Assembly method of wind turbine generator

Abstract

The invention relates to a wind turbine generator assembly method which comprises the following steps: a preparation step: a first tower section, a second tower section and a splicing tool are provided, the splicing tool is mounted on a wharf corresponding to a floating foundation, and the splicing tool comprises a first end part and a second end part which have a height difference, the second end part is opposite to the first end part in the first direction and protrudes out of the outer edge of the wharf; the first tower section is assembled, specifically, the first tower section is installed on the floating foundation, and the first tower section and the floating foundation are integrally moved, so that the first tower section is at least partially opposite to the second end part in the height direction; and a second tower section assembling step: hoisting the second tower section to the first end part of the splicing tool, controlling the second tower section to move to the second end part from the first end part of the splicing tool, and assembling the second tower section to the first tower section so as to realize the assembly of the wind turbine generator. According to the assembling method of the wind turbine generator set, the performance requirement for the crane can be lowered, and the assembling cost of the wind turbine generator set is lowered.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to an assembly method of a wind turbine generator set. Background Art

[0002] As for offshore wind turbines, with their continuous development, the next step for offshore wind power will be to gradually move to deep sea areas that are farther and farther away from the shore and deeper and deeper in water. For deep-sea offshore wind turbines, the foundation form will use a floating foundation.

[0003] The existing method of assembling offshore units is mainly to use a crane to lift the entire wind turbine generator set to a floating foundation for installation. However, as offshore wind turbine generator sets gradually develop towards the deep sea, the weight and height of offshore wind turbine generator sets are also gradually increasing. Existing cranes and docks are difficult to meet the overall lifting requirements of large-capacity generator sets. Summary of the invention

[0004] The present application provides a method for assembling a wind turbine set, which can reduce the performance requirements for a crane, so that only a smaller type of crane is needed to meet the installation requirements of the wind turbine set, thereby significantly reducing the construction cost of a large-capacity wind turbine set.

[0005] On the one hand, according to an embodiment of the present application, a method for assembling a wind turbine is proposed, including: a preparation step, providing a first tower section, a second tower section and a splicing tool, installing the splicing tool on a dock corresponding to a floating foundation, the splicing tool including a first end and a second end with a height difference, the second end being opposite to the first end in a first direction and protruding from an outer edge of the dock; an assembling step of the first tower section, installing the first tower section on the floating foundation, and moving the first tower section and the floating foundation as a whole so that the first tower section is at least partially opposite to the second end in the height direction; an assembling step of the second tower section, hoisting the second tower section to the first end of the splicing tool, controlling the second tower section to move from the first end of the splicing tool to the second end and assembling it to the first tower section, so as to realize the assembly of the wind turbine.

[0006] According to one aspect of an embodiment of the present application, in the preparation step, the splicing tooling includes a support and a lifting platform and a moving platform respectively arranged on the support and with intersecting moving paths, the lifting platform is located at the first end, and the moving platform includes a bearing mechanism and a limiting mechanism arranged on the bearing mechanism; the step of assembling the second tower section specifically includes: a hoisting step, moving the moving platform to the top of the lifting platform in the height direction, hoisting the second tower section to the first end of the splicing tooling and supporting it on the lifting platform; a lifting step, controlling the lifting platform to drive the second tower section to rise in the height direction; a moving step, fixing the second tower section by the limiting mechanism, driving the bearing mechanism to move in the first direction, and after the second tower section moves to the second end, assembling the second tower section to the first tower section, so as to realize the assembly of the wind turbine.

[0007] According to one aspect of an embodiment of the present application, in the preparation step, the supporting mechanism is provided with a docking hole; the hoisting step includes: moving the mobile platform to the top of the lifting platform along the height direction, piercing the docking hole in the second tower segment and hoisting it to the first end of the splicing tooling, and supporting the second tower segment on the lifting platform.

[0008] According to one aspect of an embodiment of the present application, in the preparation step, the limiting mechanism includes a clamping assembly, and the clamping assembly at least partially extends into the docking hole; the step of fixing the second tower segment by the limiting mechanism includes: clamping the second tower segment by the clamping assembly on the moving platform.

[0009] According to one aspect of an embodiment of the present application, in the preparation step, the splicing tooling also includes a controller and a distance sensor, and the distance sensor is arranged on the floating foundation and / or the second end of the splicing tooling; the lifting step specifically includes: collecting distance data along the height direction between the floating foundation and the second end of the splicing tooling through the distance sensor, and the controller controls the lifting platform to drive the second tower section to rise to a preset height according to the distance data.

[0010] According to one aspect of an embodiment of the present application, in the preparation step, the limiting mechanism includes a connecting flange, which is arranged on a side surface of the supporting mechanism facing the lifting platform along the height direction; the step of fixing the second tower section by the limiting mechanism includes: connecting the second tower section to the connecting flange of the supporting mechanism.

[0011] According to one aspect of an embodiment of the present application, in the preparation step, the splicing tooling also includes a lifting assembly arranged at the second end; the step of assembling the second tower segment onto the first tower segment includes: hoisting the second tower segment by the lifting assembly to detach the second tower segment from the moving platform; controlling the lifting assembly to drive the second tower segment to move in the height direction, and making the second tower segment connect with the first tower segment.

