Floating fan mounting method

Abstract

The invention belongs to the technical field of offshore wind turbine installation, and discloses a floating type wind turbine installation method which is characterized in that a floating foundation is arranged between a wharf and a self-elevating platform and is fixed on the wharf through a plurality of cables. And the transport ship carrying the fan equipment travels to the position near the self-elevating platform, and the fan equipment is lighted to the self-elevating platform by the crane on the self-elevating platform. The fan equipment comprises a tower drum, a cabin and blades, and the tower drum, the cabin and the blades are sequentially hoisted by the crane so as to complete the assembly of the floating fan. And the assembled floating fan is integrally towed to a fan location point. Due to the fact that the wharf only plays a role in fixing the floating foundation, the requirement for the loading capacity of the wharf is greatly lowered, the problem that wharf resources meeting the requirement are scarce is solved, installation is convenient, and the high installation efficiency is achieved.

Description

Technical Field

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

[0002] After more than 30 years of development, offshore wind turbines have gradually reached saturation in the development of near-shallow sea resources, and the development of offshore wind power is bound to move towards the deep sea. Floating wind turbines are an important part of deep sea wind power. At present, the floating units installed at home and abroad are hoisted to the floating foundation by crawler cranes at the dock, and then the units and the floating foundation are wet-towed to the offshore machine site as a whole. Since the installed units are all 5-8MW models, the crawler crane models are relatively small, and the bearing capacity performance requirements for the dock are also relatively low.

[0003] As floating units are gradually developed towards deep sea areas, the installed unit capacity is also gradually increasing to more than 16MW. If it is still based on the existing installation process, a crawler crane of more than 4000t is required to meet the unit lifting requirements, but the crawler crane resources are extremely scarce. In addition, the bearing capacity requirements for the dock are relatively high, and the dock resources that can meet the requirements are scarce. For future small-scale floating unit projects, long-term occupation of the dock and high dock rental fees will bring great construction costs to the construction of floating wind turbines. Due to the high requirements for the carrying capacity of the dock and the small number of optional sites, if the wind turbine installation dock that meets the requirements is far away from the wind farm, even after the floating unit is installed at the dock, it is still necessary to tow the floating foundation and wind turbine from the dock to the offshore machine site over a long distance. If strong convection or typhoon weather is encountered during the towing process, the transportation risk is very high. Summary of the invention

[0004] The purpose of the present invention is to provide a floating wind turbine installation method, which greatly reduces the requirements on the bearing capacity of the dock. Therefore, a dock close to the wind farm can be selected, which greatly shortens the integrated towing distance. This will greatly reduce the risk of irreversible damage to the wind turbine equipment caused by severe sea conditions that may be encountered during the integrated towing after the wind turbine is installed at the dock. It is a feasible solution for deep-water floating wind turbine installation and has a relatively broad application prospect.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A floating wind turbine installation method is provided, comprising the following steps:

[0007] S1: The floating foundation is moored on the dock, and the floating foundation is fixed to the dock using cables;

[0008] S2: self-elevating platform standing pile ballasting, arranged at intervals on the side of the floating foundation away from the wharf;

[0009] S3: The transport ship carrying the wind turbine equipment travels to the vicinity of the jack-up platform, and the crane on the jack-up platform transfers the wind turbine equipment to the jack-up platform;

[0010] S4: The wind turbine equipment includes a tower, a nacelle and blades, and the crane sequentially hoists the tower, the wind turbine and the blades to complete the installation of the floating wind turbine;

[0011] S5: The assembled floating wind turbine is towed as a whole to the machine site.

[0012] As an optional solution for the floating wind turbine installation method, the floating foundation includes three floating piles, and the three floating piles are connected by a connecting frame and are arranged to form a triangular structure.

[0013] As an optional solution for the floating wind turbine installation method, a plurality of cables are connected between each of the floating piles and the dock.

[0014] As an optional solution for the floating wind turbine installation method, a wind turbine column is arranged on one of the floating piles, and the wind turbine column is arranged on a side of the floating foundation away from the dock.

[0015] As an optional solution for the floating wind turbine installation method, the self-elevating platform is provided with a plurality of pile legs, and the plurality of pile legs are fixed in the sea.

[0016] As an optional solution for the floating wind turbine installation method, the distance between the insertion position of each pile leg and the pier is greater than the safety distance required by the pier.

[0017] As an optional solution for the floating wind turbine installation method, the tail of the jack-up platform is perpendicular to the pier.

[0018] As an optional solution for the floating wind turbine installation method, the wharf is a wharf near the machine site.

[0019] As an optional solution for the floating wind turbine installation method, a plurality of abutment members are provided between the floating foundation and the pier, and the plurality of abutment members are distributed at intervals along the outer edge line of the pier.

[0020] As an optional solution to the floating wind turbine installation method, the transport vessel is moored on the pier.

