CN216390639U

CN216390639U - Combined excitation stator

Info

Publication number: CN216390639U
Application number: CN202122579898.0U
Authority: CN
Inventors: 苏木金; 吴艺辉
Original assignee: Xiamen Huagong Intelligent Equipment Co ltd
Current assignee: Xiamen Huagong Intelligent Equipment Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-26
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a combined excitation stator, which comprises a stator core, an upper insulating piece, a lower insulating piece and a plurality of windings, wherein the upper insulating piece and the lower insulating piece are respectively arranged at two ends of the stator core; the stator core is in an annular cylindrical outline, and a plurality of winding strips are arranged on the inner side wall of the stator core; the winding strip is provided with covering fins extending towards two sides; a slot wedge is formed between the adjacent winding strips; the upper insulating part and the lower insulating part have the same structure, and are respectively provided with a plurality of upper insulating grooves and lower insulating grooves which correspond to the slot wedges one by one; each group of windings are sequentially wound on an upper insulating groove, a slot wedge and a lower insulating groove, and each slot wedge is provided with an insulating paper sleeve. The mode that the upper insulating part is contacted with the lower insulating part and the stator core is adopted, and the slot wedge matched with the stator core is provided with the insulating paper sleeve, so that good insulation is realized, the possibility of electric leakage of a winding is effectively prevented, and the motor stator has the advantages of low cost and simplicity in operation.

Description

Combined excitation stator

Technical Field

The utility model relates to the technical field of motor production, in particular to a combined excitation stator.

Background

In the prior art, the winding of the stator of the existing excitation motor is the heart, which is the core of converting electric energy. Reliable winding insulation is the basic guarantee for the long-term safe operation of the stator core. The insulating performance of the motor is directly influenced, and the technical performance and the economic index of the transformer are greatly influenced due to the large proportion of insulation. The existing insulation mode of the excitation stator has the problems of high cost and complex processing steps.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

For the above reasons, the applicant proposes a combined excitation stator, aiming to solve the above problems.

In order to meet the above requirements, an object of the present invention is to provide a combined excitation stator, which includes a stator core, an upper insulator, a lower insulator, and a plurality of windings sequentially wound around the upper insulator, the stator core, and the lower insulator, wherein the upper insulator and the lower insulator are respectively mounted at two ends of the stator core;

the stator core is in an annular cylindrical outline, and a plurality of winding strips are arranged on the inner side wall of the stator core; one surface of the winding strip, which faces the central line of the stator core, is provided with covering fins extending towards two sides; a slot wedge is formed between the adjacent winding strips;

the upper insulating piece and the lower insulating piece are of the same structure, and are respectively provided with a plurality of upper insulating grooves and lower insulating grooves which are in one-to-one correspondence with the slot wedges;

and each group of windings are sequentially wound on the upper insulation groove, the slot wedges and the lower insulation groove, and each slot wedge is provided with an insulation paper sleeve.

In some examples of the present invention, the upper insulating member includes a clamping table contacting the winding bar, and an inner baffle and an outer baffle respectively disposed at inner and outer sides of the clamping table;

the inner baffle, the clamping table and the outer baffle form the upper insulating groove.

In some examples of the utility model, the width of the inner barrier is coincident with the cover flap, and the catch completely coincides with the wrap.

In some examples of the present invention, the outer sidewall of the stator core is provided with a plurality of cutting planes.

In some examples of the utility model, the stator core, the winding bar, and the cover tabs are a unitary structure.

In some examples of the present invention, the cover wing has a circular arc shape, and a plurality of the cover wings form a circular cavity.

In some examples of the utility model, the winding is wound from copper wire.

In some examples of the utility model, the inner side wall of the winding strip is arc-shaped.

In some examples of the utility model, the upper insulator is a plastic part.

In some examples of the utility model, the lower insulator is a plastic member.

Compared with the prior art, the utility model has the beneficial effects that: the mode that the upper insulating part is contacted with the lower insulating part and the stator core is adopted, and the slot wedge matched with the stator core is provided with the insulating paper sleeve, so that good insulation is realized, the possibility of electric leakage of a winding is effectively prevented, and the motor stator has the advantages of low cost and simplicity in operation.

The utility model is further described below with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of a combined excitation stator according to an embodiment of the present invention;

FIG. 2 is a left side schematic view of the excitation stator structure of FIG. 1;

FIG. 3 is a schematic diagram of a stator core configuration of the excitation stator configuration of FIG. 1;

FIG. 4 is a schematic view of the upper insulator structure of the excitation stator structure of FIG. 1;

fig. 5 is a schematic view of an insulating paper sleeve structure of the excitation stator structure of fig. 1.