[0012] According to one aspect of an embodiment of the present application, in the preparation step, the lifting assembly is rotated along its own axis and connected to the support, and the axis is parallel to the height direction; before the step of hoisting the second tower section by the lifting assembly, it also includes: controlling the lifting assembly to rotate along its own axis to rotate the lifting assembly to correspond to the hoisting point of the second tower section.

[0013] According to one aspect of an embodiment of the present application, in the preparation step, the bearing mechanism includes more than two bearing components and connecting parts, the bearing components are movably connected to the support along a first direction, and each bearing component is provided with an arc portion; before the lifting step, it also includes: splicing the arc portions of the more than two bearing components to each other, and assembling them through connecting parts to form a bearing mechanism with a docking hole; after the step of assembling the second tower section, it also includes: removing the connecting parts to detach the wind turbine from the bearing mechanism.

[0014] According to one aspect of an embodiment of the present application, in the preparation step, each bearing assembly includes a bearing part and a splicing part, the position of the splicing part on the bearing part is adjustable, and the arc portion is arranged on the splicing part; the step of splicing the arc portions of two or more bearing assemblies to each other includes: adjusting the position of the splicing part relative to the bearing part so that the aperture of the docking hole formed by the splicing is adapted to the cylinder diameter of the second tower section.

[0015] According to one aspect of an embodiment of the present application, in the preparation step, the second tower section includes a second tower barrel section, a machine head and more than two blades; the step of assembling the second tower section specifically includes: hoisting the second tower barrel section to the first end of the splicing tooling, installing the machine head and part of the blades on the second tower barrel section to form a preformed second tower section, and some of the blades can be rotated to the same side of the machine head along the height direction; controlling the preformed second tower section to move from the first end of the splicing tooling to the second end and assemble it to the first tower section to realize the assembly of the wind turbine; moving the wind turbine out of the splicing tooling, and installing another part of the blades on the other side of the machine head along the height direction.

[0016] The wind turbine assembly method provided in the embodiment of the present application divides the wind turbine into sections to form a first tower section and a second tower section to be assembled on a floating foundation respectively. The first tower section located in the lower section can be directly hoisted to the floating foundation by a crane, and the second tower section located in the upper section can be hoisted to a splicing tool by a crane, and then the splicing tool transports the second tower section to the floating foundation to be assembled with the first tower section. Therefore, the assembly method in the present application can splice the tooling to realize the transportation and assembly of the second tower section located in the upper section, thereby reducing the performance requirements for the crane, so that only a smaller type of crane is needed to meet the installation requirements of the wind turbine, greatly reducing the construction cost of large-capacity wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 is a flow chart of a blade assembly method according to an embodiment of the present application;

[0019] Figure 2 It is a structural schematic diagram of the preparation steps of an embodiment of the present application;

[0020] Figure 3 This is a structural schematic diagram of hoisting the first tower section in one embodiment of the present application;

[0021] Figure 4 This is a structural schematic diagram of a first tower section assembled on a floating foundation according to an embodiment of the present application;

[0022] Figure 5is a structural schematic diagram of a mobile first tower section and a floating foundation in one embodiment of the present application;

[0023] Figure 6 This is a structural schematic diagram of hoisting the second tower section in one embodiment of the present application;

[0024] Figure 7 is a structural schematic diagram of a mobile second tower section according to an embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of the structure of assembling the first tower section and the second tower section according to an embodiment of the present application.

[0026] Fig. 9 This is a structural schematic diagram of a splicing tool at one angle according to an embodiment of the present application;

[0027] Fig.10 yes Fig. 9 The enlarged view of point A in the middle;

[0028] Fig.11 This is a structural schematic diagram of a splicing tooling device according to an embodiment of the present application from another angle;

[0029] Fig.12 yes Fig.11 The enlarged view of point B in the middle;

[0030] Fig.13 This is a structural schematic diagram of a splicing tool at one angle according to an embodiment of the present application;

[0031] Fig.14 It is a structural schematic diagram of a second tower section installed on a splicing tooling according to an embodiment of the present application;

[0032] Fig.15 This is a structural schematic diagram of a splicing tool at one angle according to another embodiment of the present application;

[0033] Fig.16 is a structural schematic diagram of a splicing tool from another angle of another embodiment of the present application;

[0034] Fig.17 yes Fig.16 Enlarged view of point C in the middle;

[0035] Fig.18 is a structural schematic diagram of another embodiment of the present application in which the second tower section is installed on a splicing tooling;

[0036] Fig.19 yes Fig.18 The enlarged view of point D in the middle;

[0037] Fig. 20 is a structural schematic diagram of a splicing tool from another angle of another embodiment of the present application;

[0038] Fig.21 yes Fig. 20 Enlarged view of point E in the middle;

[0039] Fig. 22 This is a structural schematic diagram of hoisting the second tower section in one embodiment of the present application;

[0040] Fig.23 is a structural schematic diagram of hoisting the second tower section of another embodiment of the present application;

[0041] Fig.24 It is a schematic diagram of the assembly of a wind turbine generator set according to an embodiment of the present application.

