A multi-set spar type floating wind turbine integrated transportation and installation vessel and construction method

Abstract

The application belongs to the technical field of Spar type floating wind turbine installation features, and is especially a multi-set Spar type floating wind turbine overall transportation and installation integrated ship and construction method, which comprises a traditional wharf, a U-shaped wharf and a double-body installation barge, is suitable for overall transportation and installation of multi-set Spar type floating wind turbines, and the U-shaped wharf is two parallel rectangular overhanging devices built along the outer edge of the traditional wharf, the two overhanging devices are combined with the traditional wharf to be similar to the letter U, and the U-shaped wharf comprises a first wharf 21 and a second wharf 22; compared with the traditional Spar type wind turbine installation, the application can perform overall installation on the land wharf, and the installation process is high in safety degree; the application does not need large hoisting equipment, and can realize simultaneous overall transportation and installation of multiple wind turbines, thereby saving assembly fund cost and time cost; the wind turbine foundation has large gravity, the wind turbine head has small gravity, and adjacent wind turbines are arranged in opposite directions, so that the double-body installation barge is subjected to more uniform force; the application adopts the double-body ship structure, is good in stability, and increases transportation and installation safety.

Description

Technical Field

[0001] This invention belongs to the technical field of Spar type floating wind turbine installation features, specifically involving an integrated vessel for transporting and installing multiple sets of Spar type floating wind turbines and its construction method. Background Technology

[0002] With the goals of "carbon peaking" and "carbon neutrality" being proposed, the application of wind power generation is becoming increasingly widespread. Compared with onshore wind farm construction, offshore wind farm construction faces a more complex and harsher environment. Currently, there are three main types of offshore floating wind turbines: semi-submersible, column-mounted (Spar type), and tension leg (TLP type). Among them, the Spar type floating wind turbine has the characteristics of low center of gravity, high center of buoyancy, and good stability, and is already being used in engineering practice. However, the Spar type floating wind turbine has a deep draft, which restricts port access. It needs to be assembled in deep water, and the installation environment is harsh, challenging, and time-consuming, posing a huge challenge to the installation time window for offshore wind turbines.

[0003] Based on the characteristics of Spar-type floating wind turbines, a method for transporting and installing multiple Spar-type floating wind turbines as a whole is proposed. This technology has significant advantages such as short installation time, simultaneous transportation of multiple wind turbines as a whole, and cost savings in offshore construction. Summary of the Invention

[0004] This invention provides an integrated vessel for transporting and installing multiple sets of Spar-type floating wind turbines and a construction method thereof, which has significant advantages such as short installation time, simultaneous transportation of multiple sets of wind turbines, and cost savings in offshore construction.

[0005] This invention provides the following technical solution: an integrated vessel and construction method for transporting and installing multiple sets of Spar-type floating wind turbines, including a traditional wharf, a U-shaped wharf, and a catamaran installation barge. It is suitable for the integrated transport and installation of multiple sets of Spar-type floating wind turbines. The U-shaped wharf consists of two parallel rectangular extension devices built along the outer edge of a traditional wharf. The two extension devices, combined with the traditional wharf, resemble the letter U. The U-shaped wharf includes a first wharf 21 and a second wharf 22, with the first wharf on one side and the second wharf on the other. Parallel wharf transport tracks are arranged at intervals along the U-shaped wharf. The catamaran installation barge includes a first barge, a second barge, and a wind turbine support frame. The decks of the two barges are connected above the wind turbine support frame. The wind turbine support frame includes a first barge lifting device, a second barge lifting device, and barge transport tracks. The barge transport tracks are connected to the wharf transport tracks via connecting tracks. The catamaran installation barge is equipped with a track power device. Rotation of the track power device causes the barge transport tracks and the wharf transport tracks to move towards the track power device, thereby transporting the entire wind turbine.

