Positioning method of floating wind turbine

Abstract

The present invention relates to the technical field of floating wind turbine installation methods, and specifically discloses a method for placing a floating wind turbine in position, the method comprising: S1: engineering ship a and engineering ship b respectively arrive at both sides of a fixed position and drop anchor to place the floating wind turbine; S2: a tugboat tows the floating wind turbine to a position S meters away from the fixed position; S3: the tail end of engineering ship a tows pontoon a, and the tail end of engineering ship b tow pontoon b, so that the floating wind turbine is towed to a position s meters away from the fixed position, where S>s; S4: the fore and aft ends of engineering ship a tow pontoon a, and the fore and aft ends of engineering ship b tow pontoon b and pontoon c, thereby moving the floating wind turbine to the fixed position, and making pontoon a, pontoon b, and pontoon c respectively face the corresponding three sets of mooring cables. The method solves the problem that the floating wind turbine drifts freely under the influence of waves, the mooring cable length margin is small, and it is difficult to connect the mooring cables when the floating wind turbine floats.

Description

Technical Field

[0001] The present invention relates to the technical field of floating wind turbine installation methods, and in particular to a floating wind turbine installation method. Background Art

[0002] As the wind power industry develops into deep water, floating wind turbines have begun to be used. Floating wind turbines are mainly fixed to the sea surface by suction anchors and mooring cables. The suction anchors and three sets of mooring cables have been laid in advance, with two adjacent sets of mooring cables set at a 120-degree angle. One end of each of the three mooring cables is fixed to the seabed, and the other ends of each of the three mooring cables point to the fixed position of the floating wind turbine. After the floating wind turbine is towed as a whole to the designed fixed position, the three sets of mooring cables need to be connected to the floating wind turbine. However, before the floating wind turbine is connected to the mooring cable, it is in a free-floating state and drifts freely under the influence of the waves. The mooring cable length margin is not large, making it difficult to connect the mooring cable when the floating wind turbine is floating. Summary of the Invention

[0003] The object of the present invention is to provide a method for placing a floating wind turbine in position, so as to solve the problem in the related art that the floating wind turbine is in a free-floating state before being connected to the mooring cable, drifting freely under the influence of waves, and the mooring cable has a small length margin, making it difficult to connect the mooring cable when the floating wind turbine is floating.

[0004] The present invention provides a method for positioning a floating wind turbine, wherein the floating wind turbine includes three pontoons, wherein two adjacent pontoons are at an angle of 120°, and mooring cables are divided into three groups, wherein two adjacent groups of mooring cables are at an angle of 120°, and one end of each of the three groups of mooring cables is fixed to the seabed, and the other end of each of the three groups of mooring cables points to a fixed position of the floating wind turbine. When the floating wind turbine is in the fixed position, the three groups of mooring cables are fixedly connected to the three pontoons in a one-to-one correspondence, wherein the three pontoons are respectively pontoon a, pontoon b, and pontoon c. The method for positioning the floating wind turbine includes:

[0005] S1: Engineering vessel a and engineering vessel b arrive at both sides of the fixed position and drop anchor in place;

[0006] S2: The tugboat tows the floating wind turbine to a position S meters away from the fixed position;

[0007] S3: The tail end of the engineering ship a pulls the pontoon a, and the tail end of the engineering ship b pulls the pontoon b, so that the floating wind turbine is towed to a position s meters away from the fixed position, S>s;

[0008] S4: The bow and tail ends of the engineering ship a both pull the pontoon a, and the bow and tail ends of the engineering ship b pull the pontoon b and the pontoon c, thereby moving the floating wind turbine to the fixed position, and making the pontoon a, the pontoon b and the pontoon c respectively opposite to the corresponding three groups of mooring cables.

[0009] As a preferred technical solution for the method of placing a floating wind turbine in position, in step S2, three tugboats are provided, and the three tugboats respectively tow the pontoon a, the pontoon b, and the pontoon c.

[0010] As a preferred technical solution for the method of placing a floating wind turbine in position, in step S2, the bows of the three tugboats point in different directions respectively.

