Layered cabin and wind turbine

Abstract

This utility model discloses a layered nacelle and wind turbine. It includes a nacelle frame, a nacelle cover, and a horizontal platform. The nacelle frame consists of two side frames, multiple top members, bottom members, and a tail member. The side frames include two non-parallel lower main chords and an upper main chord. The lower main chord is horizontal, while the upper main chord slopes downwards from the front of the nacelle. The nacelle cover is mounted on the nacelle frame, forming the internal space of the nacelle. The bottom of the nacelle cover is located below the lower main chords, and the horizontal platform is set on the lower main chords and bottom members of the nacelle frame. The horizontal platform divides the interior of the nacelle into upper and lower layers. Without increasing the overall volume of the nacelle, the arrangement of the nacelle frame, nacelle cover, and horizontal platform creates two layers, replacing the original bulky cantilever support platform, achieving a rational layout and increasing the convenience of maintenance personnel.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a layered nacelle and wind turbine. Background Technology

[0002] Modern wind turbines use blades to convert the kinetic energy of air molecules into rotational mechanical energy, which is then used to drive a generator to produce electricity.

[0003] Typically, the nacelle of a wind turbine generator set, including the gearbox, houses all the components necessary for converting mechanical energy into electrical energy: such as the drivetrain (including the main shaft, main bearings, and bearing housings), gearbox, and generator. It also includes auxiliary systems to maintain the normal operation of these components: such as cooling systems, lubrication systems, and yaw drive systems.

[0004] Considering the requirements for transporting wind turbine nacelles, the size of the internal space of the nacelle is very limited. Therefore, the structural form of the nacelle will affect whether the internal components can be arranged and set up reasonably.

[0005] Conventional wind turbines typically have multiple yaw drive units (including yaw reducers and yaw motors) distributed around the bearing housing / base. The nacelle platform where maintenance personnel stand is usually located above the yaw drive system for easy access and improved safety. Furthermore, several components located at the bottom of the gearbox and generator (such as the gearbox lubricating oil reservoir) are also located below the nacelle platform for ease of access, safety, and the wind turbine's tilt angle. Therefore, there are actually several components that may require inspection or maintenance below the nacelle platform. However, the space below the nacelle platform of a conventional wind turbine is very limited (total volume is finite), which increases the difficulty of maintenance.

[0006] On the other hand, as the number of internal components housed on the nacelle platform increases, or as the power of the wind turbine increases, leading to a rise in the weight of individual components, the support capacity required by the nacelle platform must increase. Conventional wind turbines typically have a nacelle platform extending from the rear of the base to support components such as the electrical control cabinet inside the nacelle. This support method is a typical example of cantilever support. Due to the inefficient nature of cantilever support, the nacelle platform requires a large amount of material to ensure support capacity, thus increasing the cost of the nacelle. Generally, wind turbines do not have a complete nacelle frame. The support for the nacelle housing is usually achieved by profiles (such as I-beams) embedded in the nacelle housing and connected to the base or nacelle platform. These profiles are integrated with the nacelle housing during production. The nacelle platform and the nacelle frame or nacelle housing support are not a complete structure, and more importantly, the nacelle platform also needs to support the nacelle housing, which undoubtedly increases the burden on the nacelle platform.

[0007] Therefore, a new cabin design is needed, including innovative support for the platform and the internal layout of the cabin, which can effectively support the platform and its components, and also improve the convenience of maintenance inside the cabin. Summary of the Invention

[0008] To address at least one of the aforementioned technical problems, a first aspect provides a layered cabin design.

[0009] The cabin includes a cabin frame, a cabin canopy, and a horizontal platform;

[0010] The cabin frame consists of two side frames, multiple top members, bottom members, and tail members.

[0011] The side frame includes two non-parallel main chords and multiple support members, the support members connecting the two main chords;

[0012] The main chord near the bottom of the cabin is the lower main chord, which is horizontally positioned; the main chord near the top of the cabin is the upper main chord, which slopes downwards from the front of the cabin.

[0013] The lower main chords of the two side frame structures are connected by the bottom member, and the upper main chords of the two side frame structures are connected by the top member;

[0014] The nacelle cover is installed on the nacelle frame, forming the interior space of the nacelle; the bottom of the nacelle cover is located below the lower main chord.

[0015] The horizontal platform is mounted on the lower main chord and bottom members of the cabin frame; the horizontal platform divides the interior of the cabin into upper and lower spaces.

