Offshore wind power double-ship floating installation device and method

Abstract

The present application relates to a kind of offshore wind power double-ship floating installation device and method, device includes: barge;Fan carrier, including transverse deck support frame and vertical wind turbine carrying truss, two vertical wind turbine carrying truss are connected with corresponding transverse deck support frame, two transverse deck support frames are connected by bottom connecting frame, the upper end of two vertical wind turbine carrying truss is connected by top connecting frame, two transverse deck support frames are respectively set on the front and tail of two barges;Wind turbine tower, is inserted in vertical wind turbine carrying truss, and the bottom of wind turbine tower is provided with first conical sheath;Butt cantilever beam assembly, two groups of butt cantilever beam assembly are respectively set in two transverse deck support frames;Pile foundation, be set below the first conical sheath, and second conical sheath is pre-set on pile foundation;Claw connector, be arranged between first conical sheath and pile foundation, for connecting the two together.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power installation technology, specifically to an offshore wind power dual-ship floating transport and installation device and method. Background Technology

[0002] Currently, offshore wind turbine installation commonly employs hoisting methods, including segmented hoisting and integral hoisting. The segmented hoisting method divides the turbine into 4 to 5 modular units, transports these units to a designated sea area using large vessels, and then uses a large crane vessel to lift and assemble each unit sequentially at sea. Due to the numerous interfaces and complex connections, this installation method results in excessively long offshore operation times and low installation efficiency. Constrained by factors such as turbine weight and size, crane vessel lifting capacity, available vessel resources, and operational weather windows, the segmented hoisting method significantly increases the overall installation cost for offshore wind farms. The integral hoisting method involves assembling and commissioning the turbine at the dock, then transporting the assembled turbine to the offshore installation location using a transport vessel, and finally placing the turbine onto the pile foundation using a large crane vessel. However, due to the increasing size and height of offshore wind turbines, the lifting height of crane vessels is often insufficient to complete the installation, hindering the implementation of this method. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a dual-ship floating installation device and method for offshore wind power, which can significantly shorten offshore operation time, provide a longer offshore operation window throughout the year, and eliminate the need for floating cranes or platform cranes during the installation process, thus demonstrating higher overall efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The offshore wind power dual-vessel floating installation device of the present invention includes: a barge; a wind turbine carrier frame, including two horizontal deck support frames at the bottom and two vertical wind turbine bearing trusses at the top, the two vertical wind turbine bearing trusses being connected to the corresponding horizontal deck support frames, the two horizontal deck support frames being connected by a bottom connecting frame, the upper ends of the two vertical wind turbine bearing trusses being connected by a top connecting frame, the two horizontal deck support frames being erected at the front and stern of the two barges respectively; a wind turbine tower, inserted into the vertical wind turbine bearing trusses, the bottom of the wind turbine tower being provided with a first conical protective sleeve; and docking. The cantilever beam assembly comprises two sets of docking cantilever beam assemblies, each set consisting of two opposing cantilever beams. The opposing ends of the two cantilever beams each have a semi-circular notch, so that when the two cantilever beams dock, the two semi-circular notches form a circular hole. This circular hole is used to accommodate a wind turbine tower with a first conical sheath. A pile foundation is located below the first conical sheath, and a second conical sheath is pre-installed on the pile foundation. A claw connector is located between the first conical sheath and the pile foundation to connect the two together.

[0006] Preferably, in the aforementioned offshore wind power dual-boat floating installation device, the two docking cantilever beams in each group are driven by hydraulic cylinders to move in opposite directions to achieve docking.

[0007] Preferably, the offshore wind power dual-ship floating installation device includes a claw connector comprising a female connector and a male connector; the female connector is disposed within the first conical sheath and protrudes from the lower part of the first conical sheath; the male connector is disposed at the pre-connection end of the pile foundation, and after the wind turbine sleeve with the first conical sheath is transported to the position, the female connector is connected to the male connector.

[0008] Preferably, in the offshore wind power dual-boat floating installation device, the outer wall of the female connector is provided with a trapezoidal insert; the inner wall of the semi-circular notch of the docking cantilever beam is provided with a first trapezoidal groove, which cooperates with the trapezoidal insert to limit movement when the two docking cantilever beams dock and carry the wind turbine tower with the first conical sheath; the inner wall of the second conical sheath is provided with a second trapezoidal groove, which cooperates with the trapezoidal insert to guide and limit movement after the two docking cantilever beams have transported the wind turbine tower with the first conical sheath into place, the male and female connectors are connected, and the docking cantilever beams are removed.