[0011] As an optimal technical solution for the method of placing a floating wind turbine in place, in step S3, the tail end of the engineering ship a is connected to the pontoon a via a towing rope a, and the tail end of the engineering ship b is connected to the pontoon b via a towing rope b. When the tugboat interferes with the towing rope a or the towing rope b, the tugboat detaches from the floating wind turbine.

[0012] As a preferred technical solution for the method of placing the floating wind turbine, step S4 includes:

[0013] S41: The head end of the engineering ship a is connected to the pontoon a through a towing rope c, and the head end of the engineering ship b is connected to the pontoon c through a towing rope d. The towing ropes a, b, c and d tow the floating wind turbine to the fixed position.

[0014] As a preferred technical solution for the method of placing the floating wind turbine, step S4 further includes:

[0015] The bow end of the engineering ship a is connected to the pontoon a through a towing rope e, and the tail end of the engineering ship a is connected to the pontoon a through a towing rope f; the bow end of the engineering ship b is connected to the pontoon b through a towing rope g, and the tail end of the engineering ship b is connected to the pontoon c through a towing rope h. By adjusting the towing rope a, the towing rope b, the towing rope c, the towing rope d, the towing rope e, the towing rope f, the towing rope g and the towing rope h, the position of the floating wind turbine is adjusted so that the pontoon a, the pontoon b and the pontoon c are respectively opposite to the corresponding three groups of mooring cables.

[0016] As a preferred technical solution for the method of placing a floating wind turbine in position, before executing step S41 , step S40 is executed: all tugboats are separated from the floating wind turbine.

[0017] As a preferred technical solution for the method of placing a floating wind turbine, in step S1, the four corners of the engineering vessel a are fixed by dropping anchors, and the four corners of the engineering vessel b are fixed by dropping anchors.

[0018] As a preferred technical solution for the method of placing a floating wind turbine in position, in step S2, the value of S is 200.

[0019] As a preferred technical solution for the method of placing a floating wind turbine in position, in step S3, the value of s is 100.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a method for positioning a floating wind turbine. The floating wind turbine includes three pontoons, two adjacent pontoons are at an angle of 120 degrees, and mooring cables are divided into three groups. Two adjacent groups of mooring cables are at an angle of 120 degrees. One end of each of the three groups of mooring cables is fixed on the seabed, and the other end of each of the three groups of mooring cables points to the fixed position of the floating wind turbine. When the floating wind turbine is in the fixed position, the three groups of mooring cables are fixedly connected to the three pontoons in a one-to-one correspondence. The three pontoons are pontoon a, pontoon b, and pontoon c. The method for positioning the floating wind turbine includes: S1: engineering ship a and engineering ship b respectively arrive at the seabed; The floating wind turbine is anchored on both sides of the fixed position; S2: the tugboat tows the floating wind turbine to a position S meters away from the fixed position; S3: the tail end of the engineering ship a tows the pontoon a, and the tail end of the engineering ship b tows the pontoon b, so that the floating wind turbine is towed to a position s meters away from the fixed position, S>s; S4: the bow and tail ends of the engineering ship a both tow the pontoon a, and the bow and tail ends of the engineering ship b tow the pontoon b and the pontoon c, thereby moving the floating wind turbine to the fixed position, and making the pontoons a, b and c respectively opposite to the corresponding three sets of mooring cables. When it is necessary to fix the floating wind turbine with three sets of mooring cables, the floating wind turbine is first towed to a position S meters away from the fixed position by a tugboat; when the tugboat continues to tow the floating wind turbine toward the fixed position, engineering ship a and engineering ship b interfere with the tugboat to continue approaching the fixed position, and then the tail end of engineering ship a tows pontoon a, and the tail end of engineering ship b tows pontoon b, so that the floating wind turbine is towed to a position S meters away from the fixed position. During this process, the tugboat plays a role in repairing the floating wind turbine, so that the moving route of the floating wind turbine is always on the route between engineering ship a and engineering ship b. When moving a distance of s meters from the fixed position, the bow and stern ends of engineering vessel a both pull pontoon a, and the bow and stern ends of engineering vessel b both pull pontoon b and pontoon c. By adjusting the position of pontoon a from the bow and stern ends of engineering vessel a, and adjusting the positions of pontoon b and pontoon c from the bow and stern ends of engineering vessel b, respectively, the floating wind turbine can be positioned in a fixed position with pontoons a, b, and c facing the three sets of mooring cables, respectively. This method can stably fix the floating wind turbine in a fixed position, solving the problem that the floating wind turbine is in a free-floating state before being connected to the mooring cables, drifting freely under the influence of waves, and the mooring cable length margin is small, making it difficult to connect the mooring cables when the floating wind turbine is floating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Flowchart of a method for positioning a floating wind turbine according to an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of step S2 in the method for positioning a floating wind turbine according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of step S3 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 1 ;