[0016] In a further technical solution, the horizontal platform comprises multiple plates laid on the lower main chord and bottom members of the cabin frame.

[0017] The horizontal platform is an incomplete structure, and no board is laid in the middle of the horizontal platform.

[0018] The height of the upper space is the distance between the horizontal platform and the top of the nacelle of the wind turbine, and the minimum height of the upper space is 170cm to 190cm.

[0019] The lower space contains the gearbox lubrication and cooling system of the wind turbine, generator cooling system piping, cooling pump, radiator, yaw pinion and yaw ring gear, power cable, communication cable, and hydraulic piping.

[0020] In a further technical solution, the height of the lower space is the distance between the horizontal platform and the bottom of the nacelle of the wind turbine, and the maximum height of the lower space is 10cm to 30cm greater than the height of the radiator.

[0021] The gearbox and generator of the wind turbine are partially located in the upper space, and the remaining parts are located in the lower space.

[0022] The two side frames are connected to the base of the wind turbine.

[0023] The horizontal platform is provided with a hatch near the rear of the cabin, through which the upper space and the lower space can be accessed.

[0024] Secondly, a wind turbine generator is provided, the wind turbine generator including the aforementioned layered nacelle.

[0025] The beneficial effects of this utility model are as follows: First, it introduces a nacelle frame, and the nacelle platform is composed of the nacelle frame and the plates installed on it, eliminating the need for a bulky cantilever support nacelle platform. While ensuring the platform's support capacity, the amount of material used in the nacelle support structure is reduced. Second, the horizontal platform remains level, facilitating the installation and fixing of internal nacelle components and allowing for easy movement of maintenance personnel. The nacelle cover, in conjunction with the nacelle frame (upper chord), is inclined, creating more lower-level space below the horizontal platform, improving the convenience of auxiliary system maintenance, and effectively utilizing the limited space inside the nacelle. Without increasing the overall volume of the nacelle, the nacelle frame, nacelle cover, and horizontal platform create two levels of space, each housing corresponding components, achieving a rational layout within the nacelle and increasing the overall convenience for maintenance personnel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cabin frame of a layered cabin according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the side frame of a layered cabin according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of a layered cabin configuration according to an embodiment of the present utility model;

[0029] Figure 4 This is an embodiment of the present utility model showing the horizontal platform configuration of a layered cabin.

[0030] Figure 5 This is an overhead view of a horizontal platform of a layered cabin according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram illustrating the lower space components of a layered cabin according to an embodiment of the present invention.

[0032] Explanation of icon numbers:

[0033] 1. Engine room frame; 1.1. Side frame; 1.11. Lower main chord; 1.12. Upper main chord; 1.13. Supporting members; 1.2. Top members; 1.3. Bottom members; 1.4. Tail members; 2. Engine room canopy; 3. Horizontal platform; 4. Upper space; 5. Lower space; 6. Generator cooling system piping; 7. Cooling pump; 8. Radiator; 9. Yaw pinion; 10. Yaw ring gear; 11. Power cable; 12. Communication cable; 13. Hatch.

[0034] It is worth noting that the above figures are for illustrating the features of this utility model and are not intended to show any actual structure or reflect the dimensions, proportions, or other details of various components. To more clearly illustrate the principle of this utility model and to avoid unnecessary details obscuring its principles, the examples in the figures have been simplified. These illustrations will not cause inconvenience to those skilled in the art in understanding this patent, while actual embodiments may include more modules or components. Detailed Implementation

[0035] To make the objectives and technical solutions of the present utility model clearer, the embodiments of the present utility model will be fully described below with reference to the accompanying drawings. This patent describes only a portion of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] An embodiment of a layered cabin

[0037] The cabin includes the cabin frame (1) (e.g.) Figure 1 (as shown), cabin cover (2) and horizontal platform (3).

[0038] The cabin frame (1) consists of two side frames (1.1), multiple top members (1.2), bottom members (1.3) and tail members (1.4).

[0039] like Figure 2 As shown, the side frame (1.1) contains two non-parallel main chords, which are connected by multiple support members (1.13). Most of the support members (1.13) are vertical, that is, perpendicular to the horizontal plane, but some are inclined, similar to the web members in a truss structure.

