Cabin structure and wind generating set

Abstract

The utility model discloses a cabin structure and a wind generating set, and relates to the technical field of wind power generation, in order to solve the problem that an existing box transformer substation rack is not high in stability, the cabin structure comprises a cabin body, the cabin body comprises a main rack and a rear rack arranged at the end of the main rack, and the main rack is connected with the rear rack through bolts. The first box-type transformer substation rack is arranged on one side of the main rack, the first box-type transformer substation structure is arranged on the first box-type transformer substation rack, the second box-type transformer substation rack is arranged on one side of the rear rack, and the second box-type transformer substation structure is arranged on the second box-type transformer substation rack, so that the two box-type transformer substation racks are mutually independent and can be independently mounted as independent modules, the mounting size is reduced, and the mass is reduced; the overall structure is simplified, the structural cost is reduced, and the stability and safety of the box transformer substation during operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and more specifically, to a cabin structure and a wind power generator set. Background Art

[0002] With the development of the wind power industry, wind turbines are increasingly becoming larger. To minimize overall unit costs, a nacelle-mounted transformer design has been proposed. This involves placing the transformer and converter, previously located on the ground, in the nacelle, reducing costs for cables and civil engineering. Among various configurations for mounting a transformer on top of the drive train (such as above the drive train or behind the drive train), placing the transformer on the same side of the drive train offers significant advantages, requiring less structural strength while increasing overall unit stability. This is the most widely used configuration.

[0003] The existing technology places multiple box transformers on the same box transformer rack, and extends support beams from the rack to fix them to the cabin rack. Due to the limited length of the main rack, the box transformer rack cannot be completely fixed on the main rack, and the deformation of the main rack and the rear rack are inconsistent. The structure in which the box transformer rack is fixed to the main rack and the rear rack separately is difficult to install. In the current design, the supports of the box transformer rack are all arranged on the rear rack, and the rear rack vibrates greatly during the operation of the wind turbine generator set. For the transformer (part of the box transformer) that requires high stability, there is instability and certain risks. At the same time, multiple box transformers are of large mass. Placing them on the same box transformer rack places higher requirements on their strength and rigidity. At the same time, it is necessary to add trusses in the cabin above the box transformer to ensure the overall structural strength, which increases the cost to a certain extent.

[0004] Therefore, how to solve the problem of low stability of existing box-type transformer racks is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a cabin structure in which the two box-type transformer racks are independent of each other and can be installed independently as separate modules to reduce the installation size, reduce the weight, simplify the overall structure, reduce the structural cost, and improve the stability and safety of the box-type transformer during operation.

[0006] Another object of the present invention is to provide a wind turbine generator set including the above-mentioned nacelle structure, which can improve the stability of the entire generator set during operation, thereby improving safety.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A cabin structure, comprising:

[0009] The cabin body includes a main frame and a rear frame provided at the end of the main frame, and the main frame and the rear frame are connected by bolts;

[0010] A first box-type transformer rack is provided on one side of the main rack, and a first box-type transformer structure is provided on the first box-type transformer rack;

[0011] The second box-type transformer rack is arranged on one side of the rear rack, and the second box-type transformer rack is provided with a second box-type transformer structure.

[0012] Preferably, the nacelle body further includes a main nacelle cover, which is arranged around the outer periphery of the main frame and the rear frame.

[0013] Preferably, the first box transformer structure includes a first box transformer module and a first box transformer cabin cover. The first box transformer module is arranged on the first box transformer rack. The first box transformer cabin cover is arranged around the outer periphery of the first box transformer rack, and the first box transformer cabin cover is connected to the first box transformer rack through a first connecting component. The first box transformer cabin cover is flange-connected to the main cabin cover.

[0014] Preferably, the main frame is provided with a first connecting flange, the first box transformer frame is provided with a second connecting flange, and the first connecting flange and the second connecting flange are connected by bolts.

[0015] Preferably, the first connecting assembly includes a first connecting seat welded to the first transformer frame, a connecting plate welded to the first connecting seat, a first supporting structure bolted to the connecting plate, and the first supporting structure is bolted to the first transformer cabin cover.

[0016] Preferably, the second box transformer structure includes a second box transformer module and a second box transformer nacelle cover. The second box transformer module is arranged on the second box transformer rack. The second box transformer nacelle cover is arranged around the outer periphery of the second box transformer rack, and the second box transformer nacelle cover is connected to the second box transformer rack through a second connecting assembly. The second box transformer nacelle cover is flange-connected to the main nacelle cover.

