A multi-buoy anti-tilting offshore wind turbine jacket structure

Abstract

This invention relates to the field of offshore wind turbine jacket technology, and more particularly to a multi-buoy anti-tilting offshore wind turbine jacket structure, comprising a suction cylinder, stiffened chords fixedly connected to the top of the suction cylinder, and stiffened struts fixedly connected between two adjacent sets of stiffened chords. The outer sides of the multiple sets of stiffened chords are provided with a float anti-tilting mechanism for multi-directional adaptive wave impact resistance of the jacket. The suction cylinder is internally equipped with a reinforcing mechanism to strengthen the stable installation of the suction cylinder. This invention, through the float anti-tilting mechanism, enables anti-tilting descent during jacket installation, ensuring precise vertical installation of the jacket on uneven seabeds. It also adaptively reduces the height of waves from all directions, significantly reducing the impact force of waves on the jacket. Combined with the reinforcing mechanism, it facilitates convenient and stable installation between the suction cylinder and the seabed, preventing jacket tilting and improving the safety and stability of the jacket in complex sea conditions.

Description

Technical Field

[0001] This invention relates to the field of offshore wind turbine jacket technology, and in particular to a multi-buoy anti-tilting offshore wind turbine jacket structure. Background Technology

[0002] Offshore wind energy resources offer significant advantages. Compared to onshore wind energy, offshore wind resources are more abundant and widely distributed, with more stable wind speeds and higher wind energy density, resulting in significantly improved power generation stability and utilization. Simultaneously, the vast sea area provides ample development space, giving offshore wind power enormous power generation potential. Furthermore, offshore wind farms are far from residential areas, generating minimal noise pollution during operation and having a negligible impact on the surrounding ecological environment, thus avoiding social problems such as land use conflicts that could arise from excessive energy development. In offshore wind power systems, the foundation structure is the cornerstone of the entire wind turbine, and its stability directly determines whether the offshore wind turbine can operate safely and stably.

[0003] However, existing offshore wind turbine jackets still have the following problems in practical applications: During installation, the actual seabed topography is complex and varied, with significant undulations. Existing jackets lack effective adaptive adjustment mechanisms during installation, making it difficult to ensure vertical installation. Once installation deviations occur, the jacket structure will experience uneven stress, with some areas bearing excessive stress, thus accelerating structural fatigue damage, seriously affecting its stability and service life, and increasing later maintenance costs and safety risks. In addition, the existing jacket structure is relatively simple and lacks multi-directional adaptive shock resistance adjustment capabilities, making it difficult to effectively cope with frequent and unpredictable wave impacts in the complex and varied marine environment. Under the continuous action of waves, the jacket is prone to tilting, reducing its service life.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-buoy anti-tilting offshore wind turbine jacket structure that can be precisely vertically installed to adapt to complex seabed topography and has multi-directional adaptive wave impact resistance, thereby improving the stability and power generation efficiency of offshore wind power equipment and solving the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: a multi-buoy anti-tilting offshore wind turbine jacket structure, comprising multiple sets of bottom-opening suction cylinders, stiffening chords fixedly connected to the top of the suction cylinders, and stiffening struts fixedly connected between two adjacent sets of stiffening chords. The outer sides of the multiple sets of stiffening chords are provided with a float anti-tilting mechanism for multi-directional adaptive wave impact resistance of the jacket structure. The suction cylinders are provided with a reinforcing mechanism to strengthen the stable installation of the suction cylinders.

[0007] The anti-tilting mechanism of the float includes a mounting ring and multiple buoyancy cylinders that are fixedly connected at equal intervals to the outer wall of the mounting ring. The outer wall of the buoyancy cylinder is fixedly connected to an Ω-shaped rib plate that is fixedly connected to the mounting ring. The reinforcing mechanism includes movable plates arranged on both sides inside the suction cylinder, and multiple auxiliary rods that slide and seal with the suction cylinder are fixedly connected to one side of the movable plate.

[0008] Preferably, a sliding rod is welded onto the stiffened chord, and a sliding sleeve is fixedly connected to the sliding rod. A sleeve rod and a connecting rod are fixedly connected to both sides of the sliding sleeve, respectively. The sleeve rods between adjacent stiffened chords are slidably connected to the corresponding connecting rods. Multiple fixing holes are equidistantly opened on the connecting rods, and connecting pins that are inserted into the corresponding fixing holes are installed on the sleeve rods.

