Floating type fan foundation launching system and floating type fan foundation launching method

Abstract

The invention relates to the technical field of ocean engineering, in particular to a floating type draught fan foundation launching system and a floating type draught fan foundation launching method which are used for achieving the efficient, safe and economical launching process. The floating type draught fan foundation launching system comprises a truss structure, the truss structure is provided with height-adjustable multi-stage jacking mechanisms, the multiple multi-stage jacking mechanisms are evenly distributed in the length direction of the truss structure, and the tops of the multi-stage jacking mechanisms are provided with supporting interfaces matched with a cross beam of a floating type draught fan foundation platform; the sliding bearing device is arranged below the truss structure and used for bearing the truss structure, and multiple sets of loading wheels and a driving unit used for driving the loading wheels are arranged at the bottom of the sliding bearing device so that the sliding bearing device can be driven to stably move along a preset path; the semi-submersible barge comprises a deck bearing area used for bearing the sliding bearing device; and the adjustable buoyancy cabin is integrated in the semi-submersible barge and is used for adjusting the buoyancy of the semi-submersible barge so as to change the overwater height of the deck bearing area.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean engineering, and particularly relates to a floating wind turbine foundation launching system and a floating wind turbine foundation launching method. Background Art

[0002] With the continuous development of the single-unit capacity of floating wind turbines towards more than 20 MW, the size of its foundation platform has also increased significantly, and the length and width will exceed 100 meters. The enlargement of the foundation poses severe challenges to traditional launching methods. Traditional methods include using a semi-submersible barge for full-load launching, lateral sliding launching, and integral hoisting by a floating crane, etc. However, these methods all expose their respective limitations when dealing with ultra-large foundations.

[0003] Launching by means of a semi-submersible barge for full-load requires the barge deck to completely cover the wind turbine foundation platform. However, the currently available semi-submersible barge with the maximum length usually cannot meet the requirements of such a foundation exceeding 100 meters. This greatly limits the practical application of this method. In addition, although lateral sliding launching is also a feasible solution, this method requires the slipway in the dock area to have sufficient water depth and bearing strength, and during the sliding process, the bottom of the foundation is easily damaged by friction, which poses a test to the safety and integrity of the foundation. Moreover, for the method of integral hoisting and launching relying on a heavy floating crane, in the face of the weight of a wind turbine foundation above 20 MW, it far exceeds the capacity range of a conventional floating crane, which not only leads to a significant increase in the hoisting cost but also is accompanied by high operation risks, making it an undesirable choice in terms of economy and safety. Summary of the Invention

[0004] The present invention provides a floating wind turbine foundation launching system and a floating wind turbine foundation launching method to solve the problems of applicability, cost-effectiveness, and safety faced during the launching of ultra-large floating wind turbine foundations in the prior art, and to achieve an efficient, safe, and economic launching process.

[0005] The present invention provides a floating wind turbine foundation launching system, including: a truss structure, on which a multi-stage jacking mechanism with adjustable height is arranged, and a plurality of the multi-stage jacking mechanisms are evenly distributed along the length direction of the truss structure, and a support interface adapted to the cross beam of the floating wind turbine foundation platform is arranged at the top of the multi-stage jacking mechanism; a sliding and bearing device, arranged under the truss structure for bearing the truss structure, and a plurality of groups of load-bearing wheels and a driving unit for driving the load-bearing wheels are arranged at the bottom of the sliding and bearing device to be able to drive the sliding and bearing device to move smoothly along a preset path; a semi-submersible barge, including: a deck bearing area for bearing the sliding and bearing device; an adjustable buoyancy tank integrated in the semi-submersible barge for adjusting the buoyancy of the semi-submersible barge to change the water level height of the deck bearing area.

[0006] According to an embodiment of the present invention, the multi-stage jacking mechanism adopts a hydraulic drive device or an electric drive device to drive the support interface to rise or fall; the adjustable range of the support height of the support interface is greater than or equal to the maximum height difference between the dock area and the semi-submersible barge.

[0007] According to an embodiment of the present invention, the support interface includes: a flexible pressure-bearing pad, the upper surface of which is an arc surface adapted to the cross beam of the floating wind turbine foundation platform; an angle adjustment mechanism, which is arranged between the flexible pressure-bearing pad and the multi-stage jacking mechanism and is used to adjust the yaw angle of the flexible pressure-bearing pad relative to the multi-stage jacking mechanism.

