Installation method for offshore wind turbine

Abstract

An installation method for an offshore wind turbine, comprising: providing a docking device (100), and movably fixing the docking device to a floating foundation (200), the docking device comprising an annular body (10) and a docking cavity penetrating therethrough; connecting a compensation device (300) to a hoisting appliance (400), the hoisting appliance being connected to a hoisted object by means of the compensation device; using the hoisting appliance to hoist a support tower (500), and inserting the support tower into the docking cavity and connecting same to the floating foundation (200); moving the docking device to the end of the support tower away from the floating foundation in the axial direction of the support tower and movably fixing same to the outer wall of the support tower; and using the compensation device to hoist a power generation assembly, the power generation assembly comprising a rotor, a nacelle (700) and a connection tower (800) connected to the nacelle, and inserting the connection tower into the docking cavity and connecting same to the support tower. The method improves the capability of installing offshore wind turbines and reduces installation costs.

Description

Installation method of offshore wind turbines

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202311870080.1, filed on December 29, 2023, entitled “Method for installing an offshore wind turbine generator system,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of wind power generation, and in particular to a method for installing an offshore wind turbine generator set. Background Art

[0004] With the continuous maturity of offshore wind power technology, offshore wind turbines are gradually developing towards large capacity. At the same time, as the offshore project areas are gradually saturated, offshore wind power projects are gradually developing towards the deep sea.

[0005] At present, the construction process of offshore floating units mainly involves assembling the wind turbines onto the floating foundation by crane at the dock, then transporting them to the offshore machine site by wet dragging, and fixing them to complete the installation of the offshore wind turbine.

[0006] However, large-capacity turbines increase in weight and height. Currently, there are no large, suitable cranes available on the market for assembling large-capacity turbines at docks. Even if cranes were available, docks have limited capacity and are unable to handle the heavy lifting of these units. Therefore, improvements are needed to the installation of large-capacity offshore turbines. Summary of the Invention

[0007] The embodiment of the present application provides an installation method for an offshore wind turbine generator set, which can realize the direct installation operation of the wind turbine generator set at sea, adapt to the conditions of offshore installation, improve the installation capability of the offshore unit, and reduce the installation cost.

[0008] According to an embodiment of the present application, a method for installing an offshore wind turbine generator set is proposed, comprising:

[0009] A docking device is provided, and the docking device is movably fixed on the floating foundation, wherein the docking device includes an annular body and a docking cavity running through the docking device;

[0010] A compensating device is connected to the sling, and the sling is connected to the hoisted object through the compensating device. The compensating device includes a fixing mechanism and an adjusting mechanism. The adjusting mechanism is arranged on the fixing mechanism and is configured to be movable relative to the fixing mechanism to absorb the shaking of the hoisted object.

[0011] Use the compensation device to hoist the supporting tower, insert the supporting tower into the docking cavity and connect it to the floating foundation;

[0012] The docking device is moved along the axial direction of the support tower to the end of the support tower away from the floating foundation and is movably fixed to the outer wall of the support tower;

[0013] The compensation device is used to hoist the power generation assembly, which includes an impeller, a nacelle and a connecting tower connected to the nacelle. The connecting tower is inserted into the docking cavity and connected to the supporting tower.

[0014] According to one aspect of an embodiment of the present application, the supporting tower includes multiple tower sections. The steps of hoisting the supporting tower using a compensation device, inserting the supporting tower into the docking cavity, and connecting it to the floating foundation include:

[0015] Using the compensation device to hoist the first tower section, inserting the first tower section into the docking cavity and connecting it to the floating foundation;

[0016] The docking device is moved axially to the end of the first tower section away from the floating foundation and fixed;

[0017] Using the compensation device to hoist the second tower section, insert the second tower section into the docking cavity and connect it to the first tower section;

[0018] Repeat the above steps to hoist the remaining tower sections until all tower sections are connected to each other to obtain a supported tower.

[0019] According to one aspect of an embodiment of the present application, the docking device includes a limiter, which is arranged at one end of the annular body and protrudes toward the docking cavity, and a limit protrusion is provided on the limiter. The tower section includes a connecting plate protruding from the outer wall, and the connecting plate is provided with a connecting hole;

[0020] The steps of using the compensation device to hoist the second tower section, inserting the second tower section into the docking cavity and connecting it to the first tower section include: docking the connecting plate of the second tower section to the limiting body and inserting the limiting protrusion into the connecting hole so that the limiting body supports the second tower section.

[0021] According to one aspect of an embodiment of the present application, the docking device includes a telescopic assembly, one end of the telescopic assembly is connected to the limiting body and the other end is connected to the annular body;

[0022] After the step of docking the connecting plate of the second tower section to the limiting body and inserting the limiting protrusion into the connecting hole so that the limiting body supports the second tower section, it also includes: controlling the telescopic assembly to retract toward the docking cavity to drive the limiting body and the second tower section to move toward the first tower section until the two are docked.

[0023] According to one aspect of the embodiment of the present application, the docking device includes a rotating member, which is provided at one end of the annular body and connected to the limiting body;

[0024] Before the step of docking the connecting plate of the second tower section to the limiting body and inserting the limiting protrusion into the connecting hole so that the limiting body supports the second tower section, it also includes: controlling the rotating part to rotate circumferentially along the first tower section to drive the limiting body to rotate until the docking reference line of the limiting body matches the docking reference line of the first tower section.

[0025] According to one aspect of an embodiment of the present application, the compensation device includes a rotating member connected to the adjustment mechanism and configured to drive the adjustment mechanism to rotate;

[0026] The steps of using the compensation device to hoist the second tower section, inserting the second tower section into the docking cavity and connecting it to the first tower section include: using the rotating member to drive the adjustment mechanism to rotate to drive the second tower section to rotate until the docking reference line of the second tower section matches the docking reference line of the first tower section.

[0027] According to one aspect of the embodiments of the present application, the docking device includes a locking member, which is provided on the annular body;

[0028] The step of moving the docking device along the axial direction of the supporting tower to the end of the supporting tower away from the floating foundation and fixing it includes: fixing the docking device on the supporting tower by using a locking piece.

[0029] According to one aspect of the embodiment of the present application, the locking member includes a fixing pin, and the outer wall of the support tower is provided with a movable guide rail, and the movable guide rail is provided with a positioning hole;

[0030] The step of moving the docking device along the axial direction of the supporting tower to the end of the supporting tower away from the floating foundation and fixing it includes: moving the docking device along the movable guide rail to the end of the supporting tower away from the floating foundation, and then using a fixing pin to insert into the positioning hole to fix the docking device on the supporting tower.

