CN218040970U - Winding end fixing structure, generator rotor and generator - Google Patents

Abstract

The application provides a winding end fixed knot constructs, generator rotor and generator, and winding end fixed knot constructs and includes: the supporting ring is provided with a fixing groove; the end part line bar is arranged in the fixing groove; the slot wedge is arranged in the fixed slot; wherein, along the direction of depth of fixed slot, in slot wedge and the tip line stick imbeds the fixed slot in proper order, and the width of slot wedge is greater than the opening width of fixed slot to restrict the tip line stick through the slot wedge and break away from the fixed slot. This application is through setting up the fixed slot on the support ring to in imbedding the slot wedge tip line stick in the fixed slot in proper order, because the width of slot wedge is greater than the opening width of fixed slot, consequently can restrict the tip line stick in the fixed slot through the slot wedge, and then realize the fixed purpose of tip line stick, can not influence the heat dispersion of tip line stick, also can avoid simultaneously because the phenomenon of bolt construction increase rotating part risk.

Description

Winding end fixing structure, generator rotor and generator

Technical Field

The application relates to the technical field of generators, in particular to a winding end fixing structure, a generator rotor and a generator.

Background

At present, a generator motor of a pumped storage unit mainly comprises a rotor and a stator, wherein a winding is wound on the rotor, and the end part of the winding needs to be fixed so as to prevent the end part of the winding from being separated from the rotor due to centrifugal force.

Two schemes are mainly adopted for fixing the end part of a rotor winding in the prior art: (1) A binding belt is used for surrounding and fixing along the outer edge of the rotor winding (for example, japanese patent JP2529953B 2); (2) A screw rod is adopted to tension the end part of the winding (for example, chinese patent CN 112789890A); however, the winding structure of the binding belt is not beneficial to ventilation and heat dissipation of the winding end, and meanwhile, the structure of the tension bolt increases the installation period and increases the risk of rotating parts.

SUMMERY OF THE UTILITY MODEL

The application provides a winding head fixed knot constructs, generator rotor and generator, aims at solving present winding head fixed knot scheme and is unfavorable for the heat dissipation and the technical problem that the structure is complicated.

In a first aspect, the present application provides a winding head fixing structure, including:

the supporting ring is provided with a fixing groove;

the end part line bar is arranged in the fixing groove;

the slot wedge is arranged in the fixed slot;

wherein, along the depth direction of fixed slot, slot wedge and tip line stick imbed the fixed slot in proper order, and the width of slot wedge is greater than the opening width of fixed slot to restrict the tip line stick through the slot wedge and break away from the fixed slot.

In some embodiments, the fixing groove is formed in the circumferential outer edge of the support ring, and the depth direction of the fixing groove points to the circle center of the support ring.

In some embodiments, the fixing groove includes an inlet section, an expansion section, and a fixing section, which are sequentially arranged in a depth direction of the fixing groove;

the width of the inlet section is smaller than that of the expanding section and is larger than or equal to that of the fixing section;

wherein the end bar is mounted at the fixed segment and the slot wedge is at least partially located at the enlarged segment.

In some embodiments, the slot wedge includes an enlarged portion and an inlet portion;

the enlarged portion is engaged with the enlarged section and the inlet portion is engaged with the inlet section.

In some embodiments, the fixed section comprises a plurality of sub-fixed sections arranged at intervals, any sub-fixed section being in communication with the expanding section;

the end part line stick comprises a plurality of sub end part line sticks, the sub end part line sticks are arranged in the sub fixing sections, and the sub end part line sticks correspond to the sub fixing sections one to one.

In some embodiments, the end bar comprises a plurality of sub end bars;

a plurality of sub-end portion line bars are arranged in sequence along the depth direction of the fixing groove and are installed at the fixing section.

In some embodiments, adjacent sub-end stubs are provided with an insulating layer.

In some embodiments, the number of support rings is plural, the plural support rings being arranged at intervals along the extending direction of the end bar;

the fixing grooves on the plurality of support rings are arranged along the extending direction of the end wire rod, so that the same end wire rod is fixed in the corresponding fixing grooves of the plurality of support rings.

