DE555782C

DE555782C - Arrangement of the damper winding on electric machine runners with pronounced poles and radially arranged winding slots that can be produced in groups

Info

Publication number: DE555782C
Application number: DET30567D
Authority: DE
Inventors: Arthur Glaubitz; Josef Nonn
Original assignee: Siemens Schuckertwerke AG; Siemens AG
Current assignee: Siemens Schuckertwerke AG; Siemens AG
Priority date: 1925-07-07
Filing date: 1925-07-07
Publication date: 1932-07-30

Description

Einen wesentlichen Bestandteil des Läufers elektrischer Maschinen, insbesondere Wechselstrommaschinen, bildet die Dämpferwicklung, von deren Zuverlässigkeit die Betriebs-Sicherheit für den Parallellauf der Maschinen in hohem Maße abhängt. Indes bereiten Bau und Konstruktion dieser Dämpferwicklung häufig Schwierigkeiten, insbesondere bei Drehstromgeneratoren mit ausgeprägten Polen, für welche Art von Generatoren man verschiedene Dämpf er wicklungsausführungen kennt. Bei ihnen allen sind die die Dämpferstäbe aufnehmenden Nuten in den Polen sowohl wie auch in den Stabverbindungsringen derartig angeordnet und eingerichtet, daß die Stäbe nur seitlich in die Pole 'eingeschoben und erst dann mittels der Stabverbindungsringe verbunden werden können. Die Wicklungen haben daher alle den Nachteil, daß Einbau und Verbindung der einzelnen Dämpferteile auf umständliche Weise und nur 'unter Aufwendung erheblicher Mittel werkstattseitig hergestellt werden können. Ein Hauptgrund hierfür liegt darin, daß man nicht davon abgehen wollte, die Dämpferwicklungsnuten mit paarweise gleichlaufenden Wandungen auszuführen und dabei gleichzeitig radial anzuordnen.An essential part of the rotor of electrical machines, especially AC machines, The damper winding forms the reliability of the operational safety for the parallel running of the machines depends to a large extent. Meanwhile, the construction and construction of this damper winding are preparing frequent difficulties, especially with three-phase generators with pronounced poles, For which type of generators there are different types of damping known. All of them have the damper rods receiving grooves in the poles as well as also arranged and arranged in the rod connecting rings in such a way that the rods only pushed laterally into the pole and only then connected by means of the rod connecting rings can be. The windings therefore all have the disadvantage that installation and connection the individual damper parts in a cumbersome way and only 'with expenditure considerable resources can be produced in the workshop. A main reason for this lies in that one did not want to deviate from it, the damper winding grooves with pairs run parallel walls and at the same time to arrange them radially.

Insbesondere aber ist auch die Herstellung der die Dämpferstäbe aufnehmenden Nuten in den Polen schwierig und vor allem nur mit erheblichem Arbeits- und Zeitaufwand mög-Ech. Entweder werden diese Nuten als kreisrunde, oben geschlitzte Löcher in Massivpole oder massive Polschuhe gebohrt, oder es werden gestanzte Lamellen, die die Nuten enthalten, mit schwalbenschwanzförmigen Ansätzen oder sonstwie in die Pole eingesetzt.In particular, however, the production of the grooves receiving the damper rods is also important Difficult in Poland and, above all, only possible with considerable effort and time. Either these grooves are made into solid poles as circular holes with a slit at the top or solid pole pieces are drilled, or punched lamellas are used that contain the grooves, with dovetail-shaped approaches or otherwise inserted into the poles.

Der Gegenstand der Erfindung ist eine neue Dämpferwicklung, insbesondere für Drehstromgeneratoren mit ausgeprägten Polen, bei der die die Dämpferstäbe aufnehmenden Nuten in den Polen sowohl wie auch, in den Stabiverbinduingsringen mit nach außen sich erweiternden Seitenwänden ausgeführt sind und die einzelnen Nuten eines Poles bzw. eines Ring¹-abschnittes in einem bestimmten Winkel zueinander radial stehen. Die Befestigung der Dämpf er stäbe in den Nuten erfolgt hier durch Beilegen von Füllstücken, die gegen Herausfliegen infolge auftretender Fliehkräfte durch. Verstemmen, Vierbohren oder sonstwie gehalten werden. Gleichzeitig dienen die Füllstücke zur Wiederherstellung des durch, das Fräsen der Nuten gestörten günstigsten magnetischen Kraftlinienfiusses und unterstützen außerdem die Dämpf er wirkung der Dämpferstäbe.The object of the invention is a new damper winding, in particular for three-phase generators with pronounced poles, in which the damper rods receiving grooves in the poles as well as in the Stabiverbinduingsringen are designed with outwardly widening side walls and the individual grooves of a pole or a Ring ¹ -section are at a certain angle to each other radially. The attachment of the damper he rods in the grooves is done here by enclosing filler pieces that prevent flying out due to centrifugal forces. Caulking, four-drilling or otherwise held. At the same time, the filler pieces are used to restore the most favorable magnetic flux of lines of force disturbed by the milling of the grooves and also support the damping effect of the damper rods.