[0040] The main chord near the bottom of the cabin is the lower main chord (1.11), which is horizontally positioned. The main chord near the top of the cabin is the upper main chord (1.12), which slopes downwards from the front of the cabin. Figure 2 In the side view shown, the planar projection of the side frame (1.1) of this embodiment can be approximated as a trapezoid.

[0041] like Figure 1 As shown, the lower main chord (1.11) of the two side frames (1.1) are connected by the bottom member (1.3), and the upper main chord (1.12) of the two side frames (1.1) are connected by the top member (1.2).

[0042] like Figure 3 As shown, the cabin cover (2) is installed on the cabin frame (1) and forms the interior space of the cabin. The bottom of the cabin cover (2) is located below the lower main chord (1.11).

[0043] like Figure 4 As shown, the horizontal platform (3) is set on the lower main chord (1.11) and bottom member (1.3) of the nacelle frame (1). The horizontal platform (3) is used for the placement of internal components of the nacelle (such as control cabinets, converters, and even transformers) and for maintenance personnel to stand on. On the other hand, the horizontal platform (3) divides the interior of the nacelle into an upper space (4) and a lower space (5).

[0044] Furthermore, the horizontal platform (3) includes multiple plates laid on the lower main chord (1.11) and bottom members (1.3) of the cabin frame (1). In practical applications, the thickness of the plates is calculated according to the weighing requirements, and the important load is the gravity load.

[0045] The novelty and advantages of the above technical solution are:

[0046] a) First, a nacelle frame (1) was introduced, which is based on the side frame (1.1) and connected to the base near the wind turbine base. The two side frames (1.1) are connected by bottom rods (1.3). The horizontal platform (3) is composed of the nacelle frame (1) and the support plate set on it, replacing the bulky cantilever support platform. At the same time, the nacelle frame (1) can also support the nacelle cover (2). The weight of the internal components of the nacelle and the nacelle is transferred to the base through the nacelle frame (1), which ensures the support capacity while reducing the amount of material used.

[0047] b) Secondly, the main chords in the side frame (1.1) are not parallel. The lower main chord (1.11) is horizontally arranged, and the upper chord slopes downward from the front of the cabin. That is, the distance between the two main chords near the rear of the cabin is the smallest, forming an approximately trapezoidal structure. The cabin cover (2) is fixed to the cabin frame (1). The top of the cabin is arranged according to the direction of the upper chord, and the bottom of the cabin cover (2) is located below the lower main chord (1.11).

[0048] c) The horizontal platform (3) is set on the lower main chord (1.11) and bottom member (1.3) of the nacelle frame (1), naturally dividing the interior of the nacelle into upper and lower spaces. The nacelle cover (2) is set at an angle in conjunction with the nacelle frame (upper main chord (1.12)), creating more lower space (5) below the horizontal platform (3), improving the convenience of auxiliary system maintenance, and making effective use of the limited space inside the nacelle. At the same time, since the horizontal platform (3) is always in a horizontal state, it is convenient to set up the internal components of the nacelle on it, and it is also convenient for maintenance personnel to move around.

[0049] like Figure 5 As shown, from a top-down view, it is clear that the horizontal platform (3) is an incomplete structure, with no sheet metal laid in the middle of the horizontal platform (3). These unlaid areas are used to house components such as the main shaft, bearing housing, base, gearbox, and generator.

[0050] Due to the clearance between the blades and the tower, modern large wind turbines are designed with a certain tilt angle. Therefore, the gearbox and generator of the wind turbine are tilted relative to the horizontal plane. At the same time, considering that the horizontal platform (3) that divides the upper space (4) and lower space (5) inside the nacelle is horizontal, part of the gearbox and generator are located in the upper space (4), and the rest are located in the lower space (5).

[0051] Taking this embodiment as an example, the shape of the side frame and the shape of the nacelle canopy (2) can be referenced. Figure 3 . Figure 4 The layout of the horizontal platform (3) and its position in the entire engine room are shown. It can be seen that the height of the upper space (4) is relatively small near the rear of the engine room. The gearbox and generator are generally located in the middle of the engine room, near the rear of the engine room. Therefore, based on the actual layout space constraints, part of the gearbox and generator must be located in the upper space (4), while the other part must be located in the lower space (5).

