CN219135076U

CN219135076U - Stator and rotor fixing device of wind driven generator

Info

Publication number: CN219135076U
Application number: CN202320200534.3U
Authority: CN
Inventors: 饶凡; 龚磊; 汪文涛
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-06-06
Anticipated expiration: 2033-01-31

Abstract

The utility model provides a stator and rotor fixing device of a wind driven generator, which comprises: a first fixing member interposed between a rotor and a stator of the stator and rotor in an axial direction of the stator and rotor, a first end of the rotor and a first end of the stator being fixed to the first fixing member, respectively; a plurality of second fixing members disposed between the rotor and the stator at predetermined intervals along a circumferential direction of the stator and rotor, one end of each second fixing member being fixed to a second end of the rotor, and the other end of each second fixing member being fixed to a portion of the stator adjacent to the second end of the stator; and a support frame fixed to the second end of the stator for supporting the stator. The stator and rotor fixing device of the wind driven generator can transport the stator and the rotor together, so that the transport efficiency is improved, and the transport cost is reduced.

Description

Stator and rotor fixing device of wind driven generator

Technical Field

The present utility model relates to a stator and rotor fixing device for a wind driven generator, and more particularly, to a stator and rotor fixing device capable of transporting a stator and a rotor of a wind driven generator together.

Background

The urgent need of new energy makes wind power develop rapidly. High-power wind power generators (especially medium-speed permanent magnet wind power generators) are accepted by the market, and are increasingly widely applied to wind power due to the advantages of cost and reliability of the medium-speed permanent magnet wind power generators. At present, when a wind power generator (when assembled with a gearbox, a bearing of the wind power generator is shared by the gearbox, when a stator and a rotor of the wind power generator are assembled, the rotor of the stator and the rotor are required to be matched with the gearbox, and then a stator of the stator and the rotor is sleeved in, and for part of generator factories, the whole assembly condition is not provided, the wind power generator is required to be respectively sent to the final assembly factories for assembly, so that the whole wind power generator cannot be assembled with the gearbox.

In the above assembly mode, the generator plant needs to transport the stator, the rotor and the accessories thereof to the general assembly plant separately, which not only increases the transportation cost, but also increases the risk of the shape of the wind power generator being deformed by extrusion during transportation.

Disclosure of Invention

The stator and rotor fixing device of the wind driven generator is provided to solve the technical problems that the stator and the rotor of the existing wind driven generator cannot be transported together and are easy to deform due to vibration in the transportation process.

According to an aspect of the present utility model, there is provided a stator and rotor fixing device of a wind power generator, the stator and rotor fixing device of the wind power generator including: a first fixing member interposed between a rotor and a stator of the stator and rotor in an axial direction of the stator and rotor, a first end of the rotor and a first end of the stator being fixed to the first fixing member, respectively; a plurality of second fixing members disposed between the rotor and the stator at predetermined intervals along a circumferential direction of the stator and rotor, one end of each second fixing member being fixed to a second end of the rotor, and the other end of each second fixing member being fixed to a portion of the stator adjacent to the second end of the stator; and a support frame fixed to the second end of the stator for supporting the stator.

According to the present utility model, the first fixing member may include a plurality of connection members disposed at predetermined intervals along a circumferential direction of the stator and rotor, each connection member including a first horizontal portion fixed to the first end of the stator, a second horizontal portion fixed to the first end of the rotor, and a vertical portion connecting the first horizontal portion and the second horizontal portion.

According to the present utility model, the first fixing member may further include a fixing ring to which the plurality of connection members are fixed.

According to the utility model, the first fixing member may further comprise a plurality of division bars located in an air gap between the rotor and the stator, each division bar corresponding to a d-axis of the magnetic steel of the wind turbine, one end of each division bar being fixed to the fixing ring, the number of the division bars being 2P-3, wherein P is a pole pair number of the wind turbine.

According to the present utility model, the plurality of connection members may be three, arranged at an angular interval of 120 degrees from each other, or six, arranged at an angular interval of 60 degrees from each other.

According to the utility model, the rotor may be located inside the stator.

According to the present utility model, the stator may have a vent hole, and each of the second fixing members includes a vertical portion fixed to an outer surface of the rotor and a horizontal portion fixed to a wall of the vent hole through the vent hole.

According to the present utility model, the support frame may have a Y-shape, and three ends of the support frame are respectively fixed to the second ends of the stators.

According to the present utility model, the three ends of the supporting frame may be respectively formed with protrusions, each of which is inserted into a hole formed on a lower surface of the second end of the stator.