[0008] According to an embodiment of the present invention, the truss structure includes a plurality of standard truss segments; the two ends of the plurality of standard truss segments are sequentially assembled through quick interfaces; according to the different numbers of assembled standard truss segments, the total length of the truss structure can be flexibly extended to adapt to floating wind turbine foundation platforms of different sizes.

[0009] According to an embodiment of the present invention, the deck bearing area of the semi-submersible barge is paved with strengthened steel plates.

[0010] According to an embodiment of the present invention, the sliding bearing device is provided with a dynamic balance adjustment mechanism, including: a plurality of pressure sensors, which are arranged between multiple groups of load-bearing wheels and the sliding bearing device; a balance controller, which is arranged on the sliding bearing device and is connected to the pressure sensors and the drive unit, and is used to adjust the output power of the drive unit according to the pressure information fed back by the pressure sensors.

[0011] The present invention also provides a method for launching a floating wind turbine foundation. Based on the floating wind turbine foundation launching system of the above embodiment, it includes: in the dock area, jacking up the floating wind turbine foundation platform through the truss structure and the sliding bearing device; carrying the floating wind turbine foundation platform to the semi-submersible barge through the sliding bearing device; the semi-submersible barge moves to the deep water area, and the water height of the deck bearing area is reduced so that the truss structure is smoothly separated from the floating wind turbine foundation platform.

[0012] According to an embodiment of the present invention, the step of jacking up the floating wind turbine foundation platform through the truss structure and the sliding bearing device includes: assembling the truss structure onto the sliding bearing device in the dock area; the sliding bearing device moves to directly below the floating wind turbine foundation platform; adjusting the multi-stage jacking mechanism of the truss structure to make the support interface closely fit the bottom of the cross beam of the floating wind turbine foundation platform; continuously lifting the multi-stage jacking mechanism until the floating wind turbine foundation platform is lifted off the support seat in the dock area.

[0013] According to an embodiment of the present invention, the step of carrying the floating wind turbine foundation platform onto the semi-submersible barge through the sliding bearing device includes: moving the semi-submersible barge to berth at the dock area; adjusting the height of the deck bearing area of the semi-submersible barge through the adjustable buoyancy tank to make it close to the height of the dock area; the sliding bearing device carrying the floating wind turbine foundation platform is translated above the semi-submersible barge, so that the middle part of the floating wind turbine foundation platform is located on the deck bearing area; adjusting the height of the deck bearing area of the semi-submersible barge through the adjustable buoyancy tank, so that the columns of the suspended parts on both sides of the floating wind turbine foundation platform are immersed in water to obtain buoyancy-assisted support.

[0014] According to an embodiment of the present invention, the step of reducing the waterborne height of the deck bearing area to smoothly separate the truss structure from the floating wind turbine foundation platform includes: injecting water into the adjustable buoyancy tank to make the semi-submersible barge slowly submerge; during the submerging process of the semi-submersible barge, the buoyancy obtained by the floating wind turbine foundation platform gradually increases until it floats completely; the semi-submersible barge continues to submerge until it is in a non-contact state with the floating wind turbine foundation platform, completing the launching operation.

[0015] The floating wind turbine foundation launching system and the floating wind turbine foundation launching method provided by the present invention realize effective lifting and stable movement of the super-large floating wind turbine foundation platform by adopting a multi-stage lifting mechanism with adjustable height arranged on the truss structure and configuring a sliding bearing device below the truss structure. Multiple multi-stage lifting mechanisms are evenly distributed along the length direction of the truss structure, ensuring the smoothness and accuracy of the lifting process, and the support interface adapted to the cross beam of the wind turbine foundation platform at the top further enhances the stability. The multi-group load-bearing wheels and drive units at the bottom of the sliding bearing device can move smoothly along the preset path, effectively avoiding the problem that the bottom of the foundation is easily damaged by friction during the traditional lateral sliding launching process. In addition, by using a semi-submersible barge and integrating an adjustable buoyancy tank to adjust the buoyancy, the waterborne height of the deck bearing area can be flexibly adjusted, so as to ensure that the truss structure and the floating wind turbine foundation platform can be smoothly separated in deep water areas, not only solving the problem of the size limitation of the full-bearing launching of semi-submersible barges in the prior art, but also greatly reducing the operation cost and risk, and realizing an efficient, safe and economical launching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the floating wind turbine foundation launching system provided by the present invention.

[0018] Figure 2 It is a schematic structural diagram of the truss structure of the floating wind turbine foundation launching system provided by the present invention.

[0019] Figure 3 It is a schematic flowchart of the floating wind turbine foundation launching method provided by the present invention.