[0009] Preferably, a sleeve is provided between the mounting ring and the corresponding sliding sleeve, and a limit block that slides with the sleeve is fixedly connected inside the sleeve by a tension spring. A pull rod that moves through the sleeve to the outside of the sleeve is fixedly connected to one side of the limit block.

[0010] Preferably, the free ends of the pull rod and the sleeve are both fixedly connected to ball heads, and the mounting ring and the sliding sleeve are both fixedly connected to ball sockets that are movably mounted to the corresponding ball heads.

[0011] Preferably, the Ω-shaped rib has a funnel-shaped cross-section, and the top area of ​​the Ω-shaped rib is larger than its bottom area. The bottom of the Ω-shaped rib is provided with multiple drainage holes at equal intervals around the periphery of the buoyancy cylinder. The buoyancy cylinder is fixedly connected with reinforcing ribs distributed in a cross pattern.

[0012] Preferably, a movable frame is slidably connected between the movable plates. Multiple oblique grooves are equally spaced on the inner walls of both sides of the movable plates. A guide post that slides with the corresponding oblique groove is fixedly connected to the movable frame. A reinforcing frame that slides with the inner wall of the suction cylinder is fixedly connected to the movable frame. A sealing post that matches the suction hole on the suction cylinder is fixedly connected to the top of the reinforcing frame.

[0013] Preferably, the tops of the multiple sets of reinforced chords are all fixedly connected to the same transition section, and the top of the transition section is fixedly connected to an upper platform with a fence installed around its top perimeter.

[0014] Preferably, both the stiffened chord and the stiffened strut are composed of a steel cylinder and a grid-level reinforcement. The grid-level reinforcement includes several annular main bars that are fixedly connected at equal intervals to the inner wall of the steel cylinder, and multiple annular secondary bars are provided between two adjacent sets of annular main bars. Several longitudinal main bars that are distributed in an annular array are fixedly connected to the inner wall of the steel cylinder, as well as multiple longitudinal secondary bars located between adjacent longitudinal main bars.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) By setting an installation ring and multiple buoyancy cylinders on the outside of multiple stiffened chords, the present invention can not only realize the anti-tilting descent movement of the jacket during installation, ensuring the precise vertical installation of the jacket on the uneven seabed; but also, during use, when facing the impact of surging waves, the waves push the buoyancy cylinders on the impact side to rise, causing the installation ring to tilt. The buoyancy of the buoyancy cylinders on the back of the impact side pressed down below the sea surface can offset the tilting force on the installation ring, assisting the installation ring to return to horizontal position, thereby reducing the height of the waves, significantly reducing the impact force of the waves on the jacket, avoiding the tilting of the offshore wind power jacket, and greatly improving the safety and stability of the jacket under complex sea conditions.

[0017] In addition, by cooperating with the sleeve rod and connecting rod between two adjacent sets of sliding sleeves, the auxiliary stiffening struts are used to improve the connection stability between multiple sets of stiffened chords. At the same time, combined with the grid-level stiffening structure on the inner wall of the stiffened chords and stiffening struts, the problem of easy local buckling of hollow thin-walled structures is avoided from the inside, thereby achieving a comprehensive internal and external auxiliary improvement of the overall anti-tilting and anti-buckling effect of the jacket.

[0018] (2) The present invention utilizes negative pressure extraction to install the suction cylinder. First, the suction cylinder is filled with seabed material to assist the movable frame to rise, thereby completing the installation of the suction cylinder and sealing of its suction holes. Then, the negative pressure extraction drives the movable frame to rise. Combined with the inclined groove and guide pin, the two sets of movable plates move in opposite directions, causing the end of the auxiliary insertion rod to extend from the suction cylinder and insert into the seabed, thereby assisting in strengthening the installation of the suction cylinder, further enhancing the connection strength between the suction cylinder and the seabed, and improving the installation stability of the guide frame. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings;

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the cooperation between the stiffened chord and the anti-tilting mechanism of the float in this invention;

[0022] Figure 3 This is a schematic diagram of the installation of the buoyancy cylinder of the present invention;

[0023] Figure 4 This is a schematic diagram of the buoyancy cylinder of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection between the sliding sleeve and the tube sleeve of the present invention;

[0025] Figure 6 This is a schematic diagram of the suction cylinder of the present invention;

[0026] Figure 7This is a schematic diagram of the cooperation between the reinforcing mechanism and the suction cylinder of the present invention;

[0027] Figure 8 This is a schematic diagram showing the disassembled strengthening mechanism of the present invention;

[0028] Figure 9 This is a schematic diagram of the reinforced chord of the present invention.