[0031] According to one aspect of an embodiment of the present application, the annular body includes a first annular body and a second annular body that are movably connected. The first annular body and the second annular body enclose an adjustable docking cavity. The steps of moving the docking device along the axial direction of the support tower to an end of the support tower facing away from the floating foundation and fixing the docking device include:

[0032] The second ring body is fixed and the first ring body is moved axially toward a side gradually away from the second ring body, wherein the space of the docking cavity is adjusted;

[0033] After the first ring body moves to the end of the supporting tower away from the floating foundation, the first ring body is fixed and the second ring body moves axially toward a side gradually approaching the first ring body;

[0034] When the second ring body moves to the end of the supporting tower away from the floating foundation, the second ring body is fixed and enclosed with the first ring body to form an adjusted docking cavity.

[0035] According to one aspect of an embodiment of the present application, the compensation device includes a sling connected to an adjustment mechanism and having an adjustable position on the adjustment mechanism. The steps of using the compensation device to lift a support tower, inserting the support tower into the docking cavity, and connecting it to the floating foundation include:

[0036] Adjust the position of the sling relative to the adjustment mechanism so that the sling and the supporting tower have the same extension direction;

[0037] Connect the slings to the support tower and lift the support tower.

[0038] According to one aspect of an embodiment of the present application, before the step of using the compensation device to hoist the power generation assembly and inserting the connecting tower into the docking cavity and connecting it to the supporting tower, the step further includes:

[0039] Provide an installation platform with installation columns;

[0040] Hoist the engine head onto the mounting column. The engine head includes a nacelle, a hub connected to the nacelle, and a connecting tower. The engine head is connected to the mounting column via the connecting tower.

[0041] A plurality of blades are hoisted onto the hub to form an impeller.

[0042] According to one aspect of an embodiment of the present application, a hub is provided with a plurality of connection ports, and the steps of hoisting a plurality of blades onto the hub to obtain an impeller include:

[0043] Turn the hub so that the opening of any connection port faces horizontally;

[0044] Hoist any blade horizontally to the connection port;

[0045] Repeat the above process to hoist each of the multiple blades to the multiple connection ports.

[0046] According to one aspect of an embodiment of the present application, the nose also includes a yaw system, and the nose is connected to the mounting column through the yaw system. After the step of hoisting multiple blades onto the hub to obtain the impeller, it also includes: using the yaw system to rotate the cabin and the impeller, and the impeller has a hoisting space.

[0047] The embodiment of the present application provides a method for installing an offshore wind turbine generator set. By installing a docking device on a floating foundation, using a compensation device to insert the support tower into the docking cavity of the docking device, and then connecting the support tower to the floating foundation, the docking device can provide a preliminary docking position for the support tower and fix it. At the same time, the compensation device can buffer the hoisting process, overcome the shaking during offshore operations, and make the installation process of the support tower more stable, in line with the offshore operation environment and meet the installation conditions. The compensation device is then used to hoist the power generation component and also form a docking fixation through the docking device, completing the installation operation of the offshore unit. The cooperation between the docking device and the compensation device improves the stability of the offshore hoisting process, has the ability to perform hoisting operations at sea, and reduces the risks during the hoisting process. At the same time, performing installation operations at sea also avoids performing operations at the dock, avoids replacing large cranes and strengthening docks, and saves installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0049] FIG1 is a flow chart of a method for installing an offshore wind turbine generator set according to an embodiment of the present application;

[0050] FIG2 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0051] FIG3 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0052] FIG4 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0053] FIG5 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0054] FIG6 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0055] FIG7 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0056] FIG8 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0057] FIG9 is a process diagram of an installation method of an offshore wind turbine generator set according to an embodiment of the present application;

[0058] FIG10 is a schematic structural diagram of a docking device according to an embodiment of the present application;

[0059] FIG11 is a schematic structural diagram of a compensation device according to an embodiment of the present application.

[0060] Figure numerals: 100-docking device; 200-floating foundation; 300-compensation device; 400-spreader; 500-supporting tower; 501-first tower section; 502-second tower section; 600-blade; 700-nacelle; 800-connecting tower; 10-ring body; 11-first ring body; 12-second ring body; 20-fixing mechanism; 30-adjusting mechanism; 40-limiting body; 41-limiting protrusion; 50-telescopic assembly; 60-rotating member; 70-rotating member; 80-locking member; 90-sling; 1-installation platform; 2-installation column.

[0061] In the drawings, like parts are given like reference numerals, but the drawings are not necessarily drawn to scale. DETAILED DESCRIPTION

[0062] 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 set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is merely intended 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 well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present application; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0063] The directional words appearing in the following description are all directions shown in the figures, and do not limit the installation method of the offshore wind turbine generator set 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.

[0064] In order to better understand the present application, the installation method of the offshore wind turbine generator set according to the embodiment of the present application is described in detail below with reference to Figures 1 to 11.

[0065] Referring to FIG1 , according to an embodiment of the present application, a method for installing an offshore wind turbine generator set is proposed, comprising:

[0066] S1. Provide a docking device 100 and movably fix the docking device 100 on the floating foundation 200. The docking device 100 includes a ring-shaped body 10 and a docking cavity running through the docking device 100.

[0067] S2. Connecting the compensation device 300 to the sling 400. The sling 400 is connected to the hoisted object through the compensation device 300. The compensation device 300 includes a fixing mechanism 20 and an adjustment mechanism 30. The adjustment mechanism 30 is disposed on the fixing mechanism 20 and is configured to be movable relative to the fixing mechanism 20 to absorb the shaking of the hoisted object.

[0068] S3. Use the compensation device 300 to hoist the supporting tower 500, insert the supporting tower 500 into the docking cavity and connect it to the floating foundation 200;

[0069] S4. Move the docking device 100 along the axial direction of the support tower 500 to the end of the support tower 500 away from the floating foundation 200 and movably fix it to the outer wall of the support tower 500;

[0070] S5. Use the compensation device 300 to hoist the power generation assembly, which includes an impeller, a nacelle 700, and a connecting tower 800 connected to the nacelle 700. Insert the connecting tower 800 into the docking cavity and connect it to the supporting tower 500.

[0071] As shown in FIG2 , in step S1 , a docking device 100 is first provided. The docking device 100 is a ring-shaped body 10 structure, which itself has a docking cavity. The docking cavity is an annular cavity structure, and its function is to accommodate the tower structure. During the installation process, the end of the tower can be preliminarily fixed.