According to the present utility model, the rotor is located inside the stator, the outer diameter of the fixing ring is smaller than the inner diameter of the stator, and each of the connection members may be fixed to the fixing ring by a portion of the first horizontal portion adjacent to the vertical portion or a portion of the second horizontal portion adjacent to the vertical portion.

The stator and rotor fixing device of the wind driven generator can transport the stator and the rotor together, so that the transport efficiency is improved, and the transport cost is reduced. In addition, the stator and the rotor are firmly fixed to each other during transportation of the stator and the rotor, thereby avoiding deformation or damage of the stator and the rotor which may be caused by vibration during transportation. In addition, according to the stator and rotor fixing device of a wind power generator of the present utility model, it is possible to easily assemble with a gearbox after being transported to a destination, thereby facilitating assembly of the wind power generator.

Drawings

The foregoing and/or other objects and advantages of the utility model will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 illustrates a schematic view of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model, in which a stator is not illustrated.

Fig. 2 illustrates a schematic view of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model.

Fig. 3 illustrates a schematic view of a support frame of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model.

Fig. 4 illustrates a schematic view of a plurality of second fixing members of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model.

Fig. 5 illustrates a schematic view of a first fixing member of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model.

Detailed Description

Exemplary embodiments according to the present utility model will now be described more fully with reference to the accompanying drawings. However, embodiments of the present utility model should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

Fig. 1 shows a schematic view of a stator-rotor fixture of a wind power generator according to an exemplary embodiment of the present utility model, in which a stator is not shown; FIG. 2 illustrates a schematic view of a stator and rotor securing device of a wind turbine according to an exemplary embodiment of the present utility model; FIG. 3 illustrates a schematic view of a support frame of a stator and rotor fixture of a wind turbine according to an exemplary embodiment of the present utility model; FIG. 4 illustrates a schematic view of a plurality of second fixing members of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model; fig. 5 illustrates a schematic view of a first fixing member of a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model.

As shown in fig. 1 to 5, a stator and rotor fixing device of a wind power generator according to an exemplary embodiment of the present utility model may include: a first fixing member 1 interposed between a rotor 4 and a stator 5 of the stator and the rotor in an axial direction of the stator and the rotor, a first end of the rotor 4 and a first end of the stator 5 being fixed to the first fixing member 1, respectively; a plurality of second fixing members 2 disposed between the rotor 4 and the stator 5 at predetermined intervals along a circumferential direction of the stator and the rotor, one end of each second fixing member 2 being fixed to a second end of the rotor 4, the other end of each second fixing member 2 being fixed to a portion of the stator 5 adjacent to the second end of the stator 5; a support bracket 3 fixed to a second end of the stator 5 for supporting the stator 5.

As shown in fig. 2, the first end of the rotor 4 and the first end of the stator 5 refer to the upper ends of the rotor 4 and the stator 5, and correspondingly, the second end of the rotor 4 and the second end of the stator 5 refer to the lower ends of the rotor 4 and the stator 5. But the present utility model is not limited thereto.

According to the present utility model, the stator and rotor structure of the wind power generator may be an outer stator and inner rotor structure, i.e., the rotor 4 is located inside the stator 5, but the present utility model is not limited thereto, and the stator and rotor structure of the wind power generator may be an inner stator and outer rotor structure. The following description will be made taking the outer stator inner rotor structure as an example.

According to the present utility model, the first fixing member 1 may include a plurality of connection members 11, the plurality of connection members 11 being disposed at predetermined intervals along a circumferential direction of the stator and the rotor, each connection member 11 including a first horizontal portion fixed to a first end of the stator 5, a second horizontal portion fixed to a first end of the rotor 4, and a vertical portion connecting the first horizontal portion and the second horizontal portion.

According to the present utility model, the plurality of the connection members 11 may be three, in which case, the three connection members 11 are arranged at an angular interval of 120 degrees therebetween; alternatively, the plurality of connection members 11 may be six, and the six connection members 11 may be arranged at an angular interval of 60 degrees therebetween. In the present utility model, the number of the connectors is not limited thereto, as long as the ends of the rotor 4 and the corresponding ends of the stator 5 can be firmly fixed to each other.

Alternatively, the connection 11 may be formed of stainless steel, such as 304, primarily for securing the stator 5 and the rotor 4 such that no radial and axial relative displacement between the stator 5 and the rotor 4 occurs.