[0042] In the attached figure:

[0043] 10-first tower section; 110 second adapter block; 120-guide hole; 20-second tower section; 210-second tower barrel section; 220-head; 230-blade; 240-second adapter block; 250-guide pin; 30-joining tooling; 40-floating foundation; 50-pier; 60-crane;

[0044] 1-support; 11-column; 2-lifting platform; 3-moving platform; 31-bearing mechanism; 311-bearing assembly; 3111-bearing member; 3112-joining member; 312-connecting member; 32-limiting mechanism; 321-clamping assembly; 322-connecting flange; 33-guide assembly; 4-first distance sensor; 5-second distance sensor; 6-lifting assembly; 61-winch; 62-wire rope;

[0045] S1 - first end; S2 - second end; X - first direction; Z - height direction.

[0046] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0047] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0048] The directional words appearing in the following description are all directions shown in the figures, and do not limit the assembly method of the wind turbine of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] In order to better understand this application, Figures 1 to 24 The assembling method of a wind turbine generator set according to an embodiment of the present application is described in detail.

[0050] Please also read Figures 1 to 8 The present invention provides a method for assembling a wind turbine generator set, and the method comprises the following steps:

[0051] Preparation step: providing a first tower section 10, a second tower section 20 and a splicing tool 30, installing the splicing tool 30 on a dock 50 corresponding to the floating foundation 40, wherein the splicing tool 30 comprises a first end S1 and a second end S2 with a height difference, wherein the second end S2 is opposite to the first end S1 in the first direction X and protrudes from an outer edge of the dock 50;

[0052] The step of assembling the first tower section 10 is to install the first tower section 10 on the floating foundation 40, and to move the first tower section 10 and the floating foundation 40 as a whole, so that the first tower section 10 is at least partially arranged opposite to the second end S2 along the height direction Z;

[0053] The step of assembling the second tower segment 20 is to lift the second tower segment 20 to the first end S1 of the splicing tool 30, control the second tower segment 20 to move from the first end S1 to the second end S2 of the splicing tool 30 and assemble it to the first tower segment 10 to realize the assembly of the wind turbine.

[0054] The assembly method implemented in the present application divides the wind turbine into sections to form a first tower section 10 and a second tower section 20 to be assembled on a floating foundation 40 respectively. The first tower section 10 located in the lower section can be directly hoisted onto the floating foundation 40 by a crane 60, and the second tower section 20 located in the upper section can be hoisted to a splicing fixture 30 by a crane 60, and then the splicing fixture 30 transports the second tower section 20 to the floating foundation 40 to be assembled with the first tower section 10. Therefore, the assembly method in the present application can realize the transportation and assembly of the second tower section 20 located in the upper section by splicing fixtures 30, thereby reducing the performance requirements for the crane 60, so that only a smaller model of crane 60 is needed to meet the installation requirements of the wind turbine, greatly reducing the construction cost of large-capacity wind turbines.

[0055] Compared with directly hoisting the second tower section 20 to the floating foundation 40 by the crane 60, when the second tower section 20 is hoisted to the splicing fixture 30 by the crane 60 in the present application, on the one hand, the crane 60 can be directly moved to the vicinity of the splicing fixture 30 to hoist the tower section, thereby shortening the operating radius of the crane 60 and reducing the lifting weight requirement of the crane 60. On the other hand, the crane 60 only needs to hoist the second tower section 20 to the first end S1 of the splicing fixture 30, thereby reducing the lifting height requirement of the crane 60. Based on the above conditions, only a smaller model of crane 60 needs to be selected to realize the assembly of the wind turbine, thereby greatly reducing the construction cost of large-capacity wind turbines.

[0056] Furthermore, since the installation requirements of the wind turbine can be met by using a smaller crane 60, there is no need to perform additional reconstruction and reinforcement work on the foundation of the dock 50, thereby further reducing the construction cost of large-capacity wind turbines and facilitating their promotion and use.

[0057] It is understandable that when the wind turbine is divided into the first tower section 10 and the second tower section 20 for assembly, the first tower section 10 may consist of one tower section or multiple tower sections, and similarly, the second tower section 20 may consist of one tower section or multiple tower sections, and the number of tower sections of the first tower section 10 may be the same as or different from the number of tower sections of the second tower section 20. In addition, the assembly method of the wind turbine in the embodiment of the present application can be used for the assembly of large-capacity wind turbines or small-capacity wind turbines, and it should not be understood as limiting the scope of protection of the present application.

[0058] Optionally, the crane 60 includes but is not limited to crawler crane, truck crane, gantry crane, mast crane and other forms, and the floating foundation 40 includes but is not limited to single column 11, three columns 11, damping pool type and other forms.

[0059] For ease of description, the following Figures 2 to 8 The specific implementation method of each step in the assembly method of the embodiment of the present application is described.

[0060] Figure 2 A structural schematic diagram of the preparation steps in an embodiment of the present application is shown.

[0061] See also Figure 2 When offshore construction is required, the splicing tool 30 can be installed on the ground of the dock 50. The splicing tool 30 can be set as an existing high-altitude transportation device, such as an oblique high-altitude transportation device, or a transportation device for other high-altitude work projects, as long as the second end S2 of the splicing tool 30 can be protruded from the outer edge of the dock 50.

[0062] Figures 3 to 5A structural schematic diagram showing the steps of assembling the first tower section 10 in an embodiment of the present application is shown.

[0063] See also Figure 3 and Figure 4 , the first tower section 10 can be installed on the floating foundation 40 by the crane 60. During the hoisting, the crane 60 can be first moved to the outer edge of the dock 50, and then the floating foundation 40 can be moved to the front of the crane 60, and the mounting flange surface side of the floating foundation 40 is arranged close to the outer edge of the dock 50, and then the first tower section 10 can be hoisted to the mounting flange surface of the floating foundation 40 by the crane 60.