In a second aspect, the present application provides a generator rotor comprising a winding end fixing structure as described in the first aspect.

In a third aspect, the present application provides a generator comprising a generator rotor as described in the second aspect.

This application is through setting up the fixed slot on the support ring, and with slot wedge tip bar imbed in the fixed slot in proper order, because the width of slot wedge is greater than the opening width of fixed slot, consequently can restrict the tip bar in the fixed slot through the slot wedge, and then realize the fixed purpose of tip bar, because the fixed of tip bar only realizes through the slot wedge contact, do not surround whole support ring like ligature area circumference, consequently can not influence the heat dispersion of tip bar, simultaneously owing to need not the bolt locking, consequently also can avoid because the phenomenon of bolt structure increase rotatable parts risk.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of a winding end fixing structure provided in an embodiment of the present application;

FIG. 2 is an illustration of an end bar anchor provided in an embodiment of the present application;

FIG. 3 is a schematic view of a structure of a fixing groove on a support ring provided in an embodiment of the present application;

FIG. 4 is a schematic view of another structure of the fixing grooves on the support ring provided in the embodiment of the present application;

FIG. 5 is a cross-sectional schematic view of an end bar provided in an embodiment of the present application;

FIG. 6 is another schematic illustration of an end bar anchor provided in embodiments of the present application.

Wherein: 10 support ring, 11 fixation slot, 111 entrance segment, 112 enlargement segment, 113 fixation segment, 1131 sub fixation segment, 20 end bar, 21 sub end bar, 30 slot wedge, 31 enlargement segment, 32 entrance segment, 40 insulation layer;

d: the width of the slot wedge;

d: the opening width of the fixing groove.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the embodiments described are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The embodiments of the present application provide a winding overhang fixing structure, a generator rotor, and a generator, which will be described below in detail.

Referring first to fig. 1 and 2, fig. 1 shows a schematic view of a winding end fixing structure in an embodiment of the present application, and fig. 2 shows a schematic view of an end bar fixing part in an embodiment of the present application, wherein the winding end fixing structure includes:

the support ring 10 is provided with a fixing groove 11;

the end part line bar 20, the end part line bar 20 is installed in the fixing groove 11;

the slot wedge 30, the slot wedge 30 is installed in fixed slot 11;

wherein, along the depth direction of the fixing groove 11, the slot wedge 30 and the end portion bar 20 are sequentially embedded in the fixing groove 11, and the width D of the slot wedge 30 is greater than the opening width D of the fixing groove 11 to restrict the end portion bar 20 from escaping from the fixing groove 11 by the slot wedge 30.

In particular, the support ring 10 is used to secure the fixing of the end bar 20 to achieve the fixing of the end bar 20. Generally, the support ring 10 is an annular object, on which a plurality of fixation grooves 11 are annularly arranged on the support ring 10 in order to fix each end bar 20 circumferentially arranged of the rotor. In some embodiments of the present application, referring to fig. 3, fig. 3 shows a schematic structural diagram of the fixing grooves 11 on the support ring 10 in the embodiments of the present application, the fixing grooves 11 are formed on the circumferential outer edge of the support ring 10, and the depth direction of the fixing grooves 11 is directed to the circle center of the support ring 10, that is, the fixing grooves 11 are formed on the circumferential outer edge of the support ring 10 in the radial direction of the support ring 10, so that each end bar 20 arranged in the circumferential direction is embedded in the corresponding fixing groove 11.

In some embodiments of the present application, the support ring 10 is fixed to the main shaft of the rotor. In other embodiments of the present application, the support ring 10 may also be fixed to the yoke of the rotor. It will be appreciated that the support ring 10 may also be of other shapes, such as a regular polygon.