[0009] The installation method of the offshore wind power dual-ship floating installation device of the present invention includes the following steps:

[0010] During the transport phase, two pairs of cantilever beams placed at the bottom of the transport frame extend along the slide rails by hydraulic drive, and after docking, they support the wind turbine tower. The two cantilever beams are bolted to the first conical sleeve at the bottom of the wind turbine tower to form a whole. The wind turbine is constrained by the wind turbine transport frame. The wind turbine transport frame of the two ships forms a whole. The two wind turbine towers and the two wind turbine transport frames are integrated through the transverse deck support frame and then slid from the dock onto the two ships.

[0011] During the installation phase, the male connectors of the second conical sleeve and the claw connectors are pre-installed on the pile foundation for the installation of the wind turbine tower. By adding ballast water to lower the vessel, the male connector of the claw connector on the pile foundation is connected to the female connector of the claw connector through the hole in the middle of the cantilever beam, and locked with the female connector of the claw connector inside the second conical sleeve at the bottom of the wind turbine tower. The vessel continues to be lowered, gradually transferring the load of the wind turbine tower to the pile foundation. The connecting bolts between the first conical sleeve at the bottom of the wind turbine tower and the connecting cantilever beam are removed, and the cantilever beam is unfolded. At this time, under the constraint of the claw connectors, the wind turbine tower can stand temporarily stably on the pile foundation. Then, the second conical sleeve on the pile foundation is lifted up. The second conical sleeve on the pile foundation and the first conical sleeve at the bottom of the wind turbine tower are fitted together and connected by bolts. Finally, the first conical sleeve and the second conical sleeve on the pile foundation are welded together.

[0012] Preferably, during the transport phase, the stability of the wind turbine tower is increased by the cooperation of the trapezoidal insert and the first trapezoidal groove.

[0013] Preferably, in the installation method described above, after the wind turbine load conversion is completed during the installation phase, the second conical sheath is guided and limited by the cooperation of the trapezoidal insert and the second trapezoidal groove.

[0014] The present invention has the following advantages due to the adoption of the above technical solutions:

[0015] This invention utilizes a dual-vessel integrated transport and floating installation technology for large-scale offshore wind power projects, employing conventional vessel resources. The installation process does not require the assistance of floating cranes or platform cranes, significantly shortening the offshore operation time, providing a longer offshore operation window, and substantially reducing the installation cost of offshore wind power. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. In the drawings:

[0017] Figure 1 This is an overall layout diagram of the dual-ship transport wind turbine of the present invention;

[0018] Figure 2 This is a detailed drawing of the wind turbine tower supported by the cantilever beam docking during the transportation phase of the present invention;

[0019] Figure 3 This is a schematic diagram of the wind turbine tower before installation during ballast unloading of the ship according to the present invention;

[0020] Figure 4 This is a schematic diagram of the wind turbine tower after installation during ballast unloading of the ship according to the present invention;

[0021] Figure 5 This is a schematic diagram from the first angle illustrating the transfer of wind turbine load from the cantilever beam to the pile foundation according to the present invention;

[0022] Figure 6 This is a second-angle schematic diagram illustrating the transfer of wind turbine load from the cantilever beam to the pile foundation according to the present invention.

[0023] The markings in the attached diagram are as follows:

[0024] 1-Barge; 2-Wind turbine carrier frame; 201-Transverse deck support frame; 202-Vertical wind turbine load-bearing truss; 3-Wind turbine tower; 4-First conical sheath; 5-Connecting cantilever beam assembly; 501-Connecting cantilever beam; 502-Semi-circular notch; 6-Pile foundation; 7-Second conical sheath; 8-Claw connector; 801-Female connector; 802-Male connector; 9-Connector; 10-Trapezoidal insert; 11-Second trapezoidal groove. Detailed Implementation

[0025] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0026] This invention provides a dual-vessel floating installation device and method for offshore wind power. By using the technology of overall transportation and overall floating installation of large-scale wind power vessels in deep-sea areas, and applying conventional vessel resources, it significantly shortens the offshore operation time and provides a longer offshore operation window. Moreover, the installation process does not require the assistance of floating cranes or platform cranes, which greatly reduces the installation cost of offshore wind power. It also has ideal compatibility with different types of wind power floating bodies, demonstrating higher overall efficiency.

