Multifunctional integral workboat and fan equipment mounting method

Abstract

The invention relates to a multifunctional integral workboat and a fan equipment mounting method.The multifunctional integral workboat comprises a boat body, the boat body is provided with a deck layer, a prow and a stern, the deck layer is located on one side of the top of the boat body, and the prow and the stern are located on the two sides of the boat body in the length direction correspondingly; a supporting truss is arranged on the deck layer, at least two full-rotation cranes are arranged on one side of the top of a supporting frame, and the full-rotation cranes can cover the bow and the stern when rotating; a first embedded area is arranged on the side, facing the bow, of the ship body, the first embedded area is configured to be a piling operation area, the first embedded area is provided with a suspension type precision control positioning frame facility, a second embedded area is arranged on the side, facing the stern, of the ship body, and the second embedded area is configured to be a fan equipment installation operation area. The multifunctional integral workboat can be used for efficiently and conveniently transporting and installing offshore wind turbine equipment in deep sea areas, and is high in applicability to construction window periods under severe sea conditions.

Description

Technical Field

[0001] This application relates to the field of wind turbine equipment installation technology, specifically to a multi-functional integrated construction vessel and a wind turbine equipment installation method. Background Technology

[0002] As offshore wind power resources in nearshore waters both domestically and internationally have reached a certain level of development, the offshore wind power market is expanding towards deep-sea areas and larger-capacity wind turbine equipment. The increasing size and weight of wind turbine foundations with ultra-long jackets pose significant challenges to wind farm construction in deep-sea areas, demanding higher lifting capacity, greater installation precision, and stronger adaptability in both equipment and construction techniques. However, the current equipment capabilities and construction technologies of offshore construction vessels are relatively outdated. Most vessels are equipped with near-shore general-purpose floating cranes and conventional jack-up outrigger installation vessels, and the construction techniques are limited to the conventional "separate transport and installation" process. These outdated capabilities make it difficult to adapt to the harsh marine environment of deep-sea areas and to meet the demands of constructing ultra-long and heavy jacket foundations and installing large-capacity wind turbine equipment. This makes it difficult for deep-sea wind power development to overcome the triple challenge of "large volume, high precision, and short window" constraints.

[0003] The construction characteristics of offshore wind farms in deep-sea areas include ultra-long jacket foundations, large-scale wind turbines, long-distance transportation, and harsh sea conditions. The engineering vessels and construction technologies currently used in near-shore areas will be difficult to adapt to and meet the needs of deep-sea wind power construction, which is detrimental to the development and construction of the deep-sea wind power market. Summary of the Invention

[0004] The first aspect of this application provides a multi-functional integrated construction vessel that integrates transportation, construction and installation, enabling efficient and convenient transportation and installation of wind turbine equipment in deep and remote seas, and is highly adaptable to construction windows under harsh sea conditions.

[0005] The first aspect of this application provides a multi-functional integrated construction vessel comprising a hull having a deck layer, a bow, and a stern. The deck layer is located on the top side of the hull, and the bow and stern are located on opposite sides of the hull along its length. A support truss is provided on the deck layer, and at least two slewing cranes are provided on the top side of the support truss. The slewing cranes can cover the bow and stern when rotating. A first embedded area is provided on the side of the hull facing the bow, and the first embedded area is configured as a piling operation area and is equipped with a suspended precision control and positioning frame. A second embedded area is provided on the side of the hull facing the stern, and the second embedded area is configured as a wind turbine equipment installation operation area.

[0006] In addition, the multi-functional integral construction vessel provided in this application may also have the following additional technical features: In one alternative embodiment, the hull includes an upper hull and a lower hull. The upper hull is fixedly disposed on the top side of the lower hull. The lower hull includes at least two first hulls, which are spaced apart and support the upper hull. The first hulls have a jacket storage area on the side facing the bow for storing jackets. The area between the at least two first hulls is configured as a pipe pile storage area for stacking foundation pipe piles. The first hulls are configured as a wind turbine equipment storage area on the side facing the stern for storing wind turbine equipment.