[0029] Legend:

[0030] 1. Suction cylinder; 11. Reinforced chord; 12. Reinforced strut; 13. Slide rod; 14. Transition section; 15. Upper platform; 16. Steel cylinder; 17. Circular main reinforcement; 18. Circular secondary reinforcement; 19. Longitudinal main reinforcement; 110. Longitudinal secondary reinforcement;

[0031] 2. Anti-tilting mechanism for pontoons; 21. Mounting ring; 22. Buoyancy cylinder; 23. Ω-shaped rib; 24. Sliding sleeve; 25. Sleeve rod; 26. Connecting rod; 27. Tube sleeve; 28. Tension spring; 29. ​​Limiting block; 210. Tie rod;

[0032] 3. Reinforcing mechanism; 31. Movable plate; 32. Auxiliary insert rod; 33. Movable frame; 34. Angled groove; 35. Guide column; 36. Reinforcing frame; 37. Sealing column. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-6 and Figure 9 As shown, the existing technologies struggle with precise vertical installation on complex seabed terrain and lack multi-directional adaptive wave impact resistance. The following solutions can address these issues:

[0035] This embodiment of a multi-buoy anti-tilting offshore wind turbine jacket structure includes multiple sets of bottom-opening suction cylinders 1. The top side of the suction cylinder 1 is provided with a suction hole for negative pressure extraction installation. A stiffening chord 11 is fixedly connected to the top of the suction cylinder 1, and a stiffening support 12 is fixedly connected between two adjacent sets of stiffening chords 11. The outer side of the multiple sets of stiffening chords 11 is provided with a float anti-tilting mechanism 2 for multi-directional adaptive anti-wave impact of the jacket. The inside of the suction cylinder 1 is provided with a reinforcing mechanism 3 to strengthen the stable installation of the suction cylinder 1.

[0036] The buoy anti-tilting mechanism 2 includes a mounting ring 21 and multiple buoyancy cylinders 22 that are equidistantly fixed to the outer wall of the mounting ring 21. The mounting ring 21 and the multiple buoyancy cylinders 22 on the mounting ring 21 are used to achieve anti-tilting descent of the jacket structure. When facing the impact of surging waves, the waves push the buoyancy cylinders 22 on the impact side to rise, causing the mounting ring 21 to tilt. The buoyancy of the buoyancy cylinders 22 on the impact side is used to counteract the tilting force on the mounting ring 21, thereby reducing the wave height and the impact force on the jacket structure. The outer wall of the buoyancy cylinders 22 is fixedly connected to the mounting ring 21. The Ω-shaped ribs 23 are used to help increase the connection stability between the buoyancy cylinders 22 and the mounting ring 21.

[0037] A sliding rod 13 is welded onto the stiffened chord 11 for the installation of the float anti-tilting mechanism 2. A sliding sleeve 24 is fixedly connected to the sliding rod 13, and a sleeve rod 25 and a connecting rod 26 are fixedly connected to both sides of the sliding sleeve 24 respectively. Through the cooperation of the sleeve rod 25 and the connecting rod 26 between two adjacent sets of sliding sleeves 24, the stiffened support rod 12 is assisted, and the connection stability between the external parts of multiple sets of stiffened chords 11 is improved.

[0038] The sleeve 25 between adjacent stiffened chord members 11 is slidably connected to the corresponding connecting rod 26. Multiple fixing holes are equidistantly opened on the connecting rod 26. Connecting pins that are inserted into the corresponding fixing holes are installed on the sleeve 25. After the guide frame is installed, the connecting pins on the sleeve 25 are inserted into the fixing holes on the corresponding connecting rod 26 to fix the installation height of the mounting ring 21. Multiple connecting pins can be set to increase the connection stability between the sleeve 25 and the connecting rod 26.

[0039] A sleeve 27 is provided between the mounting ring 21 and the corresponding sliding sleeve 24, and a sliding limit block 29 is fixedly connected to the inside of the sleeve 27 by a tension spring 28. The limit block 29 slides in a sealed manner with the sleeve 27 to avoid corrosion caused by seawater contacting the tension spring 28. A pull rod 210 is fixedly connected to one side of the limit block 29 and extends to the outside of the sleeve 27.

