A floating type fan blade quick dismounting device and method

Abstract

The application provides a floating type fan blade quick dismounting device and method, the quick dismounting device comprises a cabin guide pulley set, a hub guide assembly, a blade root guide assembly and a traction assembly, the cabin guide pulley set is arranged in the fan cabin, the hub guide assembly is detachably arranged in the fan hub, the hub guide assembly is provided with a first pulley set, the blade root guide assembly is detachably connected to the fan blade root, the blade root guide assembly is provided with a second pulley set, the traction assembly comprises a traction device and a traction rope, the traction device is arranged at the bottom of the fan tower, one end of the traction rope is connected to the traction device, and the other end of the traction rope is connected to the hub guide assembly after being wound between the cabin guide pulley set and the first pulley set and the second pulley set. Compared with the prior art, the application simplifies the dismounting process of the fan blade, reduces the dismounting time of the fan blade, can reduce the dependence on large cranes and operation windows and save installation expenses.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a device and method for quick assembly and disassembly of floating wind turbine blades. Background Technology

[0002] As the power generation capacity of floating wind turbines continues to increase, the size and weight of the turbine blades are also constantly increasing, rapidly raising the difficulty of installation and dismantling. Simultaneously, due to the increased distance from shore, blade replacement for large offshore wind farms has become a primary constraint on wind turbine operation and maintenance. Furthermore, current technologies commonly rely on large offshore cranes for blade replacement, which is not only limited by the time window for deployment but also significantly increases the economic cost of wind farm operation and maintenance.

[0003] Therefore, how to quickly complete the installation and disassembly of wind turbine blades, effectively reduce the costs of commissioning and long-term operation and maintenance of floating wind turbines, and thus improve the overall working efficiency of wind turbines, is not only an important technical issue for the commissioning of new floating wind turbines, but also a core technical issue for the operation and maintenance of existing floating wind turbines. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a device and method for the rapid installation and removal of floating wind turbine blades, which can quickly complete the installation and removal of floating wind turbine blades and effectively reduce the costs of commissioning and long-term operation and maintenance of floating wind turbines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a quick-release and assembly device for floating wind turbine blades, comprising:

[0007] A nacelle guide pulley assembly, comprising a plurality of fixed pulleys spaced apart inside the wind turbine nacelle;

[0008] A hub guide assembly, which is detachably installed inside the wind turbine hub, and has a first pulley group on the hub guide assembly;

[0009] A blade root guide assembly, which is detachably connected to the blade root of the wind turbine blade, and has a second pulley assembly.

[0010] The traction assembly includes a traction device and a traction rope. The traction device is located at the bottom of the wind turbine tower. One end of the traction rope is connected to the traction device, and the other end of the traction rope is wound around the nacelle guide pulley group and between the first pulley group and the second pulley group before being connected to the hub guide assembly.

[0011] Preferably, the cabin guide pulley assembly includes two fixed pulleys.

[0012] Preferably, the first pulley group includes a first pulley, a second pulley, a third pulley, and a fourth pulley arranged in a rectangular shape, and the second pulley group includes a fifth pulley, a sixth pulley, a seventh pulley, and an eighth pulley respectively arranged in a one-to-one correspondence with the first pulley, the second pulley, the third pulley, and the fourth pulley.

[0013] Preferably, the traction rope is wound around the cabin guide pulley group, and then sequentially wound around the first pulley, the fifth pulley, the second pulley, the sixth pulley, the third pulley, the seventh pulley, the fourth pulley, and the eighth pulley before being connected to the hub guide assembly.

[0014] Preferably, the hub guide assembly includes a support frame and a hub pulley plate. The support frame is detachably installed inside the wind turbine hub, and the hub pulley plate is fixedly installed on the support frame. The first pulley group is disposed on the hub pulley plate.

[0015] Preferably, the blade root guide assembly includes a connecting plate, a connecting rod, and a blade root pulley plate. The connecting plate is detachably connected to the flange of the blade root of the wind turbine blade. One end of the connecting rod is hinged to the connecting plate, and the other end of the connecting rod is connected to the blade root pulley plate. The second pulley group is disposed on the blade root pulley plate.

[0016] Preferably, one end of the connecting rod is hinged to the connecting plate via a ball joint or universal joint.