[0025] Figure 4 Schematic diagram of step S3 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 2 ;

[0026] Figure 5 Schematic diagram of step S4 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 1 ;

[0027] Figure 6 Schematic diagram of step S4 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 2 ;

[0028] Figure 7 Schematic diagram of step S4 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 3 ;

[0029] Figure 8 for Figure 7 A partial enlarged view of point A in the middle;

[0030] Figure 9 Schematic diagram of step S4 in the method for positioning a floating wind turbine according to an embodiment of the present invention Figure 4 ;

[0031] Figure 10 for Figure 9 A partial enlarged view of point B in the middle.

[0032] In the picture:

[0033] 100, mooring line; 200, floating wind turbine; 201, pontoon a; 202, pontoon b; 203, pontoon c;

[0034] 1. Engineering ship a; 2. Engineering ship b; 3. Tugboat; 4. Towing rope a; 5. Towing rope b; 6. Towing rope c; 7. Towing rope d; 8. Towing rope e; 9. Towing rope f; 10. Towing rope g; 11. Towing rope h. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] like Figures 1 to 10As shown, this embodiment provides a method for positioning a floating wind turbine. The floating wind turbine 200 includes three pontoons, with two adjacent pontoons forming an angle of 120°. The mooring cables 100 are divided into three groups, with two adjacent groups of mooring cables 100 forming an angle of 120°. One end of each of the three groups of mooring cables 100 is fixed to the seabed, and the other ends of each of the three groups of mooring cables 100 point to the fixed position of the floating wind turbine 200. When the floating wind turbine 200 is in the fixed position, the three groups of mooring cables 100 are fixed to the three pontoons in a one-to-one correspondence. The three pontoons are pontoon a201, pontoon b202, and pontoon c203. The method for positioning a floating wind turbine includes: S1: the engineering ship a1 and the engineering ship b2 respectively arrive at the fixed position. Position both sides and drop anchor in place; S2: The tugboat 3 tows the floating wind turbine 200, and it tows the floating wind turbine 200 to a position S meters away from the fixed position; S3: The tail end of the engineering ship a1 tows the pontoon a201, and the tail end of the engineering ship b2 tows the pontoon b202, so that the floating wind turbine 200 is towed to a position s meters away from the fixed position, S>s; S4: The bow and tail ends of the engineering ship a1 both tow the pontoon a201, and the bow and tail ends of the engineering ship b2 tow the pontoon b202 and the pontoon c203, thereby moving the floating wind turbine 200 to the fixed position, and making the pontoons a201, b202 and c203 respectively opposite to the corresponding three sets of mooring cables 100. When it is necessary to fix the floating wind turbine 200 with the three sets of mooring cables 100, the floating wind turbine 200 is first towed to a position S meters away from the fixed position by the tugboat 3; when the tugboat 3 continues to tow the floating wind turbine 200 toward the fixed position, the engineering ships a1 and b2 interfere with the tugboat 3 to continue approaching the fixed position, and then the tail end of the engineering ship a1 tows the pontoon a201, and the tail end of the engineering ship b2 tows the pontoon b202, so that the floating wind turbine 200 is towed to a position S meters away from the fixed position. During this process, the tugboat 3 plays a role in repairing the floating wind turbine 200, so that the moving route of the floating wind turbine 200 is always located on the route between the engineering ships a1 and b2. When moving a distance of s meters from the fixed position, the forward and aft ends of engineering vessel a1 both pull pontoon a201, and the forward and aft ends of engineering vessel b2 both pull pontoon b202 and pontoon c203. By adjusting the position of pontoon a201 from the forward and aft ends of engineering vessel a1, and adjusting the positions of pontoon b202 and pontoon c203 from the forward and aft ends of engineering vessel b2, respectively, the floating wind turbine 200 can be positioned in a fixed position, with pontoons a201, b202, and c203 respectively facing the three sets of mooring lines 100. This method can stably fix the floating wind turbine 200 in a fixed position, solving the problem that the floating wind turbine 200 is in a free-floating state before being connected to the mooring lines 100, drifting freely under the influence of waves, and the mooring lines 100 have a small length margin, making it difficult to connect the mooring lines 100 when the floating wind turbine 200 is floating. Preferably, the value of S is 200 and the value of s is 100.

