Multi-buoy linkage type floating fan stable foundation structure

Abstract

The invention relates to the technical field of wind power generation, in particular to a multi-buoy linkage type floating fan stable foundation structure which comprises buoys, two wind driven generators installed at the upper ends of the two buoys respectively, three supports arranged at the upper ends of the three buoys in a sleeving mode respectively and fixedly connected with the buoys, one end of a barrel body is fixedly connected with the supports, and the other end of the barrel body is fixedly connected with the wind driven generators. A first piston is slidably mounted on the side, away from the inclined hole, in the barrel, a column rod is inserted in the inclined hole, one end of the column rod extends into the barrel and is fixedly connected with the first piston, a digital negative pressure gauge is mounted on the side, away from the support, of the barrel, and the blowing part is connected with the barrel and used for cleaning attachments, located on the outer side of the barrel, of the column rod. The invention has the following beneficial effects: the mechanical fatigue damage caused by repeated stretching of the strain gauge along with the deformation of the tensioner is avoided, the complex operation of disassembling and replacing the packaging layer is omitted, the replacement frequency of the sensing part is greatly reduced, and the maintenance time and the consumable cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a multi-pontoon linked floating wind turbine stable foundation structure. Background Technology

[0002] With the rapid growth of global demand for clean energy, offshore wind power, as a highly promising renewable energy sector, is expanding into deep-sea areas. In this process, the stability of floating wind turbine foundations has become a key factor determining the success or failure of projects. Multi-buoy linked floating wind turbine stabilization foundations, with their unique structural design and linkage mechanism, enhance the stability of floating wind turbines in harsh marine environments, providing reliable support for the large-scale, efficient development of offshore wind power. Mooring chains are crucial equipment on floating wind turbine platforms, connecting the anchor to the platform to transmit and buffer external forces. Their reliability and safety directly affect the normal operation of the platform. Due to prolonged immersion in seawater, they are susceptible to corrosion and continuously subjected to environmental loads such as wind, waves, and currents. Anchor chains are prone to abnormal tension; if they break under overload, it will pose a significant potential threat to the platform's operational safety. Therefore, tension monitoring and reliability assessment are of strategic importance.

[0003] Chinese invention patent application CN116907568A discloses a monitoring device and method for anchor chain tension in a floating wind turbine mooring system. Its core design concept is to capture stress-strain changes in the tensioner region using a strain sensor array, thereby indirectly monitoring the anchor chain tension. Specifically, this scheme employs a "surround embedding" method, tightly attaching the strain gauge elements of the strain sensor to the surface near the tensioner of the mooring system. The attached sensor elements are then encapsulated to ensure a stable connection with the tensioner surface. Simultaneously, multiple strain gauge elements are arranged in a specific layout to form a sensor array. These sensor arrays are further constructed into a discrete sensor network. When the tensioner experiences minute deformation due to changes in anchor chain tension, the discrete sensor network quickly converts the deformation into a recognizable analog signal. By analyzing the variation patterns of the analog signal, the stress-strain state in the area near the tensioner can be monitored in real time, thereby inversely deducing the tension borne by the anchor chain.

[0004] This monitoring method based on "strain gauge sensor bonding and encapsulation" has obvious pain points and maintenance difficulties in practical applications: On the one hand, the strain gauge sensor needs to be fixed to the surface of the tensioner through an encapsulation process. The encapsulation layer forms a tight integrated structure with the tensioner and the sensor. When one or more strain gauge sensors are damaged and fail due to factors such as seawater corrosion or external impact, the entire encapsulation layer must be removed before the sensor can be replaced. The removal process is not only complicated, but may also damage the surface of the tensioner and even affect the stability of the surrounding undamaged sensors, making it difficult to replace the strain sensor quickly and conveniently after it is damaged. On the other hand, the tensioner will continuously undergo periodic deformation during the tension fluctuation of the anchor chain. The strain gauge sensor bonded to it must repeatedly withstand mechanical stresses such as tension and contraction with the deformation of the tensioner. Long-term repeated stress will accelerate the fatigue wear of the internal structure of the sensor, which is very easy to cause damage such as sensor breakage and decreased sensitivity. As a result, it is necessary to frequently disassemble the encapsulation layer to replace the new strain gauge sensor. Frequent replacement operations not only interrupt the continuous monitoring of anchor chain tension, but also generate a large amount of maintenance labor costs and sensor consumable costs, resulting in high maintenance costs for the entire monitoring system, making it difficult to meet the monitoring needs of long-term and stable operation of floating wind turbine mooring systems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a stable foundation structure for a multi-pontoon linked floating wind turbine, so as to solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides a multi-pontoon linked floating wind turbine stabilization foundation structure, comprising:

[0007] There are three pontoons, which are arranged in a triangular shape and connected by a connecting member.