[0072] It can be understood that the radial dimension of the annular body 10 of the docking device 100 is larger than the radial dimension of the tower, so that the tower can be smoothly inserted into the annular body 10 of the docking device 100 during the hoisting and docking process. Optionally, the docking device 100 forms a bolt connection with the flange of the offshore floating foundation 200 through its own annular body 10.

[0073] In step S2, the compensation device 300 is connected using the hook on the sling 400, and then connected to the hoisted object through the compensation device 300. The main structure of the compensation device 300 has two parts: a fixing mechanism 20 and an adjusting mechanism 30 that are movably connected. The adjusting mechanism 30 can move relative to the fixing mechanism 20. The main function of the compensation device 300 is to use the adjusting mechanism 30 to buffer the shaking during the hoisting process.

[0074] Specifically, when strong winds or waves cause shaking during hoisting, the adjustment mechanism 30 in the compensation device 300 can automatically move relative to the fixing mechanism 20, thereby replacing the shaking of the hoisted object and forming an effective compensation buffer for the shaking, so that the hoisted object always remains in a relatively static state, ensuring that the docking process can proceed smoothly.

[0075] In the subsequent step S3, the supporting tower 500 is hoisted using the compensation device 300. When the supporting tower 500 is affected by wind, the compensation device 300 can absorb the shaking of the supporting tower 500, so that the supporting tower 500 always remains in a relatively static state during the docking process with the docking device 100, so that it can be accurately docked with the docking device 100.

[0076] Since the docking cavity is an annular cavity, it accommodates the support tower 500 during docking, and further fixes the end of the support tower 500. After the support tower 500 is gradually extended into the docking cavity, it is bolted to the floating foundation 200 at the bottom.

[0077] After the support tower 500 is connected to the floating foundation 200, in step S4, the docking device 100 at the bottom continues to move upward until it reaches the top of the support tower 500, and at the same time, the docking device 100 is movably fixed to the outer wall of the support tower 500 in preparation for the next docking.

[0078] Optionally, the docking device 100 can adopt a pneumatic cylinder structure to move it upward, or it can adopt multiple other driving methods, and it can be fixed by abutting against the outer wall of the tower, or it can be fixed by plugging. This application does not specifically limit the moving method and fixing method of the docking device 100.

[0079] After the installation of the supporting tower 500 is completed, in step S5, the compensation device 300 is used to hoist the power generation components, that is, the impeller, the nacelle 700 and other components.

[0080] It should be noted that in this step, a docking tower 800 must be pre-installed at the bottom of the nacelle 700 to engage with the docking device 100 on the support tower 500, thereby connecting the nacelle 700 to the support tower 500. The docking tower 800 primarily serves as a transition, as it is difficult to directly hoist the nacelle 700 onto the support tower 500 due to the thin shell and small docking port. Direct hoisting can easily cause damage.

[0081] Also under the action of the compensation device 300, the power generation component has better stability during hoisting. The compensation device 300 can absorb shaking during hoisting, so that the power generation component always remains in a relatively static state, ensuring a smooth docking with the supporting tower 500 through the connecting tower 800.

[0082] Optionally, for the installation of the power generation assembly, the impeller and the nacelle 700 can be installed separately at sea. Of course, the entire assembly can also be pre-installed at the dock and then transported to the sea for installation.

[0083] The present invention provides an offshore wind turbine installation method. The method comprises installing a docking device 100 on a floating foundation 200, inserting a support tower 500 into a docking cavity of the docking device 100 using a compensation device 300, and then connecting the support tower 500 to the floating foundation 200. The docking device 100 provides a preliminary docking position for the support tower 500 and secures it. The compensation device 300 also cushions the lifting process, overcoming the shaking caused by offshore operations and making the installation of the support tower 500 more stable, consistent with the offshore operating environment and meeting installation requirements. The compensation device 300 is then used to lift the power generation assembly and similarly dock and secure it using the docking device 100, completing the offshore unit installation. The coordination of the docking device 100 and the compensation device 300 improves the stability of the offshore installation process, enabling offshore installation operations and reducing risks. Furthermore, performing installation operations at sea avoids the need for dock operations, eliminating the need for replacing large cranes and reinforcing docks, thereby saving installation costs.

[0084] As an optional embodiment, referring to FIG. 2 and FIG. 3 , the supporting tower 500 includes multiple tower segments. The steps of hoisting the supporting tower 500 using the compensation device 300 , inserting the supporting tower 500 into the docking cavity, and connecting it to the floating foundation 200 include:

[0085] S31, using the compensation device 300 to hoist the first tower section 501, inserting the first tower section 501 into the docking cavity and connecting it to the floating foundation 200;

[0086] S32, moving the docking device 100 axially to the end of the first tower section 501 away from the floating foundation 200 and fixing it;

[0087] S33, using the compensation device 300 to hoist the second tower section 502, inserting the second tower section 502 into the docking cavity and connecting it to the first tower section 501;

[0088] S34. Repeat the above steps to hoist the remaining tower sections until all the tower sections are connected to each other to obtain the supporting tower 500.

[0089] Optionally, the supporting tower 500 can be divided into multiple tower sections. When hoisting the supporting tower 500, the multiple tower sections can be transported to the sea, and each tower section can be hoisted one by one to obtain the final supporting tower 500. This application does not specifically limit the number of sections of the supporting tower 500.

[0090] In step S31, the first tower section 501 is first hoisted. The first tower section 501 needs to be docked with the docking device 100 connected to the floating foundation 200. The first tower section 501 is also hoisted using the compensation device 300 to absorb the shaking of the first tower section 501. After it is inserted into the docking cavity, it is bolted to the bottom flange on the floating foundation 200.

[0091] At this time, in step S32, the docking device 100 continues to be moved upward along the axial direction of the tower until it reaches the top of the first tower section 501 and is fixed. The moving method and fixing method of the docking device 100 are the same as the above steps and will not be repeated here.

[0092] In step S33, the second tower section 502 is hoisted using the compensation device 300, inserted into the docking device 100 at the top of the first tower section 501, and bolted to the end flange on the first tower section 501. This step is the connection between the tower sections.

[0093] Specifically, it is necessary to take into account the specific number of tower segments and repeat in step S34 until all tower segments are connected to obtain a complete supporting tower 500. During the entire process, the docking device 100 is used to dock with the tower segment to form a preliminary fixation, and the compensation device 300 is used for hoisting to absorb shaking until all tower segments are connected smoothly.

[0094] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By dividing the supporting tower 500 into multiple tower sections, the docking device 100 and the compensation device 300 are used to stably lift each tower section. Splitting the tower into multiple tower sections facilitates the transportation of the tower sections at sea, while increasing stability during lifting.