[0017] Preferably, the rear frame is provided with a third connecting flange, the second box-type transformer frame is provided with a fourth connecting flange, and the third connecting flange and the fourth connecting flange are connected by bolts.

[0018] Preferably, the second connecting assembly includes a second connecting base welded to the second transformer frame, a second supporting structure bolted to the second connecting base, and the second supporting structure is bolted to the second transformer cabin cover.

[0019] Preferably, the first transformer nacelle cover and the second transformer nacelle cover are connected via an accordion cover.

[0020] A wind turbine generator set comprises any one of the above nacelle structures.

[0021] The cabin structure provided by the present invention includes a cabin body, a first box-type transformer rack, and a second box-type transformer rack. Specifically, the cabin body includes a main frame and a rear frame provided at the end of the main frame. The main frame is bolted to the rear frame. The first box-type transformer rack is provided on one side of the main frame, and the second box-type transformer rack is provided on one side of the rear frame. Multiple box-type transformer structures are respectively installed on the first box-type transformer rack and the second box-type transformer rack. The strength of the first box-type transformer rack and the second box-type transformer rack can meet the installation requirements of a single box-type transformer structure. Therefore, there is no need to add additional trusses to strengthen the structure of the first box-type transformer rack and the second box-type transformer rack. The first box-type transformer rack and the second box-type transformer rack are directly connected to the corresponding main rack and rear rack to simplify the overall installation structure, reduce weight and reduce structural cost. The first box-type transformer rack is provided with the first box-type transformer structure, and the second box-type transformer rack is provided with the second box-type transformer structure. The first box-type transformer structure with higher stability requirements is placed on the first box-type transformer rack connected to the main rack, while the second box-type transformer structure with lower stability requirements can be placed on the second box-type transformer rack. The two box-type transformer racks are independent of each other and can be installed independently as separate modules, which can improve the stability and safety of the box-type transformer during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of the cabin structure provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the connection between the first box-type transformer rack and the main rack provided by the present invention;

[0025] Figure 3 A schematic diagram of the connection between the first box-type transformer structure and the first box-type transformer rack provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the connection between the first box-type transformer nacelle cover and the main nacelle cover provided by the present invention;

[0027] Figure 5 This is a schematic diagram of the connection between the second box-type transformer nacelle cover and the main nacelle cover provided by the present invention;

[0028] Figure 6 This is a schematic diagram of the connection between the second box-type transformer rack and the rear rack provided by the present invention;

[0029] Figure 7This is a schematic diagram of the connection between the second box-type transformer rack and the second box-type transformer structure provided by the present invention;

[0030] Figure 8 This is a schematic diagram of the connection between the first box-type transformer structure and the second box-type transformer structure provided by the present invention.

[0031] Reference numerals:

[0032] 1-nacelle body, 11-main frame, 111-first connecting flange, 12-, 121-third connecting flange, 13-main nacelle cover;

[0033] 2-first box transformer rack, 21-second connecting flange;

[0034] 3-first box transformer structure, 31-first box transformer module, 32-first box transformer nacelle cover, 33-first connecting seat, 34-connecting plate, 35-first supporting structure;

[0035] 4-second box-type transformer rack, 41-fourth connecting flange;

[0036] 5-second box transformer structure, 51-second box transformer module, 52-second box transformer nacelle cover, 53-second connecting seat, 54-second supporting structure;

[0037] 6-Accordion cover. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] It should be noted that, in the following text, the first direction is the length direction of the cabin body 1 , and the second direction is the width direction of the cabin body 1 .

[0041] The core of this utility model is to provide a nacelle structure in which the two box-type transformer racks are independent of each other and can be installed as separate modules. This reduces the installation size, reduces the weight, simplifies the overall structure, reduces the structural cost, and improves the stability and safety of the box-type transformer during operation. Another core of this utility model is to provide a wind turbine generator set including this nacelle structure, which can improve the overall stability during operation, thereby improving safety.

[0042] Please refer to Figure 1 A cabin structure includes a cabin body 1, a first box transformer rack 2, a first box transformer structure 3, a second box transformer rack 4 and a second box transformer structure 5.