[0008] Two wind turbines are provided, and the two wind turbines are respectively installed on the upper end of two pontoons;

[0009] The support is provided in three parts. The three supports are respectively sleeved on the upper end of the three floats and connected and fixed to the floats. An inclined hole is opened on the side of the upper surface of the support away from the float.

[0010] A cylindrical body is arranged concentrically with an inclined hole. One end of the cylindrical body is connected and fixed to a support. A first piston is slidably installed on the side of the cylindrical body away from the inclined hole. A column is inserted into the inclined hole. One end of the column extends into the cylindrical body and is connected and fixed to the first piston. A connector for connecting an anchor chain is installed on the end of the column on the outside of the cylindrical body. A digital negative pressure gauge is installed on the side of the cylindrical body away from the support.

[0011] The air blowing component, connected to the cylinder, is used to clean the adhering material on the outer part of the column rod.

[0012] Specifically, the air blowing component includes:

[0013] A cylinder is mounted on the surface of a cylindrical body, the cylinder being arranged parallel to the cylindrical body, and the end of the cylinder away from the support being open;

[0014] The second piston is slidably mounted inside the cylinder;

[0015] A compression spring is disposed inside the cylinder and arranged along the length of the cylinder, with one end of the compression spring in contact with the second piston;

[0016] The connecting rod is installed at the center of the side of the second piston away from the compression spring;

[0017] The linkage plate is fixedly connected to the end of the connecting rod away from the second piston at one end. The outer surface of the cylinder has a strip-shaped opening arranged along the length of the cylinder. The linkage plate passes through the strip-shaped opening. The end of the linkage plate away from the connecting rod is fixedly connected to the column rod.

[0018] The connecting pipe is installed at one end of the closed end of the cylinder and communicates with the internal space of the cylinder;

[0019] The air distribution pipe has one end connected to the end of the connecting pipe away from the cylinder, and the end of the air distribution pipe away from the connecting pipe is closed.

[0020] Multiple annular pipes are provided, each of which is sleeved on a column rod. The multiple annular pipes are equidistantly arranged on the underside of the support. Multiple pipe heads facing the column rod are installed in annular shape on the surface of each annular pipe. Branch pipes are installed on the outer surface of each annular pipe. The end of each straight pipe away from the annular pipe is connected to the air distribution pipe.

[0021] Specifically, the cylinder has a connecting ring fitted at its open end, which is fixed to the cylinder. A cylinder cover is provided on one side of the connecting ring. The cylinder cover is connected to the connecting ring by fasteners formed by multiple sets of first screws and first nuts. A guide hole is provided in the middle of one side of the cylinder cover. The connecting rod passes through the guide hole, and the diameter of the connecting rod is smaller than the inner diameter of the guide hole.

[0022] Specifically, a limiting ring is provided on the side of the connecting ring away from the cylinder cover. There is a gap between the limiting ring and the connecting ring. The limiting ring is sleeved on the cylinder and connected and fixed to the cylinder. The first screw passes through the cylinder cover, the connecting ring and the limiting ring and is then threadedly connected to the first nut.

[0023] Specifically, a cylindrical ring is fitted onto the cylinder and is fixedly connected to the cylinder. A connecting plate is fixedly connected to the outer surface of the cylindrical ring facing the cylinder body. An arc-shaped plate is fixedly connected to the end of the connecting plate away from the cylindrical ring. The arc-shaped plate wraps around the cylinder body and is fixedly connected to the cylinder body.

[0024] Specifically, the connecting component includes an intermediate cylinder, which is disposed between two floats on which wind turbines are installed. A second connecting pipe is installed between the intermediate cylinder and the float on which the wind turbines are installed. A third connecting pipe is installed between the intermediate cylinder and the float on which no wind turbines are installed. A first connecting pipe is installed between the float on which no wind turbines are installed and the other two floats.

[0025] Specifically, the connector includes a hemispherical seat, and a hemispherical seat is installed at the end of the rod away from the first piston. A sphere is rolled inside the hemispherical seat, and an ear for connecting the anchor chain is installed on the surface of the sphere. A through hole is opened on one side of the ear.

[0026] Specifically, the digital negative pressure gauge has a shielding sleeve on its outer side. The end of the shielding sleeve facing the cylinder is open. A conduit communicating with the internal space of the shielding sleeve is installed on the outer surface of the end of the shielding sleeve away from the cylinder. A ring is fitted on the open end of the shielding sleeve and is fixed to the shielding sleeve. A docking ring is fitted on the end of the cylinder near the shielding sleeve and is fixed to the cylinder. The ring is connected to the docking ring by fasteners formed by multiple sets of second screws and second nuts.

