SU826511A1 - Method of encapsulating electric machine magnetic core slots - Google Patents

Description

:, I. The invention relates to electrical engineering, in particular, to a method of encapsulating the groove part of a starter winding, for example, an asynchronous motor with a magnetodielectric or high thermal conductivity quick hardness masses. The known method is encapsulated in the grooves of a magnetic circuit of an electrical machine with a fast-hardening mass, in which the mass is introduced into the slots of a mandrel mounted in the stator bore and iOT is applied to it by pressure to transfer the mass into the slots of the magnetic circuit ij. The disadvantage of this method is the complexity of the design, ensuring the transfer of mass to the magnetic interceptor and insufficient production of this method. The purpose of the invention is to simplify the procession and improve performance. The goal is achieved by the fact that, in a known manner, after introducing the mass into its grooves, the conductor and the liquid dielectric are introduced into the internal cavity of the mandrel, as well. pressure is created by the shock wave from the conductor, which is pulsed current. FIG. 1 shows the design of the entire installation for introducing a fast-hardening mass into the grooves of the magnetic circuit / Fig. 2 - mandrel with quick-hardening mass introduced into its gaps. This method consists in that the grooves of an ogfukki 1 are filled with a fast-hardening mass 2 (Fig. 1), inserted into the bore of the stator C, and poured into a dielectric one. liquid 4, for example, polymethylsiloxane PES-2, after which wire 5 connected to the discharge switch 6 is introduced into the liquid. Splitting the wire 1, FOUNDATES from the action of a high-voltage current pulse. supplied from the sparger (Fig. 1). After the explosion and transfer of mass from the mandrel to the grooves of the stator 3, the dielectric liquid inside the mandrel breaks the special cap 7, wearing the upper part of the mandrel, and pours the wormhole hole 8 b into the mandrel (Fig. 1). Then the mass compacted by the forces in the grooves of the core passes, thermal curing.

The gluing mass is transferred from oiqjaB ki b to the supralase schyustranstva completely without residues stuck to the mandrel, which is facilitated by applying on the surface of the grooves of the mandrel before filling with the mass of the separating composition, as well as turning on the half-groove division when removing the mandrel from the bore.

This invention allows to significantly reduce the laboriousness of sully grooves of electric motors. Formula iaobrvteniya. 1. A method for encapsulating grooves of a motor-head unit

in which the mass is introduced into the grooves of the mandrel by means of a wire in the ram of the station and is acted upon by pressure to transfer the mass into the grooves of the magnetic conductor, which, in order to simplify the process and increase the center of the mandrel, after insertion into it Mass grooves are inserted into a 1FOVODNIK and a liquid dielectric, and pressure is created by a shock wave from a conductor to which current pulses are applied.

Sources of information taken into account in the examination

1. USSR author's certificate

Cl, H 02 K 15/12,

No. 53343, 1975.

/// ////////// ////////// // //

(Put. 1

Pvi Z

Claims (1)

Claim . 1. The method of encapsulation of the grooves of the magnetic circuit of an electric machine,