[0064] See also Figure 5 After the first tower section 10 is installed on the mounting flange surface of the floating foundation, the floating foundation and the first tower section 10 can be moved as a whole to the second end S2 of the splicing tooling 30, and the first tower section 10 is located directly below the second end S2.

[0065] Figures 6 to 8 A structural schematic diagram showing the steps of assembling the second tower section 20 in an embodiment of the present application is shown.

[0066] See also Figures 6 to 8 The second tower segment 20 can be hoisted to the first end S1 of the splicing fixture 30 by the crane 60, and then the second tower segment 20 can be moved from the first end S1 to the second end S2 by the splicing fixture 30 to perform docking and assembly of the first tower segment 10 and the second tower segment 20.

[0067] See also Figures 9 to 14 The steps of assembling the second tower section 20 in the embodiment of the present application will be described in detail below in conjunction with a splicing tool 30 in a specific embodiment.

[0068] See also Fig. 9 In some optional embodiments, in the preparation step, the splicing tool 30 includes a support 1 and a lifting platform 2 and a moving platform 3 respectively arranged on the support 1 and having intersecting moving paths, the lifting platform 2 is located at the first end S1, and the moving platform 3 includes a bearing mechanism 31 and a limiting mechanism 32 arranged on the bearing mechanism 31. The step of assembling the second tower section 20 specifically includes:

[0069] Hoisting step: moving the mobile platform 3 to above the lifting platform 2 along the height direction Z, hoisting the second tower section 20 to the first end S1 of the splicing tool 30 and supporting it on the lifting platform 2;

[0070] A lifting step, controlling the lifting platform 2 to drive the second tower section 20 to rise along the height direction Z;

[0071] In the moving step, the second tower section 20 is fixed by the limiting mechanism 32, the supporting mechanism 31 is driven to move along the first direction X, and after the second tower section 20 moves to the second end S2, the second tower section 20 is assembled to the first tower section 10 to realize the assembly of the wind turbine.

[0072] That is, the splicing tooling 30 may specifically include a lifting platform 2 and a moving platform 3 whose moving paths intersect. After the second tower section 20 is hoisted to the first end S1 of the splicing tooling 30, the lifting platform 2 is used to drive the second tower section 20 to rise to a preset height along the height direction Z, and then the moving platform 3 is used to move the second tower section 20 along the first direction X to the second end S2, so as to realize the alignment installation of the tower section and the floating foundation 40.

[0073] Optionally, the lifting platform 2 can be driven to rise by means of an auxiliary crane, a gear rack, a motor screw, etc., so that the second tower section 20 can be lifted to a preset height by the lifting platform 2. In addition, the moving platform 3 can be driven to move along the first direction X by means of a pulley, a gear rack, a motor screw, etc., so that the second tower section 20 can be moved to the second end S2 by the moving platform 3.

[0074] In addition, a mounting flange may be provided on the lifting platform 2, so that when the second tower segment 20 is hoisted to the first end S1 of the splicing tooling 30, the second tower segment 20 can be fixed on the lifting platform 2 through the mounting flange to ensure that the lifting platform 2 can drive the second tower segment 20 to rise more stably.

[0075] See also Fig. 9 and Fig.10 To further ensure the stability of the second tower section 20 during the ascent, in some optional embodiments, in the preparation step, the bearing mechanism 31 is provided with a docking hole, and the hoisting step includes:

[0076] The hoisting step includes: moving the movable platform 3 to above the lifting platform 2 along the height direction Z, drilling the second tower section 20 with docking holes and hoisting it to the first end S1 of the splicing tool 30, and supporting the second tower section 20 on the lifting platform 2.

[0077] By providing a docking hole on the bearing mechanism 31, when the second tower section 20 is driven to rise by the lifting platform 2, the second tower section 20 can be inserted into the docking hole of the bearing mechanism 31, so that during the rising process of the second tower section 20, the stability of the rising of the second tower section 20 can be ensured by the docking hole. Optionally, the docking hole can be larger than the maximum cylinder diameter of the second tower section 20, so as to avoid the docking hole interfering with the second tower section 20 during the rising process of the second tower section 20.

[0078] It can be understood that when a docking hole is set on the supporting mechanism 31, the limiting mechanism 32 fixes the second tower segment 20 in the docking hole. Therefore, after the supporting mechanism 31 is moved to the second end S2 to dock the second tower segment 20 with the first tower segment 10, the second tower segment 20 needs to be detached from the docking hole of the supporting mechanism 31.

[0079] See also Fig.10 In some optional embodiments, in the preparation step, the bearing mechanism 31 includes more than two bearing components 311 and a connecting member 312, the bearing components 311 are movably connected to the support 1 along the first direction X, and each bearing component 311 is provided with an arc portion;

[0080] Before the lifting step, the method further includes: splicing the arc-shaped parts of two or more bearing assemblies 311 to each other, and assembling them through the connecting piece 312 to form a bearing mechanism 31 with a docking hole;

[0081] After the step of assembling the second tower section 20 , the method further includes: removing the connecting member 312 to separate the wind turbine generator set from the supporting mechanism 31 .

