JPH0529254U - Compensation device for pole winding deadening of salient pole type rotating electric machine - Google Patents

Abstract

(57) [Abstract] [Purpose] Even with a small salient-pole type rotating electric machine, the withdrawal of the magnetic pole winding is compensated without adjusting the parts in a state where the rotor is assembled in the stator. [Structure] The magnetic pole core 1 is arranged so as to surround the base of the magnetic pole core 1.
An iron flange 9 fixed by welding, and a spring 5 that is housed in the groove 4 of the iron flange 9 and presses the lower insulating plate 8, and a preload is applied to the spring 5 to press the magnetic pole winding 2.
Compensates for dead pole windings in the assembled state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic pole winding dryage compensating device for compensating for the deadening of magnetic pole windings of a salient-pole type rotary electric machine.

[0002]

[Prior Art]

 Generally, in salient pole type rotating electrical machines, when the operation is performed for a long period of time, the insulation between the layers of the magnetic pole winding is so-called withered due to aging (insulation contraction of the insulation) and the winding shrinks, causing mechanical and electrical It is in an unfavorable state. Therefore, in order to prevent this, the magnetic pole winding is pressed with a predetermined force in consideration of the amount of contraction of the insulator.

FIG. 4, FIG. 5 and FIG. 6 are sectional views of a magnetic pole provided with this kind of magnetic pole winding dead compensation device according to a conventional example. In FIG. 4, the magnetic pole winding 2 is attached to the magnetic pole core 1, and the magnetic pole core 1 is further attached to the dovetail groove of the rotor core 3. At this time, high-quality insulating paper is used to insulate the magnetic pole winding 2, and at the time of manufacturing the magnetic pole, after the magnetic pole winding 2 is pressed with a force larger than that applied to the magnetic pole winding 2 during operation to form the magnetic pole, The magnetic pole was attached to the rotor core 3.

Further, in the example of FIG. 5, a groove 4 is provided on the outer peripheral surface of the rotor core 3 over the entire axial direction, and a block divided into a plurality of parts in the axial direction is embedded in the groove 4 to form each block. A spring accommodating recess is formed at the boundary of the spring, the spring 5 is accommodated in this recess, and the spring 5 pushes up the magnetic pole winding 2.

In the example shown in FIG. 6, a spring 5 fitted between a magnetic pole winding 2 wound around a magnetic pole core 1 and a rotor core 3 is a ring-shaped spring bearing arranged on a rectangular magnetic pole winding support plate. 23 and a spring receiver 22 with a guide arranged so as to face it. Reference numeral 21 is a support plate.

[0006]

[Problems to be solved by the device]

 In the above-described conventional structure, in the example of FIG. 4, when the magnetic pole is manufactured, the magnetic pole winding 2 is pressed by a force larger than that applied to the magnetic pole winding 2 during operation to form the magnetic pole, so that it takes time and effort to form the magnetic pole. In addition, in the example of FIGS. 5 and 6, since the spring 5 is attached at the stage where the magnetic pole is mounted on the rotor core 3, the spring 5 must be fitted in a narrow space between the magnetic pole and the rotor core 3. However, it took a long time to attach the spring 5, so that the assembly cost of the rotating electric machine also increased. Further, in another conventional magnetic pole magnetic pole winding defect compensating device, after the magnetic poles are assembled to the rotor core, the disc springs are arranged between the rotor core and the magnetic pole windings, and then the support portions of the disc springs are mounted. It was a method of adjusting and applying a necessary preload to the magnetic pole winding. In this method, since the space between the magnetic poles is narrow in a rotary electric machine with a small capacity, it was difficult to adjust the support portion of the disk spring when the rotor was assembled in the stator. However, recently, there is an increasing demand for removing a small number of magnetic poles from the rotor with the rotor assembled in the stator.

The present invention provides a magnetic pole winding deadness compensating device capable of compensating for the deadness of the magnetic pole winding without adjusting the parts even when the rotor is assembled in the stator even with a small salient pole type electric rotating machine. With the goal.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a stator provided with an armature winding, a rotor core, a salient pole-shaped magnetic pole core fixed to the rotor core, and a magnetic pole winding mounted on the magnetic pole core. In a salient pole type rotating electric machine including a rotor having a rotor, an iron fixed to the magnetic pole core by welding is arranged around the base of the magnetic pole core on the rotor core side of the lower insulating plate of the magnetic pole winding. A flange and a spring that is housed in the groove of the iron flange and presses the lower insulating plate are provided.