[0043] Specifically, the cabin body 1 includes a main frame 11 and a rear frame 12 provided at the end of the main frame 11. The main frame 11 is bolted to the rear frame 12. The first box-type transformer frame 2 is provided on one side of the main frame 11, and the second box-type transformer frame 4 is provided on one side of the rear frame 12. Multiple box-type transformer structures are respectively installed on the first box-type transformer frame 2 and the second box-type transformer frame 4. The strength of the first box-type transformer frame 2 and the second box-type transformer frame 4 can meet the installation requirements of a single box-type transformer structure. Therefore, there is no need to add additional trusses to strengthen the structure of the first box-type transformer frame 2 and the second box-type transformer frame 4. The first box-type transformer frame 2 and the second box-type transformer frame 4 are respectively installed on the first box-type transformer frame 2 and the second box-type transformer frame 4. The rack 4 is directly connected to the corresponding main rack 11 and rear rack 12 to simplify the overall installation structure, reduce weight and reduce structural cost. The first box-type transformer rack 2 is provided with a first box-type transformer structure 3, and the second box-type transformer rack 4 is provided with a second box-type transformer structure 5. The first box-type transformer rack 3 with higher stability requirements is placed on the first box-type transformer rack 2 connected to the main rack 11, and the second box-type transformer rack 5 with lower stability requirements can be placed on the second box-type transformer rack 4. The two box-type transformer racks are independent of each other and can be installed independently as separate modules, which can improve the stability and safety of the box-type transformer during operation.

[0044] The main frame 11 and the rear frame 12 are conventional configurations of a wind turbine generator set and are fixed by bolts.

[0045] The cabin structure set up in the above manner, by treating each box transformer as an independent cabin, only needs to add a box transformer rack for placing the box transformer structure. The two box transformer racks are independent of each other and can be installed independently as separate modules to reduce the installation size, reduce the weight, simplify the overall structure, and reduce the structural cost. The safety, stability and economy of the box transformer during operation can be achieved without additional reinforcement of the rack.

[0046] In the above embodiment, the nacelle body 1 further includes a main nacelle cover 13 , which is disposed around the outer periphery of the main frame 11 and the rear frame 12 .

[0047] It should be noted that the nacelle body 1 extends along the first direction, one end of which is usually used for rotor installation and connected to the wind turbine tower, and the other end is usually used for installation of structures such as the main control cabinet. The box transformer structure is at least used to convert voltage. The electric energy generated by the rotor of the wind turbine generator set can be transmitted to the box transformer structure through cables, so that its voltage is converted to be suitable for transmission. Not limited to this, the box transformer structure can also have current limiting and other functions. This embodiment does not further limit the specific functions of the box transformer structure; in this embodiment, in view of the setting scenario of the nacelle body 1, the first direction is usually set to a horizontal direction, and the second direction is usually set to another horizontal direction perpendicular to the first direction; in this embodiment, the number of box transformer structures is two, which are respectively arranged in the second direction of the main frame 11 and the rear frame 12, and the two box transformer structures are arranged on the same side.

[0048] In the above case, the first box transformer structure 3 includes a first box transformer module 31 and a first box transformer nacelle cover 32. The first box transformer module 31 is arranged on the first box transformer rack 2. The first box transformer nacelle cover 32 is arranged around the outer periphery of the first box transformer rack 2. The first box transformer nacelle cover 32 is connected to the first box transformer rack 2 through a first connecting component. The first box transformer nacelle cover 32 is flange-connected to the main nacelle cover 13.

[0049] It can be understood that by connecting the first box-type transformer bracket with the main frame 11, the first box-type transformer structure 3 is installed to the side end of the nacelle body 1. On the one hand, the size of the nacelle structure in the first direction can be reduced accordingly, which reduces the difficulty of manufacturing and transporting it, and also makes the overall layout of the wind turbine generator set more compact and structurally reasonable. On the other hand, due to the change in the setting position of the first box-type transformer unit, the center of gravity of the entire nacelle body 1 is also offset accordingly, and it is a beneficial offset towards the axial direction of the wind turbine tower, so that the nacelle body 1 is generated during operation. The vibration amplitude is reduced, which improves the stability of the wind turbine generator set. On the other hand, compared with the existing nacelle in which the transmission cables need to be arranged from the front end to the rear end of the nacelle to connect to the substation structure and need to pass through multiple internal structures, the side placement of the first box transformer structure 3 in the technical method of the utility model makes it unnecessary to wire the transmission cables to the tail of the nacelle body 1, but only needs to pass through the side of the main nacelle cover 13 and the first box transformer nacelle cover 32 to the first box transformer structure 3, which can optimize the wiring path of the transmission cables and reduce the wiring length of the transmission cables inside the nacelle body 1.