[0027] Specifically, a support ring is provided on the side of the docking ring away from the ring. The support ring is sleeved on the cylinder and connected and fixed to the cylinder. There is a gap between the support ring and the docking ring. One end of the second screw passes through the ring, the docking ring and the support ring in sequence and is then threaded to the second nut.

[0028] Specifically, a drain outlet is provided at the end of the support away from the pontoon, and the drain outlet communicates with the space formed by the pontoon and the support.

[0029] The beneficial effects of this invention are:

[0030] Through the mechanical transmission structure of the cylinder, the first piston, and the rod, changes in anchor chain tension can be directly converted into changes in pressure inside the cylinder. When the anchor chain is pulled by the rod, the rod causes the first piston inside the cylinder to slide, changing the pressure in the enclosed space of the cylinder. A digital negative pressure gauge captures this pressure signal in real time and deduces the anchor chain tension value in reverse. This direct pressure-tension monitoring method does not rely on traditional bonded strain gauge sensors, avoiding mechanical fatigue damage caused by repeated stretching of the strain gauge due to the deformation of the tensioner. It also eliminates the complex operation of disassembling and replacing the encapsulation layer, significantly reducing the replacement frequency of sensing components, lowering maintenance time and consumable costs. At the same time, the pressure gauge readings are intuitive and the accuracy is stable, making it suitable for long-term monitoring needs in deep-sea areas.

[0031] When the anchor chain drives the column to slide along the inclined hole, the column pulls the connecting rod through the linkage plate, causing the second piston inside the cylinder to compress the spring. Air inside the cylinder is then forced into the annular pipe through the connecting pipe and air distribution pipe, and finally ejected from the annular pipe toward the head of the column. This linkage design of column movement and air jet can blow away seawater, algae, silt, and other impurities attached to the outside of the column in real time, avoiding the accumulation of impurities that could cause the column to jam or corrode. This ensures smooth column sliding, guarantees the effective transmission of anchor chain tension to the internal pressure of the cylinder, and reduces the frequency of manual cleaning, thus lowering maintenance difficulty.

[0032] The three pontoons are arranged in a triangular shape. The triangular structure has natural stability and can evenly distribute the weight of the wind turbine and the wind and wave load. The three pontoons are connected by a middle cylinder, a first connecting pipe, a second connecting pipe, and a third connecting pipe, so that the water between the pontoons can flow between them. When the foundation is tilted by wind and waves, the water in the pontoons automatically adjusts to balance, reduce the tilt angle of the foundation, and improve the anti-overturning ability. At the same time, the two wind turbines are installed on two pontoons respectively, with a balanced weight distribution, further reducing the risk of foundation eccentric load. Attached Figure Description

[0033] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0034] Figure 1 This is a structural schematic diagram of a multi-pontoon linked floating wind turbine stabilization foundation structure according to the present invention;

[0035] Figure 2 This is another perspective view of the stable foundation structure of a multi-pontoon linked floating wind turbine according to the present invention;

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is an assembly diagram of the cylinder, cylindrical body, and support in a multi-pontoon linkage floating wind turbine stabilization foundation structure according to the present invention.

[0038] Figure 5 This is an exploded structural diagram of the column, cylinder, and tube body in a multi-pontoon linkage floating wind turbine stabilization foundation structure of the present invention;

[0039] Figure 6 This is a schematic diagram of the assembly of the column rod, cylinder and cylinder body in the multi-pontoon linkage floating wind turbine stabilization foundation structure of the present invention;

[0040] Figure 7 This is a schematic diagram of the assembly of the annular pipe and the air distribution pipe in the stable foundation structure of a multi-pontoon linked floating wind turbine of the present invention.

[0041] In the picture:

[0042] 1. Float; 11. First connecting pipe; 12. Intermediate cylinder; 13. Second connecting pipe; 14. Third connecting pipe;

[0043] 2. Wind turbine generator;

[0044] 3. Cylinder body; 31. Column; 32. Hemispherical seat; 33. Ear seat; 34. Support ring; 35. Connecting ring; 36. Sphere; 37. First piston; 38. Strip-shaped opening;

[0045] 4. Sheathing sleeve; 41. Loop; 42. Conduit;

[0046] 5. Support; 51. Drainage outlet;

[0047] 6. Cylinder; 61. Cylindrical ring; 62. Limiting ring; 63. Connecting ring; 64. Cylinder cover; 65. Arc plate; 66. Connecting pipe; 67. Annular pipe; 68. Connecting rod; 69. Linkage plate; 610. Air distribution pipe; 611. Compression spring; 612. Second piston; 613. Pipe head; 614. Branch pipe;

