Stator support of wind driven generator

Abstract

The utility model discloses a wind driven generator stator support which comprises a surrounding ring, an upper flange and a lower flange are fixedly connected to the upper side and the lower side of the inner wall of the surrounding ring respectively, an annular plate is fixedly connected to the middle of the inner wall of the surrounding ring, triangular plates are fixedly connected to the upper surface and the lower surface of the annular plate, and the triangular plates are fixedly connected with the inner wall of the surrounding ring. A plurality of reinforcing plates are fixedly connected to the side edge of the annular plate, connecting columns are inserted into the reinforcing plates, the two ends of each connecting column are connected with the upper flange and the lower flange, the upper flange and the lower flange are fixedly connected through the annular plate, and the surrounding ring is fixedly connected to the outer portion of the upper flange and the outer portion of the lower flange. The stator module is detachably connected with the upper flange and the lower flange, when the stator and the wind driven generator stator support need to be transported, the wind driven generator stator support and the stator module can be independently transported, and the diameter and the weight of the wind driven generator stator support are smaller than those of the assembled stator. Independent transportation of the wind driven generator stator support is simple and convenient, and transportation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind generators, in particular to a stator bracket of a wind generator. Background Art

[0002] The generator includes a stator and a rotor. The stator includes a wind turbine stator bracket, an iron core and a winding. The wind turbine stator bracket is used to fix the iron core and the winding. The process of installing the iron core and the winding to the wind turbine stator bracket is very complicated. Usually, the wind turbine stator bracket, the iron core and the winding need to be assembled into a complete stator at the final assembly base before transportation.

[0003] As wind turbines become increasingly large, the generators they are suitable for are also getting larger and larger. For example, the transportation process of the stator of the direct-drive permanent magnet generator of the existing large-megawatt wind turbine is very difficult. The reasons are: on the one hand, the diameter of the assembled stator is large and the weight is heavy, which requires the transportation tool to have a large enough space and a high carrying capacity. At the same time, the stator needs to be kept stable during transportation to avoid imbalance, which puts forward higher requirements on the stator fixing method; on the other hand, the iron core and winding are key components in the generator, so they must be protected from damage during transportation. However, the volume of the assembled stator is large, which is not conducive to the implementation of protective measures for the iron core and winding. Moreover, the diameter of the assembled stator is large. Once it collides with other objects, its impact force is large, so it is easier to damage the iron core and winding. After the stator is assembled, it is transported, and due to its large diameter and heavy weight, the transportation process will be very difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a wind turbine stator bracket to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stator support of a wind turbine generator, comprising a ring, wherein the upper and lower sides of the inner wall of the ring are respectively fixedly connected with an upper flange and a lower flange, a ring plate is fixedly connected with the middle of the inner wall of the ring, and the upper and lower surfaces of the ring plate are fixedly connected with a triangular plate, and the triangular plate is fixedly connected with the inner wall of the ring;

[0006] The upper flange and the lower flange are provided with a number of holes arranged in a circular pattern, which is convenient for installing the stator bracket of the wind turbine generator. When there is a certain distance between the upper flange and the lower flange, the ring plate can improve the connection strength between the upper flange and the lower flange, avoid deformation of the upper flange and the lower flange, and have stronger torsion resistance;

[0007] The side of the ring plate is fixedly connected with a plurality of reinforcing plates, the reinforcing plates are plugged with connecting columns, and the two ends of the connecting columns are connected to the upper flange and the lower flange, ensuring that the stator support of the wind turbine generator will not be locally deformed after the stator module is installed, and the support has more sufficient rigidity.

[0008] Furthermore, the peripheral surface of the surrounding ring is provided with a plurality of ventilation holes penetrating in the radial direction thereof, and the ventilation holes can dissipate heat from the stator and the rotor, thereby improving the cooling efficiency of the stator and the rotor during continuous power generation.

