Wind power modular large mainframe base

Abstract

The application discloses a wind power modular large main machine base, which is formed by splicing a plurality of module units; at least two modules are formed by combining the module units, the modules are transported individually as a transport main body, or the modules are stacked and combined to form a transport main body for integral transportation. The base is designed as a modular structure, is particularly suitable for large main machine bases, can be integrally transported in a container mode, can be transported in multiple layers, and greatly improves transportation efficiency and reduces transportation cost.

Description

Technical Field

[0001] This invention relates to a wind turbine main unit nacelle, and more particularly to a modular large-scale wind turbine main unit base. Background Technology

[0002] Existing wind turbine nacelles mainly consist of a base, a nacelle cover, the main unit connected to the base, a yaw system, and a control cabinet. Due to the varying sizes of main units in different megawatts, larger main units require larger bases. Existing bases for smaller main units are relatively short and easy to transport; however, for larger main units, the bases are very long, and transportation typically involves semi-trailers with at least two or three tractors (such as forklifts) in front, connected by steel cables. This process of transporting one unit to the other is inefficient, as stopping even one unit renders the entire operation useless. This method is not only wasteful of vehicles, causing significant wear and tear and greatly reducing their lifespan (often requiring scrap after about two years), but the heavy bases also increase the risk of damaging roads during transport, significantly raising road repair costs. Therefore, this invention urgently needs to design a base suitable for large main units, capable of meeting the requirements of both sea and land transportation and improving transportation efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a modular large-scale wind power main unit base with high transportation efficiency, low transportation cost and convenient installation.

[0004] The technical solution of the present invention is: a modular large-scale wind power main unit base, wherein the base is formed by splicing multiple modular units; the modular units are combined to form at least two modules, and the modules are transported individually as the main body of transportation, or the modules are stacked and combined to form the main body of transportation for overall transportation.

[0005] Furthermore, the module is formed by arranging and splicing at least two module units along the width direction of the base.

[0006] Furthermore, the head of one module has a thickened structure, while the tail of the other module has a thinned structure. By inverting the head of one module onto the tail of another module, a flat transport body is formed; or transport bodies are stacked on top of this transport body to form a multi-layer transport system.

[0007] Furthermore, the multiple modular units include at least two first modular units and at least two second modular units; at least two first modular units are spliced ​​together to form a first module, and at least two second modular units are spliced ​​together to form a second module; the dimensions of the first module and the second module conform to container transport standards.

[0008] Furthermore, the first module unit comprises at least three segments from the tail to the head, wherein the tail segment is horizontal and connected to the second module unit; the middle segment slopes upward along the tail segment and forms an obtuse angle with the tail segment; and the head segment is a thickened structure that forms a step with the middle segment.

[0009] Furthermore, the second module unit includes at least two sections, namely a main section and a tail section. The length of the main section is greater than the length of the tail section, and the thickness of the tail section is less than that of the main section. The main section is connected to the tail section of the first module unit, and the tail section of the second module unit is designed as a groove structure with baffles on both sides. The thickened head structure of the first module unit can be inverted and placed into the groove of the tail section of the second module unit.

[0010] Furthermore, the structure of the first module unit is used to install the host, the host's bearing is installed on the head section of the first module, and the main shaft of the bearing is connected to the hub; the second module unit is used to install the control cabinet and other equipment.

[0011] Furthermore, when adjacent module units are connected, each module unit is provided with a mounting slot, which includes two mounting holes that are opened opposite each other on the top and bottom plates of the module unit; a group of connecting holes is provided on the connecting surface of adjacent module units, and bolts are screwed from the mounting slot of one module unit to the mounting slot of another module unit for fixing; or a manhole is provided at a position where the thickness space of the module unit is large, so that people can enter the cavity of the module unit for threaded connection.

[0012] Furthermore, each of the two modules has a connecting plate on its opposite side, and the connecting plate extends upward along the surface of each module. The extended part has threaded holes, so that the two modules are fixedly connected by bolts.

[0013] Furthermore, the inner cavity of the module unit is hollow, and the bottom surface of the base is provided with several weight-reducing holes; the bottom surface of the base is also provided with a yaw rotation seat.