[0050] The first transformer cabin cover 32 is also connected to the main cabin cover 13 through its own flange and bolts and nuts. The first transformer module 31 is placed on the first transformer rack 2. There is usually a connection between the main cabin cover 13 and the main rack 11. Therefore, the main cabin cover 13 can serve as the installation basis of the first transformer cabin cover 32, ensuring the stability of the installation of the first transformer cabin cover 32. Through the arrangement of the main cabin cover 13 and the first transformer cabin cover 32, the electrical components installed in the cabin body 1 and the first transformer structure 3 can be protected to avoid adverse effects of rain or sunlight on them, thereby improving the protection performance of the cabin structure.

[0051] Please refer to Figure 2 The main frame 11 is provided with a first connecting flange 111, and the first box-type transformer frame 2 is provided with a second connecting flange 21. The first connecting flange 111 and the second connecting flange 21 are connected by bolts.

[0052] It should be noted that the main frame 11 is cast with a first connecting flange 111 , and the first box-type transformer frame 2 is welded with a second connecting flange 21 , which is directly connected to the first connecting flange 111 of the main frame 11 via bolts.

[0053] Please refer to Figure 3 The first connecting assembly includes a first connecting seat 33 welded to the first box transformer frame 2, a connecting plate 34 welded to the first connecting seat 33, a first supporting structure 35 bolted to the connecting plate 34, and the first supporting structure 35 is bolted to the first box transformer cabin cover 32.

[0054] It can be understood that the first box transformer frame 2 is welded with a first connecting seat 33, wherein the first connecting seat 33 is a hot-rolled H-shaped steel, so as to obtain greater supporting strength and minimize its own weight, and meet the lightweight requirements. The connecting plate 34 is welded to the first connecting seat 33, and the first box transformer cabin cover 32 is fixed to the connecting plate 34 by bolts with the help of the first supporting structure 35.

[0055] Please refer to Figure 1 、 Figure 4 and Figure 5 The second box transformer structure 5 includes a second box transformer module 51 and a second box transformer nacelle cover 52. The second box transformer module 51 is arranged on the second box transformer rack 4. The second box transformer nacelle cover 52 is arranged around the outer periphery of the second box transformer rack 4, and the second box transformer nacelle cover 52 is connected to the second box transformer rack 4 through a second connecting component. The second box transformer nacelle cover 52 is flange-connected to the main nacelle cover 13.

[0056] It should be noted that the second box transformer cabin cover 52 is also connected to the main cabin cover 13 through its own flange and bolts and nuts. The second box transformer module 51 is placed on the second box transformer rack 4. There is usually a connection between the main cabin cover 13 and the rear rack 12. Therefore, the main cabin cover 13 can serve as the installation basis for the second box transformer cabin cover 52, ensuring the stability of the installation of the second box transformer cabin cover 52. Through the arrangement of the main cabin cover 13 and the second box transformer cabin cover 52, the electrical components installed in the cabin body 1 and the second box transformer structure 5 can be protected to avoid the adverse effects of rain or sunlight on them, thereby improving the protection performance of the cabin structure.

[0057] Please refer to Figure 6 The rear frame 12 is provided with a third connecting flange 121, and the second box-type transformer frame 4 is provided with a fourth connecting flange 41. The third connecting flange 121 and the fourth connecting flange 41 are connected by bolts.

[0058] It can be understood that the third connecting flange 121 is welded to the rear frame 12, the second box-type transformer frame 4 is welded with the fourth connecting flange 41, and the third connecting flange 121 and the fourth connecting flange 41 are directly connected by bolts and nuts.

[0059] Please refer to Figure 7 The second connecting assembly includes a second connecting base 53 welded to the second box transformer frame 4, a second supporting structure 54 bolted to the second connecting base 53, and the second supporting structure 54 is bolted to the second box transformer nacelle cover 52.

[0060] It should be noted that the second transformer frame 4 is welded with a second connection seat 53 , and the second transformer nacelle cover 52 is fixed to the second connection seat 53 by bolts with the help of the second support structure 54 .

[0061] Please refer to Figure 8 The first transformer nacelle cover 32 and the second transformer nacelle cover 52 are connected through the accordion cover 6 .

[0062] It can be understood that the first transformer nacelle cover 32 and the second transformer nacelle cover 52 are connected via the accordion cover 6 as a cable channel.