The end bars 20 refer to the portions of the two end heads of the generator rotor winding, the middle portion of the winding is fixed on the magnetic yoke or the magnetic pole, and the portion of the generator rotor winding extending out of the magnetic pole or the magnetic yoke is the end bar 20. In some embodiments of the present application, the end bar 20 is a rod-shaped object, such as a cylinder, a regular polygonal prism, or the like, so that the end bar 20 is embedded in the fixing groove 11. It will be appreciated that the end bar 20 may also have other shapes, such as an L-shape, an M-shape, etc.

The slot wedge 30 is adapted to be inserted into an opening of the fixing slot 11 so as to restrain the end bar 20 within the fixing slot 11. Wherein, along the depth direction of the fixing groove 11, the slot wedge 30 and the end portion bar 20 are sequentially embedded in the fixing groove 11, and the width D of the slot wedge 30 is greater than the opening width D of the fixing groove 11 to restrict the end portion bar 20 from escaping from the fixing groove 11 by the slot wedge 30.

It should be noted that the width D of the slot wedge 30 is greater than the opening width D of the fixing slot 11, and the width of the end bar 20 is generally less than or equal to the opening width D of the fixing slot 11, so that when the end bar 20 is fixed, the end bar 20 can be inserted into the fixing slot 11 from the opening of the fixing slot 11, and the slot wedge 30 can be inserted into the opening of the fixing slot 11 from above or below the fixing slot 11, thereby completing the fixing process of the end bar 20.

This application is through setting up fixed slot 11 on support ring 10, and imbed slot wedge 30 tip bar 20 in the fixed slot 11 in proper order, because the width D of slot wedge 30 is greater than the opening width D of fixed slot 11, consequently, can restrict tip bar 20 in fixed slot 11 through slot wedge 30, and then realize the fixed purpose of tip bar 20, because the fixed realization of only contacting through slot wedge 30 of tip bar 20, do not surround whole support ring 10 like ligature area circumference, consequently, can not influence the heat dispersion of tip bar 20, simultaneously owing to need not the bolt locking, consequently, also can avoid because the phenomenon of bolt construction increase rotating part risk.

As an example, referring to fig. 3, the fixing groove 11 includes an inlet section 111, an expansion section 112, and a fixing section 113, and the inlet section 111, the expansion section 112, and the fixing section 113 are sequentially arranged in a depth direction of the fixing groove 11; the width of the inlet section 111 is smaller than that of the expanding section 112 and is greater than or equal to that of the fixing section 113; wherein the end bar 20 is mounted at the fixed section 113 and the slot wedge 30 is at least partially located at the enlarged section 112.

It should be noted that, since the width of the inlet section 111 is greater than or equal to the width of the fixing section 113, the end bar 20 can be inserted into the fixing section 113 from the opening of the fixing slot 11 through the inlet section 111 and the expanding section 112 in sequence, and since the width of the inlet section 111 is smaller than the width of the expanding section 112, the slot wedge 30 is at least partially located at the expanding section 112, so that the slot wedge 30 is fixed at the expanding section 112 with a wider width, and cannot move towards the inlet section 111 or the fixing section 113, thereby ensuring the fixing function of the slot wedge 30 to the end bar 20.

It can be understood that the fixing groove 11 may also have other embodiments, for example, referring to fig. 4, fig. 4 shows another structural schematic diagram of the fixing groove 11 on the support ring 10 in the embodiment of the present application, a plurality of enlarged sections 112 are disposed between the inlet section 111 and the fixing end, and corresponding slot wedges 30 are respectively disposed in the plurality of enlarged sections 112, so as to achieve the purpose of multiple fixing and retaining of the end to the bar.

Further, in some embodiments of the present application, such as for embodiments in which the anchor slot 11 includes an inlet section 111, an enlarged section 112, and an anchor section 113, with continued reference to fig. 2 and 5, fig. 5 shows a schematic cross-sectional view of the end bar 20 in an embodiment of the present application, the slot wedge 30 includes an enlarged portion 31 and an inlet portion 32, the enlarged portion 31 engaging the enlarged section 112 of the anchor slot 11, the inlet portion 32 engaging the inlet section 111 of the anchor slot 11 such that the contact surface of the slot wedge 30 with the anchor slot 11 is increased, improving the stability of the slot wedge 30 within the anchor slot 11. It will be appreciated that the wedge 30 may also be provided with only the enlarged portion 31 and in contact with the enlarged section 112 of the holding groove 11.