[0014] Furthermore, the number of individual modules is preferably 4 to 8.

[0015] The beneficial effects of this invention are as follows: Firstly, by designing the base as a modular structure, it is particularly suitable for large host bases, allowing for overall transportation in a containerized manner and multi-layer transportation, greatly improving transportation efficiency and reducing transportation costs. Secondly, by designing the structure of the modules, the head of one module can be interlocked with the tail of another module, enabling the stacking of multiple bases, allowing for the simultaneous transportation of multiple bases in one shipment, significantly improving transportation efficiency. Furthermore, by designing the structure of each module, the base space can be fully utilized for the installation of various equipment, resulting in high space utilization and significantly improving weight reduction. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the base plate according to an embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows a partially enlarged structural schematic of the connecting plate in the embodiment shown. Figure 3 This is a three-dimensional schematic diagram of the structure of the base plate where the host and other components are placed, according to an embodiment of the present invention; Figure 4 yes Figure 3 Side view of the embodiment shown; Figure 5 This is a schematic diagram of the bottom structure of the base plate in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached diagram: 1. Base; 2. Main unit; 3. Hub; 4. Yaw rotating seat; 5. High voltage switchgear; 6. Transformer; 7. Converter; 11. First module; 12. Second module; 13. Weight reduction hole; 14. Connecting plate; 15. Reinforcing rib; 21. Gearbox; 22. Gear assembly; 23. Generator; 41. Support truss; 111. First module unit; 112. Angular reinforcement; 121. Second module unit; 122. Groove; 123. Mounting slot; 1111. Tail section; 1112. Middle section; 1113. Head section; 1211. Main body section. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown: A modular large-scale wind turbine base, wherein the base 1 is formed by splicing together multiple modular units.

[0020] Preferably, the base is formed by splicing six modular units, specifically including three first modular units 111 and three second modular units 121; the three first modular units are connected along their length to form a first module 11; the three second modular units are connected along their length to form a second module 12. The second module 12 has a horizontal structure with a thickened tail section, forming a Z-shape at the connection surfaces of adjacent second modular units. It also has side flanges on both sides of the tail section, and the remaining portion is thickened to form a groove 122. No equipment can be placed on the flat surface at the tail of the second module, thus reducing material usage and increasing weight. The first module is thickened at the end near the impeller (i.e., the head), forming an angled step to facilitate lifting the impeller during installation and prevent it from touching the tower during rotation. Additionally, an angled reinforcing member 112 is provided at the step to improve strength at that location. In this embodiment, by reducing the thickness of the tail of the second module unit and increasing the thickness of the head of the first module unit, the head of the first module unit can be inverted and placed in the groove of the tail of the opposite second module unit during transportation, so that the two together form a square body with a flat upper surface. It is also convenient to place other inverted modules on top of the two to form a multi-layer structure for simultaneous transportation.

[0021] like Figure 1 , Figures 3-5 As shown: In this embodiment, the first module unit 111 is divided into three sections from the tail to the head. The tail section 1111 is horizontal and connected to the second module unit. The middle section 1112 slopes upward along the tail section, forming an obtuse angle with the tail section. The head section 1113 is a thickened structure, forming a step with the middle section. The bottom surface of the head section slopes upward further along the bottom surface of the middle section, with an inclination angle of 4°~10°, preferably 6.6°. The head section and middle section of the first module unit are mainly used to install the main unit 2. The main unit 2 has a modular structure, which can be disassembled into a bearing seat, main shaft, main unit base, gearbox 21, generator 23, and gear assembly 22. By assembling the bearing seat, main unit base, generator, gear assembly, and gearbox into a whole, the main body of the main unit 2 is formed. The bearing seat of the main unit 2 is installed on the head section of the first module 11 so that the main shaft on the bearing seat can be connected to the hub 3, raising the wind turbine to prevent it from contacting the tower during movement. The gears and generators corresponding to the rear side of the bearing are mainly located in the middle section of the first module, while the tail section can be left empty to reserve space for future use.