[0063] In summary, the cabin structure provided by the present invention has two box-type transformer structures respectively installed on the first box-type transformer rack 2 and the second box-type transformer rack 4. The strength of a single box-type transformer rack can meet the installation strength requirements of a single box-type transformer structure. Therefore, there is no need to add additional trusses to strengthen the structure. The box-type transformer rack is directly connected to the cabin body 1 through a flange. The main cabin cover 13 and the box-type transformer cabin cover are fixed through the flange interface on the box-type transformer cabin cover. The box-type transformer cabin cover and the box-type transformer rack are fixed through a connecting seat. When installing the box-type transformer structure, the box-type transformer structure with higher stability requirements is placed on the first box-type transformer rack 2 connected to the main frame 11, and the box-type transformer structure with relatively lower requirements can be placed on the second box-type transformer rack 4. The two box-type transformer cabins are independent of each other and can be installed independently as separate modules.

[0064] With this arrangement, compared with the existing box-type transformer top structure, the box-type transformer module of the present application is decoupled and serves as a separate compartment, which reduces the installation size requirements, reduces the weight of the top module, simplifies the interior and connection structure of the box-type transformer compartment, optimizes the overall structure, reduces the structural cost, and improves the stability and safety of the box-type transformer during operation.

[0065] In addition to the nacelle structures disclosed in the above embodiments, the present invention also provides a wind turbine generator set including the above nacelle structure. For the structures of other parts of the wind turbine generator set, please refer to the prior art and will not be described in detail herein.

[0066] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above is a detailed introduction to a nacelle structure and a wind turbine generator set provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cabin structure, characterized in that: include: A cabin body (1), the cabin body (1) comprising a main frame (11) and a rear frame (12) provided at an end of the main frame (11), the main frame (11) and the rear frame (12) being bolted together; A first box-type transformer rack (2) is provided on one side of the main frame (11), and a first box-type transformer structure (3) is provided on the first box-type transformer rack (2); The second box-type transformer rack (4) is arranged on one side of the rear rack (12), and a second box-type transformer structure (5) is provided on the second box-type transformer rack (4).

2. The cabin structure according to claim 1, characterized in that The cabin body (1) further comprises a main cabin cover (13), and the main cabin cover (13) is arranged around the outer periphery of the main frame (11) and the rear frame (12).

3. The cabin structure according to claim 2, characterized in that: The first box-type transformer structure (3) comprises a first box-type transformer module (31) and a first box-type transformer cabin cover (32), wherein the first box-type transformer module (31) is arranged on the first box-type transformer frame (2), the first box-type transformer cabin cover (32) is arranged around the outer periphery of the first box-type transformer frame (2), and the first box-type transformer cabin cover (32) is connected to the first box-type transformer frame (2) via a first connecting component, and the first box-type transformer cabin cover (32) is flange-connected to the main cabin cover (13).

4. The cabin structure according to claim 3, characterized in that: The main frame (11) is provided with a first connecting flange (111), the first box-type transformer frame (2) is provided with a second connecting flange (21), and the first connecting flange (111) and the second connecting flange (21) are connected by bolts.

5. The cabin structure according to claim 4, characterized in that: The first connecting assembly comprises a first connecting seat (33) welded to the first box-type transformer frame (2), a connecting plate (34) welded to the first connecting seat (33), and a first supporting structure (35) bolted to the connecting plate (34); the first supporting structure (35) is bolted to the first box-type transformer cabin cover (32).

6. The cabin structure according to claim 3, characterized in that: The second box transformer structure (5) comprises a second box transformer module (51) and a second box transformer cabin cover (52), wherein the second box transformer module (51) is arranged on the second box transformer frame (4), the second box transformer cabin cover (52) is arranged around the outer periphery of the second box transformer frame (4), and the second box transformer cabin cover (52) is connected to the second box transformer frame (4) through a second connecting component, and the second box transformer cabin cover (52) is flange-connected to the main cabin cover (13).

7. The cabin structure according to claim 6, characterized in that The rear frame (12) is provided with a third connecting flange (121), the second box-type transformer frame (4) is provided with a fourth connecting flange (41), and the third connecting flange (121) and the fourth connecting flange (41) are connected by bolts.

8. The cabin structure according to claim 7, characterized in that: The second connecting assembly comprises a second connecting seat (53) welded to the second box-type transformer frame (4), a second supporting structure (54) bolted to the second connecting seat (53), and the second supporting structure (54) is bolted to the second box-type transformer cabin cover (52).

9. The cabin structure according to any one of claims 6 to 8, characterized in that: The first box-type transformer nacelle cover (32) and the second box-type transformer nacelle cover (52) are connected via an accordion cover (6).

10. A wind turbine generator set, characterized in that: The invention comprises the cabin structure according to any one of claims 1 to 9.

Images