[0040] Optionally, in step S2, three tugboats 3 are provided, and the three tugboats 3 respectively tow pontoon a201, pontoon b202, and pontoon c203. In this embodiment, the three tugboats 3 are respectively connected to pontoon a201, pontoon b202, and pontoon c203 via towing ropes.

[0041] Optionally, the bows of the three tugboats 3 are pointed in different directions. In this embodiment, the bows of the three tugboats 3 are pointed in different directions, thereby preventing the floating wind turbine 200 from drifting freely under the influence of waves. The three tugboats 3 cooperate to move the floating wind turbine 200 along the route between engineering ship a1 and engineering ship b2.

[0042] like Figure 2-4 As shown, optionally, in step S3, the stern of engineering vessel a1 is connected to pontoon a201 via towing rope a4, and the stern of engineering vessel b2 is connected to pontoon b202 via towing rope b5. When tugboat 3 interferes with towing rope a4 or b5, tugboat 3 detaches from floating wind turbine 200. In this embodiment, towing ropes a4 and b5 are used to pull floating wind turbine 200 toward a fixed position. During this process, the tugboat 3, which remains attached, corrects the position of floating wind turbine 200, preventing it from colliding with engineering vessel a1 or b2 due to waves.

[0043] like Figure 5-10 As shown, optionally, step S4 includes:

[0044] S41: The bow end of engineering vessel a1 is connected to pontoon a201 via towing rope c6, and the bow end of engineering vessel b2 is connected to pontoon c203 via towing rope d7. Towing ropes a4, b5, c6, and d7 are then used to tow the floating wind turbine 200 to its fixed position. In this embodiment, the coordinated towing of towing ropes a4 and c6, and the towing of towing ropes b5 and d7, respectively, to tug pontoons b202 and c203, respectively, enable the floating wind turbine 200 to reach its fixed position. At this point, all tugboats 3 are detached from the floating wind turbine 200.

[0045] Optionally, step S4 further includes:

[0046] The bow end of the engineering ship a1 is connected to the pontoon a201 through a towing rope e8, and the tail end of the engineering ship a1 is connected to the pontoon a201 through a towing rope f9; the bow end of the engineering ship b2 is connected to the pontoon b202 through a towing rope g10, and the tail end of the engineering ship b2 is connected to the pontoon c203 through a towing rope h11. By adjusting the towing rope a4, towing rope b5, towing rope c6, towing rope d7, towing rope e8, towing rope f9, towing rope g10 and towing rope h11, the position of the floating wind turbine 200 is adjusted so that the pontoon a201, pontoon b202 and pontoon c203 are respectively opposite to the corresponding three sets of mooring cables 100. In this invention, by adding traction rope e8, traction rope f9, traction rope g10 and traction rope h11, the position adjustment ability of the docking pontoon a201, pontoon b202 and pontoon c203 can be improved, so that the pontoon a201, pontoon b202 and pontoon c203 can be stably aligned with the three sets of mooring cables 100, and the three sets of mooring cables 100 can be easily fixed to the pontoon a201, pontoon b202 and pontoon c203 of the floating wind turbine 200 respectively.