[0020] Reference numerals: 10. Truss structure; 11. Multi-stage jacking mechanism; 12. Support interface; 20. Sliding bearing device; 30. Semi-submersible barge; 31. Deck bearing area; 41. Cross beam; 42. Dock area. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] Traditionally, the slip launching method for floating wind turbine foundations has a high dependence on the structure of the dock area and requires corresponding renovations. Moreover, the operating conditions are greatly affected by tides and waves, increasing the implementation difficulty. In addition, semi-submersible barges suitable for foundations over a hundred meters are scarce globally, unable to effectively support the demand for large-scale construction, and the resource accessibility is low.

[0024] In view of this, the present invention provides an innovative launching system and method based on an adjustable truss straddle bearing, aiming to achieve the efficient and safe launching of large floating wind turbine foundations (with a length and width exceeding a hundred meters). Specifically, through a unique straddle layout, the existing semi-submersible barge can carry a foundation platform over a hundred meters without increasing its size. For example, a semi-submersible barge with a width of 70 meters can carry a foundation platform with a width of 100 meters, thus breaking through the limitation of the barge size. At the same time, the buoyancy of the suspended part of the foundation platform in the water is used to offset the possible overturning moment, further enhancing the safety of the operation. In addition, the present invention avoids the need for deep-water slide construction and large-scale renovation of the dock area, reduces the comprehensive construction cost, decreases the infrastructure investment, and realizes an economical and efficient launching process.

[0025] The following combines Figure 1 and Figure 2 to describe the specific implementation manner of the floating wind turbine foundation launching system of the present invention.

[0026] As Figure 1 and Figure 2 shown, the present invention provides a floating wind turbine foundation launching system, including: a truss structure 10, on which a multi-stage jacking mechanism 11 with adjustable height is arranged. A plurality of multi-stage jacking mechanisms 11 are evenly distributed along the length direction of the truss structure 10. At the top of the multi-stage jacking mechanism 11, a support interface 12 adapted to the cross beam 41 of the floating wind turbine foundation platform is provided; a sliding bearing device 20, arranged below the truss structure 10 for carrying the truss structure 10. At the bottom of the sliding bearing device 20, multiple groups of load-bearing wheels and a driving unit for driving the load-bearing wheels are provided to be able to drive the sliding bearing device 20 to move smoothly along a preset path; a semi-submersible barge 30, including: a deck bearing area 31 for carrying the sliding bearing device 20; an adjustable buoyancy tank, integrated within the semi-submersible barge 30, for adjusting the buoyancy of the semi-submersible barge 30 to change the water height of the deck bearing area 31.

[0027] Specifically, the truss structure 10 realizes the flexible jacking of floating wind turbine foundation platforms of different sizes and weights through the multi-stage jacking mechanism 11 thereon. The height of these jacking mechanisms can be adjusted according to actual needs, and their uniform distribution in the length direction of the truss structure 10 ensures balance and stability during the jacking process. The specially designed support interface 12 at the top is designed to fit the cross beam 41 of the wind turbine foundation platform, further ensuring the safety and stability of the jacking operation. The slip bearing device 20 not only provides a stable bearing function but also enables smooth movement within the dock area 42 through the load-bearing wheels and drive unit at its bottom, avoiding the problem of foundation damage that may occur in traditional lateral slip methods. The drive unit can be a motor or an engine, etc. The semi-submersible barge 30 is equipped with adjustable buoyancy tanks, enabling it to flexibly adjust the buoyancy state under different operating conditions, thereby effectively controlling the water height of the deck loading area 31 and ensuring the smooth separation of the foundation platform from the system in deep water.

[0028] In practical applications, the floating wind turbine foundation launching system first uses the truss structure 10 and the slip bearing device 20 to jack up the floating wind turbine foundation platform in the dock area 42. Subsequently, the entire foundation platform is smoothly moved and loaded onto the semi-submersible barge 30 through the slip bearing device 20. Then, the semi-submersible barge 30 sails to the predetermined deep water area. During this process, the state of the buoyancy tanks is adjusted as needed, gradually reducing the water height of the deck loading area 31, enabling the truss structure 10 to be smoothly separated from the floating wind turbine foundation platform, and finally realizing the safe launching of the foundation platform.

[0029] Furthermore, the above floating wind turbine foundation launching system can increase the number of multi-stage jacking mechanisms 11 as needed to cope with larger-sized or heavier foundation platforms. In addition, the design of the slip bearing device 20 can be optimized, such as using more wear-resistant and low-friction coefficient materials to reduce the resistance during movement; an intelligent control system can also be introduced to automatically adjust the height of the jacking mechanism, the slip speed, and the buoyancy adjustment of the buoyancy tanks, improving the operation efficiency and safety of the entire system. In addition, in order to adapt to different marine environmental conditions, it can be considered to equip the semi-submersible barge 30 with additional stability systems, such as side wing pontoons or dynamic positioning systems, to enhance the stability of the ship in complex sea conditions.

[0030] According to a floating wind turbine foundation launching system of the present invention, the multi-stage lifting mechanism 11 adopts a hydraulic driving device or an electric driving device to drive the supporting interface 12 to rise or fall; the adjustable range of the supporting height of the supporting interface 12 is greater than or equal to the maximum height difference between the dock area 42 and the semi-submersible barge 30. The adjustable range of the supporting height of the supporting interface 12 is not only for adapting to the height matching problem during the initial loading process, but also for coping with various complex situations throughout the operation process. For example, when on the semi-submersible barge 30, by adjusting the multi-stage lifting mechanism 11, the draft depths at both ends of the floating wind turbine foundation platform can be controlled to ensure its balance and stability during the movement at sea. This ability is crucial for preventing the tipping risk caused by the center of gravity shift. In addition, when it is necessary to release the foundation platform from the semi-submersible barge 30, by precisely adjusting the height of the multi-stage lifting mechanism 11, the foundation platform can be gradually separated from the supporting structure and smoothly enter the water, avoiding impacts and damages caused by sudden release or imbalance.

[0031] According to a floating wind turbine foundation launching system of the present invention, the supporting interface 12 includes: a flexible pressure-bearing pad, the upper surface of which is an arc surface adapted to the cross beam 41 of the floating wind turbine foundation platform; an angle adjustment mechanism arranged between the flexible pressure-bearing pad and the multi-stage lifting mechanism 11 for adjusting the yaw angle of the flexible pressure-bearing pad relative to the multi-stage lifting mechanism 11. By introducing the flexible pressure-bearing pad and the angle adjustment mechanism, the adaptability and stability of the floating wind turbine foundation launching system are significantly enhanced, and during the lifting and moving processes, the best support and protection can be provided for the floating wind turbine foundation platform.

[0032] The flexible pressure-bearing pad is preferably made of a material with elasticity and wear resistance, and its upper surface is specially designed as an arc surface matching the shape of the cross beam 41 of the floating wind turbine foundation platform, which not only increases the contact area, reduces local stress concentration, but also effectively buffers the vibrations and impacts that may occur during the operation, protecting the foundation platform from damage. In addition, the flexible pressure-bearing pad can adapt to different shapes and sizes of the foundation platform to a certain extent, improving the versatility and flexibility of the system. The angle adjustment mechanism is located between the flexible pressure-bearing pad and the multi-stage lifting mechanism 11, and adjusts the angle of the flexible pressure-bearing pad by mechanical or hydraulic means. This feature enables the overall balance of the floating wind turbine foundation platform to be maintained by precisely adjusting the angles of each support point even under non-horizontal conditions. For example, when the semi-submersible barge 30 is slightly tilted due to sea conditions, by adjusting the angles of each support point, the foundation platform can be ensured to always remain horizontal, avoiding the risk of slipping or tipping caused by imbalance.

[0033] A floating wind turbine foundation launching system according to the present invention, the truss structure 10 includes a plurality of standard truss segments; both ends of the plurality of standard truss segments are sequentially assembled through quick connectors; according to the different numbers of assembled standard truss segments, the total length of the truss structure 10 can be flexibly extended to adapt to floating wind turbine foundation platforms of different sizes. The modular design allows the truss structure 10 to be quickly adjusted and configured according to actual needs to meet the requirements of foundation platforms of various sizes. Specifically, the truss segments are manufactured in a standardized manner, ensuring the consistency of quality and performance, and are easy to produce and manage in inventory. The design of the quick connectors makes the connection between adjacent truss segments both stable and convenient, and the assembly or disassembly can be completed without complex tools or a long assembly process. By changing the number of standard truss segments, the overall length of the truss structure 10 can be flexibly adjusted to enable it to adapt to various floating wind turbine foundation platforms from small to extra-large. For example, when facing a foundation platform with a width of 100 meters, the truss structure 10 can be extended by increasing the number of truss segments to ensure that it is sufficient to cover the width of the entire foundation platform. Conversely, for a smaller foundation platform, the number of truss segments can be reduced to optimize resource allocation and reduce costs.

[0034] A floating wind turbine foundation launching system according to the present invention, the deck bearing area 31 of the semi-submersible barge 30 is paved with reinforcing steel plates. The paving of the reinforcing steel plates not only improves the overall rigidity and durability of the deck, but also effectively disperses the local stress caused by heavy loads, preventing the deck from deforming or being damaged. The foundation platform will exert a huge pressure on the deck during loading, transportation and unloading. By adding additional structural strengthening measures, such as paving reinforcing steel plates, the compressive performance of the deck can be significantly improved to ensure its stability and reliability under complex sea conditions.

[0035] A floating wind turbine foundation launching system according to the present invention, the slip bearing device 20 is provided with a dynamic balance adjustment mechanism, including: a plurality of pressure sensors, which are arranged between multiple sets of load-bearing wheels and the slip bearing device 20; a balance controller, which is arranged on the slip bearing device 20 and connected to the pressure sensors and the drive unit, and is used to adjust the output power of the drive unit according to the pressure information fed back by the pressure sensors. By introducing the dynamic balance adjustment mechanism, the balance state of the slip bearing device 20 during movement can be monitored and adjusted in real time to ensure the safe and stable transportation of the floating wind turbine foundation platform.

[0036] Specifically, multiple pressure sensors are distributed at the connection points between each load-bearing wheel and the sliding bearing device 20 to monitor the actual load borne by each wheel. In this way, it is possible to accurately sense whether there is an imbalance during the movement of the sliding bearing device 20. The balance controller, as the core component of the entire dynamic balance adjustment mechanism, receives data from each pressure sensor and performs analysis and processing. Based on this real-time feedback information, the balance controller can intelligently adjust the output power of each drive unit. If the load on one side is greater than that on the other side, the balance controller will correspondingly increase the power of the drive unit on that side or reduce the power on the opposite side, thereby redistributing the load and restoring the balance state of the system.

[0037] The floating wind turbine foundation launching system according to the preferred embodiment of the present invention adopts a straddle-type mechanical distribution mechanism, the dynamic adaptation ability of an adjustable truss, and a low-interference operation mode, achieving efficient and safe launching operations for ultra-large floating wind turbine foundation platforms. The straddle-type layout enables the semi-submersible barge 30 to only bear the load in the middle of the foundation platform, thereby reducing the requirements for the barge size. For example, a 70-meter-wide barge can carry a 100-meter-wide foundation platform. In addition, the buoyancy generated by the immersion of the suspended side columns of the floating wind turbine foundation platform in water forms an anti-overturning moment, enhancing the safety of the operation and reducing the risk of overturning. This design not only optimizes the barge load-bearing but also utilizes the synergistic effect of buoyancy to improve the stability of the system.

[0038] Furthermore, the truss structure 10 in this system is composed of multiple standard truss segments, which are assembled through quick interfaces, facilitating flexible expansion according to the foundation platforms of different sizes. Each truss segment is provided with a multi-stage jacking mechanism 11 with adjustable height, and a flexible pressure-bearing pad and an angle adjustment mechanism are installed at the top to ensure the best support and maintain the horizontal state of the foundation platform under any circumstances. This design can not only adapt to the height difference between the dock area 42 and the barge and tidal changes but also accurately control the draft depth of the foundation platform during the movement at sea. At the same time, the dynamic balance adjustment mechanism integrated in the sliding bearing device 20, including pressure sensors and a balance controller, can monitor and adjust the load distribution in real time to ensure stability and safety throughout the process.

[0039] In addition, this system adopts a low-interference operation mode, directly using the hardened ground of the existing dock area 42 for operation without permanent modification, greatly reducing the infrastructure investment. For the semi-submersible barge 30, only temporary installation of structural components such as limit blocks and buffer pads is required to meet the operation requirements, simplifying the preparation process and reducing costs.

[0040] Based on the floating wind turbine foundation launching system of the above-described embodiments, the present invention also provides a method for launching a floating wind turbine foundation. The method for launching a floating wind turbine foundation provided by the present invention will be described below. The method for launching a floating wind turbine foundation described below can be correspondingly referred to the floating wind turbine foundation launching system described above.