[0040] During the lowering and installation of the jacket, the buoyancy cylinder 22 contacts the sea surface and generates buoyancy. The installation ring 21, together with the sleeve rod 25 and the connecting rod 26, carries multiple sliding sleeves 24 to move upward synchronously relative to the stiffened chord 11. At the same time, the tension springs 28 inside each sleeve 27 are stretched. Through the combined action of the tension force of the tension springs 28 and the buoyancy, the jacket is assisted in anti-tilting descent. This allows the jacket to gradually adjust its attitude under the action of buoyancy and tension springs 28 when the seabed is uneven, thus achieving vertical installation.

[0041] Both the free ends of the pull rod 210 and the sleeve 27 are fixedly connected to ball heads. Both the mounting ring 21 and the sliding sleeve 24 are fixedly connected to ball sockets that are movably installed with the corresponding ball heads. If the waves surge from a certain direction, the buoyancy cylinder 22 in that direction will rise. Through the connection between the ball head and the ball socket, the mounting ring 21 will tilt, and at the same time, the buoyancy cylinder 22 on the impact side will be pressed down below the sea surface.

[0042] As the volume of water displaced by the pressure buoyancy cylinder 22 increases, the buoyancy increases significantly. The buoyancy acts upward on the installation ring 21, counteracting the tilting force caused by the impact of the waves, assisting the installation ring 21 to return to its horizontal position, thereby reducing the height of the waves and significantly reducing the impact force of the waves on the jacket structure. This prevents the offshore wind power jacket structure from tilting and greatly improves the safety and stability of the jacket structure under complex sea conditions.

[0043] The cross-section of the Ω-shaped rib 23 is funnel-shaped, and the top area of ​​the Ω-shaped rib 23 is larger than its bottom area. The funnel-shaped Ω-shaped rib 23 can significantly reduce its own weight and help improve the effect of the waves pushing the corresponding buoyancy cylinder 22 to rise when it is impacted by surging waves.

[0044] The bottom of the Ω-shaped rib 23 is provided with multiple drainage holes at equal intervals around the periphery of the buoyancy cylinder 22 to drain excess seawater that enters between the Ω-shaped rib 23 and the buoyancy cylinder 22. The buoyancy cylinder 22 is fixedly connected with reinforcing ribs distributed in a cross pattern to increase the compressive strength of the buoyancy cylinder 22 itself, and to prevent the buoyancy cylinder 22 from deforming or being damaged due to excessive buoyancy when the mounting ring 21 is tilted downward, thereby improving the service life of the device.

[0045] The tops of multiple sets of reinforced chords 11 are all fixedly connected to the same transition section 14, and the top of the transition section 14 is fixedly connected to an upper platform 15 with a fence installed around its top perimeter.

[0046] Both the stiffened chord 11 and the stiffened strut 12 are composed of a steel cylinder 16 and a grid-level stiffening structure. The grid-level stiffening structure can evenly distribute the stress on the stiffened chord 11 and the stiffened strut 12, avoid local stress concentration, and prevent the problem of local buckling of thin-walled structures from the inside. This improves the buckling resistance of the stiffened chord 11 and the stiffened strut 12, thereby achieving the effects of increasing the load-bearing capacity of the jacket framework chord struts, standardizing the design, and reducing the weight.

[0047] The grid-level reinforcement includes several annular main bars 17 that are fixedly connected at equal intervals to the inner wall of the steel cylinder 16, and multiple annular secondary bars 18 are arranged between two adjacent sets of annular main bars 17. Several longitudinal main bars 19 arranged in an annular array are fixedly connected to the inner wall of the steel cylinder 16, and multiple longitudinal secondary bars 110 are located between adjacent longitudinal main bars 19. Longitudinal secondary bars 110 and annular secondary bars 18 are arranged in the grid of longitudinal main bars 19 and annular main bars 17 to form a smaller grid, which further improves the buckling resistance.

[0048] Example 2: Please refer to Figure 7 and Figure 8 As shown, the multi-pontoon structure can affect the stability of the suction cylinder installation. This can be resolved through the following solutions:

[0049] In this embodiment, the reinforcing mechanism 3 includes movable plates 31 disposed on both sides inside the suction cylinder 1. A plurality of auxiliary rods 32 are fixedly connected to one side of the movable plates 31 and slide in a sealed manner with the suction cylinder 1. After the suction cylinder 1 stops sinking, the two sets of movable plates 31 carry the auxiliary rods 32 and move away from each other, causing the ends of the auxiliary rods 32 to extend out of the suction cylinder 1 and insert into the seabed, thereby assisting in reinforcing the installation of the suction cylinder 1, further enhancing the connection strength between the suction cylinder 1 and the seabed, and improving the installation stability of the guide frame.