[0047] Optionally, in step S1, all four corners of engineering vessel a1 are anchored, and all four corners of engineering vessel b2 are anchored. In this embodiment, to prevent engineering vessel a1 from moving or rotating in place due to waves, anchors are dropped at each of the four corners of engineering vessel a1, thereby firmly securing engineering vessel a to one side of the fixed position. To prevent engineering vessel b2 from moving or rotating in place due to waves, anchors are dropped at each of the four corners of engineering vessel b2, thereby firmly securing engineering vessel b to one side of the fixed position.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A method for placing a floating wind turbine, characterized in that: The floating wind turbine (200) includes three pontoons, two adjacent pontoons are at an angle of 120 degrees, the mooring cables (100) are divided into three groups, two adjacent groups of mooring cables (100) are at an angle of 120 degrees, one end of the three groups of mooring cables (100) are fixed on the seabed, and the other ends of the three groups of mooring cables (100) are all pointed to the fixed position of the floating wind turbine (200). When the floating wind turbine (200) is located at the fixed position, the three groups of mooring cables (100) are fixedly connected to the three pontoons in a one-to-one correspondence. The three pontoons are respectively pontoon a (201), pontoon b (202) and pontoon c (203). The positioning method of the floating wind turbine includes: S1: Engineering vessel a (1) and engineering vessel b (2) arrive at both sides of the fixed position and drop anchor in place; S2: the tugboat (3) drags the floating wind turbine (200) to a position S meters away from the fixed position; S3: the tail end of the engineering vessel a (1) tows the pontoon a (201), and the tail end of the engineering vessel b (2) tows the pontoon b (202), so that the floating wind turbine (200) is towed to a position s meters away from the fixed position, S>s; S4: The fore and aft ends of the engineering vessel a (1) both pull the pontoon a (201), and the fore and aft ends of the engineering vessel b (2) pull the pontoon b (202) and the pontoon c (203), thereby moving the floating wind turbine (200) to the fixed position, and making the pontoon a (201), the pontoon b (202) and the pontoon c (203) respectively face the corresponding three groups of mooring cables (100); In step S2, three tugboats (3) are provided, and the three tugboats (3) respectively tow the pontoon a (201), the pontoon b (202) and the pontoon c (203); In step S3, the tail end of the engineering vessel a (1) is connected to the buoyancy box a (201) via the towing rope a (4), and the tail end of the engineering vessel b (2) is connected to the buoyancy box b (202) via the towing rope b (5). When the tugboat (3) interferes with the towing rope a (4) or the towing rope b (5), the tugboat (3) is separated from the floating wind turbine (200); Step S4 includes: S41: The head end of the engineering vessel a (1) is connected to the buoyancy box a (201) via a traction rope c (6), and the head end of the engineering vessel b (2) is connected to the buoyancy box c (203) via a traction rope d (7), and the traction rope a (4), the traction rope b (5), the traction rope c (6) and the traction rope d (7) tow the floating wind turbine (200) to the fixed position; Before executing step S41, executing step S40: all tugboats (3) are separated from the floating wind turbine (200); Step S4 further includes: The front end of the engineering ship a (1) is connected to the pontoon a (201) via a traction rope e (8), and the rear end of the engineering ship a (1) is connected to the pontoon a (201) via a traction rope f (9); the front end of the engineering ship b (2) is connected to the pontoon b (202) via a traction rope g (10), and the rear end of the engineering ship b (2) is connected to the pontoon c (203) via a traction rope h (11). By adjusting the traction rope a (4), the traction rope b (5), the traction rope c (6), the traction rope d (7), the traction rope e (8), the traction rope f (9), the traction rope g (10) and the traction rope h (11), the position of the floating wind turbine (200) is adjusted so that the pontoon a (201), the pontoon b (202) and the pontoon c (203) are respectively opposite to the corresponding three groups of mooring cables (100).

2. The method for placing a floating wind turbine according to claim 1, characterized in that: In step S2, the bows of the three tugboats (3) are directed in different directions.

3. The method for placing a floating wind turbine according to claim 1, characterized in that: In step S1, the four corners of the engineering vessel a (1) are fixed by dropping anchors, and the four corners of the engineering vessel b (2) are fixed by dropping anchors.

4. The method for placing a floating wind turbine according to claim 1, characterized in that: In step S2, the value of S is 200.

5. The method for placing a floating wind turbine according to claim 1, characterized in that: In step S3, the value of s is 100.

Images