[0095] As an optional embodiment, referring to FIG3 and in combination with FIG10 , the docking device 100 includes a limiter 40, which is disposed at one end of the annular body 10 and protrudes toward the docking cavity. A limiter protrusion 41 is provided on the limiter 40. The tower section includes a connecting plate protruding from the outer wall, and the connecting plate is provided with a connecting hole.

[0096] The steps of using the compensation device 300 to hoist the second tower section 502, inserting the second tower section 502 into the docking cavity and connecting it to the first tower section 501 include: docking the connecting plate of the second tower section 502 to the limiting body 40 and inserting the limiting protrusion 41 into the connecting hole, so that the limiting body 40 supports the second tower section 502.

[0097] In this embodiment, a limiting body 40 is provided in the docking device 100 and a corresponding extending connecting plate is provided on the outer wall of the tower section. This is because when the tower section is inserted into the docking cavity, the bearing capacity of the docking device 100 on the tower section is increased.

[0098] When the second tower section 502 is inserted into the docking cavity, the connecting plate on the side wall of the second tower section 502 abuts against the extending limiting body 40 in the docking device 100 through its own connecting hole. Specifically, the limiting protrusion 41 on the limiting body 40 is inserted into the connecting hole, forming a docking between the connecting plate of the second tower section 502 and the limiting body 40 of the docking device 100, and the limiting body 40 provides a certain support for the second tower section 502.

[0099] After the docking is formed, the bottom flange hole of the second tower section 502 is located below the limiting body 40 in the docking cavity, and is docked with the top flange hole of the first tower section 501 .

[0100] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By setting a limit body 40 in the docking device 100 to abut against the connecting plate on the tower section, support is formed for the tower section, thereby improving the stability of the tower section during docking.

[0101] As an optional embodiment, referring to FIG. 3 and in combination with FIG. 10 , the docking device 100 includes a telescopic assembly 50 , one end of the telescopic assembly 50 being connected to the limiting body 40 and the other end being connected to the annular body 10 ;

[0102] After the step of docking the connecting plate of the second tower section 502 to the limiting body 40 and inserting the limiting protrusion 41 into the connecting hole so that the limiting body 40 supports the second tower section 502, it also includes: controlling the telescopic assembly 50 to retract toward the docking cavity to drive the limiting body 40 and the second tower section 502 to move toward the first tower section 501 until the two are docked.

[0103] In this embodiment, the main consideration is that after the second tower section 502 is inserted into the docking cavity, there is still a distance between the end flange at the bottom of the second tower section 502 and the end flange at the top of the first tower section 501, which makes it impossible to dock the two. Therefore, in this embodiment, a telescopic component 50 is set in the docking device 100.

[0104] Specifically, the telescopic assembly 50 is connected between the limiting body 40 and the annular body 10 , and the telescopic assembly 50 can perform telescopic movement in the axial direction to drive the limiting body 40 to perform relative movement in the axial direction relative to the annular body 10 .

[0105] Since during the process of hoisting the second tower section 502, the connecting plate on the side wall of the second tower section 502 abuts against the limiting body 40 in the docking device 100, when the limiting body 40 moves downward following the telescopic assembly 50, it will drive the abutting second tower section 502 to move, and the second tower section 502 moves toward the first tower section 501 until it docks with the first tower section 501.

[0106] Optionally, the telescopic assembly 50 can be arranged around the circumference of the tower, so as to evenly drive the tower sections to perform telescopic movement. At the same time, the telescopic assembly 50 can have a variety of structural forms. This application does not specifically limit the specific structural form of the telescopic assembly 50, as long as it can drive the tower sections to move axially.

[0107] An embodiment of the present application provides a method for installing an offshore wind turbine generator set, by arranging a telescopic component 50 in the docking device 100, connecting the telescopic component 50 between the annular body 10 and the limiting body 40, and utilizing its telescopic performance to drive the tower section abutting against the limiting body 40 to move, thereby shortening the distance between the tower sections during the docking process, so that the end flanges of the two can form a sufficient docking, providing a guarantee for the subsequent installation bolts and torque tightening.

[0108] As an optional embodiment, referring to FIG. 3 and in combination with FIG. 10 , the docking device 100 includes a rotating member 60 , which is disposed at one end of the annular body 10 and connected to the limiting body 40 ;

[0109] Before the step of docking the connecting plate of the second tower section 502 to the limiting body 40 and inserting the limiting protrusion 41 into the connecting hole so that the limiting body 40 supports the second tower section 502, it also includes: controlling the rotating part 60 to rotate along the circumferential direction of the first tower section 501 to drive the limiting body 40 to rotate until the docking reference line of the limiting body 40 matches the docking reference line of the first tower section 501.

[0110] Optionally, a rotating member 60 is provided in the docking device 100 , and the rotating member 60 is connected to the limiting body 40 , so that the limiting body 40 can be rotated and adjusted.

[0111] The purpose of rotationally adjusting the limiter 40 is to match the docking reference line of the limiter 40 with the docking reference line of the bottom first tower section 501, so that the docking device 100 moved to the top of the first tower section 501 and the first tower section 501 have the same installation state, thereby providing a basis for the precise docking of the second tower section 502.

[0112] Specifically, before hoisting the second tower section 502, the rotating member 60 is used to start rotation adjustment. The rotating member 60 can drive the limiting body 40 to rotate in the circumferential direction until the limiting body 40 and the first tower section 501 at the bottom have the same docking reference line, and the rotation of the rotating member 60 is stopped.

[0113] Optionally, the rotating member 60 can adopt different structural forms, for example, driving the ring gear to rotate through gear transmission, etc. The present application does not specifically limit the specific structure of the rotating member 60, as long as it can drive the limiting body 40 to rotate and adjust.

[0114] An embodiment of the present application provides a method for installing an offshore wind turbine generator set, by arranging a rotating part 60 in the docking device 100 to drive the limiting body 40 to be able to rotate and adjust, so that the limiting body 40 and the first tower section 501 have a matching docking reference line, providing a guarantee for the subsequent precise docking of the second tower section 502 with the first tower section 501.

[0115] As an optional embodiment, referring to FIG. 3 and in combination with FIG. 10 , the compensation device 300 includes a rotating member 70 , which is connected to the adjustment mechanism 30 and is configured to drive the adjustment mechanism 30 to rotate;

[0116] The steps of using the compensation device 300 to hoist the second tower section 502, inserting the second tower section 502 into the docking cavity and connecting it to the first tower section 501 include: using the rotating member 70 to drive the adjustment mechanism 30 to rotate to drive the second tower section 502 to rotate until the docking reference line of the second tower section 502 matches the docking reference line of the first tower section 501.