[0007] In one alternative embodiment, the upper shell includes a plurality of second shells, which are interconnected and disposed on one side of the top of the first shell. The deck layer is disposed on the second shell and adopts a double-sided center-embedded opening structure. The first embedded area is disposed on the side of the second shell facing the bow, and the second embedded area is disposed on the side of the second shell facing the stern.

[0008] In one alternative embodiment, the first hull and the second hull are respectively provided with inlet and outlet ports, through which water can be filled and drained into the first hull and the second hull respectively, so as to submerge and surface the hull.

[0009] In one alternative embodiment, the suspended precision control and positioning frame facility includes a suspension device and a precision control and positioning frame; the sidewalls of the hull are provided with anchor cables for fixed berthing.

[0010] The second aspect of this application provides a method for installing wind turbine equipment, which uses the multi-functional integrated construction vessel described in the first aspect embodiment to install wind turbine equipment in deep-sea areas. The wind turbine equipment installation method includes the following steps: 1) Dock the hull at the foundation manufacturing wharf, use a full-rotation crane to lift the jacket to the jacket storage area of ​​the hull, and use underground rails to stack the foundation pipe piles to the pipe pile storage area of ​​the hull by sliding loading. 2) Dock the ship at the wind turbine equipment assembly dock and use a full-rotation crane to lift the wind turbine equipment to the wind turbine equipment storage area on the ship; 3) After the hull reaches the designated construction site, water is injected into the hull to submerge it, so that the bottom of the hull is in a stable state on the seabed mud surface. The jacket foundation is then constructed using a full-rotation crane and a suspended precision control positioning frame. 4) Turn the ship around and install the wind turbine equipment using a full-rotation crane.

[0011] In one alternative approach, step 3) includes the following steps during the construction of the jacket foundation: Using a full-rotation crane, the suspension device is released, allowing the precision control positioning frame to detach from the hull. After measurement and positioning are completed, a vibratory hammer is used to drive the auxiliary piles of the precision control positioning frame into the corresponding soil layer on the seabed. The supporting system of the precision control positioning frame is adjusted to meet the corresponding bearing capacity requirements, and the installation of the precision control positioning frame is completed. With the assistance of a precision control positioning frame, the foundation pipe piles are driven using a hydraulic pile hammer. After the foundation pipe piles are driven, a vibratory hammer is used to pull out the auxiliary piles. Then, the precision control positioning frame is lifted and reconnected to the suspension device to provide space for the installation of the jacket. A full-rotation crane is used to lift the jacket and connect it to the foundation pipe piles to complete the construction of the jacket foundation.

[0012] In an alternative embodiment, step 4) includes the following steps during the installation of the wind turbine equipment: The second embedded area on the stern side is moved to the top area of ​​the completed jacket foundation, so that the center line of symmetry of the second embedded area, the center line of symmetry of the jacket, and the longitudinal center line of the hull are kept in the same straight line. Then, two full-rotation cranes are used to lift the wind turbine equipment together, and the bottom flange of the wind turbine equipment is aligned with the top flange of the jacket by balancing the level and installation angle of the wind turbine equipment, thus completing the installation of the wind turbine equipment.

[0013] The beneficial effects of this application are as follows: The multi-functional integrated construction vessel described in this application can simultaneously handle the transportation of jacket foundations and wind turbine equipment, the construction of jacket foundations, and the installation of wind turbines. It boasts strong comprehensive performance. After docking, the vessel can load foundation components and wind turbine equipment onto the ship using a fully rotating crane on its hull, eliminating the need for additional lifting equipment, thus improving loading efficiency and reducing loading costs. Once it reaches the pre-set installation location for the wind turbine equipment, it can independently complete the installation process, reducing the need for transport vessels and tugboats, and minimizing the need for berthing and other procedures between the construction vessel and transport vessels, thereby improving construction efficiency and reducing project costs. Therefore, this multi-functional integrated construction vessel can independently and efficiently transport and install wind turbine equipment in deep-sea areas, and is highly adaptable to construction windows under adverse sea conditions.