[0041] Figure 3 is a schematic flow chart of the method for launching a floating wind turbine foundation provided by the present invention. As Figure 3 shown, the method includes the following: Step 110: In the dock area 42, lift the floating wind turbine foundation platform through the truss structure 10 and the sliding bearing device 20. Specifically, multiple standard truss segments are assembled into the required length of the truss structure 10 through quick interfaces, and a flexible pressure pad and an angle adjustment mechanism on the multi-stage lifting mechanism 11 are used to ensure that the support interface 12 can perfectly adapt to the shape and angle of the foundation platform cross beam 41. The hydraulic or electric drive device adjusts the lifting height according to actual needs, so that the foundation platform is smoothly lifted to an appropriate height for subsequent sliding operations. Preferably, during this process, the pressure sensors in the dynamic balance adjustment mechanism monitor the pressure distribution of each load-bearing wheel in real time to ensure the safety and stability of the entire lifting process.

[0042] Step 120: Carry the floating wind turbine foundation platform onto the semi-submersible barge 30 through the sliding bearing device 20. Specifically, after confirming that the foundation platform has been correctly lifted, the drive unit is started, and the load-bearing wheels at the bottom of the sliding bearing device 20 are driven to move smoothly along the preset path. Since the sliding bearing device 20 directly utilizes the existing hardened ground of the dock area 42, there is no need to permanently transform the dock area 42, reducing the infrastructure cost. During the entire sliding process, the balance controller adjusts the output power of each drive unit in real time according to the information fed back by the pressure sensors to maintain load balance and avoid the foundation platform from shifting or being damaged due to overload on any side. Finally, the floating wind turbine foundation platform is safely and smoothly moved and placed on the deck loading area 31 of the semi-submersible barge 30.

[0043] Step 130: The semi-submersible barge 30 moves to the deep water area, and the water level of the deck loading area 31 is lowered to enable the truss structure 10 to be smoothly separated from the floating wind turbine foundation platform. Specifically, after the semi-submersible barge 30 loads the floating wind turbine foundation platform, it sails to the predetermined deep water area. After reaching the target position, by adjusting the adjustable buoyancy tanks integrated in the semi-submersible barge 30, the water level of the deck loading area 31 is gradually lowered, so that the truss structure 10 slowly detaches from the foundation platform. During this process, the suspended side columns gradually immerse in the water, and the buoyancy generated helps to form an anti-overturning moment, further enhancing the operation safety. When the foundation platform is completely separated from the truss structure 10 and floats stably on the water surface, it indicates that the launching process has been successfully completed, and the next installation or commissioning work can be carried out.

[0044] Further, according to a floating wind turbine foundation launching method of the present invention, the steps of jacking up the floating wind turbine foundation platform by the truss structure 10 and the sliding bearing device 20 include: Step 111: Assemble the truss structure 10 onto the sliding bearing device 20 in the dock area 42. Specifically, multiple standard truss segments are connected together through quick interfaces to form the required length of the truss structure 10, and it is firmly installed on the sliding bearing device 20. This process ensures the stability and strength of the entire structure, so that the ultra-large foundation platform can be safely jacked up subsequently.

[0045] Step 112: The sliding bearing device 20 moves to directly below the floating wind turbine foundation platform. Specifically, by using the load-bearing wheels and drive units at the bottom of the sliding bearing device 20, the assembled truss structure 10 is smoothly moved to the predetermined position, that is, directly below the floating wind turbine foundation platform. During this process, the load distribution can be monitored and adjusted in real time through the dynamic balance adjustment mechanism to ensure the stability during the sliding process.

[0046] Step 113: Adjust the multi-stage jacking mechanism 11 of the truss structure 10 so that the support interface 12 closely fits the bottom of the cross beam 41 of the floating wind turbine foundation platform. Specifically, the height of the multi-stage jacking mechanism 11 is precisely controlled by a hydraulic or electric drive device, so that the flexible pressure-bearing pad at the top perfectly fits the cross beam 41 of the foundation platform. The angle adjustment mechanism is used to finely adjust the angle of the support surface to adapt to any uneven situation and ensure uniform force on the support surface.

[0047] Step 114: Continue to lift the multi-stage jacking mechanism 11 until the floating wind turbine foundation platform is lifted off the support seat in the dock area 42. Specifically, after confirming that the support interface 12 has made firm contact, continue to lift the jacking mechanism to gradually raise the foundation platform until it is completely separated from the support seat in the dock area 42. At this time, the foundation platform is completely supported by the truss structure 10 and is ready for the next sliding operation.

[0048] Further, according to a floating wind turbine foundation launching method of the present invention, the step of carrying the floating wind turbine foundation platform onto the semi-submersible barge 30 through the sliding bearing device 20 includes: Step 121, move the semi-submersible barge 30 to berth at the dock area 42. The semi-submersible barge 30 is accurately docked at the designated position to ensure that the deck bearing area 31 is aligned with the dock area 42, facilitating subsequent loading operations.