[0017] Preferably, the traction device is a winch.

[0018] Secondly, the present invention provides a method for rapid installation of floating wind turbine blades, which uses a rapid installation and removal device for floating wind turbine blades as described in the first aspect above to install the floating wind turbine blades, including the following steps:

[0019] After rotating the wind turbine hub so that one of its blade interfaces faces vertically downwards, the wind turbine hub is then positioned to limit its movement.

[0020] The hub guide assembly and the blade root guide assembly are respectively installed inside the wind turbine hub and at the root of the wind turbine blade to be installed.

[0021] One end of the traction rope is connected to the traction device, and the other end of the traction rope is wound around the cabin guide pulley group and between the first pulley group and the second pulley group, and then connected to the hub guide assembly.

[0022] The wind turbine blades to be installed are gradually lifted using the traction device and the traction rope until the blade root guide assembly enters the wind turbine hub.

[0023] Assemble the wind turbine hub and the wind turbine blades to be installed;

[0024] After assembly, remove the hub guide assembly and the blade root guide assembly;

[0025] Repeat the above steps until the installation of all wind turbine blades is completed.

[0026] Thirdly, the present invention provides a method for quick disassembly of floating wind turbine blades, which uses a quick disassembly and assembly device for floating wind turbine blades as described in the first aspect above to disassemble the floating wind turbine blades, including the following steps:

[0027] After rotating the wind turbine hub so that one of the wind turbine blades points vertically downwards, the wind turbine hub is then positioned to a limit.

[0028] The hub guide assembly and the blade root guide assembly are respectively installed inside the wind turbine hub and at the root of the wind turbine blade to be disassembled.

[0029] One end of the traction rope is connected to the traction device, and the other end of the traction rope is wound around the cabin guide pulley group and between the first pulley group and the second pulley group, and then connected to the hub guide assembly.

[0030] The fan blades to be disassembled are detached from the fan hub;

[0031] The wind turbine blades to be disassembled are gradually lowered using the traction device and the traction rope.

[0032] After the lowering is completed, the hub guide assembly and the blade root guide assembly are disassembled;

[0033] Repeat the above steps until all wind turbine blades have been disassembled.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] (1) Compared to the previous large floating wind turbines where the installation and replacement of turbine blades could only be completed at a dock using a large crane or at sea using a large floating crane, this invention achieves the traction of wind turbine blades through a nacelle guide pulley block with a pulley mechanism, a hub guide assembly, and a blade root guide assembly, and uses a low-power traction assembly to provide power, thus solving the dependence of floating wind turbine blade installation and removal on site and large cranes. At the same time, the hub guide assembly and blade root guide assembly of this invention effectively restrict the movement of wind turbine blades during installation and replacement, improving the accuracy of installation alignment.

[0036] (2) Compared to the previous method of mobilizing large cranes or large floating cranes at sea for wind turbine blade installation, this invention uses a method powered by the internal devices and structure of the wind turbine, which effectively improves the efficiency of wind turbine blade installation and replacement, solves the problems of long disassembly and assembly time and strong dependence on environmental windows in existing wind turbine blade solutions, and significantly reduces wind turbine operation and maintenance costs. At the same time, this invention can also detach wind turbine blades in emergency situations, improving the overall safety of floating wind turbines. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. It should be noted that in all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0038] Figure 1 This is a schematic diagram of the overall structure of the floating wind turbine blade quick-assembly and disassembly device described in an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0040] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0041] Figure 4 This is a schematic diagram of the overall structure of the hub guide assembly of the floating wind turbine blade quick-release and assembly device described in this embodiment of the invention;

[0042] Figure 5 This is a side view of the overall structure of the hub guide assembly of the floating wind turbine blade quick-release device described in this embodiment of the invention;

[0043] Figure 6 This is a schematic diagram of the overall structure of the blade root guide assembly of the floating wind turbine blade quick disassembly and assembly device described in this embodiment of the invention;

[0044] Figure 7 This is a schematic diagram of the traction rope winding of the floating wind turbine blade quick-release and assembly device described in this embodiment of the invention;

[0045] Figure 8 This is a schematic diagram illustrating the process of installing wind turbine blades using the floating wind turbine blade quick-release and installation device described in this embodiment of the invention.

[0046] In the picture:

[0047] 1. Nacelle guide pulley block; 2. Hub guide assembly; 21. First pulley block; 211. First pulley; 212. Second pulley; 213. Third pulley; 214. Fourth pulley; 22. Support frame; 23. Hub pulley disc; 3. Blade root guide assembly; 31. Second pulley block; 311. Fifth pulley; 312. Sixth pulley; 313. Seventh pulley; 314. Eighth pulley; 32. Connecting plate; 33. Connecting rod; 34. Blade root pulley disc; 4. Traction assembly; 41. Traction device; 42. Traction rope; 5. Wind turbine nacelle; 6. Wind turbine hub; 7. Wind turbine blades; 8. Wind turbine tower. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., used to define components are merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] As the power generation capacity of floating wind turbines continues to increase, the size and weight of the turbine blades are also constantly increasing, rapidly raising the difficulty of installation and dismantling. Simultaneously, due to the increased distance from shore, replacing turbine blades using large offshore cranes is not only limited by the time window for deployment but also significantly increases the economic cost of wind farm operation and maintenance. This makes turbine blade replacement a primary issue restricting wind turbine operation and maintenance in large offshore wind farms. Therefore, this invention provides a device and method for rapid installation and dismantling of floating wind turbine blades, which can quickly complete the installation and dismantling of floating wind turbine blades, effectively reducing the costs of commissioning and long-term operation and maintenance of floating wind turbines.

[0052] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0053] Example 1

[0054] like Figures 1-7 As shown, this embodiment of the invention provides a quick-assembly and disassembly device for floating wind turbine blades, comprising:

[0055] The nacelle guide pulley assembly 1 includes a number of fixed pulleys spaced apart inside the wind turbine nacelle 5.

[0056] Hub guide assembly 2, which is detachably installed inside the wind turbine hub 6, has a first pulley group 21 on it;

[0057] The blade root guide assembly 3 is detachably connected to the blade root of the fan blade 7, and the blade root guide assembly 3 has a second pulley group 31.

[0058] The traction assembly 4 includes a traction device 41 and a traction rope 42. The traction device 41 is located at the bottom of the wind turbine tower 8. One end of the traction rope 42 is connected to the traction device 41, and the other end of the traction rope 42 is wound around the nacelle guide pulley block 1 and the first pulley block 21 and the second pulley block 31 and then connected to the hub guide assembly 2.

[0059] In this embodiment, when assembling and disassembling the wind turbine blade 7, the hub guide assembly 2 and the blade root guide assembly 3 are first installed inside the wind turbine hub 6 and the wind turbine blade 7, respectively. Then, the end of the traction rope 42 away from the traction device 41 is wound around the nacelle guide pulley block 1 and the first pulley block 21 and the second pulley block 31, and then connected to the hub guide assembly 2. Finally, the traction device 41 pulls the traction rope 42 to lower or raise the wind turbine blade 7, thereby achieving rapid assembly and disassembly of the wind turbine blade 7. The hub guide assembly 2 and the blade root guide assembly 3 effectively restrict the movement of the wind turbine blade 7 during installation and replacement, improving the accuracy of installation alignment.

[0060] As can be seen from the above, this embodiment achieves the traction of the wind turbine blades 7 through the nacelle guide pulley block 1, hub guide assembly 2, and blade root guide assembly 3 with pulley mechanisms, and provides power using a low-power traction assembly 4, thus solving the dependence of floating wind turbine blades on site and large cranes for installation and removal. On the other hand, by adopting a method of providing power from the internal devices and structure of the wind turbine, the installation and replacement efficiency of the wind turbine blades 7 is effectively improved, solving the problems of long installation and removal time and strong dependence on environmental windows in existing wind turbine blades 7. This can significantly reduce the wind turbine operation and maintenance costs, and can also release the wind turbine blades 7 in emergency situations, improving the overall safety of the floating wind turbine.

[0061] In addition, the nacelle guide pulley block 1, the first pulley block 21 and the second pulley block 31 in this embodiment can reduce the limitation on the lifting capacity of the traction device 41 during the installation and disassembly of the wind turbine blades 7.

[0062] Preferably, the cabin guide pulley assembly 1 in this embodiment includes two fixed pulleys. Of course, in other embodiments of the present invention, the number of fixed pulleys in the cabin guide pulley assembly 1 is not limited to two. For example, in some specific embodiments, the number of fixed pulleys in the cabin guide pulley assembly 1 may be one, three, four, five or more.

[0063] Furthermore, such as Figure 7 As shown, the first pulley group 21 includes a first pulley 211, a second pulley 212, a third pulley 213, and a fourth pulley 214 arranged in a rectangle. The second pulley group 31 includes a fifth pulley 311, a sixth pulley 312, a seventh pulley 313, and an eighth pulley 314 respectively, which are arranged in a one-to-one correspondence with the first pulley 211, the second pulley 212, the third pulley 213, and the fourth pulley 214.

[0064] Specifically, the traction rope 42 is wound around the engine room guide pulley block 1, and then sequentially wound around the first pulley 211, the fifth pulley 311, the second pulley 212, the sixth pulley 312, the third pulley 213, the seventh pulley 313, the fourth pulley 214 and the eighth pulley 314 before being connected to the hub guide assembly 2.

[0065] It is understood that the number of pulleys in the first pulley group 21 and the second pulley group 31 of the present invention, as well as the winding method of the traction rope 42, are not limited to the above-mentioned number and winding method, as long as the lifting and lowering of the fan blade 7 can be achieved smoothly.

[0066] Furthermore, such as Figure 4 and Figure 5 As shown, the hub guide assembly 2 includes a support frame 22 and a hub pulley 23. The support frame 22 is detachably installed inside the wind turbine hub 6, and the hub pulley 23 is fixedly installed on the support frame 22. The first pulley group 21 is arranged on the hub pulley 23. The support frame 22 is detachably connected to the inside of the wind turbine hub 6 by bolts.

[0067] like Figure 6 As shown, the blade root guide assembly 3 includes a connecting plate 32, a connecting rod 33, and a blade root pulley plate 34. The connecting plate 32 is detachably connected to the flange at the root of the wind turbine blade 7. One end of the connecting rod 33 is hinged to the connecting plate 32, and the other end of the connecting rod 33 is connected to the blade root pulley plate 34. A second pulley group 31 is disposed on the blade root pulley plate 34. The connecting plate 32 is detachably connected to the flange at the root of the wind turbine blade 7 by bolts.

[0068] In this embodiment, the blade root guide assembly 3 has its blade root pulley 34 hinged to the connecting plate 32 via a connecting rod 33. This allows the blade root guide assembly 3 to be aligned with the blade interface during the installation of the wind turbine blade 7, enabling the wind turbine blade 7 to accurately dock with the wind turbine hub 6, thereby further improving the installation efficiency of this embodiment.

[0069] Preferably, one end of the connecting rod is hinged to the connecting plate via a ball joint or universal joint.

[0070] Optionally, the traction device 41 is a winch. Of course, in this embodiment, the traction device 41 can also be other conventional equipment such as a hoist.

[0071] Example 2

[0072] like Figure 8 As shown, this embodiment of the invention provides a method for rapid installation of floating wind turbine blades, which uses a rapid installation and removal device for floating wind turbine blades as provided in Embodiment 1 to install the floating wind turbine blades, including the following steps:

[0073] S1. Rotate the wind turbine hub 6 so that one of its blade interfaces faces vertically downwards, and then limit the wind turbine hub 6;

[0074] S2. Install the hub guide assembly 2 and the blade root guide assembly 3 into the inside of the wind turbine hub 6 and the root of the wind turbine blade 7 to be installed, respectively;

[0075] S3. Connect one end of the traction rope 42 to the traction device 41, and then connect the other end of the traction rope 42 to the hub guide assembly 2 after winding it around the engine compartment guide pulley group 1 and the first pulley group 211 and the second pulley group 212.

[0076] S4. Gradually lift the wind turbine blades 7 to be installed using the traction device 41 and traction rope 42 until the blade root guide assembly 3 enters the wind turbine hub 6.

[0077] S5. Assemble the wind turbine hub 6 and the wind turbine blades 7 to be installed;

[0078] S6. After assembly, remove hub guide assembly 2 and blade root guide assembly 3;

[0079] S7. Repeat the above steps until the installation of all wind turbine blades 7 is completed.

[0080] The present invention uses the floating wind turbine blade quick disassembly and assembly device provided in Embodiment 1 to install floating wind turbine blades, which reduces the restrictions on the working conditions for wind turbine blade 7 installation. The installation of wind turbine blade 7 can be completed at the dock or in the sea area where the wind turbine is in service via an installation vessel.

[0081] Preferably, in this embodiment, the installation of the wind turbine blades 7 can be carried out under relatively mild weather conditions in the marine environment, and the installation of anti-collision structures can be used to prevent the floating wind turbine from colliding with the dock or installation vessel during the installation process.

[0082] Furthermore, a small crane is installed on the dock or the deck of the installation vessel. The small crane can assist in lifting the middle and rear parts of the wind turbine blade 7 when the traction assembly 4 lifts the root of the wind turbine blade 7. This can prevent the wind turbine blade 7 from directly contacting the dock ground or the deck of the installation vessel during installation, and can also correct the attitude of the wind turbine blade 7 during the lifting process, reducing the dependence on large cranes.

[0083] Specifically, in this embodiment, when the root of the wind turbine blade 7 is lifted to the interface position of the wind turbine hub 6, the wind turbine blade 7 is detached from the small crane.

[0084] Example 3

[0085] This invention provides a method for quickly disassembling floating wind turbine blades, which uses a floating wind turbine blade quick disassembly and assembly device as provided in Embodiment 1 to disassemble the floating wind turbine blades, including the following steps:

[0086] S1. Rotate the fan hub 6 so that one of the fan blades 7 is vertically downward, and then limit the fan hub 6;

[0087] S2. Install the hub guide assembly 2 and the blade root guide assembly 3 into the inside of the wind turbine hub 6 and the root of the wind turbine blade 7 to be disassembled, respectively;

[0088] S3. Connect one end of the traction rope 42 to the traction device 41, and then connect the other end of the traction rope 42 to the hub guide assembly 2 after winding it around the engine compartment guide pulley group 1 and the first pulley group 211 and the second pulley group 212.

[0089] S4. Remove the fan blades 7 to be disassembled from the fan hub 6;

[0090] S5. The fan blades 7 to be disassembled are gradually lowered using the traction device 41 and traction rope 42;

[0091] S6. After the lowering is completed, remove the hub guide assembly 2 and the blade root guide assembly 3;

[0092] S7. Repeat the above steps until the disassembly of all wind turbine blades 7 is completed.

[0093] The present invention uses the floating wind turbine blade quick disassembly and assembly device provided in Embodiment 1 to disassemble the floating wind turbine blades, which reduces the restrictions on the working conditions for disassembling the wind turbine blades 7. The disassembly of the wind turbine blades 7 can be completed at the dock or in the sea area where the wind turbine is in service via the installation vessel.

[0094] Preferably, in this embodiment, the wind turbine blades 7 can be disassembled under relatively mild weather conditions in the marine environment, and anti-collision structures can be installed to prevent the floating wind turbine from colliding with the dock or installation vessel during the disassembly process.

