coil being connected to said header of said second apparatus as set forth in claim 7;

wherein a second preselected terminus of said conductive lead is disposed between said heat sink and said pressure plate of said second apparatus; and

whereby said first and second stator coils are in electrical communication with each other.