[0049] Step 122, adjust the height of the deck bearing area 31 of the semi-submersible barge 30 through the adjustable buoyancy tank to make it close to the height of the dock area 42. According to actual needs, adjust the adjustable buoyancy tank inside the semi-submersible barge 30 to lower or raise the height of the deck bearing area 31 to make it close to the ground height of the dock area 42, facilitating the smooth transfer of the foundation platform to the ship by the sliding bearing device 20.

[0050] Step 123, the sliding bearing device 20 carries the floating wind turbine foundation platform and translates it above the semi-submersible barge 30, so that the middle part of the floating wind turbine foundation platform sits on the deck bearing area 31. The sliding bearing device 20 moves smoothly along the preset path, translating the foundation platform from the dock area 42 onto the semi-submersible barge 30, ensuring that its center of gravity is located at the center of the deck bearing area 31 and guaranteeing the stability during transportation.

[0051] Step 124, adjust the height of the deck bearing area 31 of the semi-submersible barge 30 through the adjustable buoyancy tank to immerse the columns of the suspended parts on both sides of the floating wind turbine foundation platform into the water to obtain buoyancy-assisted support. Adjust the buoyancy tank to make the deck bearing area 31 sink slightly, immerse the column parts on both sides of the foundation platform into the water, and use the buoyancy to provide additional support to enhance the overall stability.

[0052] Further, according to a floating wind turbine foundation launching method of the present invention, the step of reducing the waterborne height of the deck bearing area 31 to smoothly separate the truss structure 10 from the floating wind turbine foundation platform includes: Step 131, inject water into the adjustable buoyancy tank to make the semi-submersible barge 30 slowly submerge. The control system gradually injects water into the buoyancy tank to make the semi-submersible barge 30 sink smoothly, reducing the waterborne height of the deck bearing area 31 and preparing for the subsequent release of the foundation platform.

[0053] Step 132, during the process of the semi-submersible barge 30 submerging, the buoyancy obtained by the floating wind turbine foundation platform gradually increases until it completely floats. Specifically, as the semi-submersible barge 30 submerges, the columns of the suspended parts on both sides of the foundation platform gradually immerse deeper into the water, and the generated buoyancy continuously increases, eventually enabling the foundation platform to float on its own and no longer relying on the support of the truss structure 10.

[0054] Step 133: The semi-submersible barge 30 continues to dive until it is in a non-contact state with the floating wind turbine foundation platform, completing the launching operation. Specifically, when the foundation platform floats entirely relying on its own buoyancy, the semi-submersible barge 30 continues to dive until the two are completely separated, marking the successful completion of the launching operation. The foundation platform can then enter the next stage of offshore installation or commissioning work.

[0055] According to the floating wind turbine foundation launching method of the preferred embodiment of the present invention, it breaks through the size limitations of traditional construction conditions. The existing semi-submersible barge 30 resources can be used to complete the launching operation of a foundation platform over 100 meters. There is no need to customize a special barge. For example, a 70-meter-wide semi-submersible barge 30 can carry a 100-meter-wide foundation platform, greatly improving the utilization rate of existing equipment. Secondly, the straddle layout combined with the underwater buoyancy compensation mechanism enables the buoyancy generated by the suspended side columns in the water to form an anti-overturning moment, significantly reducing the risk of overturning and enhancing the safety of the operation. In addition, due to its modular design, this system is applicable to different sea areas and different specifications of wind power projects, with great potential for standardized promotion, providing strong technical support for the rapid deployment of future large-scale offshore wind power projects.

[0056] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials, or characteristics described in connection with that embodiment or mode are included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or modes. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating wind turbine foundation launching system, characterized in that, Comprising: A truss structure (10) is provided with a multi-stage jacking mechanism (11) with adjustable height. A plurality of the multi-stage jacking mechanisms (11) are evenly distributed along the length direction of the truss structure (10). A support interface (12) adapted to the cross beam (41) of the floating wind turbine foundation platform is provided at the top of the multi-stage jacking mechanism (11); A sliding bearing device (20) is arranged below the truss structure (10) for bearing the truss structure (10). A plurality of groups of load wheels and a driving unit for driving the load wheels are arranged at the bottom of the sliding bearing device (20) so as to be able to drive the sliding bearing device (20) to move smoothly along a preset path; A semi-submersible barge (30), comprising: A deck bearing area (31) for bearing the sliding bearing device (20); An adjustable buoyancy tank integrated in the semi-submersible barge (30) for adjusting the buoyancy of the semi-submersible barge (30) to change the waterborne height of the deck bearing area (31).

