SU1767621A1 - Quasipole electric machine stator - Google Patents

Description

one

(21) 4854906/07 (22) 07.27.90 (46) 07.10.92. Bul №37

(71) Moscow aggregate plant Dzerzhinets

(72) V.A. Khabarov

(56) 1. Patent of Great Britain No. 1112129, cl. H 02 K 3/50, 1968.

2. USSR author's certificate No. 570153, cl. H 02 K 3/51, 1975. (54) ROTOR OF A NON-VOLTAGE ELECTRICAL MACHINE

(57) Rotor of non-pole electric machine. Usage: non-pole synchronous generators. The invention: the rotor contains a magnetic conductor 2 mounted on the shaft 1. In the grooves of the magnetic conductor there are coils 3 of the excitation winding. The frontal parts of the coils are fixed with rings and removable holders mounted in cutting rings. The holders are secured by rings 15 which are included in the grooves 17 in the walls 16 of the holder. 3 il.

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The invention relates to electric machines, in particular to non-pole synchronous generators, and can be used in high-speed power sources.

The known design of a non-pole electric machine, in which the frontal parts of the rotor winding are held by special elements fixed in a cylindrical support located under the frontal parts, and made in the form of studs passing through the holes in the conductors (1).

The disadvantages of the known construction are low-tech and low reliability due to the fact that despite a large number of retaining elements, the winding is not fixed along its entire length.

Also known is a rotor of a not-pole electric machine, which is closest to the proposed one, containing an installed magnetic core with grooves, in which are located the longitudinal parts of the coils of the concentric excitation winding fixed by wedges, and the frontal parts are fixed by rings with grooves for accommodating the transverse parts of the coils and grooves for longitudinal parts and groove wedges (2). |

A disadvantage of this device is the impossibility of replacing the coils in the event of their breakdown without removing all subsequent winding rows, i.e. in the case of a sample of the first row of coils, it is necessary to remove all subsequent rows of workable coils and ring holders.

The aim of the invention is to increase reliability and simplify repair

For this purpose, a rotor of a non-pole electric machine containing a magnetically mounted wire with grooves in which the longitudinal parts of the concentric excitation winding coils are fixed and wedged, and the frontal parts are fixed with rings with slots to accommodate the transverse parts of the coils and grooves for the longitudinal parts and grooves wedges, provided with removable holders in the form of secors with parallel coats, in the walls of which on the axis of rotation of the shaft are made grooves, and retaining rings placed in the aforementioned grooves and rigidly fixed on the shaft, the notches in the rings are made in the form of slots with adjoining parallel flips, open towards the outer diameter of the rotor,

FIG. 1 shows a longitudinal section of the excitation windings of the rotor along BB; in fig. 2 is a longitudinal section of the windings along A-A; in fig. 3 - section no B-B.

On the shaft 1 of the electric machine, there is a package of iron 2 of the rotor with not exposed poles with a concentric excitation winding in the form of a coil 3. The longitudinal parts 4 of the coil 3 are located

0 in the grooves 5 of the iron packet 2 and held by wedges 6. To hold the transverse part 7 of the coils 3, there are rings 8 with retaining elements 9 according to the number of poles. Rings 8 have grooves 10 for

5 accommodating the longitudinal part 4 of the frontal parts of the coils 3, which are held by the wedges 6. The retaining elements 9 are slots 11 in the ring 8 with parallel flats 12, open in

0 side of the outer diameter of the rotor, and removable holders 13 in the form of sectors. Holders 13 with parallel flips 14 are installed in slots x 11 along paired parallel flats 12. On shaft 1

5 rigidly mounted rings 15, which are fixed in the walls 16 of the holders 13 along the grooves 17.

Rings 8, removable holders 13 and retaining rings 15 are mounted on the shaft

0 as follows.

After winding and laying the inner layer of the coils 3 and seizing them with wedges 6 in the grooves 5 of the iron package 2, the ring 8 is mounted on the shaft 1 so that the longitudinal

The 5 parts 4 and the transverse parts 7 of the coils 3 were placed in the slots x of the ring 11, and the grooves 10 of the ring 8 were a continuation of the slots 5 of the package of iron 2 for the subsequent layers of the coils 3. After laying the coils 3 of the second

0 layers of them are wedged in the grooves of the package 2 and the ring 8. Similarly, the subsequent layers are laid with their seizure in the grooves. After that, the first row of removable holders 13, made in the form of sectors, are installed in such a way that the parallel flats 12, opened towards the outer diameter of the rotor, are mounted on the holders

13 fixed on parallel flips.

14 in the slot 11 Then the ring 0 15 is inserted simultaneously into all the grooves 17 of the holders 13 while simultaneously centering it on the shaft 1. The second row of removable holders 13 are installed in the same way. During the installation of the holders of the second row, they fix the previous ring 15, etc. . The last ring 8 is made without grooves, for convenience, combined with the ring 15 and mounted on the shaft along the threads.

Each ring 8, together with the holders 13 and the ring 15, receives the mechanical load from the centrifugal forces of the transverse parts 7 of the coils 3 of the previous layer and the longitudinal parts 4 of the coils of the 3 subsequent layers. The number of rings 8 corresponds to the number of coils of the excitation windings per pole, and the required dimensions of the holders 13 of the rings 8, 15 and the grooves 17 are determined by strength calculations.

If defective coils are found after the rotor has been assembled, they can be easily replaced by removing the rings 15 and the holders 13.

The use of the described rotor design will allow access to the winding coils at any stage of the product manufacture and operation.

In addition, the rotor of this design is fully restored by replacing only the defective coil, which significantly reduces the time and cost of restoring the rotor and provides increased reliability.

Claims (1)

Claims of the invention A rotor of a non-pole electric machine containing a magnetic core mounted on a shaft with grooves in which the longitudinal parts of the concentric excitation winding coils are mounted, fixed with wedges, and the frontal parts are fixed with rings in which recesses are made to accommodate transverse parts coils and grooves for longitudinal parts and groove wedges, characterized in that, in order to increase reliability and simplify repairs, it is provided with removable holders made in the form of sectors with parallel coats, in the walls of which on the axis of rotation of the shaft are made grooves, and retaining rings placed in the said grooves and rigidly fixed on shaft, and the notches in the rings are made in the form of slots with adjacent parallel flats, open in the direction of the outer diameter of the rotor. Aa I FIG. 2 6-b tFig3,