SU1429222A2 - Rotor of hydraulic-turbine driven generator - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the installation-pe1 ") operation. The rotor of the hydrogenerator contains a rim 5 and wedge strips 3 installed on the core 1. Due to the fact that intermediate inserts 4 are installed between the wedge bars of the second and subsequent frames from the upper end of the rows, this goal is achieved. 2 Il.

Description

 AiL. (loberiuto)

L

to

OK

yu yu

IG

five

ten

IS

20

1U29222

The invention relates to electrical engineering, in particular to the rotors of hydrogenerators, and is an improvement to the rotor of a hydrogenerator according to author. No. 1070649.

The purpose of the invention is to simplify the assembly and repair work.

Fig. 1 shows the frame of the rotor with a laminated rim and half axes5 on the ball. 2 - section aa on fig „1„

The frame 1 of the rotor on the outer ends of the spokes 2 has welded wedge holders 3 located on the core in the axial direction, in this case in three rows. The wedge strips 3 of each row are uniformly displaced in the tangential direction relative to the wedge strips of adjacent rows. Intermediate inserts 4 are located between the laminated rim 5 and the wedge strips 3 of the second and third tons of the upper end of the row and are rigidly fixed on the rim, for example, by welding. It is possible to fasten vstn ok on the rim and other known method. On the laminated rim 5 of the rotor fixed poles 6.

From turning one relatively ore body 1 and the rim 5 are fastened with ary wedges 7, driven both by vertical grooves 8 on the first wedge strip from the end of the row and grooves 9 on the rotor rim, and into the vertical grooves 8 on the wedge bands of the third and third The end of the row of grooves 10 on the inserts are similar. basics 9 on the rim

The rim 5 of the rotor is held off from the axial displacements relative to the Stova 1, for example, by the usual supporting elements, the And keys, and 12, fixed in the па-grooves of the K-line strips.

25

thirty

35

40

and h

But no ud u l ku and et ve sv di tso i et os os n

you know this

in both the harvests

ca on tat tato ro mom mi sos no but no

The gap between the mating surfaces of the rim 13 and the surfaces of the 14 wedge strips of the second and the third from the upper end of the row, as well as the gap between the mating surfaces of the 14 wedge strips and the rim 13, is the same and the minimum. The radial size of the insert is chosen taking into account the implementation of the groove 10 under the wedge 7 and should not be less than the size of the air gap between the rotor and the stator of the hydrogenerator, which takes into account the need to ensure that the rotor is lowered into the stator bore.

0

S

0

five

0

five

0

and is a production clearance.

When assembling the rotor, the wedges 7 are installed in the slots 8-10, respectively, on the wedge strips, rim and inserts with the necessary dullness and conveniences for mounting and dismounting on all rows of the wedge strips, allowing to obtain high-quality cleavage of the rim 5 on the core 1. For the second and third rows from the upper end, this is ensured by the presence of free space equal to the radial thickness of the insert between the end of the surface 14 of the wedge strips 3 and the inner surface 15 of the rim 5, in contrast to the known rotor design. e, when dismantling the core, carry out wedges on all rows, using the devices usually used for this.

When repairing a turbine mate with a hydrogenerator, it is necessary to remove the core of rotor 1 from rim 5; , rator, for example, on the brakes.

When the core of the rotor 1 is lowered into the rim 5 at the moment the frame enters the rim, there will be a sufficiently large gap between the surface of the rim and the surface of the wedge strips of the second and third ribs from the upper end of the series, i.e. equal to or greater than the air gap between the rotor and the stator of the hydrogenerator. This makes it possible to quickly and safely lower the core into the rim, in this case

five

tea by 2/3 of the rim length, then using technological wedges (not shown) installed in the grooves 9 of the rim and grooves 8 on the second and third wedge strips for the upper end of rows, to produce an exact alignment of the core relative to the rim and subsequent lowering of the skeleton with a small the gap between the rim and the wedge strips of the first row from the end and inserts and the wedge strips of the second and third from the end of the row. This centering of the core relative to the rim allows, if necessary, to produce a rim shape if necessary.

Thus, the proposed device due to the availability of wedges installed between the rim and the wedge bars of the core, simplifies their installation and disassembly, allows for better wedging of the rim on the core, provides a simpler assembly of the rotor core with the rim separately from the other directly in the crater of the unit and a simpler disassembly of the rotor core separately from the rim, at the same time reducing the mechanical stresses in the supporting elements of the rim with the skeleton and the knot joint of the skeleton with the rim of the rim.

Claims (1)

Invention Formula The rotor of the hydrogenerator tioasT.cfit 1070649, characterized in that, in order to simplify the installation and repair work, it is equipped with intermediate inserts rigidly fixed on the gap between the wedge bolts of the second rotor core and after the last of the rows.