SU1319170A1 - Stator-winding assembly of electric machine - Google Patents

Abstract

The invention relates to electrical engineering, in particular to electrical machines. The purpose of the invention is to improve the reliability of interphase insulation by improving its fixing. The device contains a coil winding, on each phase coil group insulating interphase strips are installed. ledges. The projections are separated from the rest of the gasket by lines of reduced stiffness. There are fasteners on the gaskets, which are also separated from it by lines of reduced rigidity and closed on the frontal parts. 3 il. I (lx o vl

Description

1I

The invention relates to electrical engineering, in particular to coiled stators of electrical machines with insulating interphase spacers.

The purpose of the invention is to increase the reliability of phase-to-phase insulation by improving its fastening.

FIG. 1 shows an example of the isolation of an interphase insulating gasket; in fig. 2 - stator with partially laid winding and interphase gasket, inside view; in fig. 3 - the same, V1SC outside.

The interfacial gasket is made of sheet electrically insulating material (for example, film-plastic cardboard, film-cardboard, etc.) and includes an insulating part 1 that repeats the shape of the frontal part 2 of the coil winding group fixing the whiskers 3 and fastening elements 4 (with slot 5) and 6 (with locking protrusion 7). The gasket is made with protrusions 8 on the insulating part, separated from the rest of the gasket by lines of reduced rigidity (shown by the dotted line in Fig. 1). The fastening elements 4 and 6 are also separated from the gasket by lines of reduced stiffness, such as zigovkoy, and closed on the frontal parts.

In the grooves 9 of the stator core 10 there are coils of the first tier (phase) of the winding with slotted caps 11. The grooves 12 of the stator core are designed for stacking the coils of the next tier

Making the wrapped stator includes the following operations.

After laying the grooves 9 of the stator core 10 of the coil groups of the first Tier (phase) of the winding, press the insulating part 1 of the gasket against the inner 702

ne surface of the front part 2 of the coil group (Fig 2). The fastening elements 4 and 6 are also pressed against the surface of the frontal part 2 along the perimeter of its cross section.

Then the locking protrusions 7 of the elements 6 are bent, inserted into the slots 5 of the elements 4 and unbend, which provides a rigid attachment of the elements 4 and 6 (Fig. 3). The locking whiskers 3 are inserted between the lobo part 2 and the slotted slot 11 (Fig. 2), the bent protrusions 8 are placed on the surface of the front part 2 (Figs 2 and 3). In a similar way, all the frontal parts of the coil groups of the first russ winding are insulated, after which the next rus (phase) of the winding is laid in the slots 12.

The use of the invention improves the reliability of interphase insulation.

Claims (1)

Invention Formula The wrapped stator of an electric machine, including a multiphase coil winding and insulating interphase gaskets made of sheet material with fasteners mounted on the winding coils, is different because, in order to improve the interfacial insulation reliability by improving its fixing, the insulating interphase gaskets are installed on each phase coil group and are made with protrusions separated from the rest of the gasket by lines of reduced rigidity, fasteners are also separated from the prokol These lines are of reduced rigidity and closed at the frontal parts. V / i t GO .one shda Thebes.2 Fig.Z