[0006] The specific steps for the integrated transport and installation of multiple Spar-type floating wind turbines, along with the construction methods, are as follows:

[0007] Step 1: Assemble the Spar type wind turbine at the U-shaped dock:

[0008] A U-shaped wharf is built on the outer edge of a traditional wharf. The U-shaped wharf consists of two parallel wharves, namely a first wharf and a second wharf. The first wharf and the second wharf are rectangular in shape. Parallel wharf transport tracks are provided on the first wharf and the second wharf respectively. Multiple sets of Spar type wind turbine split structures are transported to the first wharf and the second wharf by land flatbed trucks. The wind turbine foundation structure is placed horizontally in the wharf transport tracks by cranes. The Spar type wind turbine tower, turbine head and blade structure are installed step by step. The final assembled Spar wind turbine is placed horizontally along the wharf track direction, with the blades close to the center of the U-shaped wharf.

[0009] Step Two: Loading the Spar type wind turbine onto the ship as a whole:

[0010] The catamaran installation barge travels to the interior of the U-shaped wharf. The barge's attitude and the wind turbine support frame are adjusted so that the barge track and the corresponding wharf transport track are on the same horizontal plane and in a straight line. A connecting track is installed to connect the wharf transport track and the barge transport track. The track power unit of the catamaran installation barge is activated, causing the wind turbine assembly to slowly move along the transport track to the corresponding position on the barge transport track of the catamaran installation barge. The fixing clamps of the first and second barge lifting devices are opened, fixing the wind turbine assembly onto the wind turbine support frame of the catamaran installation barge. Thus, multiple sets of wind turbines from the first and second wharves can be loaded onto the barge. During loading, the first and second barge lifting devices are adjusted to ensure that the barge transport track and the corresponding wharf transport track are on the same horizontal plane, ensuring that the wind turbine blades are not obstructed.

[0011] Step 3: Wind Turbine Transportation

[0012] After multiple wind turbines are installed on the ship, the connecting rails are removed, and the catamaran installation barge leaves the dock. Under the premise of ensuring safe sea conditions, it sails to the installation position at sea. The first barge lifting device and the second barge lifting device are equipped with spring structures, which have motion compensation functions to prevent the wind turbine support frame from breaking due to excessive force in special situations such as the catamaran installation barge turning.

[0013] Step 4: Offshore wind turbine installation:

[0014] Adjust the lifting device of the barge where the Spar wind turbine blades to be installed are located. The barge track is tilted, the fixing clamps are slowly loosened, the Spar wind turbine is slowly lowered, the Spar wind turbine foundation ballast is adjusted, the Spar wind turbine is straightened and connected to the already deployed seabed anchor cables, the ballast of the catamaran installation barge is adjusted to ensure stability and safety, and the catamaran installation barge sails to the next installation location.

[0015] The beneficial effects of this invention are as follows: Compared with the traditional Spar type wind turbine installation, this invention can be installed as a whole at a land terminal, with a high degree of safety during the installation process; this invention does not require large hoisting equipment and can realize the simultaneous loading and transportation of multiple wind turbines as a whole, saving assembly capital and time costs; the wind turbine foundation has a large weight, while the wind turbine head has a small weight, and adjacent wind turbines are arranged in opposite directions, making the stress on the catamaran installation barge more even; the invention adopts a catamaran structure, which has good stability and increases transportation and installation safety.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall loading process of the Spar type floating wind turbine onto a ship;

[0018] Figure 2 This is a schematic diagram of the transportation process for a Spar type floating wind turbine.

[0019] Figure 3 This is a schematic diagram of the installation process for a Spar type floating wind turbine.

[0020] In the diagram: 1. Traditional wharf; 2. U-shaped wharf; 21. First wharf; 22. Second wharf; 3. Wharf transport rail; 4. Catamaran-mounted barge; 41. First barge; 42. Second barge; 5. Rail power unit; 6. Fan support frame; 61. First barge lifting device; 62. Second barge lifting device; 63. Barge transport rail; 7. Connecting rail; 8. Fan; 81. First fan; 82. Second fan; 83. Third fan; 84. Fourth fan; 9. Fixing clamp. Detailed Implementation

