Construction method of floating type offshore wind power offshore temporary wharf double-unit integral construction structure

Abstract

The invention discloses a construction method of a floating type offshore wind power offshore temporary wharf double-unit integral construction structure, which comprises the step of respectively installing hubs at diagonal positions of a platform deck so as to present the floating type offshore wind power offshore temporary wharf double-unit integral construction structure. The two hubs of the fan are fixedly connected with the flange plates at the opposite angles of the platform deck in a butt joint mode respectively, three blades are hoisted on each hub, one hub provided with the three blades is hoisted to a tower barrel of the floating body foundation, the other hub is in butt joint with the blades transported by a transport ship in a hoisting mode, the installation efficiency of the fan is improved, and the service life of the fan is prolonged. The construction environment that the floating body foundation provides three mounting points is met, and the problem that the fan mounting efficiency is low due to the fact that the three blades are sequentially hoisted to the hub is solved.

Description

Technical Field

[0001] The invention relates to a construction method for a floating offshore wind power offshore temporary wharf dual-unit integrated construction structure, belonging to the technical field of offshore wind power construction. Background Art

[0002] When offshore wind power adopts floating foundation, the triangularly distributed floating foundation can provide three installation points. The existing technology (see Chinese patent announcement number CN103145051B) first installs the tower and the hub, and then hoists the three blades onto the hub in sequence, which has the problem of low wind turbine installation efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a construction method for a floating offshore wind power offshore temporary wharf dual-unit integrated construction structure.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a construction method for a floating offshore wind power offshore temporary wharf dual-unit integrated construction structure, comprising: installing hubs at diagonal positions of a platform deck to present a floating offshore wind power offshore temporary wharf dual-unit integrated construction structure.

[0006] The floating offshore wind power temporary offshore dock dual-unit integrated construction structure includes:

[0007] platform deck;

[0008] Insert the platform legs fixed on the seabed, and the platform deck can be lifted and installed on the platform legs;

[0009] The platform deck is fixed with outwardly cantilevered platform panels at the diagonal positions, and the two platform panels are distributed diagonally at the diagonal positions of the platform deck.

[0010] A steel support is fixedly connected to the platform panel; a flange plate for docking and fixing with the hub flange is fixed to the steel support.

[0011] The platform deck at the hub is equipped with a crane for lifting operations.

[0012] A storage tower and a storage cabin are arranged in the middle of the platform deck below the crane.

[0013] Mooring piles are distributed on the sides of the platform deck, a floating foundation is moored on the mooring piles, and a tower of a wind turbine is installed on the floating foundation.

[0014] Transport ships for transporting blades are distributed on the sides of the platform deck.

[0015] The beneficial effects of the present invention are as follows: the two hubs of the wind turbine are respectively docked and fixed with flanges at the diagonals of the platform deck, three blades are hoisted on each hub, one hub with three blades installed is hoisted onto the tower of the floating foundation, and the other hub is hoisted and docked with the blades transported by the transport ship, thereby improving the installation efficiency of the wind turbine, satisfying the construction environment in which the floating foundation provides three installation points, and solving the problem of low installation efficiency of the wind turbine caused by hoisting the three blades onto the hub in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the wheel hub of the present invention on the flange;

[0017] Figure 2 is a side view schematic diagram of the wheel hub of the present invention on the flange;

[0018] Figure 3 is a top view schematic diagram of the three blades of the present invention when they are distributed;

[0019] Figure 4 is a schematic front view of the hub of the present invention on the platform deck;

[0020] Figure 5 is a schematic top view of the hub of the present invention on the platform deck;

[0021] In the figure: 11-triangular support; 12-platform panel; 21-reinforcement rib; 22-steel support; 23-flange; 31-blade; 32-hub; 41-platform deck; 42-platform leg; 5-floating foundation; 6-mooring pile; 7-transport ship; 81-storage tower; 82-storage engine room; 9-crane. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0023] like Figures 1 to 4 shown.

[0024] The present application discloses a floating offshore wind power temporary dock dual-unit integrated construction structure, comprising:

[0025] The platform deck 41 provides a working space environment. The platform legs 42 are fixed at the bottom of the platform deck 41. The platform legs 42 are inserted into the seabed and fixed. The platform deck 41 can be raised and lowered on the platform legs 42. The platform deck 41 and the platform legs 42 can be constructed using existing self-elevating oil well platforms.