[0082] By configuring the supporting mechanism 31 to include more than two supporting components 311 , after docking the second tower section 20 with the first tower section 10 , the connecting piece 312 can be removed to allow the more than two supporting components 311 to be separately configured, thereby allowing the wind turbine to be withdrawn from the splicing tooling 30 .

[0083] Optionally, the docking areas of two adjacent bearing assemblies 311 may each be provided with a fixing block, the fixing blocks are provided with connecting holes, and the connecting members 312 may be provided as long bolts, which are sequentially passed through the connecting holes on the two fixing blocks to splice the two adjacent bearing assemblies 311. After the second tower section 20 is installed on the first tower section 10, the bearing assemblies 311 can be separated from each other by removing the long bolts.

[0084] See also Fig.10 In some optional embodiments, in the preparation step, each bearing assembly 311 includes a bearing member 3111 and a splicing member 3112, the position of the splicing member 3112 on the bearing member 3111 is adjustable, and the arc portion is disposed on the splicing member 3112;

[0085] The step of splicing the arc-shaped portions of two or more bearing assemblies 311 to each other includes: adjusting the position of the splicing member 3112 relative to the bearing member 3111 so that the diameter of the docking hole formed by the splicing matches the cylinder diameter of the second tower section 20 .

[0086] By setting the bearing assembly 311 as a bearing part 3111 and a splicing part 3112, the position relationship of the splicing part 3112 relative to the bearing part 3111 can be adjusted according to the diameter of the second tower section 20 to be installed, thereby forming a docking hole with a preset aperture, so as to meet the installation requirements of wind turbines of different models, avoid additional modification costs of the splicing tooling 30 due to the installation of wind turbines of different models, and improve applicability.

[0087] Specifically, after the second tower section 20 is hoisted to the lifting platform 2 by the crane 60 and before the lifting step, the position of the splicing piece 3112 relative to the bearing member 3111 can be adjusted. In addition, after the position of the splicing piece 3112 relative to the bearing member 3111 is adjusted, the position of the splicing piece 3112 can be fixed by the connecting piece 312 to form a docking hole with a preset aperture corresponding to the corresponding second tower section 20, so as to better match the second tower section 20.

[0088] In some optional embodiments, in the preparation step, the mobile platform 3 further includes a guide component 33, one end of the guide component 33 is connected to the bearing mechanism 31, and the other end is protruded toward the docking hole, and the length of the guide component 33 itself is adjustable. Since the aperture of the docking hole is larger than the maximum diameter of the second tower section 20, by providing the guide component 33, in the process of the lifting platform 2 driving the second tower section 20 to move along the height direction Z, the guide component 33 can be used as a guide, thereby further ensuring the reliability of the second tower section 20 moving along the height direction Z.

[0089] Optionally, a small oil cylinder may be provided in the guide assembly 33, and a roller may be provided at the protruding end of the guide assembly 33, wherein a pressure sensor may also be provided on the guide assembly 33 for sensing the force between the roller and the second tower section 20, thereby ensuring that during the process of the second tower section 20 rising along the height direction Z, the small oil cylinder can push the roller to contact the surface of the second tower section 20, thereby ensuring that the second tower section 20 can move safely and stably.

[0090] See also Figures 10 to 12 In some optional embodiments, in the preparation step, the limiting mechanism 32 includes a clamping assembly 321, and the clamping assembly 321 at least partially extends into the docking hole;

[0091] The step of fixing the second tower segment 20 by means of the limiting mechanism 32 includes: clamping the second tower segment 20 by means of the clamping assembly 321 on the moving platform 3 .

[0092] That is, the limiting mechanism 32 can be configured as a clamping assembly 321 to provide sufficient clamping force through the clamping assembly 321 to ensure that when the moving platform 3 drives the second tower segment 20 to move along the first direction X, the second tower segment 20 will not fall off the moving platform 3.

[0093] Optionally, a pressure sensor may be provided on the clamping assembly 321 to provide real-time feedback of the force exerted by the clamping assembly 321 on the second tower section 20 through the pressure sensor. When the clamping force generated by the clamping assembly 321 reaches the designed input, the second tower section 20 is driven to move along the first direction X through the moving platform 3.

[0094] Among them, the number of clamping components 321 can be set to more than two, and the more than two clamping components 321 are arranged on both sides of the supporting mechanism 31 along the height direction Z. By arranging the clamping components 321 on the surface of the supporting mechanism 31 along the height direction Z, the clamping force of the clamping components 321 on the second tower section 20 can be further increased to ensure the stable transportation of the tower section 20.

[0095] Optionally, the clamping assembly 321 can be configured as a clamping block abutting against the surface of the second tower section 20, or can be configured as a clamping arm arranged in pairs. When there are more than two clamping assemblies 321, the specific structures of the more than two clamping assemblies 321 can be the same or different, that is, they can achieve stable clamping of the second tower section 20. In addition, pressure sensors can be provided on the more than two clamping assemblies 321 to provide real-time feedback of the force exerted by each clamping assembly 321 on the second tower section 20 through the pressure sensors. When the clamping force generated by each clamping assembly 321 reaches the design input, the second tower section 20 is driven to move along the first direction X through the moving platform 3 to ensure stable transportation of the tower section 20.

[0096] It is understandable that when the second tower section 20 is moved to the second end S2 by the moving platform 3, the second tower section 20 can be docked with the first tower section 10. However, due to the influence of the tidal difference, the distance from the floating foundation 40 to the second end S2 of the splicing tooling 30 along the height direction Z is not always constant.