[0117] In order to match the docking reference line of the second tower section 502 with that of the first tower section 501, optionally, by setting a rotating part 70 in the compensation device 300, the docking reference line of the second tower section 502 can be adjusted by using the rotating part 70 during the hoisting process of the second tower section 502, so that it matches the reference line of the limit body 40 in the docking device 100, that is, matches the reference line of the first tower section 501, thereby achieving precise docking of the second tower section 502 with the first tower section 501.

[0118] When the second tower section 502 is hoisted, the second tower section 502 is connected to the adjustment mechanism 30 in the compensation device 300 through the sling 90. The movement characteristics of the adjustment mechanism 30 relative to the fixing mechanism 20 are used to buffer the shaking. At the same time, the rotating part 70 can drive the adjustment mechanism 30 to rotate, and then drive the second tower section 502 connected thereto to rotate, completing the adjustment of the docking reference line of the second tower section 502 until it matches the first tower section 501.

[0119] Optionally, the rotating member 70 can be rotated by gear transmission and can be set on the top of the fixing mechanism 20 and the adjusting mechanism 30, so as to drive the fixing mechanism 20 and the adjusting mechanism 30 to rotate at the same time. This application does not specifically limit the specific structure and rotation form of the rotating member 70, and it is sufficient to ensure that the baseline of the second tower section 502 can be rotated and adjusted.

[0120] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By setting a rotating part 70 in the compensation device 300, rotation adjustment of the tower section during the lifting process is achieved, so that its docking reference line matches the docking device 100, thereby enabling smooth and precise docking of the tower section, having better adjustable performance, and providing convenience for the docking process.

[0121] As an optional embodiment, referring to FIG. 3 and in combination with FIG. 10 , the docking device 100 includes a locking member 80 , which is disposed on the annular body 10 ;

[0122] The step of moving the docking device 100 along the axial direction of the support tower 500 to the end of the support tower 500 away from the floating foundation 200 and fixing the docking device 100 includes: fixing the docking device 100 on the support tower 500 by using the locking member 80 .

[0123] After the support tower 500 is plugged into the docking device 100 and connected to the floating foundation 200 by bolts, the docking device 100 has completed the docking task at this position and needs to be moved upward along the axial direction of the tower until it reaches the top of the support tower 500.

[0124] In order to fix the docking device 100 on the side wall at the top of the supporting tower 500, the device is locked by a locking member 80 in this embodiment. The present application does not specifically limit the structure of the locking member 80, and it can be fixed in a plug-in or abutment manner.

[0125] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By providing a locking member 80 in the docking device 100, the docking device 100 can be easily fixed after being moved axially, thereby providing a guarantee for the subsequent docking process.

[0126] As an optional embodiment, the locking member 80 includes a fixing pin, and the outer wall of the support tower 500 is provided with a movable guide rail, and the movable guide rail is provided with a positioning hole;

[0127] The step of moving the docking device 100 along the axial direction of the support tower 500 to the end of the support tower 500 away from the floating foundation 200 and fixing it includes: moving the docking device 100 along the movable guide rail to the end of the support tower 500 away from the floating foundation 200, and then using a fixing pin to insert into the positioning hole to fix the docking device 100 on the support tower 500.

[0128] Optionally, a movable guide rail is provided on the outer wall of the support tower 500. By extending the movable guide rail in the axial direction, a guide is provided for the movement of the docking device 100 on the outer wall, so that the docking device 100 is easy to move and adjust.

[0129] At the same time, a positioning hole is provided on the movable guide rail, and the locking member 80 adopts a fixed pin structure. When the docking device 100 moves to the top of the supporting tower 500, the fixed pin at this time can be inserted into the positioning hole on the movable guide rail, thereby locking the docking device 100 by plugging, so as to facilitate subsequent docking at this position.

[0130] An embodiment of the present application provides an installation method for an offshore wind turbine generator set. By utilizing a locking method in which a fixing pin is inserted into a positioning hole, a feasible method is provided for fixing the docking device 100, which facilitates automatic fixation while also providing guidance for the movement and adjustment of the docking device 100.

[0131] As an optional embodiment, referring to FIG3 and FIG10 , the annular body 10 includes a first annular body 11 and a second annular body 12 that are movably connected. The first annular body 11 and the second annular body 12 enclose an adjustable docking cavity. The first annular body 11 and the second annular body 12 are respectively provided with a locking member 80. The steps of moving the docking device 100 along the axial direction of the support tower 500 to the end of the support tower 500 away from the floating foundation 200 and fixing it include:

[0132] S41, fixing the second ring body 12 and moving the first ring body 11 axially toward a side gradually away from the second ring body 12, wherein the space of the docking cavity is adjusted;

[0133] S42, after the first ring body 11 moves to the end of the support tower 500 away from the floating foundation 200, the first ring body 11 is fixed and the second ring body 12 is moved axially toward a side gradually approaching the first ring body 11;

[0134] S43. After the second ring body 12 moves to the end of the supporting tower 500 away from the floating foundation 200, the second ring body 12 is fixed and enclosed with the first ring body 11 to form an adjusted docking cavity.

[0135] Optionally, the first ring body 11 and the second ring body 12 are each provided with a locking member 80. In step S41, the locking member 80 of the first ring body 11 is disconnected from the support tower 500 and the locking member 80 of the second ring body 12 is connected to the support tower 500, thereby fixing the second ring body 12 to the outer wall of the support tower 500. The first ring body 11 moves axially toward a side gradually away from the second ring body 12. Since the first ring body 11 and the second ring body 12 are axially away from each other, the space of the docking cavity enclosed by the two is also adjusted.

[0136] In step S42, after the first ring body 11 moves to the end of the support tower 500 away from the floating foundation 200, the locking piece 80 of the first ring body 11 is connected to the support tower 500 and the locking piece 80 of the second ring body 12 is disconnected from the support tower 500, thereby fixing the first ring body 11 on the outer wall of the support tower 500, and the second ring body 12 moves axially toward the side gradually approaching the first ring body 11, and the distance between the two gradually decreases.

[0137] In step S43, when the second ring body 12 moves to the end of the supporting tower 500 away from the floating foundation 200, the locking piece 80 of the second ring body 12 is connected to the supporting tower 500. At this time, the first ring body 11 and the second ring body 12 are jointly fixed on the outer wall of the supporting tower 500 and are jointly located at the top of the supporting tower 500. The two are jointly enclosed to form a docking cavity, so that the docking cavity is adjusted, thereby providing a basis for subsequent tower docking.

[0138] Optionally, the first ring body 11 and the second ring body 12 may be connected via a hydraulic cylinder, thereby achieving relative movement between the two ring bodies.