Reference numerals

100 excitation stator 101 stator core

102 insulating part 1021 clamping table

1022 inner barrier 1023 outer barrier

Lower insulating part of 1024 clamping protrusions 103

104 wrap strip 105 covering the tab

106 slot wedge 107 upper insulation slot

108 cutting plane of insulating paper sleeve 109

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

As shown in fig. 1 to 5, the present application provides a combined excitation stator 100, which includes a stator core 101, an upper insulator 102 and a lower insulator 103 respectively mounted at two ends of the stator core 101, and a plurality of windings (not shown in the drawings) sequentially wound around the upper insulator 102, the stator core 101, and the lower insulator 103; the stator core 101 is in an annular cylindrical outline, and a plurality of winding bars 104 are arranged on the inner side wall of the stator core 101; one surface of the winding bar 104 facing the central line of the stator core 101 is provided with covering fins 105 extending towards two sides; a slot wedge 106 is formed between the adjacent winding bars 104; the upper insulating piece 102 and the lower insulating piece 103 have the same structure, and the upper insulating piece 102 and the lower insulating piece 103 are respectively provided with a plurality of upper insulating grooves 107 and lower insulating grooves (not marked in the figure, and only the upper insulating groove 107 is taken as an example) which correspond to the slot wedges 106 one by one; each group of windings are sequentially wound in an upper insulation groove 107, a slot wedge 106 and a lower insulation groove, and each slot wedge 106 is provided with an insulation paper sleeve 108.

Therefore, the insulating paper sleeve 108 is fixed in the slot wedge 106, and the insulating paper sleeve 108 is prevented from being driven in the stator manufacturing process. The winding is wound on the winding bar 104 covered with an insulating paper sleeve 108. The winding is formed by winding copper wires. Therefore, the conductivity is ensured, and the cost is lower. The upper and

lower insulators

102 and 103 can effectively isolate the copper wire winding from the stator core 101, and prevent the winding from being conducted with the stator core.

In one embodiment, the upper insulator 102 includes a clamp platform 1021 contacting the winding strip 104, an inner barrier 1022 and an outer barrier 1023 respectively disposed on the inner and outer sides of the clamp platform 1021; the inner barrier 1022, the chuck 1021, and the outer barrier 1023 form an upper insulation slot 107. Wherein, outer baffle 1023 upper end is equipped with the protruding 1024 of a plurality of screens for with other part joint, and then make the excitation stator 100 of this application accomplish the installation.

In one embodiment, the inner flap 1022 has a width corresponding to the width of the cover tab 105, and the platform 1021 completely overlaps the winding bar 104, so that the windings are smoothly installed without protrusions or depressions.

In an embodiment, be equipped with a plurality of cutting planes 109 on stator core 101's the lateral wall, stator core 101, wind strip 104 and cover fin 105 structure as an organic whole to in manufacturing, cover fin 105 and be arc, a plurality of cover fin 105 constitute circular cavity, thereby form the butt effect to the winding, prevent the winding roll-off, be favorable to the stability of guarantee winding work.

In one embodiment, the winding is formed by winding a copper wire, the inner sidewall of the winding strip 104 is arc-shaped, and the upper insulating member and the lower insulating member are both plastic members.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A combined excitation stator is characterized by comprising a stator core, an upper insulating part, a lower insulating part and a plurality of windings, wherein the upper insulating part and the lower insulating part are respectively arranged at two ends of the stator core;

2. The combined excitation stator according to claim 1, wherein the upper insulator includes a clamping table contacting the winding bar, and an inner baffle and an outer baffle respectively disposed at inner and outer sides of the clamping table;

3. The excitation stator of claim 2 wherein said inner stop has a width corresponding to said cover tab, said catch completely coinciding with said winding bar.

4. The combined excitation stator according to claim 1, wherein a plurality of cutting planes are provided on an outer side wall of the stator core.

5. The excitation stator of claim 1 wherein said stator core, said winding bar and said cover tabs are of unitary construction.

6. The excitation stator of claim 1, wherein the cover fin is circular arc-shaped, and a plurality of the cover fins form a circular cavity.

7. The combined excitation stator of claim 1 wherein said windings are wound from copper wire.

8. The combined excitation stator according to claim 1, wherein the inner side wall of the winding bar is circular arc-shaped.

9. The excitation stator of claim 1 wherein said upper insulator is a plastic component.

10. The excitation stator of claim 1 wherein said lower insulator is a plastic part.