JPS589536A - Rotary machine with salient-pole rotor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a magnetic path having a hollow cylindrical porcelain body is fixed to a yoke 11 by a thin body bolt inserted in the center of the magnetic path. This relates to a salient pole rotor in which the rotor is located on the inner periphery of the yoke ring. Such a rotary machine is known from German Federal License Dlinie 082605539.

Such rotary machines with eight cylindrical poles are frequently used in diesel generators which are therefore exposed to high centrifugal forces. In known cylindrical magnetic poles, only the magnetic pole sides are solid.
lThe large-bodied narrow bolt placed in the center is inserted, and the bolt head is fitted into a hole made on the surface of the pole body that contacts the magnetic pole piece, where it is welded to the magnetic pole body.◎The magnetic pole piece is 1 stator 'NF#! so that the magnetic flux is uniformly distributed over the entire effective surface inside the lung. It has a rectangular bottom surface corresponding to the I iron core. It is composed of tXX layers of magnetic pole pieces, and is in R contact with the magnetic pole body via an end plate and a head. The production of these magnetic poles is expensive and requires careful attention to withstand centrifugal force. 'No.'

The purpose of this invention is to facilitate the manufacture of cylindrical magnetic poles.

This object is based on the present invention in a rotary machine of the head type, in which the pole piece is formed integrally with the pole body in a cylindrical shape, and in the assembled state the pole piece is located in the pole gap.
! A small pole center JJ is placed on each of the two opposing edges that are in contact with I.
Ic vs. 1. and one chamfered portion running parallel to each other, and the head of the narrow body port is fitted into a countersunk hole provided in the upper part of the magnetic pole piece and welded. Achieved by K. Therefore a? The whole pole is made up of one member, the insect cage body and the pole piece, which are cylindrical and fishy. The outer surface and the center hole for inserting the thin body port can be easily manufactured by lathe finishing. The chamfers provided on the two opposing edges of the pole pieces gradually increase to provide a desirable pole gap from the viewpoint of magnetic flux distribution. The shape of FI is approximated. The lack of cross-sectional area at the corners in the case of a cylindrical pole piece compared to a pole piece with a rectangular base can be compensated for by slightly increasing the excitation current accordingly.

The head of the thin body bolt is fitted into the counterbore hole provided on the top surface of the magnetic pole piece, so it can be inserted radially from the outside to the inside. In addition to being easy to work with, the length of the thin body bolt can be made relatively long.

It is best to lathe the magnetic pole pieces concentrically with the rotor shaft. This can be done easily after the magnetic poles are attached to the rotor. This work is done after fitting the yoke ring with the magnetic pole attached to the shaft.
Since the finishing is done on a lathe, the finish is extremely accurate.

If it is desired that the tapping gap be exactly sinusoidal, the pole piece can be machined using a dog wheel or an RC shaper.

Furthermore, it is advantageous to cut the length of the pole pieces perpendicular to the rotor axis according to the length of the stator laminated core.Next, the present invention will be described in detail based on an illustrated embodiment.

FIG. 1 is an axial cross-sectional view of a cylindrical magnetic pole according to an embodiment of the present invention attached to a yoke ring, FIG. 2 is an axis-perpendicular cross-sectional view of the cylindrical magnetic pole shown in FIG. FIG. 3 is a plan view of the cylindrical magnetic pole shown in the figure.

In Figures 1 to 3, examples of salient pole rotating machines include high-speed 1l
A plurality of cylindrical magnetic poles 3 are arranged at uniform intervals on a flat mounting surface 2 on the circumference of a yoke ring I formed in the shape of a hook of an IWIJ machine. In this cylindrical pole 3, the pole piece 4 is made integral with the solid pole body 5 (11). Therefore, the object in question is a cylindrical solid member whose outer shape is manufactured by lathe finishing. This cylindrical magnetic pole 3 supports an excitation winding 6 used for excitation of the salient pole rotational speed.

In order to provide the desired 9-gap tapered A7 increasing portion in the WB pole piece adjacent to the 8-gap gap 7, the pole piece 4 has a n
The cylindrical pole pieces 4 and the pole body are each provided with one chamfer 8 running parallel to each other for fixation to the yoke ring 1. The cylinder ffJI inserted into the circular hole 11 of the circular hole 10 passing through the part 5 and the yoke ring connected thereto.
Bolt 9 is used.

The threaded head 12 of the thin barrel bolt 9 is inserted into a counterbore 13 having the same diameter as the threaded head 12 and is welded there to the pole piece 4 via a weld seam 14.

After attaching the excitation winding 6 and the narrow body port 9 to the cylindrical magnetic pole 3, insert the narrow body port 9 into the circular hole 11 of the yoke ring 1, and connect the threaded portion to the inner circumference 15 of the yoke ring 1. Once it protrudes beyond that point, fix it with G16.

Thereby, the cylindrical magnetic pole 3 is mounted tightly on the mounting surface 2 of the yoke ring l. Due to this close attachment, no air gap is created between the magnetic pole body 5 and the yoke ring 1, so after fixing the magnetic pole to the yoke ring 1 with 0 cylindrical magnetic poles unchanged, the magnetic pole is fixed as shown in Fig. 2. As shown by the broken line 17, the upper surface (6) of the pole piece 4 facing the air gap is finally processed by lathe finishing K concentrically with the rotor axis. Therefore, one weld seam 14 must be deep enough to obtain a smooth tc coating surface for the transmission of magnetic flux.

Depending on the length of the stator laminated core (not shown), two cut-in portions 18 perpendicular to the rotor axis can be provided in the ground pole piece 4 of the cylindrical magnetic pole 3.

[Brief explanation of the drawing]

Fig. 1 & Dark blue: An axial cross-sectional view of a cylindrical magnetic pole showing one embodiment of the present invention attached to an iron ring, Fig. 2 is a right-angle cross-sectional view of the circle ff1 type magnetic pole in Fig. 1, Figure 3 is a plan view of the cylindrical magnetic pole of Figure 1. In the drawings, 1 is the joint 111 ring, 3 (engineering ET4 fa
Overall 4 is a male pole piece, 5 is a ground pole body, 7 is a magnetic pole gap, 8 is a chamfered part, 9 is a thin body pole), 12fT head, 13 is a counterbore hole, 14 is a welded joint, 15 is a joint Inner circumference of iron ring, 1
6 lotus, ), 18 & machining part, 〇(7) IG 1 IG 2

Claims (1)

[Scope of Claims] 1) A magnetic pole having a solid cylindrical magnetic pole side is fixed to a yoke ring by a narrow-body bolt inserted into the center thereof, and the nut of the narrow-body bolt is inserted into the yoke ring. In a rotating machine having a salient pole rotor disposed around the circumference, a magnetic pole piece is formed integrally with the magnetic pole side part in a cylindrical shape, and when the magnetic pole piece is stacked, two opposing adjacent pole pieces adjacent to the magnetic pole gap are formed. Each edge is provided with a single face portion running parallel to and parallel to the pole center line, and the head of the thin barrel bolt is inserted into a countersunk hole provided on the upper surface of the pole piece. A rotating machine having a salient pole rotor that is fitted and welded. 2. A rotating machine according to claim 1, in which the magnetic pole pieces are lathed concentrically with the rotor axis. 3) In the rotating machine according to claim 1, an edge of the magnetic pole piece that is orthogonal to the rotor thin part of the stator vIM core is finished. A rotating machine having a salient pole rotor characterized by being cut according to its length.