[0009] Furthermore, a plurality of first weight-reducing holes are provided on the surface of the ring plate, and a second weight-reducing hole is provided on the surface of the triangular plate, so as to reduce the weight of the stator bracket of the wind turbine generator and save materials.

[0010] Furthermore, the upper flange and the lower flange are fixedly connected to the edge of the ring plate with columns, thereby improving the structural strength of the connection between the upper flange and the lower flange and the ring plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The upper flange and the lower flange are fixedly connected by a ring plate, and the surrounding ring is fixedly connected to the outside of the upper flange and the lower flange. The stator module is connected to the upper flange and the lower flange in a detachable manner. When the stator and the wind turbine stator bracket need to be transported, the wind turbine stator bracket and the stator module can be transported separately. The diameter and weight of the wind turbine stator bracket are smaller than the diameter and weight of the assembled stator. It is simple and convenient to transport the wind turbine stator bracket separately, which reduces the difficulty of transportation.

[0013] (2) After the stator module and the stator bracket of the wind turbine are separated and connected by the upper flange and the lower flange, it is convenient to transport the stator module separately. When a single stator module is damaged, only the damaged stator module needs to be replaced, without replacing the entire core and winding, which can improve the maintenance speed and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a top view of the ring plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the connection between the ring plate and the triangular plate of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the connection between the surrounding ring and the ventilation hole of the utility model.

[0019] In the figure: 1. surrounding ring; 2. upper flange; 3. ring plate; 4. first weight-reducing hole; 5. triangular plate; 6. column; 7. lower flange; 8. reinforcement rod; 9. connecting column; 10. reinforcement plate; 11. circular hole; 12. second weight-reducing hole; 13. ventilation hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-5 The utility model provides a technical solution: a stator support of a wind turbine generator, comprising a ring 1, an upper flange 2 and a lower flange 7 are fixedly connected to the upper and lower sides of the inner wall of the ring 1, a ring plate 3 is fixedly connected to the middle of the inner wall of the ring 1, and a triangular plate 5 is fixedly connected to the upper and lower surfaces of the ring plate 3, and the triangular plate 5 is fixedly connected to the inner wall of the ring 1;

[0023] The upper flange 2 and the lower flange 7 have the same size, and the ring plate 3 surrounds the upper flange 2 and the lower flange 7, so that the stator support of the wind turbine generator has a flat appearance. The stability of the connection between the ring plate 3 and the surrounding ring 1 is improved by a plurality of annularly arranged triangular plates 5. The number of triangular plates 5 can be adjusted according to demand to ensure that the stator support of the wind turbine generator has sufficient force bearing capacity;

[0024] Several reinforcing plates 10 are fixedly connected to the side of the ring plate 3, and connecting columns 9 are inserted into the reinforcing plates 10. Both ends of the connecting columns 9 are connected to the upper flange 2 and the lower flange 7. The reinforcing plates 10 and the connecting columns 9 are connected by welding. When the two are welded, the length of the weld can be increased, which helps to improve the connection strength.

[0025] In this embodiment, if Figure 5 As shown, the peripheral surface of the surrounding ring 1 is provided with a plurality of ventilation holes 13 penetrating in the radial direction thereof, and a plurality of ventilation holes 13 are provided so that the surrounding ring 1 and the spaces inside the upper flange 2 and the lower flange 7 form a cooling channel for cooling the stator and the rotor.

[0026] In this embodiment, if Figure 2 and Figure 3 As shown, a reinforcement rod 8 is fixedly connected between the upper flange 2 and the lower flange 7. The reinforcement rod 8 is located at the gap of the reinforcement plate 10. The reinforcement rod 8 supports the edges of the upper flange 2 and the lower flange 7. When the upper flange 2 and the lower flange 7 bear weight, it ensures that the upper flange 2 and the lower flange 7 will not be deformed.