2. The floating wind turbine foundation launching system according to claim 1, wherein The multi-stage jacking mechanism (11) adopts a hydraulic driving device or an electric driving device to drive the support interface (12) to rise or fall; The adjustable range of the support height of the support interface (12) is greater than or equal to the maximum height difference between the dock area (42) and the semi-submersible barge (30).

3. The floating wind turbine foundation launching system according to claim 2, characterized in that, The support interface (12) comprises: A flexible pressure-bearing pad, the upper surface of which is an arc surface adapted to the cross beam (41) of the floating wind turbine foundation platform; An angle adjusting mechanism arranged between the flexible pressure-bearing pad and the multi-stage jacking mechanism (11) for adjusting the yaw angle of the flexible pressure-bearing pad relative to the multi-stage jacking mechanism (11).

4. The floating wind turbine foundation launching system according to claim 1, wherein, The truss structure (10) comprises a plurality of standard truss segments; The two ends of the plurality of standard truss segments are assembled in sequence through quick interfaces; According to the different numbers of assembled standard truss segments, the total length of the truss structure (10) can be flexibly extended to adapt to floating wind turbine foundation platforms of different sizes.

5. The floating wind turbine foundation launching system according to claim 1, wherein The deck bearing area (31) of the semi-submersible barge (30) is paved with strengthened steel plates.

6. The floating wind turbine foundation launching system according to any one of claims 1 to 5, characterized in that, The sliding bearing device (20) is provided with a dynamic balance adjustment mechanism, comprising: A plurality of pressure sensors arranged between the plurality of groups of load wheels and the sliding bearing device (20); A balance controller arranged on the sliding bearing device (20) and connected to the pressure sensors and the driving unit for adjusting the output power of the driving unit according to the pressure information fed back by the pressure sensors.

7. A method for launching a floating wind turbine foundation, based on the floating wind turbine foundation launching system according to any one of claims 1 to 6, characterized in that, Comprising: In the dock area (42), the floating wind turbine foundation platform is jacked up by the truss structure (10) and the sliding bearing device (20); The floating wind turbine foundation platform is borne onto the semi-submersible barge (30) by the sliding bearing device (20); The semi-submersible barge (30) moves to the deep water area, and the waterborne height of the deck bearing area (31) is reduced so that the truss structure (10) is smoothly separated from the floating wind turbine foundation platform.

8. The floating wind turbine foundation launching method according to claim 7, wherein The steps of jacking up the floating wind turbine foundation platform through the truss structure (10) and the sliding bearing device (20) include: Assembling the truss structure (10) onto the sliding bearing device (20) in the dock area (42); Moving the sliding bearing device (20) to directly below the floating wind turbine foundation platform; Adjusting the multi-stage jacking mechanism (11) of the truss structure (10) so that the support interface (12) closely fits the bottom of the cross beam (41) of the floating wind turbine foundation platform; Continuing to lift the multi-stage jacking mechanism (11) until the floating wind turbine foundation platform is lifted off the support base in the dock area (42).

9. The floating wind turbine foundation launching method according to claim 7, wherein The steps of carrying the floating wind turbine foundation platform onto the semi-submersible barge (30) through the sliding bearing device (20) include: Moving the semi-submersible barge (30) to berth at the dock area (42); Adjusting the height of the deck bearing area (31) of the semi-submersible barge (30) through the adjustable buoyancy tank so that it is close to the height of the dock area (42); The sliding bearing device (20) carrying the floating wind turbine foundation platform is translated above the semi-submersible barge (30) so that the middle part of the floating wind turbine foundation platform is located on the deck bearing area (31); Adjusting the height of the deck bearing area (31) of the semi-submersible barge (30) through the adjustable buoyancy tank so that the columns of the suspended parts on both sides of the floating wind turbine foundation platform are immersed in water to obtain buoyancy-assisted support.

10. The floating wind turbine foundation launching method according to claim 7, wherein, The steps of reducing the waterborne height of the deck bearing area (31) so that the truss structure (10) is smoothly separated from the floating wind turbine foundation platform include: Injecting water into the adjustable buoyancy tank to make the semi-submersible barge (30) slowly submerge; During the process of the semi-submersible barge (30) submerging, the buoyancy obtained by the floating wind turbine foundation platform gradually increases until it floats completely; The semi-submersible barge (30) continues to submerge until it is in a non-contact state with the floating wind turbine foundation platform, completing the launching operation.

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