Construction method of negative pressure suction type bearing platform for offshore renovation of floating type offshore wind turbine

Abstract

The invention discloses a construction method of a negative pressure suction type bearing platform for offshore renovation of a floating type offshore wind turbine. The construction method comprises the construction process that three mooring ropes are distributed in a triangular shape to form constraining force on the periphery of a base. The three adjusting mechanisms in the base are connected with the fixing columns inserted into a seabed for fixing through the corresponding mooring ropes, the three mooring ropes are distributed in a triangular mode to bear force on the base, the base is not prone to being driven by sea waves to displace, secondary salvage is avoided when the base needs to be in butt joint with a floating body foundation, and the problems that a mooring chain is prone to being driven by the sea waves to displace, and the service life of the mooring chain is prolonged are solved. Therefore, the problem that a mooring chain needs to be salvaged for the second time to be moored with a floating body foundation during later-stage mooring is solved.

Description

Technical Field

[0001] The invention relates to a negative pressure suction type bearing platform construction method for offshore integrated floating offshore wind turbines, belonging to the technical field of offshore wind power construction. Background Art

[0002] After the floating foundation of the floating offshore wind turbine is towed to the installation point, it needs to be moored to maintain a certain stability.

[0003] The existing mooring of the floating foundation, see Chinese patent publication number CN216401698U, uses a mooring chain to connect with the floating foundation. Although the mooring of the floating foundation can be achieved, when the mooring chain is arranged in advance, there are two mooring chains on the mooring side of the floating foundation. The mooring chain is easily displaced by the waves, resulting in the problem that the mooring chain needs to be salvaged for the second time to be moored with the floating foundation in the later mooring. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a negative pressure suction type foundation construction method for offshore assembly of floating offshore wind turbines.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a negative pressure suction type foundation construction method for offshore integrated floating offshore wind turbines, comprising: a construction process in which three cables are distributed in a triangular shape to form a constraint force on the periphery of the base.

[0007] The construction process is specifically as follows: the floating block is connected to the second conduit and the third conduit and abutted against the base through the abutment block, the cable is connected to the guide member, the fixed column is firmly fixed to the seabed, the cable is connected to the fixed column, the valve on the second conduit of the conduit is connected to the valve on the two-way water pump, the valve on the third conduit is connected to the pressure relief valve, the fourth conduit is started, the water flow is introduced into the interior of the floating block, the buoyancy of the base is changed, and the guide groove is partially located below the sea surface, and the top surface of the base is located above the sea surface;

[0008] The rotating disk drives the worm to rotate, which in turn drives the worm wheel to rotate, which drives the threaded rod to rotate. Under the limit of the base, the guide moves up and down, which in turn drives the cable to move and straighten. The three cables distributed in a triangle form a restraining force on the periphery of the base, so that the base is horizontal.

[0009] The vacuum suction cup contacts the bottom surface of the floating foundation, and a pipe is used to connect the valve on the first conduit with the valve on the two-way water pump. The fourth conduit is started to drain water, and negative pressure is generated in the vacuum suction cup to firmly adsorb the floating foundation on the base.

[0010] It also includes at least three adjusting mechanisms and cables. The adjusting mechanisms are distributed in a circular array inside the base. Each of the three adjusting mechanisms is connected to a corresponding cable. The top of the cable is fixedly connected to a fixed column inserted into the seabed and fixed. The three cables are distributed in a triangle shape on the periphery of the base to form a restraining force.

[0011] The bottom surface of the base is a recessed space, and a floating block is placed therein.

[0012] A vacuum suction cup is installed on the top of the base; and a guide groove for guiding and docking with the floating body foundation is provided on the top of the base located at the periphery of the vacuum suction cup.

[0013] A first conduit is arranged inside the vacuum suction cup, one end of the first conduit is inside the vacuum suction cup, and one end of the first conduit is outside the vacuum suction cup and is connected to a valve installed thereon.

[0014] The device also comprises a second conduit and a third conduit which are connected with the hollow inside of the floating block, and the second conduit and the third conduit are both connected with valves.

[0015] The floating block is connected with a fourth conduit, and the fourth conduit is connected with a bidirectional water pump.

[0016] The adjustment mechanism includes a guide member fixedly connected to the cable, and the inner surface of the base is provided with a slide groove cooperating with the guide member, so that the guide member can only slide in the slide groove on the inner surface of the base;

[0017] A threaded rod screwed together with a guide member through a thread pair, and the threaded rod can only be rotatably installed up and down through a limit block and a base;

[0018] A worm wheel is fixed on the threaded rod, a worm is meshed with the worm wheel, and a rotating disk is arranged at the end of the worm that passes through the base.

[0019] The beneficial effects of the present invention are as follows: the three adjustment mechanisms in the base are connected to the fixed columns inserted into the seabed and fixed through corresponding cables. The three cables are distributed in a triangle to apply force to the base, so that the base is not easily displaced by the waves, avoiding the need for secondary salvage when docking with the floating foundation, and solving the problem that the mooring chain is easily displaced by the waves, resulting in the need for secondary salvage of the mooring chain to be moored with the floating foundation in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the negative pressure suction type support structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the abutment block of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the present invention.