[0052] The height of the upper space (4) is the distance between the horizontal platform (3) and the top of the nacelle cover (2) of the wind turbine, due to the arrangement of the upper chord and the top of the nacelle cover (2) (e.g. Figure 2-4As shown), the height of the upper space varies, with the minimum height ranging from 170cm to 190cm. This design takes into account the average height of adult males and the space required for maintenance. Due to cost and transportation limitations, the total cabin volume cannot be increased arbitrarily. That is, the cabin height is fixed, so the height of the upper space (4) near the rear of the cabin is minimized to leave more usable space for the corresponding lower space (5).

[0053] The lower space (5) contains the gearbox lubrication and cooling system of the wind turbine, generator cooling system pipeline (6), cooling pump (7), radiator (8), yaw pinion (9) and yaw ring gear (10), power cable (11), communication cable (12), and hydraulic pipeline.

[0054] Similar to the upper space (4), the height of the lower space (5) is the distance between the horizontal platform (3) and the bottom of the nacelle cover (2) of the wind turbine. The maximum height of the lower space (5) is 10cm to 30cm greater than the height of the radiator (8). The radiator (8) is generally located near the rear of the nacelle. This is because the maximum height of the lower space (5) is located at the rear of the nacelle, and the radiator (8) is the tallest among the components in the lower space (5). Furthermore, the radiator (8) can be close enough to components that require air-liquid cooling heat exchange, such as the generator and gearbox.

[0055] Similarly, since the maximum height of the lower space (5) is located at the rear of the cabin, a hatch (13) is set at the rear of the horizontal platform (3) near the cabin. The upper space (4) and the lower space (5) can be accessed through the hatch (13).

[0056] The two side frames are connected to the base of the wind turbine, and the components placed on the platform in the nacelle and the gravity load of the nacelle cover (2) are transferred to the base through the nacelle frame (1).

[0057] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "back," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A layered cabin, characterized in that, The cabin includes a cabin frame (1), a cabin cover (2), and a horizontal platform (3). The cabin frame (1) consists of two side frames (1.1), multiple top members (1.2), bottom members (1.3), and tail members (1.4); The side frame (1.1) includes two non-parallel main chords and a plurality of support members (1.13), the support members (1.13) connecting the two main chords; The main chord near the bottom of the cabin is the lower main chord (1.11), which is horizontally positioned; the main chord near the top of the cabin is the upper main chord (1.12), which slopes downwards from the front of the cabin. The lower main chords (1.11) of the two side frames (1.1) are connected by the bottom member (1.3), and the upper main chords (1.12) of the two side frames (1.1) are connected by the top member (1.2); The cabin cover (2) is installed on the cabin frame (1) to form the interior space of the cabin; the bottom of the cabin cover (2) is located below the lower main chord (1.11); The horizontal platform (3) is set on the lower main chord (1.11) and bottom member (1.3) of the cabin frame (1); the horizontal platform (3) divides the cabin interior into an upper space (4) and a lower space (5).

2. The layered cabin according to claim 1, characterized in that, The horizontal platform (3) includes multiple plates laid on the lower main chord (1.11) and bottom members (1.3) of the cabin frame (1).

3. A layered cabin according to claim 1, characterized in that, The horizontal platform (3) is an incomplete structure, and no board is laid in the middle of the horizontal platform (3).

4. A layered cabin according to claim 1, characterized in that, The height of the upper space (4) is the distance between the top of the horizontal platform (3) and the top of the cabin cover (2), and the minimum height of the upper space (4) is 170cm to 190cm.

5. A layered cabin according to claim 1, characterized in that, The lower space (5) is equipped with a gearbox lubrication and cooling system for the wind turbine, generator cooling system pipeline (6), cooling pump (7), radiator (8), yaw pinion (9) and yaw ring gear (10), power cable (11), communication cable (12), and hydraulic pipeline.

6. A layered cabin according to claim 5, characterized in that, The height of the lower space (5) is the distance between the bottom of the horizontal platform (3) and the cabin cover (2), and the maximum height of the lower space (5) is 10cm to 30cm greater than the height of the radiator (8).

7. A layered cabin according to claim 1, characterized in that, The gearbox and generator of the wind turbine are located in the upper space (4) and the remaining part is located in the lower space (5).

8. A layered cabin according to claim 1, characterized in that, The two side frames (1.1) are connected to the base of the wind turbine.

9. A layered cabin according to claim 1, characterized in that, The horizontal platform (3) is provided with a hatch (13) near the rear of the cabin, through which the upper space (4) and the lower space (5) can be accessed.

10. A wind turbine generator set, characterized in that, Includes a layered cabin as described in any one of claims 1-9.

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