Connecting device for the stator winding rods of electrical machines
First Claim
1. A connecting device for an electrical machine comprising a plurality of stator winding rods having rod ends in which hollow conductors and solid conductors are held together by a metallic yoke which, on the one hand, is connected to a chamber for cooling liquid and, on the other hand, is connected to the hollow conductors and the solid conductors, in which device the hollow conductors protrude from the metallic yoke and are led into the chamber and are fastened, in such a way that the liquid cannot leak, into a brazing plate which is fastened to the end of the metallic yoke where the hollow conductors emerge, characterised in that:
- (a) the metallic yoke at least partially encloses the rod ends and is brazed to the rod ends;
(b) the hollow conductors are led on in a straight line;
(c) at least one distance piece is disposed between the brazing plate and the metallic yoke and is fastened to both the brazing plate and to the metallic yoke; and
(d) the chamber is directly connected to the brazing plate in such a way that the liquid cannot leak.
4 Assignments
0 Petitions
Accused Products
Abstract
The connecting device has yokes (5, 6) brazed to the winding rod ends (1, 2), and the end surfaces of the yokes have distance pieces (10, 11, 12, 13). The hollow conductors (4) protrude beyond the solid part conductors (3) and are led through brazing plates (14, 15) which are brazed to both the hollow conductors (4) and the distance pieces (10, 11, 12, 13). Caps (16, 17) are placed over the brazing plates (14, 15) and brazed to the brazing plates (14, 15) in such a way that there is no leakage of liquid. The brazing points can be inspected at any time and, if necessary, improved because of the distance between the brazing plates (14, 15) and the rod end surface. The water chambers (20, 21) formed by the brazing plates (14, 15) and the caps (16, 17) are solidly connected to the winding rods (1, 2) and to the yokes (5, 6), so that no relative vibrations, which can damage the hollow conductors, can occur. The water chambers (20, 21), which are expensive in manufacture, do not depend on the rod geometry. The whole of the variance is provided by the brazing plates (14, 15) which are relatively simple to manufacture.
-
Citations
12 Claims
-
1. A connecting device for an electrical machine comprising a plurality of stator winding rods having rod ends in which hollow conductors and solid conductors are held together by a metallic yoke which, on the one hand, is connected to a chamber for cooling liquid and, on the other hand, is connected to the hollow conductors and the solid conductors, in which device the hollow conductors protrude from the metallic yoke and are led into the chamber and are fastened, in such a way that the liquid cannot leak, into a brazing plate which is fastened to the end of the metallic yoke where the hollow conductors emerge, characterised in that:
-
(a) the metallic yoke at least partially encloses the rod ends and is brazed to the rod ends; (b) the hollow conductors are led on in a straight line; (c) at least one distance piece is disposed between the brazing plate and the metallic yoke and is fastened to both the brazing plate and to the metallic yoke; and (d) the chamber is directly connected to the brazing plate in such a way that the liquid cannot leak. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An electrical machine comprising:
-
(a) a first stator winding rod having a first end and a second end, said first stator winding rod comprising a plurality of solid conductors and a plurality of hollow conductors each of which has a first end and a second end, said plurality of solid conductor and said plurality of hollow conductors; (i) being parallel to each other; (ii) extending in an axial direction; and (iii) being in thermal and electrical contact with each other, the first ends of said plurality of hollow conductors projecting axially beyond the first ends of said plurality of solid conductors; (b) a first electrically conductive yoke having a first end and a second end, said first electrically conductive yoke partly surrounding the first end of said first stator winding rod and being in thermal and electrical contact therewith, the first end of said first electrically conductive yoke being at least approximately coplanar with the first ends of said plurality of solid conductors comprising said first stator winding rod; (c) at least one first distance piece having a first end and a second end, the second end of said at least one first distance piece being connected to the first end of said first electrically conductive yoke and said at least one first distance piece projecting from said first electrically conductive yoke in the axial direction of said first stator winding rod; (d) a first plate disposed perpendicularly to said first stator winding rod, said first plate; (i) being fixedly connected to the first end of said at least one first distance piece and (ii) having a plurality of first holes therethrough sized, shaped, and positioned to make liquid-tight engagement with said plurality of hollow conductors comprising said first stator winding rod; and (e) a first cap connected to said first plate in a liquid-tight manner and extending therefrom in the direction away from said first stator winding rod, said first cap and said first plate defining a first chamber for liquid, said first cap having a first connection stub for connecting said first chamber to a first liquid fluid conduit. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification