Blade installation system and method for wind turbine generator in floating offshore wind power system

Abstract

Disclosed in the present application is a blade installation system and method for a wind turbine generator in a floating offshore wind power system. The blade installation system comprises a nacelle gripper, a blade gripper and a lifting installation vessel, wherein the nacelle gripper comprises a gripping housing and a plurality of telescopic tightening block assemblies; the blade gripper comprises a gripping cylinder which is arranged on a front outer side surface of the gripping housing and can slide left and right, the inner circumferential surface of the gripping cylinder being provided with a plurality of telescopic driving wheel assemblies; a crane on the lifting installation vessel is configured to hoist the nacelle gripper to or away from a nacelle, and the plurality of telescopic tightening block assemblies cooperate to grip or release the nacelle; and the crane is further configured to hoist a blade root into the gripping cylinder in an open state, the plurality of telescopic driving wheel assemblies cooperate to grip or release the blade root, and the plurality of telescopic driving wheel assemblies cooperate to horizontally drive the gripped blade root from the front to the rear into a mounting hole of a hub. At a working sea area, the blade root can be conveniently mounted in the mounting hole of the hub; the installation difficulty is low.

Description

Blade mounting system and method for wind turbine in floating offshore wind power system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202410411843.4, filed on April 8, 2024, and entitled “Blade mounting system and method for wind turbine in floating offshore wind power system”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application belongs to the technical field of offshore wind power generation, and specifically relates to a blade mounting system and method for wind turbine in floating offshore wind power system. BACKGROUND

[0004] Offshore wind energy belongs to renewable energy and can be used for power generation. The wind resources on the sea are more stable because the wind speed on the sea is higher and more constant, and the impact on the ecology is smaller.

[0005] The foundation of the current mainstream offshore wind power system is fixed, and accordingly a fixed offshore wind power system is formed. The fixed offshore wind power system is mainly arranged at a shallow water area of a sea area. However, the shallow water area of the sea area is limited in most countries and regions in the world, and the development of the fixed offshore wind power system is limited. The foundation of the floating offshore wind power system floats in seawater. Therefore, the floating offshore wind power system is more suitable for being arranged at a deep water area of a sea area. Thus, the floating offshore wind power system becomes one of the main choices for utilizing offshore wind resources in the future and is also the direction of the development of the offshore wind power industry in various countries.

[0006] Although the development prospect of the floating offshore wind power is promising, the development of the floating offshore wind power has been steadily advancing for more than ten years. However, the cost and technical difficulty still limit the large-scale commercial application of the floating offshore wind power. In recent years, industry research has found that the foundation construction, mooring system, construction installation and wind turbine operation and maintenance account for the main part of the cost of the floating offshore wind power system in the process of large-scale commercial popularization and application of the floating offshore wind power system. The total cost of the construction installation and the wind turbine operation and maintenance accounts for more than 25%.

[0007] At present, for the small megawatt floating offshore wind power system, the blades of the wind turbine in the small megawatt floating offshore wind power system are mainly installed on a wharf because the small megawatt floating offshore wind power system is relatively light, the draft is relatively shallow, and the size is relatively small. For the large megawatt floating offshore wind power system, the number of wharfs that meet the requirements is less because the large megawatt floating offshore wind power system is getting heavier, the draft is getting deeper, and the size is getting larger. In addition, the safety of the long-distance towing of the high-rise large megawatt floating offshore wind power system is low after the installation of the blades on the wharf.

[0008] In summary, for the large megawatt floating offshore wind power system, it is more suitable to install the blade at the working sea area, and since the wind turbine of the large megawatt floating offshore wind power system is in a floating state above the sea surface, and the hoisting installation ship for installing the blade is also in a floating state on the sea surface, the wind turbine and the hoisting installation ship are in a relative motion state, and it is difficult to directly hoist the blade by the crane on the hoisting installation ship and align the blade root with the installation hole of the hub of the wind turbine, so it is difficult to directly hoist the blade by the crane and directly insert and install the blade root into the installation hole of the hub of the wind turbine.

[0009] SUMMARY

[0010] In view of the defects of the prior art, the present application provides a blade installation system and method for a wind turbine of a floating offshore wind power system, which can conveniently install the blade root into the installation hole of the hub at the working sea area, and has small installation difficulty.

[0011] The technical scheme adopted by the present application to solve the technical problems is:

[0012] A blade installation system for a wind turbine of a floating offshore wind power system, the floating offshore wind power system comprising a foundation, a tower drum and a wind turbine, the wind turbine comprising a nacelle, a hub and a blade with a cylindrical root, the hub being arranged at the right end of the nacelle, and an installation hole of the hub being arranged horizontally along the front-rear direction;

[0013] The blade installation system comprises a nacelle gripper, a blade gripper and a hoisting installation ship; the nacelle gripper comprises a gripper shell with openings at the left end, the right end and the lower end, and a plurality of telescopic jacking block assemblies are arranged on the inner surface of the gripper shell; the blade gripper comprises a gripper cylinder arranged horizontally along the front-rear direction, the gripper cylinder being arranged at the front outer side of the gripper shell and being capable of sliding horizontally left and right relative to the gripper shell, and a plurality of telescopic drive wheel assemblies are arranged on the inner circumferential surface of the gripper cylinder; the crane on the hoisting installation ship is used to hoist the nacelle gripper to or away from the nacelle, and the plurality of telescopic jacking block assemblies are used in cooperation to grip or release the nacelle, the crane is also used to hoist the blade root into the gripper cylinder in an open state, the gripper cylinder is closed and the plurality of telescopic drive wheel assemblies are used in cooperation to grip or release the blade root, the gripper cylinder is slid to the right to be opposite to the installation hole of the hub, and the plurality of telescopic drive wheel assemblies are used in cooperation to horizontally drive the gripped blade root from front to back into the installation hole of the hub.

[0014] Optionally, the embracing cylinder comprises a first segment, a second segment and a third segment, the first segment is a left half of the embracing cylinder, the second segment and the third segment are formed by splitting a right half of the embracing cylinder into two, the first segment is hinged with the second segment through an upper hinge shaft arranged horizontally along the front-back direction between the right upper end of the first segment and the left upper end of the second segment, the first segment is hinged with the third segment through a lower hinge shaft arranged horizontally along the front-back direction between the right lower end of the first segment and the left lower end of the third segment, the right lower end of the second segment and the right upper end of the third segment are locked through a closure lock, and the embracing cylinder is opened by opening the closure lock.

[0015] Optionally, the closure lock comprises an upper clamping member fixed at the right lower end of the second segment and a lower clamping member fixed at the right upper end of the third segment, the upper clamping member and the lower clamping member are clamped with each other, and the upper clamping member and the lower clamping member are locked through a hydraulic telescopic locking rod, the hydraulic telescopic locking rod is extended into the upper through hole of the upper clamping member and the lower through hole of the lower clamping member at the same time, the upper clamping member and the lower clamping member clamped with each other are locked, and the embracing cylinder is closed, or the hydraulic telescopic locking rod is retracted from the upper through hole and the lower through hole, the lower clamping member is separated from the upper clamping member by gravity, and the embracing cylinder is opened.

[0016] Optionally, each of the telescopic driving wheel assemblies has the same structure and size, each of the telescopic driving wheel assemblies comprises a first hydraulic rod whose axis is perpendicular to the axis of the embracing cylinder, a driving wheel is arranged at the free end of the first hydraulic rod and can rotate relative to the first hydraulic rod, the center line of the driving wheel is perpendicular to the axis of the corresponding first hydraulic rod, and the driving wheel is driven to rotate by a rotary power source fixed to the corresponding first hydraulic rod; the plurality of first hydraulic rods are synchronously extended by the same length and drive the roots of the blades through the driving wheels, or the plurality of first hydraulic rods are synchronously retracted by the same length to move away from the roots of the blades and release the roots of the blades, and the plurality of driving wheels are synchronously rotated relative to the corresponding first hydraulic rods and drive the embraced roots of the blades into the mounting holes of the wheel hubs from front to back.

[0017] Optionally, each of the telescopic driving wheel assemblies has the same structure and size, each of the telescopic driving wheel assemblies comprises a first hydraulic rod whose axis is perpendicular to the axis of the embracing cylinder, a driving wheel is arranged at the free end of the first hydraulic rod and can rotate relative to the first hydraulic rod, the center line of the driving wheel is perpendicular to the axis of the corresponding first hydraulic rod, and the driving wheel is driven to rotate by a rotary power source fixed to the corresponding first hydraulic rod; the plurality of first hydraulic rods are synchronously extended by the same length and drive the roots of the blades through the driving wheels, or the plurality of first hydraulic rods are synchronously retracted by the same length to move away from the roots of the blades and release the roots of the blades, and the plurality of driving wheels are synchronously rotated relative to the corresponding first hydraulic rods and drive the embraced roots of the blades into the mounting holes of the wheel hubs from front to back.

[0018] Optionally, the holding shell is cuboid and the length direction is left-right horizontal direction, part of the telescopic top block assemblies are arranged on the front inner side of the holding shell and are called front telescopic top block assemblies, another part of the telescopic top block assemblies are arranged on the rear inner side of the holding shell and are called rear telescopic top block assemblies, and the remaining telescopic top block assemblies are arranged on the top inner surface of the holding shell and are called top telescopic top block assemblies, the second hydraulic rods of the front telescopic top block assemblies and the rear telescopic top block assemblies are horizontally arranged in the front-rear direction, and the second hydraulic rods of the top telescopic top block assemblies are vertical.

[0019] Optionally, the front outer side of the holding shell is provided with an upper slide rail and a lower slide rail which are horizontally arranged in the left-right direction, the upper slide rail and the lower slide rail are arranged symmetrically in the up-down direction, the rear end upper part of the holding cylinder is provided with two upper pulleys and the rear end lower part is provided with two lower pulleys, the two upper pulleys are slidingly arranged in the upper slide rail, and the two lower pulleys are slidingly arranged in the lower slide rail; the holding cylinder is driven to slide horizontally left and right by a linear power source fixed to the front outer side of the holding shell.

[0020] A blade installation method of a wind turbine in a floating offshore wind power system, which is installed by using the blade installation system of the wind turbine in the floating offshore wind power system, wherein the floating offshore wind power system is located at a working sea area, and the method comprises the following steps:

[0021] S1, the crane on the lifting installation ship lifts the nacelle holder to the outside of the nacelle, and the plurality of telescopic top block assemblies hold the nacelle;

[0022] S2, the holding cylinder is opened, the blade root is lifted into the holding cylinder by the crane, and then the holding cylinder is closed, and the plurality of telescopic drive wheel assemblies hold the blade root;

[0023] S3, the holding cylinder slides to the right relative to the holding shell until the axis of the blade root coincides with the axis of the mounting hole of the hub;

[0024] S4, the plurality of telescopic drive wheel assemblies horizontally drive the held blade root from front to back into the mounting hole of the hub, and the installation of the blade is completed.

[0025] Optionally, the method further comprises the following steps:

[0026] S5, the plurality of telescopic drive wheel assemblies release the blade root, the holding cylinder is opened, the holding cylinder slides to the left relative to the holding shell until the holding cylinder is on the left side of the hub, then the plurality of telescopic top block assemblies release the nacelle, the nacelle holder is lifted away from the nacelle by the crane, and the disassembly of the blade installation system is completed.

[0027] Optionally,

[0028] The step S1 is specifically: controlling the plurality of telescopic top clamping block assemblies to be in the retracted state, the crane hoists the clamping shell above the cabin, then gradually lowers it, so that the clamping shell surrounds the cabin, controls the plurality of telescopic top clamping block assemblies to synchronously extend the same length and cooperate to clamp the cabin;

[0029] The step S2 is specifically: controlling the plurality of telescopic drive wheel assemblies to be in the retracted state and open the clamping cylinder, the crane hoists the blade, makes the axis of the blade root and the axis of the clamping cylinder be at the same height, and translates the blade root to be hoisted into the clamping cylinder, then closes the clamping cylinder, controls the plurality of telescopic drive wheel assemblies to synchronously extend the same length and cooperate to clamp the blade root;

[0030] The step S4 is specifically: controlling the drive wheels of the plurality of telescopic drive wheel assemblies to synchronously rotate, and horizontally driving the clamped blade root from front to back into the mounting hole of the hub, to complete the installation of the blade.

[0031] Compared with the prior art, the beneficial effects of the present application are:

[0032] The blade mounting system of the wind turbine in the floating offshore wind power system of the application, the floating offshore wind power system is in the working sea area, when mounting the blade, the crane on the lifting installation ship hoists the nacelle holder to the outside of the nacelle, multiple telescopic top pressing block assemblies cooperate to hold the nacelle, the holding cylinder is opened, the crane hoists the blade root to the holding cylinder, then the holding cylinder is closed, multiple telescopic drive wheel assemblies cooperate to hold the blade root, the holding cylinder slides to the right relative to the holding shell to the axis of the blade root coincides with the mounting hole axis of the hub, multiple telescopic drive wheel assemblies cooperate to horizontally drive the held blade root from front to back into the mounting hole of the hub, and the installation of the blade is completed; in this way, through the cooperation of the nacelle holder, the blade holder and the lifting installation ship, when mounting the blade, the hoisted blade root does not need to be directly aligned with the mounting hole of the hub through the crane on the lifting installation ship to overcome the problem of large alignment difficulty of the hoisted blade root directly aligned with the mounting hole of the hub in the prior art, but the nacelle holder holds the nacelle to make the axis of the holding cylinder parallel to and at the same height as the mounting hole axis of the hub, and hoist the blade root into the holding cylinder in the opened state, then close the holding cylinder and hold the blade root, and slide the holding cylinder relative to the holding shell according to the set route, without considering the relative movement of the wind turbine and the lifting installation ship, the holding cylinder and the mounting hole of the hub can be conveniently and quickly aligned, and the axis of the blade root can coincide with the mounting hole axis of the hub, and when the holding cylinder is in the opened state, since the opening of the holding cylinder is large, the hoisted blade root can be conveniently and quickly hoisted from the opening of the holding cylinder into the holding cylinder, the movement range of the blade can be large, the requirement for the offshore installation working condition is small, the working condition is multiple, the construction weather window is larger, the installation difficulty is small, the blade mounting efficiency of the wind turbine in the floating offshore wind power system can be improved, thereby the comprehensive cost of the blade mounting of the wind turbine in the floating offshore wind power system can be correspondingly reduced, the offshore wind power can be further helped to reduce the construction and installation cost, in addition, the blade mounting system of the wind turbine in the floating offshore wind power system can also be used for blade installation during operation and maintenance of the wind turbine, and therefore the offshore wind power can be further helped to reduce the wind turbine operation and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 is a structural schematic view of the crane on the lifting installation ship hoisting the blade through the lifting cable in the application;

[0034] Fig. 2 is a main view structural schematic view of the floating offshore wind power system in the application;

[0035] Fig. 3 is a main view structural schematic view of the blade holder when the holding cylinder is in the closed state in the application;

[0036] Fig. 4 is a left view structural schematic view of the nacelle holder in the application;

[0037] Fig. 5 is a perspective view of the blade mounting system of the present application, wherein the blade gripper shows only the gripping cylinder, and the upper hinge shaft, the lower hinge shaft and the closing lock are not shown on the gripping cylinder;

[0038] Fig. 6 is a left view of the partial structure of the sliding connection between the gripping cylinder and the gripping housing in Fig. 5.

[0039] Reference signs in the drawings: 101, base, 102, tower cylinder, 103, nacelle, 104, hub, 1041, mounting hole, 105, blade, 2, nacelle gripper, 201, gripping housing, 2021, second hydraulic rod, 2022, rubber top block, 3, blade gripper, 301, gripping cylinder, 3011, first section, 3012, second section, 3013, third section, 3014, upper hinge shaft, 3015, lower hinge shaft, 3021, upper engaging piece, 3022, lower engaging piece, 3023, hydraulic telescopic closing rod, 3031, first hydraulic rod, 3032, drive wheel, 401, lifting installation ship, 402, crane, 403, hoisting cable, 501, upper sliding rail, 502, lower sliding rail, 503, upper pulley, 504, lower pulley, 6, hydraulic telescopic piece. DETAILED DESCRIPTION

[0040] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present application, and are not limiting to the present application.

[0041] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting to the present application. In addition, the terms "first", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Furthermore, in the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0044] A blade mounting system of a wind turbine in a floating offshore wind power system, as shown in Figure 2, the floating offshore wind power system comprises a foundation (101), a tower (102) and a wind turbine, the wind turbine comprises a nacelle (103), a hub (104) and a cylindrical root blade (105), the hub (104) is arranged at the right end of the nacelle (103), and the mounting hole (1041) of the hub (104) is arranged horizontally along the front and back directions; as shown in Figures 1 to 6, the blade mounting system comprises a nacelle gripper (2), a blade gripper (3) and a crane installation ship (401); the nacelle gripper (2) comprises a gripper shell (201) with openings at the left end, the right end and the lower end, and a plurality of telescopic jacking block assemblies are arranged on the inner surface of the gripper shell (201); the blade gripper (3) comprises a gripping cylinder (301) arranged horizontally along the front and back directions, the gripping cylinder (301) is arranged at the front outer side of the gripping shell (201) and can slide horizontally left and right relative to the gripping shell (201), and a plurality of telescopic drive wheel assemblies are arranged on the inner circumferential surface of the gripping cylinder (301); the crane (402) on the crane installation ship (401) is used to hoist the nacelle gripper (2) to or away from the nacelle (103) through the hoisting cable (403), the plurality of telescopic jacking block assemblies are matched to grip or release the nacelle (103), the crane (402) is also used to hoist the root of the blade (105) into the gripping cylinder (301) in the open state through the hoisting cable (403), the gripping cylinder (301) is closed and the plurality of telescopic drive wheel assemblies are matched to grip or release the root of the blade (105), the gripping cylinder (301) is slid to the right to be opposite to the mounting hole (1041) of the hub (104), and the plurality of telescopic drive wheel assemblies are matched to horizontally drive the gripped root of the blade (105) from front to back into the mounting hole (1041) of the hub (104).

[0045] The floating offshore wind power system in the application is in the working sea area, when installing the blade (105), the crane (402) on the lifting installation ship (401) lifts the nacelle holder (2) to the outside of the nacelle (103) through the lifting cable (403), a plurality of telescopic top block assemblies cooperate to hold the nacelle (103), the holding cylinder (301) is opened, the crane (402) lifts the root of the blade (105) to the holding cylinder (301) through the lifting cable (403), then the holding cylinder (301) is closed, a plurality of telescopic drive wheel assemblies cooperate to hold the root of the blade (105), the holding cylinder (301) slides to the right relative to the holding shell (201) to the axis of the root of the blade (105) coincides with the axis of the mounting hole (1041) of the hub (104), a plurality of telescopic drive wheel assemblies cooperate to horizontally drive the held root of the blade (105) from front to back into the mounting hole (1041) of the hub (104), and the installation of the blade (105) is completed.

[0046] In this way, by the cooperation of the nacelle gripper (2), the blade gripper (3) and the installation vessel (401), when installing the blade (105), the hoisted blade (105) root is not directly aligned with the installation hole (1041) of the hub (104) by the crane (402) on the installation vessel (401) through the hoisting cable (403), so as to overcome the problem of great difficulty in alignment in the prior art that the hoisted blade (105) root is directly aligned with the installation hole (1041) of the hub (104). Instead, the nacelle (103) is gripped by the nacelle gripper (2) so that the axis of the gripping cylinder (301) is parallel to and at the same height as the axis of the installation hole (1041) of the hub (104), and the hoisted blade (105) root is hoisted into the gripping cylinder (301) in the open state. Then, the gripping cylinder (301) is closed and the blade (105) root is gripped, and the gripping cylinder (301) slides to the right relative to the gripping shell (201) according to the set route, without considering the relative movement of the wind turbine and the installation vessel (401), so as to conveniently and quickly align the gripping cylinder (301) with the installation hole (1041) of the hub (104), and make the axis of the blade (105) root coincide with the axis of the installation hole (1041) of the hub (104). When the gripping cylinder (301) is in the open state, the opening of the gripping cylinder (301) is large, so the hoisted blade (105) root can be conveniently and quickly hoisted from the opening of the gripping cylinder (301) into the gripping cylinder (301), the movement range of the blade (105) can be large, the requirements for the installation conditions on the sea are less, the working conditions are more, the weather window for construction is larger, the installation difficulty is small, the blade (105) installation efficiency of the wind turbine in the floating offshore wind power system can be improved, so as to correspondingly reduce the comprehensive cost of the blade (105) installation of the wind turbine in the floating offshore wind power system, help the offshore wind power to further reduce the construction and installation cost, and the blade installation system of the wind turbine in the floating offshore wind power system can also be used for blade (105) installation during operation and maintenance of the wind turbine, so as to help the offshore wind power to further reduce the wind turbine operation and maintenance cost, and promote the large-scale commercial application of the floating offshore wind power system.

[0047] In one embodiment,

[0048] As shown in Fig. 3, the embracing cylinder (301) comprises a first section (3011), a second section (3012) and a third section (3013), the first section (3011) being a left half of the embracing cylinder (301), the second section (3012) and the third section (3013) being formed by splitting a right half of the embracing cylinder (301) into two, the first section (3011) being hinged to the second section (3012) by an upper hinge shaft (3014) arranged horizontally along the front-back direction between the right upper end of the first section (3011) and the left upper end of the second section (3012), the first section (3011) being hinged to the third section (3013) by a lower hinge shaft (3015) arranged horizontally along the front-back direction between the right lower end of the first section (3011) and the left lower end of the third section (3013), the right lower end of the second section (3012) and the right upper end of the third section (3013) being locked by a closure lock, and the embracing cylinder (301) being opened by opening the closure lock.

[0049] Optionally, the closure lock comprises an upper clamping member (3021) fixed to the right lower end of the second section (3012) and a lower clamping member (3022) fixed to the right upper end of the third section (3013), the upper clamping member (3021) and the lower clamping member (3022) being clamped to each other, and the upper clamping member (3021) and the lower clamping member (3022) being locked by a vertical hydraulic telescopic locking rod (3023) which is extended into and withdrawn from the upper through hole of the upper clamping member (3021) and the lower through hole of the lower clamping member (3022) at the same time, thereby locking the upper clamping member (3021) and the lower clamping member (3022) which are clamped to each other, and closing the embracing cylinder (301), or the hydraulic telescopic locking rod (3023) is retracted and withdrawn from the upper through hole and the lower through hole, the lower clamping member (3022) is separated from the upper clamping member (3021) by gravity, and the embracing cylinder (301) is opened.

[0050] When the gripping cylinder (301) needs to be closed, the third section (3013) is moved right up by manpower and rotates relative to the first section (3011) through the lower hinge shaft (3015), the second section (3012) is moved right down by gravity and rotates relative to the first section (3011) through the upper hinge shaft (3014), so that the upper jaw (3021) and the lower jaw (3022) are engaged with each other, then the hydraulic telescopic locking rod (3023) is extended and inserted into the upper through hole and the lower through hole at the same time, and the upper jaw (3021) and the lower jaw (3022) engaged with each other are locked, so as to close the gripping cylinder (301); when the gripping cylinder (301) needs to be opened, the hydraulic telescopic locking rod (3023) is controlled to retract and be pulled out of the upper through hole and the lower through hole, the lower jaw (3022) is separated from the upper jaw (3021) by gravity, the third section (3013) is moved left down by gravity and rotates relative to the first section (3011) through the lower hinge shaft (3015), and the second section (3012) is moved left up by manpower and rotates relative to the first section (3011) through the upper hinge shaft (3014), so as to open the gripping cylinder (301).

[0051] In an embodiment, as shown in FIG. 3, the structures and sizes of each telescopic drive wheel assembly are the same, each telescopic drive wheel assembly comprises a first hydraulic rod (3031) whose axis is perpendicular to the axis of the gripping cylinder (301), a drive wheel (3032) which can rotate relative to the first hydraulic rod (3031) is arranged at the free end of the first hydraulic rod (3031), the center line of the drive wheel (3032) is perpendicular to the axis of the corresponding first hydraulic rod (3031), wherein two drive wheels (3032) whose center lines coincide are arranged at the free end of each first hydraulic rod (3031), each drive wheel (3032) is driven to rotate by a rotary power source fixed to the corresponding first hydraulic rod (3031), and the rotary power source is an electric motor optionally.

[0052] In this way, the plurality of first hydraulic rods (3031) are synchronously extended by the same length and cooperate with the roots of the blades (105) through the drive wheels (3032), or the plurality of first hydraulic rods (3031) are synchronously retracted by the same length, so that the drive wheels (3032) are away from the roots of the blades (105) and loosen the roots of the blades (105), and when the gripping cylinder (301) slides right to be opposite to the mounting hole (1041) of the hub (104), the plurality of drive wheels (3032) are synchronously rotated relative to the corresponding first hydraulic rods (3031) and drive the roots of the blades (105) gripped horizontally from front to back into the mounting hole (1041) of the hub (104).

[0053] In an embodiment,

[0054] As shown in FIG. 4, each telescopic clamping block assembly has the same structure and size, and each telescopic clamping block assembly comprises a second hydraulic rod (2021), and a rubber clamping block (2022) is fixed at the free end of the second hydraulic rod (2021). Wherein the crane (402) is used for hoisting the clamping shell (201) from top to bottom outside the cabin (103) through the lifting cable (403), and the clamping shell (201) surrounds the cabin (103), a plurality of second hydraulic rods (2021) are synchronously extended by the same length and the cabin (103) is clamped by the rubber clamping blocks (2022), or a plurality of second hydraulic rods (2021) are synchronously retracted by the same length, so that the rubber clamping blocks (2022) are away from the cabin (103) and the cabin (103) is released.

[0055] Optionally, the clamping shell (201) is in the shape of a cuboid and the length direction is the horizontal direction from left to right, wherein a part of the telescopic clamping block assemblies are arranged at the front inner side of the clamping shell (201) and are called front telescopic clamping block assemblies, another part of the telescopic clamping block assemblies are arranged at the rear inner side of the clamping shell (201) and are called rear telescopic clamping block assemblies, and the remaining telescopic clamping block assemblies are arranged at the top inner surface of the clamping shell (201) and are called top telescopic clamping block assemblies, the second hydraulic rods (2021) of the front telescopic clamping block assemblies and the rear telescopic clamping block assemblies are arranged horizontally along the front-rear direction, and the second hydraulic rods (2021) of the top telescopic clamping block assemblies are vertical.

[0056] In one embodiment, as shown in FIGS. 5 and 6, the front outer side of the clamping shell (201) is provided with an upper slide rail (501) and a lower slide rail (502) arranged horizontally along the left-right direction, the upper slide rail (501) and the lower slide rail (502) are arranged symmetrically in the up-down direction, the rear end upper part of the clamping cylinder (301) is provided with two upper pulleys (503) and the rear end lower part is provided with two lower pulleys (504), the two upper pulleys (503) are slidingly arranged in the upper slide rail (501), and the two lower pulleys (504) are slidingly arranged in the lower slide rail (502); the clamping cylinder (301) is driven to slide horizontally left and right by a linear power source fixed on the front outer side of the clamping shell (201), and the linear power source is a hydraulic telescopic piece (6) optionally.

[0057] A blade mounting method of a wind turbine in a floating offshore wind power system, which is mounted by using the blade mounting system of the wind turbine in the floating offshore wind power system, wherein the floating offshore wind power system is located at a working sea area, and the method comprises the following steps:

[0058] S1, control the plurality of telescopic top tight block assemblies to be in a contracted state, the crane (402) gradually lowers the nipping shell (201) after lifting the nipping shell (201) above the cabin (103) through the lifting cable (403), so that the nipping shell (201) surrounds the cabin (103), and controls the plurality of telescopic top tight block assemblies to synchronously extend the same length and cooperate with the nipping cabin (103);

[0059] S2, control the plurality of telescopic drive wheel assemblies to be in a contracted state and open the nipping cylinder (301), the crane (402) lifts the blade (105) through the lifting cable (403) and makes the axis of the root of the blade (105) at the same height as the axis of the nipping cylinder (301), and translates the root of the blade (105) to be lifted into the nipping cylinder (301), then closes the nipping cylinder (301), and controls the plurality of telescopic drive wheel assemblies to synchronously extend the same length and cooperate with the nipping root of the blade (105);

[0060] S3, control the nipping cylinder (301) to slide to the right relative to the nipping shell (201) until the axis of the root of the blade (105) coincides with the axis of the mounting hole (1041) of the hub (104);

[0061] S4, control the drive wheels (3032) of the plurality of telescopic drive wheel assemblies to synchronously rotate, and horizontally drive the nipped root of the blade (105) from front to back into the mounting hole (1041) of the hub (104), to complete the installation of the blade (105);

[0062] S5, control the plurality of telescopic drive wheel assemblies to synchronously contract the same length and cooperate with the loosening of the root of the blade (105), then open the nipping cylinder (301), control the nipping cylinder (301) to slide to the left relative to the nipping shell (201) until the nipping cylinder (301) is on the left side of the hub (104), then control the plurality of telescopic top tight block assemblies to synchronously contract the same length and cooperate with the loosening of the cabin (103), the crane (402) lifts the cabin nipping device (2) from below to above away from the cabin (103) through the lifting cable (403), to complete the disassembly of the blade installation system.