[0022] In this embodiment, the second module unit 121 is divided into two sections from the tail to the head, namely, a main body section 1211 and a tail section. The length of the main body section 1211 is greater than the length of the tail section, and the thickness of the tail section is less than that of the main body section. The main body section is connected to the first module unit 111, and electrical equipment, control cabinets, etc., can be placed on the horizontal surface of the main body section of the second module. In this embodiment, a multi-layer structure is preferably set on the horizontal surface of the main body section of the second module, such as a two-story building. The bottom floor is used to place the high-voltage cabinet 5, transformer 6, etc., and the second floor is used to place the converter 7 or other equipment, etc. The top of the second floor is provided with a canopy. The main body section of the second module is flush with the tail section of the first module, both being flat horizontal surfaces.

[0023] In this embodiment, the bottom surface of the base 1 is provided with a yaw rotating seat 4, which rotates by connecting to the base body at the upper end of the tower. That is, the base can drive the wind turbine to chase the wind 360° under the rotation of the yaw rotating seat 4. The yaw rotating seat 4 is set on the bottom surface of the first module 11, specifically on the middle section 1112 and the tail section 1111. The yaw rotating seat 4 is threaded to the bottom surface of the base 1 by a support truss 41.

[0024] In this embodiment, the inner cavities of all six module units are hollow to achieve weight reduction. To further reduce the weight of the base, several spaced weight-reduction holes 13 are made on the bottom surface of the base 1.

[0025] In this embodiment, the connection between the three second module units 121 is as follows: each second module unit has a mounting slot 123. The mounting slot 123 includes two square holes opposite each other on the top and bottom plates of the module unit, forming a through-hole structure. This facilitates the tightening of bolts within the mounting slot and can also be used to install control cabinets or other equipment. Furthermore, if it is necessary to install the bottom connecting seat of the control cabinet or other equipment into the cavity of the module unit, it can also enter the cavity through the mounting slot. In other words, the mounting slot 123 in this embodiment can be used for the connection between adjacent second module units 121, and also for the connection of other equipment. Specifically, this embodiment provides four mounting slots on the main body section of each second module unit and two to three mounting slots arranged side-by-side on the tail section. When connecting adjacent second module units 121, a group of connecting holes is provided on the connecting surface of the adjacent module units. Bolts are screwed from the mounting slot of one module unit to the mounting slot of another module unit for fixation, making installation convenient and disassembly easy. Alternatively, pre-made nuts can be provided at the connecting holes of the module units to be connected, and bolts can be screwed into the pre-made nuts for fixation. In addition, the weight of the base can be further reduced by setting the mounting slot.

[0026] In this embodiment, the connection between the three first module units 111 can adopt the same connection structure as the second module unit, or it can be designed with other connection structures. For example, the head and middle sections of the first module unit are thicker than the tail section, and the height here is preferably designed to be more than one meter. A manhole can be provided on the middle first module unit, for example, on its head or middle section, so that a person can enter the inner cavity of the middle first module unit and bolt it to the other adjacent first module units. This eliminates the need to set the mounting groove as in the second module unit, greatly simplifying the processing.

[0027] like Figure 1 and Figure 2 As shown: In this embodiment, the connection between the first module 11 and the second module 12 is as follows: Each of the opposite sides of the first module 11 and the second module 12 is provided with a connecting plate 14, which extends upwards along the surface of each module. The extended portion has threaded holes, allowing the first module and the second module to be fixedly connected by bolts. To further improve the strength of the connection, multiple reinforcing ribs 15 arranged along the width direction of the module are provided between the connecting plate and each module, and each reinforcing rib has holes to facilitate weight reduction. The connecting plate and reinforcing ribs can be directly welded to the modules for transport. It is understood that manholes can also be provided on the connecting plate to facilitate personnel climbing from the first module unit into the second module unit.

[0028] In this embodiment, the first module is provided with multiple mounting holes for connecting the host. The mounting holes can be threaded holes, flange structures, or combinations of other structures, as long as they can fix the host.