[0048] 7. Digital negative pressure gauge. Detailed Implementation

[0049] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0050] Please see Figures 1-7This invention provides a technical solution: a multi-pontoon linked floating wind turbine stable foundation structure, including three pontoons 1 arranged in a triangular shape, two wind turbine generators 2 installed on the upper ends of two pontoons 1 respectively, an intermediate cylinder 12 positioned between the two pontoons 1 with wind turbine generators 2 installed, a second connecting pipe 13 installed between the intermediate cylinder 12 and the pontoons 1 with wind turbine generators 2 installed, a third connecting pipe 14 installed between the intermediate cylinder 12 and the pontoons 1 without wind turbine generators 2 installed, and a first connecting pipe 11 installed between the pontoons 1 without wind turbine generators 2 and the other two pontoons 1. The three pontoons 1 are arranged symmetrically in a triangular shape. This layout relies on the non-deformable geometric properties of triangles to form a natural structural stability framework. The triangular layout can evenly distribute the weight of the wind turbine tower, the self-weight of the equipment, and the lateral and vertical loads generated by wind and waves to the three pontoons 1, avoiding overload or local stress damage to a single pontoon 1 due to concentrated force. Whether it is the horizontal thrust of strong winds on the wind turbine or the impact load of giant waves on pontoon 1, the triangular structure can optimize the load transfer path into multi-point uniform bearing through the coordinated force of the three support points, greatly reducing the overall deformation risk of the foundation and ensuring that pontoon 1 always maintains a stable posture in harsh environments.

[0051] To further enhance the dynamic balance capability of the pontoon 1 system, the scheme connects the three pontoons 1 through a combination of an intermediate cylinder 12, a first connecting pipe 11, a second connecting pipe 13, and a third connecting pipe 14. The intermediate cylinder 12, serving as the water regulation hub, is positioned between the two pontoons 1 equipped with wind turbines 2. Simultaneously, the intermediate cylinder 12 connects to the pontoon 1 without wind turbines 2 via the third connecting pipe 14. The pontoon 1 without wind turbines 2 is also directly connected to the other two pontoons 1 equipped with wind turbines 2 via the first connecting pipe 11, forming a hub-and-branch water circulation network. This interconnected design allows the water inside the three pontoons 1 to flow freely. When the foundation tilts due to wind and waves (e.g., one pontoon 1 rises due to wind and waves while the other sinks), the water inside the pontoons 1 can automatically flow along the connecting pipes to the lower pontoon 1. By changing the local weight distribution of the pontoons 1, a reverse balancing torque is generated, counteracting the tilting force of the foundation, thereby quickly adjusting the foundation's attitude and reducing the tilt angle. For example, when the pontoon 1 on one side with the wind turbine 2 tends to sink due to wind and wave pressure, water can flow through the first connecting pipe 11 and the second connecting pipe 13 to the pontoon 1 without the wind turbine 2, reducing the weight of the sinking pontoon 1 and increasing the weight of the other pontoon 1, achieving dynamic balance and effectively improving the foundation's anti-overturning ability.

[0052] Furthermore, the balanced installation of the two wind turbines 2 further optimizes the weight distribution of the foundation. The two wind turbines 2 are fixed to the upper ends of two of the three pontoons 1, rather than being concentrated on a single pontoon 1 or the same side. This distributed counterweight design ensures that the center of gravity of the pontoon 1 system remains near the geometric center of the triangular layout, preventing foundation center of gravity shift due to weight concentration and reducing the risk of eccentric loading. When the wind turbines 2 vibrate during operation or are disturbed by strong winds, the balanced weight distribution reduces the swaying of the foundation caused by center of gravity shift. Combined with the stable support of the triangular layout and water body regulation, this forms a triple guarantee of structural stability, dynamic balance, and balanced counterweight, comprehensively improving the overall stability of the multi-pontoon interconnected foundation and adapting to the long-term, high-efficiency wind power development needs in deep-sea areas.

[0053] Three supports 5 are provided, and the three supports 5 are respectively sleeved on the upper end of the three floats 1 and connected and fixed to the floats 1. An inclined hole is opened on the upper surface of the support 5 away from the float 1. The cylinder 3 is arranged concentrically with the inclined hole. One end of the cylinder 3 is connected and fixed to the support 5. A first piston 37 is slidably installed in the cylinder 3 away from the inclined hole. A column rod 31 is inserted in the inclined hole. One end of the column rod 31 extends into the cylinder 3 and is connected and fixed to the first piston 37. A digital negative pressure gauge 7 is installed on the side of the cylinder 3 away from the support 5. The cylinder 3 is the core bearing and pressure transmission carrier. One end of the cylinder 3 is fixed to the support 5 at the upper end of the float 1 and is arranged concentrically with the inclined hole of the support 5. One end of the column rod 31 passes through the inclined hole and extends into the inner cavity of the cylinder 3, and is rigidly connected to the first piston 37 slidably installed in the cylinder 3 away from the inclined hole. This mechanical transmission path of anchor chain, column rod 31, first piston 37 and cylinder 3 constructs a direct conversion channel for tension and pressure. When the anchor chain is subjected to changes in force due to wind, waves, and currents (such as the increase or decrease in anchor chain tension caused by wind and wave impact), the anchor chain will pull or push the column rod 31 to move axially along the inclined hole. The column rod 31 simultaneously drives the first piston 37 inside the cylinder 3 to slide. The digital negative pressure gauge 7 installed at the end of the cylinder 3 away from the support 5 can capture the pressure change signal inside the cylinder 3 in real time and convert it into an intuitive digital reading. The staff can deduce the current tension value of the anchor chain by reading the digital negative pressure gauge 7. There is a stable linear correspondence between pressure and tension, without the need for complex signal conversion or algorithm correction, making the monitoring process direct and efficient.