[0063] The blade installation system in the present application can also be used for the installation of the blade (105) of the wind turbine in the fixed offshore wind power system, and has a wide application range.

[0064] The above is only an optional embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be regarded as the protection range of the present application.

Claims

1. A blade mounting system for a wind turbine in a floating offshore wind power system, the floating offshore wind power system comprising a foundation (101), a tower (102) and a wind turbine, the wind turbine comprising a nacelle (103), a hub (104) and blades (105) with cylindrical roots, the hub (104) being arranged at the right end of the nacelle (103), and the mounting holes (1041) of the hub (104) being arranged horizontally in a front-to-rear direction; characterized in that: The blade installation system comprises a cabin clamp (2), a blade clamp (3) and a lifting and installation vessel (401); the cabin clamp (2) comprises a clamping shell (201) with openings at the left end, the right end and the lower end, and a plurality of telescopic top clamping block assemblies are provided on the inner surface of the clamping shell (201); the blade clamp (3) comprises a clamping cylinder (301) arranged horizontally in the front-back direction, the clamping cylinder (301) is arranged at the front outer side surface of the clamping shell (201) and can slide horizontally left and right relative to the clamping shell (201), and a plurality of telescopic drive wheel assemblies are provided on the inner circumference of the clamping cylinder (301); the crane (402) on the lifting and installation vessel (401) The invention is used to lift the cabin clamp (2) to or from the cabin (103), and the plurality of telescopic top clamping block assemblies cooperate to clamp or release the cabin (103). The crane (402) is also used to lift the root of the blade (105) into the clamping cylinder (301) in an open state. The clamping cylinder (301) is closed and the plurality of telescopic drive wheel assemblies cooperate to clamp or release the root of the blade (105). The clamping cylinder (301) slides to the right until it is aligned with the mounting hole (1041) of the hub (104). The plurality of telescopic drive wheel assemblies cooperate to drive the clamped root of the blade (105) horizontally from front to back into the mounting hole (1041) of the hub (104).

2. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 1, characterized in that: The clamping cylinder (301) includes a first segment (3011), a second segment (3012) and a third segment (3013), wherein the first segment (3011) is the left half of the clamping cylinder (301), and the second segment (3012) and the third segment (3013) are formed by dividing the right half of the clamping cylinder (301) into two. The upper right end of the first segment (3011) and the upper left end of the second segment (3012) are hinged by an upper hinge shaft (3014) arranged horizontally along the front-to-back direction, and the lower right end of the first segment (3011) and the lower left end of the third segment (3013) are hinged by a lower hinge shaft (3015) arranged horizontally along the front-to-back direction. The lower right end of the second segment (3012) and the upper right end of the third segment (3013) are locked by a closing lock, and the clamping cylinder (301) is opened by opening the closing lock.

3. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 2, characterized in that: The closing lock comprises an upper bite piece (3021) fixed at the lower right end of the second segment (3012) and a lower bite piece (3022) fixed at the upper right end of the third stage, wherein the upper bite piece (3021) and the lower bite piece (3022) are engaged with each other, and the upper bite piece (3021) and the lower bite piece (3022) are locked by a hydraulic telescopic locking rod (3023), wherein the hydraulic telescopic locking rod (3023) extends and simultaneously extends into the upper through hole of the upper bite piece (3021) and the lower bite piece (3022). The upper bite part (3021) and the lower bite part (3022) that are engaged with each other are locked in the lower through hole, and the clamping cylinder (301) is closed, or the hydraulic telescopic locking rod (3023) is contracted and pulled out from the upper through hole and the lower through hole, and the lower bite part (3022) is separated from the upper bite part (3021) by gravity, and the clamping cylinder (301) is opened.

4. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 1, characterized in that: The structure and size of each telescopic drive wheel assembly are the same. Each telescopic drive wheel assembly includes a first hydraulic rod (3031) whose axis intersects perpendicularly with the axis of the clamping cylinder (301). A drive wheel (3032) that can rotate relative to the first hydraulic rod (3031) is provided at the free end of the first hydraulic rod (3031). The center line of the drive wheel (3032) is perpendicular to the axis of the corresponding first hydraulic rod (3031). The drive wheel (3032) is driven to rotate by a rotating power source fixed to the corresponding first hydraulic rod (3031). ; Multiple first hydraulic rods (3031) are synchronously extended to the same length and cooperate with each driving wheel (3032) to hold the root of the blade (105), or multiple first hydraulic rods (3031) are synchronously retracted to the same length, so that each driving wheel (3032) is away from the root of the blade (105) and loosens the root of the blade (105), and multiple driving wheels (3032) are synchronously rotated relative to the corresponding first hydraulic rod (3031) and drive the held root of the blade (105) horizontally from front to back into the mounting hole (1041) of the hub (104).

5. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 1, characterized in that: The structures and dimensions of the telescopic tightening block assemblies are the same. Each telescopic tightening block assembly comprises a second hydraulic rod (2021), and a rubber tightening block (2022) is fixed at the free end of the second hydraulic rod (2021); the crane (402) is used to lift the clamping shell (201) from top to bottom to the outside of the cabin (103), and make the clamping shell (201) surround the cabin (103); multiple second hydraulic rods (2021) are synchronously extended to the same length and clamp the cabin (103) through each rubber tightening block (2022), or multiple second hydraulic rods (2021) are synchronously retracted to the same length, so that each rubber tightening block (2022) is away from the cabin (103) and releases the cabin (103).

6. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 5, characterized in that: The clamping shell (201) is in the shape of a rectangular parallelepiped and its length direction is horizontal left and right, wherein a part of the telescopic top block assembly is arranged at the front inner side surface of the clamping shell (201) and is called the front telescopic top block assembly, another part of the telescopic top block assembly is arranged at the rear inner side surface of the clamping shell (201) and is called the rear telescopic top block assembly, and the remaining telescopic top block assemblies are arranged at the top inner surface of the clamping shell (201) and are called the top telescopic top block assembly, the second hydraulic rods (2021) of the front telescopic top block assembly and the rear telescopic top block assembly are both arranged horizontally along the front-to-back direction, and the second hydraulic rod (2021) of the top telescopic top block assembly is vertical.

7. The blade mounting system for a wind turbine in a floating offshore wind power system according to claim 1, characterized in that: An upper slide rail (501) and a lower slide rail (502) are arranged horizontally in the left and right directions on the front outer side surface of the clamping shell (201); the upper slide rail (501) and the lower slide rail (502) are arranged symmetrically up and down; two upper pulleys (503) are provided at the upper portion of the rear end of the clamping cylinder (301) and two lower pulleys (504) are provided at the lower portion of the rear end; the two upper pulleys (503) are slidably arranged in the upper slide rail (501), and the two lower pulleys (504) are slidably arranged in the lower slide rail (502); the clamping cylinder (301) is driven to slide horizontally left and right by a linear power source fixed on the front outer side surface of the clamping shell (201).

8. A method for installing blades of a wind turbine in a floating offshore wind power system, comprising: using the blade installation system for a wind turbine in a floating offshore wind power system according to any one of claims 1 to 7; wherein the floating offshore wind power system is located in an operating sea area; and wherein: The following steps are involved: S1. The crane (402) on the lifting and installation vessel (401) lifts the engine room clamp (2) to the outside of the engine room (103), and the plurality of telescopic clamping block assemblies cooperate to clamp the engine room (103); S2, opening the clamping cylinder (301), the crane (402) hoists the root of the blade (105) into the clamping cylinder (301), and then closing the clamping cylinder (301), and the plurality of telescopic drive wheel assemblies cooperate to clamp the root of the blade (105); S3, the clamping cylinder (301) slides rightward relative to the clamping housing (201) until the axis of the root of the blade (105) coincides with the axis of the mounting hole (1041) of the hub (104); S4. The plurality of telescopic drive wheel assemblies cooperate to horizontally drive the root of the tightly embraced blade (105) from front to back into the mounting hole (1041) of the hub (104), thereby completing the installation of the blade (105).

9. The method for installing blades of a wind turbine in a floating offshore wind power system according to claim 8, characterized in that: The following steps are also included: S5. The plurality of telescopic drive wheel assemblies cooperate to loosen the root of the blade (105), and then the clamping cylinder (301) is opened. The clamping cylinder (301) slides leftward relative to the clamping shell (201) until the clamping cylinder (301) is on the left side of the hub (104). Thereafter, the plurality of telescopic top clamping block assemblies cooperate to loosen the cabin (103), and the crane (402) lifts the cabin clamp (2) away from the cabin (103), thereby completing the removal of the blade installation system.

10. The method for installing blades of a wind turbine in a floating offshore wind power system according to claim 8, characterized in that: Step S1 specifically comprises: controlling the plurality of telescopic tightening block assemblies to be in a retracted state, the crane (402) lifting the tightening shell (201) to the top of the cabin (103) and then gradually lowering it so that the tightening shell (201) surrounds the cabin (103); Controlling the plurality of telescopic tightening block assemblies to synchronously extend to the same length and cooperate to hold the cabin tightly (103); Step S2 specifically comprises: controlling the plurality of telescopic drive wheel assemblies to be in a retracted state and opening the clamping cylinder (301); the crane (402) hoists the blade (105) so that the axis of the root of the blade (105) is at the same height as the axis of the clamping cylinder (301); and hoisting the root of the blade (105) into the clamping cylinder (301) by translation; then closing the clamping cylinder (301); and controlling the plurality of telescopic drive wheel assemblies to synchronously extend to the same length and cooperate to clamp the root of the blade (105); Step S4 specifically comprises: controlling the driving wheels (3032) of the plurality of telescopic driving wheel assemblies to rotate synchronously, and driving the roots of the tightly held blades (105) horizontally from front to back into the mounting holes (1041) of the hub (104), thereby completing the installation of the blades (105).

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