[0050] A movable frame 33 is slidably connected between the movable plates 31. Multiple inclined slots 34 are equally spaced on the inner walls of both sides of the movable plates 31. A guide column 35 that slides with the corresponding inclined slot 34 is fixedly connected to the movable frame 33. The movable frame 33 moves upward relative to the suction cylinder 1. With the help of the guide column 35 sliding in the corresponding inclined slot 34, the two sets of movable plates 31 are pushed to move away from each other. A reinforcing frame 36 that slides with the inner wall of the suction cylinder 1 is fixedly connected to the movable frame 33. It is used to cooperate with the movable frame 33, guide column 35, inclined slot 34 and movable plate 31 to increase the resistance to buckling of the cylinder wall sidewall of the suction cylinder 1.

[0051] Furthermore, a sealing column 37 that is compatible with the suction hole on the suction cylinder 1 is fixedly connected to the top of the reinforcing frame 36. The suction cylinder 1 is lowered to a certain depth on the seabed by its own weight. Then, the negative pressure is extracted to continue the lowering process until the material inside the suction cylinder 1 touches the top of the movable frame 33, causing it to rise relative to the suction cylinder 1. This helps the sealing column 37 to insert into the suction hole of the suction cylinder 1, causing the suction cylinder 1 to stop sinking. The negative pressure extraction process continues, causing the sealing column 37 to carry the movable frame 33 to continue rising.

[0052] By injecting water into the suction hole of the suction cylinder 1, the sealing column 37 is pushed to move downward. Combined with the guide column 35 and the corresponding inclined groove 34, the two sets of movable plates 31 move relative to each other, so that the end of the auxiliary rod 32 is retracted into the side wall of the suction cylinder 1. Then, water is continuously injected to cooperate with the crane to retrieve the suction cylinder 1.

[0053] Example 3: Please refer to Figures 1-9 As shown, the present invention also proposes a method for using a multi-buoy anti-tilting offshore wind turbine jacket structure, comprising the following steps:

[0054] Step 1: The wind turbine jacket is lowered to the shallow sea installation area by a crane. The suction cylinder 1 is lowered to a certain depth on the seabed by its own weight. Then, the negative pressure is extracted to continue the lowering process until the material inside the suction cylinder 1 comes into contact with the top of the movable frame 33, causing it to rise relative to the suction cylinder 1. The auxiliary sealing column 37 is inserted into the suction hole of the suction cylinder 1, causing the suction cylinder 1 to stop sinking.

[0055] Afterwards, negative pressure extraction is continuously performed, causing the sealing column 37 to carry the movable frame 33 to rise continuously. During the rising process, with the help of the guide column 35 sliding in the corresponding inclined groove 34, the two sets of movable plates 31 carrying the auxiliary rod 32 move away from each other, causing the end of the auxiliary rod 32 to extend out of the suction cylinder 1 and insert into the seabed, thus assisting in strengthening the installation of the suction cylinder 1.

[0056] Step 2: When the jacket is lowered, multiple buoyancy cylinders 22 on the installation ring 21 contact the sea surface. During the lowering process, the buoyancy of the buoyancy cylinders 22 on the sea surface causes the installation ring 21, together with the sleeve rod 25 and the connecting rod 26, to carry multiple sliding sleeves 24 to move upward relative to the stiffened chord rod 11 in sync. Combined with the tension of the tension springs 28 inside each sleeve 27, the jacket is lowered in an anti-tilting manner to achieve vertical installation of the jacket on the uneven seabed.

[0057] Step 3: After the jacket is installed, insert the connecting pin on the sleeve 25 into the fixing hole on the corresponding connecting rod 26 to fix the installation height of the installation ring 21. When the surging waves hit the jacket, the waves simultaneously push the buoyancy cylinder 22 in the corresponding direction to rise. Combined with the setting of the ball head and ball socket, the installation ring 21 tilts, pressing the buoyancy cylinder 22 on the back side of the jacket under impact to below the sea surface. The buoyancy of the buoyancy cylinder 22 on the back side of impact counteracts the tilting force on the installation ring 21, assisting the installation ring 21 to return to horizontal position, thereby reducing the height of the waves and reducing the impact force on the jacket.