[0054] This direct pressure-tension monitoring method has significant advantages over traditional monitoring schemes that rely on bonded and encapsulated strain gauge sensors: Firstly, it eliminates the need to fix the strain gauge sensors to the tensioner surface through encapsulation, completely avoiding the problem of the strain gauge repeatedly bearing tensile and contractile mechanical stresses due to the periodic deformation of the tensioner. This fundamentally prevents the strain gauge from breaking or losing sensitivity due to fatigue wear, significantly reducing the probability of damage to the sensing components. Secondly, it eliminates the complex operation of disassembling and replacing the encapsulation layer when the strain gauge is damaged, as required by traditional solutions. The digital negative pressure gauge 7 can be repaired or replaced without interrupting the anchor chain tension monitoring, reducing maintenance time and costs. At the same time, it avoids the damage that disassembling the encapsulation layer may cause to the tensioner surface and the impact on the stability of surrounding sensing elements.

[0055] In addition, the digital negative pressure gauge 7 has the characteristics of intuitive reading and stable accuracy. It does not require manual estimation and can accurately reflect the pressure changes inside the cylinder 3, thereby ensuring the accuracy of anchor chain tension monitoring; it is suitable for the long-term and reliable tension monitoring needs of deep-sea floating wind turbine mooring systems.

[0056] The digital negative pressure gauge 7 has a shielding sleeve 4 on its outer side. The end of the shielding sleeve 4 facing the cylinder 3 is open. The outer surface of the end of the shielding sleeve 4 away from the cylinder 3 is fitted with a conduit 42 that communicates with the internal space of the shielding sleeve 4. The open end of the shielding sleeve 4 is fitted with a ring 41 that is fixed to the shielding sleeve 4. The end of the cylinder 3 near the shielding sleeve 4 is fitted with a docking ring 35 that is fixed to the cylinder 3. The ring 41 is connected to the docking ring 35 by fasteners formed by multiple sets of second screws and second nuts. The shielding sleeve 4 on the outside of the digital negative pressure gauge 7 is fixed to the cylinder 3 through the ring 41 and the docking ring 35, forming a closed protective space that can block seawater splash, salt spray corrosion and wind and wave impact. The conduit 42 is designed to facilitate the orderly arrangement of the cables of the digital negative pressure gauge 7. The clearance fit between the support ring 34 and the docking ring 35 not only enhances the installation stability of the shielding sleeve 4, but also reserves operating space for pressure gauge maintenance, further ensuring the long-term reliable operation of the monitoring system.

[0057] A support ring 34 is provided on the side of the docking ring 35 away from the ring 41. The support ring 34 is sleeved on the cylinder 3 and connected and fixed to the cylinder 3. There is a gap between the support ring 34 and the docking ring 35. One end of the second screw passes through the ring 41, the docking ring 35 and the support ring 34 in sequence and is then threaded to the second nut. Under the support of the support ring 34, there is a gap between the second nut and the docking ring 35. When the second screw and the second nut cannot be disassembled normally due to corrosion, the second screw can be cut off by using the gap between the support ring 34 and the docking ring 35.

[0058] A hemispherical seat 32 is installed at the end of the rod 31 away from the first piston 37. A sphere 36 is rolled inside the hemispherical seat 32. An ear seat 33 for connecting the anchor chain is installed on the spherical surface of the sphere 36. One side of the ear seat 33 has a through hole, allowing the sphere 36 to roll freely within the hemispherical seat 32. This allows the anchor chain connected to the ear seat 33 to adjust its angle according to changes in wind and wave direction, preventing excessive bending or tension concentration of the anchor chain due to forced force. It also buffers the impact of wind and wave flow on the connection between the anchor chain and the rod 31, reducing the anchor chain's stress. To mitigate the risk of chain breakage and ensure stable axial transmission of tension along the column 31 to the cylinder 3, a drain outlet 51 is provided at the end of the support 5 away from the float 1. The drain outlet 51 communicates with the space formed by the cylinder 3 and the support 5. The drain outlet 51 at the end of the support 5 away from the float 1 communicates with the space formed by the cylinder 3 and the support 5, which can promptly drain accumulated water caused by rainwater and seawater backflow, prevent the accumulated water from growing and corroding in the enclosed space, and extend the service life of the support 5 and the cylinder 3. It is especially suitable for high humidity and rainy marine environments.