[0097] See also Fig.13 and Fig.14 In some optional embodiments, in the preparation step, the splicing tool 30 further includes a controller and a distance sensor, and the distance sensor is disposed at the floating foundation 40 and / or the second end S2 of the splicing tool 30;

[0098] The lifting step specifically includes: collecting distance data along the height direction Z between the floating foundation 40 and the second end S2 of the splicing tooling 30 through a distance sensor, and the controller controls the lifting platform 2 to drive the second tower section 20 to rise to a preset height according to the distance data.

[0099] That is, by setting a distance sensor, the distance data along the height direction Z between the second end S2 of the splicing tooling 30 and the floating foundation 40 can be collected in real time, so as to control the rising height of the lifting platform 2 to ensure that when the second tower section 20 is transported to the second end S2 by the mobile platform 3, the second tower section 20 can be directly docked on the floating foundation 40.

[0100] It is understandable that, since each low tide stage lasts for 2 to 3 hours, the transportation of the second tower section 20 can be carried out during the low tide stage.

[0101] Optionally, distance sensors may be provided on both the floating foundation 40 and the lifting platform 2. For ease of description, the distance sensor provided on the floating foundation 40 is defined as the first distance sensor 4, and the sensor provided on the lifting platform 2 is defined as the second distance sensor 5. During actual installation, the first distance sensor 4 may be used to detect the first distance data between the floating foundation 40 and the second end S2 of the splicing tooling 30 along the height direction Z, and the first distance data may be fed back to the controller. The controller may obtain the value required by the second distance sensor 5 by converting the data such as the height of the first tower section 10 and the size of the splicing tooling 30. Thus, in the process of driving the lifting platform 2 to rise by the driving unit, the second distance sensor 5 may output the second distance data in real time, and feed the second distance data back to the controller. When the controller detects that the second distance data is consistent with the value required by the second distance sensor 5 obtained by the conversion in the controller, the controller may send a stop command signal to the driving unit of the lifting platform 2, thereby controlling the lifting platform 2 to stop at a preset height. At this time, after the second tower section 20 is transferred to the mobile platform 3 by the clamping assembly 321, the second tower section 20 can correspond to the first tower section 10, thereby realizing the installation of the offshore wind turbine.

[0102] See also Figures 15 to 21 The steps of assembling the second tower section 20 in the embodiment of the present application will be described in detail below in conjunction with the splicing tool 30 in another specific embodiment.

[0103] See also Figures 15 to 17 In some optional embodiments, in the preparation step, the limiting mechanism 32 includes a connecting flange 322, and the connecting flange 322 is arranged on a side surface of the supporting mechanism 31 facing the lifting platform 2 along the height direction Z; the step of fixing the second tower section 20 by the limiting mechanism 32 includes: connecting the second tower section 20 to the connecting flange 322 of the supporting mechanism 31.

[0104] The main difference from the splicing tooling 30 in the previous embodiment is that the limiting mechanism 32 in the embodiment of the present application can be set as a connecting flange 322. When the second tower section 20 is lifted to the lower surface of the mobile platform 3 by the lifting platform 2, the second tower section 20 can be connected to the connecting flange 322 of the supporting mechanism 31 to transfer the second tower section 20 from the lifting platform 2 to the mobile platform 3.

[0105] Optionally, an additional outer flange may be provided on the tower wall below the second tower section 20, and a first adapter block 240 is connected to the outer flange by bolts. A plurality of bolt holes are provided on the first adapter block 240 at circumferential intervals, so that when the second tower section 20 is lifted to the top by the lifting platform 2, the second tower section 20 can be fixed to the mobile platform 3 by passing bolts through the bolt holes on the first adapter block 240 and the bolt holes on the connecting flange 322.

[0106] Among them, a guide pin 250 can also be provided on the first adapter block 240 to cooperate with the lifting platform 2 to ensure the position of the first adapter block 240, so that when the second tower section 20 is lifted to the top by the lifting platform 2, the bolt holes on the first adapter block 240 can correspond one by one to the bolt holes on the connecting flange 322, which is more convenient for docking.

[0107] It is understandable that, while the limiting mechanism 32 is provided as a connecting flange 322 , the supporting mechanism 31 may also be provided with a clamping assembly 321 , so as to further ensure the fixing effect of the second tower section 20 while being connected through the connecting flange 322 .

[0108] See also Figures 18 to 21 It can be understood that, since the second tower section 20 is fixed on the mobile platform 3 through the connecting flange 322, in this case, the lifting height of the lifting platform 2 is fixed. In this regard, in order to ensure the docking of the second tower section 20 and the first tower section 10, in some optional embodiments, in the preparation step, the splicing tool 30 further includes a lifting component 6 arranged at the second end S2;

[0109] The step of assembling the second tower section 20 onto the first tower section 10 comprises:

[0110] The second tower section 20 is hoisted by the lifting assembly 6 so as to be detached from the moving platform 3;

[0111] The lifting assembly 6 is controlled to drive the second tower section 20 to move along the height direction Z, and the second tower section 20 is connected to the first tower section 10 .

[0112] By setting up the lifting assembly 6, when the second tower section 20 moves to the second end S2, the second tower section 20 can be lifted by the lifting assembly 6 to adjust the position of the second tower section 20 along the height direction Z, so that the second tower section 20 can be lifted to the first tower section 10 along the height direction Z.