[0014] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of the multi-functional integral construction vessel provided in this application in a specific embodiment; Figure 2 for Figure 1 A process diagram of the installation of jacket foundation on a multi-functional integrated construction vessel. Figure 3 for Figure 1 A diagram illustrating the loading process of wind turbine equipment onto a multi-functional integrated construction vessel. Figure 4 for Figure 1 Construction process diagram of pile driving using a multi-functional integrated construction vessel; Figure 5 for Figure 1 Process diagram of wind turbine equipment installation using a multi-functional integrated construction vessel; Figure 6 for Figure 1 Diagram of the ballast jacking operation procedure for the multi-functional integrated construction vessel.

[0016] Reference numerals: hull 1, bow 11, stern 12, first embedded area 13, second embedded area 14, upper shell 15, lower shell 16, support truss 2, full-rotation crane 3, lifting device 31, jacket frame 4, foundation pipe pile 5, wind turbine equipment 6, suspension device 7, precision control positioning frame 8, anchor cable 9, auxiliary pile 10.

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0018] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0019] It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. All other technical solutions obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0022] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0023] like Figure 1-6 As shown, the first aspect of this application provides a multi-functional integrated construction vessel, which mainly includes a hull 1. The hull 1 has a deck layer, a bow 11, and a stern 12. The deck layer is located on the top side of the hull 1, and the bow 11 and stern 12 are located on both sides of the hull 1 along its length. A support truss 2 is provided on the deck layer, and at least two full-rotation cranes 3 are provided on the top side of the support truss. When rotating, the full-rotation cranes 3 can cover the bow 11 and the stern 12. A first embedded area 13 is provided on the side of the hull 1 facing the bow 11. The first embedded area 13 is configured as a piling operation area, and the first embedded area 13 is provided with a suspended precision control positioning frame facility. A second embedded area 14 is provided on the side of the hull 1 facing the stern 12. The second embedded area 14 is configured as a wind turbine equipment 6 installation operation area. Generally, two full-rotation cranes 3 are sufficient. The two full-rotation cranes 3 have the same lifting capacity and are arranged in the middle of the hull 1. They can work independently or in concert, which increases the flexibility in the selection of lifting procedures and improves the efficiency of offshore construction.

[0024] The multi-functional integrated construction vessel in this embodiment can simultaneously handle the transportation of the jacket foundation and the wind turbine equipment 6, the construction of the jacket foundation, and the installation of the wind turbine. It has strong comprehensive performance. After the hull 1 docks, the foundation components and wind turbine equipment 6 can be loaded onto the ship using the full-rotation crane 3 on the hull 1 without the need for additional lifting equipment, which improves loading efficiency and reduces loading costs. After reaching the preset installation position of the wind turbine equipment 6, it can independently complete the installation process, reducing the use of supporting vessels such as transport ships and tugboats, and reducing the need for berthing and other procedures between the construction vessel and the transport ship, thus improving construction efficiency and reducing project costs. It can be seen that this multi-functional integrated construction vessel can independently and efficiently transport and install the wind turbine equipment 6 in deep sea areas, and is highly adaptable to construction windows under harsh sea conditions.

[0025] More specifically, the core advantage of this multi-functional integrated construction vessel lies in its self-sufficient operational capability. During the dockside loading phase, it utilizes its own cranes, avoiding the high costs and scheduling difficulties associated with renting large shore cranes or floating cranes. This capability is particularly crucial for remote wind power-specific docks lacking heavy lifting equipment. At deep-sea construction sites, its "one-stop" operation mode eliminates the need for coordinated operations of at least one heavy transport vessel and one large crane vessel (or jack-up platform). This minimizes high-risk and time-consuming aspects such as dynamic positioning between vessels and berthing in complex sea conditions, significantly reducing overall vessel and machinery scheduling costs and fuel consumption. From an engineering management perspective, it integrates multiple vessels and contracting interfaces into a single interface, simplifying construction organization, reducing the risk of delays due to miscoordination among multiple vessels, and significantly enhancing the overall project controllability.