[0026] The platform deck 41 is fixed with outwardly cantilevered platform panels 12 at the lower left and upper right diagonal positions, so that the two platform panels 12 are obliquely distributed at the diagonal positions of the platform deck 41, and the bottom of the platform panel 12 is reinforced and fixedly connected to the platform deck 41 through the triangular support 11. The platform panel 12 is fixedly connected with a steel support 22, and the steel support 22 is reinforced and fixedly connected to the platform panel 12 through the reinforcing ribs 21; the steel support 22 is fixed with a flange 23 for docking and fixing with the flange opening of the hub 32.

[0027] The two hubs 32 of the wind turbine are respectively docked and fixed with the flanges 23 at the diagonal positions of the platform deck 41. Three blades 31 are hoisted on each hub 32. The three blades 31 are cantilevered outwardly on the platform panel 12 at an angle of 270°. The three blades of each hub 32 do not extend into the internal space of the platform deck 41. Then, the hubs 32 with three blades 31 installed are hoisted together to the tower of the floating foundation 5. One hub 32 with three blades 31 installed is hoisted to the tower of the floating foundation 5, and the other hub 32 is hoisted and docked with the blades 31 transported by the transport ship 7, which improves the installation efficiency of the wind turbine and satisfies the construction environment of the floating foundation 5 providing three installation points. The problem of low installation efficiency of the wind turbine caused by hoisting the three blades onto the hub in sequence is solved.

[0028] The platform deck 41 at the hub 32 is installed with a crane 9 for lifting operations. A storage tower 81 and a storage cabin 82 are arranged in the middle of the platform deck 41 below the crane 9. The stored blades 31 can also be placed in the middle of the platform deck 41 below the crane 9.

[0029] Mooring piles 6 are distributed on the side of the platform deck 41 , a floating foundation 5 is moored on the mooring piles 6 , and a tower of a wind turbine is installed on the floating foundation 5 .

[0030] Transport ships 7 for transporting blades 31 are distributed on the side of the platform deck 41 .

[0031] The present application provides a construction method for a floating offshore wind power offshore temporary terminal dual-unit integrated construction structure, comprising: installing hubs 32 at diagonally opposite corners of a platform deck 41 to present a floating offshore wind power offshore temporary terminal dual-unit integrated construction structure.

[0032] The platform legs 42 are inserted into the seabed and fixed, the platform deck 41 is lifted and lowered to the corresponding height on the platform legs 42, mooring piles 6 are distributed on the side of the platform deck 41, the mooring piles 6 are fixed on the seabed, the floating foundation 5 is moored on the mooring piles 6, the transport ship 7 transports the blades 31, the hub 32 and the tower, etc. on the side of the platform deck 41, and the tower is hoisted and docked with the floating foundation 5; the two hubs 32 are respectively docked and fixed with the flanges 23 at the diagonal positions of the platform deck 41, and three blades 31 are hoisted on each hub 32, and the hub 32 with three blades 31 installed is hoisted together to the tower of the floating foundation 5, one hub 32 with three blades 31 installed is hoisted to the tower of the floating foundation 5, and the other hub 32 is hoisted and docked with the blades 31 transported by the transport ship 7.

Claims

1. A construction method for a floating offshore wind power temporary offshore dock dual-unit integrated construction structure, characterized in that: include: Hubs (32) are respectively installed at diagonally opposite corners of the platform deck (41) to present a floating offshore wind power offshore temporary dock dual-unit integrated construction structure.

2. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 1, characterized in that: The floating offshore wind power temporary offshore dock dual-unit integrated construction structure includes: Platform deck (41); Insert the platform legs (42) fixed on the seabed, and the platform deck (41) can be lifted and installed on the platform legs (42); The platform deck (41) is fixed with outwardly cantilevered platform panels (12) at the diagonal positions thereof, and the two platform panels (12) are distributed diagonally at the diagonal positions of the platform deck (41).

3. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 2, characterized in that: A steel support (22) is fixedly connected to the platform panel (12); a flange plate (23) is fixed to the steel support (22) for docking and fixing with the flange opening of the wheel hub (32).

4. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 2, characterized in that: The platform deck (41) at the hub (32) is equipped with a crane (9) for lifting operations.

5. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 2, characterized in that: A storage tower (81) and a storage cabin (82) are provided in the middle of the platform deck (41) below the crane (9).

6. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 5, characterized in that: Mooring piles (6) are distributed on the side of the platform deck (41), a floating foundation (5) is moored on the mooring piles (6), and a tower of a wind turbine is installed on the floating foundation (5).

7. The construction method of the floating offshore wind power temporary offshore dock dual-unit integrated construction structure according to claim 5, characterized in that: Transport ships (7) for transporting blades (31) are distributed on the sides of the platform deck (41).

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