Derartig ausgebildete Nuten haben den Vorteil, daß sie, sofern die Neigung der sich erweiternden Seitenwände so groß ist, daß die Richtung der inneren dieser Wände auch beiGrooves designed in this way have the advantage that they, provided that the inclination of the widening Side walls is so large that the direction of the interior of these walls is also at

*) Von dein Patentsucher sind als die Erfinder angegeben worden:*) Your patent seeker stated that the inventors were:

Arthur Glaubits und Josef Nonn in Mülheim, Ruhr.Arthur Glaubits and Josef Nonn in Mülheim, Ruhr.

Claims

the outermost grooves of each pole the syirimetric plane of the pole cuts or is at least parallel to it, effortlessly and without spending a lot of time by means of a single set of pole slot milling cutters can be produced. In addition, they also allow the introduction of what was previously completely finished Damper cage, so that the latter is a good reliable connection in all its parts ίο, which ensures the effectiveness of the machine's damping. A pole head, the grooves 2 of which are designed with outwardly widening side walls are shown in Fig. ι. The groove centers are arranged radially.

The following Fig. 2 to 8 now show different types of filler pieces as well as their attachment in the pole head. These filler pieces that are wedged into place Serving the damper bars are simultaneously used to restore the most favorable magnetic Line of force flow and can be used with reference to fixed mechanical installation be carried out with an appropriate cross-section. Support as a result of their conductivity they also control the damping effect of the damper rods. You can or arranged on both sides.

In Fig. 2, the filler consists of a one-sided angle 3, which is around the Damper rod 4 sets and this except for a narrow slot 5, which is made of electrical Reasons left, overstrained. The filler piece is held in the pole head by caulking. The same applies to Fig. 3. Only here the supplement consists of two sides to both sides of the damper rod arranged angles 6, which are also held by caulking in the pole head. In Fig. 4 this is Filler piece designed as a cap 7 which lies over the rod 4 and is caulked. Fig. 5 shows a U-shaped filler piece 8 which surrounds the rod 4 from three sides and by caulking is held. In Fig. 6, this one-sided filler piece is replaced by two U-shaped filler pieces 9, which lie on both sides of the rod 4 and encompass the latter on all sides. In Fig. 7 it consists of a slotted top that encompasses the damper rod on all sides Ring 10. Pn Fig. 8, finally, the filler piece consists of a one-sided, on top The insert placed on the rod, which is also held by caulking.

Of course, instead of caulking, the filler pieces can also be through each other type of fastening are held, so

z. B. by drilling with the pole head or otherwise, especially for runners with high Rotational speed.

In the other Fig. 9 to 11 is a connecting ring piece 12 for receiving the damper rods 4 shown in different views, whose grooves for receiving the rods are made with the pole rod replacement can. This enables the grooves to be milled as quickly and effortlessly as possible. Milling the grooves also allows the individual ring pieces to be machined at the same time can be by combining them and the grooves in one operation mills. The shape of the grooves can be any, depending on the corresponding grooves in the Pole head. The fastening of the rods in these annular grooves can also be arbitrary, such as this is described in the previous illustrations for fastening the rods in the pole grooves is.

Instead of simultaneously fastening the rods in the pole grooves as well as in the grooves the connecting rings can also be fastened on one side only in the ring grooves, in which case the connecting rings on the end faces of the pole in any Way must be attached.

By the above formation of the grooves receiving the damper rods it is achieved that once the grooves in the poles and the connecting rings in groups with a single one Set of pole milling cutters can be produced at the same time; but then the previously completely finished one can also be used The damper cage is inserted into the grooves and can be easily attached here. One is therefore able to manufacture the damper winding with respect to its connection points the greatest care should be taken to ensure the effectiveness of the damping of the machine is essential.

Patent akspkucu:

Arrangement of the damper winding in rotors of electrical machines with pronounced Poles and radially arranged winding slots which can be produced in groups, characterized in that the Winding grooves in the poles as well as in the connecting rings of the bars with outwardly widening side walls executed and the damper rods in the grooves with the addition of fillers made of magnetizable material in are anchored in a known manner by caulking.

1 sheet of drawings