[0026] like Figure 1-6 As shown, in one specific embodiment, the hull 1 includes an upper hull 15 and a lower hull 16. The upper hull 15 is fixedly disposed on the top side of the lower hull 16. The lower hull 16 includes at least two first hulls, which are spaced apart and support the upper hull 15. A jacket storage area is provided on the side of the first hull facing the bow 11 for storing jackets 4. The area between the at least two first hulls is configured as a pipe pile storage area for stacking foundation pipe piles 5. A wind turbine equipment storage area is configured on the side of the first hull facing the stern 12 for storing wind turbine equipment 6. Specifically, the foundation pipe piles 5 stacked in the pipe pile storage area can be arranged in a transverse double-layer configuration between the two first hulls. The jackets 4 in the jacket storage area can be arranged with vertical outriggers on top of the first hulls and secured with sea lashing. On the other side of the first hull, the wind turbine equipment 6 stored in the wind turbine equipment storage area is secured with sea lashing in a vertical configuration.

[0027] like Figure 1-6 As shown, in one specific embodiment, the upper shell 15 includes multiple second shells, which are interconnected and disposed on one side of the top of the first shell. A deck layer is disposed on the second shells, and the deck layer adopts a double-sided center-embedded open structure. A first embedded area 13 is disposed on the side of the second shell facing the bow 11, and a second embedded area 14 is disposed on the side of the second shell facing the stern 12. In this embodiment, the double-sided center-embedded open structure of the deck layer of the upper shell 15 allows for piling and jacket frame 4 installation operations to be carried out using a ship center-lifting method. The location of the ship's center intersection area is minimally affected by ship swaying, thus meeting the adaptability requirements of foundation construction operations to harsh sea conditions.

[0028] The "dual-sided center-embedded opening" structure (i.e., the first embedded area 13 and the second embedded area 14 of the upper hull 15) is a key design feature of this multi-functional integral construction vessel, enabling it to adapt to high-precision construction. The rotational motion of the hull 1 in waves occurs around its center of gravity and epicenter, while the linear velocity change is minimal in the area near the longitudinal centerline of the hull 1. By placing the critical lifting paths (i.e., the opening areas) for piling and wind turbine installation here, the horizontal sway of the lifted object relative to the target installation point is minimized during lifting and lowering. This provides a natural dynamic stability benchmark for verticality control of piling and high-precision alignment of wind turbine flanges, thereby reducing extreme dependence on wave-compensated crane systems and allowing for longer effective working time under the same sea conditions.

[0029] In one specific embodiment, the first hull and the second hull are respectively provided with inlet and outlet ports, through which water can be filled and drained to allow the hull 1 to submerge and surface. In this embodiment, the hull 1 is divided into upper and lower layers. The upper layer uses four second hulls, which can be hollow cylindrical structures. The lower layer uses two spaced-apart first hulls. The first and second hulls are respectively provided with inlet and outlet ports, which can be independently or jointly controlled to allow the hull 1 to submerge and surface, and to submerge and surface. This improves the speed and flexibility of the hull 1's submersion and surface operations, reduces the time required for the vessel to be stationed and stabilized, and improves the efficiency of construction operations.

[0030] Before construction, rapid flooding of the lower hull 16 (the first hull) allows the vessel to submerge as a whole, stabilizing its hull on or near the seabed. This increases the anti-slip and anti-capsulation stability of hull 1, providing a near-fixed platform for heavy piling and hoisting operations. This process is much faster than traditional anchoring. During construction, the ballast of each second hull can be adjusted to compensate for the heeling or trimming of hull 1 caused by the movement of crane loads, ensuring the working deck remains in optimal level condition at all times. After construction, sectional drainage allows for rapid resurfacing and restoration of navigation status. This capability enables the vessel to quickly adapt to different working conditions, from navigation and hull-bottom construction to floating adjustments.

[0031] In addition, the suspended precision control positioning frame 8 includes a suspension device 7 and a precision control positioning frame 8; the side wall of the hull 1 is equipped with anchor cables 9 for fixed berthing. Specifically, the precision control positioning frame 8 for controlling the piling accuracy can be connected to the positioning pile by a pin. Its positioning frame system is connected to the side wall of the central opening area (i.e., the first embedded area 13) of the ship's upper hull 15 in a suspended mode, which reduces the number of auxiliary transport ships for configuring the positioning frame system, and also simplifies the process of installing the piling positioning frame system at sea, thus improving construction efficiency.