In some embodiments of the present application, for example, for embodiments in which the retaining groove 11 includes an inlet section 111, an enlarged section 112, and a retaining section 113, with continued reference to fig. 6, fig. 6 shows another schematic view of an end bar retaining location in an embodiment of the present application, wherein the retaining section 113 includes a plurality of spaced apart sub-retaining sections 1131, any sub-retaining section 1131 being in communication with the enlarged section 112; the end bar 20 includes a plurality of sub end bars 21, the sub end bars 21 are installed in the sub fixing section 1131, and the sub end bars 21 correspond to the sub fixing sections 1131 one by one. Since the fixing section 113 has a plurality of sub fixing sections 1131, and different sub end bar 21 are respectively disposed in different sub fixing sections 1131, the same fixing groove 11 can fix a plurality of sub end bar 21 at the same time, and since the sub fixing sections 1131 are arranged at intervals, electrical isolation between different sub end bars 21 can be ensured while fixing a plurality of sub end bars 21.

Further, in some embodiments of the present application, referring to fig. 2, the end bar 20 includes a plurality of sub-end bars 21, and the plurality of sub-end bars 21 are sequentially arranged and installed at the fixing section 113 along the depth direction of the fixing groove 11, that is, the plurality of sub-end bars 21 are sequentially embedded in the fixing section 113, so as to fix the plurality of sub-end bars 21 at the same time, and avoid the phenomenon that the structural strength of the support ring 10 is affected by the plurality of fixing grooves 11.

It is to be understood that the above-described embodiment may be combined with other embodiments, for example, in an embodiment in which a plurality of sub end bar 21 are sequentially arranged and installed at the fixing section 113 in the depth direction of the fixing groove 11, and in an embodiment in which the sub end bar 21 is installed in the sub fixing section 1131, and the sub end bar 21 and the sub fixing section 1131 correspond to each other one by one, that is, in the same sub fixing section 1131, a plurality of sub end bar 21 are also sequentially arranged and installed in the depth direction of the fixing groove 11.

Further, in some embodiments of the present application, for example, for embodiments in which a plurality of sub end bars 21 are sequentially arranged and mounted at the fixing section 113 in the depth direction of the fixing groove 11, adjacent sub end bars 21 are provided with an insulating layer 40 to ensure electrical insulation between adjacent sub end bars 21. Illustratively, the insulating layer 40 may be rubber, basalt fiber cloth, glass fiber cloth, or the like.

In some embodiments of the present application, referring to fig. 1, wherein the number of the support rings 10 is plural, the plural support rings 10 are arranged at intervals along the extending direction of the end bar 20, and the fixing grooves 11 on the plural support rings 10 are arranged along the extending direction of the end bar 20, so that the same end bar 20 is fixed in the fixing grooves 11 corresponding to the plural support rings 10, that is, for the same end bar 20, the same end bar 20 is fixed in the fixing grooves 11 of the plural support rings 10 at the same time, and thus the end bar 20 is fixed from plural places, which is beneficial to improving the stability of the end bar 20.

It is to be noted that the above-mentioned contents about the winding end fixing structure are intended to clearly illustrate the embodiment verification process of the present application, and those skilled in the art can make equivalent modified designs under the guidance of the present application, for example, the channel cross-sectional areas of the inlet section 111, the enlarged section 112 and the fixing section 113 are kept constant along the depth direction of the fixing groove 11, that is, the inlet section 111, the enlarged section 112 and the fixing section 113 are regular channels, except that the channel widths of the inlet section 111, the enlarged section 112 and the fixing section 113 are different.

