Biased securement system for end winding conductor

• US 4,942,326 A
• Filed: 04/19/1989
• Issued: 07/17/1990
• Est. Priority Date: 04/19/1989
• Status: Expired due to Term

• Current Assignee: Siemens Power Generation, Inc.
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Ponce, Hector O., Butler, John M. III
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): LABALLE, CLAYTON E
• Application Number:
  US07/340,196
• Time in Patent Office: 454 Days
• Field of Search: 310/91, 310/194, 310/214, 310/260, 310/270
• US Class Current: 310/260
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence
• CPC Class Codes: Y10S 174/20 Stator

Abstract

A biased securement system for end winding conductors of a turbine generator stator has a support ring and a biased wedge system that compresses the end windings in both a radial and circumferential direction. The biased wedge system includes a pair of spacer blocks with confronting angular surfaces and a triangular shaped wedge that is biased towards the support ring by use of a belleville spring washer.

Claims

1. A biased securement system for end winding components of an electromechanical apparatus comprising:

a support ring disposed about a plurality of peripherally spaced said end windings;

a biased wedge system located between said spaced end windings to compress said end windings in both a radial and circumferential direction;

said biased wedge system including a pair of confronting spacer blocks flush with an inner surface of said support ring; and

a wedge disposed between the pair of spacer blocks to bias the same in a circumferential direction, said spacer blocks having confronting angular surfaces which converge in the direction of said support ring and said wedge is a triangular-shaped wedge slideably engageable with said confronting angular surfaces, and a biasing means to bias said wedge towards said support ring.

2. The biased securement system as defined in claim 1 wherein said wedge has a passageway therethrough, said support ring has a threaded bore therein, and a bolt extends through said passageway and is threadably engaged in said threaded bore.

3. The biased securement system as defined in claim 2 wherein said bolt has a head thereon and said biasing means comprises a belleville spring washer disposed between said head and said wedge.

4. The biased securement system as defined in claim 3 wherein said spacer blocks have a hollow in which an end winding conductor seats.

5. A biased securement system for end winding conductors of an electromechanical apparatus comprising:

a support ring disposed about a plurality of peripherally spaced said end windings;

a biased wedge system located between said spaced end windings to compress said end windings in both a radial and circumferential direction;

said biased wedge system including a pair of confronting spacer blocks, a wedge and a biasing means;

said spacer blocks having confronting angular surfaces which converge in the direction of said support ring;

said wedge being a triangular shaped wedge, slidably engageable with said confronting angular surfaces, having a passageway therethrough, with said support ring having a threaded bore therein, and a bolt extends through said passageway and is threadedly engaged in said threaded bore, said bolt having a head spaced from the upper surface of said wedge; and

said biasing means being a belleville spring washer disposed between the head of said bolt and said wedge.

6. The biased securement system as defined in claim 5 wherein said spacer blocks have a hollow in which an end winding conductor seats.

7. The biased securement system as defined in claim 5 wherein said spacer blocks are trapezoidal in shape.

8. The biased securement system as defined in claim 5 wherein each said spacer block has a channel therein, with said channels confronting each other, and said angular surfaces are defined by said channels.

9. A biased securement system for end winding conductors of an electromechanical apparatus comprising:

a support ring disposed about a plurality of peripherally spaced said end windings, said support ring having an inner surface and a threaded bore; and

a biased wedge system located between said spaced end windings to compress said end windings in both a radial and circumferential direction;

said biased wedge system including;

a pair of confronting spacer blocks trapezoidal in shape and flush with said inner surface of said support ring, said spacer blocks having confronting angular surfaces which converge in the direction of said support ring;

a triangular shaped wedge slideably engageable with said confronting angular surfaces and disposed between said pair of spacer blocks to bias the same in a circumferential direction, said wedge having a passageway therethrough;

a bolt extending through said passageway and threadedly engaged in said threaded bore and having a head; and

a belleville spring washer disposed between said head and said wedge to bias said wedge towards said support ring.

10. A biased securement system for end winding conductors of an electromechanical apparatus comprising:

a support ring disposed about a plurality of peripherally spaced said end windings, said support ring having an inner surface and a threaded bore; and

a biased wedge system located between said spaced end windings to compress said end windings in both a radial and circumferential direction;

said biased wedge system including;

a pair of confronting spacer blocks flush with said inner surface of said support ring, each spacer block having a channel therein with said channels fronting each other, said channels defining confronting angular surfaces which converge in the direction of said support ring;

a triangular shaped wedge slideably engageable with said confronting angular channels and disposed between said pair of spacer blocks to bias the same in a circumferential direction, said wedge having a passageway therethrough;

a bolt extending through said passageway and threadedly engaged in said threaded bore and having a head; and

a belleville spring washer disposed between said head and said wedge to bias said wedge towards said support ring.

11. A biased securement system for end winding conductors of an electromechanical apparatus comprising:

a support ring disposed about a plurality of peripherally spaced end windings, said support ring having an inner surface and a bore therethrough; and

a biased wedge system located between said spaced end windings to compress said end windings in both a radial and circumferential direction;

said biased wedge system including;

a pair of confronting spacer blocks flush with said inner surface of said support ring, said spacer blocks having confronting angular surfaces which converge in the direction of said support ring;

a triangular shaped wedge slideably engageable with said confronting angular surfaces and disposed between the pair of spacer blocks to bias the same in a circumferential direction, said wedge having a passageway therethrough;

a bolt extending through said passageway and said bore said bolt having a head and secured with a nut against said support ring; and

a belleville spring washer disposed between said head and said wedge to bias said wedge towards said support ring.