[0024] In the figure: 1-base; 2-adjusting mechanism; 201-threaded rod; 202-limiting block; 203-worm gear; 204-worm; 205-rotating disk; 206-guide; 3-floating plate; 4-cable; 5-fixed column; 7-guide groove; 8-vacuum suction cup; 9-first conduit; 10-floating block; 11-second conduit; 12-third conduit; 13-bidirectional water pump; 14-fourth conduit; 15-valve; 16-abutment. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0026] like Figures 1 to 4 shown.

[0027] The present application discloses a negative pressure suction type support for offshore integrated floating offshore wind turbines, comprising:

[0028] The bottom surface of the base 1 is a recessed space for placing the floating block 10. The inside of the floating block 10 is hollow. The bottom of the base 1 is detachably connected with an abutment block 16 by bolts. The abutment block 16 holds the floating block 10 in the recessed space on the bottom surface of the base 1.

[0029] The base 1 is provided with an adjustment mechanism 2, and at least three adjustment mechanisms 2 are arranged in a circular array on the base 1. Each of the three adjustment mechanisms 2 on the base 1 is connected to a cable 4, and a fixing column 5 inserted into the seabed and fixed is fixed to the top of the cable 4. The three cables 4 are distributed on the periphery of the base 1 in a triangular shape.

[0030] A vacuum suction cup 8 is installed on the top of the base 1; and a guide groove 7 for guiding and docking with the floating body foundation is provided on the top of the base 1 located at the periphery of the vacuum suction cup 8.

[0031] A first conduit 9 is arranged inside the vacuum suction cup 8 , one end of the first conduit 9 is inside the vacuum suction cup 8 , and one end of the first conduit 9 is outside the vacuum suction cup 8 and is connected to a valve 15 .

[0032] The three adjustment mechanisms 2 in the base 1 are connected to the fixed columns 5 inserted into the seabed through the corresponding cables 4. The three cables 4 are distributed in a triangle to exert force on the base 1, so that the base 1 is not easily displaced by the waves, and it is avoided that it needs to be salvaged again when docking with the floating body foundation. This solves the problem that the mooring chain is easily displaced by the waves, resulting in the need to salvage the mooring chain again to moor with the floating body foundation in the later stage. After the floating body foundation contacts the vacuum suction cup 8, the vacuum suction cup 8 is evacuated through the first conduit 9 and the valve 15 to form a negative pressure to absorb and support the bottom of the floating body foundation. At this time, the bottom of the floating body foundation is in surface contact with the vacuum suction cup 8. The vacuum suction cups 8 of the three bases 1 perform surface contact adsorption on the three corners of the floating body foundation.

[0033] The second conduit 11 and the third conduit 12 are connected to the hollow inside of the floating block 10 . The second conduit 11 and the third conduit 12 are both connected to a valve 15 .

[0034] The floating block 10 is connected to a fourth conduit 14 , and the fourth conduit 14 is connected to a bidirectional water pump 13 .

[0035] The outside of the base 1 is fixedly connected with a floating plate 3 by bolts. The floating plates 3 are three in a circular array distributed outside the base 1 .

[0036] The adjusting mechanism 2 includes a guide member 206 fixedly connected to the cable 4, and a slide groove is provided on the inner surface of the base 1 to cooperate with the guide member 206, so that the guide member 206 can only slide in the slide groove on the inner surface of the base 1;

[0037] The threaded rod 201 is screwed with the guide member 206 through the thread pair, and the threaded rod 201 is rotatably mounted on the base 1 through the limit block 202;

[0038] A worm wheel 203 is fixed on the threaded rod 201, and a worm 24 is meshed with the worm wheel 203. A rotating disk 205 is provided at the end of the worm 24 that passes through the base 1. The rotating disk 205 is rotated from the outside to rotate the worm wheel 203, and the guide member 206 is controlled to move with the cable 4 to achieve the tightening adjustment of the base 1.

[0039] The present application discloses a negative pressure suction type foundation construction method for offshore integrated floating offshore wind turbines, comprising:

[0040] The buoy 10 is connected to the second conduit 11 and the third conduit 12, and then the abutment block 16 is fixed firmly by using bolts, and then the buoy 10 is set in the base 1, pulled to the preset location, and then the cable 4 is connected to the guide member 206, and the fixed column 5 is fixed to the seabed at the preset position on the seabed, and then the cable 4 is connected to the fixed column 5, and then the valve 15 on the second conduit 11 is connected to the valve 15 on the two-way water pump 13, and the valve 15 on the third conduit 12 is connected to the pressure relief valve, and then the fourth conduit 14 is started to work, and the water flow is introduced into the interior of the buoy 10, the buoyancy of the base 1 is changed, and the guide groove 7 is partially located below the sea surface, and the top surface of the base 1 is located on the sea surface, and then the rotating disk 205 is rotated to bring The movable worm 204 rotates, thereby rotating the worm 204, and then rotating the worm wheel 203, driving the threaded rod 201 to rotate. Under the limit of the base 1, the guide member 206 moves up and down, and then drives the cable 4 to move and straighten. The three cables 4 distributed in a triangle form a restraining force on the periphery of the base 1, so that the base 1 is horizontal; then the floating body foundation is pulled by the ship to the guide groove 7 to reach the vacuum suction cup 8, and the vacuum suction cup 8 contacts the bottom surface of the floating body foundation, and then the valve 15 on the first conduit 9 is connected to the valve 15 on the two-way water pump 13 through a pipeline, and then the fourth conduit 14 is started to perform drainage operation, so that negative pressure is generated in the vacuum suction cup 8, and the floating body foundation is firmly adsorbed on the base 1 and fixed firmly.