[0021] Beneficial effects of the present invention:

[0022] The present invention provides a floating wind turbine installation method, in which a floating foundation is set between a dock and a self-elevating platform, and is fixed to the dock by a plurality of cables. A transport ship carrying wind turbine equipment travels to the vicinity of the self-elevating platform, and a crane on the self-elevating platform transfers the wind turbine equipment to the self-elevating platform. The wind turbine equipment includes a tower, a nacelle and blades, and the crane sequentially hoists the tower, the nacelle and the blades to complete the assembly of the floating wind turbine. The assembled floating wind turbine is then towed as a whole to the machine site. Since the dock only serves as a fixed floating foundation, the load capacity requirements for the dock are greatly reduced, which solves the problem of scarce dock resources that meet the requirements, and is easy to install with high installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a construction process flow chart of the present invention;

[0024] Figure 2 It is a top view of step S1 and step S2 of the floating wind turbine installation process provided by the specific implementation example of the present invention;

[0025] Figure 3 It is a side view of step S1 and step S2 of the floating wind turbine installation process provided by a specific embodiment of the present invention;

[0026] Figure 4 is a top view of step S3 of the floating wind turbine installation process provided in an embodiment of a specific implementation manner of the present invention;

[0027] Figure 5 It is a side view of the tower hoisting process of the floating wind turbine installation process provided by the specific implementation example of the present invention;

[0028] Figure 6 is a top view of step S3 of the floating wind turbine installation process provided in an embodiment of a specific implementation manner of the present invention;

[0029] Figure 7 It is a side view of the nacelle being hoisted during the installation of a floating wind turbine provided in a specific embodiment of the present invention;

[0030] Figure 8 is a top view of step S3 of the floating wind turbine installation process provided in an embodiment of a specific implementation manner of the present invention;

[0031] Fig. 9 It is a side view of the blades being hoisted during the installation of a floating wind turbine provided in a specific implementation example of the present invention.

[0032] In the figure:

[0033] 100. Pier;

[0034] 1. Floating foundation; 11. Floating pile; 12. Connecting frame; 13. Fan column;

[0035] 2. Cable;

[0036] 3. Self-elevating platform; 31. Crane; 32. Pile legs;

[0037] 4. Wind turbine equipment; 41. Tower; 42. Nacelle; 43. Blades;

[0038] 5. Transport ships;

[0039] 6. Abutment parts. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] like Figures 1 to 9 As shown, the present invention provides a floating wind turbine installation method, the method comprising the following steps:

[0046] S1: The floating foundation 1 is moored on the pier 100, and the floating foundation 1 is fixed on the pier 100 using cables 2.

[0047] The above steps are specifically for this embodiment. According to the location of the offshore terminal site, a pier 100 that is closer to the terminal site is selected. The floating foundation 1 is moored on the pier 100, and the floating foundation 1 is fixed to the pier 100 using cables 2 to prevent the floating foundation 1 from moving, thereby ensuring the stability of the subsequent floating wind turbine installation process. The pier 100 only serves to fix the floating foundation 1, and the requirements for the load capacity of the pier 100 are reduced, solving the problem of scarce resources of the pier 100 that meets the requirements.

[0048] Optionally, a plurality of abutment members 6 are provided between the floating foundation 1 and the pier 100, and the plurality of abutment members 6 are spaced apart along the outer edge line of the pier 100. The above arrangement can ensure the stability of the floating foundation 1 fixed to one side of the pier 100, and at the same time, can prevent the floating foundation 1 from being scratched against the pier 100.

[0049] Specifically, the abutment member 6 is in the shape of a rod, and connects the dock 100 and the floating foundation 1 .

[0050] Optionally, the floating foundation 1 includes three floating piles 11, which are connected by a connecting frame 12 and arranged to form a triangular structure to ensure the overall stability of the floating wind turbine.

[0051] Specifically, the three floating piles 11 are all cylindrical piles, and the connecting frame 12 is in the shape of a rod.

[0052] Furthermore, a plurality of cables 2 are connected between each floating pile 11 and the pier 100 to further improve the stability of the floating foundation 1 .

[0053] Specifically, the cable 2 is a steel wire rope commonly used in the art, and has good connection strength and rigidity.

[0054] Optionally, a wind turbine column 13 is provided on one of the floating piles 11, and the wind turbine column 13 is provided on the side of the floating foundation 1 away from the dock 100. That is, the floating pile 11 provided with the wind turbine column 13 faces the outside of the dock 100, so as to facilitate the subsequent hoisting of the floating wind turbine.

[0055] S2: The self-elevating platform 3 is piled and ballasted, and is arranged at intervals on the side of the floating foundation 1 away from the pier 100.

[0056] In the above steps, specifically in this embodiment, the self-elevating platform 3 is piled and ballasted to the side of the floating foundation 1 away from the dock 100. That is, the floating foundation 1 is arranged between the dock 100 and the self-elevating platform 3. While fixing the floating foundation 1 to one side of the dock 100, it is also convenient for the self-elevating platform 3 to hoist the floating wind turbine.

[0057] Optionally, the jack-up platform 3 is provided with a plurality of pile legs 32, which are fixed in the sea to ensure the stability of the jack-up platform 3 fixed in the sea and avoid floating due to the influence of waves. In addition, the length of the pile legs 32 is adjustable to be suitable for sea levels of different heights.

[0058] Specifically, in this embodiment, four pile legs 32 are provided, and the four pile legs 32 are diagonally arranged on the main platform.