[0021] Please see Figures 1-3The present invention provides the following technical solution: an integrated transport and installation vessel for multiple Spar-type floating wind turbines and a construction method thereof, including a traditional wharf 1, a U-shaped wharf 2, and a catamaran installation barge 4. The U-shaped wharf 2 consists of two parallel rectangular extension devices built on the outer edge of the traditional wharf 1. The two extension devices combined with the traditional wharf 1 form a shape resembling the letter U. The U-shaped wharf 2 includes a first wharf 21 and a second wharf 22. One side of the U-shaped wharf 2 is the first wharf 21, and the other side is the second wharf 22. Parallel wharf transport tracks 3 are arranged at intervals on the U-shaped wharf 2. The catamaran installation barge 4 includes a first barge 41, a second barge 42, and a wind turbine support frame 6. The decks of the two barges are connected above each other by the wind turbine support frame 6. The wind turbine support frame 6 includes a first barge lifting device 61, a second barge lifting device 62, and a barge transport track 63.

[0022] The specific steps for the integrated transport and installation of multiple Spar-type floating wind turbines, along with the construction methods, are as follows:

[0023] Step 1: Assemble four sets of Spar type fans:

[0024] The four Spar wind turbines 8 were transported by flatbed truck to the first dock 21 and the second dock 22. The first wind turbine 81 and the third wind turbine 83 were installed as a whole on the dock transport track 3 of the second dock 22. The second wind turbine 82 and the fourth wind turbine 84 were installed as a whole on the dock transport track 3 of the first dock 21. The wind turbine tower, turbine head and blade structure were installed step by step. The final assembled Spar wind turbine was placed horizontally along the dock track, with all wind turbine blades close to the center of the U-shaped dock.

[0025] Step Two: Loading the wind turbine onto the ship as a whole:

[0026] The catamaran barge 4 travels to the interior of the U-shaped wharf, adjusts the attitude of the catamaran barge 4 and the wind turbine support frame 6 so that the barge transport track 63 and the corresponding wharf transport track 3 are on the same horizontal plane and in the same straight line, installs the connecting track 7 to connect the wharf transport track 3 and the barge transport track 63, starts the track power device 5 of the catamaran barge 4, and slowly moves the four wind turbines 8 along the transport track to the corresponding positions of the barge transport track 63 of the catamaran barge 4, opens the fixing clamps 9 of the first barge lifting device 61 and the second barge lifting device 62, and fixes the four wind turbines 8 as a whole on the wind turbine support frame 6 of the catamaran barge 4;

[0027] Step 3: Wind Turbine Transportation

[0028] After the wind turbine 8 is loaded onto the ship, the catamaran installation barge 4 leaves the dock and, under the premise of ensuring safe sea conditions, sails to the sea installation position. The first barge lifting device 61 and the second barge lifting device 62 are equipped with spring structures, which have motion compensation functions to prevent the wind turbine support frame 6 from breaking due to excessive force in special situations such as the catamaran installation barge 4 turning.

[0029] Step 4: Offshore wind turbine installation:

[0030] The catamaran barge 4 travels to the sea area where the first wind turbine 81 is installed, raises the first barge lifting device 61 of the first barge 41 corresponding to the first wind turbine 81, tilts the corresponding barge transport track 63, slowly loosens the fixing clamp 9, slowly lowers the first wind turbine 81, adjusts the foundation ballast of the first wind turbine 81, straightens the first wind turbine 81, and connects it with the already deployed seabed anchor cable, adjusts the ballast of the catamaran barge 4 to ensure stability and safety, and then the catamaran barge 4 travels to the sea area where the fourth wind turbine 84 is installed.

[0031] The catamaran installation barge 4 reaches the installation area of ​​the fourth wind turbine 84, raises the second barge lifting device 62 of the second barge 42 corresponding to the fourth wind turbine 84, tilts the corresponding barge transport track 63, slowly loosens the fixing clamp 9, slowly lowers the fourth wind turbine 84, adjusts the foundation ballast of the fourth wind turbine 84, straightens the fourth wind turbine 84, and connects it with the already deployed seabed anchor cable. The ballast of the catamaran installation barge 4 is adjusted to ensure stability and safety, and the catamaran installation barge 4 sails to the installation area of ​​the second wind turbine 82.

[0032] Continue installing the second fan 82 and the third fan 83 according to the above method.