Further, in order to better implement the winding head fixing structure in the embodiment of the present application, on the basis of the winding head fixing structure, the present application provides a generator rotor, where the generator rotor includes the winding head fixing structure in any one of the embodiments described above, and because the generator rotor in the embodiment of the present application includes the winding head fixing structure in the embodiment described above, the generator rotor has all beneficial effects of the winding head fixing structure in the embodiment described above, and details are not repeated here.

Further, in order to better implement the generator rotor in the embodiment of the present application, on the basis of the generator rotor, the present application provides a generator including the generator rotor in any one of the embodiments described above, and since the generator in the embodiment of the present application includes the winding end fixing structure in the embodiment described above, the generator has all the beneficial effects of the winding end fixing structure in the embodiment described above, and details are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered as illustrative only and not limiting of the application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such alterations, modifications, and improvements are intended to be suggested herein and are intended to be within the spirit and scope of the exemplary embodiments of this application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Where numerals describing the number of components, attributes or the like are used in some embodiments, it is to be understood that such numerals used in the description of the embodiments are modified in some instances by the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit-preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

For each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, the entire contents of which are hereby incorporated by reference into this application, except for application history documents that are inconsistent with or conflict with the contents of this application, and except for documents that are currently or later become incorporated into this application as though fully set forth in the claims below. It is to be understood that the descriptions, definitions and/or uses of terms in the attached materials of this application shall control if they are inconsistent or inconsistent with the statements and/or uses of this application.

The winding head fixing structure, the generator rotor and the generator provided by the embodiment of the present invention are introduced in detail, and a specific example is applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be understood as a limitation to the present invention.

Claims (10)

1. A winding end fixing structure characterized by comprising:

the supporting ring is provided with a fixing groove;

an end bar mounted within the securing slot;

the slot wedge is installed in the fixing slot;

wherein the slot wedge and the end portion bar are sequentially embedded into the fixing groove along a depth direction of the fixing groove, and a width of the slot wedge is greater than an opening width of the fixing groove to restrict the end portion bar from being separated from the fixing groove by the slot wedge.

2. The winding end fixing structure according to claim 1, wherein the fixing grooves are formed in a circumferential outer edge of the support ring, and a depth direction of the fixing grooves is directed toward a center of the support ring.

3. The winding end fixing structure according to claim 1, wherein the fixing groove includes an entrance section, an enlarged section, and a fixing section, the entrance section, the enlarged section, and the fixing section being arranged in order in a depth direction of the fixing groove;

the width of the inlet section is smaller than that of the expanding section and is larger than or equal to that of the fixing section;

wherein the end bar is mounted at the fixed section and the slot wedge is at least partially located at the enlarged section.

4. The winding-end fixing structure according to claim 3, wherein the slot wedge includes an enlarged portion and an entrance portion;

the enlarged portion cooperates with the enlarged section and the inlet portion cooperates with the inlet section.

5. The winding-end fixing structure according to claim 3, wherein the fixing section includes a plurality of sub-fixing sections arranged at intervals, any one of the sub-fixing sections communicating with the enlarged section;

the end part line bars comprise a plurality of sub end part line bars, the sub end part line bars are arranged in the sub fixing sections, and the sub end part line bars correspond to the sub fixing sections one to one.

6. The winding end fixing structure according to claim 3, wherein the end bar includes a plurality of sub end bars;

the plurality of sub-end part line bars are sequentially arranged and installed at the fixed section along the depth direction of the fixed groove.

7. The winding end fixing structure according to claim 6, wherein adjacent ones of the sub-end bars are provided with an insulating layer.

8. The winding end fixing structure according to any one of claims 1 to 7, wherein the number of the support rings is plural, and plural support rings are arranged at intervals in an extending direction of the end bar;

the securing slots on a plurality of the support rings are arranged in the direction of extension of the end bar so that the same end bar is secured in the securing slots corresponding to a plurality of the support rings.

9. A generator rotor, characterized by comprising the winding end fixing structure according to any one of claims 1 to 8.

10. A generator comprising a generator rotor according to claim 9.

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