Phase lead for connecting stator coils and parallel phase rings

• US 4,199,700 A
• Filed: 07/31/1978
• Issued: 04/22/1980
• Est. Priority Date: 07/31/1978
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Swensrud, Roger L., Jones, Warren W., Daugherty, Roger H.
• Primary Examiner(s): Skudy, R.
• Application Number:
  US05/929,587
• Time in Patent Office: 631 Days
• Field of Search: 310/71, 310/52, 310/260, 310/53, 310/54, 310/57, 310/58, 310/60 R, 310/64, 310/65, 336/62, 339/112
• US Class Current: 310/71
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/22 consisting of hollow conductors
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132

Abstract

A dynamoelectric machine utilizing stiff, multiple component phase leads for connecting potentially misaligned stator coils and parallel phase rings. The phase leads, when attached to stator coil and phase ring coolant headers, provide electrical communication therebetween. The first and second phase lead components have a hole and cylindrical portion respectively wherein the cylindrical portion is insertable in the hole. Such phase lead hole has a longitudinal axis perpendicular to both slot elongation directions. Intimate electrical contact between the phase lead components and their connected coolant headers is insured by disposidng solder between their mateable, plane surfaces. Intimate electrical contact between the phase lead components is insured by brazing the components together at the interface between the assembled cylindrical portion and hole. Translational misalignment between the connectable phase ring and coil is accommodated in the three perpendicular directions by providing the slotted openings and permitting insertion of the cylindrical phase lead portion into the phase lead hole for selected distances. Such selective insertion is obtained by supplying extra stock to the cylindrical phase lead portion and trimming that portion to the appropriate length at assembly time.

Claims

1. A dynamoelectric machine comprising:

a stator member;

a plurality of electrical coils cooperatively associated with said stator member, said coils constituting a stator winding with each coil having two terminating ends, said coils having internal passageways through which fluid coolant is transmissable;

a plurality of arcuate shaped phase rings disposed on at least one axial end of said stator, said phase rings having internal passageways through which fluid coolant is transmissable;

a plurality of coil headers connected to said coil terminating ends for manifolding coolant through the coil'"'"'s internal passageways, said coil headers each including a contact portion having at least one opening therein;

a plurality of phase ring headers connected to said phase rings for manifolding fluid coolant through said ring'"'"'s internal passageways, said phase ring headers each including a clamping portion having at least one opening therein;

a plurality of phase leads for electrically connecting said ring and coil headers, each of said phase leads comprising;

a first component having a hole and at least one opening therein, said first component being mateable with one of said coil headers when said component'"'"'s opening is generally aligned with the mateable coil header'"'"'s opening to form a first pair of openings wherein at least one of said first pair of openings constitutes a slot which is elongated in a first direction and

a second component having a cylindrical portion and at least one opening therein, said second component being mateable with one of said ring headers, said second component'"'"'s opening being generally alignable with the mateable ring header'"'"'s opening to form a second pair of openings wherein at least one of said second pair of openings constitutes a slot which is elongated in a second direction which is perpendicular to said first direction, said cylindrical portion being insertable in said hole in a direction perpendicular to said first and second directions; and

a plurality of fasteners receivable in said aligned openings for securing said phase leads to said ring and coil headers.

2. The dynamoelectric machine of claim 1 wherein said ring headers each include a hole whose longitudinal axis is substantially parallel to the longitudinal axis of said first component'"'"'s hole, each of said ring header'"'"'s holes accepting a cylindrical portion of said ring.

3. The dynamoelectric machine of claim 1 wherein said phase lead components mate with said coil and ring headers along plane surfaces.

4. The dynamoelectric machine of claim 3 wherein solder is disposed between the mateable plane surfaces of the phase lead components and headers.

5. The dynamoelectric machine of claim 1 wherein brazing compound is disposed between said phase lead'"'"'s mateable hole and cylindrical portion for securing said phase lead components together.