According to the present utility model, the first fixing member 1 may further include a fixing ring 12, an outer diameter of the fixing ring 12 being smaller than an inner diameter of the stator 5, and the plurality of connection members 11 being fixed to the fixing ring 12. Alternatively, each of the connection members 11 is fixed to the fixing ring 12 by a portion of the first horizontal portion adjacent to the vertical portion or a portion of the second horizontal portion adjacent to the vertical portion, and the present utility model is not limited thereto and the connection member 11 may be fixed to the fixing ring 12 by the vertical portion.

Alternatively, the retainer ring 12 may be formed of high carbon steel or stainless steel for reinforcing the connection member 11.

According to the utility model, the first fixing member 1 may further comprise a plurality of division bars 13, the plurality of division bars being located in the air gap between the rotor 4 and the stator 5, each division bar 13 corresponding to the d-axis of the magnetic steel of the wind turbine, one end of each division bar 13 being fixed to the fixing ring 12, the number of the plurality of division bars 13 being 2P-3, wherein P is the pole pair number of the wind turbine.

As shown in fig. 5, each division bar 13 may include a fixing portion and an extension portion extending from the fixing portion, wherein the fixing portion and the extension portion may be perpendicular to each other. Each spacer bar 13 is fixed to the fixing ring 12 by a fixing portion, the extension of each spacer bar 13 being located in the air gap between the rotor 4 and the stator 5.

Alternatively, the spacer 13 may be a copper spacer. The 2P-3 division bars 13 can be uniformly arranged in the air gap between the stator 5 and the rotor 4, and each division bar 13 is arranged at the d-axis position of each pole of magnetic steel. The thickness of the parting bead 13 may be 3mm-6mm, and the specific thickness may be determined according to the length of the air gap of the wind power generator.

As shown in fig. 1, 2 and 5, according to the present utility model, the stator 5 may have a plurality of ventilation holes, and each of the second fixtures 2 includes a vertical portion fixed to the outer surface of the rotor 4 and a horizontal portion fixed to the wall of the ventilation hole through the ventilation hole. As shown in fig. 2, the horizontal portion of each second fixing member 2 is fixed to the lower wall of the vent hole, but the present utility model is not limited thereto, and the horizontal portion of each second fixing member 2 may be fixed to the other wall of the vent hole.

Alternatively, the plurality of second fixtures 2 may be six second fixtures 2, and the six second fixtures 2 may be identical and may be formed using stainless steel, such as 304. The second fixing piece 2 is mainly used for fixing the stator and the rotor 4, so that the stator and the rotor of the wind driven generator cannot generate relative displacement in the radial direction and the axial direction.

According to the utility model, the stator and the rotor of the wind driven generator can be firmly fixed and transported together by utilizing the original structures of the stator and the rotor.

As shown in fig. 3, according to the present utility model, the support frame 3 may have a Y-shape or a three-fork shape, and three ends of the support frame 3 are respectively fixed to the second ends of the stators 5.

According to the present utility model, three ends of the supporting frame 3 may be respectively formed with protrusions, each of which is inserted into a hole formed on a lower surface of the second end of the stator 5 to firmly support the stator 5. Although the supporting frame 3 is shown to have a Y-shape or a three-fork shape, the present utility model is not limited thereto, and the supporting frame may have other shapes as long as the stator 5 can be firmly supported so that the stator 5 and the rotor 4 are firmly fixed.

Alternatively, the transport support frame 3 may be formed of square tubes, may be formed of high carbon steel such as Q235, Q345 or the like, and is primarily used to support the wind turbine, provide a carrier for the transport of the wind turbine, and secure the support frame 3 to the stator 5 using fasteners, such as bolts. During lifting, the supporting frame 3 and the stator 5 can be integrated.

The mounting and dismounting operations of the stator and rotor securing device of the wind power generator according to the present utility model will be described below with reference to the accompanying drawings.

After the stator 5 and the rotor 4 are processed and manufactured by a generator factory respectively, the stator and the rotor are sleeved together by a sleeved tool, and then the stator 5 and the rotor 4 are fixed by the second fixing pieces 2, specifically, one end of each second fixing piece 2 is fixed to the second end of the rotor 4, and the other end of each second fixing piece 2 is fixed to the hole wall of the ventilation hole of the stator 5. Next, the first end of the rotor 4 and the first end of the stator 5 are fixed to each other by the first fixing member 1, the fixing ring 12 is connected to the plurality of connecting members 11 by means of fasteners such as bolts, the division bars 13 are inserted into the stator-rotor air gap and the center axis of the division bars 13 is secured to the magnetic steel d-axis position, and then one end of the division bars 13 is connected to the fixing ring 12 by means of fasteners such as bolts, and the above-described installation operation of the stator-rotor fixing device of the wind power generator is described.