Further, in the magnetic pole winding defect compensating device for a salient pole type rotating electric machine according to claim 1, if a corrugated plate-shaped spring is used as the spring that is housed in the groove of the iron flange and presses the lower insulating plate. It is suitable.

[0010]

[Action]

 An iron flange, which is disposed on the rotor core side of the lower insulating plate of the magnetic pole winding so as to surround the base of the magnetic pole core and fixed by welding to the magnetic pole core, and the lower insulating plate which is housed in the groove of the iron flange. Is provided, and the magnetic pole winding is pushed up by the pressure given to the spring in advance, so that the magnetic pole winding can be compensated.

[0011]

【Example】

 1 is a sectional view of a magnetic pole provided with a magnetic pole winding dead compensation device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. 1 to 3, the same parts as those in FIGS. 4 and 5 are designated by the same reference numerals. In FIG. 1, the magnetic pole winding 1 is attached to the magnetic pole core 1, and the magnetic pole core 1 is further attached to the dovetail groove of the rotor core 3. The magnetic pole winding 2 is held by an upper insulating plate 7 and a lower insulating plate 8. On the rotor iron core side of the lower insulating plate 8 of the magnetic pole winding 2, an iron flange 9 is arranged which surrounds the base of the magnetic pole iron core 1 and is fixed to the magnetic pole iron core 1 by welding, and in the groove 4 of the iron flange 9. A spring 5 for accommodating and pressing the lower insulating plate 8 is provided. The groove 4 may be formed on the iron flange 9 over the entire length in the axial direction, or may be formed by the length for accommodating the spring 5. Since the corrugated plate-shaped spring 5 incorporated in the groove 4 of the iron flange 9 preliminarily applies a preload according to the dead amount of the interlayer insulation 6, an appropriate pressure can be constantly applied to the magnetic pole winding 2. .

In FIG. 2, the spring 5 is housed in a groove formed in the iron flange 9 in the axial direction. In FIG. 3, four springs 5 are arranged at symmetrical positions with respect to the magnetic pole core 1 of the iron flange 9 surrounding the magnetic pole core 1.

[0013]

[Effect of the device]

 This invention supports the lower side of the magnetic pole winding by a spring housed in a groove of an iron flange fixed to the magnetic pole iron core by welding, applies a predetermined preload to the spring, and integrates all springs by the iron flange. Therefore, it is not necessary to adjust the pressure of the spring, and even with a small salient-pole type rotating electric machine, it is possible to compensate for the winding of the magnetic pole winding with the rotor assembled in the stator. Further, since the magnetic pole can be removed from the rotor as it is while the rotor is assembled in the stator, the disassembling work is easy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a magnetic pole provided with a magnetic pole winding dead compensation device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view of a magnetic pole provided with a conventional magnetic pole winding compensator.

FIG. 5 is a sectional view of a magnetic pole provided with a magnetic pole winding compensating device according to another conventional example.

FIG. 6 is a sectional view of a magnetic pole provided with a magnetic pole winding compensating device according to another conventional example.

[Explanation of symbols]

 1 Magnetic pole core 2 Magnetic pole winding 3 Rotor core 4 Groove 5 Spring 7 Upper insulating plate 8 Lower insulating plate 9 Iron flange

Claims (2)

[Scope of utility model registration request] 1. A stator having an armature winding, a rotor core, a salient pole type magnetic pole core fixed to the rotor core, and a rotor having a magnetic pole winding attached to the magnetic pole core. In the salient-pole type rotating electric machine, the iron flange of the lower insulating plate of the magnetic pole winding, which is arranged around the base of the magnetic pole core and fixed to the magnetic pole core by welding, is disposed on the rotor core side of the magnetic pole winding. A pole winding deadness compensating device for a salient-pole type rotating electric machine, comprising: a spring housed in a groove to press the lower insulating plate. 2. The magnetic pole winding dead compensation device for a salient-pole type rotary electric machine according to claim 1, wherein the spring that is housed in the groove of the iron flange and presses the lower insulating plate is a corrugated plate-shaped spring. A feature of the present invention is a device for compensating for dead pole of a salient-pole rotating electric machine.