[0059] A cylinder 6 is mounted on the surface of a cylinder body 3. A ring 61, which is fixed to and connected to the cylinder 6, is fitted onto the cylinder 6. A connecting plate is fixed to the outer surface of the ring 61 facing the cylinder body 3. An arc-shaped plate 65 is fixed to the end of the connecting plate away from the ring 61. The arc-shaped plate 65 wraps around the cylinder body 3 and is fixed to it. The arc-shaped plate 65 wraps around the surface of the cylinder body 3, increasing the contact area and ensuring that the cylinder 6 does not sway under the impact of wind and waves. The cylinder 6 is arranged parallel to the cylinder body 3. The end of the cylinder 6 away from the support 5 is open. A connecting ring 63, which is fixed to and connected to the cylinder 6, is fitted onto the open end of the cylinder 6. A cylinder cover 64 is provided on one side of the connecting ring 63. The cylinder cover 64 is connected to the connecting ring 63 by fasteners formed by multiple sets of first screws and first nuts. A guide hole is opened in the middle of one side of the cylinder cover 64. A connecting rod 68 passes through the guide hole. The diameter of the connecting rod 68 is smaller than the inner diameter of the guide hole. The cap 64 seals the opening of the cylinder 6, preventing seawater from entering the cylinder 6 and affecting the sliding of the second piston 612; these detailed designs enhance the overall structure's resistance to wind and waves and corrosion, making it suitable for harsh sea conditions in deep seas.

[0060] A limiting ring 62 is provided on the side of the connecting ring 63 away from the cylinder cover 64. There is a gap between the limiting ring 62 and the connecting ring 63. The limiting ring 62 is sleeved on the cylinder 6 and connected and fixed to the cylinder 6. The first screw passes through the cylinder cover 64, the connecting ring 63 and the limiting ring 62 and is threaded to the first nut. When the first screw and the first nut cannot be separated normally due to rust, the first screw can be cut off by using the gap between the limiting ring 62 and the connecting ring 63.

[0061] The second piston 612 is slidably installed inside the cylinder 6. A compression spring 611 is disposed inside the cylinder 6 and arranged along its length. One end of the compression spring 611 contacts the second piston 612. A connecting rod 68 is installed at the midpoint of the side of the second piston 612 facing away from the compression spring 611. One end of the linkage plate 69 is connected and fixed to the end of the connecting rod 68 away from the second piston 612. A strip-shaped opening 38 is provided on the outer surface of the cylinder 3, arranged along its length. The linkage plate 69 passes through the strip-shaped opening 38. The end of the linkage plate 69 away from the connecting rod 68 is connected and fixed to the rod 31. The connecting pipe 6... One end of the gas distribution pipe 610 is installed at the closed end of the cylinder 6 and communicates with the internal space of the cylinder 6. One end of the gas distribution pipe 610 is connected to the end of the connecting pipe 66 away from the cylinder 6. The end of the gas distribution pipe 610 away from the connecting pipe 66 is closed. Multiple annular pipes 67 are provided. Multiple annular pipes 67 are all sleeved on the column rod 31. Multiple annular pipes 67 are equidistantly arranged on the lower side of the support 5. Multiple pipe heads 613 facing the column rod 31 are installed in annular shape on the surface of the annular pipe 67. A branch pipe 614 is installed on the outer surface of the annular pipe 67. The end of the branch pipe 614 away from the annular pipe 67 is connected to the gas distribution pipe 610. Multiple annular tubes 67 are equidistantly sleeved on the column rod 31. Each annular tube 67 has tube heads 613 distributed equidistantly in an annular pattern on its surface. Airflow can be evenly sprayed out from the 360° circumference of the column rod 31, covering multiple outer surfaces of the column rod 31. It can achieve precise cleaning, especially for the parts of the column rod 31 that are prone to dirt accumulation at the connection with the inclined hole, and avoid local impurities from affecting the operation of the structure.