Claims

1. A method for constructing a negative pressure suction foundation for offshore installation of a floating offshore wind turbine, characterized in that: include: The three cables (4) are distributed in a triangular shape to form a restraining force on the outer periphery of the base (1) during the construction process.

2. The method for constructing a negative pressure suction foundation for offshore installation of a floating offshore wind turbine according to claim 1, characterized in that: The construction process is specifically as follows: the floating block (10) is connected to the second conduit (11) and the third conduit (12) and abutted against the inside of the base (1) through the abutment block (16); the cable (4) is connected to the guide member (206); the fixing column (5) is firmly attached to the seabed; the cable (4) is connected to the fixing column (5); the valve (15) on the second conduit (11) is connected to the valve (15) on the two-way water pump (13); the valve (15) on the third conduit (12) is connected to the pressure relief valve; the fourth conduit (14) is started to work, water is introduced into the inside of the floating block (10), the buoyancy of the base (1) is changed, and a part of the guide groove (7) is located below the sea surface, and the top surface of the base (1) is located above the sea surface; The rotating disk (205) drives the worm (204) to rotate, thereby causing the worm (204) to rotate, and then causing the worm wheel (203) to rotate, driving the threaded rod (201) to rotate. Under the limit of the base (1), the guide member (206) moves up and down, and then drives the cable (4) to move and straighten. The three cables (4) distributed in a triangle form a restraining force on the periphery of the base (1), so that the base (1) is horizontal; The vacuum suction cup (8) contacts the bottom surface of the floating body foundation, and a pipe is used to connect the valve (15) on the first conduit (9) and the valve (15) on the two-way water pump (13). The fourth conduit (14) is started to drain water, and negative pressure is generated in the vacuum suction cup (8), so that the floating body foundation is firmly adsorbed on the base (1).

3. The method for constructing a negative pressure suction foundation for offshore installation of a floating offshore wind turbine according to claim 1, characterized in that: It also includes at least three adjusting mechanisms (2) and cables (4), wherein the adjusting mechanisms (2) are distributed in a circular array within the base (1), each of the three adjusting mechanisms (2) is connected to a corresponding cable (4), and the top of the cable (4) is fixedly connected to a fixing column (5) inserted into the seabed and fixed; the three cables (4) are distributed in a triangular shape on the periphery of the base (1) to form a restraining force.

4. The method for constructing a negative pressure suction platform for offshore installation of a floating offshore wind turbine according to claim 3, characterized in that: The bottom surface of the base (1) is a recessed space, and a floating block (10) is placed therein.

5. The method for constructing a negative pressure suction foundation for offshore installation of a floating offshore wind turbine according to claim 3, characterized in that: A vacuum suction cup (8) is installed on the top of the base (1); and a guide groove (7) for guiding and docking with the floating body foundation is provided on the top of the base (1) located on the periphery of the vacuum suction cup (8).

6. The method for constructing a negative pressure suction foundation for offshore installation of a floating offshore wind turbine according to claim 5, characterized in that: A first conduit (9) is arranged inside the vacuum suction cup (8), one end of the first conduit (9) is inside the vacuum suction cup (8), and one end of the first conduit (9) is outside the vacuum suction cup (8) and is connected to a valve (15) installed thereon.

7. The method for constructing a negative pressure suction platform for offshore installation of a floating offshore wind turbine according to claim 4, characterized in that: The invention also comprises a second conduit (11) and a third conduit (12) which are connected to the hollow interior of the floating block (10); the second conduit (11) and the third conduit (12) are both connected to a valve (15); the floating block (10) is connected to a fourth conduit (14), and the fourth conduit (14) is connected to a two-way water pump (13).

8. The method for constructing a negative pressure suction platform for offshore installation of a floating offshore wind turbine according to claim 3, characterized in that: The adjusting mechanism (2) comprises a guide member (206) fixedly connected to the cable (4); the inner surface of the base (1) is provided with a slide groove cooperating with the guide member (206), so that the guide member (206) can only slide in the slide groove on the inner surface of the base (1); A threaded rod (201) screwed together with a guide member (206) through a threaded pair, the threaded rod (201) being mounted vertically and only rotatably on the base (1) through a limit block (202); A worm wheel (203) is fixed on the threaded rod (201), a worm (24) is meshed with the worm wheel (203), and a rotating disk (205) is provided at the end of the worm (24) that passes through the base (1).

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