[0027] like Figures 1 to 6As shown, the offshore wind power dual-ship floating installation device of the present invention includes: a barge 1; a wind turbine carrier frame 2, including two horizontal deck support frames 201 at the bottom and two vertical wind turbine bearing trusses 202 at the top; the two vertical wind turbine bearing trusses 202 are connected to the corresponding horizontal deck support frames 201; the two horizontal deck support frames 201 are connected by a bottom connecting frame; the upper ends of the two vertical wind turbine bearing trusses 202 are connected by a top connecting frame; the two horizontal deck support frames 201 are respectively erected at the front and stern of the two barges 1; and a wind turbine tower 3, inserted into the vertical wind turbine bearing trusses 202; the bottom of the wind turbine tower 3 is provided with a first conical guard. Set 4; docking cantilever beam assembly 5, two sets of docking cantilever beam assemblies 5 are respectively set in two transverse deck support frames 201; each set of docking cantilever beam assembly 5 includes two docking cantilever beams 501 arranged opposite each other, and the opposite ends of the two docking cantilever beams are respectively provided with semi-circular notches 502, so that when the two docking cantilever beams are docked, the two semi-circular notches 502 form an integral circular hole, and the circular hole is used to accommodate the wind turbine tower 3 with the first conical sheath 4; pile foundation 6, set below the first conical sheath 4, and a second conical sheath 7 is pre-set on the pile foundation 6; claw connector 8, set between the first conical sheath 4 and the pile foundation 6, for connecting the two together.

[0028] In the above embodiments, preferably, when the wind turbine tower 3 is connected to the pile foundation 6, the first conical sheath 4, the cantilever beam assembly 5, and the second conical sheath 7 are connected by several connectors 9 (see...). Figure 6 Locking, wherein the connecting part is a bolt.

[0029] In the above embodiments, preferably, the two docking cantilever beams 501 of each group are driven by hydraulic cylinders (not shown in the figure) to move in opposite directions to achieve docking.

[0030] In the above embodiment, preferably, the claw connector 8 includes a female connector 801 and a male connector 802; the female connector 801 is disposed inside the first conical sheath 4 and protrudes from the lower part of the first conical sheath 4; the male connector 802 is disposed at the pre-connection end of the pile foundation 6, and after the wind turbine sleeve 3 with the first conical sheath 4 is transported to the position, the female connector 801 and the male connector 802 are connected.

[0031] In the above embodiment, preferably, the outer wall of the female connector 801 is provided with a trapezoidal insert 10; the inner wall of the semi-circular notch of the cantilever beam is provided with a first trapezoidal groove (not shown in the figure). When the two cantilever beams 501 are connected and carry the wind turbine tower 3 with the first conical sheath 4, the first trapezoidal groove and the trapezoidal insert 10 cooperate to limit the movement.

[0032] The inner wall of the second conical sheath 7 is provided with a second trapezoidal groove 11. After the two docking cantilever beams 501 transport the wind turbine tower 3 with the first conical sheath 4 into place, the male connector 802 and the female connector 801 are connected, and the docking cantilever beams 501 are removed, the second trapezoidal groove 11 cooperates with the trapezoidal insert 10 to guide and limit the movement.

[0033] The installation method of the offshore wind power dual-vessel floating installation device provided by the present invention includes the following steps:

[0034] (1) During the transport phase, two pairs of cantilever beams placed at the bottom of the transport frame extend along the slide rails by hydraulic drive and are connected to support the wind turbine tower. The two cantilever beams are bolted to the first conical sleeve at the bottom of the wind turbine tower to form a whole. The wind turbine is constrained by the wind turbine transport frame. The wind turbine transport frame of the two ships forms a whole. The two wind turbine towers and the two wind turbine transport frames are integrated through the transverse deck support frame and then slid from the dock to the two ships.

[0035] (2) During the installation phase, the male connector of the second conical sleeve and the claw connector are arranged in advance on the pile foundation for installing the wind turbine tower. By adding ballast water to lower the boat, the male connector of the claw connector on the pile foundation is connected to the female connector of the claw connector through the hole in the middle of the cantilever beam, and locked with the female connector of the claw connector in the second conical sleeve at the bottom of the wind turbine tower. Continue to lower the boat to gradually transfer the load of the wind turbine tower to the pile foundation. Remove the connecting bolts between the first conical sleeve 4 at the bottom of the wind turbine tower 3 and the cantilever beam 501, and unfold the cantilever beam. At this time, under the constraint of the claw connector, the wind turbine tower 3 can stand stably on the pile foundation temporarily. Then, lift the second conical sleeve 7 on the pile foundation. The second conical sleeve 7 on the pile foundation and the first conical sleeve 4 at the bottom of the wind turbine tower 3 are connected by bolts. Finally, weld the first conical sleeve 4 to the second conical sleeve 7 of the pile foundation.

[0036] In the above embodiments, preferably, during the transportation phase, the stability of the wind turbine tower is increased by the cooperation of the trapezoidal insert 10 and the first trapezoidal groove.