[0032] The second aspect of this application provides a method for installing wind turbine equipment, which uses the multi-functional integrated construction vessel described in the first aspect embodiment to install wind turbine equipment 6 in deep-sea areas. The method for installing wind turbine equipment 6 includes the following steps: 1) Moor the hull 1 at the foundation manufacturing wharf, connect and fix it to the mooring pier on the wharf by anchor cable 9, and then use the full-rotation crane 3 on the hull 1 to lift the jacket 4 to the jacket storage area of ​​the hull 1. Then, use the buried track to stack the foundation pipe piles 5 to the pipe pile storage area of ​​the hull 1 by sliding loading. 2) Moor the hull 1 at the wind turbine equipment 6 assembly dock, connect and fix it to the mooring pier on the dock with the anchor cable 9, and then use the onboard full-rotation crane 3 to lift the wind turbine equipment 6 to the wind turbine equipment storage area of ​​the hull 1. 3) After the hull 1 reaches the designated construction site, water is injected into the upper hull 15 and lower hull 16 of the hull 1 to submerge it, so that the bottom of the hull 1 reaches the seabed mud surface and the ship is in a stable state. The construction of the jacket foundation is carried out by the full-rotation crane 3 and the suspended precision control positioning frame 8. 4) Turn the ship 1 around and install the wind turbine equipment 6 using the slewing crane 3.

[0033] like Figure 4-6 As shown, in one specific embodiment, step 3) during the construction of the jacket foundation includes the following steps: Using a full-rotation crane 3, the suspension device 7 is released, causing the precision control positioning frame 8 to detach from the hull 1. After completing the measurement and positioning, a vibratory hammer is used to drive the auxiliary pile 10 of the precision control positioning frame 8 into the corresponding soil layer on the seabed. The matching system of the precision control positioning frame 8 is adjusted to meet the corresponding bearing capacity requirements, and the installation of the precision control positioning frame 8 is completed. With the assistance of the precision control positioning frame 8, the foundation pipe piles 5 are driven by a hydraulic pile hammer. After the foundation pipe piles 5 are driven, the auxiliary piles 10 are pulled out by a vibratory hammer. Then, the precision control positioning frame 8 is lifted and reconnected with the suspension device 7 to provide space for the installation of the jacket frame 4. The jacket frame 4 is lifted by a full-rotation crane 3 and connected to the foundation pipe piles 5 to complete the construction of the jacket foundation.

[0034] Step 4) The installation of the fan equipment 6 includes the following steps: Move the second embedded area 14 on one side of the stern 12 to the top area of ​​the completed jacket foundation, so that the center line of symmetry of the shape of the second embedded area 14, the center line of symmetry of the shape of the jacket 4, and the longitudinal center line of the hull 1 are kept in the same straight line. Then, using two full-rotation cranes 3 to lift together, the horizontality and installation angle of the wind turbine equipment 6 are balanced by the lifting device 31, and the bottom flange of the wind turbine equipment 6 is aligned and connected with the top flange of the jacket 4 to complete the installation of the wind turbine equipment 6.

[0035] In summary, it can be seen that the multi-functional integrated construction vessel and the wind turbine equipment installation method using the multi-functional integrated construction vessel can better adapt to the harsh and complex sea conditions in deep-sea areas, meet the construction of ultra-long jacket foundations and the large-scale installation of offshore wind turbine units, ensure high performance and efficiency of offshore transportation and construction operations, and have strong overall integrity, providing a feasible solution for the development of offshore wind power in deep-sea areas.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-functional integral construction vessel, characterized in that, The vessel includes a hull, which has a deck layer, a bow, and a stern. The deck layer is located on the top side of the hull, and the bow and stern are located on opposite sides of the hull along its length. A support truss is provided on the deck layer, and at least two slewing cranes are provided on the top side of the support truss. The slewing cranes can cover the bow and stern when rotating. A first embedded area is provided on the side of the hull facing the bow. The first embedded area is configured as a piling operation area and is equipped with a suspended precision control and positioning frame. A second embedded area is provided on the side of the hull facing the stern. The second embedded area is configured as a wind turbine equipment installation operation area.