[0027] In this embodiment, if Figure 1 and Figure 4 As shown, a plurality of first weight-reducing holes 4 are provided on the surface of the ring plate 3, and a second weight-reducing hole 12 is provided on the surface of the triangular plate 5. The first weight-reducing holes 4 and the second weight-reducing holes 12 can not only reduce the weight of the stator bracket of the wind turbine, but also serve as part of the cooling channel. The first weight-reducing hole 4 is elliptical. Such a design can increase the area of ​​the first weight-reducing hole 4 as much as possible while ensuring the strength of the ring plate 3, thereby further reducing the weight of the ring plate 3.

[0028] In this embodiment, if Figure 2 and Figure 3 As shown, a circular hole 11 is provided on the surface of the reinforcement plate 10 , and the connecting column 9 is inserted into the circular hole 11 , so as to facilitate the insertion and welding of the connecting column 9 and the reinforcement plate 10 .

[0029] In this embodiment, if Figure 1 As shown, the upper flange 2 and the lower flange 7 are fixedly connected to the edge of the ring plate 3 with columns 6. The number and spacing of the columns 6 can be determined according to actual needs. Several columns 6 are equivalent to the reinforcing ribs of the ring plate 3, further enhancing the strength of the ring plate 3.

[0030] Specifically, when in use, the upper flange 2 and the lower flange 7 are connected to a separate stator module through a plurality of annularly arranged holes, and the stator module is also fitted with the surrounding ring 1 to ensure that the stator module will not become loose after installation. When transporting the stator bracket and the stator of the wind turbine generator, it is not necessary to install the stator module on the stator bracket of the wind turbine generator, and the stator bracket and the stator of the wind turbine generator can be transported separately, which reduces the difficulty of transportation;

[0031] Each stator module can be individually installed on the stator bracket of the wind turbine generator, which can simplify the assembly process. Moreover, a single stator module is small in size and light in weight, which makes it easy to take protective measures to ensure that it is not damaged. Multiple stator modules can be stacked together to save space and facilitate transportation. After the stator module is assembled on the upper flange 2 and the lower flange 7, the upper flange 2 and the lower flange 7 are supported by the triangular plate 5 and the ring plate 3. The gaps between the stator modules cooperate with the ventilation holes 13, so that air can flow inside and outside the stator bracket of the wind turbine generator, thereby improving the heat dissipation effect.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine stator support, characterized in that: It comprises a ring (1), wherein the upper and lower sides of the inner wall of the ring (1) are respectively fixedly connected with an upper flange (2) and a lower flange (7), a ring plate (3) is fixedly connected to the middle of the inner wall of the ring (1), and the upper and lower surfaces of the ring plate (3) are fixedly connected with a triangular plate (5), and the triangular plate (5) is fixedly connected to the inner wall of the ring (1); A plurality of reinforcing plates (10) are fixedly connected to the side of the ring plate (3), a connecting column (9) is inserted into the reinforcing plate (10), and two ends of the connecting column (9) are connected to the upper flange (2) and the lower flange (7).

2. A wind turbine stator support according to claim 1, characterized in that: The peripheral surface of the surrounding ring (1) is provided with a plurality of ventilation holes (13) penetrating in the radial direction thereof.

3. A wind turbine stator support according to claim 1, characterized in that: A reinforcement rod (8) is fixedly connected between the upper flange (2) and the lower flange (7), and the reinforcement rod (8) is located at the gap of the reinforcement plate (10).

4. A wind turbine stator support according to claim 1, characterized in that: A plurality of first weight-reducing holes (4) are provided on the surface of the ring plate (3), and a second weight-reducing hole (12) is provided on the surface of the triangular plate (5).

5. A wind turbine stator support according to claim 1, characterized in that: A circular hole (11) is provided on the surface of the reinforcing plate (10), and the connecting column (9) is inserted into the circular hole (11).

6. A wind turbine stator support according to claim 1, characterized in that: The upper flange (2) and the lower flange (7) are fixedly connected to the edges of the ring plate (3) with columns (6).

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