[0139] When the docking device 100 is still at the bottom of the support tower 500, after completing the connection between the support tower 500 and the floating foundation 200, first in step S41, the locking piece 80 of the first ring body 11 is opened so that it can move on the outer wall of the support tower 500 relative to the second ring body 12. At this time, the second ring body 12 is still locked at the bottom of the support tower 500.

[0140] Then enter step S42. When the first ring body 11 gradually moves to the top of the supporting tower 500, the locking piece 80 of the first ring body 11 fixes it at the top. At this time, the locking piece 80 of the second ring body 12 is opened, and under the driving action of the hydraulic cylinder, it moves toward the top of the first ring body 11. Similarly, after moving to the top of the supporting tower 500, in step S43, it is fixed at this position using the locking piece 80, thereby completing the entire movement process of the docking device 100.

[0141] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By setting the docking device 100 as a first ring body 11 and a second ring body 12 that are movably connected, the relative mobility of the two is utilized to achieve movement adjustment of the docking device 100, so that the docking device 100 has higher stability when moving on the outer wall of the support tower 500.

[0142] As an optional embodiment, referring to FIG. 3 and FIG. 11 , the compensation device 300 includes a sling 90 connected to the adjustment mechanism 30 and having an adjustable position on the adjustment mechanism 30 . The steps of using the compensation device 300 to hoist the support tower 500 and inserting the support tower 500 into the docking cavity and connecting it to the floating foundation 200 include:

[0143] Adjust the position of the sling 90 relative to the adjustment mechanism 30 so that the sling 90 and the support tower 500 have the same extension direction;

[0144] The sling 90 is connected to the supporting tower 500 and the supporting tower 500 is hoisted.

[0145] In order to further improve the balance stability when hoisting the support tower 500, the position of the sling 90 of the compensation device 300 in this embodiment is adjustable. Optionally, the position of the sling 90 can be adjusted by moving or rotating. The purpose is to have the same extension direction as the support tower 500, thereby ensuring better balance when hoisting the support tower 500.

[0146] Before using the sling 90 to connect to the support tower 500, adjust the position of the sling 90 on the adjustment mechanism 30, usually adjust it to a vertical downward state. Optionally, the sling 90 can be connected to the support tower 500 through a suspension beam set in the middle, thereby avoiding direct contact between the sling 90 and the support tower 500 and having better lifting stability.

[0147] At the same time, different models and sizes of support towers 500 have different hanging point positions. Therefore, by adjusting the position of the sling 90, it is possible to ensure that the connection is at the corresponding hanging point position, and a stable connection can be formed with different models of support towers 500, which has better adaptability.

[0148] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By making the position of the sling 90 in the compensation device 300 adjustable, the device has flexible and diverse adjustments, can better adapt to different environments, and form a more stable connection with the supporting tower 500, thereby ensuring balance and stability during the lifting process.

[0149] As an optional embodiment, referring to FIG. 4 to FIG. 9 , before using the compensation device 300 to hoist the power generation assembly and inserting the connecting tower 800 into the docking cavity and connecting it to the supporting tower 500, the following steps are further included:

[0150] Providing an installation platform 1, on which an installation column 2 is provided;

[0151] Hoist the machine head onto the mounting column 2. The machine head includes a nacelle 700, a hub connected to the nacelle 700, and a connecting tower 800. The machine head is connected to the mounting column 2 via the connecting tower 800.

[0152] A plurality of blades 600 are hoisted onto a hub to obtain an impeller.

[0153] This embodiment mainly focuses on the process of disassembling the components in the power generation assembly and transporting them to the sea for assembly. Specifically, the head and multiple blades 600 are transported from the dock to the sea respectively and assembled at sea, which reduces the pressure of assembly at the dock and the difficulty of transportation at sea.

[0154] First, it is necessary to set up an installation platform 1 next to the floating foundation 200 at sea. The installation platform 1 is a fixed platform and will not float with the waves. Optionally, the installation platform 1 can be a self-elevating platform, and installation columns 2 are set on the installation platform 1 to provide support for subsequent power generation components.

[0155] Hoist the nose onto the mounting column 2 and use the connecting tower 800 in the nose to connect to the mounting column 2. Optionally, the nacelle 700, hub and connecting tower 800 can be pre-installed on land in advance, and then transported as a whole to the sea and hoisted onto the mounting column 2. Alternatively, they can be split into individuals and hoisted separately at sea.

[0156] The machine head is hoisted onto the mounting column 2 in order to complete the installation of multiple blades 600. After the machine head is connected to the mounting column 2, the blades 600 are hoisted by the hoist 400 and connected to the hub to finally obtain the impeller. Optionally, a single blade 600 clamp can be used for separately hoisting multiple blades 600.

[0157] Optionally, since the entire hoisting process is carried out on the installation platform 1, the installation platform 1 is fixed on the sea and has higher stability, which is different from the shaking environment when the support tower 500 is hoisted on the floating foundation 200. Therefore, the above hoisting on the installation platform 1 can be performed without using the compensation device 300.

[0158] After obtaining the impeller, the impeller, the nacelle 700 and the connecting tower 800 together form a power generation assembly. The above components are assembled at sea using the installation platform 1. Subsequently, the entire power generation assembly is hoisted from the installation column 2 to the supporting tower 500 on the connected floating foundation 200 to obtain the final wind turbine generator set.

[0159] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By setting up an installation platform 1 at sea, the power generation components can be installed at sea, thereby improving the assembly capacity at sea. At the same time, it is convenient to disassemble the power generation components and transport them at sea, thereby improving the convenience of sea transportation and reducing the pressure of onshore installation and the difficulty of sea transportation.

[0160] As an optional embodiment, referring to FIG. 5 and FIG. 6 , a plurality of connection ports are provided on the hub, and the steps of hoisting a plurality of blades 600 onto the hub to obtain an impeller include:

[0161] Turn the hub so that the opening of any connection port faces horizontally;

[0162] Hoist any blade 600 horizontally to the connection port;

[0163] The above process is repeated to hoist each of the plurality of blades 600 to a plurality of connection ports.

[0164] After the machine head is hoisted to the mounting column 2, the hub can be optionally rotated using a turning tool inside the machine head so that one of the connection ports on the hub faces horizontally. A pitch bearing is usually provided at the connection port to realize the pitch process of the blade 600.

[0165] Then, use the hoist 400 to hoist a blade 600 horizontally to the connection port of the hub and connect it to the hub. Continue to rotate the hub so that the other connection port faces the horizontal direction. Repeat this process to hoist the three blades 600 to the corresponding connection port, and finally obtain the impeller.