[0058] Step 4: When retrieving the suction cylinder 1, water is injected into the suction hole of the suction cylinder 1 to push the sealing column 37 to move downward. Combined with the guide column 35 and the corresponding inclined groove 34, the two sets of movable plates 31 move relative to each other, so that the end of the auxiliary rod 32 is retracted into the side wall of the suction cylinder 1. Then, water is continuously injected to cooperate with the crane to retrieve the suction cylinder 1.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-buoy anti-tilting offshore wind turbine jacket structure, comprising multiple sets of bottom-opening suction cylinders (1), stiffening chords (11) fixedly connected to the top of the suction cylinders (1), and stiffening struts (12) fixedly connected between two adjacent sets of stiffening chords (11), characterized in that, The outer side of the multiple sets of stiffened chords (11) is provided with a float anti-tilting mechanism (2) for multi-directional adaptive anti-wave impact of the jacket, and the inside of the suction cylinder (1) is provided with a reinforcing mechanism (3) to strengthen the stable installation of the suction cylinder (1). The anti-tilting mechanism (2) of the float includes a mounting ring (21) and a plurality of buoyancy cylinders (22) fixedly connected at equal intervals to the outer wall of the mounting ring (21). The outer wall of the buoyancy cylinder (22) is fixedly connected to an Ω-shaped rib plate (23) that is fixedly connected to the mounting ring (21). The reinforcing mechanism (3) includes a movable plate (31) disposed on both sides inside the suction cylinder (1), and a plurality of auxiliary insert rods (32) that are sealed and slide with the suction cylinder (1) are fixedly connected to one side of the movable plate (31). A movable frame (33) is slidably connected between the movable plates (31). Multiple inclined grooves (34) are equally spaced on the inner walls of both sides of the movable plates (31). A guide post (35) that slides with the corresponding inclined groove (34) is fixedly connected to the movable frame (33). A reinforcing frame (36) that slides with the inner wall of the suction cylinder (1) is fixedly connected to the movable frame (33). A sealing post (37) that matches the suction hole on the suction cylinder (1) is fixedly connected to the top of the reinforcing frame (36).

2. The multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 1, characterized in that, A sliding rod (13) is welded onto the stiffened chord (11), and a sliding sleeve (24) is fixedly connected to the sliding rod (13). A sleeve rod (25) and a connecting rod (26) are fixedly connected to both sides of the sliding sleeve (24). The sleeve rod (25) between adjacent stiffened chords (11) is slidably connected to the corresponding connecting rod (26). Multiple fixing holes are equidistantly opened on the connecting rod (26), and a connecting pin that is inserted into the corresponding fixing hole is installed on the sleeve rod (25).

3. The multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 2, characterized in that, A sleeve (27) is provided between the mounting ring (21) and the corresponding sliding sleeve (24), and a sliding limit block (29) is fixedly connected inside the sleeve (27) by a tension spring (28). A pull rod (210) that moves through the sleeve (27) is fixedly connected to one side of the limit block (29).

4. A multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 3, characterized in that, Both the free ends of the pull rod (210) and the sleeve (27) are fixedly connected with ball heads, and both the mounting ring (21) and the sliding sleeve (24) are fixedly connected with ball sockets that are movably installed with the corresponding ball heads.

5. A multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 1, characterized in that, The Ω-shaped rib (23) has a funnel-shaped cross section, and the top area of ​​the Ω-shaped rib (23) is larger than its bottom area. The bottom of the Ω-shaped rib (23) is provided with multiple drainage holes at equal intervals around the periphery of the buoyancy cylinder (22). The buoyancy cylinder (22) is fixedly connected with reinforcing ribs distributed in a cross pattern.

6. A multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 1, characterized in that, The tops of the multiple sets of stiffened chords (11) are all fixedly connected to the same transition section (14), and the top of the transition section (14) is fixedly connected to an upper platform (15) with a fence installed around its top perimeter.

7. A multi-buoy anti-tilting offshore wind turbine jacket structure according to claim 1, characterized in that, The stiffened chord (11) and stiffened strut (12) are both composed of a steel cylinder (16) and a grid-level stiffening. The grid-level stiffening includes several annular main bars (17) that are fixedly connected at equal intervals to the inner wall of the steel cylinder (16), and multiple annular secondary bars (18) are provided between two adjacent sets of annular main bars (17). Several longitudinal main bars (19) arranged in an annular array are fixedly connected to the inner wall of the steel cylinder (16), and multiple longitudinal secondary bars (110) located between adjacent longitudinal main bars (19).

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