[0033] The installation sequence of the fans is as follows: first fan 81, second fan 82, third fan 83, and fourth fan 84.

[0034] The embodiments described above are merely illustrative of the implementation methods of the present invention and are not intended to limit the scope of the present invention. It should be noted that those skilled in the art can make modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A construction method for an integrated transport and installation vessel for multiple sets of Spar-type floating wind turbines, characterized in that: The project involves a traditional wharf (1), a U-shaped wharf (2), and a catamaran-mounted barge (4). The U-shaped wharf (2) consists of two parallel rectangular extension devices built on the outer edge of the traditional wharf (1). The two extension devices combined with the traditional wharf (1) resemble the letter U. The U-shaped wharf (2) includes a first wharf (21) and a second wharf (22). One side of the U-shaped wharf (2) is the first wharf (21), and the other side is the second wharf (22). The U-shaped wharf (2) is equipped with parallel wharf transport tracks (3) at intervals. The catamaran-mounted barge (4) includes a first barge (41), a second barge (42), and a wind turbine support frame (6). The decks of the two barges are connected above each other by the wind turbine support frame (6). The wind turbine support frame (6) includes a first barge lifting device (61), a second barge lifting device (62), and a barge transport track (63). The overall assembly steps of the Spar type floating wind turbine are as follows: Multiple sets of Spar type floating wind turbine (8) split structures were transported to the first wharf (21) and the second wharf (22) by land flatbed truck. The Spar type floating wind turbine foundation structure was placed horizontally in the wharf transport track (3) by crane. The Spar type floating wind turbine tower, turbine head and blade structure were installed step by step. Finally, the assembled Spar type floating wind turbine (8) was placed horizontally along the wharf transport track (3) with the blades close to the center of the U-shaped wharf (2).

2. The specific steps of the construction method for an integrated transport and installation vessel for multiple sets of Spar-type floating wind turbines according to claim 1 are as follows: Step 1: Loading the wind turbine onto the ship as a whole: The catamaran barge (4) travels to the interior of the U-shaped wharf (2), adjusts the attitude of the catamaran barge (4) and the wind turbine support frame (6) so that the barge transport track (63) and the corresponding wharf transport track (3) are on the same horizontal plane and in the same straight line, installs the connecting track (7) to connect the wharf transport track (3) and the barge transport track (63), starts the track power device (5) of the catamaran barge (4) so ​​that the Spar type floating wind turbine (8) moves slowly along the barge transport track (63) to the corresponding position of the barge transport track (63) of the catamaran barge (4), opens the fixing clamps (9) of the first barge lifting device (61) and the second barge lifting device (62) to fix the Spar type floating wind turbine (8) on the wind turbine support frame (6) of the catamaran barge (4). After the Spar type floating wind turbine (8) is installed, remove the connecting track (7). The dock transport track (3) has different heights. During the loading process, the first barge lifting device (61) and the second barge lifting device (62) are adjusted so that they are on the same horizontal plane as the corresponding dock transport track (3). During the loading process, the wind turbine blades are not obstructed, and multiple sets of Spar floating wind turbines can be loaded onto the ship at the same time. Step Two: Wind Turbine Transportation After the Spar type floating wind turbine (8) is loaded onto the ship, the catamaran installation barge (4) leaves the dock and sails to the sea installation position under the premise of ensuring safe sea conditions. The first barge lifting device (61) and the second barge lifting device (62) are equipped with spring structures and have motion compensation functions to prevent the wind turbine support frame (6) from breaking due to excessive force when the catamaran installation barge (4) turns. Step 3: Offshore wind turbine installation: Raise the lifting device of the barge where the Spar type floating wind turbine blades are located, tilt the barge transport track (63), slowly loosen the fixing clamp (9), slowly lower the Spar type floating wind turbine (8), adjust the foundation ballast of the Spar type floating wind turbine (8), straighten the Spar type floating wind turbine (8) and connect it with the already arranged seabed anchor cable, adjust the ballast of the catamaran installation barge (4) to ensure stability and safety, and the catamaran installation barge (4) sails to the next installation location.

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