[0166] An embodiment of the present application provides an installation method for an offshore wind turbine generator set, which realizes the assembly of the blades 600 by rotating the hub and maintaining a horizontal direction with the hoisted blades 600, which is conducive to completing the installation connection of the blades 600 and improving the stability of the connection of the blades 600.

[0167] As an optional embodiment, the nose also includes a yaw system, and the nose is connected to the mounting column 2 through the yaw system. After the step of hoisting multiple blades 600 onto the hub to obtain the impeller, it also includes: using the yaw system to rotate the cabin 700 and the impeller so that the impeller has hoisting space.

[0168] Optionally, the yaw system in this embodiment may be a system provided by the nose of the aircraft, and its main function is to be able to perform rotational adjustment on the nacelle 700 and the impeller hoisted onto the mounting column 2 .

[0169] During the process of installing the blade 600 on the hub, the yaw system may be used to rotate and adjust the direction of the hub so that the hub faces the hanger 400 , thereby facilitating docking with the blade 600 .

[0170] After obtaining the nacelle 700 and the impeller, they need to be hoisted as a whole onto the supporting tower 500 on the floating foundation 200. At this time, the yaw system can be used to rotate the nacelle 700 and the impeller on the mounting column 2 toward the sea, thereby avoiding the sling 400 and the mounting platform 1 structure, and preventing collision with other structures caused by the blades 600 being too long during hoisting. The yaw system can move the impeller toward a position that is more favorable for hoisting, providing more sufficient hoisting space.

[0171] When hoisting the entire power generation assembly, a compensation device 300 is required to be used for hoisting to cushion the shaking when hoisting on the supporting tower 500, and the connecting tower 800 in the power generation assembly is connected to the docking device 100 at the top of the supporting tower 500 to complete the docking.

[0172] For the replacement of large components of the floating unit, the reverse process of installation can be adopted, that is, the head, three blades 600 and the connecting tower 800 are hoisted onto the installation column 2 to replace the blades 600, and then the replaced power generation component is hoisted as a whole onto the supporting tower 500 of the floating foundation 200. There is no need to tow the floating foundation 200 and the entire unit back to the dock for component replacement as in the prior art.

[0173] An embodiment of the present application provides a method for installing an offshore wind turbine generator set. By setting the yaw system on the installation column 2, the rotation adjustment of the power generation component is achieved, which has better adjustment flexibility, facilitates adjustment to a better installation position, and is conducive to the completion of offshore installation.

[0174] The embodiment of the present application provides a method for installing an offshore wind turbine generator set. By installing a docking device on a floating foundation, using a compensation device to insert the support tower into the docking cavity of the docking device, and then connecting the support tower to the floating foundation, the docking device can provide a preliminary docking position for the support tower and fix it. At the same time, the compensation device can buffer the hoisting process, overcome the shaking during offshore operations, and make the installation process of the support tower more stable, in line with the offshore operation environment and meet the installation conditions. The compensation device is then used to hoist the power generation component and also form a docking fixation through the docking device, completing the installation operation of the offshore unit. The cooperation between the docking device and the compensation device improves the stability of the offshore hoisting process, has the ability to perform hoisting operations at sea, and reduces the risks during the hoisting process. At the same time, performing installation operations at sea also avoids performing operations at the dock, avoids replacing large cranes and strengthening docks, and saves installation costs.

[0175] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described 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 encompasses all technical solutions within the scope of the claims.

Claims

1. A method for installing an offshore wind turbine generator, wherein, Including: Providing a docking device (100), movably fixing the docking device (100) on a floating foundation (200), the docking device (100) including an annular body (10) and a docking cavity penetrating through itself; Lifting and supporting a tower barrel (500), inserting the supporting tower barrel (500) into the docking cavity and connecting it to the floating foundation (200); Moving the docking device (100) axially along the supporting tower barrel (500) to one end of the supporting tower barrel (500) away from the floating foundation (200) and movably fixing it on the outer wall of the supporting tower barrel (500); Lifting a power generation assembly, the power generation assembly including an impeller, a nacelle (700) and an adapter tower barrel (800) connected to the nacelle (700), inserting the adapter tower barrel (800) into the docking cavity and connecting it to the supporting tower barrel (500).

2. The installation method according to claim 1, wherein, Before the step of lifting and supporting the tower barrel (500), inserting the supporting tower barrel (500) into the docking cavity and connecting it to the floating foundation (200), the installation method further includes: Connecting a compensation device (300) to a lifting tool (400), the lifting tool (400) connecting a lifted object through the compensation device (300); The step of lifting and supporting the tower barrel (500), inserting the supporting tower barrel (500) into the docking cavity and connecting it to the floating foundation (200) includes: Lifting the supporting tower barrel (500) by using the compensation device (300), inserting the supporting tower barrel (500) into the docking cavity and connecting it to the floating foundation (200); The step of lifting the power generation assembly, the power generation assembly including an impeller, a nacelle (700) and an adapter tower barrel (800) connected to the nacelle (700), inserting the adapter tower barrel (800) into the docking cavity and connecting it to the supporting tower barrel (500) includes: Lifting the power generation assembly by using the compensation device (300), inserting the adapter tower barrel (800) into the docking cavity and connecting it to the supporting tower barrel (500).

3. The installation method according to claim 2, wherein, The compensation device (300) includes a fixing mechanism (20) and an adjusting mechanism (30), the adjusting mechanism (30) being arranged on the fixing mechanism (20) and configured to be able to move relative to the fixing mechanism (20) to absorb the sway of the lifted object.

4. The installation method according to claim 2, wherein, After the step of lifting the power generation assembly by using the compensation device (300), inserting the adapter tower barrel (800) into the docking cavity and connecting it to the supporting tower barrel (500), the installation method further includes: Lifting the power generation assembly by using the compensation device (300) and placing it at a predetermined position; Replacing at least some components in the power generation assembly; Lifting the replaced power generation assembly again by using the compensation device (300), inserting the adapter tower barrel (800) into the docking cavity and connecting it to the supporting tower barrel (500).

5. The installation method according to any one of claims 2 to 4, wherein, The support tower barrel (500) includes a plurality of tower barrel segments. The step of hoisting the support tower barrel (500) by using the compensation device (300), inserting the support tower barrel (500) into the docking cavity and connecting it to the floating foundation (200) includes: Hoist the first tower barrel segment (501) by using the compensation device (300), insert the first tower barrel segment (501) into the docking cavity and connect it to the floating foundation (200); Move the docking device (100) along the axial direction to the end of the first tower barrel segment (501) away from the floating foundation (200) and fix it; Hoist the second tower barrel segment (502) by using the compensation device (300), insert the second tower barrel segment (502) into the docking cavity and connect it to the first tower barrel segment (501); Repeat the above steps to hoist the remaining tower barrel segments until all the tower barrel segments are connected to each other to obtain the support tower barrel (500).

