JPH0353578Y2 - - Google Patents

Description

[Detailed description of the invention] (A) Technical field of the invention This invention is a field device for a rotating machine, particularly a field device for a rotating machine in which the shape of the insulating paper used when attaching the field winding to the pole core is devised. It is related to the device.

(B) Technical background and problems When installing the field winding of a rotating machine, it is necessary to insulate the yoke contact surface or pole contact surface of the winding. It is hoped that this will be done reliably.

Conventionally, to insulate the field winding of a rotating machine, an insulating paper with a double-sided center opening was placed on the inner surface of a cylindrical yoke, and this was inserted into the square-shaped field winding with interlayer insulation. It has a structure in which the center is double-folded from the top, and the double-sided opening part has an insulating paper inserted at a position rotated by 90 degrees from the above-mentioned insulating paper. Then, the mounting portion of the pole core was inserted into these and fixed to the cylindrical yoke (this point will be described later with reference to FIG. 1). Therefore, there was a problem in that two sheets of insulating paper were required to electrically insulate the field winding of the rotating machine from the yoke surface and the pole surface. In addition, two sheets of insulating paper had to be attached to each, making the assembly process time-consuming.

(C) Purpose and structure of the invention The invention consists of insulating the field winding of a rotating machine from the yoke surface and pole surface using a sheet of insulating paper;
In particular, the purpose is to facilitate assembly work by providing insulation on all four sides of the pole surface. Therefore, the field device for a rotating machine of the present invention has a field device for a rotating machine in which a field winding is attached to the inner surface of a cylindrical yoke of the rotating machine by a pole core. The field winding insulating paper has a rectangular part in the center into which a pole core mounting part can be inserted, and has a bottom that touches all sides of the rectangular part, and each of the sides separated folded pieces are formed with mutually penetrating notches, and each folded piece is double-opened by said base at right angles to all sides of said rectangular part and further has a top portion. The field winding is insulated from the pole core and the cylindrical yoke by bending the bent piece along the inner and upper surfaces of the field winding. It is a feature.

(D) Example of the invention Fig. 1 is an explanatory diagram of the insulation form of the field winding of a conventional rotating machine, Fig. 2 is an illustration of the insulation form of the field winding of the rotating machine according to the present invention, Figs. Figure 4 shows other embodiments of the insulating paper according to the present invention.

In the figure, 1 is a pole core, 2 and 4 are conventional insulating papers, 3 is a field winding, 5 is a yoke, 7, 7', and 7'' are insulating papers according to the present invention, and 8, 8', and 8'' are In FIG. 1, which shows a folded piece of insulating paper according to the present invention, the insulation of the conventional field winding 3 is as follows.
Place an insulating paper 4 having an insulating paper piece opened at right angles facing upwards, fit the rectangle-shaped field winding 3 with interlayer insulation into this, and then insert the insulating paper 4 and the insulating paper pieces opened at right angles downwards. This was done by inserting an insulating paper 2 having an insulating paper piece into the rotated position. Then, the protrusion 9 of the pole core 1 is inserted into the insulated field winding 3, the protrusion 9 is fixed to the yoke 5 with the screw 6, and the field winding 3 is
was attached to yoke 5. Therefore, the field winding 3
Two sheets of insulating paper were required to electrically insulate the yoke from the yoke and pole surfaces.

However, in the field device for a rotating machine according to the present invention, only one insulating paper 7 is required as shown in FIGS. 2A and 2C.

This will be explained below.

The insulating paper 7 according to the present invention has a rectangular opening into which the protrusion 9 of the pole core 1 can be inserted, as shown in FIG. It is configured by putting it in. Then, fold the bent piece 8 with each cut into a second
Fold it at right angles along the dashed line shown in Figure B. Place this on the yoke 5 as shown in Figure 2A,
Field winding 3 with interlayer insulation applied to this insulating paper 7
By fitting the bent piece 8 into contact with the inner surface of the field winding 3, the tip of the bent piece 8 is bent along the dotted line in the figure and comes into contact with the upper surface of the field winding 3. Ru. Then, the pole core 1 is fixed to the yoke 5 with a mounting screw 6. In this way, the lower surface of the field winding 3 is insulated from the yoke 5 by the mount of insulating paper 7, and the side and upper surfaces are insulated from the pole core 1 by the bent piece 8. complete insulation.

Further, if necessary, an insulating adhesive or the like is applied to the field winding 3 to close the gap between the bent pieces 8.

FIG. 3 shows another embodiment of the insulating paper 7' according to the present invention. In the illustrated case, insulation from the pole core 1 is provided by the bent piece 8'.

Note that the shape of the insulating paper 7 is not limited to that shown in FIG. 2B or FIG. 3, and may be of any shape as long as the field winding 3 can be insulated by the insulating paper.

FIG. 4 shows another embodiment of the insulating paper according to the present invention. In the illustrated case, a plurality of rectangular openings are formed on a single insulating paper 7'', and a bent piece 8'' is formed corresponding to each rectangular opening. The insulating paper 7'' shown in FIG. 4 is suitable for insulating, for example, two adjacent two of four field windings of a rotating machine with a single insulating paper 7''.

(E) Effects of the invention As explained above, according to the invention, the field winding of the rotating machine can be insulated with a single sheet of insulating paper, which has the effect of simplifying the structure. In particular, by adopting a configuration in which all sides of the pole are insulated, only one sheet of insulating paper is required, which simplifies the assembly work, improves yield, and eliminates the problem that occurs between the field winding and the yoke or pole core. It is convenient for pouring insulating adhesive etc. into the gap.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the insulation state of the field winding of a conventional rotating machine, Fig. 2 is an illustration of the insulation state of the field winding of the rotating machine according to the present invention, and Figs. 3 and 4 are respectively related to the present invention. Another example of such insulating paper will be shown. In the figure, 1 is a pole core, 3 is a field winding, 5 is a yoke, 7, 7', 7'' are insulating papers according to the present invention, 8,
8' and 8'' represent folded pieces of insulating paper according to the present invention.

Claims (1)

[Claims for Utility Model Registration] In a field device for a rotating machine in which a field winding is attached to the inner surface of a cylindrical yoke of a rotating machine by a pole core, a field winding insulating paper for insulating the field winding is provided. The field winding insulating paper has a rectangular part in the center into which the pole core mounting part can be inserted, and has a bottom that touches all sides of the rectangular part, and has mutually connected parts to each of the sides. separated folded pieces are formed with an indented cut, and each folded piece is double-opened by the base at right angles to all sides of the square part and further folded at the top at a right angle. A rotation device characterized in that the field winding is insulated from the pole core and the cylindrical yoke by bending the bent piece along the inner surface and the upper surface of the field winding. Machine's field device.