[0062] Using the sliding motion of the column rod 31 as the power source, a complete closed loop of mechanical transmission, airflow generation, and impurity removal is constructed. When the anchor chain is subjected to force changes under the action of wind, waves, and currents, causing the column rod 31 to slide back and forth along the inclined hole, the column rod 31 will simultaneously pull the linkage plate 69. The linkage plate 69 will then drive the connecting rod 68 to move axially along the cylinder 6, thereby causing the second piston 612 inside the cylinder 6 to slide towards the compression spring 611, compressing the compression spring 611. During this process, the sliding of the second piston 612 will compress the closed space inside the cylinder 6, causing the air inside the cylinder 6 to form an airflow with a certain pressure. This airflow will then enter the air distribution pipe 610 through the connecting pipe 66 connected to the closed end of the cylinder 6, and be diverted by the air distribution pipe 610 to multiple annular pipes 67 sleeved on the column rod 31. Finally, it will be ejected at high speed from the pipe heads 613 arranged equidistantly on the surface of the annular pipes 67 and facing the column rod 31, directly acting on the outer surface of the column rod 31.

[0063] This integrated design achieves real-time synchronization between impurity cleaning and the movement of the column 31. It can specifically remove various impurities attached to the outside of the column 31. In deep-sea environments, the column 31 is often immersed or exposed to seawater, which easily leads to the accumulation of residual salt, dirt formed by dead plankton, and silt and algae spores carried by ocean currents. If these impurities accumulate over a long period, they will fill the gap between the column 31 and the inclined hole, causing the column 31 to jam when sliding, affecting the smooth transmission of anchor chain tension to the internal pressure of the cylinder 3. On the other hand, the combined action of impurities and seawater will accelerate the corrosion of the surface of the column 31, shortening its service life. The airflow ejected from the annular pipe 67 can form an air curtain around the column 31, blowing away impurities from the 360° circumference of the column 31 without dead angles. Especially for the parts of the column 31 that are prone to dirt accumulation at the junction with the inclined hole, the high-speed airflow can directly impact the residual impurities in the gaps, ensuring that the outside of the column 31 remains clean at all times.

[0064] Meanwhile, this automatic cleaning design significantly optimizes the maintenance process. Traditional cleaning of impurities on the column 31 requires regular manual diving operations, which are not only difficult and risky, but also require interruption of anchor chain tension monitoring, resulting in high maintenance costs. In contrast, this solution achieves real-time cleaning without an additional power source by linking the movement of the column 31 with the air jet. This significantly reduces the frequency of manual cleaning, lowers the difficulty and cost of underwater maintenance, and ensures smooth long-term sliding of the column 31, ensuring the effective transmission of anchor chain tension to the internal pressure of the cylinder 3. This provides dual protection for the accuracy of anchor chain tension monitoring and the stable operation of the foundation structure.

[0065] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-pontoon linked floating wind turbine stabilizing foundation structure, characterized in that, include: Three pontoons (1) are provided, and the three pontoons (1) are arranged in a triangular shape and connected to each other by a connecting member; Two wind turbines (2) are provided, and the two wind turbines (2) are respectively installed on the upper end of two floats (1); Support (5), three of them are provided. The three supports (5) are respectively sleeved on the upper end of the three floats (1) and connected and fixed to the floats (1). An inclined hole is opened on the side of the upper surface of the support (5) away from the float (1). A cylinder (3) is arranged concentrically with an inclined hole. One end of the cylinder (3) is connected and fixed to a support (5). A first piston (37) is slidably installed on the side of the cylinder (3) away from the inclined hole. A rod (31) is inserted into the inclined hole. One end of the rod (31) extends into the cylinder (3) and is connected and fixed to the first piston (37). A connector for connecting an anchor chain is installed at the end of the rod (31) outside the cylinder (3). A digital negative pressure gauge (7) is installed on the side of the cylinder (3) away from the support (5). The air blowing component is connected to the cylinder (3) and is used to clean the residue attached to the outer part of the column rod (31) on the cylinder (3).

2. The multi-pontoon linked floating wind turbine stabilization foundation structure according to claim 1, characterized in that: The air blowing component includes: A cylinder (6) is installed on the surface of a cylinder body (3). The cylinder (6) is arranged parallel to the cylinder body (3). The end of the cylinder (6) away from the support (5) is open. The second piston (612) is slidably mounted inside the cylinder (6); A compression spring (611) is disposed inside the cylinder (6) and arranged along the length of the cylinder (6), and one end of the compression spring (611) is in contact with the second piston (612); The connecting rod (68) is installed at the middle of the side of the second piston (612) away from the compression spring (611); The linkage plate (69) is fixedly connected at one end to the end of the connecting rod (68) away from the second piston (612). The outer surface of the cylinder (3) is provided with a strip-shaped opening (38) arranged along the length direction of the cylinder (3). The linkage plate (69) passes through the strip-shaped opening (38). The end of the linkage plate (69) away from the connecting rod (68) is fixedly connected to the column rod (31). The connecting pipe (66) is installed at one end of the closed end of the cylinder (6) and communicates with the internal space of the cylinder (6); The air distribution pipe (610) is connected to the end of the connecting pipe (66) away from the cylinder (6) at one end, and the end of the air distribution pipe (610) away from the connecting pipe (66) is closed. Multiple annular pipes (67) are provided, and each annular pipe (67) is sleeved on the column rod (31). The multiple annular pipes (67) are equidistantly arranged on the underside of the support (5). Multiple pipe heads (613) facing the column rod (31) are installed in annular shape on the surface of the annular pipe (67). A branch pipe (614) is installed on the outer surface of the annular pipe (67). The end of the branch pipe (614) away from the annular pipe (67) is connected to the air distribution pipe (610).