[0029] The base 1 in this embodiment is mainly used for large-scale mainframes. Because large-scale mainframes are large, the base becomes too large and cannot meet container standards for transportation. By disassembling the base into multiple modular units, and connecting these modules to form a unit, the length and width dimensions of the unit meet container transportation standards. For example, in this embodiment, the length of the first module and the second module are both ≤12 meters, the width is about two meters, and the height is about two meters, which meets container transportation standards. By inverting the first module onto the second module, the main body of the transport is formed, which can meet the transportation standards of a 40-foot container. When transported by sea, multiple layers of the main body can be stacked at once, which means that more than two bases can be transported at the same time in one shipment, greatly improving transportation efficiency and reducing transportation costs.

[0030] In addition, during transportation, end frames are installed at both ends of the stacked transport unit, and corner brackets are installed at the four corners of the end frames to form a container structure for transport. Upon arrival at the site, the modules are simply bolted together using connecting plates, greatly improving installation speed.

[0031] It is understood that the number of module units in this invention can be designed according to the volume of the host. For example, for a host that transports more than 20MW, six module units or even more can be selected.

[0032] In summary, this invention, on the one hand, designs the base as a modular structure, which is particularly suitable for large host bases. It can be transported as a whole using a container model and can be transported in multiple layers, greatly improving transportation efficiency and reducing transportation costs. On the other hand, by designing the structure of the modules, the head of one module can be interlocked with the tail of another module to stack multiple bases, allowing multiple bases to be transported simultaneously in one shipment, significantly improving transportation efficiency. Furthermore, by designing the structure of each individual module, the base space can be fully utilized for the installation of various equipment, resulting in high space utilization and greatly improving weight reduction.

Claims

1. A modular large-scale wind turbine base, characterized in that, The base is formed by splicing together multiple modular units, including at least two first modular units and at least two second modular units. The at least two first modular units are spliced ​​together to form a first module, and the at least two second modular units are spliced ​​together to form a second module. The first module and the second module are transported separately as the main transport units, or stacked together to form a main transport unit for overall transport. The dimensions of the first module and the second module meet the container transport standards. The first module unit comprises at least three sections from the tail to the head, wherein the tail section is horizontal and connected to the second module unit; the middle section is inclined upward along the tail section and forms an obtuse angle with the tail section; the head section is a thickened structure and forms a step with the middle section. The second module unit includes at least two sections, namely a main section and a tail section. The length of the main section is greater than the length of the tail section, and the thickness of the tail section is less than the thickness of the main section. The main section is connected to the tail section of the first module unit. The tail section of the second module unit is designed as a groove structure with baffles on both sides. The thickened head structure of the first module unit can be overturned into the groove of the tail section of the second module unit. The first module unit is designed to install the host computer. The host computer's bearing is mounted on the head section of the first module. The main shaft of the bearing is connected to the hub. The second module unit is designed to install the control cabinet and other equipment. The module unit has a hollow interior cavity, and the bottom surface of the base has several weight-reducing holes. The bottom surface of the base is also provided with a yaw rotation seat.

2. The modular large-scale wind turbine base according to claim 1, characterized in that, The module is formed by arranging and splicing at least two individual modules along the width of the base.

3. The modular large-scale wind turbine base according to claim 1, characterized in that, One module has a thickened head structure, while the other module has a thinned tail structure. By inverting the head of one module onto the tail of another module, a flat transport body is formed; or transport bodies are stacked on top of this transport body to form a multi-layer transport system.

4. The modular large-scale wind turbine base according to claim 1, characterized in that, When adjacent modules are connected, each module has a mounting slot, which includes two mounting holes on the top and bottom plates of the module. A set of connecting holes is provided on the connecting surface of adjacent modules, and bolts are screwed from the mounting slot of one module to the mounting slot of another module for fixing. Alternatively, a manhole is provided at a location with a large thickness space in the module to allow people to enter the cavity of the module for threaded connection.

5. The modular large-scale wind turbine base according to claim 1, characterized in that, Each of the two modules has a connecting plate on its opposite side, and the connecting plate extends upward along the surface of each module. The extended part has threaded holes, so that the two modules are fixedly connected by bolts.

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