[0095] Furthermore, a small crane is installed on the dock or the deck of the installation vessel. The small crane can assist in lowering the middle and rear parts of the wind turbine blade 7 when the traction assembly 4 lowers the blade root. This can prevent the wind turbine blade 7 from directly contacting the dock ground or the deck of the installation vessel during dismantling, and can also correct the attitude of the wind turbine blade 7 during the lowering process, reducing the reliance on large cranes.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-assembly and disassembly device for floating wind turbine blades, characterized in that, include: The nacelle guide pulley assembly (1) includes a number of fixed pulleys spaced apart inside the wind turbine nacelle (5); Hub guide assembly (2), which is detachably installed inside the wind turbine hub (6), and has a first pulley group (21) on the hub guide assembly (2); The blade root guide assembly (3) is detachably connected to the blade root of the fan blade (7) and has a second pulley assembly (31). The traction assembly (4) includes a traction device (41) and a traction rope (42). The traction device (41) is located at the bottom of the wind turbine tower (8). One end of the traction rope (42) is connected to the traction device (41), and the other end of the traction rope (42) is wound around the nacelle guide pulley group (1) and the first pulley group (21) and the second pulley group (31) and then connected to the hub guide assembly (2). The first pulley group (21) includes a first pulley (211), a second pulley (212), a third pulley (213), and a fourth pulley (214) arranged in a rectangular shape. The second pulley group (31) includes a fifth pulley (311), a sixth pulley (312), a seventh pulley (313), and an eighth pulley (314) respectively arranged in a one-to-one correspondence with the first pulley (211), the second pulley (212), the third pulley (213), and the fourth pulley (214). The traction rope (42) is wound around the cabin guide pulley group (1), and then wound around the first pulley (211), the fifth pulley (311), the second pulley (212), the sixth pulley (312), the third pulley (213), the seventh pulley (313), the fourth pulley (214) and the eighth pulley (314) in sequence before being connected to the hub guide assembly (2); The hub guide assembly (2) includes a support frame (22) and a hub pulley disc (23). The support frame (22) is detachably installed inside the wind turbine hub (6). The hub pulley disc (23) is fixedly installed on the support frame (22). The first pulley group (21) is arranged on the hub pulley disc (23). The hub guide assembly (2) includes a support frame (22) and a hub pulley disc (23). The support frame (22) is detachably installed inside the wind turbine hub (6). The hub pulley disc (23) is fixedly installed on the support frame (22). The first pulley group (21) is arranged on the hub pulley disc (23). The blade root guide assembly (3) includes a connecting plate (32), a connecting rod (33), and a blade root pulley plate (34). The connecting plate (32) is detachably connected to the flange of the blade root of the fan blade (7). One end of the connecting rod (33) is hinged to the connecting plate (32), and the other end of the connecting rod (33) is connected to the blade root pulley plate (34). The second pulley group (31) is disposed on the blade root pulley plate (34).

2. The floating wind turbine blade quick-release and assembly device as described in claim 1, characterized in that, The cabin guide pulley assembly (1) includes two fixed pulleys.

3. The floating wind turbine blade quick-assembly and disassembly device as described in claim 1, characterized in that, One end of the connecting rod (33) is hinged to the connecting plate (32) via a ball joint or universal joint.

4. The floating wind turbine blade quick-release and assembly device as described in claim 1, characterized in that, The traction device (41) is a winch.

5. A method for rapid installation of floating wind turbine blades, characterized in that, The installation of floating wind turbine blades using the quick-release and installation device for floating wind turbine blades as described in any one of claims 1-4 includes the following steps: Rotate the wind turbine hub (6) so that one of its blade interfaces is vertically downward, and then limit the wind turbine hub (6); The hub guide assembly (2) and the blade root guide assembly (3) are respectively installed inside the wind turbine hub (6) and at the root of the wind turbine blade (7) to be installed; One end of the traction rope (42) is connected to the traction device (41), and the other end of the traction rope (42) is wound around the cabin guide pulley group (1) and between the first pulley group (21) and the second pulley group (31) and then connected to the hub guide assembly (2). The wind turbine blade (7) to be installed is gradually lifted by the traction device (41) and the traction rope (42) until the blade root guide assembly (3) enters the wind turbine hub (6); Assemble the wind turbine hub (6) and the wind turbine blades (7) to be installed; After assembly, remove the hub guide assembly (2) and the blade root guide assembly (3); Repeat the above steps until the installation of all wind turbine blades (7) is completed.

6. A method for quick disassembly of floating wind turbine blades, characterized in that, The disassembly of floating wind turbine blades using the quick disassembly and assembly device for floating wind turbine blades as described in any one of claims 1-4 includes the following steps: After rotating the fan hub (6) so that one of the fan blades (7) is vertically downward, the fan hub (6) is then positioned. The hub guide assembly (2) and the blade root guide assembly (3) are respectively installed inside the wind turbine hub (6) and at the root of the wind turbine blade (7) to be disassembled; One end of the traction rope (42) is connected to the traction device (41), and the other end of the traction rope (42) is wound around the cabin guide pulley group (1) and between the first pulley group (21) and the second pulley group (31) and then connected to the hub guide assembly (2). The fan blades (7) to be disassembled are detached from the fan hub (6); The wind turbine blades (7) to be disassembled are gradually lowered using the traction device (41) and the traction rope (42); After the lowering is completed, the hub guide assembly (2) and the blade root guide assembly (3) are disassembled; Repeat the above steps until all the fan blades (7) have been disassembled.

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