6. The installation method according to claim 5, wherein, The docking device (100) includes a limiting body (40). The limiting body (40) is arranged at one end of the annular body (10) and protrudes towards the docking cavity. A limiting protrusion (41) is arranged on the limiting body (40). The tower barrel segment includes a connecting plate protruding from the outer wall, and a connecting hole is arranged on the connecting plate; The step of hoisting the second tower barrel segment (502) by using the compensation device (300), inserting the second tower barrel segment (502) into the docking cavity and connecting it to the first tower barrel segment (501) includes: docking the connecting plate of the second tower barrel segment (502) to the limiting body (40) and inserting the limiting protrusion (41) into the connecting hole, so that the limiting body (40) supports the second tower barrel segment (502).

7. The installation method according to claim 6, wherein, The docking device (100) includes a telescopic assembly (50). One end of the telescopic assembly (50) is connected to the limiting body (40) and the other end is connected to the annular body (10); After the step of docking the connecting plate of the second tower barrel segment (502) to the limiting body (40) and inserting the limiting protrusion (41) into the connecting hole, so that the limiting body (40) supports the second tower barrel segment (502), it further includes: controlling the telescopic assembly (50) to contract towards the docking cavity, so as to drive the limiting body (40) and the second tower barrel segment (502) to move towards the first tower barrel segment (501) until they are docked.

8. The installation method according to claim 6, wherein, The docking device (100) includes a rotating member (60). The rotating member (60) is arranged at one end of the annular body (10) and is connected to the limiting body (40); Before the step of butt-joining the connecting plate of the second tower barrel section (502) to the limiting body (40) and inserting the limiting protrusion (41) into the connecting hole so that the limiting body (40) supports the second tower barrel section (502), it further includes: controlling the rotating member (60) to rotate circumferentially along the first tower barrel section (501) to drive the limiting body (40) to rotate until the butt-joint reference line of the limiting body (40) matches the butt-joint reference line of the first tower barrel section (501).

9. The installation method according to claim 3, wherein, The compensation device (300) includes a rotating member (70), and the rotating member (70) is connected to the adjusting mechanism (30) and is configured to drive the adjusting mechanism (30) to rotate; The step of hoisting the second tower barrel section (502) by using the compensation device (300), inserting the second tower barrel section (502) into the docking cavity and connecting it to the first tower barrel section (501) includes: driving the adjusting mechanism (30) to rotate by using the rotating member (70) to drive the second tower barrel section (502) to rotate until the butt-joint reference line of the second tower barrel section (502) matches the butt-joint reference line of the first tower barrel section (501).

10. The installation method according to any one of claims 1 to 4, wherein, The docking device (100) includes a locking member (80), and the locking member (80) is arranged on the annular body (10); The step of axially moving the docking device (100) along the support tower barrel (500) to the end of the support tower barrel (500) away from the floating foundation (200) and fixing it includes: fixing the docking device (100) on the support tower barrel (500) by using the locking member (80).

11. The installation method according to claim 10, wherein, The locking member (80) includes a fixing pin, and a moving guide rail is provided on the outer wall of the support tower barrel (500), and a positioning hole is provided on the moving guide rail; The step of axially moving the docking device (100) along the support tower barrel (500) to the end of the support tower barrel (500) away from the floating foundation (200) and fixing it includes: after moving the docking device (100) along the moving guide rail to the end of the support tower barrel (500) away from the floating foundation (200), inserting the fixing pin into the positioning hole to fix the docking device (100) on the support tower barrel (500).

12. The installation method according to any one of claims 1 to 4, wherein, The annular body (10) includes a first ring body (11) and a second ring body (12) that are movably connected, and the first ring body (11) and the second ring body (12) enclose the adjustable docking cavity. The step of axially moving the docking device (100) along the support tower barrel (500) to the end of the support tower barrel (500) away from the floating foundation (200) and fixing it includes: fixing the second ring body (12) and moving the first ring body (11) axially toward the side gradually away from the second ring body (12), wherein the space of the docking cavity is adjusted; After the first ring body (11) moves to one end of the support tower barrel (500) away from the floating foundation (200), fix the first ring body (11) and move the second ring body (12) axially towards the side gradually approaching the first ring body (11); After the second ring body (12) moves to one end of the support tower barrel (500) away from the floating foundation (200), fix the second ring body (12) and enclose with the first ring body (11) to form an adjusted docking cavity.

13. The installation method according to claim 3, wherein, The compensation device (300) includes a sling (90), the sling (90) is connected to the adjusting mechanism (30) and its position on the adjusting mechanism (30) is adjustable. The steps of hoisting the support tower barrel (500) by using the compensation device (300), inserting the support tower barrel (500) into the docking cavity and connecting it with the floating foundation (200) include: Adjust the position of the sling (90) relative to the adjusting mechanism (30) so that the sling (90) has the same extending direction as the support tower barrel (500); Connect the sling (90) with the support tower barrel (500) and hoist the support tower barrel (500).

14. The installation method according to any one of claims 2 to 4, wherein, Before the steps of hoisting the power generation assembly by using the compensation device (300), inserting the connection tower barrel (800) into the docking cavity and connecting it with the support tower barrel (500), it further includes: Provide an installation platform (1), and an installation column (2) is arranged on the installation platform (1); Hoist the machine head onto the installation column (2), the machine head includes the nacelle (700), the hub connected to the nacelle (700) and the connection tower barrel (800), and the machine head is connected to the installation column (2) through the connection tower barrel (800); Hoist a plurality of blades (600) onto the hub to obtain the impeller.

15. The installation method according to claim 14, wherein, A plurality of connection ports are arranged on the hub. The steps of hoisting a plurality of blades (600) onto the hub to obtain the impeller include: Rotate the hub so that the opening of any one of the connection ports faces the horizontal direction; Hoist any one of the blades (600) horizontally to the connection port; Repeat the above process to hoist each of the plurality of blades (600) to each of the plurality of connection ports.

16. The installation method according to claim 14, wherein, The machine head further includes a yaw system. The machine head is connected to the installation column (2) through the yaw system. After the steps of hoisting a plurality of blades (600) onto the hub to obtain the impeller, it further includes: use the yaw system to rotate the nacelle (700) and the impeller, and the impeller has a hoisting space.

Images