[0037] In the above embodiments, preferably, during the installation phase, after the wind turbine load conversion is completed, the second conical sheath 7 is guided and limited by the cooperation of the trapezoidal insert 10 and the second trapezoidal groove 11.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions 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. An installation method for a dual-vessel floating installation device for offshore wind power, based on a dual-vessel floating installation device for offshore wind power, the dual-vessel floating installation device for offshore wind power comprising: barge; The wind turbine carrier frame includes two horizontal deck support frames at the bottom and two vertical wind turbine bearing trusses at the top. The two vertical wind turbine bearing trusses are connected to the corresponding horizontal deck support frames. The two horizontal deck support frames are connected by a bottom connecting frame. The upper ends of the two vertical wind turbine bearing trusses are connected by a top connecting frame. The two horizontal deck support frames are respectively erected at the front and stern of the two barges. The wind turbine tower is inserted into the vertical wind turbine bearing truss, and a first conical sheath is provided at the bottom of the wind turbine tower. The cantilever beam assembly consists of two sets of cantilever beam assemblies, each set of which is installed within two transverse deck support frames. Each set of cantilever beam assemblies includes two oppositely arranged cantilever beams, with semi-circular notches at their opposite ends. When the two cantilever beams are joined, the two semi-circular notches form an integral circular hole, which is used to accommodate the wind turbine tower with a first conical sheath. A pile foundation is provided below the first conical sheath, and a second conical sheath is pre-installed on the pile foundation; A claw connector is disposed between the first conical sheath and the pile foundation for connecting the two together; The claw connector includes a female connector and a male connector; the female connector is disposed inside the first conical sheath and protrudes from the lower part of the first conical sheath; the male connector is disposed at the pre-connection end of the pile foundation, and after the wind turbine sleeve with the first conical sheath is transported to the position, the female connector is connected to the male connector. The installation method of the offshore wind power dual-ship floating installation device is characterized by the following steps: During the transport phase, two pairs of cantilever beams placed at the bottom of the transport frame extend along the slide rails by hydraulic drive, and after docking, they support the wind turbine tower. The two cantilever beams are bolted to the first conical sleeve at the bottom of the wind turbine tower to form a whole. The wind turbine is constrained by the wind turbine transport frame. The wind turbine transport frame of the two ships forms a whole. The two wind turbine towers and the two wind turbine transport frames are integrated through the transverse deck support frame and then slid from the dock onto the two ships. During the installation phase, the male connectors of the second conical sleeve and the claw connectors are pre-installed on the pile foundation for the installation of the wind turbine tower. By adding ballast water to lower the vessel, the male connector of the claw connector on the pile foundation is connected to the female connector of the claw connector through the hole in the middle of the cantilever beam, and locked with the female connector of the claw connector inside the second conical sleeve at the bottom of the wind turbine tower. The vessel continues to be lowered, gradually transferring the load of the wind turbine tower to the pile foundation. The connecting bolts between the first conical sleeve at the bottom of the wind turbine tower and the connecting cantilever beam are removed, and the cantilever beam is unfolded. At this time, under the constraint of the claw connectors, the wind turbine tower can stand temporarily stably on the pile foundation. Then, the second conical sleeve on the pile foundation is lifted up. The second conical sleeve on the pile foundation and the first conical sleeve at the bottom of the wind turbine tower are fitted together and connected by bolts. Finally, the first conical sleeve and the second conical sleeve on the pile foundation are welded together.

2. The installation method according to claim 1, characterized in that, The two docking cantilever beams in each group are driven by hydraulic cylinders to move in opposite directions to achieve docking.

3. The installation method according to claim 1, characterized in that, The outer wall of the female connector is provided with a trapezoidal insertion block; The inner wall of the semi-circular notch of the connecting cantilever beam is provided with a first trapezoidal groove. When the two connecting cantilever beams are connected and support the wind turbine tower with the first conical sheath, the first trapezoidal groove and the trapezoidal insert cooperate to limit the movement. The inner wall of the second conical sheath is provided with a second trapezoidal groove. After the two docking cantilever beams transport the wind turbine tower with the first conical sheath into place, the male and female connectors are connected, and the docking cantilever beams are removed, the second trapezoidal groove cooperates with the trapezoidal insert to guide and limit the movement.

4. The installation method according to claim 1, characterized in that, During the transport phase, the stability of the wind turbine tower is increased by the cooperation of the trapezoidal insert and the first trapezoidal groove.

5. The installation method according to claim 1, characterized in that, During the installation phase, after the wind turbine load conversion is completed, the second conical sheath is guided and limited by the cooperation of the trapezoidal insert and the second trapezoidal groove.

Images