3. The multi-pontoon linkage floating wind turbine stabilization foundation structure according to claim 2, characterized in that: The open end of the cylinder (6) is fitted with a connecting ring (63) that is fixed to the cylinder (6). A cylinder cover (64) is provided on one side of the connecting ring (63). The cylinder cover (64) is connected to the connecting ring (63) by fasteners formed by multiple sets of first screws and first nuts. A guide hole is provided in the middle of one side of the cylinder cover (64). The connecting rod (68) passes through the guide hole. The diameter of the connecting rod (68) is smaller than the inner diameter of the guide hole.

4. The multi-pontoon linkage floating wind turbine stabilization foundation structure according to claim 3, characterized in that: The connecting ring (63) has a limiting ring (62) on the side away from the cylinder cover (64). There is a gap between the limiting ring (62) and the connecting ring (63). The limiting ring (62) is sleeved on the cylinder (6) and connected and fixed to the cylinder (6). The first screw passes through the cylinder cover (64), the connecting ring (63) and the limiting ring (62) and is then threaded to the first nut.

5. The multi-pontoon linked floating wind turbine stabilization foundation structure according to claim 4, characterized in that: A cylindrical ring (61) is fitted on the cylinder (6) and fixed to the cylinder (6). A connecting plate is fixed to the outer surface of the cylindrical ring (61) facing the cylinder body (3). An arc plate (65) is fixed to the end of the connecting plate away from the cylindrical ring (61). The arc plate (65) wraps around the cylinder body (3) and is fixed to the cylinder body (3).

6. The multi-pontoon linked floating wind turbine stabilization foundation structure according to claim 1, characterized in that: The connecting component includes an intermediate cylinder (12), which is disposed between two pontoons (1) on which the wind turbine generator (2) is installed. A second connecting pipe (13) is installed between the intermediate cylinder (12) and the pontoon (1) on which the wind turbine generator (2) is installed. A third connecting pipe (14) is installed between the intermediate cylinder (12) and the pontoon (1) on which the wind turbine generator (2) is not installed. A first connecting pipe (11) is installed between the pontoon (1) on which the wind turbine generator (2) is not installed and the other two pontoons (1).

7. The multi-pontoon linkage floating wind turbine stabilization foundation structure according to claim 1, characterized in that: The connector includes a hemispherical seat (32), and the end of the rod (31) away from the first piston (37) is equipped with the hemispherical seat (32). A sphere (36) is rolled inside the hemispherical seat (32). An ear seat (33) for connecting the anchor chain is installed on the spherical surface of the sphere (36). One side of the ear seat (33) is provided with a through hole.

8. The multi-pontoon linked floating wind turbine stabilization foundation structure according to claim 1, characterized in that: The digital negative pressure gauge (7) is provided with a shielding sleeve (4) on the outside. The end of the shielding sleeve (4) facing the cylinder (3) is open. The outer surface of the end of the shielding sleeve (4) away from the cylinder (3) is equipped with a conduit (42) that communicates with the internal space of the shielding sleeve (4). The open end of the shielding sleeve (4) is fitted with a ring (41) that is connected and fixed to the shielding sleeve (4). The end of the cylinder (3) near the shielding sleeve (4) is fitted with a docking ring (35) that is connected and fixed to the cylinder (3). The ring (41) is connected to the docking ring (35) by fasteners formed by multiple sets of second screws and second nuts.

9. The multi-pontoon linkage floating wind turbine stabilization foundation structure according to claim 8, characterized in that: The docking ring (35) has a support ring (34) on the side away from the ring (41). The support ring (34) is sleeved on the cylinder (3) and connected and fixed to the cylinder (3). There is a gap between the support ring (34) and the docking ring (35). One end of the second screw passes through the ring (41), the docking ring (35) and the support ring (34) in sequence and is then threaded to the second nut.

10. The multi-pontoon linked floating wind turbine stabilization foundation structure according to claim 1, characterized in that: The support (5) has a drain outlet (51) at the end away from the float (1), and the drain outlet (51) communicates with the space formed by the cylinder (3) and the support (5).

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