In the transportation process, the sleeving tool is removed, the fixed stator and rotor are placed on the support frame 3, the stator and rotor are fastened to the support frame 3 through fasteners such as bolts, and then the wind driven generator is integrally packaged to enable the wind driven generator to have transportation conditions.

After the stator and rotor are transported to the destination, it is necessary to unpack, specifically unpack the wind power generator, unpack the support frame 3, hang the integrally fixed stator and rotor to the gear box assembly, fix the rotor 4 and the high speed shaft of the gear box, fix the stator 5 and the gear box housing with fasteners such as bolts. After the rotor to be fixed is rotationally matched with the gear box, the second fixing pieces 2 are removed one by one, the parting strips 13 are removed, the fixing rings 12 are removed, and the connecting pieces 11 are removed. And after the disassembly is completed, installing accessories such as a ventilation groove of the wind driven generator and the like.

In the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The construction and operation of the apparatus are described using terms of front, rear, up, down, horizontal, vertical, etc. for convenience of description, but the direction in which the apparatus is disposed is not limited thereto, and the apparatus may be flipped front-to-back, flipped up-and-down, or positioned in other angular orientations.

The described features, structures, or characteristics of the utility model may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the inventive aspects may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.

Claims

1. The stator and rotor fixing device of the wind driven generator is characterized by comprising:

a first fixing member (1) interposed between a rotor (4) and a stator (5) of the stator and rotor in an axial direction of the stator and rotor, a first end of the rotor (4) and a first end of the stator (5) being fixed to the first fixing member (1), respectively;

a plurality of second fixing members (2) disposed between the rotor (4) and the stator (5) at predetermined intervals along a circumferential direction of the stator and rotor, one end of each second fixing member (2) being fixed to a second end of the rotor (4), the other end of each second fixing member (2) being fixed to a portion of the stator (5) adjacent to the second end of the stator (5);

-a support frame (3) fixed to a second end of the stator (5) for supporting the stator (5).

2. Stator and rotor fixing device of a wind power generator according to claim 1, characterized in that the first fixing element (1) comprises:

a plurality of connection members (11), the plurality of connection members (11) being arranged at predetermined intervals along a circumferential direction of the stator and the rotor, each connection member (11) including a first horizontal portion fixed to the first end of the stator (5), a second horizontal portion fixed to the first end of the rotor (4), and a vertical portion connecting the first horizontal portion and the second horizontal portion.

3. Stator and rotor fixing device of a wind power generator according to claim 2, characterized in that said first fixing element (1) further comprises: -a fixing collar (12), said plurality of connectors (11) being fixed to said fixing collar (12).

4. A stator and rotor fixing device of a wind power generator according to claim 3, characterized in that said first fixing member (1) further comprises:

and a plurality of division bars (13) positioned in an air gap between the rotor (4) and the stator (5), wherein each division bar (13) corresponds to a d-axis of magnetic steel of the wind driven generator, one end of each division bar (13) is fixed to the fixed ring (12), and the number of the division bars (13) is 2P-3, wherein P is the pole logarithm of the wind driven generator.

5. Stator and rotor fixing device of a wind power generator according to claim 2, characterized in that the number of the plurality of connection members (11) is three, each of which is arranged at an angular interval of 120 degrees, or the number of the plurality of connection members (11) is six, each of which is arranged at an angular interval of 60 degrees.

6. Stator and rotor fixing device of a wind power generator according to any of the claims 1 to 5, characterized in that the rotor (4) is located inside the stator (5).

7. Stator and rotor fixing device of a wind power generator according to claim 6, characterized in that the stator (5) has a ventilation hole, each second fixing piece (2) comprising a vertical part fixed to the outer surface of the rotor (4) and a horizontal part fixed to the wall of the ventilation hole through the ventilation hole.

8. Stator and rotor fixing device of a wind power generator according to claim 1, characterized in that the support frame (3) is Y-shaped, three ends of the support frame (3) being fixed to the second end of the stator (5) respectively.

9. Stator and rotor fixing device of a wind power generator according to claim 8, characterized in that said three ends of said supporting frame (3) are respectively formed with projections, each of which is inserted into a hole formed on the lower surface of the second end of said stator (5).

10. A stator and rotor fixing device of a wind power generator according to claim 3, characterized in that the rotor (4) is located inside the stator (5), the outer diameter of the fixing ring (12) is smaller than the inner diameter of the stator (5), and each connecting piece (11) is fixed to the fixing ring (12) by a portion of the first horizontal portion adjacent to the vertical portion or a portion of the second horizontal portion adjacent to the vertical portion.