[0113] Optionally, the lifting assembly 6 may include a winch 61 and a wire rope 62 wound on the winch 61, so that when the second tower section 20 moves to the second end S2, the wire rope 62 can be connected to the first adapter block 240 of the second tower section 20. At this time, the bolts on the connecting flange 322 between the first adapter block 240 and the movable platform 3 can be removed, so that the second tower section 20 is detached from the movable platform 3 and hoisted to the second end S2 by the lifting assembly 6, and then the wire rope 62 is driven to be reeled by the winch 61 to lift the second tower section 20 to the first tower section 10 along the height direction Z.

[0114] Furthermore, an outer flange may be additionally provided on the tower wall above the first tower section 10, and a second adapter block 110 is connected to the outer flange by bolts, and a plurality of guide holes 120 are provided on the second adapter block 110 at intervals along the circumferential direction, so that when the second tower section 20 is hoisted to the first tower section 10 along the height direction Z by the lifting assembly 6, the guide pin 250 on the second tower section 20 can be aligned with the guide hole 120 on the first tower section 10, so that the second tower section 20 can be more easily docked on the first tower section 10. After the second tower section 20 and the first tower section 10 are aligned and assembled, the first adapter block 240 and the second adapter block 110 can be removed.

[0115] In some optional embodiments, in the preparation step, the lifting assembly 6 is connected to the support 1 by rotation along its own axis, and the axis is parallel to the height direction Z;

[0116] Before the step of hoisting the second tower section 20 by the lifting assembly 6 , the method further includes: controlling the lifting assembly 6 to rotate along its own axis to rotate the lifting assembly 6 to correspond to the hoisting point of the second tower section 20 .

[0117] For example, the lifting assembly 6 can be set on the column 11, and the column 11 is rotatably connected to the second end S2 of the splicing tooling 30, so that the position of the wire rope 62 relative to the second tower section 20 can be adjusted by driving the column 11 to rotate around its own axis, thereby making it easier to connect the wire rope 62 to the lifting point of the second tower section 20.

[0118] See also Fig. 22 When the wind turbine assembly is divided into the first tower section 10 and the second tower section 20 , the second tower section 20 may further include a head 220 and blades 230 .

[0119] Therefore, in order to facilitate the installation of the second tower section 20, in some optional embodiments, in the preparation step, the second tower section 20 includes a second tower barrel section 210, a head 220 and more than two blades 230, and the step of assembling the second tower section 20 specifically includes:

[0120] The second tower section 210 is hoisted to the first end S1 of the splicing tool 30, and the head 220 and some blades 230 are installed on the second tower section 210 to form a preformed second tower section 20, and some blades 230 can be rotated to the same side of the head 220 along the height direction Z;

[0121] Control the preformed second tower segment 20 to move from the first end S1 of the splicing tool 30 to the second end S2 and assemble it onto the first tower segment 10 to achieve the assembly of the wind turbine generator set;

[0122] The wind turbine set is removed from the assembly tool 30 , and another portion of blades 230 is installed on the other side of the head 220 along the height direction Z.

[0123] See also Fig. 22 and Fig.23 When installing the blade 230, the blade 230 can be installed by using a single crane 60 or by using two cranes 60 and two vehicles for lifting.

[0124] It is understandable that in some other embodiments, the nose 220 and some blades 230 may be installed on the second tower section 210 in the preparation step to form a preformed second tower section 20, so that the preformed second tower section 20 can be directly lifted to the first end S1 of the splicing tooling 30.

[0125] See also Fig.24 , after the wind turbine set is removed from the second end S2 of the splicing fixture 30, another part of the blades 230 can be installed on the other side of the head 220 along the height direction Z by the crane 60. During installation, the blades 230 can be rotated to a vertical downward state, and then the blades 230 can be installed on the other side of the head 220 by the crane 60, so that the requirements for the lifting height and weight of the crane 60 for the lifting of the blades 230 can be further reduced.

[0126] For example, when the wind turbine includes three blades 230, only two blades 230 can be installed first, and the two blades 230 are arranged in a rabbit ear shape and rotated to the upper side of the head 220 along the height direction Z, that is, the angle between the two blades 230 is 120°. After the wind turbine is removed from the splicing tooling 30, the remaining blade 230 is rotated to a vertical downward state and then installed on the head 220, thereby realizing the assembly of the wind turbine.

[0127] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for assembling a wind turbine generator set, characterized in that: include: A preparation step, providing a first tower section (10), a second tower section (20) and a splicing tool (30), installing the splicing tool (30) on a dock corresponding to a floating foundation (40), the splicing tool (30) comprising a first end and a second end with a height difference, the second end being opposite to the first end in a first direction and protruding from an outer edge of the dock; an assembling step of the first tower section (10), installing the first tower section (10) on the floating foundation (40), and moving the first tower section (10) and the floating foundation (40) as a whole, so that the first tower section (10) is at least partially arranged opposite to the second end in a height direction; The step of assembling the second tower section (20) comprises hoisting the second tower section (20) to the first end of the splicing tool (30), controlling the second tower section (20) to move from the first end of the splicing tool (30) to the second end and assembling it onto the first tower section (10), so as to realize the assembly of the wind turbine set.