[0059] Furthermore, the distance between the pile insertion position of each pile leg 32 and the wharf 100 is greater than the safety distance required by the wharf 100 to ensure safety during construction. Specifically, the safety distance required by each wharf 100 is different, so the pile insertion position of the pile leg 32 is adjusted as needed.

[0060] S3: The transport ship 5 carrying the wind turbine equipment 4 travels to the vicinity of the jack-up platform 3 , and the crane 31 on the jack-up platform 3 transfers the wind turbine equipment 4 to the jack-up platform 3 .

[0061] In the above steps, specifically in this embodiment, the transport ship 5 carrying the wind turbine equipment 4 travels to the vicinity of the self-elevating platform 3, and the crane 31 on the self-elevating platform 3 transfers the wind turbine equipment 4 to the self-elevating platform 3 for subsequent lifting and assembly.

[0062] Optionally, the tail of the self-elevating platform 3 is perpendicular to the pier 100 to facilitate the accuracy of the crane 31 in lifting the wind turbine equipment 4 and ensure the installation efficiency.

[0063] Optionally, after the transport ship 5 travels to the vicinity of the self-elevating platform 3, it is moored to the dock 100 using a cable 2 or a mooring chain to ensure the stability of the transport ship 5, avoid shaking of the transport ship 5 during the transfer of the wind turbine equipment 4, and ensure the safety of the construction.

[0064] Specifically, in this embodiment, two cables 2 are connected between the transport ship 5 and the dock 100; in other embodiments, the number of cables 2 can be set as needed and is not specifically limited here.

[0065] S4: The wind turbine equipment 4 includes a tower 41, a nacelle 42 and blades 43. The crane 31 sequentially hoists the tower 41, the wind turbine and the blades 43 to complete the assembly of the floating wind turbine.

[0066] In the above steps, specifically in this embodiment, the crane 31 hoists the tower 41 onto the wind turbine column 13 to complete the assembly of the tower 41; then hoists the nacelle 42 to assemble the wind turbine to the top of the tower 41; finally hoists the blades 43 and installs them on the nacelle 42 to complete the installation of the floating wind turbine.

[0067] Specifically, the crane 31 is an existing structure disclosed in the prior art. Its specific structure and principle refer to the prior art and will not be described in detail here.

[0068] S5: Tow the assembled floating wind turbine to the machine site.

[0069] In the above steps, specifically in this embodiment, the assembled floating wind turbine is towed to the engine site by a ship. Since the wharf 100 is close to the engine site, the distance of the integrated towing is greatly shortened, thereby reducing the operational risk during the towing process.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A floating wind turbine installation method, characterized in that: The steps include: S1: The floating foundation (1) is moored on the dock (100), and the floating foundation (1) is fixed to the dock (100) using a cable (2); S2: A self-elevating platform (3) is piled and ballasted, and is arranged at intervals on a side of the floating foundation (1) away from the dock (100); S3: The transport ship (5) carrying the wind turbine equipment (4) travels to the vicinity of the self-elevating platform (3), and the crane (31) on the self-elevating platform (3) transfers the wind turbine equipment (4) to the self-elevating platform (3); S4: the wind turbine equipment (4) comprises a tower (41), a nacelle (42) and blades (43), and the crane (31) sequentially hoists the tower (41), the wind turbine (42) and the blades (43), thereby completing the installation of the floating wind turbine; S5: The assembled floating wind turbine is towed as a whole to the machine site.

2. The method for installing a floating wind turbine according to claim 1, characterized in that: The floating foundation (1) comprises three floating piles (11), and the three floating piles (11) are connected by a connecting frame (12) and are arranged to form a triangular structure.

3. The floating wind turbine installation method according to claim 2, characterized in that: A plurality of cables (2) are connected between each of the floating piles (11) and the dock (100).

4. The method for installing a floating wind turbine according to claim 2, characterized in that: A wind turbine column (13) is arranged on one of the floating piles (11), and the wind turbine column (13) is arranged on a side of the floating foundation (1) away from the dock (100).

5. The method for installing a floating wind turbine according to claim 1, characterized in that: The self-elevating platform (3) is provided with a plurality of pile legs (32), and the plurality of pile legs (32) are fixed in the sea.

6. The method for installing a floating wind turbine according to claim 5, characterized in that: The distance between the insertion position of each pile leg (32) and the wharf (100) is greater than the safety distance required by the wharf (100).

7. The method for installing a floating wind turbine according to any one of claims 1 to 6, characterized in that: The tail of the self-elevating platform (3) is perpendicular to the pier (100).

8. The method for installing a floating wind turbine according to any one of claims 1 to 6, characterized in that: The wharf (100) is a wharf near the aircraft station.

9. The method for installing a floating wind turbine according to any one of claims 1 to 6, characterized in that: A plurality of abutment members (6) are arranged between the floating foundation (1) and the dock (100), and the plurality of abutment members (6) are distributed at intervals along the outer edge line of the dock (100).

10. The method for installing a floating wind turbine according to any one of claims 1 to 6, characterized in that: The transport ship (5) is moored on the dock (100).

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