2. The multi-functional integral construction vessel according to claim 1, characterized in that, The hull includes an upper hull and a lower hull. The upper hull is fixedly disposed on the top side of the lower hull. The lower hull includes at least two first hulls. The at least two first hulls are arranged at intervals and support the upper hull. The first hulls have a jacket storage area on the side facing the bow for storing jackets. The area between the at least two first hulls is configured as a pipe pile storage area for stacking foundation pipe piles. The first hulls have a wind turbine equipment storage area on the side facing the stern for storing wind turbine equipment.

3. The multi-functional integral construction vessel according to claim 2, characterized in that, The upper shell includes a plurality of second shells, which are interconnected and disposed on the top side of the first shell. The deck layer is disposed on the second shell and adopts a double-sided center-embedded opening structure. The first embedded area is disposed on the side of the second shell facing the bow, and the second embedded area is disposed on the side of the second shell facing the stern.

4. The multi-functional integral construction vessel according to claim 3, characterized in that, The first hull and the second hull are respectively provided with inlet and outlet ports, through which water can be filled and drained into the first hull and the second hull respectively, so as to submerge and surface the hull.

5. The multi-functional integral construction vessel according to any one of claims 1-4, characterized in that, The suspended precision control and positioning frame facility includes a suspension device and a precision control and positioning frame; the sidewalls of the hull are equipped with anchor cables for fixed berthing.

6. A method for installing a fan equipment, characterized in that, The multi-functional integrated construction vessel according to any one of claims 1-5 is used to install wind turbine equipment in deep-sea areas. The wind turbine equipment installation method includes the following steps: 1) Dock the hull at the foundation manufacturing wharf, use a full-rotation crane to lift the jacket to the jacket storage area of ​​the hull, and use underground rails to stack the foundation pipe piles to the pipe pile storage area of ​​the hull by sliding loading. 2) Dock the ship at the wind turbine equipment assembly dock and use a full-rotation crane to lift the wind turbine equipment to the wind turbine equipment storage area on the ship; 3) After the hull reaches the designated construction site, water is injected into the hull to submerge it, so that the bottom of the hull is in a stable state on the seabed mud surface. The jacket foundation is then constructed using a full-rotation crane and a suspended precision control positioning frame. 4) Turn the ship around and install the wind turbine equipment using a full-rotation crane.

7. The fan equipment installation method according to claim 6, characterized in that, Step 3) specifically includes the following steps during the construction of the jacket foundation: Using a full-rotation crane, the suspension device is released, allowing the precision control positioning frame to detach from the hull. After measurement and positioning are completed, a vibratory hammer is used to drive the auxiliary piles of the precision control positioning frame into the corresponding soil layer on the seabed. The supporting system of the precision control positioning frame is adjusted to meet the corresponding bearing capacity requirements, and the installation of the precision control positioning frame is completed. With the assistance of a precision control positioning frame, the foundation pipe piles are driven using a hydraulic pile hammer. After the foundation pipe piles are driven, a vibratory hammer is used to pull out the auxiliary piles. Then, the precision control positioning frame is lifted and reconnected to the suspension device to provide space for the installation of the jacket. A full-rotation crane is used to lift the jacket and connect it to the foundation pipe piles to complete the construction of the jacket foundation.

8. The fan equipment installation method according to claim 7, characterized in that, Step 4) includes the following steps during the installation of the wind turbine equipment: The second embedded area on the stern side is moved to the top area of ​​the completed jacket foundation, so that the center line of symmetry of the second embedded area, the center line of symmetry of the jacket, and the longitudinal center line of the hull are kept in the same straight line. Then, two full-rotation cranes are used to lift the wind turbine equipment together, and the bottom flange of the wind turbine equipment is aligned with the top flange of the jacket by balancing the level and installation angle of the wind turbine equipment, thus completing the installation of the wind turbine equipment.

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