2. The assembly method according to claim 1, characterized in that: In the preparation step, the splicing tool (30) comprises a support (1) and a lifting platform (2) and a moving platform (3) respectively arranged on the support (1) and having intersecting moving paths, the lifting platform (2) is located at the first end, and the moving platform (3) comprises a bearing mechanism (31) and a limiting mechanism (32) arranged on the bearing mechanism (31); The step of assembling the second tower section (20) specifically comprises: A hoisting step, moving the movable platform (3) to the upper side of the lifting platform (2) along the height direction, hoisting the second tower section (20) to the first end of the splicing tool (30) and supporting it on the lifting platform (2); A lifting step, controlling the lifting platform (2) to drive the second tower section (20) to rise along the height direction; A moving step, fixing the second tower section (20) by means of the limiting mechanism (32), driving the supporting mechanism (31) to move along the first direction, and after the second tower section (20) moves to the second end, assembling the second tower section (20) onto the first tower section (10) to realize the assembly of the wind turbine set.

3. The assembly method according to claim 2, characterized in that: In the preparation step, the carrying mechanism (31) is provided with a docking hole; The hoisting step comprises: moving the mobile platform (3) to the upper side of the lifting platform (2) along the height direction, piercing the second tower section (20) with the docking hole and hoisting it to the first end of the splicing tool (30), and supporting the second tower section (20) on the lifting platform (2).

4. The assembly method according to claim 3, characterized in that: In the preparation step, the limiting mechanism (32) comprises a clamping assembly (321), and the clamping assembly (321) at least partially extends into the docking hole; The step of fixing the second tower section (20) by means of the limiting mechanism (32) comprises: clamping the second tower section (20) by means of a clamping assembly (321) on the moving platform (3).

5. The assembly method according to claim 4, characterized in that: In the preparation step, the splicing tool (30) further includes a controller and a distance sensor, and the distance sensor is arranged on the floating foundation (40) and / or the second end of the splicing tool (30); The upgrading step specifically includes: The distance sensor collects distance data along the height direction between the floating foundation (40) and the second end of the splicing tooling (30), and the controller controls the lifting platform (2) to drive the second tower section (20) to rise to a preset height according to the distance data.

6. The assembly method according to claim 3, characterized in that: In the preparation step, the limiting mechanism (32) comprises a connecting flange (322), and the connecting flange (322) is arranged on a side surface of the supporting mechanism (31) facing the lifting platform (2) along the height direction; The step of fixing the second tower section (20) by means of the limiting mechanism (32) comprises: connecting the second tower section (20) to a connecting flange (322) of the supporting mechanism (31).

7. The assembly method according to claim 6, characterized in that: In the preparation step, the splicing tool (30) further includes a lifting component (6) arranged at the second end portion; The step of assembling the second tower section (20) onto the first tower section (10) comprises: The second tower section (20) is hoisted by the lifting assembly (6) so that the second tower section (20) is detached from the moving platform (3); The lifting assembly (6) is controlled to drive the second tower section (20) to move along the height direction, and the second tower section (20) is brought into contact with the first tower section (10).

8. The assembly method according to claim 7, characterized in that: In the preparation step, the lifting assembly (6) is connected to the support (1) by rotation along its own axis, and the axis is parallel to the height direction; Before the step of suspending the second tower section (20) through the lifting assembly (6), the step further includes: controlling the lifting assembly (6) to rotate along its own axis so as to rotate the lifting assembly (6) to correspond to the suspension point of the second tower section (20).

9. The assembly method according to claim 3, characterized in that: In the preparation step, the bearing mechanism (31) comprises more than two bearing components (311) and a connecting member (312), the bearing components (311) are movably connected to the support (1) along the first direction, and each of the bearing components (311) is provided with an arc portion; Before the lifting step, the method further comprises: splicing the arc-shaped portions of two or more of the bearing assemblies (311) to each other, and assembling them through the connecting piece (312) to form the bearing mechanism (31) having the docking hole; After the step of assembling the second tower section (20), the method further comprises: removing the connecting member (312) to separate the wind turbine generator set from the supporting mechanism (31).

10. The assembly method according to claim 9, characterized in that: In the preparation step, each of the bearing components (311) comprises a bearing member (3111) and a splicing member (3112), the position of the splicing member (3112) on the bearing member (3111) is adjustable, and the arc portion is arranged on the splicing member (3112); The step of splicing the arc-shaped portions of two or more of the bearing components (311) together comprises: adjusting the position of the splicing component (3112) relative to the bearing component (3111) so that the diameter of the docking hole formed by the splicing matches the cylinder diameter of the second tower section (20).

11. The assembly method according to claim 1, characterized in that: In the preparation step, the second tower section (20) includes a second tower barrel section (210), a machine head (220), and more than two blades (230); The step of assembling the second tower section (20) specifically comprises: The second tower section (210) is hoisted to the first end of the splicing tool (30), and the machine head (220) and part of the blades (230) are installed on the second tower section (210) to form a preformed second tower section (20), and part of the blades (230) can be rotated to the same side of the machine head (220) in the height direction; Controlling the preformed second tower section (20) to move from the first end of the splicing tool (30) to the second end and assemble it onto the first tower section (10), so as to realize the assembly of the wind turbine generator set; The wind turbine set is removed from the splicing tool (30), and another portion of the blades (230) is installed on the other side of the machine head (220) along the height direction.

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